From 4c36cefc1c51ba462a12c37bb62b4cf58165d200 Mon Sep 17 00:00:00 2001 From: Maira Bello Date: Fri, 14 Oct 2016 12:23:04 -0300 Subject: [PATCH] v2.0.3 --- bower.json | 2 +- build/amd/senna/src/app/App.js | 22 ++++++++++------ build/amd/senna/src/app/App.js.map | 2 +- build/globals/senna-debug.js | 40 ++++++++++++++++++++++++------ build/globals/senna-min.js | 6 ++--- build/globals/senna.js | 40 ++++++++++++++++++++++++------ build/globals/senna.js.map | 2 +- package.json | 2 +- 8 files changed, 86 insertions(+), 30 deletions(-) diff --git a/bower.json b/bower.json index ea8622d..919e1a9 100644 --- a/bower.json +++ b/bower.json @@ -1,6 +1,6 @@ { "name": "senna", - "version": "2.0.2", + "version": "2.0.3", "description": "A blazing-fast Single Page Application engine", "homepage": "http://sennajs.com", "main": [ diff --git a/build/amd/senna/src/app/App.js b/build/amd/senna/src/app/App.js index 5210d87..9d1bab3 100644 --- a/build/amd/senna/src/app/App.js +++ b/build/amd/senna/src/app/App.js @@ -451,7 +451,7 @@ define(['exports', 'metal/src/metal', 'metal-debounce/src/debounce', 'metal-dom/ _this5.activeScreen.deactivate(); } _this5.prepareNavigateHistory_(path, nextScreen, opt_replaceHistory); - _this5.prepareNavigateSurfaces_(nextScreen, _this5.surfaces, route.extractParams(path)); + _this5.prepareNavigateSurfaces_(nextScreen, _this5.surfaces, _this5.extractParams(route, path)); }).then(function () { return nextScreen.evaluateStyles(_this5.surfaces); }).then(function () { @@ -468,6 +468,11 @@ define(['exports', 'metal/src/metal', 'metal-debounce/src/debounce', 'metal-dom/ throw reason; }); } + }, { + key: 'extractParams', + value: function extractParams(route, path) { + return route.extractParams(this.getRoutePath(path)); + } }, { key: 'finalizeNavigate_', value: function finalizeNavigate_(path, nextScreen) { @@ -495,12 +500,7 @@ define(['exports', 'metal/src/metal', 'metal-debounce/src/debounce', 'metal-dom/ return null; } - path = _utils2.default.getUrlPathWithoutHash(path); - - // Makes sure that the path substring will be in the expected format - // (that is, will end with a "/"). - path = _utils2.default.getUrlPathWithoutHash(path.substr(this.basePath.length)); - + path = this.getRoutePath(path); for (var i = 0; i < this.routes.length; i++) { var route = this.routes[i]; if (route.matchesPath(path)) { @@ -540,6 +540,14 @@ define(['exports', 'metal/src/metal', 'metal-debounce/src/debounce', 'metal-dom/ value: function getLoadingCssClass() { return this.loadingCssClass; } + }, { + key: 'getRoutePath', + value: function getRoutePath(path) { + path = _utils2.default.getUrlPathWithoutHash(path); + // Makes sure that the path substring will be in the expected format + // (that is, will end with a "/"), even after removing the base path. + return _utils2.default.getUrlPathWithoutHash(path.substr(this.basePath.length)); + } }, { key: 'getUpdateScrollPosition', value: function getUpdateScrollPosition() { diff --git a/build/amd/senna/src/app/App.js.map b/build/amd/senna/src/app/App.js.map index 3fe83b6..6681534 100644 --- a/build/amd/senna/src/app/App.js.map +++ b/build/amd/senna/src/app/App.js.map @@ -1 +1 @@ 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strict';\n\nimport { array, async, core } from 'metal';\nimport debounce from 'metal-debounce';\nimport dom from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\nimport { EventEmitter, EventHandler } from 'metal-events';\nimport utils from '../utils/utils';\nimport globals from '../globals/globals';\nimport Route from '../route/Route';\nimport Screen from '../screen/Screen';\nimport Surface from '../surface/Surface';\nimport Uri from 'metal-uri';\n\nclass App extends EventEmitter {\n\n\t/**\n\t * App class that handle routes and screens lifecycle.\n\t * @constructor\n\t * @extends {EventEmitter}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the active screen.\n\t\t * @type {?Screen}\n\t\t * @protected\n\t\t */\n\t\tthis.activeScreen = null;\n\n\t\t/**\n\t\t * Holds the active path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.activePath = null;\n\n\t\t/**\n\t\t * Allows prevent navigate from dom prevented event.\n\t\t * @type {boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.allowPreventNavigate = true;\n\n\t\t/**\n\t\t * Holds link base path.\n\t\t * @type {!string}\n\t\t * @default ''\n\t\t * @protected\n\t\t */\n\t\tthis.basePath = '';\n\n\t\t/**\n\t\t * Captures scroll position from scroll event.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.captureScrollPositionFromScrollEvent = true;\n\n\t\t/**\n\t\t * Holds the default page title.\n\t\t * @type {string}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.defaultTitle = globals.document.title;\n\n\t\t/**\n\t\t * Holds the form selector to define forms that are routed.\n\t\t * @type {!string}\n\t\t * @default form[enctype=\"multipart/form-data\"]:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.formSelector = 'form[enctype=\"multipart/form-data\"]:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the link selector to define links that are routed.\n\t\t * @type {!string}\n\t\t * @default a:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.linkSelector = 'a:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the loading css class.\n\t\t * @type {!string}\n\t\t * @default senna-loading\n\t\t * @protected\n\t\t */\n\t\tthis.loadingCssClass = 'senna-loading';\n\n\t\t/**\n\t\t * Using the History API to manage your URLs is awesome and, as it happens,\n\t\t * a crucial feature of good web apps. One of its downsides, however, is\n\t\t * that scroll positions are stored and then, more importantly, restored\n\t\t * whenever you traverse the history. This often means unsightly jumps as\n\t\t * the scroll position changes automatically, and especially so if your app\n\t\t * does transitions, or changes the contents of the page in any way.\n\t\t * Ultimately this leads to an horrible user experience. The good news is,\n\t\t * however, that there’s a potential fix: history.scrollRestoration.\n\t\t * https://developers.google.com/web/updates/2015/09/history-api-scroll-restoration\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.nativeScrollRestorationSupported = ('scrollRestoration' in globals.window.history);\n\n\t\t/**\n\t\t * When set to true there is a pendingNavigate that has not yet been\n\t\t * resolved or rejected.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.isNavigationPending = false;\n\n\t\t/**\n\t\t * Holds a deferred with the current navigation.\n\t\t * @type {?CancellablePromise}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.pendingNavigate = null;\n\n\t\t/**\n\t\t * Holds the window horizontal scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollLeft = 0;\n\n\t\t/**\n\t\t * Holds the window vertical scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollTop = 0;\n\n\t\t/**\n\t\t * Holds the redirect path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.redirectPath = null;\n\n\t\t/**\n\t\t * Holds the screen routes configuration.\n\t\t * @type {?Array}\n\t\t * @default []\n\t\t * @protected\n\t\t */\n\t\tthis.routes = [];\n\n\t\t/**\n\t\t * Maps the screen instances by the url containing the parameters.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.screens = {};\n\n\t\t/**\n\t\t * When set to true the first erroneous popstate fired on page load will be\n\t\t * ignored, only if globals.window.history.state is also\n\t\t * null.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.skipLoadPopstate = false;\n\n\t\t/**\n\t\t * Maps that index the surfaces instances by the surface id.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.surfaces = {};\n\n\t\t/**\n\t\t * When set to true, moves the scroll position after popstate, or to the\n\t\t * top of the viewport for new navigation. If false, the browser will\n\t\t * take care of scroll restoration.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.updateScrollPosition = true;\n\n\t\tthis.appEventHandlers_ = new EventHandler();\n\n\t\tthis.appEventHandlers_.add(\n\t\t\tdom.on(globals.window, 'scroll', debounce(this.onScroll_.bind(this), 100)),\n\t\t\tdom.on(globals.window, 'load', this.onLoad_.bind(this)),\n\t\t\tdom.on(globals.window, 'popstate', this.onPopstate_.bind(this))\n\t\t);\n\n\t\tthis.on('startNavigate', this.onStartNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigateDefault_, true);\n\n\t\tthis.setLinkSelector(this.linkSelector);\n\t\tthis.setFormSelector(this.formSelector);\n\t}\n\n\t/**\n\t * Adds one or more screens to the application.\n\t *\n\t * Example:\n\t *\n\t * \n\t * app.addRoutes({ path: '/foo', handler: FooScreen });\n\t * or\n\t * app.addRoutes([{ path: '/foo', handler: function(route) { return new FooScreen(); } }]);\n\t * \n\t *\n\t * @param {Object} or {Array} routes Single object or an array of object.\n\t * Each object should contain path and screen.\n\t * The path should be a string or a regex that maps the\n\t * navigation route to a screen class definition (not an instance), e.g:\n\t * { path: \"/home:param1\", handler: MyScreen }\n\t * { path: /foo.+/, handler: MyScreen }\n\t * @chainable\n\t */\n\taddRoutes(routes) {\n\t\tif (!Array.isArray(routes)) {\n\t\t\troutes = [routes];\n\t\t}\n\t\troutes.forEach((route) => {\n\t\t\tif (!(route instanceof Route)) {\n\t\t\t\troute = new Route(route.path, route.handler);\n\t\t\t}\n\t\t\tthis.routes.push(route);\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds one or more surfaces to the application.\n\t * @param {Surface|String|Array.} surfaces\n\t * Surface element id or surface instance. You can also pass an Array\n\t * whichcontains surface instances or id. In case of ID, these should be\n\t * the id of surface element.\n\t * @chainable\n\t */\n\taddSurfaces(surfaces) {\n\t\tif (!Array.isArray(surfaces)) {\n\t\t\tsurfaces = [surfaces];\n\t\t}\n\t\tsurfaces.forEach((surface) => {\n\t\t\tif (core.isString(surface)) {\n\t\t\t\tsurface = new Surface(surface);\n\t\t\t}\n\t\t\tthis.surfaces[surface.getId()] = surface;\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns if can navigate to path.\n\t * @param {!string} url\n\t * @return {boolean}\n\t */\n\tcanNavigate(url) {\n\t\tvar path = utils.getUrlPath(url);\n\t\tvar uri = new Uri(url);\n\n\t\tif (!this.isLinkSameOrigin_(uri.getHostname())) {\n\t\t\tconsole.log('Offsite link clicked');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.isSameBasePath_(path)) {\n\t\t\tconsole.log('Link clicked outside app\\'s base path');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.findRoute(path)) {\n\t\t\tconsole.log('No route for ' + path);\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Clear screens cache.\n\t * @chainable\n\t */\n\tclearScreensCache() {\n\t\tObject.keys(this.screens).forEach((path) => {\n\t\t\tif (path === this.activePath) {\n\t\t\t\tthis.activeScreen.clearCache();\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Retrieves or create a screen instance to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {Screen}\n\t */\n\tcreateScreenInstance(path, route) {\n\t\tif (!this.pendingNavigate && path === this.activePath) {\n\t\t\tconsole.log('Already at destination, refresh navigation');\n\t\t\treturn this.activeScreen;\n\t\t}\n\t\t/* jshint newcap: false */\n\t\tvar screen = this.screens[path];\n\t\tif (!screen) {\n\t\t\tvar handler = route.getHandler();\n\t\t\tif (handler === Screen || Screen.isImplementedBy(handler.prototype)) {\n\t\t\t\tscreen = new handler();\n\t\t\t} else {\n\t\t\t\tscreen = handler(route) || new Screen();\n\t\t\t}\n\t\t\tconsole.log('Create screen for [' + path + '] [' + screen + ']');\n\t\t}\n\t\treturn screen;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisposeInternal() {\n\t\tif (this.activeScreen) {\n\t\t\tthis.removeScreen(this.activePath);\n\t\t}\n\t\tthis.clearScreensCache();\n\t\tthis.formEventHandler_.removeListener();\n\t\tthis.linkEventHandler_.removeListener();\n\t\tthis.appEventHandlers_.removeAllListeners();\n\t\tsuper.disposeInternal();\n\t}\n\n\t/**\n\t * Dispatches to the first route handler that matches the current path, if\n\t * any.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdispatch() {\n\t\treturn this.navigate(utils.getCurrentBrowserPath(), true);\n\t}\n\n\t/**\n\t * Starts navigation to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdoNavigate_(path, opt_replaceHistory) {\n\t\tif (this.activeScreen && this.activeScreen.beforeDeactivate()) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('Cancelled by active screen'));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tvar route = this.findRoute(path);\n\t\tif (!route) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('No route for ' + path));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tconsole.log('Navigate to [' + path + ']');\n\n\t\tthis.stopPendingNavigate_();\n\t\tthis.isNavigationPending = true;\n\n\t\tvar nextScreen = this.createScreenInstance(path, route);\n\n\t\treturn nextScreen.load(path)\n\t\t\t.then(() => {\n\t\t\t\tif (this.activeScreen) {\n\t\t\t\t\tthis.activeScreen.deactivate();\n\t\t\t\t}\n\t\t\t\tthis.prepareNavigateHistory_(path, nextScreen, opt_replaceHistory);\n\t\t\t\tthis.prepareNavigateSurfaces_(\n\t\t\t\t\tnextScreen,\n\t\t\t\t\tthis.surfaces,\n\t\t\t\t\troute.extractParams(path)\n\t\t\t\t);\n\t\t\t})\n\t\t\t.then(() => nextScreen.evaluateStyles(this.surfaces))\n\t\t\t.then(() => nextScreen.flip(this.surfaces))\n\t\t\t.then(() => nextScreen.evaluateScripts(this.surfaces))\n\t\t\t.then(() => this.syncScrollPositionSyncThenAsync_())\n\t\t\t.then(() => this.finalizeNavigate_(path, nextScreen))\n\t\t\t.catch((reason) => {\n\t\t\t\tthis.isNavigationPending = false;\n\t\t\t\tthis.handleNavigateError_(path, nextScreen, reason);\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * Finalizes a screen navigation.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @protected\n\t */\n\tfinalizeNavigate_(path, nextScreen) {\n\t\tnextScreen.activate();\n\n\t\tif (this.activeScreen && !this.activeScreen.isCacheable()) {\n\t\t\tif (this.activeScreen !== nextScreen) {\n\t\t\t\tthis.removeScreen(this.activePath);\n\t\t\t}\n\t\t}\n\n\t\tthis.activePath = path;\n\t\tthis.activeScreen = nextScreen;\n\t\tthis.screens[path] = nextScreen;\n\t\tthis.isNavigationPending = false;\n\t\tthis.pendingNavigate = null;\n\t\tglobals.capturedFormElement = null;\n\t\tconsole.log('Navigation done');\n\t}\n\n\t/**\n\t * Finds a route for the test path. Returns true if matches has a route,\n\t * otherwise returns null.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {?Object} Route handler if match any or null if the\n\t * path is the same as the current url and the path contains a fragment.\n\t */\n\tfindRoute(path) {\n\t\t// Prevents navigation if it's a hash change on the same url.\n\t\tif ((path.lastIndexOf('#') > -1) && utils.isCurrentBrowserPath(path)) {\n\t\t\treturn null;\n\t\t}\n\n\t\tpath = utils.getUrlPathWithoutHash(path);\n\n\t\t// Makes sure that the path substring will be in the expected format\n\t\t// (that is, will end with a \"/\").\n\t\tpath = utils.getUrlPathWithoutHash(path.substr(this.basePath.length));\n\n\t\tfor (var i = 0; i < this.routes.length; i++) {\n\t\t\tvar route = this.routes[i];\n\t\t\tif (route.matchesPath(path)) {\n\t\t\t\treturn route;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets allow prevent navigate.\n\t * @return {boolean}\n\t */\n\tgetAllowPreventNavigate() {\n\t\treturn this.allowPreventNavigate;\n\t}\n\n\t/**\n\t * Gets link base path.\n\t * @return {!string}\n\t */\n\tgetBasePath() {\n\t\treturn this.basePath;\n\t}\n\n\t/**\n\t * Gets the default page title.\n\t * @return {string} defaultTitle\n\t */\n\tgetDefaultTitle() {\n\t\treturn this.defaultTitle;\n\t}\n\n\t/**\n\t * Gets the form selector.\n\t * @return {!string}\n\t */\n\tgetFormSelector() {\n\t\treturn this.formSelector;\n\t}\n\n\t/**\n\t * Gets the link selector.\n\t * @return {!string}\n\t */\n\tgetLinkSelector() {\n\t\treturn this.linkSelector;\n\t}\n\n\t/**\n\t * Gets the loading css class.\n\t * @return {!string}\n\t */\n\tgetLoadingCssClass() {\n\t\treturn this.loadingCssClass;\n\t}\n\n\t/**\n\t * Gets the update scroll position value.\n\t * @return {boolean}\n\t */\n\tgetUpdateScrollPosition() {\n\t\treturn this.updateScrollPosition;\n\t}\n\n\t/**\n\t * Handle navigation error.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {!Error} error\n\t * @protected\n\t */\n\thandleNavigateError_(path, nextScreen, err) {\n\t\tconsole.log('Navigation error for [' + nextScreen + '] (' + err + ')');\n\t\tif (!utils.isCurrentBrowserPath(path)) {\n\t\t\tif (this.isNavigationPending && this.pendingNavigate) {\n\t\t\t\tthis.pendingNavigate.thenAlways(() => this.removeScreen(path), this);\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if app has routes.\n\t * @return {boolean}\n\t */\n\thasRoutes() {\n\t\treturn this.routes.length > 0;\n\t}\n\n\t/**\n\t * Tests if hostname is an offsite link.\n\t * @param {!string} hostname Link hostname to compare with\n\t * globals.window.location.hostname.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisLinkSameOrigin_(hostname) {\n\t\treturn hostname === globals.window.location.hostname;\n\t}\n\n\t/**\n\t * Tests if link element has the same app's base path.\n\t * @param {!string} path Link path containing the querystring part.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisSameBasePath_(path) {\n\t\treturn path.indexOf(this.basePath) === 0;\n\t}\n\n\t/**\n\t * Lock the document scroll in order to avoid the browser native back and\n\t * forward navigation to change the scroll position. In the end of\n\t * navigation lifecycle scroll is repositioned.\n\t * @protected\n\t */\n\tlockHistoryScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\t\t// Browsers are inconsistent when re-positioning the scroll history on\n\t\t// popstate. At some browsers, history scroll happens before popstate, then\n\t\t// lock the scroll on the last known position as soon as possible after the\n\t\t// current JS execution context and capture the current value. Some others,\n\t\t// history scroll happens after popstate, in this case, we bind an once\n\t\t// scroll event to lock the las known position. Lastly, the previous two\n\t\t// behaviors can happen even on the same browser, hence the race will decide\n\t\t// the winner.\n\t\tvar winner = false;\n\t\tvar switchScrollPositionRace = function() {\n\t\t\tglobals.document.removeEventListener('scroll', switchScrollPositionRace, false);\n\t\t\tif (!winner) {\n\t\t\t\tglobals.window.scrollTo(state.scrollLeft, state.scrollTop);\n\t\t\t\twinner = true;\n\t\t\t}\n\t\t};\n\t\tasync.nextTick(switchScrollPositionRace);\n\t\tglobals.document.addEventListener('scroll', switchScrollPositionRace, false);\n\t}\n\n\t/**\n\t * If supported by the browser, disables native scroll restoration and\n\t * stores current value.\n\t */\n\tmaybeDisableNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported) {\n\t\t\tthis.nativeScrollRestoration_ = globals.window.history.scrollRestoration;\n\t\t\tglobals.window.history.scrollRestoration = 'manual';\n\t\t}\n\t}\n\n\t/**\n\t * Maybe navigate to a path.\n\t * @param {string} href Information about the link's href.\n\t * @param {Event} event Dom event that initiated the navigation.\n\t */\n\tmaybeNavigate_(href, event) {\n\t\tif (!this.canNavigate(href)) {\n\t\t\treturn;\n\t\t}\n\n\t\tglobals.capturedFormElement = event.capturedFormElement;\n\n\t\tvar navigateFailed = false;\n\t\ttry {\n\t\t\tthis.navigate(utils.getUrlPath(href));\n\t\t} catch (err) {\n\t\t\t// Do not prevent link navigation in case some synchronous error occurs\n\t\t\tnavigateFailed = true;\n\t\t}\n\n\t\tif (!navigateFailed) {\n\t\t\tevent.preventDefault();\n\t\t}\n\t}\n\n\t/**\n\t * Maybe reposition scroll to hashed anchor.\n\t */\n\tmaybeRepositionScrollToHashedAnchor() {\n\t\tvar hash = globals.window.location.hash;\n\t\tif (hash) {\n\t\t\tvar anchorElement = globals.document.getElementById(hash.substring(1));\n\t\t\tif (anchorElement) {\n\t\t\t\tglobals.window.scrollTo(anchorElement.offsetLeft, anchorElement.offsetTop);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * If supported by the browser, restores native scroll restoration to the\n\t * value captured by `maybeDisableNativeScrollRestoration`.\n\t */\n\tmaybeRestoreNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported && this.nativeScrollRestoration_) {\n\t\t\tglobals.window.history.scrollRestoration = this.nativeScrollRestoration_;\n\t\t}\n\t}\n\n\t/**\n\t * Navigates to the specified path if there is a route handler that matches.\n\t * @param {!string} path Path to navigate containing the base path.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tnavigate(path, opt_replaceHistory) {\n\t\tif (!utils.isHtml5HistorySupported()) {\n\t\t\tthrow new Error('HTML5 History is not supported. Senna will not intercept navigation.');\n\t\t}\n\n\t\t// When reloading the same path do replaceState instead of pushState to\n\t\t// avoid polluting history with states with the same path.\n\t\tif (path === this.activePath) {\n\t\t\topt_replaceHistory = true;\n\t\t}\n\n\t\tthis.emit('beforeNavigate', {\n\t\t\tpath: path,\n\t\t\treplaceHistory: !!opt_replaceHistory\n\t\t});\n\n\t\treturn this.pendingNavigate;\n\t}\n\n\t/**\n\t * Befores navigation to a path.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonBeforeNavigate_(event) {\n\t\tif (globals.capturedFormElement) {\n\t\t\tevent.form = globals.capturedFormElement;\n\t\t}\n\t}\n\n\t/**\n\t * Befores navigation to a path. Runs after external listeners.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonBeforeNavigateDefault_(event) {\n\t\tif (this.pendingNavigate) {\n\t\t\tif (this.pendingNavigate.path === event.path) {\n\t\t\t\tconsole.log('Waiting...');\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\tthis.emit('startNavigate', {\n\t\t\tform: event.form,\n\t\t\tpath: event.path,\n\t\t\treplaceHistory: event.replaceHistory\n\t\t});\n\t}\n\n\t/**\n\t * Intercepts document clicks and test link elements in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocClickDelegate_(event) {\n\t\tif (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey || event.button) {\n\t\t\tconsole.log('Navigate aborted, invalid mouse button or modifier key pressed.');\n\t\t\treturn;\n\t\t}\n\t\tthis.maybeNavigate_(event.delegateTarget.href, event);\n\t}\n\n\t/**\n\t * Intercepts document form submits and test action path in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocSubmitDelegate_(event) {\n\t\tvar form = event.delegateTarget;\n\t\tif (form.method === 'get') {\n\t\t\tconsole.log('GET method not supported');\n\t\t\treturn;\n\t\t}\n\t\tevent.capturedFormElement = form;\n\t\tthis.maybeNavigate_(form.action, event);\n\t}\n\n\t/**\n\t * Listens to the window's load event in order to avoid issues with some browsers\n\t * that trigger popstate calls on the first load. For more information see\n\t * http://stackoverflow.com/questions/6421769/popstate-on-pages-load-in-chrome.\n\t * @protected\n\t */\n\tonLoad_() {\n\t\tthis.skipLoadPopstate = true;\n\t\tsetTimeout(() => {\n\t\t\t// The timeout ensures that popstate events will be unblocked right\n\t\t\t// after the load event occured, but not in the same event-loop cycle.\n\t\t\tthis.skipLoadPopstate = false;\n\t\t}, 0);\n\t\t// Try to reposition scroll to the hashed anchor when page loads.\n\t\tthis.maybeRepositionScrollToHashedAnchor();\n\t}\n\n\t/**\n\t * Handles browser history changes and fires app's navigation if the state\n\t * belows to us. If we detect a popstate and the state is null,\n\t * assume it is navigating to an external page or to a page we don't have\n\t * route, then globals.window.location.reload() is invoked in order to\n\t * reload the content to the current url.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonPopstate_(event) {\n\t\tif (this.skipLoadPopstate) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar state = event.state;\n\n\t\tif (!state) {\n\t\t\tif (globals.window.location.hash) {\n\t\t\t\t// If senna is on an redirect path and a hash popstate happens\n\t\t\t\t// to a different url, reload the browser. 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Updates history state and surfaces content.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t */\n\tprepareNavigateHistory_(path, nextScreen, opt_replaceHistory) {\n\t\tvar title = nextScreen.getTitle();\n\t\tif (!core.isString(title)) {\n\t\t\ttitle = this.getDefaultTitle();\n\t\t}\n\t\tvar redirectPath = nextScreen.beforeUpdateHistoryPath(path);\n\t\tvar historyState = {\n\t\t\tform: core.isDefAndNotNull(globals.capturedFormElement),\n\t\t\tredirectPath: redirectPath,\n\t\t\tpath: path,\n\t\t\tsenna: true,\n\t\t\tscrollTop: 0,\n\t\t\tscrollLeft: 0\n\t\t};\n\t\tif (opt_replaceHistory) {\n\t\t\thistoryState.scrollTop = this.popstateScrollTop;\n\t\t\thistoryState.scrollLeft = this.popstateScrollLeft;\n\t\t}\n\t\tthis.updateHistory_(title, redirectPath, nextScreen.beforeUpdateHistoryState(historyState), opt_replaceHistory);\n\t\tthis.redirectPath = redirectPath;\n\t}\n\n\t/**\n\t * Prepares screen flip. 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'...' : 'empty') + ']');\n\t\t});\n\t}\n\n\t/**\n\t * Reloads the page by performing `window.location.reload()`.\n\t */\n\treloadPage() {\n\t\tglobals.window.location.reload();\n\t}\n\n\t/**\n\t * Removes route instance from app routes.\n\t * @param {Route} route\n\t * @return {boolean} True if an element was removed.\n\t */\n\tremoveRoute(route) {\n\t\treturn array.remove(this.routes, route);\n\t}\n\n\t/**\n\t * Removes a screen.\n\t * @param {!string} path Path containing the querystring part.\n\t */\n\tremoveScreen(path) {\n\t\tvar screen = this.screens[path];\n\t\tif (screen) {\n\t\t\tObject.keys(this.surfaces).forEach((surfaceId) => this.surfaces[surfaceId].remove(screen.getId()));\n\t\t\tscreen.dispose();\n\t\t\tdelete this.screens[path];\n\t\t}\n\t}\n\n\t/**\n\t * Saves scroll position from page offset into history state.\n\t */\n\tsaveHistoryCurrentPageScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (state && state.senna) {\n\t\t\tstate.scrollTop = globals.window.pageYOffset;\n\t\t\tstate.scrollLeft = globals.window.pageXOffset;\n\t\t\tglobals.window.history.replaceState(state, null, null);\n\t\t}\n\t}\n\n\t/**\n\t * Sets allow prevent navigate.\n\t * @param {boolean} allowPreventNavigate\n\t */\n\tsetAllowPreventNavigate(allowPreventNavigate) {\n\t\tthis.allowPreventNavigate = allowPreventNavigate;\n\t}\n\n\t/**\n\t * Sets link base path.\n\t * @param {!string} path\n\t */\n\tsetBasePath(basePath) {\n\t\tthis.basePath = basePath;\n\t}\n\n\t/**\n\t * Sets the default page title.\n\t * @param {string} defaultTitle\n\t */\n\tsetDefaultTitle(defaultTitle) {\n\t\tthis.defaultTitle = defaultTitle;\n\t}\n\n\t/**\n\t * Sets the form selector.\n\t * @param {!string} formSelector\n\t */\n\tsetFormSelector(formSelector) {\n\t\tthis.formSelector = formSelector;\n\t\tif (this.formEventHandler_) {\n\t\t\tthis.formEventHandler_.removeListener();\n\t\t}\n\t\tthis.formEventHandler_ = dom.delegate(document, 'submit', this.formSelector, this.onDocSubmitDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the link selector.\n\t * @param {!string} linkSelector\n\t */\n\tsetLinkSelector(linkSelector) {\n\t\tthis.linkSelector = linkSelector;\n\t\tif (this.linkEventHandler_) {\n\t\t\tthis.linkEventHandler_.removeListener();\n\t\t}\n\t\tthis.linkEventHandler_ = dom.delegate(document, 'click', this.linkSelector, this.onDocClickDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the loading css class.\n\t * @param {!string} loadingCssClass\n\t */\n\tsetLoadingCssClass(loadingCssClass) {\n\t\tthis.loadingCssClass = loadingCssClass;\n\t}\n\n\t/**\n\t * Sets the update scroll position value.\n\t * @param {boolean} updateScrollPosition\n\t */\n\tsetUpdateScrollPosition(updateScrollPosition) {\n\t\tthis.updateScrollPosition = updateScrollPosition;\n\t}\n\n\t/**\n\t * Cancels pending navigate with Cancel pending navigation error.\n\t * @protected\n\t */\n\tstopPendingNavigate_() {\n\t\tif (this.pendingNavigate) {\n\t\t\tthis.pendingNavigate.cancel('Cancel pending navigation');\n\t\t\tthis.pendingNavigate = null;\n\t\t}\n\t}\n\n\t/**\n\t * Sync document scroll position twice, the first one synchronous and then\n\t * one inside async.nextTick. Relevant to browsers that fires\n\t * scroll restoration asynchronously after popstate.\n\t * @protected\n\t * @return {?CancellablePromise=}\n\t */\n\tsyncScrollPositionSyncThenAsync_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar scrollTop = state.scrollTop;\n\t\tvar scrollLeft = state.scrollLeft;\n\n\t\tvar sync = () => {\n\t\t\tif (this.updateScrollPosition) {\n\t\t\t\tglobals.window.scrollTo(scrollLeft, scrollTop);\n\t\t\t}\n\t\t};\n\n\t\treturn new CancellablePromise((resolve) => sync() & async.nextTick(() => sync() & resolve()));\n\t}\n\n\t/**\n\t * Updates or replace browser history.\n\t * @param {?string} title Document title.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!object} state\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @protected\n\t */\n\tupdateHistory_(title, path, state, opt_replaceHistory) {\n\t\tif (opt_replaceHistory) 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strict';\n\nimport { array, async, core } from 'metal';\nimport debounce from 'metal-debounce';\nimport dom from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\nimport { EventEmitter, EventHandler } from 'metal-events';\nimport utils from '../utils/utils';\nimport globals from '../globals/globals';\nimport Route from '../route/Route';\nimport Screen from '../screen/Screen';\nimport Surface from '../surface/Surface';\nimport Uri from 'metal-uri';\n\nclass App extends EventEmitter {\n\n\t/**\n\t * App class that handle routes and screens lifecycle.\n\t * @constructor\n\t * @extends {EventEmitter}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the active screen.\n\t\t * @type {?Screen}\n\t\t * @protected\n\t\t */\n\t\tthis.activeScreen = null;\n\n\t\t/**\n\t\t * Holds the active path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.activePath = null;\n\n\t\t/**\n\t\t * Allows prevent navigate from dom prevented event.\n\t\t * @type {boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.allowPreventNavigate = true;\n\n\t\t/**\n\t\t * Holds link base path.\n\t\t * @type {!string}\n\t\t * @default ''\n\t\t * @protected\n\t\t */\n\t\tthis.basePath = '';\n\n\t\t/**\n\t\t * Captures scroll position from scroll event.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.captureScrollPositionFromScrollEvent = true;\n\n\t\t/**\n\t\t * Holds the default page title.\n\t\t * @type {string}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.defaultTitle = globals.document.title;\n\n\t\t/**\n\t\t * Holds the form selector to define forms that are routed.\n\t\t * @type {!string}\n\t\t * @default form[enctype=\"multipart/form-data\"]:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.formSelector = 'form[enctype=\"multipart/form-data\"]:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the link selector to define links that are routed.\n\t\t * @type {!string}\n\t\t * @default a:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.linkSelector = 'a:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the loading css class.\n\t\t * @type {!string}\n\t\t * @default senna-loading\n\t\t * @protected\n\t\t */\n\t\tthis.loadingCssClass = 'senna-loading';\n\n\t\t/**\n\t\t * Using the History API to manage your URLs is awesome and, as it happens,\n\t\t * a crucial feature of good web apps. One of its downsides, however, is\n\t\t * that scroll positions are stored and then, more importantly, restored\n\t\t * whenever you traverse the history. This often means unsightly jumps as\n\t\t * the scroll position changes automatically, and especially so if your app\n\t\t * does transitions, or changes the contents of the page in any way.\n\t\t * Ultimately this leads to an horrible user experience. The good news is,\n\t\t * however, that there’s a potential fix: history.scrollRestoration.\n\t\t * https://developers.google.com/web/updates/2015/09/history-api-scroll-restoration\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.nativeScrollRestorationSupported = ('scrollRestoration' in globals.window.history);\n\n\t\t/**\n\t\t * When set to true there is a pendingNavigate that has not yet been\n\t\t * resolved or rejected.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.isNavigationPending = false;\n\n\t\t/**\n\t\t * Holds a deferred with the current navigation.\n\t\t * @type {?CancellablePromise}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.pendingNavigate = null;\n\n\t\t/**\n\t\t * Holds the window horizontal scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollLeft = 0;\n\n\t\t/**\n\t\t * Holds the window vertical scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollTop = 0;\n\n\t\t/**\n\t\t * Holds the redirect path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.redirectPath = null;\n\n\t\t/**\n\t\t * Holds the screen routes configuration.\n\t\t * @type {?Array}\n\t\t * @default []\n\t\t * @protected\n\t\t */\n\t\tthis.routes = [];\n\n\t\t/**\n\t\t * Maps the screen instances by the url containing the parameters.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.screens = {};\n\n\t\t/**\n\t\t * When set to true the first erroneous popstate fired on page load will be\n\t\t * ignored, only if globals.window.history.state is also\n\t\t * null.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.skipLoadPopstate = false;\n\n\t\t/**\n\t\t * Maps that index the surfaces instances by the surface id.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.surfaces = {};\n\n\t\t/**\n\t\t * When set to true, moves the scroll position after popstate, or to the\n\t\t * top of the viewport for new navigation. If false, the browser will\n\t\t * take care of scroll restoration.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.updateScrollPosition = true;\n\n\t\tthis.appEventHandlers_ = new EventHandler();\n\n\t\tthis.appEventHandlers_.add(\n\t\t\tdom.on(globals.window, 'scroll', debounce(this.onScroll_.bind(this), 100)),\n\t\t\tdom.on(globals.window, 'load', this.onLoad_.bind(this)),\n\t\t\tdom.on(globals.window, 'popstate', this.onPopstate_.bind(this))\n\t\t);\n\n\t\tthis.on('startNavigate', this.onStartNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigateDefault_, true);\n\n\t\tthis.setLinkSelector(this.linkSelector);\n\t\tthis.setFormSelector(this.formSelector);\n\t}\n\n\t/**\n\t * Adds one or more screens to the application.\n\t *\n\t * Example:\n\t *\n\t * \n\t * app.addRoutes({ path: '/foo', handler: FooScreen });\n\t * or\n\t * app.addRoutes([{ path: '/foo', handler: function(route) { return new FooScreen(); } }]);\n\t * \n\t *\n\t * @param {Object} or {Array} routes Single object or an array of object.\n\t * Each object should contain path and screen.\n\t * The path should be a string or a regex that maps the\n\t * navigation route to a screen class definition (not an instance), e.g:\n\t * { path: \"/home:param1\", handler: MyScreen }\n\t * { path: /foo.+/, handler: MyScreen }\n\t * @chainable\n\t */\n\taddRoutes(routes) {\n\t\tif (!Array.isArray(routes)) {\n\t\t\troutes = [routes];\n\t\t}\n\t\troutes.forEach((route) => {\n\t\t\tif (!(route instanceof Route)) {\n\t\t\t\troute = new Route(route.path, route.handler);\n\t\t\t}\n\t\t\tthis.routes.push(route);\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds one or more surfaces to the application.\n\t * @param {Surface|String|Array.} surfaces\n\t * Surface element id or surface instance. You can also pass an Array\n\t * whichcontains surface instances or id. In case of ID, these should be\n\t * the id of surface element.\n\t * @chainable\n\t */\n\taddSurfaces(surfaces) {\n\t\tif (!Array.isArray(surfaces)) {\n\t\t\tsurfaces = [surfaces];\n\t\t}\n\t\tsurfaces.forEach((surface) => {\n\t\t\tif (core.isString(surface)) {\n\t\t\t\tsurface = new Surface(surface);\n\t\t\t}\n\t\t\tthis.surfaces[surface.getId()] = surface;\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns if can navigate to path.\n\t * @param {!string} url\n\t * @return {boolean}\n\t */\n\tcanNavigate(url) {\n\t\tvar path = utils.getUrlPath(url);\n\t\tvar uri = new Uri(url);\n\n\t\tif (!this.isLinkSameOrigin_(uri.getHostname())) {\n\t\t\tconsole.log('Offsite link clicked');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.isSameBasePath_(path)) {\n\t\t\tconsole.log('Link clicked outside app\\'s base path');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.findRoute(path)) {\n\t\t\tconsole.log('No route for ' + path);\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Clear screens cache.\n\t * @chainable\n\t */\n\tclearScreensCache() {\n\t\tObject.keys(this.screens).forEach((path) => {\n\t\t\tif (path === this.activePath) {\n\t\t\t\tthis.activeScreen.clearCache();\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Retrieves or create a screen instance to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {Screen}\n\t */\n\tcreateScreenInstance(path, route) {\n\t\tif (!this.pendingNavigate && path === this.activePath) {\n\t\t\tconsole.log('Already at destination, refresh navigation');\n\t\t\treturn this.activeScreen;\n\t\t}\n\t\t/* jshint newcap: false */\n\t\tvar screen = this.screens[path];\n\t\tif (!screen) {\n\t\t\tvar handler = route.getHandler();\n\t\t\tif (handler === Screen || Screen.isImplementedBy(handler.prototype)) {\n\t\t\t\tscreen = new handler();\n\t\t\t} else {\n\t\t\t\tscreen = handler(route) || new Screen();\n\t\t\t}\n\t\t\tconsole.log('Create screen for [' + path + '] [' + screen + ']');\n\t\t}\n\t\treturn screen;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisposeInternal() {\n\t\tif (this.activeScreen) {\n\t\t\tthis.removeScreen(this.activePath);\n\t\t}\n\t\tthis.clearScreensCache();\n\t\tthis.formEventHandler_.removeListener();\n\t\tthis.linkEventHandler_.removeListener();\n\t\tthis.appEventHandlers_.removeAllListeners();\n\t\tsuper.disposeInternal();\n\t}\n\n\t/**\n\t * Dispatches to the first route handler that matches the current path, if\n\t * any.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdispatch() {\n\t\treturn this.navigate(utils.getCurrentBrowserPath(), true);\n\t}\n\n\t/**\n\t * Starts navigation to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdoNavigate_(path, opt_replaceHistory) {\n\t\tif (this.activeScreen && this.activeScreen.beforeDeactivate()) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('Cancelled by active screen'));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tvar route = this.findRoute(path);\n\t\tif (!route) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('No route for ' + path));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tconsole.log('Navigate to [' + path + ']');\n\n\t\tthis.stopPendingNavigate_();\n\t\tthis.isNavigationPending = true;\n\n\t\tvar nextScreen = this.createScreenInstance(path, route);\n\n\t\treturn nextScreen.load(path)\n\t\t\t.then(() => {\n\t\t\t\tif (this.activeScreen) {\n\t\t\t\t\tthis.activeScreen.deactivate();\n\t\t\t\t}\n\t\t\t\tthis.prepareNavigateHistory_(path, nextScreen, opt_replaceHistory);\n\t\t\t\tthis.prepareNavigateSurfaces_(\n\t\t\t\t\tnextScreen,\n\t\t\t\t\tthis.surfaces,\n\t\t\t\t\tthis.extractParams(route, path)\n\t\t\t\t);\n\t\t\t})\n\t\t\t.then(() => nextScreen.evaluateStyles(this.surfaces))\n\t\t\t.then(() => nextScreen.flip(this.surfaces))\n\t\t\t.then(() => nextScreen.evaluateScripts(this.surfaces))\n\t\t\t.then(() => this.syncScrollPositionSyncThenAsync_())\n\t\t\t.then(() => this.finalizeNavigate_(path, nextScreen))\n\t\t\t.catch((reason) => {\n\t\t\t\tthis.isNavigationPending = false;\n\t\t\t\tthis.handleNavigateError_(path, nextScreen, reason);\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * Extracts params according to the given path and route.\n\t * @param {!Route} route\n\t * @param {string} path\n\t * @param {!Object}\n\t */\n\textractParams(route, path) {\n\t\treturn route.extractParams(this.getRoutePath(path));\n\t}\n\n\t/**\n\t * Finalizes a screen navigation.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @protected\n\t */\n\tfinalizeNavigate_(path, nextScreen) {\n\t\tnextScreen.activate();\n\n\t\tif (this.activeScreen && !this.activeScreen.isCacheable()) {\n\t\t\tif (this.activeScreen !== nextScreen) {\n\t\t\t\tthis.removeScreen(this.activePath);\n\t\t\t}\n\t\t}\n\n\t\tthis.activePath = path;\n\t\tthis.activeScreen = nextScreen;\n\t\tthis.screens[path] = nextScreen;\n\t\tthis.isNavigationPending = false;\n\t\tthis.pendingNavigate = null;\n\t\tglobals.capturedFormElement = null;\n\t\tconsole.log('Navigation done');\n\t}\n\n\t/**\n\t * Finds a route for the test path. Returns true if matches has a route,\n\t * otherwise returns null.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {?Object} Route handler if match any or null if the\n\t * path is the same as the current url and the path contains a fragment.\n\t */\n\tfindRoute(path) {\n\t\t// Prevents navigation if it's a hash change on the same url.\n\t\tif ((path.lastIndexOf('#') > -1) && utils.isCurrentBrowserPath(path)) {\n\t\t\treturn null;\n\t\t}\n\n\t\tpath = this.getRoutePath(path);\n\t\tfor (var i = 0; i < this.routes.length; i++) {\n\t\t\tvar route = this.routes[i];\n\t\t\tif (route.matchesPath(path)) {\n\t\t\t\treturn route;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets allow prevent navigate.\n\t * @return {boolean}\n\t */\n\tgetAllowPreventNavigate() {\n\t\treturn this.allowPreventNavigate;\n\t}\n\n\t/**\n\t * Gets link base path.\n\t * @return {!string}\n\t */\n\tgetBasePath() {\n\t\treturn this.basePath;\n\t}\n\n\t/**\n\t * Gets the default page title.\n\t * @return {string} defaultTitle\n\t */\n\tgetDefaultTitle() {\n\t\treturn this.defaultTitle;\n\t}\n\n\t/**\n\t * Gets the form selector.\n\t * @return {!string}\n\t */\n\tgetFormSelector() {\n\t\treturn this.formSelector;\n\t}\n\n\t/**\n\t * Gets the link selector.\n\t * @return {!string}\n\t */\n\tgetLinkSelector() {\n\t\treturn this.linkSelector;\n\t}\n\n\t/**\n\t * Gets the loading css class.\n\t * @return {!string}\n\t */\n\tgetLoadingCssClass() {\n\t\treturn this.loadingCssClass;\n\t}\n\n\t/**\n\t * Returns the given path formatted to be matched by a route. This will, for\n\t * example, remove the base path from it.\n\t * @param {string} path\n\t * @return {string}\n\t */\n\tgetRoutePath(path) {\n\t\tpath = utils.getUrlPathWithoutHash(path);\n\t\t// Makes sure that the path substring will be in the expected format\n\t\t// (that is, will end with a \"/\"), even after removing the base path.\n\t\treturn utils.getUrlPathWithoutHash(path.substr(this.basePath.length));\n\t}\n\n\t/**\n\t * Gets the update scroll position value.\n\t * @return {boolean}\n\t */\n\tgetUpdateScrollPosition() {\n\t\treturn this.updateScrollPosition;\n\t}\n\n\t/**\n\t * Handle navigation error.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {!Error} error\n\t * @protected\n\t */\n\thandleNavigateError_(path, nextScreen, err) {\n\t\tconsole.log('Navigation error for [' + nextScreen + '] (' + err + ')');\n\t\tif (!utils.isCurrentBrowserPath(path)) {\n\t\t\tif (this.isNavigationPending && this.pendingNavigate) {\n\t\t\t\tthis.pendingNavigate.thenAlways(() => this.removeScreen(path), this);\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if app has routes.\n\t * @return {boolean}\n\t */\n\thasRoutes() {\n\t\treturn this.routes.length > 0;\n\t}\n\n\t/**\n\t * Tests if hostname is an offsite link.\n\t * @param {!string} hostname Link hostname to compare with\n\t * globals.window.location.hostname.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisLinkSameOrigin_(hostname) {\n\t\treturn hostname === globals.window.location.hostname;\n\t}\n\n\t/**\n\t * Tests if link element has the same app's base path.\n\t * @param {!string} path Link path containing the querystring part.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisSameBasePath_(path) {\n\t\treturn path.indexOf(this.basePath) === 0;\n\t}\n\n\t/**\n\t * Lock the document scroll in order to avoid the browser native back and\n\t * forward navigation to change the scroll position. In the end of\n\t * navigation lifecycle scroll is repositioned.\n\t * @protected\n\t */\n\tlockHistoryScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\t\t// Browsers are inconsistent when re-positioning the scroll history on\n\t\t// popstate. At some browsers, history scroll happens before popstate, then\n\t\t// lock the scroll on the last known position as soon as possible after the\n\t\t// current JS execution context and capture the current value. Some others,\n\t\t// history scroll happens after popstate, in this case, we bind an once\n\t\t// scroll event to lock the las known position. Lastly, the previous two\n\t\t// behaviors can happen even on the same browser, hence the race will decide\n\t\t// the winner.\n\t\tvar winner = false;\n\t\tvar switchScrollPositionRace = function() {\n\t\t\tglobals.document.removeEventListener('scroll', switchScrollPositionRace, false);\n\t\t\tif (!winner) {\n\t\t\t\tglobals.window.scrollTo(state.scrollLeft, state.scrollTop);\n\t\t\t\twinner = true;\n\t\t\t}\n\t\t};\n\t\tasync.nextTick(switchScrollPositionRace);\n\t\tglobals.document.addEventListener('scroll', switchScrollPositionRace, false);\n\t}\n\n\t/**\n\t * If supported by the browser, disables native scroll restoration and\n\t * stores current value.\n\t */\n\tmaybeDisableNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported) {\n\t\t\tthis.nativeScrollRestoration_ = globals.window.history.scrollRestoration;\n\t\t\tglobals.window.history.scrollRestoration = 'manual';\n\t\t}\n\t}\n\n\t/**\n\t * Maybe navigate to a path.\n\t * @param {string} href Information about the link's href.\n\t * @param {Event} event Dom event that initiated the navigation.\n\t */\n\tmaybeNavigate_(href, event) {\n\t\tif (!this.canNavigate(href)) {\n\t\t\treturn;\n\t\t}\n\n\t\tglobals.capturedFormElement = event.capturedFormElement;\n\n\t\tvar navigateFailed = false;\n\t\ttry {\n\t\t\tthis.navigate(utils.getUrlPath(href));\n\t\t} catch (err) {\n\t\t\t// Do not prevent link navigation in case some synchronous error occurs\n\t\t\tnavigateFailed = true;\n\t\t}\n\n\t\tif (!navigateFailed) {\n\t\t\tevent.preventDefault();\n\t\t}\n\t}\n\n\t/**\n\t * Maybe reposition scroll to hashed anchor.\n\t */\n\tmaybeRepositionScrollToHashedAnchor() {\n\t\tvar hash = globals.window.location.hash;\n\t\tif (hash) {\n\t\t\tvar anchorElement = globals.document.getElementById(hash.substring(1));\n\t\t\tif (anchorElement) {\n\t\t\t\tglobals.window.scrollTo(anchorElement.offsetLeft, anchorElement.offsetTop);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * If supported by the browser, restores native scroll restoration to the\n\t * value captured by `maybeDisableNativeScrollRestoration`.\n\t */\n\tmaybeRestoreNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported && this.nativeScrollRestoration_) {\n\t\t\tglobals.window.history.scrollRestoration = this.nativeScrollRestoration_;\n\t\t}\n\t}\n\n\t/**\n\t * Navigates to the specified path if there is a route handler that matches.\n\t * @param {!string} path Path to navigate containing the base path.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tnavigate(path, opt_replaceHistory) {\n\t\tif (!utils.isHtml5HistorySupported()) {\n\t\t\tthrow new Error('HTML5 History is not supported. Senna will not intercept navigation.');\n\t\t}\n\n\t\t// When reloading the same path do replaceState instead of pushState to\n\t\t// avoid polluting history with states with the same path.\n\t\tif (path === this.activePath) {\n\t\t\topt_replaceHistory = true;\n\t\t}\n\n\t\tthis.emit('beforeNavigate', {\n\t\t\tpath: path,\n\t\t\treplaceHistory: !!opt_replaceHistory\n\t\t});\n\n\t\treturn this.pendingNavigate;\n\t}\n\n\t/**\n\t * Befores navigation to a path.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonBeforeNavigate_(event) {\n\t\tif (globals.capturedFormElement) {\n\t\t\tevent.form = globals.capturedFormElement;\n\t\t}\n\t}\n\n\t/**\n\t * Befores navigation to a path. Runs after external listeners.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonBeforeNavigateDefault_(event) {\n\t\tif (this.pendingNavigate) {\n\t\t\tif (this.pendingNavigate.path === event.path) {\n\t\t\t\tconsole.log('Waiting...');\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\tthis.emit('startNavigate', {\n\t\t\tform: event.form,\n\t\t\tpath: event.path,\n\t\t\treplaceHistory: event.replaceHistory\n\t\t});\n\t}\n\n\t/**\n\t * Intercepts document clicks and test link elements in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocClickDelegate_(event) {\n\t\tif (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey || event.button) {\n\t\t\tconsole.log('Navigate aborted, invalid mouse button or modifier key pressed.');\n\t\t\treturn;\n\t\t}\n\t\tthis.maybeNavigate_(event.delegateTarget.href, event);\n\t}\n\n\t/**\n\t * Intercepts document form submits and test action path in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocSubmitDelegate_(event) {\n\t\tvar form = event.delegateTarget;\n\t\tif (form.method === 'get') {\n\t\t\tconsole.log('GET method not supported');\n\t\t\treturn;\n\t\t}\n\t\tevent.capturedFormElement = form;\n\t\tthis.maybeNavigate_(form.action, event);\n\t}\n\n\t/**\n\t * Listens to the window's load event in order to avoid issues with some browsers\n\t * that trigger popstate calls on the first load. For more information see\n\t * http://stackoverflow.com/questions/6421769/popstate-on-pages-load-in-chrome.\n\t * @protected\n\t */\n\tonLoad_() {\n\t\tthis.skipLoadPopstate = true;\n\t\tsetTimeout(() => {\n\t\t\t// The timeout ensures that popstate events will be unblocked right\n\t\t\t// after the load event occured, but not in the same event-loop cycle.\n\t\t\tthis.skipLoadPopstate = false;\n\t\t}, 0);\n\t\t// Try to reposition scroll to the hashed anchor when page loads.\n\t\tthis.maybeRepositionScrollToHashedAnchor();\n\t}\n\n\t/**\n\t * Handles browser history changes and fires app's navigation if the state\n\t * belows to us. If we detect a popstate and the state is null,\n\t * assume it is navigating to an external page or to a page we don't have\n\t * route, then globals.window.location.reload() is invoked in order to\n\t * reload the content to the current url.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonPopstate_(event) {\n\t\tif (this.skipLoadPopstate) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar state = event.state;\n\n\t\tif (!state) {\n\t\t\tif (globals.window.location.hash) {\n\t\t\t\t// If senna is on an redirect path and a hash popstate happens\n\t\t\t\t// to a different url, reload the browser. This behavior doesn't\n\t\t\t\t// require senna to route hashed links and is closer to native\n\t\t\t\t// browser behavior.\n\t\t\t\tif (this.redirectPath && !utils.isCurrentBrowserPath(this.redirectPath)) {\n\t\t\t\t\tthis.reloadPage();\n\t\t\t\t}\n\t\t\t\t// Always try to reposition scroll to the hashed anchor when\n\t\t\t\t// hash popstate happens.\n\t\t\t\tthis.maybeRepositionScrollToHashedAnchor();\n\t\t\t} else {\n\t\t\t\tthis.reloadPage();\n\t\t\t}\n\t\t\treturn;\n\t\t}\n\n\t\tif (state.senna) {\n\t\t\tconsole.log('History navigation to [' + state.path + ']');\n\t\t\tthis.popstateScrollTop = state.scrollTop;\n\t\t\tthis.popstateScrollLeft = state.scrollLeft;\n\t\t\tif (!this.nativeScrollRestorationSupported) {\n\t\t\t\tthis.lockHistoryScrollPosition_();\n\t\t\t}\n\t\t\tthis.navigate(state.path, true);\n\t\t}\n\t}\n\n\t/**\n\t * Listens document scroll changes in order to capture the possible lock\n\t * scroll position for history scrolling.\n\t * @protected\n\t */\n\tonScroll_() {\n\t\tif (this.captureScrollPositionFromScrollEvent) {\n\t\t\tthis.saveHistoryCurrentPageScrollPosition_();\n\t\t}\n\t}\n\n\t/**\n\t * Starts navigation to a path.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonStartNavigate_(event) {\n\t\tthis.maybeDisableNativeScrollRestoration();\n\t\tthis.captureScrollPositionFromScrollEvent = false;\n\t\tdom.addClasses(globals.document.documentElement, this.loadingCssClass);\n\n\t\tvar endNavigatePayload = {\n\t\t\tform: event.form,\n\t\t\tpath: event.path\n\t\t};\n\n\t\tthis.pendingNavigate = this.doNavigate_(event.path, event.replaceHistory)\n\t\t\t.catch((reason) => {\n\t\t\t\tendNavigatePayload.error = reason;\n\t\t\t\tthrow reason;\n\t\t\t})\n\t\t\t.thenAlways(() => {\n\t\t\t\tif (!this.pendingNavigate) {\n\t\t\t\t\tdom.removeClasses(globals.document.documentElement, this.loadingCssClass);\n\t\t\t\t\tthis.maybeRestoreNativeScrollRestoration();\n\t\t\t\t\tthis.captureScrollPositionFromScrollEvent = true;\n\t\t\t\t}\n\t\t\t\tthis.emit('endNavigate', endNavigatePayload);\n\t\t\t});\n\n\t\tthis.pendingNavigate.path = event.path;\n\t}\n\n\t/**\n\t * Prefetches the specified path if there is a route handler that matches.\n\t * @param {!string} path Path to navigate containing the base path.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tprefetch(path) {\n\t\tvar route = this.findRoute(path);\n\t\tif (!route) {\n\t\t\treturn CancellablePromise.reject(new CancellablePromise.CancellationError('No route for ' + path));\n\t\t}\n\n\t\tconsole.log('Prefetching [' + path + ']');\n\n\t\tvar nextScreen = this.createScreenInstance(path, route);\n\n\t\treturn nextScreen.load(path)\n\t\t\t.then(() => this.screens[path] = nextScreen)\n\t\t\t.catch((reason) => {\n\t\t\t\tthis.handleNavigateError_(path, nextScreen, reason);\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * Prepares screen flip. Updates history state and surfaces content.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t */\n\tprepareNavigateHistory_(path, nextScreen, opt_replaceHistory) {\n\t\tvar title = nextScreen.getTitle();\n\t\tif (!core.isString(title)) {\n\t\t\ttitle = this.getDefaultTitle();\n\t\t}\n\t\tvar redirectPath = nextScreen.beforeUpdateHistoryPath(path);\n\t\tvar historyState = {\n\t\t\tform: core.isDefAndNotNull(globals.capturedFormElement),\n\t\t\tredirectPath: redirectPath,\n\t\t\tpath: path,\n\t\t\tsenna: true,\n\t\t\tscrollTop: 0,\n\t\t\tscrollLeft: 0\n\t\t};\n\t\tif (opt_replaceHistory) {\n\t\t\thistoryState.scrollTop = this.popstateScrollTop;\n\t\t\thistoryState.scrollLeft = this.popstateScrollLeft;\n\t\t}\n\t\tthis.updateHistory_(title, redirectPath, nextScreen.beforeUpdateHistoryState(historyState), opt_replaceHistory);\n\t\tthis.redirectPath = redirectPath;\n\t}\n\n\t/**\n\t * Prepares screen flip. Updates history state and surfaces content.\n\t * @param {!Screen} nextScreen\n\t * @param {!Object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @param {!Object} params Params extracted from the current path.\n\t */\n\tprepareNavigateSurfaces_(nextScreen, surfaces, params) {\n\t\tObject.keys(surfaces).forEach((id) => {\n\t\t\tvar surfaceContent = nextScreen.getSurfaceContent(id, params);\n\t\t\tsurfaces[id].addContent(nextScreen.getId(), surfaceContent);\n\t\t\tconsole.log('Screen [' + nextScreen.getId() + '] add content to surface ' +\n\t\t\t\t'[' + surfaces[id] + '] [' + (core.isDefAndNotNull(surfaceContent) ? '...' : 'empty') + ']');\n\t\t});\n\t}\n\n\t/**\n\t * Reloads the page by performing `window.location.reload()`.\n\t */\n\treloadPage() {\n\t\tglobals.window.location.reload();\n\t}\n\n\t/**\n\t * Removes route instance from app routes.\n\t * @param {Route} route\n\t * @return {boolean} True if an element was removed.\n\t */\n\tremoveRoute(route) {\n\t\treturn array.remove(this.routes, route);\n\t}\n\n\t/**\n\t * Removes a screen.\n\t * @param {!string} path Path containing the querystring part.\n\t */\n\tremoveScreen(path) {\n\t\tvar screen = this.screens[path];\n\t\tif (screen) {\n\t\t\tObject.keys(this.surfaces).forEach((surfaceId) => this.surfaces[surfaceId].remove(screen.getId()));\n\t\t\tscreen.dispose();\n\t\t\tdelete this.screens[path];\n\t\t}\n\t}\n\n\t/**\n\t * Saves scroll position from page offset into history state.\n\t */\n\tsaveHistoryCurrentPageScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (state && state.senna) {\n\t\t\tstate.scrollTop = globals.window.pageYOffset;\n\t\t\tstate.scrollLeft = globals.window.pageXOffset;\n\t\t\tglobals.window.history.replaceState(state, null, null);\n\t\t}\n\t}\n\n\t/**\n\t * Sets allow prevent navigate.\n\t * @param {boolean} allowPreventNavigate\n\t */\n\tsetAllowPreventNavigate(allowPreventNavigate) {\n\t\tthis.allowPreventNavigate = allowPreventNavigate;\n\t}\n\n\t/**\n\t * Sets link base path.\n\t * @param {!string} path\n\t */\n\tsetBasePath(basePath) {\n\t\tthis.basePath = basePath;\n\t}\n\n\t/**\n\t * Sets the default page title.\n\t * @param {string} defaultTitle\n\t */\n\tsetDefaultTitle(defaultTitle) {\n\t\tthis.defaultTitle = defaultTitle;\n\t}\n\n\t/**\n\t * Sets the form selector.\n\t * @param {!string} formSelector\n\t */\n\tsetFormSelector(formSelector) {\n\t\tthis.formSelector = formSelector;\n\t\tif (this.formEventHandler_) {\n\t\t\tthis.formEventHandler_.removeListener();\n\t\t}\n\t\tthis.formEventHandler_ = dom.delegate(document, 'submit', this.formSelector, this.onDocSubmitDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the link selector.\n\t * @param {!string} linkSelector\n\t */\n\tsetLinkSelector(linkSelector) {\n\t\tthis.linkSelector = linkSelector;\n\t\tif (this.linkEventHandler_) {\n\t\t\tthis.linkEventHandler_.removeListener();\n\t\t}\n\t\tthis.linkEventHandler_ = dom.delegate(document, 'click', this.linkSelector, this.onDocClickDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the loading css class.\n\t * @param {!string} loadingCssClass\n\t */\n\tsetLoadingCssClass(loadingCssClass) {\n\t\tthis.loadingCssClass = loadingCssClass;\n\t}\n\n\t/**\n\t * Sets the update scroll position value.\n\t * @param {boolean} updateScrollPosition\n\t */\n\tsetUpdateScrollPosition(updateScrollPosition) {\n\t\tthis.updateScrollPosition = updateScrollPosition;\n\t}\n\n\t/**\n\t * Cancels pending navigate with Cancel pending navigation error.\n\t * @protected\n\t */\n\tstopPendingNavigate_() {\n\t\tif (this.pendingNavigate) {\n\t\t\tthis.pendingNavigate.cancel('Cancel pending navigation');\n\t\t\tthis.pendingNavigate = null;\n\t\t}\n\t}\n\n\t/**\n\t * Sync document scroll position twice, the first one synchronous and then\n\t * one inside async.nextTick. Relevant to browsers that fires\n\t * scroll restoration asynchronously after popstate.\n\t * @protected\n\t * @return {?CancellablePromise=}\n\t */\n\tsyncScrollPositionSyncThenAsync_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar scrollTop = state.scrollTop;\n\t\tvar scrollLeft = state.scrollLeft;\n\n\t\tvar sync = () => {\n\t\t\tif (this.updateScrollPosition) {\n\t\t\t\tglobals.window.scrollTo(scrollLeft, scrollTop);\n\t\t\t}\n\t\t};\n\n\t\treturn new CancellablePromise((resolve) => sync() & async.nextTick(() => sync() & resolve()));\n\t}\n\n\t/**\n\t * Updates or replace browser history.\n\t * @param {?string} title Document title.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!object} state\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @protected\n\t */\n\tupdateHistory_(title, path, state, opt_replaceHistory) {\n\t\tif (opt_replaceHistory) {\n\t\t\tglobals.window.history.replaceState(state, title, path);\n\t\t} else {\n\t\t\tglobals.window.history.pushState(state, title, path);\n\t\t}\n\t\tglobals.document.title = title;\n\t}\n\n}\n\nexport default App;\n"],"sourceRoot":"/source/"} \ No newline at end of file diff --git a/build/globals/senna-debug.js b/build/globals/senna-debug.js index 36f75a4..f0bd41f 100644 --- a/build/globals/senna-debug.js +++ b/build/globals/senna-debug.js @@ -1,7 +1,7 @@ /** * Senna.js - A blazing-fast Single Page Application engine * @author Liferay, Inc. - * @version v2.0.2 + * @version v2.0.3 * @link http://sennajs.com * @license BSD-3-Clause */ @@ -7159,7 +7159,7 @@ babelHelpers; _this5.activeScreen.deactivate(); } _this5.prepareNavigateHistory_(path, nextScreen, opt_replaceHistory); - _this5.prepareNavigateSurfaces_(nextScreen, _this5.surfaces, route.extractParams(path)); + _this5.prepareNavigateSurfaces_(nextScreen, _this5.surfaces, _this5.extractParams(route, path)); }).then(function () { return nextScreen.evaluateStyles(_this5.surfaces); }).then(function () { @@ -7177,6 +7177,19 @@ babelHelpers; }); } + /** + * Extracts params according to the given path and route. + * @param {!Route} route + * @param {string} path + * @param {!Object} + */ + + }, { + key: 'extractParams', + value: function extractParams(route, path) { + return route.extractParams(this.getRoutePath(path)); + } + /** * Finalizes a screen navigation. * @param {!string} path Path containing the querystring part. @@ -7220,12 +7233,7 @@ babelHelpers; return null; } - path = utils.getUrlPathWithoutHash(path); - - // Makes sure that the path substring will be in the expected format - // (that is, will end with a "/"). - path = utils.getUrlPathWithoutHash(path.substr(this.basePath.length)); - + path = this.getRoutePath(path); for (var i = 0; i < this.routes.length; i++) { var route = this.routes[i]; if (route.matchesPath(path)) { @@ -7302,6 +7310,22 @@ babelHelpers; return this.loadingCssClass; } + /** + * Returns the given path formatted to be matched by a route. This will, for + * example, remove the base path from it. + * @param {string} path + * @return {string} + */ + + }, { + key: 'getRoutePath', + value: function getRoutePath(path) { + path = utils.getUrlPathWithoutHash(path); + // Makes sure that the path substring will be in the expected format + // (that is, will end with a "/"), even after removing the base path. + return utils.getUrlPathWithoutHash(path.substr(this.basePath.length)); + } + /** * Gets the update scroll position value. * @return {boolean} diff --git a/build/globals/senna-min.js b/build/globals/senna-min.js index e4f3a08..1b4bdb9 100644 --- a/build/globals/senna-min.js +++ b/build/globals/senna-min.js @@ -1,10 +1,10 @@ /** * Senna.js - A blazing-fast Single Page Application engine * @author Liferay, Inc. - * @version v2.0.2 + * @version v2.0.3 * @link http://sennajs.com * @license BSD-3-Clause */ (function(){this.senna=this.senna||{},this.sennaNamed=this.sennaNamed||{};var e={};e["typeof"]="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},e.classCallCheck=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},e.createClass=function(){function e(e,t){for(var n=0;n0&&void 0!==arguments[0]?arguments[0]:{};b=e}function r(){return b||"undefined"!=typeof window&&window.__METAL_COMPATIBILITY__&&i(window.__METAL_COMPATIBILITY__),b}function s(e){if(!e.name){var t=e.toString();e.name=t.substring(9,t.indexOf("("))}return e.name}function o(e,t){if(e){var n=e[S];return t&&!e.hasOwnProperty(S)&&(n=null),n||(e[S]=C++)}return C++}function l(e){return e}function u(e){return"boolean"==typeof e}function c(e){return void 0!==e}function h(e){return c(e)&&!v(e)}function d(t){return t&&"object"===("undefined"==typeof t?"undefined":e["typeof"](t))&&9===t.nodeType}function f(t){return t&&"object"===("undefined"==typeof t?"undefined":e["typeof"](t))&&1===t.nodeType}function m(e){return"function"==typeof e}function v(e){return null===e}function p(e){return"number"==typeof e}function y(e){return null!==e&&e===e.window}function g(t){var n="undefined"==typeof t?"undefined":e["typeof"](t);return"object"===n&&null!==t||"function"===n}function _(t){return t&&"object"===("undefined"==typeof t?"undefined":e["typeof"](t))&&"function"==typeof t.then}function k(e){return"string"==typeof e||e instanceof String}function E(e,t,a){var i=t+"_MERGED";if(e.hasOwnProperty(i))return!1;var r=n(e,t);return a&&(r=a(r)),e[i]=r,!0}function N(){}var b=void 0,C=1,S="core_"+(1e9*Math.random()>>>0);this.sennaNamed.coreNamed=this.sennaNamed.coreNamed||{},this.sennaNamed.coreNamed.UID_PROPERTY=S,this.sennaNamed.coreNamed.abstractMethod=t,this.sennaNamed.coreNamed.collectSuperClassesProperty=n,this.sennaNamed.coreNamed.disableCompatibilityMode=a,this.sennaNamed.coreNamed.enableCompatibilityMode=i,this.sennaNamed.coreNamed.getCompatibilityModeData=r,this.sennaNamed.coreNamed.getFunctionName=s,this.sennaNamed.coreNamed.getUid=o,this.sennaNamed.coreNamed.identityFunction=l,this.sennaNamed.coreNamed.isBoolean=u,this.sennaNamed.coreNamed.isDef=c,this.sennaNamed.coreNamed.isDefAndNotNull=h,this.sennaNamed.coreNamed.isDocument=d,this.sennaNamed.coreNamed.isElement=f,this.sennaNamed.coreNamed.isFunction=m,this.sennaNamed.coreNamed.isNull=v,this.sennaNamed.coreNamed.isNumber=p,this.sennaNamed.coreNamed.isWindow=y,this.sennaNamed.coreNamed.isObject=g,this.sennaNamed.coreNamed.isPromise=_,this.sennaNamed.coreNamed.isString=k,this.sennaNamed.coreNamed.mergeSuperClassesProperty=E,this.sennaNamed.coreNamed.nullFunction=N}.call(this),function(){var e=this.sennaNamed.coreNamed;this.senna.core=e,this.sennaNamed.core=this.sennaNamed.core||{},this.sennaNamed.core.core=e,Object.keys(this.sennaNamed.coreNamed).forEach(function(e){this.sennaNamed.core[e]=this.sennaNamed.coreNamed[e]})}.call(this),function(){var t=this.sennaNamed.core.isDef,n=function(){function n(){e.classCallCheck(this,n)}return e.createClass(n,null,[{key:"equal",value:function(e,t){if(e.length!==t.length)return!1;for(var n=0;n=0)&&n.removeAt(e,i),a}},{key:"removeAt",value:function(e,t){return 1===Array.prototype.splice.call(e,t,1).length}},{key:"slice",value:function(e,n,a){for(var i=[],r=t(a)?a:e.length,s=n;s0&&void 0!==arguments[0]?arguments[0]:"";e.classCallCheck(this,a),this.url=a.parse(this.maybeAddProtocolAndHostname_(t))}return e.createClass(a,[{key:"addParametersFromMultiMap",value:function(e){var t=this;return e.names().forEach(function(n){e.getAll(n).forEach(function(e){t.addParameterValue(n,e)})}),this}},{key:"addParameterValue",value:function(e,n){return this.ensureQueryInitialized_(),t(n)&&(n=String(n)),this.query.add(e,n),this}},{key:"addParameterValues",value:function(e,t){var n=this;return t.forEach(function(t){return n.addParameterValue(e,t)}),this}},{key:"ensureQueryInitialized_",value:function(){var n=this;if(!this.query){this.query=new i;var r=this.url.search;r&&r.substring(1).split("&").forEach(function(i){var r=i.split("="),s=e.slicedToArray(r,2),o=s[0],l=s[1];t(l)&&(l=a.urlDecode(l)),n.addParameterValue(o,l)})}}},{key:"getHash",value:function(){return this.url.hash||""}},{key:"getHost",value:function(){var e=this.getHostname();if(e){var t=this.getPort();t&&"80"!==t&&(e+=":"+t)}return e}},{key:"getHostname",value:function(){var e=this.url.hostname;return e===a.HOSTNAME_PLACEHOLDER?"":e}},{key:"getOrigin",value:function(){var e=this.getHost();return e?this.getProtocol()+"//"+e:""}},{key:"getParameterValue",value:function(e){return this.ensureQueryInitialized_(),this.query.get(e)}},{key:"getParameterValues",value:function(e){return this.ensureQueryInitialized_(),this.query.getAll(e)}},{key:"getParameterNames",value:function(){return this.ensureQueryInitialized_(),this.query.names()}},{key:"getPathname",value:function(){return this.url.pathname}},{key:"getPort",value:function(){return this.url.port}},{key:"getProtocol",value:function(){return this.url.protocol}},{key:"getSearch",value:function(){var e=this,n="",a="";return this.getParameterNames().forEach(function(n){e.getParameterValues(n).forEach(function(e){a+=n,t(e)&&(a+="="+encodeURIComponent(e)),a+="&"})}),a=a.slice(0,-1),a&&(n+="?"+a),n}},{key:"hasParameter",value:function(e){return this.ensureQueryInitialized_(),this.query.contains(e)}},{key:"makeUnique",value:function(){return this.setParameterValue(a.RANDOM_PARAM,n.getRandomString()),this}},{key:"maybeAddProtocolAndHostname_",value:function(e){var t=e;if(e.indexOf("://")===-1&&0!==e.indexOf("javascript:"))switch(t=a.DEFAULT_PROTOCOL,"/"===e[0]&&"/"===e[1]||(t+="//"),e.charAt(0)){case".":case"?":case"#":t+=a.HOSTNAME_PLACEHOLDER,t+="/",t+=e;break;case"":case"/":"/"!==e[1]&&(t+=a.HOSTNAME_PLACEHOLDER),t+=e;break;default:t+=e}return t}},{key:"removeParameter",value:function(e){return this.ensureQueryInitialized_(),this.query.remove(e),this}},{key:"removeUnique",value:function(){return this.removeParameter(a.RANDOM_PARAM),this}},{key:"setHash",value:function(e){return this.url.hash=e,this}},{key:"setHostname",value:function(e){return this.url.hostname=e,this}},{key:"setParameterValue",value:function(e,t){return this.removeParameter(e),this.addParameterValue(e,t),this}},{key:"setParameterValues",value:function(e,t){var n=this;return this.removeParameter(e),t.forEach(function(t){return n.addParameterValue(e,t)}),this}},{key:"setPathname",value:function(e){return this.url.pathname=e,this}},{key:"setPort",value:function(e){return this.url.port=e,this}},{key:"setProtocol",value:function(e){return this.url.protocol=e,":"!==this.url.protocol[this.url.protocol.length-1]&&(this.url.protocol+=":"),this}},{key:"toString",value:function(){var e="",t=this.getHost();return t&&(e+=this.getProtocol()+"//"),e+=t+this.getPathname()+this.getSearch()+this.getHash()}}],[{key:"getParseFn",value:function(){return r}},{key:"normalizeObject",value:function(e){var t=e.pathname?e.pathname.length:0;return t>1&&"/"===e.pathname[t-1]&&(e.pathname=e.pathname.substr(0,t-1)),e}},{key:"parse",value:function(e){return a.normalizeObject(r(e))}},{key:"setParseFn",value:function(e){r=e}},{key:"joinPaths",value:function(e){for(var t=arguments.length,n=Array(t>1?t-1:0),a=1;athis.maxListeners_&&!i.warned&&(i.warned=!0)}},{key:"disposeInternal",value:function(){this.events_=[]}},{key:"emit",value:function(e){var n,a=t.slice(arguments,1),i=(this.events_[e]||[]).concat();this.getShouldUseFacade()&&(n={preventDefault:function(){n.preventedDefault=!0},target:this,type:e},a.push(n));for(var r=[],s=0;s0}},{key:"getShouldUseFacade",value:function(){return this.shouldUseFacade_}},{key:"listeners",value:function(e){return(this.events_[e]||[]).map(function(e){return e.fn})}},{key:"many",value:function(e,t,n){e=this.normalizeEvents_(e);for(var a=0;a=0;n--)this.matchesListener_(e[n],t)&&e.splice(n,1)}},{key:"removeListener",value:function(){return this.off.apply(this,arguments)}},{key:"setMaxListeners",value:function(e){return this.maxListeners_=e,this}},{key:"setShouldUseFacade",value:function(e){return this.shouldUseFacade_=e,this}},{key:"validateListener_",value:function(e){if(!a(e))throw new TypeError("Listener must be a function")}}]),s}(n);this.senna.EventEmitter=s}.call(this),function(){var t=this.sennaNamed.metal.array,n=this.sennaNamed.metal.object,a=this.sennaNamed.metal.Disposable,i=function(a){function i(t,a,r,s){e.classCallCheck(this,i);var o=e.possibleConstructorReturn(this,(i.__proto__||Object.getPrototypeOf(i)).call(this));return o.blacklist_=n.mixin({newListener:!0},r),o.originEmitter_=t,o.pendingEvents_=[],o.proxiedEvents_={},o.targetEmitter_=a,o.whitelist_=s,o.startProxy_(),o}return e.inherits(i,a),e.createClass(i,[{key:"addListener_",value:function(e,t){return this.originEmitter_.on(e,t)}},{key:"addListenerForEvent_",value:function(e){return this.addListener_(e,this.emitOnTarget_.bind(this,e))}},{key:"disposeInternal",value:function(){this.removeListeners_(),this.proxiedEvents_=null,this.originEmitter_=null,this.targetEmitter_=null}},{key:"emitOnTarget_",value:function(e){var n=[e].concat(t.slice(arguments,1));this.targetEmitter_.emit.apply(this.targetEmitter_,n)}},{key:"proxyEvent",value:function(e){this.shouldProxyEvent_(e)&&this.tryToAddListener_(e)}},{key:"removeListeners_",value:function(){for(var e=Object.keys(this.proxiedEvents_),t=0;t"+e,t.removeChild(t.firstChild);for(var n=document.createDocumentFragment();t.firstChild;)n.appendChild(t.firstChild);return n}function c(e,t){return J(e)?e.documentElement.contains(t):e.contains(t)}function h(e,t,n,r,o){var l=te[t];return l&&l.delegate&&(t=l.originalEvent,r=l.handler.bind(l,r)),o&&(r=r.bind(),r.defaultListener_=!0),s(e,t),G(n)?i(e,t,n,r):a(n,t,r),new X(G(n)?e:n,t,r,G(n)?n:null)}function d(e,t,n){if(n&&"click"===t&&2===n.button)return!1;var a=["BUTTON","INPUT","SELECT","TEXTAREA","FIELDSET"];return!("click"===t&&a.indexOf(e.tagName)>-1)||!(e.disabled||P(e,"fieldset[disabled]"))}function f(e){e&&l(document.body,e)}function m(e){e&&e.parentNode&&e.parentNode.removeChild(e)}function v(e){b(e);var t=z(e[ne])?e[ne]:e.target,n=!0,a=e.currentTarget,i=e.currentTarget.parentNode,r=[];return n&=U(a,t,e,i,r),n&=x(r,e),e.delegateTarget=null,e[ne]=i,n}function p(e,t){return"classList"in e?y(e,t):g(e,t)}function y(e,t){return e.classList.contains(t)}function g(e,t){return(" "+e.className+" ").indexOf(" "+t+" ")>=0}function _(e){return 0===e.childNodes.length}function k(e,t){if(!e||1!==e.nodeType)return!1;var n=Element.prototype,a=n.matches||n.webkitMatchesSelector||n.mozMatchesSelector||n.msMatchesSelector||n.oMatchesSelector;return a?a.call(e,t):E(e,t)}function E(e,t){for(var n=document.querySelectorAll(t,e.parentNode),a=0;a0?this.unhandledRejectionId_=0:0===l.UNHANDLED_REJECTION_DELAY&&(this.hadUnhandledRejection_=!1);try{var n=this;e.call(t,function(e){n.resolve_(l.State_.FULFILLED,e)},function(e){n.resolve_(l.State_.REJECTED,e)})}catch(a){this.resolve_(l.State_.REJECTED,a)}};o.UNHANDLED_REJECTION_DELAY=0,o.State_={PENDING:0,BLOCKED:1,FULFILLED:2,REJECTED:3},o.CallbackEntry_=null,o.resolve=function(e){return new o(function(t){t(e)})},o.reject=function(e){return new o(function(t,n){n(e)})},o.race=function(e){return new o(function(t,n){e.length||t(void 0);for(var a,i=0;a=e[i];i++)a.then(t,n)})},o.all=function(e){return new o(function(t,n){var a=e.length,i=[];if(!a)return void t(i);for(var r,o=function(e,n){a--,i[e]=n,0===a&&t(i)},l=function(e){n(e)},u=0;r=e[u];u++)r.then(s(o,u),l)})},o.firstFulfilled=function(e){return new o(function(t,n){var a=e.length,i=[];if(!a)return void t(void 0);for(var r,o=function(e){t(e)},l=function(e,t){a--,i[e]=t,0===a&&n(i)},u=0;r=e[u];u++)r.then(o,s(l,u))})},o.prototype.then=function(e,t,a){return this.addChildPromise_(n(e)?e:null,n(t)?t:null,a)},r.addImplementation(o),o.prototype.thenAlways=function(e,t){var n=function(){try{e.call(t)}catch(n){o.handleRejection_.call(null,n)}};return this.addCallbackEntry_({child:null,onRejected:n,onFulfilled:n}),this},o.prototype.thenCatch=function(e,t){return this.addChildPromise_(null,e,t)},o.prototype["catch"]=o.prototype.thenCatch,o.prototype.cancel=function(e){this.state_===o.State_.PENDING&&i.run(function(){var t=new o.CancellationError(e);t.IS_CANCELLATION_ERROR=!0,this.cancelInternal_(t)},this)},o.prototype.cancelInternal_=function(e){this.state_===o.State_.PENDING&&(this.parent_?this.parent_.cancelChild_(this,e):this.resolve_(o.State_.REJECTED,e))},o.prototype.cancelChild_=function(e,t){if(this.callbackEntries_){for(var n,a=0,i=-1,r=0;n=this.callbackEntries_[r];r++){var s=n.child;if(s&&(a++,s===e&&(i=r),i>=0&&a>1))break}if(i>=0)if(this.state_===o.State_.PENDING&&1===a)this.cancelInternal_(t);else{var l=this.callbackEntries_.splice(i,1)[0];this.executeCallback_(l,o.State_.REJECTED,t)}}},o.prototype.addCallbackEntry_=function(e){this.callbackEntries_&&this.callbackEntries_.length||this.state_!==o.State_.FULFILLED&&this.state_!==o.State_.REJECTED||this.scheduleCallbacks_(),this.callbackEntries_||(this.callbackEntries_=[]),this.callbackEntries_.push(e)},o.prototype.addChildPromise_=function(e,n,a){var i={child:null,onFulfilled:null,onRejected:null};return i.child=new o(function(r,s){i.onFulfilled=e?function(t){try{var n=e.call(a,t);r(n)}catch(i){s(i)}}:r,i.onRejected=n?function(e){try{var i=n.call(a,e);!t(i)&&e.IS_CANCELLATION_ERROR?s(e):r(i)}catch(o){s(o)}}:s}),i.child.parent_=this,this.addCallbackEntry_(i),i.child},o.prototype.unblockAndFulfill_=function(e){if(this.state_!==o.State_.BLOCKED)throw new Error("CancellablePromise is not blocked.");this.state_=o.State_.PENDING,this.resolve_(o.State_.FULFILLED,e)},o.prototype.unblockAndReject_=function(e){if(this.state_!==o.State_.BLOCKED)throw new Error("CancellablePromise is not blocked.");this.state_=o.State_.PENDING,this.resolve_(o.State_.REJECTED,e)},o.prototype.resolve_=function(e,t){if(this.state_===o.State_.PENDING){if(this===t)e=o.State_.REJECTED,t=new TypeError("CancellablePromise cannot resolve to itself");else{if(r.isImplementedBy(t))return t=t,this.state_=o.State_.BLOCKED,void t.then(this.unblockAndFulfill_,this.unblockAndReject_,this);if(a(t))try{var i=t.then;if(n(i))return void this.tryThen_(t,i)}catch(s){e=o.State_.REJECTED,t=s}}this.result_=t,this.state_=e,this.scheduleCallbacks_(),e!==o.State_.REJECTED||t.IS_CANCELLATION_ERROR||o.addUnhandledRejection_(this,t)}},o.prototype.tryThen_=function(e,t){this.state_=o.State_.BLOCKED;var n=this,a=!1,i=function(e){a||(a=!0,n.unblockAndFulfill_(e))},r=function(e){a||(a=!0,n.unblockAndReject_(e))};try{t.call(e,i,r)}catch(s){r(s)}},o.prototype.scheduleCallbacks_=function(){this.executing_||(this.executing_=!0,i.run(this.executeCallbacks_,this))},o.prototype.executeCallbacks_=function(){for(;this.callbackEntries_&&this.callbackEntries_.length;){var e=this.callbackEntries_;this.callbackEntries_=[];for(var t=0;t0)for(e=this;e&&e.unhandledRejectionId_;e=e.parent_)clearTimeout(e.unhandledRejectionId_),e.unhandledRejectionId_=0;else if(0===o.UNHANDLED_REJECTION_DELAY)for(e=this;e&&e.hadUnhandledRejection_;e=e.parent_)e.hadUnhandledRejection_=!1},o.addUnhandledRejection_=function(e,t){o.UNHANDLED_REJECTION_DELAY>0?e.unhandledRejectionId_=setTimeout(function(){o.handleRejection_.call(null,t)},o.UNHANDLED_REJECTION_DELAY):0===o.UNHANDLED_REJECTION_DELAY&&(e.hadUnhandledRejection_=!0,i.run(function(){e.hadUnhandledRejection_&&o.handleRejection_.call(null,t)}))},o.handleRejection_=i.throwException,o.setUnhandledRejectionHandler=function(e){o.handleRejection_=e},o.CancellationError=function(t){function n(t){e.classCallCheck(this,n);var a=e.possibleConstructorReturn(this,(n.__proto__||Object.getPrototypeOf(n)).call(this,t));return t&&(a.message=t),a}return e.inherits(n,t),n}(Error),o.CancellationError.prototype.name="cancel",this.sennaNamed.Promise=this.sennaNamed.Promise||{},this.sennaNamed.Promise.CancellablePromise=o,this.senna.Promise=o}.call(this),function(){function e(e){return{match:e[0],prefix:e[1],name:e[2],paramPattern:e[3],unnamedPattern:e[4],modifier:e[5]}}function t(e){for(var t="",r=0;r-1)}}]),r}();this.senna.Route=r}.call(this),function(){var t=this.sennaNamed.metal.Disposable,n=function(t){function n(){e.classCallCheck(this,n);var t=e.possibleConstructorReturn(this,(n.__proto__||Object.getPrototypeOf(n)).call(this));return t.cache=null,t.cacheable=!1,t}return e.inherits(n,t),e.createClass(n,[{key:"addCache",value:function(e){return this.cacheable&&(this.cache=e),this}},{key:"clearCache",value:function(){return this.cache=null,this}},{key:"disposeInternal",value:function(){this.clearCache()}},{key:"getCache",value:function(){return this.cache}},{key:"isCacheable",value:function(){return this.cacheable}},{key:"setCacheable",value:function(e){e||this.clearCache(),this.cacheable=e}}]),n}(t);this.senna.Cacheable=n}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.sennaNamed.dom.globalEval,a=this.senna.Cacheable,i=this.senna.Promise,r=function(a){function r(){e.classCallCheck(this,r);var n=e.possibleConstructorReturn(this,(r.__proto__||Object.getPrototypeOf(r)).call(this));return n.id=n.makeId_(t.getUid()),n.title=null,n}return e.inherits(r,a),e.createClass(r,[{key:"activate",value:function(){}},{key:"beforeDeactivate",value:function(){}},{key:"beforeUpdateHistoryPath",value:function(e){return e}},{key:"beforeUpdateHistoryState",value:function(e){return e}},{key:"deactivate",value:function(){}},{key:"disposeInternal",value:function(){e.get(r.prototype.__proto__||Object.getPrototypeOf(r.prototype),"disposeInternal",this).call(this)}},{key:"evaluateScripts",value:function(e){return Object.keys(e).forEach(function(t){e[t].activeChild&&n.runScriptsInElement(e[t].activeChild)}),i.resolve()}},{key:"evaluateStyles",value:function(){return i.resolve()}},{key:"flip",value:function(e){var t=this,n=[];return Object.keys(e).forEach(function(a){var i=e[a],r=i.show(t.id);n.push(r)}),i.all(n)}},{key:"getId",value:function(){return this.id}},{key:"getSurfaceContent",value:function(){}},{key:"getTitle",value:function(){return this.title}},{key:"load",value:function(){return i.resolve()}},{key:"makeId_",value:function(e){return"screen_"+e}},{key:"setId",value:function(e){this.id=e}},{key:"setTitle",value:function(e){this.title=e}},{key:"toString",value:function(){return this.id}}]),r}(a);r.isImplementedBy=function(e){return e instanceof r},this.senna.Screen=r}.call(this),function(){var t=this.senna.globals,n=this.sennaNamed.metal.core,a=this.sennaNamed.metal.Disposable,i=this.senna.dom,r=this.senna.Promise,s=function(a){function s(t){e.classCallCheck(this,s);var n=e.possibleConstructorReturn(this,(s.__proto__||Object.getPrototypeOf(s)).call(this));if(!t)throw new Error("Surface element id not specified. A surface element requires a valid id.");return n.activeChild=null,n.defaultChild=null,n.element=null,n.id=t,n.transitionFn=null,n.defaultChild=n.getChild(s.DEFAULT),n.maybeWrapContentAsDefault_(),n.activeChild=n.defaultChild,n}return e.inherits(s,a),e.createClass(s,[{key:"addContent",value:function(e,t){var a=this.defaultChild;n.isDefAndNotNull(t)&&(a=this.getChild(e),a?i.removeChildren(a):(a=this.createChild(e),this.transition(a,null)),i.append(a,t));var r=this.getElement();return r&&a&&i.append(r,a),a}},{key:"createChild",value:function(e){var n=t.document.createElement("div");return n.setAttribute("id",this.makeId_(e)),n}},{key:"getChild",value:function(e){return t.document.getElementById(this.makeId_(e))}},{key:"getElement",value:function(){return this.element?this.element:(this.element=t.document.getElementById(this.id),this.element)}},{key:"getId",value:function(){return this.id}},{key:"getTransitionFn",value:function(){return this.transitionFn}},{key:"makeId_",value:function(e){return this.id+"-"+e}},{key:"maybeWrapContentAsDefault_",value:function(){var e=this.getElement();if(e&&!this.defaultChild){for(var n=t.document.createDocumentFragment();e.firstChild;)n.appendChild(e.firstChild);this.defaultChild=this.addContent(s.DEFAULT,n),this.transition(null,this.defaultChild)}}},{key:"setId",value:function(e){this.id=e}},{key:"setTransitionFn",value:function(e){this.transitionFn=e}},{key:"show",value:function(e){var t=this.activeChild,n=this.getChild(e);return n||(n=this.defaultChild),this.activeChild=n,this.transition(t,n).thenAlways(function(){t&&t!==n&&i.exitDocument(t)})}},{key:"remove",value:function(e){var t=this.getChild(e);t&&i.exitDocument(t)}},{key:"toString",value:function(){return this.id}},{key:"transition",value:function(e,t){var n=this.transitionFn||s.defaultTransition;return r.resolve(n.call(this,e,t))}}]),s}(a);s.DEFAULT="default",s.defaultTransition=function(e,t){e&&(e.style.display="none",e.classList.remove("flipped")),t&&(t.style.display="block",t.classList.add("flipped"))},this.senna.Surface=s}.call(this),function(){var t=this.sennaNamed.metal.array,n=this.sennaNamed.metal.async,a=this.sennaNamed.metal.core,i=this.senna.debounce,r=this.senna.dom,s=this.senna.Promise,o=this.sennaNamed.events.EventEmitter,l=this.sennaNamed.events.EventHandler,u=this.senna.utils,c=this.senna.globals,h=this.senna.Route,d=this.senna.Screen,f=this.senna.Surface,m=this.senna.Uri,v=function(o){function v(){e.classCallCheck(this,v);var t=e.possibleConstructorReturn(this,(v.__proto__||Object.getPrototypeOf(v)).call(this));return t.activeScreen=null,t.activePath=null,t.allowPreventNavigate=!0,t.basePath="",t.captureScrollPositionFromScrollEvent=!0,t.defaultTitle=c.document.title,t.formSelector='form[enctype="multipart/form-data"]:not([data-senna-off])',t.linkSelector="a:not([data-senna-off])",t.loadingCssClass="senna-loading",t.nativeScrollRestorationSupported="scrollRestoration"in c.window.history,t.isNavigationPending=!1,t.pendingNavigate=null,t.popstateScrollLeft=0,t.popstateScrollTop=0,t.redirectPath=null,t.routes=[],t.screens={},t.skipLoadPopstate=!1,t.surfaces={},t.updateScrollPosition=!0,t.appEventHandlers_=new l,t.appEventHandlers_.add(r.on(c.window,"scroll",i(t.onScroll_.bind(t),100)),r.on(c.window,"load",t.onLoad_.bind(t)),r.on(c.window,"popstate",t.onPopstate_.bind(t))),t.on("startNavigate",t.onStartNavigate_),t.on("beforeNavigate",t.onBeforeNavigate_),t.on("beforeNavigate",t.onBeforeNavigateDefault_,!0),t.setLinkSelector(t.linkSelector),t.setFormSelector(t.formSelector),t}return e.inherits(v,o),e.createClass(v,[{key:"addRoutes",value:function(e){var t=this;return Array.isArray(e)||(e=[e]),e.forEach(function(e){e instanceof h||(e=new h(e.path,e.handler)),t.routes.push(e)}),this}},{key:"addSurfaces",value:function(e){var t=this;return Array.isArray(e)||(e=[e]),e.forEach(function(e){a.isString(e)&&(e=new f(e)),t.surfaces[e.getId()]=e}),this}},{key:"canNavigate",value:function(e){var t=u.getUrlPath(e),n=new m(e);return!!this.isLinkSameOrigin_(n.getHostname())&&(!!this.isSameBasePath_(t)&&!!this.findRoute(t))}},{key:"clearScreensCache",value:function(){var e=this;Object.keys(this.screens).forEach(function(t){t===e.activePath?e.activeScreen.clearCache():e.removeScreen(t)})}},{key:"createScreenInstance",value:function(e,t){if(!this.pendingNavigate&&e===this.activePath)return this.activeScreen;var n=this.screens[e];if(!n){var a=t.getHandler();n=a===d||d.isImplementedBy(a.prototype)?new a:a(t)||new d}return n}},{key:"disposeInternal",value:function(){this.activeScreen&&this.removeScreen(this.activePath),this.clearScreensCache(),this.formEventHandler_.removeListener(),this.linkEventHandler_.removeListener(),this.appEventHandlers_.removeAllListeners(),e.get(v.prototype.__proto__||Object.getPrototypeOf(v.prototype),"disposeInternal",this).call(this)}},{key:"dispatch",value:function(){return this.navigate(u.getCurrentBrowserPath(),!0)}},{key:"doNavigate_",value:function(e,t){var n=this;if(this.activeScreen&&this.activeScreen.beforeDeactivate())return this.pendingNavigate=s.reject(new s.CancellationError("Cancelled by active screen")),this.pendingNavigate;var a=this.findRoute(e);if(!a)return this.pendingNavigate=s.reject(new s.CancellationError("No route for "+e)),this.pendingNavigate;this.stopPendingNavigate_(),this.isNavigationPending=!0;var i=this.createScreenInstance(e,a);return i.load(e).then(function(){n.activeScreen&&n.activeScreen.deactivate(),n.prepareNavigateHistory_(e,i,t),n.prepareNavigateSurfaces_(i,n.surfaces,a.extractParams(e))}).then(function(){return i.evaluateStyles(n.surfaces)}).then(function(){return i.flip(n.surfaces)}).then(function(){return i.evaluateScripts(n.surfaces)}).then(function(){return n.syncScrollPositionSyncThenAsync_()}).then(function(){return n.finalizeNavigate_(e,i)})["catch"](function(t){throw n.isNavigationPending=!1,n.handleNavigateError_(e,i,t),t})}},{key:"finalizeNavigate_",value:function(e,t){t.activate(),this.activeScreen&&!this.activeScreen.isCacheable()&&this.activeScreen!==t&&this.removeScreen(this.activePath),this.activePath=e,this.activeScreen=t,this.screens[e]=t,this.isNavigationPending=!1,this.pendingNavigate=null,c.capturedFormElement=null}},{key:"findRoute",value:function(e){if(e.lastIndexOf("#")>-1&&u.isCurrentBrowserPath(e))return null;e=u.getUrlPathWithoutHash(e),e=u.getUrlPathWithoutHash(e.substr(this.basePath.length));for(var t=0;t0}},{key:"isLinkSameOrigin_",value:function(e){return e===c.window.location.hostname}},{key:"isSameBasePath_",value:function(e){return 0===e.indexOf(this.basePath)}},{key:"lockHistoryScrollPosition_",value:function(){var e=c.window.history.state;if(e){var t=!1,a=function i(){c.document.removeEventListener("scroll",i,!1),t||(c.window.scrollTo(e.scrollLeft,e.scrollTop),t=!0)};n.nextTick(a),c.document.addEventListener("scroll",a,!1)}}},{key:"maybeDisableNativeScrollRestoration",value:function(){this.nativeScrollRestorationSupported&&(this.nativeScrollRestoration_=c.window.history.scrollRestoration,c.window.history.scrollRestoration="manual")}},{key:"maybeNavigate_",value:function(e,t){if(this.canNavigate(e)){c.capturedFormElement=t.capturedFormElement;var n=!1;try{this.navigate(u.getUrlPath(e))}catch(a){n=!0}n||t.preventDefault()}}},{key:"maybeRepositionScrollToHashedAnchor",value:function(){var e=c.window.location.hash;if(e){var t=c.document.getElementById(e.substring(1));t&&c.window.scrollTo(t.offsetLeft,t.offsetTop)}}},{key:"maybeRestoreNativeScrollRestoration",value:function(){this.nativeScrollRestorationSupported&&this.nativeScrollRestoration_&&(c.window.history.scrollRestoration=this.nativeScrollRestoration_)}},{key:"navigate",value:function(e,t){if(!u.isHtml5HistorySupported())throw new Error("HTML5 History is not supported. Senna will not intercept navigation.");return e===this.activePath&&(t=!0),this.emit("beforeNavigate",{path:e,replaceHistory:!!t}),this.pendingNavigate}},{key:"onBeforeNavigate_",value:function(e){c.capturedFormElement&&(e.form=c.capturedFormElement)}},{key:"onBeforeNavigateDefault_",value:function(e){this.pendingNavigate&&this.pendingNavigate.path===e.path||this.emit("startNavigate",{form:e.form,path:e.path,replaceHistory:e.replaceHistory})}},{key:"onDocClickDelegate_",value:function(e){e.altKey||e.ctrlKey||e.metaKey||e.shiftKey||e.button||this.maybeNavigate_(e.delegateTarget.href,e)}},{key:"onDocSubmitDelegate_",value:function(e){var t=e.delegateTarget;"get"!==t.method&&(e.capturedFormElement=t,this.maybeNavigate_(t.action,e))}},{key:"onLoad_",value:function(){var e=this;this.skipLoadPopstate=!0,setTimeout(function(){e.skipLoadPopstate=!1},0),this.maybeRepositionScrollToHashedAnchor()}},{key:"onPopstate_",value:function(e){if(!this.skipLoadPopstate){var t=e.state;return t?void(t.senna&&(this.popstateScrollTop=t.scrollTop,this.popstateScrollLeft=t.scrollLeft,this.nativeScrollRestorationSupported||this.lockHistoryScrollPosition_(),this.navigate(t.path,!0))):void(c.window.location.hash?(this.redirectPath&&!u.isCurrentBrowserPath(this.redirectPath)&&this.reloadPage(),this.maybeRepositionScrollToHashedAnchor()):this.reloadPage())}}},{key:"onScroll_",value:function(){this.captureScrollPositionFromScrollEvent&&this.saveHistoryCurrentPageScrollPosition_()}},{key:"onStartNavigate_",value:function(e){var t=this;this.maybeDisableNativeScrollRestoration(),this.captureScrollPositionFromScrollEvent=!1,r.addClasses(c.document.documentElement,this.loadingCssClass);var n={form:e.form,path:e.path};this.pendingNavigate=this.doNavigate_(e.path,e.replaceHistory)["catch"](function(e){throw n.error=e,e}).thenAlways(function(){t.pendingNavigate||(r.removeClasses(c.document.documentElement,t.loadingCssClass),t.maybeRestoreNativeScrollRestoration(),t.captureScrollPositionFromScrollEvent=!0),t.emit("endNavigate",n)}),this.pendingNavigate.path=e.path}},{key:"prefetch",value:function(e){var t=this,n=this.findRoute(e);if(!n)return s.reject(new s.CancellationError("No route for "+e));var a=this.createScreenInstance(e,n);return a.load(e).then(function(){return t.screens[e]=a})["catch"](function(n){throw t.handleNavigateError_(e,a,n),n})}},{key:"prepareNavigateHistory_",value:function(e,t,n){var i=t.getTitle();a.isString(i)||(i=this.getDefaultTitle());var r=t.beforeUpdateHistoryPath(e),s={form:a.isDefAndNotNull(c.capturedFormElement),redirectPath:r,path:e,senna:!0,scrollTop:0,scrollLeft:0};n&&(s.scrollTop=this.popstateScrollTop,s.scrollLeft=this.popstateScrollLeft),this.updateHistory_(i,r,t.beforeUpdateHistoryState(s),n),this.redirectPath=r}},{key:"prepareNavigateSurfaces_",value:function(e,t,n){Object.keys(t).forEach(function(a){var i=e.getSurfaceContent(a,n);t[a].addContent(e.getId(),i)})}},{key:"reloadPage",value:function(){c.window.location.reload()}},{key:"removeRoute",value:function(e){return t.remove(this.routes,e)}},{key:"removeScreen",value:function(e){var t=this,n=this.screens[e];n&&(Object.keys(this.surfaces).forEach(function(e){return t.surfaces[e].remove(n.getId())}),n.dispose(),delete this.screens[e])}},{key:"saveHistoryCurrentPageScrollPosition_",value:function(){var e=c.window.history.state;e&&e.senna&&(e.scrollTop=c.window.pageYOffset,e.scrollLeft=c.window.pageXOffset,c.window.history.replaceState(e,null,null))}},{key:"setAllowPreventNavigate",value:function(e){this.allowPreventNavigate=e}},{key:"setBasePath",value:function(e){this.basePath=e}},{key:"setDefaultTitle",value:function(e){this.defaultTitle=e}},{key:"setFormSelector",value:function(e){this.formSelector=e,this.formEventHandler_&&this.formEventHandler_.removeListener(),this.formEventHandler_=r.delegate(document,"submit",this.formSelector,this.onDocSubmitDelegate_.bind(this),this.allowPreventNavigate)}},{key:"setLinkSelector",value:function(e){this.linkSelector=e,this.linkEventHandler_&&this.linkEventHandler_.removeListener(),this.linkEventHandler_=r.delegate(document,"click",this.linkSelector,this.onDocClickDelegate_.bind(this),this.allowPreventNavigate)}},{key:"setLoadingCssClass",value:function(e){this.loadingCssClass=e}},{key:"setUpdateScrollPosition",value:function(e){this.updateScrollPosition=e}},{key:"stopPendingNavigate_",value:function(){this.pendingNavigate&&(this.pendingNavigate.cancel("Cancel pending navigation"),this.pendingNavigate=null)}},{key:"syncScrollPositionSyncThenAsync_",value:function(){var e=this,t=c.window.history.state;if(t){var a=t.scrollTop,i=t.scrollLeft,r=function(){e.updateScrollPosition&&c.window.scrollTo(i,a)};return new s(function(e){return r()&n.nextTick(function(){return r()&e()})})}}},{key:"updateHistory_",value:function(e,t,n,a){a?c.window.history.replaceState(n,e,t):c.window.history.pushState(n,e,t),c.document.title=e}}]),v}(o);this.senna.App=v}.call(this),function(){var t=this.sennaNamed.metal.isDef,n=this.sennaNamed.metal.isDefAndNotNull,a=this.senna.Uri,i=this.sennaNamed.Promise.CancellablePromise,r=function(){ -function r(){e.classCallCheck(this,r)}return e.createClass(r,null,[{key:"parseResponseHeaders",value:function(e){var t=[];if(!e)return t;for(var n=e.split("\r\n"),a=0;a0){var r=n[a].substring(0,i),s=n[a].substring(i+2);t.push({name:r,value:s})}}return t}},{key:"request",value:function s(e,r,o,l,u,c,h,d){e=e||"",r=r||"GET";var s=new XMLHttpRequest,f=new i(function(e,t){s.onload=function(){return s.aborted?void s.onerror():void e(s)},s.onerror=function(){var e=new Error("Request error");e.request=s,t(e)}}).thenCatch(function(e){throw s.abort(),e}).thenAlways(function(){clearTimeout(m)});if(u&&(e=new a(e).addParametersFromMultiMap(u).toString()),s.open(r,e,!h),d&&(s.withCredentials=!0),l&&l.names().forEach(function(e){s.setRequestHeader(e,l.getAll(e).join(", "))}),s.send(t(o)?o:null),n(c))var m=setTimeout(function(){f.cancel("Request timeout")},c);return f}}]),r}();this.senna.Ajax=r}.call(this),function(){var t=function n(){e.classCallCheck(this,n)};t.INVALID_STATUS="Invalid status code",t.REQUEST_ERROR="Request error",t.REQUEST_TIMEOUT="Request timeout",this.senna.errors=t}.call(this),function(){var t=function(){function t(){e.classCallCheck(this,t)}return e.createClass(t,null,[{key:"getNativeUserAgent",value:function(){var e=t.globals.window.navigator;if(e){var n=e.userAgent;if(n)return n}return""}},{key:"getNativePlatform",value:function(){var e=t.globals.window.navigator;if(e){var n=e.platform;if(n)return n}return""}},{key:"matchPlatform",value:function(e){return t.platform.indexOf(e)!==-1}},{key:"matchUserAgent",value:function(e){return t.userAgent.indexOf(e)!==-1}},{key:"testUserAgent",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"",n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"";t.userAgent=e,t.platform=n,t.isMac=t.matchPlatform("Mac"),t.isWin=t.matchPlatform("Win"),t.isOpera=t.matchUserAgent("Opera")||t.matchUserAgent("OPR"),t.isIe=t.matchUserAgent("Trident")||t.matchUserAgent("MSIE"),t.isEdge=t.matchUserAgent("Edge"),t.isIeOrEdge=t.isIe||t.isEdge,t.isChrome=(t.matchUserAgent("Chrome")||t.matchUserAgent("CriOS"))&&!t.isOpera&&!t.isEdge,t.isSafari=t.matchUserAgent("Safari")&&!(t.isChrome||t.isOpera||t.isEdge),t.isFirefox=t.matchUserAgent("Firefox")}}]),t}();t.globals={window:window},t.testUserAgent(t.getNativeUserAgent(),t.getNativePlatform()),this.senna.UA=t}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.senna.Ajax,a=this.sennaNamed.structs.MultiMap,i=this.senna.Promise,r=this.senna.errors,s=this.senna.utils,o=this.senna.globals,l=this.senna.Screen,u=this.senna.Uri,c=this.senna.UA,h=function(l){function h(){e.classCallCheck(this,h);var t=e.possibleConstructorReturn(this,(h.__proto__||Object.getPrototypeOf(h)).call(this));return t.cacheable=!0,t.httpHeaders={"X-PJAX":"true","X-Requested-With":"XMLHttpRequest"},t.httpMethod=h.GET,t.request=null,t.timeout=3e4,t}return e.inherits(h,l),e.createClass(h,[{key:"assertValidResponseStatusCode",value:function(e){if(!this.isValidResponseStatusCode(e)){var t=new Error(r.INVALID_STATUS);throw t.invalidStatus=!0,t}}},{key:"beforeUpdateHistoryPath",value:function(e){var t=this.getRequestPath();return t&&t!==e?t:e}},{key:"beforeUpdateHistoryState",value:function(e){return e.senna&&e.form&&e.redirectPath===e.path?null:e}},{key:"formatLoadPath",value:function(e){var t=new u(e);return t.setHostname(o.window.location.hostname),t.setProtocol(o.window.location.protocol),o.window.location.port&&t.setPort(o.window.location.port),c.isIeOrEdge&&this.httpMethod===h.GET?t.makeUnique().toString():t.toString()}},{key:"getHttpHeaders",value:function(){return this.httpHeaders}},{key:"getHttpMethod",value:function(){return this.httpMethod}},{key:"getRequestPath",value:function(){var e=this.getRequest();if(e){var t=e.requestPath,n=this.maybeExtractResponseUrlFromRequest(e);return n&&(t=n),c.isIeOrEdge&&this.httpMethod===h.GET&&(t=new u(t).removeUnique().toString()),s.getUrlPath(t)}return null}},{key:"getRequest",value:function(){return this.request}},{key:"getTimeout",value:function(){return this.timeout}},{key:"isValidResponseStatusCode",value:function(e){return e>=200&&e<=399}},{key:"load",value:function(e){var s=this,l=this.getCache();if(t.isDefAndNotNull(l))return i.resolve(l);var u=null,d=this.httpMethod,f=new a;Object.keys(this.httpHeaders).forEach(function(e){return f.add(e,s.httpHeaders[e])}),o.capturedFormElement&&(u=new FormData(o.capturedFormElement),d=h.POST,c.isIeOrEdge&&f.add("If-None-Match",'"0"'));var m=this.formatLoadPath(e);return n.request(m,d,u,f,null,this.timeout).then(function(e){return s.setRequest(e),s.assertValidResponseStatusCode(e.status),d===h.GET&&s.isCacheable()&&s.addCache(e.responseText),e.requestPath=m,e.responseText})["catch"](function(e){switch(e.message){case r.REQUEST_TIMEOUT:e.timeout=!0;break;case r.REQUEST_ERROR:e.requestError=!0}throw e})}},{key:"maybeExtractResponseUrlFromRequest",value:function(e){var t=e.responseURL;return t?t:e.getResponseHeader(h.X_REQUEST_URL_HEADER)}},{key:"setHttpHeaders",value:function(e){this.httpHeaders=e}},{key:"setHttpMethod",value:function(e){this.httpMethod=e.toLowerCase()}},{key:"setRequest",value:function(e){this.request=e}},{key:"setTimeout",value:function(e){this.timeout=e}}]),h}(l);h.GET="get",h.POST="post",h.X_REQUEST_URL_HEADER="X-Request-URL",this.senna.RequestScreen=h}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.sennaNamed.dom.dom,a=this.sennaNamed.dom.globalEval,i=this.sennaNamed.dom.globalEvalStyles,r=this.senna.Promise,s=this.senna.globals,o=this.senna.RequestScreen,l=this.senna.Surface,u=this.senna.UA,c=this.senna.Uri,h=this.senna.utils,d=function(o){function d(){e.classCallCheck(this,d);var t=e.possibleConstructorReturn(this,(d.__proto__||Object.getPrototypeOf(d)).call(this));return t.titleSelector="title",t}return e.inherits(d,o),e.createClass(d,[{key:"activate",value:function(){e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"activate",this).call(this),this.releaseVirtualDocument(),this.pendingStyles=null}},{key:"allocateVirtualDocumentForContent",value:function(e){this.virtualDocument||(this.virtualDocument=s.document.createElement("html")),this.copyNodeAttributesFromContent_(e,this.virtualDocument),this.virtualDocument.innerHTML=e}},{key:"appendStyleIntoDocument_",value:function(e){var t=n.match(e,d.selectors.stylesTemporary);if(t&&this.pendingStyles.push(e),e.id){var a=s.document.getElementById(e.id);if(a)return void a.parentNode.insertBefore(e,a.nextSibling)}s.document.head.appendChild(e)}},{key:"assertSameBodyIdInVirtualDocument",value:function(){var e=this.virtualDocument.querySelector("body");s.document.body.id||(s.document.body.id="senna_surface_"+t.getUid()),e&&(e.id=s.document.body.id)}},{key:"copyNodeAttributesFromContent_",value:function(e,t){e=e.replace(/[<]\s*html/gi,"/gi,"/senna>"),t.innerHTML=e;var n=t.querySelector("senna");n&&(h.clearNodeAttributes(t),h.copyNodeAttributes(n,t))}},{key:"disposeInternal",value:function(){this.disposePendingStyles(),e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"disposeInternal",this).call(this)}},{key:"disposePendingStyles",value:function(){this.pendingStyles&&this.pendingStyles.forEach(function(e){return n.exitDocument(e)})}},{key:"evaluateScripts",value:function(t){var n=this,i=this.evaluateTrackedResources_(a.runScriptsInElement,d.selectors.scripts,d.selectors.scriptsTemporary,d.selectors.scriptsPermanent);return i.then(function(){return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"evaluateScripts",n).call(n,t)})}},{key:"evaluateStyles",value:function(t){var n=this;this.pendingStyles=[];var a=this.evaluateTrackedResources_(i.runStylesInElement,d.selectors.styles,d.selectors.stylesTemporary,d.selectors.stylesPermanent,this.appendStyleIntoDocument_.bind(this));return a.then(function(){return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"evaluateStyles",n).call(n,t)})}},{key:"evaluateTrackedResources_",value:function(e,t,a,i,s){var o=this,l=this.virtualQuerySelectorAll_(t),u=this.querySelectorAll_(a),c=this.querySelectorAll_(i);c.forEach(function(e){var t=o.getResourceKey_(e);t&&(d.permanentResourcesInDoc[t]=!0)});var h=n.buildFragment();return l.forEach(function(e){var t=o.getResourceKey_(e);d.permanentResourcesInDoc[t]||h.appendChild(e),t&&n.match(e,i)&&(d.permanentResourcesInDoc[t]=!0)}),new r(function(t){e(h,function(){u.forEach(function(e){return n.exitDocument(e)}),t()},s)})}},{key:"flip",value:function(t){var n=this;return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"flip",this).call(this,t).then(function(){h.clearNodeAttributes(document.documentElement),h.copyNodeAttributes(n.virtualDocument,document.documentElement)})}},{key:"getResourceKey_",value:function(e){return e.id||e.href||e.src||""}},{key:"getSurfaceContent",value:function(e){var t=this.virtualDocument.querySelector("#"+e);if(t){var n=t.querySelector("#"+e+"-"+l.DEFAULT);return n?n.innerHTML:t.innerHTML}}},{key:"getTitleSelector",value:function(){return this.titleSelector}},{key:"load",value:function(t){var n=this;return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"load",this).call(this,t).then(function(e){return n.allocateVirtualDocumentForContent(e),n.resolveTitleFromVirtualDocument(),n.assertSameBodyIdInVirtualDocument(),u.isIe&&n.makeTemporaryStylesHrefsUnique_(),e})}},{key:"makeTemporaryStylesHrefsUnique_",value:function(){var e=this,t=this.virtualQuerySelectorAll_(d.selectors.stylesTemporary);t.forEach(function(t){return e.replaceStyleAndMakeUnique_(t)})}},{key:"replaceStyleAndMakeUnique_",value:function(e){if(e.href){var t=s.document.createElement(e.tagName);e.href=new c(e.href).makeUnique().toString(),h.copyNodeAttributes(e,t),e.parentNode.replaceChild(t,e),e.disabled=!0}}},{key:"virtualQuerySelectorAll_",value:function(e){return Array.prototype.slice.call(this.virtualDocument.querySelectorAll(e))}},{key:"querySelectorAll_",value:function(e){return Array.prototype.slice.call(s.document.querySelectorAll(e))}},{key:"releaseVirtualDocument",value:function(){this.virtualDocument=null}},{key:"resolveTitleFromVirtualDocument",value:function(){var e=this.virtualDocument.querySelector(this.titleSelector);e&&this.setTitle(e.innerHTML.trim())}},{key:"setTitleSelector",value:function(e){this.titleSelector=e}}]),d}(o);d.selectors={scripts:"script[data-senna-track]",scriptsPermanent:'script[data-senna-track="permanent"]',scriptsTemporary:'script[data-senna-track="temporary"]',styles:"style[data-senna-track],link[data-senna-track]",stylesPermanent:'style[data-senna-track="permanent"],link[data-senna-track="permanent"]',stylesTemporary:'style[data-senna-track="temporary"],link[data-senna-track="temporary"]'},d.permanentResourcesInDoc={},this.senna.HtmlScreen=d}.call(this),function(){var e=this.senna.utils,t=this.senna.App,n=this.senna.HtmlScreen,a=this.senna.RequestScreen,i=this.senna.Route,r=this.senna.Screen;this.senna.senna=t,this.sennaNamed.senna=this.sennaNamed.senna||{},this.sennaNamed.senna.utils=e,this.sennaNamed.senna.App=t,this.sennaNamed.senna.HtmlScreen=n,this.sennaNamed.senna.Route=i,this.sennaNamed.senna.RequestScreen=a,this.sennaNamed.senna.Screen=r}.call(this),function(){this.senna.dataAttributes={basePath:"data-senna-base-path",linkSelector:"data-senna-link-selector",loadingCssClass:"data-senna-loading-css-class",senna:"data-senna",dispatch:"data-senna-dispatch",surface:"data-senna-surface",updateScrollPosition:"data-senna-update-scroll-position"}}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.sennaNamed.metal.object,a=this.sennaNamed.metal.Disposable,i=this.senna.dataAttributes,r=this.senna.globals,s=this.senna.App,o=this.senna.HtmlScreen,l=this.senna.Route,u=function(a){function u(){e.classCallCheck(this,u);var t=e.possibleConstructorReturn(this,(u.__proto__||Object.getPrototypeOf(u)).call(this));return t.app=null,t.baseElement=null,t}return e.inherits(u,a),e.createClass(u,[{key:"handle",value:function(){if(!t.isElement(this.baseElement))throw new Error("Senna data attribute handler base element not set or invalid, try setting a valid element that contains a `data-senna` attribute.");if(this.baseElement.hasAttribute(i.senna)){if(this.app)throw new Error("Senna app was already initialized.");this.app=new s,this.maybeAddRoutes_(),this.maybeAddSurfaces_(),this.maybeSetBasePath_(),this.maybeSetLinkSelector_(),this.maybeSetLoadingCssClass_(),this.maybeSetUpdateScrollPosition_(),this.maybeDispatch_()}}},{key:"disposeInternal",value:function(){this.app&&this.app.dispose()}},{key:"getApp",value:function(){return this.app}},{key:"getBaseElement",value:function(){return this.baseElement}},{key:"maybeAddRoutes_",value:function(){var e=this,t='link[rel="senna-route"]';this.querySelectorAllAsArray_(t).forEach(function(t){return e.maybeParseLinkRoute_(t)}),this.app.hasRoutes()||this.app.addRoutes(new l(/.*/,o))}},{key:"maybeAddSurfaces_",value:function(){var e=this,t="["+i.surface+"]";this.querySelectorAllAsArray_(t).forEach(function(t){e.updateElementIdIfSpecialSurface_(t),e.app.addSurfaces(t.id)})}},{key:"maybeDispatch_",value:function(){this.baseElement.hasAttribute(i.dispatch)&&this.app.dispatch()}},{key:"maybeParseLinkRoute_",value:function(e){var t=new l(this.maybeParseLinkRoutePath_(e),this.maybeParseLinkRouteHandler_(e));this.app.addRoutes(t)}},{key:"maybeParseLinkRouteHandler_",value:function(e){var a=e.getAttribute("type");return t.isDefAndNotNull(a)&&(a=n.getObjectByName(a)),a}},{key:"maybeParseLinkRoutePath_",value:function(e){var n=e.getAttribute("href");return t.isDefAndNotNull(n)&&0===n.indexOf("regex:")&&(n=new RegExp(n.substring(6))),n}},{key:"maybeSetBasePath_",value:function(){var e=this.baseElement.getAttribute(i.basePath);t.isDefAndNotNull(e)&&this.app.setBasePath(e)}},{key:"maybeSetLinkSelector_",value:function(){var e=this.baseElement.getAttribute(i.linkSelector);t.isDefAndNotNull(e)&&this.app.setLinkSelector(e)}},{key:"maybeSetLoadingCssClass_",value:function(){var e=this.baseElement.getAttribute(i.loadingCssClass);t.isDefAndNotNull(e)&&this.app.setLoadingCssClass(e)}},{key:"maybeSetUpdateScrollPosition_",value:function(){var e=this.baseElement.getAttribute(i.updateScrollPosition);t.isDefAndNotNull(e)&&("false"===e?this.app.setUpdateScrollPosition(!1):this.app.setUpdateScrollPosition(!0))}},{key:"querySelectorAllAsArray_",value:function(e){return Array.prototype.slice.call(r.document.querySelectorAll(e))}},{key:"updateElementIdIfSpecialSurface_",value:function(e){e.id||e!==r.document.body||(e.id="senna_surface_"+t.getUid())}},{key:"setBaseElement",value:function(e){this.baseElement=e}}]),u}(a);this.senna.AppDataAttributeHandler=u}.call(this),function(){var e=this.senna.globals,t=this.senna.AppDataAttributeHandler,n=new t;e.document.addEventListener("DOMContentLoaded",function(){n.setBaseElement(e.document.body),n.handle()}),this.senna.dataAttributeHandler=n}.call(this)}).call(this); \ No newline at end of file +s&=V(r,n,t,a));return s}var z=this.sennaNamed.metal.isDef,J=this.sennaNamed.metal.isDocument,W=this.sennaNamed.metal.isElement,Y=this.sennaNamed.metal.isObject,G=this.sennaNamed.metal.isString,K=this.sennaNamed.metal.object,$=this.senna.domData,X=this.senna.DomDelegatedEventHandle,Z=this.senna.DomEventHandle,ee={},te={};this.sennaNamed.domNamed=this.sennaNamed.domNamed||{},this.sennaNamed.domNamed.customEvents=te;var ne="__metal_next_target__",ae={blur:!0,error:!0,focus:!0,invalid:!0,load:!0,scroll:!0};this.sennaNamed.domNamed.addClasses=e,this.sennaNamed.domNamed.closest=o,this.sennaNamed.domNamed.append=l,this.sennaNamed.domNamed.buildFragment=u,this.sennaNamed.domNamed.contains=c,this.sennaNamed.domNamed.delegate=h,this.sennaNamed.domNamed.enterDocument=f,this.sennaNamed.domNamed.exitDocument=m,this.sennaNamed.domNamed.hasClass=p,this.sennaNamed.domNamed.isEmpty=_,this.sennaNamed.domNamed.match=k,this.sennaNamed.domNamed.next=N,this.sennaNamed.domNamed.on=C,this.sennaNamed.domNamed.once=S,this.sennaNamed.domNamed.parent=P,this.sennaNamed.domNamed.registerCustomEvent=w,this.sennaNamed.domNamed.removeChildren=A,this.sennaNamed.domNamed.removeClasses=R,this.sennaNamed.domNamed.replace=T,this.sennaNamed.domNamed.supportsEvent=H,this.sennaNamed.domNamed.toElement=j,this.sennaNamed.domNamed.toggleClasses=F,this.sennaNamed.domNamed.triggerEvent=B}.call(this),function(){var e=this.sennaNamed.domNamed;this.senna.dom=e,this.sennaNamed.dom=this.sennaNamed.dom||{},this.sennaNamed.dom.dom=e,Object.keys(this.sennaNamed.domNamed).forEach(function(e){this.sennaNamed.dom[e]=this.sennaNamed.domNamed[e]})}.call(this),function(){var t=this.sennaNamed.dom.delegate,n=this.sennaNamed.dom.on,a=this.sennaNamed.dom.supportsEvent,i=this.sennaNamed.events.EventEmitterProxy,r=function(i){function r(){return e.classCallCheck(this,r),e.possibleConstructorReturn(this,(r.__proto__||Object.getPrototypeOf(r)).apply(this,arguments))}return e.inherits(r,i),e.createClass(r,[{key:"addListener_",value:function(a,i){if(this.originEmitter_.addEventListener){if(this.isDelegateEvent_(a)){var s=a.indexOf(":",9),o=a.substring(9,s),l=a.substring(s+1);return t(this.originEmitter_,o,l,i)}return n(this.originEmitter_,a,i)}return e.get(r.prototype.__proto__||Object.getPrototypeOf(r.prototype),"addListener_",this).call(this,a,i)}},{key:"isDelegateEvent_",value:function(e){return"delegate:"===e.substr(0,9)}},{key:"isSupportedDomEvent_",value:function(e){return!this.originEmitter_||!this.originEmitter_.addEventListener||(this.isDelegateEvent_(e)&&e.indexOf(":",9)!==-1||a(this.originEmitter_,e))}},{key:"shouldProxyEvent_",value:function(t){return e.get(r.prototype.__proto__||Object.getPrototypeOf(r.prototype),"shouldProxyEvent_",this).call(this,t)&&this.isSupportedDomEvent_(t)}}]),r}(i);this.senna.DomEventEmitterProxy=r}.call(this),function(){var t=this.sennaNamed.dom.append,n=this.sennaNamed.metal.string,a=function(){function a(){e.classCallCheck(this,a)}return e.createClass(a,null,[{key:"checkAnimationEventName",value:function(){return void 0===a.animationEventName_&&(a.animationEventName_={animation:a.checkAnimationEventName_("animation"),transition:a.checkAnimationEventName_("transition")}),a.animationEventName_}},{key:"checkAnimationEventName_",value:function(e){for(var t=["Webkit","MS","O",""],i=n.replaceInterval(e,0,1,e.substring(0,1).toUpperCase()),r=[i+"End",i+"End",i+"End",e+"end"],s=0;s0?this.unhandledRejectionId_=0:0===l.UNHANDLED_REJECTION_DELAY&&(this.hadUnhandledRejection_=!1);try{var n=this;e.call(t,function(e){n.resolve_(l.State_.FULFILLED,e)},function(e){n.resolve_(l.State_.REJECTED,e)})}catch(a){this.resolve_(l.State_.REJECTED,a)}};o.UNHANDLED_REJECTION_DELAY=0,o.State_={PENDING:0,BLOCKED:1,FULFILLED:2,REJECTED:3},o.CallbackEntry_=null,o.resolve=function(e){return new o(function(t){t(e)})},o.reject=function(e){return new o(function(t,n){n(e)})},o.race=function(e){return new o(function(t,n){e.length||t(void 0);for(var a,i=0;a=e[i];i++)a.then(t,n)})},o.all=function(e){return new o(function(t,n){var a=e.length,i=[];if(!a)return void t(i);for(var r,o=function(e,n){a--,i[e]=n,0===a&&t(i)},l=function(e){n(e)},u=0;r=e[u];u++)r.then(s(o,u),l)})},o.firstFulfilled=function(e){return new o(function(t,n){var a=e.length,i=[];if(!a)return void t(void 0);for(var r,o=function(e){t(e)},l=function(e,t){a--,i[e]=t,0===a&&n(i)},u=0;r=e[u];u++)r.then(o,s(l,u))})},o.prototype.then=function(e,t,a){return this.addChildPromise_(n(e)?e:null,n(t)?t:null,a)},r.addImplementation(o),o.prototype.thenAlways=function(e,t){var n=function(){try{e.call(t)}catch(n){o.handleRejection_.call(null,n)}};return this.addCallbackEntry_({child:null,onRejected:n,onFulfilled:n}),this},o.prototype.thenCatch=function(e,t){return this.addChildPromise_(null,e,t)},o.prototype["catch"]=o.prototype.thenCatch,o.prototype.cancel=function(e){this.state_===o.State_.PENDING&&i.run(function(){var t=new o.CancellationError(e);t.IS_CANCELLATION_ERROR=!0,this.cancelInternal_(t)},this)},o.prototype.cancelInternal_=function(e){this.state_===o.State_.PENDING&&(this.parent_?this.parent_.cancelChild_(this,e):this.resolve_(o.State_.REJECTED,e))},o.prototype.cancelChild_=function(e,t){if(this.callbackEntries_){for(var n,a=0,i=-1,r=0;n=this.callbackEntries_[r];r++){var s=n.child;if(s&&(a++,s===e&&(i=r),i>=0&&a>1))break}if(i>=0)if(this.state_===o.State_.PENDING&&1===a)this.cancelInternal_(t);else{var l=this.callbackEntries_.splice(i,1)[0];this.executeCallback_(l,o.State_.REJECTED,t)}}},o.prototype.addCallbackEntry_=function(e){this.callbackEntries_&&this.callbackEntries_.length||this.state_!==o.State_.FULFILLED&&this.state_!==o.State_.REJECTED||this.scheduleCallbacks_(),this.callbackEntries_||(this.callbackEntries_=[]),this.callbackEntries_.push(e)},o.prototype.addChildPromise_=function(e,n,a){var i={child:null,onFulfilled:null,onRejected:null};return i.child=new o(function(r,s){i.onFulfilled=e?function(t){try{var n=e.call(a,t);r(n)}catch(i){s(i)}}:r,i.onRejected=n?function(e){try{var i=n.call(a,e);!t(i)&&e.IS_CANCELLATION_ERROR?s(e):r(i)}catch(o){s(o)}}:s}),i.child.parent_=this,this.addCallbackEntry_(i),i.child},o.prototype.unblockAndFulfill_=function(e){if(this.state_!==o.State_.BLOCKED)throw new Error("CancellablePromise is not blocked.");this.state_=o.State_.PENDING,this.resolve_(o.State_.FULFILLED,e)},o.prototype.unblockAndReject_=function(e){if(this.state_!==o.State_.BLOCKED)throw new Error("CancellablePromise is not blocked.");this.state_=o.State_.PENDING,this.resolve_(o.State_.REJECTED,e)},o.prototype.resolve_=function(e,t){if(this.state_===o.State_.PENDING){if(this===t)e=o.State_.REJECTED,t=new TypeError("CancellablePromise cannot resolve to itself");else{if(r.isImplementedBy(t))return t=t,this.state_=o.State_.BLOCKED,void t.then(this.unblockAndFulfill_,this.unblockAndReject_,this);if(a(t))try{var i=t.then;if(n(i))return void this.tryThen_(t,i)}catch(s){e=o.State_.REJECTED,t=s}}this.result_=t,this.state_=e,this.scheduleCallbacks_(),e!==o.State_.REJECTED||t.IS_CANCELLATION_ERROR||o.addUnhandledRejection_(this,t)}},o.prototype.tryThen_=function(e,t){this.state_=o.State_.BLOCKED;var n=this,a=!1,i=function(e){a||(a=!0,n.unblockAndFulfill_(e))},r=function(e){a||(a=!0,n.unblockAndReject_(e))};try{t.call(e,i,r)}catch(s){r(s)}},o.prototype.scheduleCallbacks_=function(){this.executing_||(this.executing_=!0,i.run(this.executeCallbacks_,this))},o.prototype.executeCallbacks_=function(){for(;this.callbackEntries_&&this.callbackEntries_.length;){var e=this.callbackEntries_;this.callbackEntries_=[];for(var t=0;t0)for(e=this;e&&e.unhandledRejectionId_;e=e.parent_)clearTimeout(e.unhandledRejectionId_),e.unhandledRejectionId_=0;else if(0===o.UNHANDLED_REJECTION_DELAY)for(e=this;e&&e.hadUnhandledRejection_;e=e.parent_)e.hadUnhandledRejection_=!1},o.addUnhandledRejection_=function(e,t){o.UNHANDLED_REJECTION_DELAY>0?e.unhandledRejectionId_=setTimeout(function(){o.handleRejection_.call(null,t)},o.UNHANDLED_REJECTION_DELAY):0===o.UNHANDLED_REJECTION_DELAY&&(e.hadUnhandledRejection_=!0,i.run(function(){e.hadUnhandledRejection_&&o.handleRejection_.call(null,t)}))},o.handleRejection_=i.throwException,o.setUnhandledRejectionHandler=function(e){o.handleRejection_=e},o.CancellationError=function(t){function n(t){e.classCallCheck(this,n);var a=e.possibleConstructorReturn(this,(n.__proto__||Object.getPrototypeOf(n)).call(this,t));return t&&(a.message=t),a}return e.inherits(n,t),n}(Error),o.CancellationError.prototype.name="cancel",this.sennaNamed.Promise=this.sennaNamed.Promise||{},this.sennaNamed.Promise.CancellablePromise=o,this.senna.Promise=o}.call(this),function(){function e(e){return{match:e[0],prefix:e[1],name:e[2],paramPattern:e[3],unnamedPattern:e[4],modifier:e[5]}}function t(e){for(var t="",r=0;r-1)}}]),r}();this.senna.Route=r}.call(this),function(){var t=this.sennaNamed.metal.Disposable,n=function(t){function n(){e.classCallCheck(this,n);var t=e.possibleConstructorReturn(this,(n.__proto__||Object.getPrototypeOf(n)).call(this));return t.cache=null,t.cacheable=!1,t}return e.inherits(n,t),e.createClass(n,[{key:"addCache",value:function(e){return this.cacheable&&(this.cache=e),this}},{key:"clearCache",value:function(){return this.cache=null,this}},{key:"disposeInternal",value:function(){this.clearCache()}},{key:"getCache",value:function(){return this.cache}},{key:"isCacheable",value:function(){return this.cacheable}},{key:"setCacheable",value:function(e){e||this.clearCache(),this.cacheable=e}}]),n}(t);this.senna.Cacheable=n}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.sennaNamed.dom.globalEval,a=this.senna.Cacheable,i=this.senna.Promise,r=function(a){function r(){e.classCallCheck(this,r);var n=e.possibleConstructorReturn(this,(r.__proto__||Object.getPrototypeOf(r)).call(this));return n.id=n.makeId_(t.getUid()),n.title=null,n}return e.inherits(r,a),e.createClass(r,[{key:"activate",value:function(){}},{key:"beforeDeactivate",value:function(){}},{key:"beforeUpdateHistoryPath",value:function(e){return e}},{key:"beforeUpdateHistoryState",value:function(e){return e}},{key:"deactivate",value:function(){}},{key:"disposeInternal",value:function(){e.get(r.prototype.__proto__||Object.getPrototypeOf(r.prototype),"disposeInternal",this).call(this)}},{key:"evaluateScripts",value:function(e){return Object.keys(e).forEach(function(t){e[t].activeChild&&n.runScriptsInElement(e[t].activeChild)}),i.resolve()}},{key:"evaluateStyles",value:function(){return i.resolve()}},{key:"flip",value:function(e){var t=this,n=[];return Object.keys(e).forEach(function(a){var i=e[a],r=i.show(t.id);n.push(r)}),i.all(n)}},{key:"getId",value:function(){return this.id}},{key:"getSurfaceContent",value:function(){}},{key:"getTitle",value:function(){return this.title}},{key:"load",value:function(){return i.resolve()}},{key:"makeId_",value:function(e){return"screen_"+e}},{key:"setId",value:function(e){this.id=e}},{key:"setTitle",value:function(e){this.title=e}},{key:"toString",value:function(){return this.id}}]),r}(a);r.isImplementedBy=function(e){return e instanceof r},this.senna.Screen=r}.call(this),function(){var t=this.senna.globals,n=this.sennaNamed.metal.core,a=this.sennaNamed.metal.Disposable,i=this.senna.dom,r=this.senna.Promise,s=function(a){function s(t){e.classCallCheck(this,s);var n=e.possibleConstructorReturn(this,(s.__proto__||Object.getPrototypeOf(s)).call(this));if(!t)throw new Error("Surface element id not specified. A surface element requires a valid id.");return n.activeChild=null,n.defaultChild=null,n.element=null,n.id=t,n.transitionFn=null,n.defaultChild=n.getChild(s.DEFAULT),n.maybeWrapContentAsDefault_(),n.activeChild=n.defaultChild,n}return e.inherits(s,a),e.createClass(s,[{key:"addContent",value:function(e,t){var a=this.defaultChild;n.isDefAndNotNull(t)&&(a=this.getChild(e),a?i.removeChildren(a):(a=this.createChild(e),this.transition(a,null)),i.append(a,t));var r=this.getElement();return r&&a&&i.append(r,a),a}},{key:"createChild",value:function(e){var n=t.document.createElement("div");return n.setAttribute("id",this.makeId_(e)),n}},{key:"getChild",value:function(e){return t.document.getElementById(this.makeId_(e))}},{key:"getElement",value:function(){return this.element?this.element:(this.element=t.document.getElementById(this.id),this.element)}},{key:"getId",value:function(){return this.id}},{key:"getTransitionFn",value:function(){return this.transitionFn}},{key:"makeId_",value:function(e){return this.id+"-"+e}},{key:"maybeWrapContentAsDefault_",value:function(){var e=this.getElement();if(e&&!this.defaultChild){for(var n=t.document.createDocumentFragment();e.firstChild;)n.appendChild(e.firstChild);this.defaultChild=this.addContent(s.DEFAULT,n),this.transition(null,this.defaultChild)}}},{key:"setId",value:function(e){this.id=e}},{key:"setTransitionFn",value:function(e){this.transitionFn=e}},{key:"show",value:function(e){var t=this.activeChild,n=this.getChild(e);return n||(n=this.defaultChild),this.activeChild=n,this.transition(t,n).thenAlways(function(){t&&t!==n&&i.exitDocument(t)})}},{key:"remove",value:function(e){var t=this.getChild(e);t&&i.exitDocument(t)}},{key:"toString",value:function(){return this.id}},{key:"transition",value:function(e,t){var n=this.transitionFn||s.defaultTransition;return r.resolve(n.call(this,e,t))}}]),s}(a);s.DEFAULT="default",s.defaultTransition=function(e,t){e&&(e.style.display="none",e.classList.remove("flipped")),t&&(t.style.display="block",t.classList.add("flipped"))},this.senna.Surface=s}.call(this),function(){var t=this.sennaNamed.metal.array,n=this.sennaNamed.metal.async,a=this.sennaNamed.metal.core,i=this.senna.debounce,r=this.senna.dom,s=this.senna.Promise,o=this.sennaNamed.events.EventEmitter,l=this.sennaNamed.events.EventHandler,u=this.senna.utils,c=this.senna.globals,h=this.senna.Route,d=this.senna.Screen,f=this.senna.Surface,m=this.senna.Uri,v=function(o){function v(){e.classCallCheck(this,v);var t=e.possibleConstructorReturn(this,(v.__proto__||Object.getPrototypeOf(v)).call(this));return t.activeScreen=null,t.activePath=null,t.allowPreventNavigate=!0,t.basePath="",t.captureScrollPositionFromScrollEvent=!0,t.defaultTitle=c.document.title,t.formSelector='form[enctype="multipart/form-data"]:not([data-senna-off])',t.linkSelector="a:not([data-senna-off])",t.loadingCssClass="senna-loading",t.nativeScrollRestorationSupported="scrollRestoration"in c.window.history,t.isNavigationPending=!1,t.pendingNavigate=null,t.popstateScrollLeft=0,t.popstateScrollTop=0,t.redirectPath=null,t.routes=[],t.screens={},t.skipLoadPopstate=!1,t.surfaces={},t.updateScrollPosition=!0,t.appEventHandlers_=new l,t.appEventHandlers_.add(r.on(c.window,"scroll",i(t.onScroll_.bind(t),100)),r.on(c.window,"load",t.onLoad_.bind(t)),r.on(c.window,"popstate",t.onPopstate_.bind(t))),t.on("startNavigate",t.onStartNavigate_),t.on("beforeNavigate",t.onBeforeNavigate_),t.on("beforeNavigate",t.onBeforeNavigateDefault_,!0),t.setLinkSelector(t.linkSelector),t.setFormSelector(t.formSelector),t}return e.inherits(v,o),e.createClass(v,[{key:"addRoutes",value:function(e){var t=this;return Array.isArray(e)||(e=[e]),e.forEach(function(e){e instanceof h||(e=new h(e.path,e.handler)),t.routes.push(e)}),this}},{key:"addSurfaces",value:function(e){var t=this;return Array.isArray(e)||(e=[e]),e.forEach(function(e){a.isString(e)&&(e=new f(e)),t.surfaces[e.getId()]=e}),this}},{key:"canNavigate",value:function(e){var t=u.getUrlPath(e),n=new m(e);return!!this.isLinkSameOrigin_(n.getHostname())&&(!!this.isSameBasePath_(t)&&!!this.findRoute(t))}},{key:"clearScreensCache",value:function(){var e=this;Object.keys(this.screens).forEach(function(t){t===e.activePath?e.activeScreen.clearCache():e.removeScreen(t)})}},{key:"createScreenInstance",value:function(e,t){if(!this.pendingNavigate&&e===this.activePath)return this.activeScreen;var n=this.screens[e];if(!n){var a=t.getHandler();n=a===d||d.isImplementedBy(a.prototype)?new a:a(t)||new d}return n}},{key:"disposeInternal",value:function(){this.activeScreen&&this.removeScreen(this.activePath),this.clearScreensCache(),this.formEventHandler_.removeListener(),this.linkEventHandler_.removeListener(),this.appEventHandlers_.removeAllListeners(),e.get(v.prototype.__proto__||Object.getPrototypeOf(v.prototype),"disposeInternal",this).call(this)}},{key:"dispatch",value:function(){return this.navigate(u.getCurrentBrowserPath(),!0)}},{key:"doNavigate_",value:function(e,t){var n=this;if(this.activeScreen&&this.activeScreen.beforeDeactivate())return this.pendingNavigate=s.reject(new s.CancellationError("Cancelled by active screen")),this.pendingNavigate;var a=this.findRoute(e);if(!a)return this.pendingNavigate=s.reject(new s.CancellationError("No route for "+e)),this.pendingNavigate;this.stopPendingNavigate_(),this.isNavigationPending=!0;var i=this.createScreenInstance(e,a);return i.load(e).then(function(){n.activeScreen&&n.activeScreen.deactivate(),n.prepareNavigateHistory_(e,i,t),n.prepareNavigateSurfaces_(i,n.surfaces,n.extractParams(a,e))}).then(function(){return i.evaluateStyles(n.surfaces)}).then(function(){return i.flip(n.surfaces)}).then(function(){return i.evaluateScripts(n.surfaces)}).then(function(){return n.syncScrollPositionSyncThenAsync_()}).then(function(){return n.finalizeNavigate_(e,i)})["catch"](function(t){throw n.isNavigationPending=!1,n.handleNavigateError_(e,i,t),t})}},{key:"extractParams",value:function(e,t){return e.extractParams(this.getRoutePath(t))}},{key:"finalizeNavigate_",value:function(e,t){t.activate(),this.activeScreen&&!this.activeScreen.isCacheable()&&this.activeScreen!==t&&this.removeScreen(this.activePath),this.activePath=e,this.activeScreen=t,this.screens[e]=t,this.isNavigationPending=!1,this.pendingNavigate=null,c.capturedFormElement=null}},{key:"findRoute",value:function(e){if(e.lastIndexOf("#")>-1&&u.isCurrentBrowserPath(e))return null;e=this.getRoutePath(e);for(var t=0;t0}},{key:"isLinkSameOrigin_",value:function(e){return e===c.window.location.hostname}},{key:"isSameBasePath_",value:function(e){return 0===e.indexOf(this.basePath)}},{key:"lockHistoryScrollPosition_",value:function(){var e=c.window.history.state;if(e){var t=!1,a=function i(){c.document.removeEventListener("scroll",i,!1),t||(c.window.scrollTo(e.scrollLeft,e.scrollTop),t=!0)};n.nextTick(a),c.document.addEventListener("scroll",a,!1)}}},{key:"maybeDisableNativeScrollRestoration",value:function(){this.nativeScrollRestorationSupported&&(this.nativeScrollRestoration_=c.window.history.scrollRestoration,c.window.history.scrollRestoration="manual")}},{key:"maybeNavigate_",value:function(e,t){if(this.canNavigate(e)){c.capturedFormElement=t.capturedFormElement;var n=!1;try{this.navigate(u.getUrlPath(e))}catch(a){n=!0}n||t.preventDefault()}}},{key:"maybeRepositionScrollToHashedAnchor",value:function(){var e=c.window.location.hash;if(e){var t=c.document.getElementById(e.substring(1));t&&c.window.scrollTo(t.offsetLeft,t.offsetTop)}}},{key:"maybeRestoreNativeScrollRestoration",value:function(){this.nativeScrollRestorationSupported&&this.nativeScrollRestoration_&&(c.window.history.scrollRestoration=this.nativeScrollRestoration_)}},{key:"navigate",value:function(e,t){if(!u.isHtml5HistorySupported())throw new Error("HTML5 History is not supported. Senna will not intercept navigation.");return e===this.activePath&&(t=!0),this.emit("beforeNavigate",{path:e,replaceHistory:!!t}),this.pendingNavigate}},{key:"onBeforeNavigate_",value:function(e){c.capturedFormElement&&(e.form=c.capturedFormElement)}},{key:"onBeforeNavigateDefault_",value:function(e){this.pendingNavigate&&this.pendingNavigate.path===e.path||this.emit("startNavigate",{form:e.form,path:e.path,replaceHistory:e.replaceHistory})}},{key:"onDocClickDelegate_",value:function(e){e.altKey||e.ctrlKey||e.metaKey||e.shiftKey||e.button||this.maybeNavigate_(e.delegateTarget.href,e)}},{key:"onDocSubmitDelegate_",value:function(e){var t=e.delegateTarget;"get"!==t.method&&(e.capturedFormElement=t,this.maybeNavigate_(t.action,e))}},{key:"onLoad_",value:function(){var e=this;this.skipLoadPopstate=!0,setTimeout(function(){e.skipLoadPopstate=!1},0),this.maybeRepositionScrollToHashedAnchor()}},{key:"onPopstate_",value:function(e){if(!this.skipLoadPopstate){var t=e.state;return t?void(t.senna&&(this.popstateScrollTop=t.scrollTop,this.popstateScrollLeft=t.scrollLeft,this.nativeScrollRestorationSupported||this.lockHistoryScrollPosition_(),this.navigate(t.path,!0))):void(c.window.location.hash?(this.redirectPath&&!u.isCurrentBrowserPath(this.redirectPath)&&this.reloadPage(),this.maybeRepositionScrollToHashedAnchor()):this.reloadPage())}}},{key:"onScroll_",value:function(){this.captureScrollPositionFromScrollEvent&&this.saveHistoryCurrentPageScrollPosition_()}},{key:"onStartNavigate_",value:function(e){var t=this;this.maybeDisableNativeScrollRestoration(),this.captureScrollPositionFromScrollEvent=!1,r.addClasses(c.document.documentElement,this.loadingCssClass);var n={form:e.form,path:e.path};this.pendingNavigate=this.doNavigate_(e.path,e.replaceHistory)["catch"](function(e){throw n.error=e,e}).thenAlways(function(){t.pendingNavigate||(r.removeClasses(c.document.documentElement,t.loadingCssClass),t.maybeRestoreNativeScrollRestoration(),t.captureScrollPositionFromScrollEvent=!0),t.emit("endNavigate",n)}),this.pendingNavigate.path=e.path}},{key:"prefetch",value:function(e){var t=this,n=this.findRoute(e);if(!n)return s.reject(new s.CancellationError("No route for "+e));var a=this.createScreenInstance(e,n);return a.load(e).then(function(){return t.screens[e]=a})["catch"](function(n){throw t.handleNavigateError_(e,a,n),n})}},{key:"prepareNavigateHistory_",value:function(e,t,n){var i=t.getTitle();a.isString(i)||(i=this.getDefaultTitle());var r=t.beforeUpdateHistoryPath(e),s={form:a.isDefAndNotNull(c.capturedFormElement),redirectPath:r,path:e,senna:!0,scrollTop:0,scrollLeft:0};n&&(s.scrollTop=this.popstateScrollTop,s.scrollLeft=this.popstateScrollLeft),this.updateHistory_(i,r,t.beforeUpdateHistoryState(s),n),this.redirectPath=r}},{key:"prepareNavigateSurfaces_",value:function(e,t,n){Object.keys(t).forEach(function(a){var i=e.getSurfaceContent(a,n);t[a].addContent(e.getId(),i)})}},{key:"reloadPage",value:function(){c.window.location.reload()}},{key:"removeRoute",value:function(e){return t.remove(this.routes,e)}},{key:"removeScreen",value:function(e){var t=this,n=this.screens[e];n&&(Object.keys(this.surfaces).forEach(function(e){return t.surfaces[e].remove(n.getId())}),n.dispose(),delete this.screens[e])}},{key:"saveHistoryCurrentPageScrollPosition_",value:function(){var e=c.window.history.state;e&&e.senna&&(e.scrollTop=c.window.pageYOffset,e.scrollLeft=c.window.pageXOffset,c.window.history.replaceState(e,null,null))}},{key:"setAllowPreventNavigate",value:function(e){this.allowPreventNavigate=e}},{key:"setBasePath",value:function(e){this.basePath=e}},{key:"setDefaultTitle",value:function(e){this.defaultTitle=e}},{key:"setFormSelector",value:function(e){this.formSelector=e,this.formEventHandler_&&this.formEventHandler_.removeListener(),this.formEventHandler_=r.delegate(document,"submit",this.formSelector,this.onDocSubmitDelegate_.bind(this),this.allowPreventNavigate)}},{key:"setLinkSelector",value:function(e){this.linkSelector=e,this.linkEventHandler_&&this.linkEventHandler_.removeListener(),this.linkEventHandler_=r.delegate(document,"click",this.linkSelector,this.onDocClickDelegate_.bind(this),this.allowPreventNavigate)}},{key:"setLoadingCssClass",value:function(e){this.loadingCssClass=e}},{key:"setUpdateScrollPosition",value:function(e){this.updateScrollPosition=e}},{key:"stopPendingNavigate_",value:function(){this.pendingNavigate&&(this.pendingNavigate.cancel("Cancel pending navigation"),this.pendingNavigate=null)}},{key:"syncScrollPositionSyncThenAsync_",value:function(){var e=this,t=c.window.history.state;if(t){var a=t.scrollTop,i=t.scrollLeft,r=function(){e.updateScrollPosition&&c.window.scrollTo(i,a)};return new s(function(e){return r()&n.nextTick(function(){return r()&e()})})}}},{key:"updateHistory_",value:function(e,t,n,a){a?c.window.history.replaceState(n,e,t):c.window.history.pushState(n,e,t),c.document.title=e; +}}]),v}(o);this.senna.App=v}.call(this),function(){var t=this.sennaNamed.metal.isDef,n=this.sennaNamed.metal.isDefAndNotNull,a=this.senna.Uri,i=this.sennaNamed.Promise.CancellablePromise,r=function(){function r(){e.classCallCheck(this,r)}return e.createClass(r,null,[{key:"parseResponseHeaders",value:function(e){var t=[];if(!e)return t;for(var n=e.split("\r\n"),a=0;a0){var r=n[a].substring(0,i),s=n[a].substring(i+2);t.push({name:r,value:s})}}return t}},{key:"request",value:function s(e,r,o,l,u,c,h,d){e=e||"",r=r||"GET";var s=new XMLHttpRequest,f=new i(function(e,t){s.onload=function(){return s.aborted?void s.onerror():void e(s)},s.onerror=function(){var e=new Error("Request error");e.request=s,t(e)}}).thenCatch(function(e){throw s.abort(),e}).thenAlways(function(){clearTimeout(m)});if(u&&(e=new a(e).addParametersFromMultiMap(u).toString()),s.open(r,e,!h),d&&(s.withCredentials=!0),l&&l.names().forEach(function(e){s.setRequestHeader(e,l.getAll(e).join(", "))}),s.send(t(o)?o:null),n(c))var m=setTimeout(function(){f.cancel("Request timeout")},c);return f}}]),r}();this.senna.Ajax=r}.call(this),function(){var t=function n(){e.classCallCheck(this,n)};t.INVALID_STATUS="Invalid status code",t.REQUEST_ERROR="Request error",t.REQUEST_TIMEOUT="Request timeout",this.senna.errors=t}.call(this),function(){var t=function(){function t(){e.classCallCheck(this,t)}return e.createClass(t,null,[{key:"getNativeUserAgent",value:function(){var e=t.globals.window.navigator;if(e){var n=e.userAgent;if(n)return n}return""}},{key:"getNativePlatform",value:function(){var e=t.globals.window.navigator;if(e){var n=e.platform;if(n)return n}return""}},{key:"matchPlatform",value:function(e){return t.platform.indexOf(e)!==-1}},{key:"matchUserAgent",value:function(e){return t.userAgent.indexOf(e)!==-1}},{key:"testUserAgent",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"",n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"";t.userAgent=e,t.platform=n,t.isMac=t.matchPlatform("Mac"),t.isWin=t.matchPlatform("Win"),t.isOpera=t.matchUserAgent("Opera")||t.matchUserAgent("OPR"),t.isIe=t.matchUserAgent("Trident")||t.matchUserAgent("MSIE"),t.isEdge=t.matchUserAgent("Edge"),t.isIeOrEdge=t.isIe||t.isEdge,t.isChrome=(t.matchUserAgent("Chrome")||t.matchUserAgent("CriOS"))&&!t.isOpera&&!t.isEdge,t.isSafari=t.matchUserAgent("Safari")&&!(t.isChrome||t.isOpera||t.isEdge),t.isFirefox=t.matchUserAgent("Firefox")}}]),t}();t.globals={window:window},t.testUserAgent(t.getNativeUserAgent(),t.getNativePlatform()),this.senna.UA=t}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.senna.Ajax,a=this.sennaNamed.structs.MultiMap,i=this.senna.Promise,r=this.senna.errors,s=this.senna.utils,o=this.senna.globals,l=this.senna.Screen,u=this.senna.Uri,c=this.senna.UA,h=function(l){function h(){e.classCallCheck(this,h);var t=e.possibleConstructorReturn(this,(h.__proto__||Object.getPrototypeOf(h)).call(this));return t.cacheable=!0,t.httpHeaders={"X-PJAX":"true","X-Requested-With":"XMLHttpRequest"},t.httpMethod=h.GET,t.request=null,t.timeout=3e4,t}return e.inherits(h,l),e.createClass(h,[{key:"assertValidResponseStatusCode",value:function(e){if(!this.isValidResponseStatusCode(e)){var t=new Error(r.INVALID_STATUS);throw t.invalidStatus=!0,t}}},{key:"beforeUpdateHistoryPath",value:function(e){var t=this.getRequestPath();return t&&t!==e?t:e}},{key:"beforeUpdateHistoryState",value:function(e){return e.senna&&e.form&&e.redirectPath===e.path?null:e}},{key:"formatLoadPath",value:function(e){var t=new u(e);return t.setHostname(o.window.location.hostname),t.setProtocol(o.window.location.protocol),o.window.location.port&&t.setPort(o.window.location.port),c.isIeOrEdge&&this.httpMethod===h.GET?t.makeUnique().toString():t.toString()}},{key:"getHttpHeaders",value:function(){return this.httpHeaders}},{key:"getHttpMethod",value:function(){return this.httpMethod}},{key:"getRequestPath",value:function(){var e=this.getRequest();if(e){var t=e.requestPath,n=this.maybeExtractResponseUrlFromRequest(e);return n&&(t=n),c.isIeOrEdge&&this.httpMethod===h.GET&&(t=new u(t).removeUnique().toString()),s.getUrlPath(t)}return null}},{key:"getRequest",value:function(){return this.request}},{key:"getTimeout",value:function(){return this.timeout}},{key:"isValidResponseStatusCode",value:function(e){return e>=200&&e<=399}},{key:"load",value:function(e){var s=this,l=this.getCache();if(t.isDefAndNotNull(l))return i.resolve(l);var u=null,d=this.httpMethod,f=new a;Object.keys(this.httpHeaders).forEach(function(e){return f.add(e,s.httpHeaders[e])}),o.capturedFormElement&&(u=new FormData(o.capturedFormElement),d=h.POST,c.isIeOrEdge&&f.add("If-None-Match",'"0"'));var m=this.formatLoadPath(e);return n.request(m,d,u,f,null,this.timeout).then(function(e){return s.setRequest(e),s.assertValidResponseStatusCode(e.status),d===h.GET&&s.isCacheable()&&s.addCache(e.responseText),e.requestPath=m,e.responseText})["catch"](function(e){switch(e.message){case r.REQUEST_TIMEOUT:e.timeout=!0;break;case r.REQUEST_ERROR:e.requestError=!0}throw e})}},{key:"maybeExtractResponseUrlFromRequest",value:function(e){var t=e.responseURL;return t?t:e.getResponseHeader(h.X_REQUEST_URL_HEADER)}},{key:"setHttpHeaders",value:function(e){this.httpHeaders=e}},{key:"setHttpMethod",value:function(e){this.httpMethod=e.toLowerCase()}},{key:"setRequest",value:function(e){this.request=e}},{key:"setTimeout",value:function(e){this.timeout=e}}]),h}(l);h.GET="get",h.POST="post",h.X_REQUEST_URL_HEADER="X-Request-URL",this.senna.RequestScreen=h}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.sennaNamed.dom.dom,a=this.sennaNamed.dom.globalEval,i=this.sennaNamed.dom.globalEvalStyles,r=this.senna.Promise,s=this.senna.globals,o=this.senna.RequestScreen,l=this.senna.Surface,u=this.senna.UA,c=this.senna.Uri,h=this.senna.utils,d=function(o){function d(){e.classCallCheck(this,d);var t=e.possibleConstructorReturn(this,(d.__proto__||Object.getPrototypeOf(d)).call(this));return t.titleSelector="title",t}return e.inherits(d,o),e.createClass(d,[{key:"activate",value:function(){e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"activate",this).call(this),this.releaseVirtualDocument(),this.pendingStyles=null}},{key:"allocateVirtualDocumentForContent",value:function(e){this.virtualDocument||(this.virtualDocument=s.document.createElement("html")),this.copyNodeAttributesFromContent_(e,this.virtualDocument),this.virtualDocument.innerHTML=e}},{key:"appendStyleIntoDocument_",value:function(e){var t=n.match(e,d.selectors.stylesTemporary);if(t&&this.pendingStyles.push(e),e.id){var a=s.document.getElementById(e.id);if(a)return void a.parentNode.insertBefore(e,a.nextSibling)}s.document.head.appendChild(e)}},{key:"assertSameBodyIdInVirtualDocument",value:function(){var e=this.virtualDocument.querySelector("body");s.document.body.id||(s.document.body.id="senna_surface_"+t.getUid()),e&&(e.id=s.document.body.id)}},{key:"copyNodeAttributesFromContent_",value:function(e,t){e=e.replace(/[<]\s*html/gi,"/gi,"/senna>"),t.innerHTML=e;var n=t.querySelector("senna");n&&(h.clearNodeAttributes(t),h.copyNodeAttributes(n,t))}},{key:"disposeInternal",value:function(){this.disposePendingStyles(),e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"disposeInternal",this).call(this)}},{key:"disposePendingStyles",value:function(){this.pendingStyles&&this.pendingStyles.forEach(function(e){return n.exitDocument(e)})}},{key:"evaluateScripts",value:function(t){var n=this,i=this.evaluateTrackedResources_(a.runScriptsInElement,d.selectors.scripts,d.selectors.scriptsTemporary,d.selectors.scriptsPermanent);return i.then(function(){return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"evaluateScripts",n).call(n,t)})}},{key:"evaluateStyles",value:function(t){var n=this;this.pendingStyles=[];var a=this.evaluateTrackedResources_(i.runStylesInElement,d.selectors.styles,d.selectors.stylesTemporary,d.selectors.stylesPermanent,this.appendStyleIntoDocument_.bind(this));return a.then(function(){return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"evaluateStyles",n).call(n,t)})}},{key:"evaluateTrackedResources_",value:function(e,t,a,i,s){var o=this,l=this.virtualQuerySelectorAll_(t),u=this.querySelectorAll_(a),c=this.querySelectorAll_(i);c.forEach(function(e){var t=o.getResourceKey_(e);t&&(d.permanentResourcesInDoc[t]=!0)});var h=n.buildFragment();return l.forEach(function(e){var t=o.getResourceKey_(e);d.permanentResourcesInDoc[t]||h.appendChild(e),t&&n.match(e,i)&&(d.permanentResourcesInDoc[t]=!0)}),new r(function(t){e(h,function(){u.forEach(function(e){return n.exitDocument(e)}),t()},s)})}},{key:"flip",value:function(t){var n=this;return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"flip",this).call(this,t).then(function(){h.clearNodeAttributes(document.documentElement),h.copyNodeAttributes(n.virtualDocument,document.documentElement)})}},{key:"getResourceKey_",value:function(e){return e.id||e.href||e.src||""}},{key:"getSurfaceContent",value:function(e){var t=this.virtualDocument.querySelector("#"+e);if(t){var n=t.querySelector("#"+e+"-"+l.DEFAULT);return n?n.innerHTML:t.innerHTML}}},{key:"getTitleSelector",value:function(){return this.titleSelector}},{key:"load",value:function(t){var n=this;return e.get(d.prototype.__proto__||Object.getPrototypeOf(d.prototype),"load",this).call(this,t).then(function(e){return n.allocateVirtualDocumentForContent(e),n.resolveTitleFromVirtualDocument(),n.assertSameBodyIdInVirtualDocument(),u.isIe&&n.makeTemporaryStylesHrefsUnique_(),e})}},{key:"makeTemporaryStylesHrefsUnique_",value:function(){var e=this,t=this.virtualQuerySelectorAll_(d.selectors.stylesTemporary);t.forEach(function(t){return e.replaceStyleAndMakeUnique_(t)})}},{key:"replaceStyleAndMakeUnique_",value:function(e){if(e.href){var t=s.document.createElement(e.tagName);e.href=new c(e.href).makeUnique().toString(),h.copyNodeAttributes(e,t),e.parentNode.replaceChild(t,e),e.disabled=!0}}},{key:"virtualQuerySelectorAll_",value:function(e){return Array.prototype.slice.call(this.virtualDocument.querySelectorAll(e))}},{key:"querySelectorAll_",value:function(e){return Array.prototype.slice.call(s.document.querySelectorAll(e))}},{key:"releaseVirtualDocument",value:function(){this.virtualDocument=null}},{key:"resolveTitleFromVirtualDocument",value:function(){var e=this.virtualDocument.querySelector(this.titleSelector);e&&this.setTitle(e.innerHTML.trim())}},{key:"setTitleSelector",value:function(e){this.titleSelector=e}}]),d}(o);d.selectors={scripts:"script[data-senna-track]",scriptsPermanent:'script[data-senna-track="permanent"]',scriptsTemporary:'script[data-senna-track="temporary"]',styles:"style[data-senna-track],link[data-senna-track]",stylesPermanent:'style[data-senna-track="permanent"],link[data-senna-track="permanent"]',stylesTemporary:'style[data-senna-track="temporary"],link[data-senna-track="temporary"]'},d.permanentResourcesInDoc={},this.senna.HtmlScreen=d}.call(this),function(){var e=this.senna.utils,t=this.senna.App,n=this.senna.HtmlScreen,a=this.senna.RequestScreen,i=this.senna.Route,r=this.senna.Screen;this.senna.senna=t,this.sennaNamed.senna=this.sennaNamed.senna||{},this.sennaNamed.senna.utils=e,this.sennaNamed.senna.App=t,this.sennaNamed.senna.HtmlScreen=n,this.sennaNamed.senna.Route=i,this.sennaNamed.senna.RequestScreen=a,this.sennaNamed.senna.Screen=r}.call(this),function(){this.senna.dataAttributes={basePath:"data-senna-base-path",linkSelector:"data-senna-link-selector",loadingCssClass:"data-senna-loading-css-class",senna:"data-senna",dispatch:"data-senna-dispatch",surface:"data-senna-surface",updateScrollPosition:"data-senna-update-scroll-position"}}.call(this),function(){var t=this.sennaNamed.metal.core,n=this.sennaNamed.metal.object,a=this.sennaNamed.metal.Disposable,i=this.senna.dataAttributes,r=this.senna.globals,s=this.senna.App,o=this.senna.HtmlScreen,l=this.senna.Route,u=function(a){function u(){e.classCallCheck(this,u);var t=e.possibleConstructorReturn(this,(u.__proto__||Object.getPrototypeOf(u)).call(this));return t.app=null,t.baseElement=null,t}return e.inherits(u,a),e.createClass(u,[{key:"handle",value:function(){if(!t.isElement(this.baseElement))throw new Error("Senna data attribute handler base element not set or invalid, try setting a valid element that contains a `data-senna` attribute.");if(this.baseElement.hasAttribute(i.senna)){if(this.app)throw new Error("Senna app was already initialized.");this.app=new s,this.maybeAddRoutes_(),this.maybeAddSurfaces_(),this.maybeSetBasePath_(),this.maybeSetLinkSelector_(),this.maybeSetLoadingCssClass_(),this.maybeSetUpdateScrollPosition_(),this.maybeDispatch_()}}},{key:"disposeInternal",value:function(){this.app&&this.app.dispose()}},{key:"getApp",value:function(){return this.app}},{key:"getBaseElement",value:function(){return this.baseElement}},{key:"maybeAddRoutes_",value:function(){var e=this,t='link[rel="senna-route"]';this.querySelectorAllAsArray_(t).forEach(function(t){return e.maybeParseLinkRoute_(t)}),this.app.hasRoutes()||this.app.addRoutes(new l(/.*/,o))}},{key:"maybeAddSurfaces_",value:function(){var e=this,t="["+i.surface+"]";this.querySelectorAllAsArray_(t).forEach(function(t){e.updateElementIdIfSpecialSurface_(t),e.app.addSurfaces(t.id)})}},{key:"maybeDispatch_",value:function(){this.baseElement.hasAttribute(i.dispatch)&&this.app.dispatch()}},{key:"maybeParseLinkRoute_",value:function(e){var t=new l(this.maybeParseLinkRoutePath_(e),this.maybeParseLinkRouteHandler_(e));this.app.addRoutes(t)}},{key:"maybeParseLinkRouteHandler_",value:function(e){var a=e.getAttribute("type");return t.isDefAndNotNull(a)&&(a=n.getObjectByName(a)),a}},{key:"maybeParseLinkRoutePath_",value:function(e){var n=e.getAttribute("href");return t.isDefAndNotNull(n)&&0===n.indexOf("regex:")&&(n=new RegExp(n.substring(6))),n}},{key:"maybeSetBasePath_",value:function(){var e=this.baseElement.getAttribute(i.basePath);t.isDefAndNotNull(e)&&this.app.setBasePath(e)}},{key:"maybeSetLinkSelector_",value:function(){var e=this.baseElement.getAttribute(i.linkSelector);t.isDefAndNotNull(e)&&this.app.setLinkSelector(e)}},{key:"maybeSetLoadingCssClass_",value:function(){var e=this.baseElement.getAttribute(i.loadingCssClass);t.isDefAndNotNull(e)&&this.app.setLoadingCssClass(e)}},{key:"maybeSetUpdateScrollPosition_",value:function(){var e=this.baseElement.getAttribute(i.updateScrollPosition);t.isDefAndNotNull(e)&&("false"===e?this.app.setUpdateScrollPosition(!1):this.app.setUpdateScrollPosition(!0))}},{key:"querySelectorAllAsArray_",value:function(e){return Array.prototype.slice.call(r.document.querySelectorAll(e))}},{key:"updateElementIdIfSpecialSurface_",value:function(e){e.id||e!==r.document.body||(e.id="senna_surface_"+t.getUid())}},{key:"setBaseElement",value:function(e){this.baseElement=e}}]),u}(a);this.senna.AppDataAttributeHandler=u}.call(this),function(){var e=this.senna.globals,t=this.senna.AppDataAttributeHandler,n=new t;e.document.addEventListener("DOMContentLoaded",function(){n.setBaseElement(e.document.body),n.handle()}),this.senna.dataAttributeHandler=n}.call(this)}).call(this); \ No newline at end of file diff --git a/build/globals/senna.js b/build/globals/senna.js index 2e62d2c..2916ad9 100644 --- a/build/globals/senna.js +++ b/build/globals/senna.js @@ -1,7 +1,7 @@ /** * Senna.js - A blazing-fast Single Page Application engine * @author Liferay, Inc. - * @version v2.0.2 + * @version v2.0.3 * @link http://sennajs.com * @license BSD-3-Clause */ @@ -7159,7 +7159,7 @@ babelHelpers; _this5.activeScreen.deactivate(); } _this5.prepareNavigateHistory_(path, nextScreen, opt_replaceHistory); - _this5.prepareNavigateSurfaces_(nextScreen, _this5.surfaces, route.extractParams(path)); + _this5.prepareNavigateSurfaces_(nextScreen, _this5.surfaces, _this5.extractParams(route, path)); }).then(function () { return nextScreen.evaluateStyles(_this5.surfaces); }).then(function () { @@ -7177,6 +7177,19 @@ babelHelpers; }); } + /** + * Extracts params according to the given path and route. + * @param {!Route} route + * @param {string} path + * @param {!Object} + */ + + }, { + key: 'extractParams', + value: function extractParams(route, path) { + return route.extractParams(this.getRoutePath(path)); + } + /** * Finalizes a screen navigation. * @param {!string} path Path containing the querystring part. @@ -7220,12 +7233,7 @@ babelHelpers; return null; } - path = utils.getUrlPathWithoutHash(path); - - // Makes sure that the path substring will be in the expected format - // (that is, will end with a "/"). - path = utils.getUrlPathWithoutHash(path.substr(this.basePath.length)); - + path = this.getRoutePath(path); for (var i = 0; i < this.routes.length; i++) { var route = this.routes[i]; if (route.matchesPath(path)) { @@ -7302,6 +7310,22 @@ babelHelpers; return this.loadingCssClass; } + /** + * Returns the given path formatted to be matched by a route. This will, for + * example, remove the base path from it. + * @param {string} path + * @return {string} + */ + + }, { + key: 'getRoutePath', + value: function getRoutePath(path) { + path = utils.getUrlPathWithoutHash(path); + // Makes sure that the path substring will be in the expected format + // (that is, will end with a "/"), even after removing the base path. + return utils.getUrlPathWithoutHash(path.substr(this.basePath.length)); + } + /** * Gets the update scroll position value. * @return {boolean} diff --git a/build/globals/senna.js.map b/build/globals/senna.js.map index 2b8e772..c74fc49 100644 --- a/build/globals/senna.js.map +++ b/build/globals/senna.js.map @@ -1 +1 @@ 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globals = {\n\tdocument: document,\n\twindow: window\n};\n\nexport default globals;","'use strict';\n\n/**\n * A collection of core utility functions.\n * @const\n */\n\nlet compatibilityModeData_;\n\n/**\n * Counter for unique id.\n * @type {Number}\n * @private\n */\nlet uniqueIdCounter_ = 1;\n\n/**\n * Unique id property prefix.\n * @type {String}\n * @protected\n */\nexport const UID_PROPERTY = 'core_' + ((Math.random() * 1e9) >>> 0);\n\n/**\n * When defining a class Foo with an abstract method bar(), you can do:\n * Foo.prototype.bar = abstractMethod\n *\n * Now if a subclass of Foo fails to override bar(), an error will be thrown\n * when bar() is invoked.\n *\n * @type {!Function}\n * @throws {Error} when invoked to indicate the method should be overridden.\n */\nexport function abstractMethod() {\n\tthrow Error('Unimplemented abstract method');\n}\n\n/**\n * Loops constructor super classes collecting its properties values. If\n * property is not available on the super class `undefined` will be\n * collected as value for the class hierarchy position.\n * @param {!function()} constructor Class constructor.\n * @param {string} propertyName Property name to be collected.\n * @return {Array.<*>} Array of collected values.\n * TODO(*): Rethink superclass loop.\n */\nexport function collectSuperClassesProperty(constructor, propertyName) {\n\tvar propertyValues = [constructor[propertyName]];\n\twhile (constructor.__proto__ && !constructor.__proto__.isPrototypeOf(Function)) {\n\t\tconstructor = constructor.__proto__;\n\t\tpropertyValues.push(constructor[propertyName]);\n\t}\n\treturn propertyValues;\n}\n\n/**\n * Disables Metal.js's compatibility mode.\n */\nexport function disableCompatibilityMode() {\n\tcompatibilityModeData_ = null;\n}\n\n/**\n * Enables Metal.js's compatibility mode with the following features from rc\n * and 1.x versions:\n * - Using \"key\" to reference component instances. In the current version\n * this should be done via \"ref\" instead. This allows old code still\n * using \"key\" to keep working like before. NOTE: this may cause\n * problems, since \"key\" is meant to be used differently. Only use this\n * if it's not possible to upgrade the code to use \"ref\" instead.\n * @param {Object=} opt_data Optional object with data to specify more\n * details, such as:\n * - renderers {Array} the template renderers that should be in\n * compatibility mode, either their constructors or strings\n * representing them (e.g. 'soy' or 'jsx'). By default, all the ones\n * that extend from IncrementalDomRenderer.\n * @type {Object}\n */\nexport function enableCompatibilityMode(opt_data = {}) {\n\tcompatibilityModeData_ = opt_data;\n}\n\n/**\n * Returns the data used for compatibility mode, or nothing if it hasn't been\n * enabled.\n * @return {Object}\n */\nexport function getCompatibilityModeData() {\n\t// Compatibility mode can be set via the __METAL_COMPATIBILITY__ global var.\n\tif (!compatibilityModeData_) {\n\t\tif (typeof window !== 'undefined' && window.__METAL_COMPATIBILITY__) {\n\t\t\tenableCompatibilityMode(window.__METAL_COMPATIBILITY__);\n\t\t}\n\t}\n\treturn compatibilityModeData_;\n}\n\n/**\n * Gets the name of the given function. If the current browser doesn't\n * support the `name` property, this will calculate it from the function's\n * content string.\n * @param {!function()} fn\n * @return {string}\n */\nexport function getFunctionName(fn) {\n\tif (!fn.name) {\n\t\tvar str = fn.toString();\n\t\tfn.name = str.substring(9, str.indexOf('('));\n\t}\n\treturn fn.name;\n}\n\n/**\n * Gets an unique id. If `opt_object` argument is passed, the object is\n * mutated with an unique id. Consecutive calls with the same object\n * reference won't mutate the object again, instead the current object uid\n * returns. See {@link UID_PROPERTY}.\n * @param {Object=} opt_object Optional object to be mutated with the uid. If\n * not specified this method only returns the uid.\n * @param {boolean=} opt_noInheritance Optional flag indicating if this\n * object's uid property can be inherited from parents or not.\n * @throws {Error} when invoked to indicate the method should be overridden.\n */\nexport function getUid(opt_object, opt_noInheritance) {\n\tif (opt_object) {\n\t\tvar id = opt_object[UID_PROPERTY];\n\t\tif (opt_noInheritance && !opt_object.hasOwnProperty(UID_PROPERTY)) {\n\t\t\tid = null;\n\t\t}\n\t\treturn id || (opt_object[UID_PROPERTY] = uniqueIdCounter_++);\n\t}\n\treturn uniqueIdCounter_++;\n}\n\n/**\n * The identity function. Returns its first argument.\n * @param {*=} opt_returnValue The single value that will be returned.\n * @return {?} The first argument.\n */\nexport function identityFunction(opt_returnValue) {\n\treturn opt_returnValue;\n}\n\n/**\n * Returns true if the specified value is a boolean.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is boolean.\n */\nexport function isBoolean(val) {\n\treturn typeof val === 'boolean';\n}\n\n/**\n * Returns true if the specified value is not undefined.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is defined.\n */\nexport function isDef(val) {\n\treturn val !== undefined;\n}\n\n/**\n * Returns true if value is not undefined or null.\n * @param {*} val\n * @return {boolean}\n */\nexport function isDefAndNotNull(val) {\n\treturn isDef(val) && !isNull(val);\n}\n\n/**\n * Returns true if value is a document.\n * @param {*} val\n * @return {boolean}\n */\nexport function isDocument(val) {\n\treturn val && typeof val === 'object' && val.nodeType === 9;\n}\n\n/**\n * Returns true if value is a dom element.\n * @param {*} val\n * @return {boolean}\n */\nexport function isElement(val) {\n\treturn val && typeof val === 'object' && val.nodeType === 1;\n}\n\n/**\n * Returns true if the specified value is a function.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is a function.\n */\nexport function isFunction(val) {\n\treturn typeof val === 'function';\n}\n\n/**\n * Returns true if value is null.\n * @param {*} val\n * @return {boolean}\n */\nexport function isNull(val) {\n\treturn val === null;\n}\n\n/**\n * Returns true if the specified value is a number.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is a number.\n */\nexport function isNumber(val) {\n\treturn typeof val === 'number';\n}\n\n/**\n * Returns true if value is a window.\n * @param {*} val\n * @return {boolean}\n */\nexport function isWindow(val) {\n\treturn val !== null && val === val.window;\n}\n\n/**\n * Returns true if the specified value is an object. This includes arrays\n * and functions.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is an object.\n */\nexport function isObject(val) {\n\tvar type = typeof val;\n\treturn type === 'object' && val !== null || type === 'function';\n}\n\n/**\n * Returns true if value is a Promise.\n * @param {*} val\n * @return {boolean}\n */\nexport function isPromise(val) {\n\treturn val && typeof val === 'object' && typeof val.then === 'function';\n}\n\n/**\n * Returns true if value is a string.\n * @param {*} val\n * @return {boolean}\n */\nexport function isString(val) {\n\treturn typeof val === 'string' || val instanceof String;\n}\n\n/**\n * Merges the values of a export function property a class with the values of that\n * property for all its super classes, and stores it as a new static\n * property of that class. If the export function property already existed, it won't\n * be recalculated.\n * @param {!function()} constructor Class constructor.\n * @param {string} propertyName Property name to be collected.\n * @param {function(*, *):*=} opt_mergeFn Function that receives an array filled\n * with the values of the property for the current class and all its super classes.\n * Should return the merged value to be stored on the current class.\n * @return {boolean} Returns true if merge happens, false otherwise.\n */\nexport function mergeSuperClassesProperty(constructor, propertyName, opt_mergeFn) {\n\tvar mergedName = propertyName + '_MERGED';\n\tif (constructor.hasOwnProperty(mergedName)) {\n\t\treturn false;\n\t}\n\n\tvar merged = collectSuperClassesProperty(constructor, propertyName);\n\tif (opt_mergeFn) {\n\t\tmerged = opt_mergeFn(merged);\n\t}\n\tconstructor[mergedName] = merged;\n\treturn true;\n}\n\n/**\n * Null function used for default values of callbacks, etc.\n * @return {void} Nothing.\n */\nexport function nullFunction() {}\n","'use strict';\n\n// This file exists just for backwards compatibility, making sure that old\n// default imports for this file still work. It's best to use the named exports\n// for each function instead though, since that allows bundlers like Rollup to\n// reduce the bundle size by removing unused code.\nimport * as core from './coreNamed';\n\nexport default core;\nexport { core };\nexport * from './coreNamed';\n","'use strict';\n\nimport { isDef } from '../core';\n\nclass array {\n\t/**\n\t * Checks if the given arrays have the same content.\n\t * @param {!Array<*>} arr1\n\t * @param {!Array<*>} arr2\n\t * @return {boolean}\n\t */\n\tstatic equal(arr1, arr2) {\n\t\tif (arr1.length !== arr2.length) {\n\t\t\treturn false;\n\t\t}\n\t\tfor (var i = 0; i < arr1.length; i++) {\n\t\t\tif (arr1[i] !== arr2[i]) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\t\treturn true;\n\t}\n\n\t/**\n\t * Returns the first value in the given array that isn't undefined.\n\t * @param {!Array} arr\n\t * @return {*}\n\t */\n\tstatic firstDefinedValue(arr) {\n\t\tfor (var i = 0; i < arr.length; i++) {\n\t\t\tif (arr[i] !== undefined) {\n\t\t\t\treturn arr[i];\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Transforms the input nested array to become flat.\n\t * @param {Array.<*|Array.<*>>} arr Nested array to flatten.\n\t * @param {Array.<*>} opt_output Optional output array.\n\t * @return {Array.<*>} Flat array.\n\t */\n\tstatic flatten(arr, opt_output) {\n\t\tvar output = opt_output || [];\n\t\tfor (var i = 0; i < arr.length; i++) {\n\t\t\tif (Array.isArray(arr[i])) {\n\t\t\t\tarray.flatten(arr[i], output);\n\t\t\t} else {\n\t\t\t\toutput.push(arr[i]);\n\t\t\t}\n\t\t}\n\t\treturn output;\n\t}\n\n\t/**\n\t * Removes the first occurrence of a particular value from an array.\n\t * @param {Array.} arr Array from which to remove value.\n\t * @param {T} obj Object to remove.\n\t * @return {boolean} True if an element was removed.\n\t * @template T\n\t */\n\tstatic remove(arr, obj) {\n\t\tvar i = arr.indexOf(obj);\n\t\tvar rv;\n\t\tif ( (rv = i >= 0) ) {\n\t\t\tarray.removeAt(arr, i);\n\t\t}\n\t\treturn rv;\n\t}\n\n\t/**\n\t * Removes from an array the element at index i\n\t * @param {Array} arr Array or array like object from which to remove value.\n\t * @param {number} i The index to remove.\n\t * @return {boolean} True if an element was removed.\n\t */\n\tstatic removeAt(arr, i) {\n\t\treturn Array.prototype.splice.call(arr, i, 1).length === 1;\n\t}\n\n\t/**\n\t * Slices the given array, just like Array.prototype.slice, but this\n\t * is faster and working on all array-like objects (like arguments).\n\t * @param {!Object} arr Array-like object to slice.\n\t * @param {number} start The index that should start the slice.\n\t * @param {number=} opt_end The index where the slice should end, not\n\t * included in the final array. If not given, all elements after the\n\t * start index will be included.\n\t * @return {!Array}\n\t */\n\tstatic slice(arr, start, opt_end) {\n\t\tvar sliced = [];\n\t\tvar end = isDef(opt_end) ? opt_end : arr.length;\n\t\tfor (var i = start; i < end; i++) {\n\t\t\tsliced.push(arr[i]);\n\t\t}\n\t\treturn sliced;\n\t}\n}\n\nexport default array;\n","/*!\n * Polyfill from Google's Closure Library.\n * Copyright 2013 The Closure Library Authors. All Rights Reserved.\n */\n\n'use strict';\n\nvar async = {};\n\n\n/**\n * Throw an item without interrupting the current execution context. For\n * example, if processing a group of items in a loop, sometimes it is useful\n * to report an error while still allowing the rest of the batch to be\n * processed.\n * @param {*} exception\n */\nasync.throwException = function(exception) {\n\t// Each throw needs to be in its own context.\n\tasync.nextTick(function() {\n\t\tthrow exception;\n\t});\n};\n\n\n/**\n * Fires the provided callback just before the current callstack unwinds, or as\n * soon as possible after the current JS execution context.\n * @param {function(this:THIS)} callback\n * @param {THIS=} opt_context Object to use as the \"this value\" when calling\n * the provided function.\n * @template THIS\n */\nasync.run = function(callback, opt_context) {\n\tif (!async.run.workQueueScheduled_) {\n\t\t// Nothing is currently scheduled, schedule it now.\n\t\tasync.nextTick(async.run.processWorkQueue);\n\t\tasync.run.workQueueScheduled_ = true;\n\t}\n\n\tasync.run.workQueue_.push(\n\t\tnew async.run.WorkItem_(callback, opt_context));\n};\n\n\n/** @private {boolean} */\nasync.run.workQueueScheduled_ = false;\n\n\n/** @private {!Array.} */\nasync.run.workQueue_ = [];\n\n/**\n * Run any pending async.run work items. This function is not intended\n * for general use, but for use by entry point handlers to run items ahead of\n * async.nextTick.\n */\nasync.run.processWorkQueue = function() {\n\t// NOTE: additional work queue items may be pushed while processing.\n\twhile (async.run.workQueue_.length) {\n\t\t// Don't let the work queue grow indefinitely.\n\t\tvar workItems = async.run.workQueue_;\n\t\tasync.run.workQueue_ = [];\n\t\tfor (var i = 0; i < workItems.length; i++) {\n\t\t\tvar workItem = workItems[i];\n\t\t\ttry {\n\t\t\t\tworkItem.fn.call(workItem.scope);\n\t\t\t} catch (e) {\n\t\t\t\tasync.throwException(e);\n\t\t\t}\n\t\t}\n\t}\n\n\t// There are no more work items, reset the work queue.\n\tasync.run.workQueueScheduled_ = false;\n};\n\n\n/**\n * @constructor\n * @final\n * @struct\n * @private\n *\n * @param {function()} fn\n * @param {Object|null|undefined} scope\n */\nasync.run.WorkItem_ = function(fn, scope) {\n\t/** @const */\n\tthis.fn = fn;\n\t/** @const */\n\tthis.scope = scope;\n};\n\n\n/**\n * Fires the provided callbacks as soon as possible after the current JS\n * execution context. setTimeout(…, 0) always takes at least 5ms for legacy\n * reasons.\n * @param {function(this:SCOPE)} callback Callback function to fire as soon as\n * possible.\n * @param {SCOPE=} opt_context Object in whose scope to call the listener.\n * @template SCOPE\n */\nasync.nextTick = function(callback, opt_context) {\n\tvar cb = callback;\n\tif (opt_context) {\n\t\tcb = callback.bind(opt_context);\n\t}\n\tcb = async.nextTick.wrapCallback_(cb);\n\t// Introduced and currently only supported by IE10.\n\t// Verify if variable is defined on the current runtime (i.e., node, browser).\n\t// Can't use typeof enclosed in a function (such as core.isFunction) or an\n\t// exception will be thrown when the function is called on an environment\n\t// where the variable is undefined.\n\tif (typeof setImmediate === 'function') {\n\t\tsetImmediate(cb);\n\t\treturn;\n\t}\n\t// Look for and cache the custom fallback version of setImmediate.\n\tif (!async.nextTick.setImmediate_) {\n\t\tasync.nextTick.setImmediate_ = async.nextTick.getSetImmediateEmulator_();\n\t}\n\tasync.nextTick.setImmediate_(cb);\n};\n\n\n/**\n * Cache for the setImmediate implementation.\n * @type {function(function())}\n * @private\n */\nasync.nextTick.setImmediate_ = null;\n\n\n/**\n * Determines the best possible implementation to run a function as soon as\n * the JS event loop is idle.\n * @return {function(function())} The \"setImmediate\" implementation.\n * @private\n */\nasync.nextTick.getSetImmediateEmulator_ = function() {\n\t// Create a private message channel and use it to postMessage empty messages\n\t// to ourselves.\n\tvar Channel;\n\n\t// Verify if variable is defined on the current runtime (i.e., node, browser).\n\t// Can't use typeof enclosed in a function (such as core.isFunction) or an\n\t// exception will be thrown when the function is called on an environment\n\t// where the variable is undefined.\n\tif (typeof MessageChannel === 'function') {\n\t\tChannel = MessageChannel;\n\t}\n\n\t// If MessageChannel is not available and we are in a browser, implement\n\t// an iframe based polyfill in browsers that have postMessage and\n\t// document.addEventListener. The latter excludes IE8 because it has a\n\t// synchronous postMessage implementation.\n\tif (typeof Channel === 'undefined' && typeof window !== 'undefined' &&\n\t\twindow.postMessage && window.addEventListener) {\n\t\t/** @constructor */\n\t\tChannel = function() {\n\t\t\t// Make an empty, invisible iframe.\n\t\t\tvar iframe = document.createElement('iframe');\n\t\t\tiframe.style.display = 'none';\n\t\t\tiframe.src = '';\n\t\t\tdocument.documentElement.appendChild(iframe);\n\t\t\tvar win = iframe.contentWindow;\n\t\t\tvar doc = win.document;\n\t\t\tdoc.open();\n\t\t\tdoc.write('');\n\t\t\tdoc.close();\n\t\t\tvar message = 'callImmediate' + Math.random();\n\t\t\tvar origin = win.location.protocol + '//' + win.location.host;\n\t\t\tvar onmessage = function(e) {\n\t\t\t\t// Validate origin and message to make sure that this message was\n\t\t\t\t// intended for us.\n\t\t\t\tif (e.origin !== origin && e.data !== message) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t\tthis.port1.onmessage();\n\t\t\t}.bind(this);\n\t\t\twin.addEventListener('message', onmessage, false);\n\t\t\tthis.port1 = {};\n\t\t\tthis.port2 = {\n\t\t\t\tpostMessage: function() {\n\t\t\t\t\twin.postMessage(message, origin);\n\t\t\t\t}\n\t\t\t};\n\t\t};\n\t}\n\tif (typeof Channel !== 'undefined') {\n\t\tvar channel = new Channel();\n\t\t// Use a fifo linked list to call callbacks in the right order.\n\t\tvar head = {};\n\t\tvar tail = head;\n\t\tchannel.port1.onmessage = function() {\n\t\t\thead = head.next;\n\t\t\tvar cb = head.cb;\n\t\t\thead.cb = null;\n\t\t\tcb();\n\t\t};\n\t\treturn function(cb) {\n\t\t\ttail.next = {\n\t\t\t\tcb: cb\n\t\t\t};\n\t\t\ttail = tail.next;\n\t\t\tchannel.port2.postMessage(0);\n\t\t};\n\t}\n\t// Implementation for IE6-8: Script elements fire an asynchronous\n\t// onreadystatechange event when inserted into the DOM.\n\tif (typeof document !== 'undefined' && 'onreadystatechange' in\n\t\tdocument.createElement('script')) {\n\t\treturn function(cb) {\n\t\t\tvar script = document.createElement('script');\n\t\t\tscript.onreadystatechange = function() {\n\t\t\t\t// Clean up and call the callback.\n\t\t\t\tscript.onreadystatechange = null;\n\t\t\t\tscript.parentNode.removeChild(script);\n\t\t\t\tscript = null;\n\t\t\t\tcb();\n\t\t\t\tcb = null;\n\t\t\t};\n\t\t\tdocument.documentElement.appendChild(script);\n\t\t};\n\t}\n\t// Fall back to setTimeout with 0. In browsers this creates a delay of 5ms\n\t// or more.\n\treturn function(cb) {\n\t\tsetTimeout(cb, 0);\n\t};\n};\n\n\n/**\n * Helper function that is overrided to protect callbacks with entry point\n * monitor if the application monitors entry points.\n * @param {function()} callback Callback function to fire as soon as possible.\n * @return {function()} The wrapped callback.\n * @private\n */\nasync.nextTick.wrapCallback_ = function(opt_returnValue) {\n\treturn opt_returnValue;\n};\n\nexport default async;\n","'use strict';\n\n/**\n * Disposable utility. When inherited provides the `dispose` function to its\n * subclass, which is responsible for disposing of any object references\n * when an instance won't be used anymore. Subclasses should override\n * `disposeInternal` to implement any specific disposing logic.\n * @constructor\n */\nclass Disposable {\n\tconstructor() {\n\t\t/**\n\t\t * Flag indicating if this instance has already been disposed.\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.disposed_ = false;\n\t}\n\n\t/**\n\t * Disposes of this instance's object references. Calls `disposeInternal`.\n\t */\n\tdispose() {\n\t\tif (!this.disposed_) {\n\t\t\tthis.disposeInternal();\n\t\t\tthis.disposed_ = true;\n\t\t}\n\t}\n\n\t/**\n\t * Subclasses should override this method to implement any specific\n\t * disposing logic (like clearing references and calling `dispose` on other\n\t * disposables).\n\t */\n\tdisposeInternal() {}\n\n\t/**\n\t * Checks if this instance has already been disposed.\n\t * @return {boolean}\n\t */\n\tisDisposed() {\n\t\treturn this.disposed_;\n\t}\n}\n\nexport default Disposable;\n","'use strict';\n\nclass object {\n\t/**\n\t * Copies all the members of a source object to a target object.\n\t * @param {Object} target Target object.\n\t * @param {...Object} var_args The objects from which values will be copied.\n\t * @return {Object} Returns the target object reference.\n\t */\n\tstatic mixin(target) {\n\t\tvar key, source;\n\t\tfor (var i = 1; i < arguments.length; i++) {\n\t\t\tsource = arguments[i];\n\t\t\tfor (key in source) {\n\t\t\t\ttarget[key] = source[key];\n\t\t\t}\n\t\t}\n\t\treturn target;\n\t}\n\n\t/**\n\t * Returns an object based on its fully qualified external name.\n\t * @param {string} name The fully qualified name.\n\t * @param {object=} opt_obj The object within which to look; default is\n\t * window.\n\t * @return {?} The value (object or primitive) or, if not found, undefined.\n\t */\n\tstatic getObjectByName(name, opt_obj) {\n\t\tvar scope = opt_obj || window;\n\t\tvar parts = name.split('.');\n\t\treturn parts.reduce((part, key) => part[key], scope);\n\t}\n\n\t/**\n\t * Returns a new object with the same keys as the given one, but with\n\t * their values set to the return values of the specified function.\n\t * @param {!Object} obj\n\t * @param {!function(string, *)} fn\n\t * @return {!Object}\n\t */\n\tstatic map(obj, fn) {\n\t\tvar mappedObj = {};\n\t\tvar keys = Object.keys(obj);\n\t\tfor (var i = 0; i < keys.length; i++) {\n\t\t\tmappedObj[keys[i]] = fn(keys[i], obj[keys[i]]);\n\t\t}\n\t\treturn mappedObj;\n\t}\n\n\t/**\n\t * Checks if the two given objects are equal. This is done via a shallow\n\t * check, including only the keys directly contained by the 2 objects.\n\t * @return {boolean}\n\t */\n\tstatic shallowEqual(obj1, obj2) {\n\t\tif (obj1 === obj2) {\n\t\t\treturn true;\n\t\t}\n\n\t\tvar keys1 = Object.keys(obj1);\n\t\tvar keys2 = Object.keys(obj2);\n\t\tif (keys1.length !== keys2.length) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor (var i = 0; i < keys1.length; i++) {\n\t\t\tif (obj1[keys1[i]] !== obj2[keys1[i]]) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\t\treturn true;\n\t}\n}\n\nexport default object;\n","'use strict';\n\nclass string {\n\t/**\n\t * Removes the breaking spaces from the left and right of the string and\n\t * collapses the sequences of breaking spaces in the middle into single spaces.\n\t * The original and the result strings render the same way in HTML.\n\t * @param {string} str A string in which to collapse spaces.\n\t * @return {string} Copy of the string with normalized breaking spaces.\n\t */\n\tstatic collapseBreakingSpaces(str) {\n\t\treturn str.replace(/[\\t\\r\\n ]+/g, ' ').replace(/^[\\t\\r\\n ]+|[\\t\\r\\n ]+$/g, '');\n\t}\n\n\t/**\n\t* Escapes characters in the string that are not safe to use in a RegExp.\n\t* @param {*} str The string to escape. If not a string, it will be casted\n\t* to one.\n\t* @return {string} A RegExp safe, escaped copy of {@code s}.\n\t*/\n\tstatic escapeRegex(str) {\n\t\treturn String(str)\n\t\t\t.replace(/([-()\\[\\]{}+?*.$\\^|,:#}\n\t */\n\tgetAll(name) {\n\t\treturn this.values[name.toLowerCase()];\n\t}\n\n\t/**\n\t * Returns true if the map is empty, false otherwise.\n\t * @return {boolean}\n\t */\n\tisEmpty() {\n\t\treturn this.size() === 0;\n\t}\n\n\t/**\n\t * Gets array of key names.\n\t * @return {Array.}\n\t */\n\tnames() {\n\t\treturn Object.keys(this.values).map((key) => this.keys[key]);\n\t}\n\n\t/**\n\t * Removes all values from a key name.\n\t * @param {string} name\n\t * @chainable\n\t */\n\tremove(name) {\n\t\tdelete this.keys[name.toLowerCase()];\n\t\tdelete this.values[name.toLowerCase()];\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the value of a key name. Relevant to replace the current values with\n\t * a new one.\n\t * @param {string} name\n\t * @param {*} value\n\t * @chainable\n\t */\n\tset(name, value) {\n\t\tthis.keys[name.toLowerCase()] = name;\n\t\tthis.values[name.toLowerCase()] = [value];\n\t\treturn this;\n\t}\n\n\t/**\n\t * Gets the size of the map key names.\n\t * @return {number}\n\t */\n\tsize() {\n\t\treturn this.names().length;\n\t}\n\n\t/**\n\t * Returns the parsed values as a string.\n\t * @return {string}\n\t */\n\ttoString() {\n\t\treturn JSON.stringify(this.values);\n\t}\n}\n\nexport default MultiMap;\n","'use strict';\n\nimport { array } from 'metal';\n\n/**\n * Generic tree node data structure with arbitrary number of child nodes.\n * @param {V} value Value.\n * @constructor\n */\nclass TreeNode {\n\n\tconstructor(value) {\n\t\t/**\n\t\t * The value.\n\t\t * @private {V}\n\t\t */\n\t\tthis.value_ = value;\n\n\t\t/**\n\t\t * Reference to the parent node or null if it has no parent.\n\t\t * @private {TreeNode}\n\t\t */\n\t\tthis.parent_ = null;\n\n\t\t/**\n\t\t * Child nodes or null in case of leaf node.\n\t\t * @private {Array}\n\t\t */\n\t\tthis.children_ = null;\n\t}\n\n\t/**\n\t * Appends a child node to this node.\n\t * @param {!TreeNode} child Orphan child node.\n\t */\n\taddChild(child) {\n\t\tassertChildHasNoParent(child);\n\t\tchild.setParent(this);\n\t\tthis.children_ = this.children_ || [];\n\t\tthis.children_.push(child);\n\t}\n\n\t/**\n\t * Tells whether this node is the ancestor of the given node.\n\t * @param {!TreeNode} node A node.\n\t * @return {boolean} Whether this node is the ancestor of {@code node}.\n\t */\n\tcontains(node) {\n\t\tlet current = node.getParent();\n\t\twhile (current) {\n\t\t\tif (current === this) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t\tcurrent = current.getParent();\n\t\t}\n\t\treturn false;\n\t}\n\n\t/**\n\t * @return {!Array} All ancestor nodes in bottom-up order.\n\t */\n\tgetAncestors() {\n\t\tlet ancestors = [];\n\t\tlet node = this.getParent();\n\t\twhile (node) {\n\t\t\tancestors.push(node);\n\t\t\tnode = node.getParent();\n\t\t}\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Gets the child node of this node at the given index.\n\t * @param {number} index Child index.\n\t * @return {?TreeNode} The node at the given index\n\t * or null if not found.\n\t */\n\tgetChildAt(index) {\n\t\treturn this.getChildren()[index] || null;\n\t}\n\n\t/**\n\t * @return {?Array} Child nodes or null in case of leaf node.\n\t */\n\tgetChildren() {\n\t\treturn this.children_ || TreeNode.EMPTY_ARRAY;\n\t}\n\n\t/**\n\t * @return {number} The number of children.\n\t */\n\tgetChildCount() {\n\t\treturn this.getChildren().length;\n\t}\n\n\t/**\n\t * @return {number} The number of ancestors of the node.\n\t */\n\tgetDepth() {\n\t\tlet depth = 0;\n\t\tlet node = this;\n\t\twhile (node.getParent()) {\n\t\t\tdepth++;\n\t\t\tnode = node.getParent();\n\t\t}\n\t\treturn depth;\n\t}\n\n\t/**\n\t * @return {?TreeNode} Parent node or null if it has no parent.\n\t */\n\tgetParent() {\n\t\treturn this.parent_;\n\t}\n\n\t/**\n\t * @return {!TreeNode} The root of the tree structure, i.e. the farthest\n\t * ancestor of the node or the node itself if it has no parents.\n\t */\n\tgetRoot() {\n\t\tlet root = this;\n\t\twhile (root.getParent()) {\n\t\t\troot = root.getParent();\n\t\t}\n\t\treturn root;\n\t}\n\n\t/**\n\t * Gets the value.\n\t * @return {V} The value.\n\t */\n\tgetValue() {\n\t\treturn this.value_;\n\t}\n\n\t/**\n\t * @return {boolean} Whether the node is a leaf node.\n\t */\n\tisLeaf() {\n\t\treturn !this.getChildCount();\n\t}\n\n\t/**\n\t * Removes the given child node of this node.\n\t * @param {TreeNode} child The node to remove.\n\t * @return {TreeNode} The removed node if any, null otherwise.\n\t */\n\tremoveChild(child) {\n\t\tif (array.remove(this.getChildren(), child)) {\n\t\t\treturn child;\n\t\t}\n\t\treturn null;\n\t}\n\n\t/**\n\t * Sets the parent node of this node. The callers must ensure that the\n\t * parent node and only that has this node among its children.\n\t * @param {TreeNode} parent The parent to set. If null, the node will be\n\t * detached from the tree.\n\t * @protected\n\t */\n\tsetParent(parent) {\n\t\tthis.parent_ = parent;\n\t}\n\n\t/**\n\t * Traverses the subtree. The first callback starts with this node,\n\t * and visits the descendant nodes depth-first, in preorder.\n\t * The second callback, starts with deepest child then visits\n\t * the ancestor nodes depth-first, in postorder. E.g.\n\t *\n\t * \t A\n\t * / \\\n\t * B C\n\t * / / \\\n\t * D E F\n\t *\n\t * preorder -> ['A', 'B', 'D', 'C', 'E', 'F']\n\t * postorder -> ['D', 'B', 'E', 'F', 'C', 'A']\n\t *\n\t * @param {function=} opt_preorderFn The callback to execute when visiting a node.\n\t * @param {function=} opt_postorderFn The callback to execute before leaving a node.\n\t */\n\ttraverse(opt_preorderFn, opt_postorderFn) {\n\t\tif (opt_preorderFn) {\n\t\t\topt_preorderFn(this);\n\t\t}\n\t\tthis.getChildren().forEach((child) => child.traverse(opt_preorderFn, opt_postorderFn));\n\t\tif (opt_postorderFn) {\n\t\t\topt_postorderFn(this);\n\t\t}\n\t}\n\n}\n\n/**\n * Constant for empty array to avoid unnecessary allocations.\n * @private\n */\nTreeNode.EMPTY_ARRAY = [];\n\n/**\n * Asserts that child has no parent.\n * @param {TreeNode} child A child.\n * @private\n */\nconst assertChildHasNoParent = function(child) {\n\tif (child.getParent()) {\n\t\tthrow new Error('Cannot add child with parent.');\n\t}\n};\n\nexport default TreeNode;\n","'use strict';\n\nimport MultiMap from '../MultiMap';\nimport TreeNode from '../TreeNode';\n\nexport { MultiMap, TreeNode };\n","'use strict';\n\nimport { isDef, string } from 'metal';\nimport parse from './parse';\nimport { MultiMap } from 'metal-structs';\n\nvar parseFn_ = parse;\n\nclass Uri {\n\n\t/**\n\t * This class contains setters and getters for the parts of the URI.\n\t * The following figure displays an example URIs and their component parts.\n\t *\n\t * path\n\t *\t ┌───┴────┐\n\t *\t abc://example.com:123/path/data?key=value#fragid1\n\t *\t └┬┘ └────┬────┘ └┬┘ └───┬───┘ └──┬──┘\n\t * protocol hostname port search hash\n\t * └──────┬───────┘\n\t * host\n\t *\n\t * @param {*=} opt_uri Optional string URI to parse\n\t * @constructor\n\t */\n\tconstructor(opt_uri = '') {\n\t\tthis.url = Uri.parse(this.maybeAddProtocolAndHostname_(opt_uri));\n\t}\n\n\t/**\n\t * Adds parameters to uri from a MultiMap as source.\n\t * @param {MultiMap} multimap The MultiMap containing the\n\t * parameters.\n\t * @protected\n\t * @chainable\n\t */\n\taddParametersFromMultiMap(multimap) {\n\t\tmultimap.names().forEach((name) => {\n\t\t\tmultimap.getAll(name).forEach((value) => {\n\t\t\t\tthis.addParameterValue(name, value);\n\t\t\t});\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds the value of the named query parameters.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value. Will be explicitly casted to String.\n\t * @chainable\n\t */\n\taddParameterValue(name, value) {\n\t\tthis.ensureQueryInitialized_();\n\t\tif (isDef(value)) {\n\t\t\tvalue = String(value);\n\t\t}\n\t\tthis.query.add(name, value);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds the values of the named query parameter.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value.\n\t * @chainable\n\t */\n\taddParameterValues(name, values) {\n\t\tvalues.forEach((value) => this.addParameterValue(name, value));\n\t\treturn this;\n\t}\n\n\t/**\n\t * Ensures query internal map is initialized and synced with initial value\n\t * extracted from URI search part.\n\t * @protected\n\t */\n\tensureQueryInitialized_() {\n\t\tif (this.query) {\n\t\t\treturn;\n\t\t}\n\t\tthis.query = new MultiMap();\n\t\tvar search = this.url.search;\n\t\tif (search) {\n\t\t\tsearch.substring(1).split('&').forEach((param) => {\n\t\t\t\tvar [key, value] = param.split('=');\n\t\t\t\tif (isDef(value)) {\n\t\t\t\t\tvalue = Uri.urlDecode(value);\n\t\t\t\t}\n\t\t\t\tthis.addParameterValue(key, value);\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Gets the hash part of uri.\n\t * @return {string}\n\t */\n\tgetHash() {\n\t\treturn this.url.hash || '';\n\t}\n\n\t/**\n\t * Gets the host part of uri. E.g. [hostname]:[port].\n\t * @return {string}\n\t */\n\tgetHost() {\n\t\tvar host = this.getHostname();\n\t\tif (host) {\n\t\t\tvar port = this.getPort();\n\t\t\tif (port && port !== '80') {\n\t\t\t\thost += ':' + port;\n\t\t\t}\n\t\t}\n\t\treturn host;\n\t}\n\n\t/**\n\t * Gets the hostname part of uri without protocol and port.\n\t * @return {string}\n\t */\n\tgetHostname() {\n\t\tvar hostname = this.url.hostname;\n\t\tif (hostname === Uri.HOSTNAME_PLACEHOLDER) {\n\t\t\treturn '';\n\t\t}\n\t\treturn hostname;\n\t}\n\n\t/**\n\t * Gets the origin part of uri. E.g. http://[hostname]:[port].\n\t * @return {string}\n\t */\n\tgetOrigin() {\n\t\tvar host = this.getHost();\n\t\tif (host) {\n\t\t\treturn this.getProtocol() + '//' + host;\n\t\t}\n\t\treturn '';\n\t}\n\n\t/**\n\t * Returns the first value for a given parameter or undefined if the given\n\t * parameter name does not appear in the query string.\n\t * @param {string} paramName Unescaped parameter name.\n\t * @return {string|undefined} The first value for a given parameter or\n\t * undefined if the given parameter name does not appear in the query\n\t * string.\n\t */\n\tgetParameterValue(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.get(name);\n\t}\n\n\t/**\n\t * Returns the values for a given parameter as a list of decoded\n\t * query parameter values.\n\t * @param {string} name The parameter to get values for.\n\t * @return {!Array} The values for a given parameter as a list of decoded\n\t * query parameter values.\n\t */\n\tgetParameterValues(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.getAll(name);\n\t}\n\n\t/**\n\t * Returns the names of the parameters.\n\t * @return {!Array} The names for the parameters as a list of\n\t * strings.\n\t */\n\tgetParameterNames() {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.names();\n\t}\n\n\t/**\n\t * Gets the function currently being used to parse URIs.\n\t * @return {!function()}\n\t */\n\tstatic getParseFn() {\n\t\treturn parseFn_;\n\t}\n\n\t/**\n\t * Gets the pathname part of uri.\n\t * @return {string}\n\t */\n\tgetPathname() {\n\t\treturn this.url.pathname;\n\t}\n\n\t/**\n\t * Gets the port number part of uri as string.\n\t * @return {string}\n\t */\n\tgetPort() {\n\t\treturn this.url.port;\n\t}\n\n\t/**\n\t * Gets the protocol part of uri. E.g. http:.\n\t * @return {string}\n\t */\n\tgetProtocol() {\n\t\treturn this.url.protocol;\n\t}\n\n\t/**\n\t * Gets the search part of uri. Search value is retrieved from query\n\t * parameters.\n\t * @return {string}\n\t */\n\tgetSearch() {\n\t\tvar search = '';\n\t\tvar querystring = '';\n\t\tthis.getParameterNames().forEach((name) => {\n\t\t\tthis.getParameterValues(name).forEach((value) => {\n\t\t\t\tquerystring += name;\n\t\t\t\tif (isDef(value)) {\n\t\t\t\t\tquerystring += '=' + encodeURIComponent(value);\n\t\t\t\t}\n\t\t\t\tquerystring += '&';\n\t\t\t});\n\t\t});\n\t\tquerystring = querystring.slice(0, -1);\n\t\tif (querystring) {\n\t\t\tsearch += '?' + querystring;\n\t\t}\n\t\treturn search;\n\t}\n\n\t/**\n\t * Checks if uri contains the parameter.\n\t * @param {string} name\n\t * @return {boolean}\n\t */\n\thasParameter(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.contains(name);\n\t}\n\n\t/**\n\t * Makes this URL unique by adding a random param to it. Useful for avoiding\n\t * cache.\n\t */\n\tmakeUnique() {\n\t\tthis.setParameterValue(Uri.RANDOM_PARAM, string.getRandomString());\n\t\treturn this;\n\t}\n\n\t/**\n\t * Maybe adds protocol and a hostname placeholder on a parial URI if needed.\n\t * Relevent for compatibility with URL native object.\n\t * @param {string=} opt_uri\n\t * @return {string} URI with protocol and hostname placeholder.\n\t */\n\tmaybeAddProtocolAndHostname_(opt_uri) {\n\t\tvar url = opt_uri;\n\t\tif (opt_uri.indexOf('://') === -1 &&\n\t\t\topt_uri.indexOf('javascript:') !== 0) { // jshint ignore:line\n\n\t\t\turl = Uri.DEFAULT_PROTOCOL;\n\t\t\tif (opt_uri[0] !== '/' || opt_uri[1] !== '/') {\n\t\t\t\turl += '//';\n\t\t\t}\n\n\t\t\tswitch (opt_uri.charAt(0)) {\n\t\t\t\tcase '.':\n\t\t\t\tcase '?':\n\t\t\t\tcase '#':\n\t\t\t\t\turl += Uri.HOSTNAME_PLACEHOLDER;\n\t\t\t\t\turl += '/';\n\t\t\t\t\turl += opt_uri;\n\t\t\t\t\tbreak;\n\t\t\t\tcase '':\n\t\t\t\tcase '/':\n\t\t\t\t\tif (opt_uri[1] !== '/') {\n\t\t\t\t\t\turl += Uri.HOSTNAME_PLACEHOLDER;\n\t\t\t\t\t}\n\t\t\t\t\turl += opt_uri;\n\t\t\t\t\tbreak;\n\t\t\t\tdefault:\n\t\t\t\t\turl += opt_uri;\n\t\t\t}\n\t\t}\n\t\treturn url;\n\t}\n\n\t/**\n\t * Normalizes the parsed object to be in the expected standard.\n\t * @param {!Object}\n\t */\n\tstatic normalizeObject(parsed) {\n\t\tvar length = parsed.pathname ? parsed.pathname.length : 0;\n\t\tif (length > 1 && parsed.pathname[length - 1] === '/') {\n\t\t\tparsed.pathname = parsed.pathname.substr(0, length - 1);\n\t\t}\n\t\treturn parsed;\n\t}\n\n\t/**\n\t * Parses the given uri string into an object.\n\t * @param {*=} opt_uri Optional string URI to parse\n\t */\n\tstatic parse(opt_uri) {\n\t\treturn Uri.normalizeObject(parseFn_(opt_uri));\n\t}\n\n\t/**\n\t * Removes the named query parameter.\n\t * @param {string} name The parameter to remove.\n\t * @chainable\n\t */\n\tremoveParameter(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\tthis.query.remove(name);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Removes uniqueness parameter of the uri.\n\t * @chainable\n\t */\n\tremoveUnique() {\n\t\tthis.removeParameter(Uri.RANDOM_PARAM);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the hash.\n\t * @param {string} hash\n\t * @chainable\n\t */\n\tsetHash(hash) {\n\t\tthis.url.hash = hash;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the hostname.\n\t * @param {string} hostname\n\t * @chainable\n\t */\n\tsetHostname(hostname) {\n\t\tthis.url.hostname = hostname;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the value of the named query parameters, clearing previous values\n\t * for that key.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value.\n\t * @chainable\n\t */\n\tsetParameterValue(name, value) {\n\t\tthis.removeParameter(name);\n\t\tthis.addParameterValue(name, value);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the values of the named query parameters, clearing previous values\n\t * for that key.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value.\n\t * @chainable\n\t */\n\tsetParameterValues(name, values) {\n\t\tthis.removeParameter(name);\n\t\tvalues.forEach((value) => this.addParameterValue(name, value));\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the pathname.\n\t * @param {string} pathname\n\t * @chainable\n\t */\n\tsetPathname(pathname) {\n\t\tthis.url.pathname = pathname;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the port number.\n\t * @param {*} port Port number.\n\t * @chainable\n\t */\n\tsetPort(port) {\n\t\tthis.url.port = port;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the function that will be used for parsing the original string uri\n\t * into an object.\n\t * @param {!function()} parseFn\n\t */\n\tstatic setParseFn(parseFn) {\n\t\tparseFn_ = parseFn;\n\t}\n\n\t/**\n\t * Sets the protocol. If missing http: is used as default.\n\t * @param {string} protocol\n\t * @chainable\n\t */\n\tsetProtocol(protocol) {\n\t\tthis.url.protocol = protocol;\n\t\tif (this.url.protocol[this.url.protocol.length - 1] !== ':') {\n\t\t\tthis.url.protocol += ':';\n\t\t}\n\t\treturn this;\n\t}\n\n\t/**\n\t * @return {string} The string form of the url.\n\t * @override\n\t */\n\ttoString() {\n\t\tvar href = '';\n\t\tvar host = this.getHost();\n\t\tif (host) {\n\t\t\thref += this.getProtocol() + '//';\n\t\t}\n\t\thref += host + this.getPathname() + this.getSearch() + this.getHash();\n\t\treturn href;\n\t}\n\n\t/**\n\t * Joins the given paths.\n\t * @param {string} basePath\n\t * @param {...string} ...paths Any number of paths to be joined with the base url.\n\t * @static\n\t */\n\tstatic joinPaths(basePath, ...paths) {\n\t\tif (basePath.charAt(basePath.length - 1) === '/') {\n\t\t\tbasePath = basePath.substring(0, basePath.length - 1);\n\t\t}\n\t\tpaths = paths.map(path => path.charAt(0) === '/' ? path.substring(1) : path);\n\t\treturn [basePath].concat(paths).join('/').replace(/\\/$/, '');\n\t}\n\n\t/**\n\t * URL-decodes the string. We need to specially handle '+'s because\n\t * the javascript library doesn't convert them to spaces.\n\t * @param {string} str The string to url decode.\n\t * @return {string} The decoded {@code str}.\n\t */\n\tstatic urlDecode(str) {\n\t\treturn decodeURIComponent(str.replace(/\\+/g, ' '));\n\t}\n\n}\n\n/**\n * Default protocol value.\n * @type {string}\n * @default http:\n * @static\n */\nUri.DEFAULT_PROTOCOL = 'http:';\n\n/**\n * Hostname placeholder. Relevant to internal usage only.\n * @type {string}\n * @static\n */\nUri.HOSTNAME_PLACEHOLDER = 'hostname' + Date.now();\n\n/**\n * Name used by the param generated by `makeUnique`.\n * @type {string}\n * @static\n */\nUri.RANDOM_PARAM = 'zx';\n\nexport default Uri;\n","'use strict';\n\nimport globals from '../globals/globals';\nimport Uri from 'metal-uri';\n\n/**\n * A collection of static utility functions.\n * @const\n */\nclass utils {\n\n\t/**\n\t * Copies attributes form source node to target node.\n\t * @return {void}\n\t * @static\n\t */\n\tstatic copyNodeAttributes(source, target) {\n\t\tArray.prototype.slice.call(source.attributes).forEach((attribute) => target.setAttribute(attribute.name, attribute.value));\n\t}\n\n\t/**\n\t * Gets the current browser path including hashbang.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getCurrentBrowserPath() {\n\t\treturn this.getCurrentBrowserPathWithoutHash() + globals.window.location.hash;\n\t}\n\n\t/**\n\t * Gets the current browser path excluding hashbang.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getCurrentBrowserPathWithoutHash() {\n\t\treturn globals.window.location.pathname + globals.window.location.search;\n\t}\n\n\t/**\n\t * Extracts the path part of an url.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getUrlPath(url) {\n\t\tvar uri = new Uri(url);\n\t\treturn uri.getPathname() + uri.getSearch() + uri.getHash();\n\t}\n\n\t/**\n\t * Extracts the path part of an url without hashbang.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getUrlPathWithoutHash(url) {\n\t\tvar uri = new Uri(url);\n\t\treturn uri.getPathname() + uri.getSearch();\n\t}\n\n\t/**\n\t * Checks if url is in the same browser current url excluding the hashbang.\n\t * @param {!string} url\n\t * @return {boolean}\n\t * @static\n\t */\n\tstatic isCurrentBrowserPath(url) {\n\t\tif (url) {\n\t\t\treturn utils.getUrlPathWithoutHash(url) === this.getCurrentBrowserPathWithoutHash();\n\t\t}\n\t\treturn false;\n\t}\n\n\t/**\n\t * Returns true if HTML5 History api is supported.\n\t * @return {boolean}\n\t * @static\n\t */\n\tstatic isHtml5HistorySupported() {\n\t\treturn !!(globals.window.history && globals.window.history.pushState);\n\t}\n\n\t/**\n\t * Removes all attributes form node.\n\t * @return {void}\n\t * @static\n\t */\n\tstatic clearNodeAttributes(node) {\n\t\tArray.prototype.slice.call(node.attributes).forEach((attribute) => node.removeAttribute(attribute.name));\n\t}\n\n}\n\nexport default utils;","'use strict';\n\n/**\n * Debounces function execution.\n * @param {!function()} fn\n * @param {number} delay\n * @return {!function()}\n */\nfunction debounce(fn, delay) {\n\treturn function debounced() {\n\t\tvar args = arguments;\n\t\tcancelDebounce(debounced);\n\t\tdebounced.id = setTimeout(function() {\n\t\t\tfn.apply(null, args);\n\t\t}, delay);\n\t};\n}\n\n/**\n * Cancels the scheduled debounced function.\n */\nfunction cancelDebounce(debounced) {\n\tclearTimeout(debounced.id);\n}\n\nexport default debounce;\nexport { cancelDebounce, debounce };\n","'use strict';\n\nconst METAL_DATA = '__metal_data__';\n\nclass domData {\n\t/**\n\t * Gets Metal.js's data for the given element.\n\t * @param {!Element} element\n\t * @return {!Object}\n\t */\n\tstatic get(element) {\n\t\tif (!element[METAL_DATA]) {\n\t\t\telement[METAL_DATA] = {\n\t\t\t\tdelegating: {},\n\t\t\t\tlisteners: {}\n\t\t\t};\n\t\t}\n\t\treturn element[METAL_DATA];\n\t}\n}\n\nexport default domData;\n","'use strict';\n\nimport { Disposable } from 'metal';\n\n/**\n * EventHandle utility. Holds information about an event subscription, and\n * allows removing them easily.\n * EventHandle is a Disposable, but it's important to note that the\n * EventEmitter that created it is not the one responsible for disposing it.\n * That responsibility is for the code that holds a reference to it.\n * @param {!EventEmitter} emitter Emitter the event was subscribed to.\n * @param {string} event The name of the event that was subscribed to.\n * @param {!Function} listener The listener subscribed to the event.\n * @constructor\n * @extends {Disposable}\n */\nclass EventHandle extends Disposable {\n\tconstructor(emitter, event, listener) {\n\t\tsuper();\n\n\t\t/**\n\t\t * The EventEmitter instance that the event was subscribed to.\n\t\t * @type {EventEmitter}\n\t\t * @protected\n\t\t */\n\t\tthis.emitter_ = emitter;\n\n\t\t/**\n\t\t * The name of the event that was subscribed to.\n\t\t * @type {string}\n\t\t * @protected\n\t\t */\n\t\tthis.event_ = event;\n\n\t\t/**\n\t\t * The listener subscribed to the event.\n\t\t * @type {Function}\n\t\t * @protected\n\t\t */\n\t\tthis.listener_ = listener;\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.removeListener();\n\t\tthis.emitter_ = null;\n\t\tthis.listener_ = null;\n\t}\n\n\t/**\n\t * Removes the listener subscription from the emitter.\n\t */\n\tremoveListener() {\n\t\tif (!this.emitter_.isDisposed()) {\n\t\t\tthis.emitter_.removeListener(this.event_, this.listener_);\n\t\t}\n\t}\n}\n\nexport default EventHandle;\n","'use strict';\n\nimport { array, Disposable, isFunction, isString } from 'metal';\nimport EventHandle from './EventHandle';\n\n/**\n * EventEmitter utility.\n * @constructor\n * @extends {Disposable}\n */\nclass EventEmitter extends Disposable {\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds event listeners scoped by event type.\n\t\t * @type {!Object>}\n\t\t * @protected\n\t\t */\n\t\tthis.events_ = [];\n\n\t\t/**\n\t\t * The maximum number of listeners allowed for each event type. If the number\n\t\t * becomes higher than the max, a warning will be issued.\n\t\t * @type {number}\n\t\t * @protected\n\t\t */\n\t\tthis.maxListeners_ = 10;\n\n\t\t/**\n\t\t * Configuration option which determines if an event facade should be sent\n\t\t * as a param of listeners when emitting events. If set to true, the facade\n\t\t * will be passed as the first argument of the listener.\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.shouldUseFacade_ = false;\n\t}\n\n\t/**\n\t * Adds a listener to the end of the listeners array for the specified events.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @param {boolean} opt_default Flag indicating if this listener is a default\n\t * action for this event. Default actions are run last, and only if no previous\n\t * listener call `preventDefault()` on the received event facade.\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\taddListener(events, listener, opt_default) {\n\t\tthis.validateListener_(listener);\n\n\t\tevents = this.normalizeEvents_(events);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tthis.addSingleListener_(events[i], listener, opt_default);\n\t\t}\n\n\t\treturn new EventHandle(this, events, listener);\n\t}\n\n\t/**\n\t * Adds a listener to the end of the listeners array for a single event.\n\t * @param {string} event\n\t * @param {!Function} listener\n\t * @param {boolean} opt_default Flag indicating if this listener is a default\n\t * action for this event. Default actions are run last, and only if no previous\n\t * listener call `preventDefault()` on the received event facade.\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t * @param {Function=} opt_origin The original function that was added as a\n\t * listener, if there is any.\n\t * @protected\n\t */\n\taddSingleListener_(event, listener, opt_default, opt_origin) {\n\t\tthis.emit('newListener', event, listener);\n\n\t\tif (!this.events_[event]) {\n\t\t\tthis.events_[event] = [];\n\t\t}\n\t\tthis.events_[event].push({\n\t\t\tdefault: opt_default,\n\t\t\tfn: listener,\n\t\t\torigin: opt_origin\n\t\t});\n\n\t\tvar listeners = this.events_[event];\n\t\tif (listeners.length > this.maxListeners_ && !listeners.warned) {\n\t\t\tconsole.warn(\n\t\t\t\t'Possible EventEmitter memory leak detected. %d listeners added ' +\n\t\t\t\t'for event %s. Use emitter.setMaxListeners() to increase limit.',\n\t\t\t\tlisteners.length,\n\t\t\t\tevent\n\t\t\t);\n\t\t\tlisteners.warned = true;\n\t\t}\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.events_ = [];\n\t}\n\n\t/**\n\t * Execute each of the listeners in order with the supplied arguments.\n\t * @param {string} event\n\t * @param {*} opt_args [arg1], [arg2], [...]\n\t * @return {boolean} Returns true if event had listeners, false otherwise.\n\t */\n\temit(event) {\n\t\tvar args = array.slice(arguments, 1);\n\t\tvar listeners = (this.events_[event] || []).concat();\n\n\t\tvar facade;\n\t\tif (this.getShouldUseFacade()) {\n\t\t\tfacade = {\n\t\t\t\tpreventDefault: function() {\n\t\t\t\t\tfacade.preventedDefault = true;\n\t\t\t\t},\n\t\t\t\ttarget: this,\n\t\t\t\ttype: event\n\t\t\t};\n\t\t\targs.push(facade);\n\t\t}\n\n\t\tvar defaultListeners = [];\n\t\tfor (var i = 0; i < listeners.length; i++) {\n\t\t\tif (listeners[i].default) {\n\t\t\t\tdefaultListeners.push(listeners[i]);\n\t\t\t} else {\n\t\t\t\tlisteners[i].fn.apply(this, args);\n\t\t\t}\n\t\t}\n\t\tif (!facade || !facade.preventedDefault) {\n\t\t\tfor (var j = 0; j < defaultListeners.length; j++) {\n\t\t\t\tdefaultListeners[j].fn.apply(this, args);\n\t\t\t}\n\t\t}\n\n\n\t\tif (event !== '*') {\n\t\t\tthis.emit.apply(this, ['*', event].concat(args));\n\t\t}\n\n\t\treturn listeners.length > 0;\n\t}\n\n\t/**\n\t * Gets the configuration option which determines if an event facade should\n\t * be sent as a param of listeners when emitting events. If set to true, the\n\t * facade will be passed as the first argument of the listener.\n\t * @return {boolean}\n\t */\n\tgetShouldUseFacade() {\n\t\treturn this.shouldUseFacade_;\n\t}\n\n\t/**\n\t * Returns an array of listeners for the specified event.\n\t * @param {string} event\n\t * @return {Array} Array of listeners.\n\t */\n\tlisteners(event) {\n\t\treturn (this.events_[event] || []).map(listener => listener.fn);\n\t}\n\n\t/**\n\t * Adds a listener that will be invoked a fixed number of times for the\n\t * events. After each event is triggered the specified amount of times, the\n\t * listener is removed for it.\n\t * @param {!(Array|string)} events\n\t * @param {number} amount The amount of times this event should be listened\n\t * to.\n\t * @param {!Function} listener\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\tmany(events, amount, listener) {\n\t\tevents = this.normalizeEvents_(events);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tthis.many_(events[i], amount, listener);\n\t\t}\n\n\t\treturn new EventHandle(this, events, listener);\n\t}\n\n\t/**\n\t * Adds a listener that will be invoked a fixed number of times for a single\n\t * event. After the event is triggered the specified amount of times, the\n\t * listener is removed.\n\t * @param {string} event\n\t * @param {number} amount The amount of times this event should be listened\n\t * to.\n\t * @param {!Function} listener\n\t * @protected\n\t */\n\tmany_(event, amount, listener) {\n\t\tvar self = this;\n\n\t\tif (amount <= 0) {\n\t\t\treturn;\n\t\t}\n\n\t\tfunction handlerInternal() {\n\t\t\tif (--amount === 0) {\n\t\t\t\tself.removeListener(event, handlerInternal);\n\t\t\t}\n\t\t\tlistener.apply(self, arguments);\n\t\t}\n\n\t\tself.addSingleListener_(event, handlerInternal, false, listener);\n\t}\n\n\t/**\n\t * Checks if a listener object matches the given listener function. To match,\n\t * it needs to either point to that listener or have it as its origin.\n\t * @param {!Object} listenerObj\n\t * @param {!Function} listener\n\t * @return {boolean}\n\t * @protected\n\t */\n\tmatchesListener_(listenerObj, listener) {\n\t\treturn listenerObj.fn === listener ||\n\t\t\t(listenerObj.origin && listenerObj.origin === listener);\n\t}\n\n\t/**\n\t * Converts the parameter to an array if only one event is given.\n\t * @param {!(Array|string)} events\n\t * @return {!Array}\n\t * @protected\n\t */\n\tnormalizeEvents_(events) {\n\t\treturn isString(events) ? [events] : events;\n\t}\n\n\t/**\n\t * Removes a listener for the specified events.\n\t * Caution: changes array indices in the listener array behind the listener.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\toff(events, listener) {\n\t\tthis.validateListener_(listener);\n\n\t\tevents = this.normalizeEvents_(events);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tvar listenerObjs = this.events_[events[i]] || [];\n\t\t\tthis.removeMatchingListenerObjs_(listenerObjs, listener);\n\t\t}\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds a listener to the end of the listeners array for the specified events.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\ton() {\n\t\treturn this.addListener.apply(this, arguments);\n\t}\n\n\t/**\n\t * Adds a one time listener for the events. This listener is invoked only the\n\t * next time each event is fired, after which it is removed.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\tonce(events, listener) {\n\t\treturn this.many(events, 1, listener);\n\t}\n\n\t/**\n\t * Removes all listeners, or those of the specified events. It's not a good\n\t * idea to remove listeners that were added elsewhere in the code,\n\t * especially when it's on an emitter that you didn't create.\n\t * @param {(Array|string)=} opt_events\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tremoveAllListeners(opt_events) {\n\t\tif (opt_events) {\n\t\t\tvar events = this.normalizeEvents_(opt_events);\n\t\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\t\tthis.events_[events[i]] = null;\n\t\t\t}\n\t\t} else {\n\t\t\tthis.events_ = {};\n\t\t}\n\t\treturn this;\n\t}\n\n\t/**\n\t * Removes all listener objects from the given array that match the given\n\t * listener function.\n\t * @param {!Array.} listenerObjs\n\t * @param {!Function} listener\n\t * @protected\n\t */\n\tremoveMatchingListenerObjs_(listenerObjs, listener) {\n\t\tfor (var i = listenerObjs.length - 1; i >= 0; i--) {\n\t\t\tif (this.matchesListener_(listenerObjs[i], listener)) {\n\t\t\t\tlistenerObjs.splice(i, 1);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes a listener for the specified events.\n\t * Caution: changes array indices in the listener array behind the listener.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tremoveListener() {\n\t\treturn this.off.apply(this, arguments);\n\t}\n\n\t/**\n\t * By default EventEmitters will print a warning if more than 10 listeners\n\t * are added for a particular event. This is a useful default which helps\n\t * finding memory leaks. Obviously not all Emitters should be limited to 10.\n\t * This function allows that to be increased. Set to zero for unlimited.\n\t * @param {number} max The maximum number of listeners.\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tsetMaxListeners(max) {\n\t\tthis.maxListeners_ = max;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the configuration option which determines if an event facade should\n\t * be sent as a param of listeners when emitting events. If set to true, the\n\t * facade will be passed as the first argument of the listener.\n\t * @param {boolean} shouldUseFacade\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tsetShouldUseFacade(shouldUseFacade) {\n\t\tthis.shouldUseFacade_ = shouldUseFacade;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Checks if the given listener is valid, throwing an exception when it's not.\n\t * @param {*} listener\n\t * @protected\n\t */\n\tvalidateListener_(listener) {\n\t\tif (!isFunction(listener)) {\n\t\t\tthrow new TypeError('Listener must be a function');\n\t\t}\n\t}\n}\n\nexport default EventEmitter;\n","'use strict';\n\nimport { array, object, Disposable } from 'metal';\n\n/**\n * EventEmitterProxy utility. It's responsible for linking two EventEmitter\n * instances together, emitting events from the first emitter through the\n * second one. That means that listening to a supported event on the target\n * emitter will mean listening to it on the origin emitter as well.\n * @param {EventEmitter} originEmitter Events originated on this emitter\n * will be fired for the target emitter's listeners as well.\n * @param {EventEmitter} targetEmitter Event listeners attached to this emitter\n * will also be triggered when the event is fired by the origin emitter.\n * @param {Object} opt_blacklist Optional blacklist of events that should not be\n * proxied.\n * @constructor\n * @extends {Disposable}\n */\nclass EventEmitterProxy extends Disposable {\n\tconstructor(originEmitter, targetEmitter, opt_blacklist, opt_whitelist) {\n\t\tsuper();\n\n\t\t/**\n\t\t * Map of events that should not be proxied.\n\t\t * @type {Object}\n\t\t * @protected\n\t\t */\n\t\tthis.blacklist_ = object.mixin({\n\t\t\tnewListener: true\n\t\t}, opt_blacklist);\n\n\t\t/**\n\t\t * The origin emitter. This emitter's events will be proxied through the\n\t\t * target emitter.\n\t\t * @type {EventEmitter}\n\t\t * @protected\n\t\t */\n\t\tthis.originEmitter_ = originEmitter;\n\n\t\t/**\n\t\t * A list of events that are pending to be listened by an actual origin\n\t\t * emitter. Events are stored here when the origin doesn't exist, so they\n\t\t * can be set on a new origin when one is set.\n\t\t * @type {!Array}\n\t\t * @protected\n\t\t */\n\t\tthis.pendingEvents_ = [];\n\n\t\t/**\n\t\t * Holds a map of events from the origin emitter that are already being proxied.\n\t\t * @type {Object}\n\t\t * @protected\n\t\t */\n\t\tthis.proxiedEvents_ = {};\n\n\t\t/**\n\t\t * The target emitter. This emitter will emit all events that come from\n\t\t * the origin emitter.\n\t\t * @type {EventEmitter}\n\t\t * @protected\n\t\t */\n\t\tthis.targetEmitter_ = targetEmitter;\n\n\t\t/**\n\t\t * Map of events that should be proxied. If whitelist is set blacklist is ignored.\n\t\t * @type {Object}\n\t\t * @protected\n\t\t */\n\t\tthis.whitelist_ = opt_whitelist;\n\n\t\tthis.startProxy_();\n\t}\n\n\t/**\n\t * Adds the given listener for the given event.\n\t * @param {string} event\n\t * @param {!function()} listener\n\t * @return {!EventHandle} The listened event's handle.\n\t * @protected\n\t */\n\taddListener_(event, listener) {\n\t\treturn this.originEmitter_.on(event, listener);\n\t}\n\n\t/**\n\t * Adds the proxy listener for the given event.\n\t * @param {string} event\n\t * @return {!EventHandle} The listened event's handle.\n\t * @protected\n\t */\n\taddListenerForEvent_(event) {\n\t\treturn this.addListener_(event, this.emitOnTarget_.bind(this, event));\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisposeInternal() {\n\t\tthis.removeListeners_();\n\t\tthis.proxiedEvents_ = null;\n\t\tthis.originEmitter_ = null;\n\t\tthis.targetEmitter_ = null;\n\t}\n\n\t/**\n\t * Emits the specified event type on the target emitter.\n\t * @param {string} eventType\n\t * @protected\n\t */\n\temitOnTarget_(eventType) {\n\t\tvar args = [eventType].concat(array.slice(arguments, 1));\n\t\tthis.targetEmitter_.emit.apply(this.targetEmitter_, args);\n\t}\n\n\t/**\n\t * Proxies the given event from the origin to the target emitter.\n\t * @param {string} event\n\t */\n\tproxyEvent(event) {\n\t\tif (this.shouldProxyEvent_(event)) {\n\t\t\tthis.tryToAddListener_(event);\n\t\t}\n\t}\n\n\t/**\n\t * Removes the proxy listener for all events.\n\t * @protected\n\t */\n\tremoveListeners_() {\n\t\tvar events = Object.keys(this.proxiedEvents_);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tthis.proxiedEvents_[events[i]].removeListener();\n\t\t}\n\t\tthis.proxiedEvents_ = {};\n\t\tthis.pendingEvents_ = [];\n\t}\n\n\t/**\n\t * Changes the origin emitter. This automatically detaches any events that\n\t * were already being proxied from the previous emitter, and starts proxying\n\t * them on the new emitter instead.\n\t * @param {!EventEmitter} originEmitter\n\t */\n\tsetOriginEmitter(originEmitter) {\n\t\tvar events = this.originEmitter_ ?\n\t\t\tObject.keys(this.proxiedEvents_) :\n\t\t\tthis.pendingEvents_;\n\t\tthis.removeListeners_();\n\t\tthis.originEmitter_ = originEmitter;\n\t\tevents.forEach(event => this.proxyEvent(event));\n\t}\n\n\t/**\n\t * Checks if the given event should be proxied.\n\t * @param {string} event\n\t * @return {boolean}\n\t * @protected\n\t */\n\tshouldProxyEvent_(event) {\n\t\tif (this.whitelist_ && !this.whitelist_[event]) {\n\t\t\treturn false;\n\t\t}\n\t\tif (this.blacklist_[event]) {\n\t\t\treturn false;\n\t\t}\n\t\treturn !this.proxiedEvents_[event];\n\t}\n\n\t/**\n\t * Starts proxying all events from the origin to the target emitter.\n\t * @protected\n\t */\n\tstartProxy_() {\n\t\tthis.targetEmitter_.on('newListener', this.proxyEvent.bind(this));\n\t}\n\n\t/**\n\t * Adds a listener to the origin emitter, if it exists. Otherwise, stores\n\t * the pending listener so it can be used on a future origin emitter.\n\t * @param {string} event\n\t * @protected\n\t */\n\ttryToAddListener_(event) {\n\t\tif (this.originEmitter_) {\n\t\t\tthis.proxiedEvents_[event] = this.addListenerForEvent_(event);\n\t\t} else {\n\t\t\tthis.pendingEvents_.push(event);\n\t\t}\n\t}\n}\n\nexport default EventEmitterProxy;\n","'use strict';\n\nimport { Disposable } from 'metal';\n\n/**\n * EventHandler utility. It's useful for easily removing a group of\n * listeners from different EventEmitter instances.\n * @constructor\n * @extends {Disposable}\n */\nclass EventHandler extends Disposable {\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * An array that holds the added event handles, so the listeners can be\n\t\t * removed later.\n\t\t * @type {Array.}\n\t\t * @protected\n\t\t */\n\t\tthis.eventHandles_ = [];\n\t}\n\n\t/**\n\t * Adds event handles to be removed later through the `removeAllListeners`\n\t * method.\n\t * @param {...(!EventHandle)} var_args\n\t */\n\tadd() {\n\t\tfor (var i = 0; i < arguments.length; i++) {\n\t\t\tthis.eventHandles_.push(arguments[i]);\n\t\t}\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.eventHandles_ = null;\n\t}\n\n\t/**\n\t * Removes all listeners that have been added through the `add` method.\n\t */\n\tremoveAllListeners() {\n\t\tfor (var i = 0; i < this.eventHandles_.length; i++) {\n\t\t\tthis.eventHandles_[i].removeListener();\n\t\t}\n\n\t\tthis.eventHandles_ = [];\n\t}\n}\n\nexport default EventHandler;\n","'use strict';\n\nimport { registerCustomEvent } from './dom';\nimport features from './features';\n\nvar mouseEventMap = {\n\tmouseenter: 'mouseover',\n\tmouseleave: 'mouseout',\n\tpointerenter: 'pointerover',\n\tpointerleave: 'pointerout'\n};\nObject.keys(mouseEventMap).forEach(function(eventName) {\n\tregisterCustomEvent(eventName, {\n\t\tdelegate: true,\n\t\thandler: function(callback, event) {\n\t\t\tvar related = event.relatedTarget;\n\t\t\tvar target = event.delegateTarget;\n\t\t\tif (!related || (related !== target && !target.contains(related))) {\n\t\t\t\tevent.customType = eventName;\n\t\t\t\treturn callback(event);\n\t\t\t}\n\t\t},\n\t\toriginalEvent: mouseEventMap[eventName]\n\t});\n});\n\nvar animationEventMap = {\n\tanimation: 'animationend',\n\ttransition: 'transitionend'\n};\nObject.keys(animationEventMap).forEach(function(eventType) {\n\tvar eventName = animationEventMap[eventType];\n\tregisterCustomEvent(eventName, {\n\t\tevent: true,\n\t\tdelegate: true,\n\t\thandler: function(callback, event) {\n\t\t\tevent.customType = eventName;\n\t\t\treturn callback(event);\n\t\t},\n\t\toriginalEvent: features.checkAnimationEventName()[eventType]\n\t});\n});\n","'use strict';\n\nimport { array, isString } from 'metal';\nimport domData from './domData';\nimport { EventHandle } from 'metal-events';\n\n/**\n * This is a special EventHandle, that is responsible for dom delegated events\n * (only the ones that receive a target element, not a selector string).\n * @extends {EventHandle}\n */\nclass DomDelegatedEventHandle extends EventHandle {\n\t/**\n\t * The constructor for `DomDelegatedEventHandle`.\n\t * @param {!Event} emitter Element the event was subscribed to.\n\t * @param {string} event The name of the event that was subscribed to.\n\t * @param {!Function} listener The listener subscribed to the event.\n\t * @param {string=} opt_selector An optional selector used when delegating\n\t * the event.\n\t * @constructor\n\t */\n\tconstructor(emitter, event, listener, opt_selector) {\n\t\tsuper(emitter, event, listener);\n\t\tthis.selector_ = opt_selector;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveListener() {\n\t\tvar data = domData.get(this.emitter_);\n\t\tvar selector = this.selector_;\n\t\tvar arr = isString(selector) ? data.delegating[this.event_].selectors : data.listeners;\n\t\tvar key = isString(selector) ? selector : this.event_;\n\n\t\tarray.remove(arr[key] || [], this.listener_);\n\t\tif (arr[key] && arr[key].length === 0) {\n\t\t\tdelete arr[key];\n\t\t}\n\t}\n}\n\nexport default DomDelegatedEventHandle;\n","'use strict';\n\nimport { EventHandle } from 'metal-events';\n\n/**\n * This is a special EventHandle, that is responsible for dom events, instead\n * of EventEmitter events.\n * @extends {EventHandle}\n */\nclass DomEventHandle extends EventHandle {\n\t/**\n\t * The constructor for `DomEventHandle`.\n\t * @param {!EventEmitter} emitter Emitter the event was subscribed to.\n\t * @param {string} event The name of the event that was subscribed to.\n\t * @param {!Function} listener The listener subscribed to the event.\n\t * @param {boolean} opt_capture Flag indicating if listener should be triggered\n\t * during capture phase, instead of during the bubbling phase. Defaults to false.\n\t * @constructor\n\t */\n\tconstructor(emitter, event, listener, opt_capture) {\n\t\tsuper(emitter, event, listener);\n\t\tthis.capture_ = opt_capture;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveListener() {\n\t\tthis.emitter_.removeEventListener(this.event_, this.listener_, this.capture_);\n\t}\n}\n\nexport default DomEventHandle;\n","'use strict';\n\nimport { isDef, isDocument, isElement, isObject, isString, object } from 'metal';\nimport domData from './domData';\nimport DomDelegatedEventHandle from './DomDelegatedEventHandle';\nimport DomEventHandle from './DomEventHandle';\n\nconst elementsByTag_ = {};\nexport const customEvents = {};\n\nconst NEXT_TARGET = '__metal_next_target__';\nconst USE_CAPTURE = {\n\tblur: true,\n\terror: true,\n\tfocus: true,\n\tinvalid: true,\n\tload: true,\n\tscroll: true\n};\n\n/**\n * Adds the requested CSS classes to an element.\n * @param {!Element|!Nodelist} elements The element or elements to add CSS classes to.\n * @param {string} classes CSS classes to add.\n */\nexport function addClasses(elements, classes) {\n\tif (!isObject(elements) || !isString(classes)) {\n\t\treturn;\n\t}\n\n\tif (!elements.length) {\n\t\telements = [elements];\n\t}\n\n\tfor (let i = 0; i < elements.length; i++) {\n\t\tif ('classList' in elements[i]) {\n\t\t\taddClassesWithNative_(elements[i], classes);\n\t\t} else {\n\t\t\taddClassesWithoutNative_(elements[i], classes);\n\t\t}\n\t}\n}\n\n/**\n * Adds the requested CSS classes to an element using classList.\n * @param {!Element} element The element to add CSS classes to.\n * @param {string} classes CSS classes to add.\n * @private\n */\nfunction addClassesWithNative_(element, classes) {\n\tclasses.split(' ').forEach(function(className) {\n\t\tif (className) {\n\t\t\telement.classList.add(className);\n\t\t}\n\t});\n}\n\n/**\n * Adds the requested CSS classes to an element without using classList.\n * @param {!Element} element The element to add CSS classes to.\n * @param {string} classes CSS classes to add.\n * @private\n */\nfunction addClassesWithoutNative_(element, classes) {\n\tvar elementClassName = ' ' + element.className + ' ';\n\tvar classesToAppend = '';\n\n\tclasses = classes.split(' ');\n\n\tfor (var i = 0; i < classes.length; i++) {\n\t\tvar className = classes[i];\n\n\t\tif (elementClassName.indexOf(' ' + className + ' ') === -1) {\n\t\t\tclassesToAppend += ' ' + className;\n\t\t}\n\t}\n\n\tif (classesToAppend) {\n\t\telement.className = element.className + classesToAppend;\n\t}\n}\n\n/**\n * Adds an event listener to the given element, to be triggered via delegate.\n * @param {!Element} element\n * @param {string} eventName\n * @param {!function()} listener\n * @private\n */\nfunction addElementListener_(element, eventName, listener) {\n\tvar data = domData.get(element);\n\taddToArr_(data.listeners, eventName, listener);\n}\n\n/**\n * Adds an event listener to the given element, to be triggered via delegate\n * selectors.\n * @param {!Element} element\n * @param {string} eventName\n * @param {string} selector\n * @param {!function()} listener\n * @private\n */\nfunction addSelectorListener_(element, eventName, selector, listener) {\n\tvar data = domData.get(element);\n\taddToArr_(data.delegating[eventName].selectors, selector, listener);\n}\n\n/**\n * Adds a value to an array inside an object, creating it first if it doesn't\n * yet exist.\n * @param {!Array} arr\n * @param {string} key\n * @param {*} value\n * @private\n */\nfunction addToArr_(arr, key, value) {\n\tif (!arr[key]) {\n\t\tarr[key] = [];\n\t}\n\tarr[key].push(value);\n}\n\n/**\n * Attaches a delegate listener, unless there's already one attached.\n * @param {!Element} element\n * @param {string} eventName\n * @private\n */\nfunction attachDelegateEvent_(element, eventName) {\n\tvar data = domData.get(element);\n\tif (!data.delegating[eventName]) {\n\t\tdata.delegating[eventName] = {\n\t\t\thandle: on(\n\t\t\t\telement,\n\t\t\t\teventName,\n\t\t\t\thandleDelegateEvent_,\n\t\t\t\t!!USE_CAPTURE[eventName]\n\t\t\t),\n\t\t\tselectors: {}\n\t\t};\n\t}\n}\n\n/**\n * Gets the closest element up the tree from the given element (including\n * itself) that matches the specified selector, or null if none match.\n * @param {Element} element\n * @param {string} selector\n * @return {Element}\n */\nexport function closest(element, selector) {\n\twhile (element && !match(element, selector)) {\n\t\telement = element.parentNode;\n\t}\n\treturn element;\n}\n\n/**\n * Appends a child node with text or other nodes to a parent node. If\n * child is a HTML string it will be automatically converted to a document\n * fragment before appending it to the parent.\n * @param {!Element} parent The node to append nodes to.\n * @param {!(Element|NodeList|string)} child The thing to append to the parent.\n * @return {!Element} The appended child.\n */\nexport function append(parent, child) {\n\tif (isString(child)) {\n\t\tchild = buildFragment(child);\n\t}\n\tif (child instanceof NodeList) {\n\t\tvar childArr = Array.prototype.slice.call(child);\n\t\tfor (var i = 0; i < childArr.length; i++) {\n\t\t\tparent.appendChild(childArr[i]);\n\t\t}\n\t} else {\n\t\tparent.appendChild(child);\n\t}\n\treturn child;\n}\n\n/**\n * Helper for converting a HTML string into a document fragment.\n * @param {string} htmlString The HTML string to convert.\n * @return {!Element} The resulting document fragment.\n */\nexport function buildFragment(htmlString) {\n\tvar tempDiv = document.createElement('div');\n\ttempDiv.innerHTML = '
' + htmlString;\n\ttempDiv.removeChild(tempDiv.firstChild);\n\n\tvar fragment = document.createDocumentFragment();\n\twhile (tempDiv.firstChild) {\n\t\tfragment.appendChild(tempDiv.firstChild);\n\t}\n\treturn fragment;\n}\n\n/**\n * Checks if the first element contains the second one.\n * @param {!Element} element1\n * @param {!Element} element2\n * @return {boolean}\n */\nexport function contains(element1, element2) {\n\tif (isDocument(element1)) {\n\t\t// document.contains is not defined on IE9, so call it on documentElement instead.\n\t\treturn element1.documentElement.contains(element2);\n\t} else {\n\t\treturn element1.contains(element2);\n\t}\n}\n\n/**\n * Listens to the specified event on the given DOM element, but only calls the\n * given callback listener when it's triggered by elements that match the\n * given selector or target element.\n * @param {!Element} element The DOM element the event should be listened on.\n * @param {string} eventName The name of the event to listen to.\n * @param {!Element|string} selectorOrTarget Either an element or css selector\n * that should match the event for the listener to be triggered.\n * @param {!function(!Object)} callback Function to be called when the event\n * is triggered. It will receive the normalized event object.\n * @param {boolean=} opt_default Optional flag indicating if this is a default\n * listener. That means that it would only be executed after all non\n * default listeners, and only if the event isn't prevented via\n * `preventDefault`.\n * @return {!EventHandle} Can be used to remove the listener.\n */\nexport function delegate(element, eventName, selectorOrTarget, callback, opt_default) {\n\tvar customConfig = customEvents[eventName];\n\tif (customConfig && customConfig.delegate) {\n\t\teventName = customConfig.originalEvent;\n\t\tcallback = customConfig.handler.bind(customConfig, callback);\n\t}\n\n\tif (opt_default) {\n\t\t// Wrap callback so we don't set property directly on it.\n\t\tcallback = callback.bind();\n\t\tcallback.defaultListener_ = true;\n\t}\n\n\tattachDelegateEvent_(element, eventName);\n\tif (isString(selectorOrTarget)) {\n\t\taddSelectorListener_(element, eventName, selectorOrTarget, callback);\n\t} else {\n\t\taddElementListener_(selectorOrTarget, eventName, callback);\n\t}\n\n\treturn new DomDelegatedEventHandle(\n\t\tisString(selectorOrTarget) ? element : selectorOrTarget,\n\t\teventName,\n\t\tcallback,\n\t\tisString(selectorOrTarget) ? selectorOrTarget : null\n\t);\n}\n\n/**\n * Verifies if the element is able to trigger the Click event,\n * simulating browsers behaviour, avoiding event listeners to be called by triggerEvent method.\n * @param {Element} node Element to be checked.\n * @param {string} eventName The event name.\n * @private\n */\nfunction isAbleToInteractWith_(node, eventName, opt_eventObj) {\n\tif (opt_eventObj && eventName === 'click' && opt_eventObj.button === 2) {\n\t\t// Firefox triggers \"click\" events on the document for right clicks. This\n\t\t// causes our delegate logic to trigger it for regular elements too, which\n\t\t// shouldn't happen. Ignoring them here.\n\t\treturn false;\n\t}\n\n var matchesSelector = ['BUTTON', 'INPUT', 'SELECT', 'TEXTAREA', 'FIELDSET'];\n if (eventName === 'click' && matchesSelector.indexOf(node.tagName) > -1) {\n return !(node.disabled || parent(node, 'fieldset[disabled]'));\n }\n return true;\n}\n\n/**\n * Inserts node in document as last element.\n * @param {Element} node Element to remove children from.\n */\nexport function enterDocument(node) {\n\tnode && append(document.body, node);\n}\n\n/**\n * Removes node from document.\n * @param {Element} node Element to remove children from.\n */\nexport function exitDocument(node) {\n\tif (node && node.parentNode) {\n\t\tnode.parentNode.removeChild(node);\n\t}\n}\n\n/**\n * This is called when an event is triggered by a delegate listener. All\n * matching listeners of this event type from `target` to `currentTarget` will\n * be triggered.\n * @param {!Event} event The event payload.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction handleDelegateEvent_(event) {\n\tnormalizeDelegateEvent_(event);\n\tvar currElement = isDef(event[NEXT_TARGET]) ?\n\t\tevent[NEXT_TARGET] :\n\t\tevent.target;\n\tvar ret = true;\n\tvar container = event.currentTarget;\n\tvar limit = event.currentTarget.parentNode;\n\tvar defFns = [];\n\n\tret &= triggerDelegatedListeners_(container, currElement, event, limit, defFns);\n\tret &= triggerDefaultDelegatedListeners_(defFns, event);\n\n\tevent.delegateTarget = null;\n\tevent[NEXT_TARGET] = limit;\n\treturn ret;\n}\n\n/**\n * Checks if the given element has the requested css class.\n * @param {!Element} element\n * @param {string} className\n * @return {boolean}\n */\nexport function hasClass(element, className) {\n\tif ('classList' in element) {\n\t\treturn hasClassWithNative_(element, className);\n\t} else {\n\t\treturn hasClassWithoutNative_(element, className);\n\t}\n}\n\n/**\n * Checks if the given element has the requested css class using classList.\n * @param {!Element} element\n * @param {string} className\n * @return {boolean}\n * @private\n */\nfunction hasClassWithNative_(element, className) {\n\treturn element.classList.contains(className);\n}\n\n/**\n * Checks if the given element has the requested css class without using classList.\n * @param {!Element} element\n * @param {string} className\n * @return {boolean}\n * @private\n */\nfunction hasClassWithoutNative_(element, className) {\n\treturn (' ' + element.className + ' ').indexOf(' ' + className + ' ') >= 0;\n}\n\n/**\n * Checks if the given element is empty or not.\n * @param {!Element} element\n * @return {boolean}\n */\nexport function isEmpty(element) {\n\treturn element.childNodes.length === 0;\n}\n\n/**\n * Check if an element matches a given selector.\n * @param {Element} element\n * @param {string} selector\n * @return {boolean}\n */\nexport function match(element, selector) {\n\tif (!element || element.nodeType !== 1) {\n\t\treturn false;\n\t}\n\n\tvar p = Element.prototype;\n\tvar m = p.matches || p.webkitMatchesSelector || p.mozMatchesSelector || p.msMatchesSelector || p.oMatchesSelector;\n\tif (m) {\n\t\treturn m.call(element, selector);\n\t}\n\n\treturn matchFallback_(element, selector);\n}\n\n/**\n * Check if an element matches a given selector, using an internal implementation\n * instead of calling existing javascript functions.\n * @param {Element} element\n * @param {string} selector\n * @return {boolean}\n * @private\n */\nfunction matchFallback_(element, selector) {\n\tvar nodes = document.querySelectorAll(selector, element.parentNode);\n\tfor (var i = 0; i < nodes.length; ++i) {\n\t\tif (nodes[i] === element) {\n\t\t\treturn true;\n\t\t}\n\t}\n\treturn false;\n}\n\n/**\n * Returns the next sibling of the given element that matches the specified\n * selector, or null if there is none.\n * @param {!Element} element\n * @param {?string} selector\n */\nexport function next(element, selector) {\n\tdo {\n\t\telement = element.nextSibling;\n\t\tif (element && match(element, selector)) {\n\t\t\treturn element;\n\t\t}\n\t} while (element);\n\treturn null;\n}\n\n/**\n * Normalizes the event payload for delegate listeners.\n * @param {!Event} event\n * @private\n */\nfunction normalizeDelegateEvent_(event) {\n\tevent.stopPropagation = stopPropagation_;\n\tevent.stopImmediatePropagation = stopImmediatePropagation_;\n}\n\n/**\n * Listens to the specified event on the given DOM element. This function normalizes\n * DOM event payloads and functions so they'll work the same way on all supported\n * browsers.\n * @param {!Element|string} element The DOM element to listen to the event on, or\n * a selector that should be delegated on the entire document.\n * @param {string} eventName The name of the event to listen to.\n * @param {!function(!Object)} callback Function to be called when the event is\n * triggered. It will receive the normalized event object.\n * @param {boolean} opt_capture Flag indicating if listener should be triggered\n * during capture phase, instead of during the bubbling phase. Defaults to false.\n * @return {!DomEventHandle} Can be used to remove the listener.\n */\nexport function on(element, eventName, callback, opt_capture) {\n\tif (isString(element)) {\n\t\treturn delegate(document, eventName, element, callback);\n\t}\n\tvar customConfig = customEvents[eventName];\n\tif (customConfig && customConfig.event) {\n\t\teventName = customConfig.originalEvent;\n\t\tcallback = customConfig.handler.bind(customConfig, callback);\n\t}\n\telement.addEventListener(eventName, callback, opt_capture);\n\treturn new DomEventHandle(element, eventName, callback, opt_capture);\n}\n\n/**\n * Listens to the specified event on the given DOM element once. This\n * function normalizes DOM event payloads and functions so they'll work the\n * same way on all supported browsers.\n * @param {!Element} element The DOM element to listen to the event on.\n * @param {string} eventName The name of the event to listen to.\n * @param {!function(!Object)} callback Function to be called when the event\n * is triggered. It will receive the normalized event object.\n * @return {!DomEventHandle} Can be used to remove the listener.\n */\nexport function once(element, eventName, callback) {\n\tvar domEventHandle = on(element, eventName, function() {\n\t\tdomEventHandle.removeListener();\n\t\treturn callback.apply(this, arguments);\n\t});\n\treturn domEventHandle;\n}\n\n/**\n * Gets the first parent from the given element that matches the specified\n * selector, or null if none match.\n * @param {!Element} element\n * @param {string} selector\n * @return {Element}\n */\nexport function parent(element, selector) {\n\treturn closest(element.parentNode, selector);\n}\n\n/**\n * Registers a custom event.\n * @param {string} eventName The name of the custom event.\n * @param {!Object} customConfig An object with information about how the event\n * should be handled.\n */\nexport function registerCustomEvent(eventName, customConfig) {\n\tcustomEvents[eventName] = customConfig;\n}\n\n/**\n * Removes all the child nodes on a DOM node.\n * @param {Element} node Element to remove children from.\n */\nexport function removeChildren(node) {\n\tvar child;\n\twhile ((child = node.firstChild)) {\n\t\tnode.removeChild(child);\n\t}\n}\n\n/**\n * Removes the requested CSS classes from an element.\n * @param {!Element|!NodeList} elements The element or elements to remove CSS classes from.\n * @param {string} classes CSS classes to remove.\n */\nexport function removeClasses(elements, classes) {\n\tif (!isObject(elements) || !isString(classes)) {\n\t\treturn;\n\t}\n\n\tif (!elements.length) {\n\t\telements = [elements];\n\t}\n\n\tfor (let i = 0; i < elements.length; i++) {\n\t\tif ('classList' in elements[i]) {\n\t\t\tremoveClassesWithNative_(elements[i], classes);\n\t\t} else {\n\t\t\tremoveClassesWithoutNative_(elements[i], classes);\n\t\t}\n\t}\n}\n\n/**\n * Removes the requested CSS classes from an element using classList.\n * @param {!Element} element The element to remove CSS classes from.\n * @param {string} classes CSS classes to remove.\n * @private\n */\nfunction removeClassesWithNative_(element, classes) {\n\tclasses.split(' ').forEach(function(className) {\n\t\tif (className) {\n\t\t\telement.classList.remove(className);\n\t\t}\n\t});\n}\n\n/**\n * Removes the requested CSS classes from an element without using classList.\n * @param {!Element} element The element to remove CSS classes from.\n * @param {string} classes CSS classes to remove.\n * @private\n */\nfunction removeClassesWithoutNative_(element, classes) {\n\tvar elementClassName = ' ' + element.className + ' ';\n\n\tclasses = classes.split(' ');\n\n\tfor (var i = 0; i < classes.length; i++) {\n\t\telementClassName = elementClassName.replace(' ' + classes[i] + ' ', ' ');\n\t}\n\n\telement.className = elementClassName.trim();\n}\n\n/**\n * Replaces the first element with the second.\n * @param {Element} element1\n * @param {Element} element2\n */\nexport function replace(element1, element2) {\n\tif (element1 && element2 && element1 !== element2 && element1.parentNode) {\n\t\telement1.parentNode.insertBefore(element2, element1);\n\t\telement1.parentNode.removeChild(element1);\n\t}\n}\n\n/**\n * The function that replaces `stopImmediatePropagation_` for events.\n * @private\n */\nfunction stopImmediatePropagation_() {\n\tconst event = this; // jshint ignore:line\n\tevent.stopped = true;\n\tevent.stoppedImmediate = true;\n\tEvent.prototype.stopImmediatePropagation.call(event);\n}\n\n/**\n * The function that replaces `stopPropagation` for events.\n * @private\n */\nfunction stopPropagation_() {\n\tconst event = this; // jshint ignore:line\n\tevent.stopped = true;\n\tEvent.prototype.stopPropagation.call(event);\n}\n\n/**\n * Checks if the given element supports the given event type.\n * @param {!Element|string} element The DOM element or element tag name to check.\n * @param {string} eventName The name of the event to check.\n * @return {boolean}\n */\nexport function supportsEvent(element, eventName) {\n\tif (customEvents[eventName]) {\n\t\treturn true;\n\t}\n\n\tif (isString(element)) {\n\t\tif (!elementsByTag_[element]) {\n\t\t\telementsByTag_[element] = document.createElement(element);\n\t\t}\n\t\telement = elementsByTag_[element];\n\t}\n\treturn 'on' + eventName in element;\n}\n\n/**\n * This triggers all default matched delegated listeners of a given event type.\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * @param {!Event} event\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerDefaultDelegatedListeners_(defFns, event) {\n\tlet ret = true;\n\n\tfor (var i = 0; i < defFns.length && !event.defaultPrevented; i++) {\n\t\tevent.delegateTarget = defFns[i].element;\n\t\tret &= defFns[i].fn(event);\n\t}\n\n\treturn ret;\n}\n\n/**\n * This triggers all matched delegated listeners of a given event type when its\n * delegated target is able to interact.\n * @param {!Element} container\n * @param {!Element} currElement\n * @param {!Event} event\n * @param {!Element} limit the fartest parent of the given element\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * of running them.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerDelegatedListeners_(container, currElement, event, limit, defaultFns) {\n\tlet ret = true;\n\n\twhile (currElement && currElement !== limit && !event.stopped) {\n\t\tif (isAbleToInteractWith_(currElement, event.type, event)) {\n\t\t\tevent.delegateTarget = currElement;\n\t\t\tret &= triggerMatchedListeners_(container, currElement, event, defaultFns);\n\t\t}\n\t\tcurrElement = currElement.parentNode;\n\t}\n\n\treturn ret;\n}\n\n/**\n * Converts the given argument to a DOM element. Strings are assumed to\n * be selectors, and so a matched element will be returned. If the arg\n * is already a DOM element it will be the return value.\n * @param {string|Element|Document} selectorOrElement\n * @return {Element} The converted element, or null if none was found.\n */\nexport function toElement(selectorOrElement) {\n\tif (isElement(selectorOrElement) || isDocument(selectorOrElement)) {\n\t\treturn selectorOrElement;\n\t} else if (isString(selectorOrElement)) {\n\t\tif (selectorOrElement[0] === '#' && selectorOrElement.indexOf(' ') === -1) {\n\t\t\treturn document.getElementById(selectorOrElement.substr(1));\n\t\t} else {\n\t\t\treturn document.querySelector(selectorOrElement);\n\t\t}\n\t} else {\n\t\treturn null;\n\t}\n}\n\n/**\n * Adds or removes one or more classes from an element. If any of the classes\n * is present, it will be removed from the element, or added otherwise.\n * @param {!Element} element The element which classes will be toggled.\n * @param {string} classes The classes which have to added or removed from the element.\n */\nexport function toggleClasses(element, classes) {\n\tif (!isObject(element) || !isString(classes)) {\n\t\treturn;\n\t}\n\n\tif ('classList' in element) {\n\t\ttoggleClassesWithNative_(element, classes);\n\t} else {\n\t\ttoggleClassesWithoutNative_(element, classes);\n\t}\n}\n\n/**\n * Adds or removes one or more classes from an element using classList.\n * If any of the classes is present, it will be removed from the element,\n * or added otherwise.\n * @param {!Element} element The element which classes will be toggled.\n * @param {string} classes The classes which have to added or removed from the element.\n * @private\n */\nfunction toggleClassesWithNative_(element, classes) {\n\tclasses.split(' ').forEach(function(className) {\n\t\telement.classList.toggle(className);\n\t});\n}\n\n/**\n * Adds or removes one or more classes from an element without using classList.\n * If any of the classes is present, it will be removed from the element,\n * or added otherwise.\n * @param {!Element} element The element which classes will be toggled.\n * @param {string} classes The classes which have to added or removed from the element.\n * @private\n */\nfunction toggleClassesWithoutNative_(element, classes) {\n\tvar elementClassName = ' ' + element.className + ' ';\n\n\tclasses = classes.split(' ');\n\n\tfor (var i = 0; i < classes.length; i++) {\n\t\tvar className = ' ' + classes[i] + ' ';\n\t\tvar classIndex = elementClassName.indexOf(className);\n\n\t\tif (classIndex === -1) {\n\t\t\telementClassName = elementClassName + classes[i] + ' ';\n\t\t} else {\n\t\t\telementClassName = elementClassName.substring(0, classIndex) + ' ' +\n\t\t\t\telementClassName.substring(classIndex + className.length);\n\t\t}\n\t}\n\n\telement.className = elementClassName.trim();\n}\n\n/**\n * Triggers the specified event on the given element.\n * NOTE: This should mostly be used for testing, not on real code.\n * @param {!Element} element The node that should trigger the event.\n * @param {string} eventName The name of the event to be triggred.\n * @param {Object=} opt_eventObj An object with data that should be on the\n * triggered event's payload.\n */\nexport function triggerEvent(element, eventName, opt_eventObj) {\n\tif (isAbleToInteractWith_(element, eventName, opt_eventObj)) {\n\t\tvar eventObj = document.createEvent('HTMLEvents');\n\t\teventObj.initEvent(eventName, true, true);\n\t\tobject.mixin(eventObj, opt_eventObj);\n\t\telement.dispatchEvent(eventObj);\n\t}\n}\n\n/**\n * Triggers the given listeners array.\n * @param {Array} listeners\n * @param {!Event} event\n * @param {!Element} element\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * of running them.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerListeners_(listeners, event, element, defaultFns) {\n\tvar ret = true;\n\tlisteners = listeners || [];\n\tfor (var i = 0; i < listeners.length && !event.stoppedImmediate; i++) {\n\t\tif (listeners[i].defaultListener_) {\n\t\t\tdefaultFns.push({\n\t\t\t\telement,\n\t\t\t\tfn: listeners[i]\n\t\t\t});\n\t\t} else {\n\t\t\tret &= listeners[i](event);\n\t\t}\n\t}\n\treturn ret;\n}\n\n/**\n * Triggers all listeners for the given event type that are stored in the\n * specified element.\n * @param {!Element} container\n * @param {!Element} element\n * @param {!Event} event\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * of running them.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerMatchedListeners_(container, element, event, defaultFns) {\n\tvar data = domData.get(element);\n\tvar listeners = data.listeners[event.type];\n\tvar ret = triggerListeners_(listeners, event, element, defaultFns);\n\n\tvar selectorsMap = domData.get(container).delegating[event.type].selectors;\n\tvar selectors = Object.keys(selectorsMap);\n\tfor (var i = 0; i < selectors.length && !event.stoppedImmediate; i++) {\n\t\tif (match(element, selectors[i])) {\n\t\t\tlisteners = selectorsMap[selectors[i]];\n\t\t\tret &= triggerListeners_(listeners, event, element, defaultFns);\n\t\t}\n\t}\n\n\treturn ret;\n}\n","'use strict';\n\nimport dom from '../dom';\nimport domData from '../domData';\nimport DomEventEmitterProxy from '../DomEventEmitterProxy';\nimport DomEventHandle from '../DomEventHandle';\nimport features from '../features';\nimport globalEval from '../globalEval';\nimport globalEvalStyles from '../globalEvalStyles';\nimport '../events';\n\nexport * from '../dom';\nexport { domData, DomEventEmitterProxy, DomEventHandle, features, globalEval, globalEvalStyles };\nexport default dom;\n","'use strict';\n\nimport { delegate, on, supportsEvent } from './dom';\nimport { EventEmitterProxy } from 'metal-events';\n\n/**\n * DomEventEmitterProxy utility. It extends `EventEmitterProxy` to also accept\n * dom elements as origin emitters.\n * @extends {EventEmitterProxy}\n */\nclass DomEventEmitterProxy extends EventEmitterProxy {\n\t/**\n\t * Adds the given listener for the given event.\n\t * @param {string} event\n\t * @param {!function()} listener\n\t * @return {!EventHandle} The listened event's handle.\n\t * @protected\n\t * @override\n\t */\n\taddListener_(event, listener) {\n\t\tif (this.originEmitter_.addEventListener) {\n\t\t\tif (this.isDelegateEvent_(event)) {\n\t\t\t\tvar index = event.indexOf(':', 9);\n\t\t\t\tvar eventName = event.substring(9, index);\n\t\t\t\tvar selector = event.substring(index + 1);\n\t\t\t\treturn delegate(this.originEmitter_, eventName, selector, listener);\n\t\t\t} else {\n\t\t\t\treturn on(this.originEmitter_, event, listener);\n\t\t\t}\n\t\t} else {\n\t\t\treturn super.addListener_(event, listener);\n\t\t}\n\t}\n\n\t/**\n\t * Checks if the given event is of the delegate type.\n\t * @param {string} event\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisDelegateEvent_(event) {\n\t\treturn event.substr(0, 9) === 'delegate:';\n\t}\n\n\t/**\n\t * Checks if the given event is supported by the origin element.\n\t * @param {string} event\n\t * @protected\n\t */\n\tisSupportedDomEvent_(event) {\n\t\tif (!this.originEmitter_ || !this.originEmitter_.addEventListener) {\n\t\t\treturn true;\n\t\t}\n\t\treturn (this.isDelegateEvent_(event) && event.indexOf(':', 9) !== -1) ||\n\t\t\tsupportsEvent(this.originEmitter_, event);\n\t}\n\n\t/**\n\t * Checks if the given event should be proxied.\n\t * @param {string} event\n\t * @return {boolean}\n\t * @protected\n\t * @override\n\t */\n\tshouldProxyEvent_(event) {\n\t\treturn super.shouldProxyEvent_(event) && this.isSupportedDomEvent_(event);\n\t}\n}\n\nexport default DomEventEmitterProxy;\n","'use strict';\n\nimport { append } from './dom';\nimport { string } from 'metal';\n\n/**\n * Class with static methods responsible for doing browser feature checks.\n */\nclass features {\n\t/**\n\t * Some browsers still supports prefixed animation events. This method can\n\t * be used to retrieve the current browser event name for both, animation\n\t * and transition.\n\t * @return {object}\n\t */\n\tstatic checkAnimationEventName() {\n\t\tif (features.animationEventName_ === undefined) {\n\t\t\tfeatures.animationEventName_ = {\n\t\t\t\tanimation: features.checkAnimationEventName_('animation'),\n\t\t\t\ttransition: features.checkAnimationEventName_('transition')\n\t\t\t};\n\t\t}\n\t\treturn features.animationEventName_;\n\t}\n\n\t/**\n\t * @protected\n\t * @param {string} type Type to test: animation, transition.\n\t * @return {string} Browser event name.\n\t */\n\tstatic checkAnimationEventName_(type) {\n\t\tvar prefixes = ['Webkit', 'MS', 'O', ''];\n\t\tvar typeTitleCase = string.replaceInterval(type, 0, 1, type.substring(0, 1).toUpperCase());\n\t\tvar suffixes = [typeTitleCase + 'End', typeTitleCase + 'End', typeTitleCase + 'End', type + 'end'];\n\t\tfor (var i = 0; i < prefixes.length; i++) {\n\t\t\tif (features.animationElement_.style[prefixes[i] + typeTitleCase] !== undefined) {\n\t\t\t\treturn prefixes[i].toLowerCase() + suffixes[i];\n\t\t\t}\n\t\t}\n\t\treturn type + 'end';\n\t}\n\n\t/**\n\t * Some browsers (like IE9) change the order of element attributes, when html\n\t * is rendered. This method can be used to check if this behavior happens on\n\t * the current browser.\n\t * @return {boolean}\n\t */\n\tstatic checkAttrOrderChange() {\n\t\tif (features.attrOrderChange_ === undefined) {\n\t\t\tvar originalContent = '
';\n\t\t\tvar element = document.createElement('div');\n\t\t\tappend(element, originalContent);\n\t\t\tfeatures.attrOrderChange_ = originalContent !== element.innerHTML;\n\t\t}\n\t\treturn features.attrOrderChange_;\n\t}\n}\n\nfeatures.animationElement_ = document.createElement('div');\nfeatures.animationEventName_ = undefined;\nfeatures.attrOrderChange_ = undefined;\n\nexport default features;\n","'use strict';\n\nimport { async } from 'metal';\nimport { exitDocument, once } from './dom';\n\n/**\n * Utility functions for running javascript code in the global scope.\n */\nclass globalEval {\n\t/**\n\t * Evaluates the given string in the global scope.\n\t * @param {string} text\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} script\n\t */\n\tstatic run(text, opt_appendFn) {\n\t\tvar script = document.createElement('script');\n\t\tscript.text = text;\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(script);\n\t\t} else {\n\t\t\tdocument.head.appendChild(script);\n\t\t}\n\t\texitDocument(script);\n\t\treturn script;\n\t}\n\n\t/**\n\t * Evaluates the given javascript file in the global scope.\n\t * @param {string} src The file's path.\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} script\n\t */\n\tstatic runFile(src, opt_callback, opt_appendFn) {\n\t\tvar script = document.createElement('script');\n\t\tscript.src = src;\n\n\t\tvar callback = function() {\n\t\t\texitDocument(script);\n\t\t\topt_callback && opt_callback();\n\t\t};\n\t\tonce(script, 'load', callback);\n\t\tonce(script, 'error', callback);\n\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(script);\n\t\t} else {\n\t\t\tdocument.head.appendChild(script);\n\t\t}\n\n\t\treturn script;\n\t}\n\n\t/**\n\t * Evaluates the code referenced by the given script element.\n\t * @param {!Element} script\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} script\n\t */\n\tstatic runScript(script, opt_callback, opt_appendFn) {\n\t\tvar callback = function() {\n\t\t\topt_callback && opt_callback();\n\t\t};\n\t\tif (script.type && script.type !== 'text/javascript') {\n\t\t\tasync.nextTick(callback);\n\t\t\treturn;\n\t\t}\n\t\texitDocument(script);\n\t\tif (script.src) {\n\t\t\treturn globalEval.runFile(script.src, opt_callback, opt_appendFn);\n\t\t} else {\n\t\t\tasync.nextTick(callback);\n\t\t\treturn globalEval.run(script.text, opt_appendFn);\n\t\t}\n\t}\n\n\t/**\n\t * Evaluates any script tags present in the given element.\n\t * @param {!Element} element\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t */\n\tstatic runScriptsInElement(element, opt_callback, opt_appendFn) {\n\t\tvar scripts = element.querySelectorAll('script');\n\t\tif (scripts.length) {\n\t\t\tglobalEval.runScriptsInOrder(scripts, 0, opt_callback, opt_appendFn);\n\t\t} else if (opt_callback) {\n\t\t\tasync.nextTick(opt_callback);\n\t\t}\n\t}\n\n\t/**\n\t * Runs the given scripts elements in the order that they appear.\n\t * @param {!NodeList} scripts\n\t * @param {number} index\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t */\n\tstatic runScriptsInOrder(scripts, index, opt_callback, opt_appendFn) {\n\t\tglobalEval.runScript(scripts.item(index), function() {\n\t\t\tif (index < scripts.length - 1) {\n\t\t\t\tglobalEval.runScriptsInOrder(scripts, index + 1, opt_callback, opt_appendFn);\n\t\t\t} else if (opt_callback) {\n\t\t\t\tasync.nextTick(opt_callback);\n\t\t\t}\n\t\t}, opt_appendFn);\n\t}\n}\n\nexport default globalEval;\n","'use strict';\n\nimport { async } from 'metal';\nimport { once } from './dom';\n\n/**\n * Utility functions for running styles.\n */\nclass globalEvalStyles {\n\t/**\n\t * Evaluates the given style.\n\t * @param {string} text\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} style\n\t */\n\tstatic run(text, opt_appendFn) {\n\t\tvar style = document.createElement('style');\n\t\tstyle.innerHTML = text;\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(style);\n\t\t} else {\n\t\t\tdocument.head.appendChild(style);\n\t\t}\n\t\treturn style;\n\t}\n\n\t/**\n\t * Evaluates the given style file.\n\t * @param {string} href The file's path.\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the styles has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} style\n\t */\n\tstatic runFile(href, opt_callback, opt_appendFn) {\n\t\tvar link = document.createElement('link');\n\t\tlink.rel = 'stylesheet';\n\t\tlink.href = href;\n\t\tglobalEvalStyles.runStyle(link, opt_callback, opt_appendFn);\n\t\treturn link;\n\t}\n\n\t/**\n\t * Evaluates the code referenced by the given style/link element.\n\t * @param {!Element} style\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} style\n\t */\n\tstatic runStyle(style, opt_callback, opt_appendFn) {\n\t\tvar callback = function() {\n\t\t\topt_callback && opt_callback();\n\t\t};\n\t\tif (style.rel && style.rel !== 'stylesheet') {\n\t\t\tasync.nextTick(callback);\n\t\t\treturn;\n\t\t}\n\n\t\tif (style.tagName === 'STYLE') {\n\t\t\tasync.nextTick(callback);\n\t\t} else {\n\t\t\tonce(style, 'load', callback);\n\t\t\tonce(style, 'error', callback);\n\t\t}\n\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(style);\n\t\t} else {\n\t\t\tdocument.head.appendChild(style);\n\t\t}\n\n\t\treturn style;\n\t}\n\n\t/**\n\t * Evaluates any style present in the given element.\n\t * @param {!Element} element\n\t * @param {function()=} opt_callback Optional function to be called when the\n\t * style has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t */\n\tstatic runStylesInElement(element, opt_callback, opt_appendFn) {\n\t\tvar styles = element.querySelectorAll('style,link');\n\t\tif (styles.length === 0 && opt_callback) {\n\t\t\tasync.nextTick(opt_callback);\n\t\t\treturn;\n\t\t}\n\n\t\tvar loadCount = 0;\n\t\tvar callback = function() {\n\t\t\tif (opt_callback && ++loadCount === styles.length) {\n\t\t\t\tasync.nextTick(opt_callback);\n\t\t\t}\n\t\t};\n\t\tfor (var i = 0; i < styles.length; i++) {\n\t\t\tglobalEvalStyles.runStyle(styles[i], callback, opt_appendFn);\n\t\t}\n\t}\n}\n\nexport default globalEvalStyles;\n","/*!\n * Promises polyfill from Google's Closure Library.\n *\n * Copyright 2013 The Closure Library Authors. All Rights Reserved.\n *\n * NOTE(eduardo): Promise support is not ready on all supported browsers,\n * therefore metal-promise is temporarily using Google's promises as polyfill.\n * It supports cancellable promises and has clean and fast implementation.\n */\n\n'use strict';\n\nimport { isDef, isFunction, isObject } from 'metal';\nimport { async } from 'metal';\n\n/**\n * Provides a more strict interface for Thenables in terms of\n * http://promisesaplus.com for interop with {@see CancellablePromise}.\n *\n * @interface\n * @extends {IThenable.}\n * @template TYPE\n */\nvar Thenable = function() {};\n\n/**\n * Adds callbacks that will operate on the result of the Thenable, returning a\n * new child Promise.\n *\n * If the Thenable is fulfilled, the {@code onFulfilled} callback will be\n * invoked with the fulfillment value as argument, and the child Promise will\n * be fulfilled with the return value of the callback. If the callback throws\n * an exception, the child Promise will be rejected with the thrown value\n * instead.\n *\n * If the Thenable is rejected, the {@code onRejected} callback will be invoked\n * with the rejection reason as argument, and the child Promise will be rejected\n * with the return value of the callback or thrown value.\n *\n * @param {?(function(this:THIS, TYPE):\n * (RESULT|IThenable.|Thenable))=} opt_onFulfilled A\n * function that will be invoked with the fulfillment value if the Promise\n * is fullfilled.\n * @param {?(function(*): *)=} opt_onRejected A function that will be invoked\n * with the rejection reason if the Promise is rejected.\n * @param {THIS=} opt_context An optional context object that will be the\n * execution context for the callbacks. By default, functions are executed\n * with the default this.\n * @return {!CancellablePromise.} A new Promise that will receive the\n * result of the fulfillment or rejection callback.\n * @template RESULT,THIS\n */\nThenable.prototype.then = function() {};\n\n\n/**\n * An expando property to indicate that an object implements\n * {@code Thenable}.\n *\n * {@see addImplementation}.\n *\n * @const\n */\nThenable.IMPLEMENTED_BY_PROP = '$goog_Thenable';\n\n\n/**\n * Marks a given class (constructor) as an implementation of Thenable, so\n * that we can query that fact at runtime. The class must have already\n * implemented the interface.\n * Exports a 'then' method on the constructor prototype, so that the objects\n * also implement the extern {@see Thenable} interface for interop with\n * other Promise implementations.\n * @param {function(new:Thenable,...[?])} ctor The class constructor. The\n * corresponding class must have already implemented the interface.\n */\nThenable.addImplementation = function(ctor) {\n ctor.prototype.then = ctor.prototype.then;\n ctor.prototype.$goog_Thenable = true;\n};\n\n\n/**\n * @param {*} object\n * @return {boolean} Whether a given instance implements {@code Thenable}.\n * The class/superclass of the instance must call {@code addImplementation}.\n */\nThenable.isImplementedBy = function(object) {\n if (!object) {\n return false;\n }\n try {\n return !!object.$goog_Thenable;\n } catch (e) {\n // Property access seems to be forbidden.\n return false;\n }\n};\n\n\n/**\n * Like bind(), except that a 'this object' is not required. Useful when the\n * target function is already bound.\n *\n * Usage:\n * var g = partial(f, arg1, arg2);\n * g(arg3, arg4);\n *\n * @param {Function} fn A function to partially apply.\n * @param {...*} var_args Additional arguments that are partially applied to fn.\n * @return {!Function} A partially-applied form of the function bind() was\n * invoked as a method of.\n */\nvar partial = function(fn) {\n var args = Array.prototype.slice.call(arguments, 1);\n return function() {\n // Clone the array (with slice()) and append additional arguments\n // to the existing arguments.\n var newArgs = args.slice();\n newArgs.push.apply(newArgs, arguments);\n return fn.apply(this, newArgs);\n };\n};\n\n/**\n * Promises provide a result that may be resolved asynchronously. A Promise may\n * be resolved by being fulfilled or rejected with a value, which will be known\n * as the fulfillment value or the rejection reason. Whether fulfilled or\n * rejected, the Promise result is immutable once it is set.\n *\n * Promises may represent results of any type, including undefined. Rejection\n * reasons are typically Errors, but may also be of any type. Closure Promises\n * allow for optional type annotations that enforce that fulfillment values are\n * of the appropriate types at compile time.\n *\n * The result of a Promise is accessible by calling {@code then} and registering\n * {@code onFulfilled} and {@code onRejected} callbacks. Once the Promise\n * resolves, the relevant callbacks are invoked with the fulfillment value or\n * rejection reason as argument. Callbacks are always invoked in the order they\n * were registered, even when additional {@code then} calls are made from inside\n * another callback. A callback is always run asynchronously sometime after the\n * scope containing the registering {@code then} invocation has returned.\n *\n * If a Promise is resolved with another Promise, the first Promise will block\n * until the second is resolved, and then assumes the same result as the second\n * Promise. This allows Promises to depend on the results of other Promises,\n * linking together multiple asynchronous operations.\n *\n * This implementation is compatible with the Promises/A+ specification and\n * passes that specification's conformance test suite. A Closure Promise may be\n * resolved with a Promise instance (or sufficiently compatible Promise-like\n * object) created by other Promise implementations. From the specification,\n * Promise-like objects are known as \"Thenables\".\n *\n * @see http://promisesaplus.com/\n *\n * @param {function(\n * this:RESOLVER_CONTEXT,\n * function((TYPE|IThenable.|Thenable)),\n * function(*)): void} resolver\n * Initialization function that is invoked immediately with {@code resolve}\n * and {@code reject} functions as arguments. The Promise is resolved or\n * rejected with the first argument passed to either function.\n * @param {RESOLVER_CONTEXT=} opt_context An optional context for executing the\n * resolver function. If unspecified, the resolver function will be executed\n * in the default scope.\n * @constructor\n * @struct\n * @final\n * @implements {Thenable.}\n * @template TYPE,RESOLVER_CONTEXT\n */\nvar CancellablePromise = function(resolver, opt_context) {\n /**\n * The internal state of this Promise. Either PENDING, FULFILLED, REJECTED, or\n * BLOCKED.\n * @private {CancellablePromise.State_}\n */\n this.state_ = CancellablePromise.State_.PENDING;\n\n /**\n * The resolved result of the Promise. Immutable once set with either a\n * fulfillment value or rejection reason.\n * @private {*}\n */\n this.result_ = undefined;\n\n /**\n * For Promises created by calling {@code then()}, the originating parent.\n * @private {CancellablePromise}\n */\n this.parent_ = null;\n\n /**\n * The list of {@code onFulfilled} and {@code onRejected} callbacks added to\n * this Promise by calls to {@code then()}.\n * @private {Array.}\n */\n this.callbackEntries_ = null;\n\n /**\n * Whether the Promise is in the queue of Promises to execute.\n * @private {boolean}\n */\n this.executing_ = false;\n\n if (CancellablePromise.UNHANDLED_REJECTION_DELAY > 0) {\n /**\n * A timeout ID used when the {@code UNHANDLED_REJECTION_DELAY} is greater\n * than 0 milliseconds. The ID is set when the Promise is rejected, and\n * cleared only if an {@code onRejected} callback is invoked for the\n * Promise (or one of its descendants) before the delay is exceeded.\n *\n * If the rejection is not handled before the timeout completes, the\n * rejection reason is passed to the unhandled rejection handler.\n * @private {number}\n */\n this.unhandledRejectionId_ = 0;\n } else if (CancellablePromise.UNHANDLED_REJECTION_DELAY === 0) {\n /**\n * When the {@code UNHANDLED_REJECTION_DELAY} is set to 0 milliseconds, a\n * boolean that is set if the Promise is rejected, and reset to false if an\n * {@code onRejected} callback is invoked for the Promise (or one of its\n * descendants). If the rejection is not handled before the next timestep,\n * the rejection reason is passed to the unhandled rejection handler.\n * @private {boolean}\n */\n this.hadUnhandledRejection_ = false;\n }\n\n try {\n var self = this;\n resolver.call(\n opt_context, function(value) {\n self.resolve_(CancellablePromise.State_.FULFILLED, value);\n }, function(reason) {\n self.resolve_(CancellablePromise.State_.REJECTED, reason);\n });\n } catch (e) {\n this.resolve_(CancellablePromise.State_.REJECTED, e);\n }\n};\n\n/**\n * The delay in milliseconds before a rejected Promise's reason is passed to\n * the rejection handler. By default, the rejection handler rethrows the\n * rejection reason so that it appears in the developer console or\n * {@code window.onerror} handler.\n * Rejections are rethrown as quickly as possible by default. A negative value\n * disables rejection handling entirely.\n * @type {number}\n */\nCancellablePromise.UNHANDLED_REJECTION_DELAY = 0;\n\n\n/**\n * The possible internal states for a Promise. These states are not directly\n * observable to external callers.\n * @enum {number}\n * @private\n */\nCancellablePromise.State_ = {\n /** The Promise is waiting for resolution. */\n PENDING: 0,\n\n /** The Promise is blocked waiting for the result of another Thenable. */\n BLOCKED: 1,\n\n /** The Promise has been resolved with a fulfillment value. */\n FULFILLED: 2,\n\n /** The Promise has been resolved with a rejection reason. */\n REJECTED: 3\n};\n\n\n/**\n * Typedef for entries in the callback chain. Each call to {@code then},\n * {@code thenCatch}, or {@code thenAlways} creates an entry containing the\n * functions that may be invoked once the Promise is resolved.\n *\n * @typedef {{\n * child: CancellablePromise,\n * onFulfilled: function(*),\n * onRejected: function(*)\n * }}\n * @private\n */\nCancellablePromise.CallbackEntry_ = null;\n\n\n/**\n * @param {(TYPE|Thenable.|Thenable)=} opt_value\n * @return {!CancellablePromise.} A new Promise that is immediately resolved\n * with the given value.\n * @template TYPE\n */\nCancellablePromise.resolve = function(opt_value) {\n return new CancellablePromise(function(resolve) {\n resolve(opt_value);\n });\n};\n\n\n/**\n * @param {*=} opt_reason\n * @return {!CancellablePromise} A new Promise that is immediately rejected with the\n * given reason.\n */\nCancellablePromise.reject = function(opt_reason) {\n return new CancellablePromise(function(resolve, reject) {\n reject(opt_reason);\n });\n};\n\n\n/**\n * @param {!Array.|Thenable)>} promises\n * @return {!CancellablePromise.} A Promise that receives the result of the\n * first Promise (or Promise-like) input to complete.\n * @template TYPE\n */\nCancellablePromise.race = function(promises) {\n return new CancellablePromise(function(resolve, reject) {\n if (!promises.length) {\n resolve(undefined);\n }\n for (var i = 0, promise; (promise = promises[i]); i++) {\n promise.then(resolve, reject);\n }\n });\n};\n\n\n/**\n * @param {!Array.|Thenable)>} promises\n * @return {!CancellablePromise.>} A Promise that receives a list of\n * every fulfilled value once every input Promise (or Promise-like) is\n * successfully fulfilled, or is rejected by the first rejection result.\n * @template TYPE\n */\nCancellablePromise.all = function(promises) {\n return new CancellablePromise(function(resolve, reject) {\n var toFulfill = promises.length;\n var values = [];\n\n if (!toFulfill) {\n resolve(values);\n return;\n }\n\n var onFulfill = function(index, value) {\n toFulfill--;\n values[index] = value;\n if (toFulfill === 0) {\n resolve(values);\n }\n };\n\n var onReject = function(reason) {\n reject(reason);\n };\n\n for (var i = 0, promise; (promise = promises[i]); i++) {\n promise.then(partial(onFulfill, i), onReject);\n }\n });\n};\n\n\n/**\n * @param {!Array.|Thenable)>} promises\n * @return {!CancellablePromise.} A Promise that receives the value of\n * the first input to be fulfilled, or is rejected with a list of every\n * rejection reason if all inputs are rejected.\n * @template TYPE\n */\nCancellablePromise.firstFulfilled = function(promises) {\n return new CancellablePromise(function(resolve, reject) {\n var toReject = promises.length;\n var reasons = [];\n\n if (!toReject) {\n resolve(undefined);\n return;\n }\n\n var onFulfill = function(value) {\n resolve(value);\n };\n\n var onReject = function(index, reason) {\n toReject--;\n reasons[index] = reason;\n if (toReject === 0) {\n reject(reasons);\n }\n };\n\n for (var i = 0, promise; (promise = promises[i]); i++) {\n promise.then(onFulfill, partial(onReject, i));\n }\n });\n};\n\n\n/**\n * Adds callbacks that will operate on the result of the Promise, returning a\n * new child Promise.\n *\n * If the Promise is fulfilled, the {@code onFulfilled} callback will be invoked\n * with the fulfillment value as argument, and the child Promise will be\n * fulfilled with the return value of the callback. If the callback throws an\n * exception, the child Promise will be rejected with the thrown value instead.\n *\n * If the Promise is rejected, the {@code onRejected} callback will be invoked\n * with the rejection reason as argument, and the child Promise will be rejected\n * with the return value (or thrown value) of the callback.\n *\n * @override\n */\nCancellablePromise.prototype.then = function(opt_onFulfilled, opt_onRejected, opt_context) {\n return this.addChildPromise_(\n isFunction(opt_onFulfilled) ? opt_onFulfilled : null,\n isFunction(opt_onRejected) ? opt_onRejected : null,\n opt_context);\n};\nThenable.addImplementation(CancellablePromise);\n\n\n/**\n * Adds a callback that will be invoked whether the Promise is fulfilled or\n * rejected. The callback receives no argument, and no new child Promise is\n * created. This is useful for ensuring that cleanup takes place after certain\n * asynchronous operations. Callbacks added with {@code thenAlways} will be\n * executed in the same order with other calls to {@code then},\n * {@code thenAlways}, or {@code thenCatch}.\n *\n * Since it does not produce a new child Promise, cancellation propagation is\n * not prevented by adding callbacks with {@code thenAlways}. A Promise that has\n * a cleanup handler added with {@code thenAlways} will be canceled if all of\n * its children created by {@code then} (or {@code thenCatch}) are canceled.\n *\n * @param {function(this:THIS): void} onResolved A function that will be invoked\n * when the Promise is resolved.\n * @param {THIS=} opt_context An optional context object that will be the\n * execution context for the callbacks. By default, functions are executed\n * in the global scope.\n * @return {!CancellablePromise.} This Promise, for chaining additional calls.\n * @template THIS\n */\nCancellablePromise.prototype.thenAlways = function(onResolved, opt_context) {\n var callback = function() {\n try {\n // Ensure that no arguments are passed to onResolved.\n onResolved.call(opt_context);\n } catch (err) {\n CancellablePromise.handleRejection_.call(null, err);\n }\n };\n\n this.addCallbackEntry_({\n child: null,\n onRejected: callback,\n onFulfilled: callback\n });\n return this;\n};\n\n\n/**\n * Adds a callback that will be invoked only if the Promise is rejected. This\n * is equivalent to {@code then(null, onRejected)}.\n *\n * @param {!function(this:THIS, *): *} onRejected A function that will be\n * invoked with the rejection reason if the Promise is rejected.\n * @param {THIS=} opt_context An optional context object that will be the\n * execution context for the callbacks. By default, functions are executed\n * in the global scope.\n * @return {!CancellablePromise} A new Promise that will receive the result of the\n * callback.\n * @template THIS\n */\nCancellablePromise.prototype.thenCatch = function(onRejected, opt_context) {\n return this.addChildPromise_(null, onRejected, opt_context);\n};\n\n/**\n * Alias of {@link CancellablePromise.prototype.thenCatch}\n */\nCancellablePromise.prototype.catch = CancellablePromise.prototype.thenCatch;\n\n\n/**\n * Cancels the Promise if it is still pending by rejecting it with a cancel\n * Error. No action is performed if the Promise is already resolved.\n *\n * All child Promises of the canceled Promise will be rejected with the same\n * cancel error, as with normal Promise rejection. If the Promise to be canceled\n * is the only child of a pending Promise, the parent Promise will also be\n * canceled. Cancellation may propagate upward through multiple generations.\n *\n * @param {string=} opt_message An optional debugging message for describing the\n * cancellation reason.\n */\nCancellablePromise.prototype.cancel = function(opt_message) {\n if (this.state_ === CancellablePromise.State_.PENDING) {\n async.run(function() {\n var err = new CancellablePromise.CancellationError(opt_message);\n err.IS_CANCELLATION_ERROR = true;\n this.cancelInternal_(err);\n }, this);\n }\n};\n\n\n/**\n * Cancels this Promise with the given error.\n *\n * @param {!Error} err The cancellation error.\n * @private\n */\nCancellablePromise.prototype.cancelInternal_ = function(err) {\n if (this.state_ === CancellablePromise.State_.PENDING) {\n if (this.parent_) {\n // Cancel the Promise and remove it from the parent's child list.\n this.parent_.cancelChild_(this, err);\n } else {\n this.resolve_(CancellablePromise.State_.REJECTED, err);\n }\n }\n};\n\n\n/**\n * Cancels a child Promise from the list of callback entries. If the Promise has\n * not already been resolved, reject it with a cancel error. If there are no\n * other children in the list of callback entries, propagate the cancellation\n * by canceling this Promise as well.\n *\n * @param {!CancellablePromise} childPromise The Promise to cancel.\n * @param {!Error} err The cancel error to use for rejecting the Promise.\n * @private\n */\nCancellablePromise.prototype.cancelChild_ = function(childPromise, err) {\n if (!this.callbackEntries_) {\n return;\n }\n var childCount = 0;\n var childIndex = -1;\n\n // Find the callback entry for the childPromise, and count whether there are\n // additional child Promises.\n for (var i = 0, entry; (entry = this.callbackEntries_[i]); i++) {\n var child = entry.child;\n if (child) {\n childCount++;\n if (child === childPromise) {\n childIndex = i;\n }\n if (childIndex >= 0 && childCount > 1) {\n break;\n }\n }\n }\n\n // If the child Promise was the only child, cancel this Promise as well.\n // Otherwise, reject only the child Promise with the cancel error.\n if (childIndex >= 0) {\n if (this.state_ === CancellablePromise.State_.PENDING && childCount === 1) {\n this.cancelInternal_(err);\n } else {\n var callbackEntry = this.callbackEntries_.splice(childIndex, 1)[0];\n this.executeCallback_(\n callbackEntry, CancellablePromise.State_.REJECTED, err);\n }\n }\n};\n\n\n/**\n * Adds a callback entry to the current Promise, and schedules callback\n * execution if the Promise has already been resolved.\n *\n * @param {CancellablePromise.CallbackEntry_} callbackEntry Record containing\n * {@code onFulfilled} and {@code onRejected} callbacks to execute after\n * the Promise is resolved.\n * @private\n */\nCancellablePromise.prototype.addCallbackEntry_ = function(callbackEntry) {\n if ((!this.callbackEntries_ || !this.callbackEntries_.length) &&\n (this.state_ === CancellablePromise.State_.FULFILLED ||\n this.state_ === CancellablePromise.State_.REJECTED)) {\n this.scheduleCallbacks_();\n }\n if (!this.callbackEntries_) {\n this.callbackEntries_ = [];\n }\n this.callbackEntries_.push(callbackEntry);\n};\n\n\n/**\n * Creates a child Promise and adds it to the callback entry list. The result of\n * the child Promise is determined by the state of the parent Promise and the\n * result of the {@code onFulfilled} or {@code onRejected} callbacks as\n * specified in the Promise resolution procedure.\n *\n * @see http://promisesaplus.com/#the__method\n *\n * @param {?function(this:THIS, TYPE):\n * (RESULT|CancellablePromise.|Thenable)} onFulfilled A callback that\n * will be invoked if the Promise is fullfilled, or null.\n * @param {?function(this:THIS, *): *} onRejected A callback that will be\n * invoked if the Promise is rejected, or null.\n * @param {THIS=} opt_context An optional execution context for the callbacks.\n * in the default calling context.\n * @return {!CancellablePromise} The child Promise.\n * @template RESULT,THIS\n * @private\n */\nCancellablePromise.prototype.addChildPromise_ = function(\nonFulfilled, onRejected, opt_context) {\n\n var callbackEntry = {\n child: null,\n onFulfilled: null,\n onRejected: null\n };\n\n callbackEntry.child = new CancellablePromise(function(resolve, reject) {\n // Invoke onFulfilled, or resolve with the parent's value if absent.\n callbackEntry.onFulfilled = onFulfilled ? function(value) {\n try {\n var result = onFulfilled.call(opt_context, value);\n resolve(result);\n } catch (err) {\n reject(err);\n }\n } : resolve;\n\n // Invoke onRejected, or reject with the parent's reason if absent.\n callbackEntry.onRejected = onRejected ? function(reason) {\n try {\n var result = onRejected.call(opt_context, reason);\n if (!isDef(result) && reason.IS_CANCELLATION_ERROR) {\n // Propagate cancellation to children if no other result is returned.\n reject(reason);\n } else {\n resolve(result);\n }\n } catch (err) {\n reject(err);\n }\n } : reject;\n });\n\n callbackEntry.child.parent_ = this;\n this.addCallbackEntry_(\n /** @type {CancellablePromise.CallbackEntry_} */ (callbackEntry));\n return callbackEntry.child;\n};\n\n\n/**\n * Unblocks the Promise and fulfills it with the given value.\n *\n * @param {TYPE} value\n * @private\n */\nCancellablePromise.prototype.unblockAndFulfill_ = function(value) {\n if (this.state_ !== CancellablePromise.State_.BLOCKED) {\n throw new Error('CancellablePromise is not blocked.');\n }\n this.state_ = CancellablePromise.State_.PENDING;\n this.resolve_(CancellablePromise.State_.FULFILLED, value);\n};\n\n\n/**\n * Unblocks the Promise and rejects it with the given rejection reason.\n *\n * @param {*} reason\n * @private\n */\nCancellablePromise.prototype.unblockAndReject_ = function(reason) {\n if (this.state_ !== CancellablePromise.State_.BLOCKED) {\n throw new Error('CancellablePromise is not blocked.');\n }\n this.state_ = CancellablePromise.State_.PENDING;\n this.resolve_(CancellablePromise.State_.REJECTED, reason);\n};\n\n\n/**\n * Attempts to resolve a Promise with a given resolution state and value. This\n * is a no-op if the given Promise has already been resolved.\n *\n * If the given result is a Thenable (such as another Promise), the Promise will\n * be resolved with the same state and result as the Thenable once it is itself\n * resolved.\n *\n * If the given result is not a Thenable, the Promise will be fulfilled or\n * rejected with that result based on the given state.\n *\n * @see http://promisesaplus.com/#the_promise_resolution_procedure\n *\n * @param {CancellablePromise.State_} state\n * @param {*} x The result to apply to the Promise.\n * @private\n */\nCancellablePromise.prototype.resolve_ = function(state, x) {\n if (this.state_ !== CancellablePromise.State_.PENDING) {\n return;\n }\n\n if (this === x) {\n state = CancellablePromise.State_.REJECTED;\n x = new TypeError('CancellablePromise cannot resolve to itself');\n\n } else if (Thenable.isImplementedBy(x)) {\n x = /** @type {!Thenable} */ (x);\n this.state_ = CancellablePromise.State_.BLOCKED;\n x.then(this.unblockAndFulfill_, this.unblockAndReject_, this);\n return;\n\n } else if (isObject(x)) {\n try {\n var then = x.then;\n if (isFunction(then)) {\n this.tryThen_(x, then);\n return;\n }\n } catch (e) {\n state = CancellablePromise.State_.REJECTED;\n x = e;\n }\n }\n\n this.result_ = x;\n this.state_ = state;\n this.scheduleCallbacks_();\n\n if (state === CancellablePromise.State_.REJECTED && !x.IS_CANCELLATION_ERROR) {\n CancellablePromise.addUnhandledRejection_(this, x);\n }\n};\n\n\n/**\n * Attempts to call the {@code then} method on an object in the hopes that it is\n * a Promise-compatible instance. This allows interoperation between different\n * Promise implementations, however a non-compliant object may cause a Promise\n * to hang indefinitely. If the {@code then} method throws an exception, the\n * dependent Promise will be rejected with the thrown value.\n *\n * @see http://promisesaplus.com/#point-70\n *\n * @param {Thenable} thenable An object with a {@code then} method that may be\n * compatible with the Promise/A+ specification.\n * @param {!Function} then The {@code then} method of the Thenable object.\n * @private\n */\nCancellablePromise.prototype.tryThen_ = function(thenable, then) {\n this.state_ = CancellablePromise.State_.BLOCKED;\n var promise = this;\n var called = false;\n\n var resolve = function(value) {\n if (!called) {\n called = true;\n promise.unblockAndFulfill_(value);\n }\n };\n\n var reject = function(reason) {\n if (!called) {\n called = true;\n promise.unblockAndReject_(reason);\n }\n };\n\n try {\n then.call(thenable, resolve, reject);\n } catch (e) {\n reject(e);\n }\n};\n\n\n/**\n * Executes the pending callbacks of a resolved Promise after a timeout.\n *\n * Section 2.2.4 of the Promises/A+ specification requires that Promise\n * callbacks must only be invoked from a call stack that only contains Promise\n * implementation code, which we accomplish by invoking callback execution after\n * a timeout. If {@code startExecution_} is called multiple times for the same\n * Promise, the callback chain will be evaluated only once. Additional callbacks\n * may be added during the evaluation phase, and will be executed in the same\n * event loop.\n *\n * All Promises added to the waiting list during the same browser event loop\n * will be executed in one batch to avoid using a separate timeout per Promise.\n *\n * @private\n */\nCancellablePromise.prototype.scheduleCallbacks_ = function() {\n if (!this.executing_) {\n this.executing_ = true;\n async.run(this.executeCallbacks_, this);\n }\n};\n\n\n/**\n * Executes all pending callbacks for this Promise.\n *\n * @private\n */\nCancellablePromise.prototype.executeCallbacks_ = function() {\n while (this.callbackEntries_ && this.callbackEntries_.length) {\n var entries = this.callbackEntries_;\n this.callbackEntries_ = [];\n\n for (var i = 0; i < entries.length; i++) {\n this.executeCallback_(entries[i], this.state_, this.result_);\n }\n }\n this.executing_ = false;\n};\n\n\n/**\n * Executes a pending callback for this Promise. Invokes an {@code onFulfilled}\n * or {@code onRejected} callback based on the resolved state of the Promise.\n *\n * @param {!CancellablePromise.CallbackEntry_} callbackEntry An entry containing the\n * onFulfilled and/or onRejected callbacks for this step.\n * @param {CancellablePromise.State_} state The resolution status of the Promise,\n * either FULFILLED or REJECTED.\n * @param {*} result The resolved result of the Promise.\n * @private\n */\nCancellablePromise.prototype.executeCallback_ = function(\ncallbackEntry, state, result) {\n if (state === CancellablePromise.State_.FULFILLED) {\n callbackEntry.onFulfilled(result);\n } else {\n this.removeUnhandledRejection_();\n callbackEntry.onRejected(result);\n }\n};\n\n\n/**\n * Marks this rejected Promise as having being handled. Also marks any parent\n * Promises in the rejected state as handled. The rejection handler will no\n * longer be invoked for this Promise (if it has not been called already).\n *\n * @private\n */\nCancellablePromise.prototype.removeUnhandledRejection_ = function() {\n var p;\n if (CancellablePromise.UNHANDLED_REJECTION_DELAY > 0) {\n for (p = this; p && p.unhandledRejectionId_; p = p.parent_) {\n clearTimeout(p.unhandledRejectionId_);\n p.unhandledRejectionId_ = 0;\n }\n } else if (CancellablePromise.UNHANDLED_REJECTION_DELAY === 0) {\n for (p = this; p && p.hadUnhandledRejection_; p = p.parent_) {\n p.hadUnhandledRejection_ = false;\n }\n }\n};\n\n\n/**\n * Marks this rejected Promise as unhandled. If no {@code onRejected} callback\n * is called for this Promise before the {@code UNHANDLED_REJECTION_DELAY}\n * expires, the reason will be passed to the unhandled rejection handler. The\n * handler typically rethrows the rejection reason so that it becomes visible in\n * the developer console.\n *\n * @param {!CancellablePromise} promise The rejected Promise.\n * @param {*} reason The Promise rejection reason.\n * @private\n */\nCancellablePromise.addUnhandledRejection_ = function(promise, reason) {\n if (CancellablePromise.UNHANDLED_REJECTION_DELAY > 0) {\n promise.unhandledRejectionId_ = setTimeout(function() {\n CancellablePromise.handleRejection_.call(null, reason);\n }, CancellablePromise.UNHANDLED_REJECTION_DELAY);\n\n } else if (CancellablePromise.UNHANDLED_REJECTION_DELAY === 0) {\n promise.hadUnhandledRejection_ = true;\n async.run(function() {\n if (promise.hadUnhandledRejection_) {\n CancellablePromise.handleRejection_.call(null, reason);\n }\n });\n }\n};\n\n\n/**\n * A method that is invoked with the rejection reasons for Promises that are\n * rejected but have no {@code onRejected} callbacks registered yet.\n * @type {function(*)}\n * @private\n */\nCancellablePromise.handleRejection_ = async.throwException;\n\n\n/**\n * Sets a handler that will be called with reasons from unhandled rejected\n * Promises. If the rejected Promise (or one of its descendants) has an\n * {@code onRejected} callback registered, the rejection will be considered\n * handled, and the rejection handler will not be called.\n *\n * By default, unhandled rejections are rethrown so that the error may be\n * captured by the developer console or a {@code window.onerror} handler.\n *\n * @param {function(*)} handler A function that will be called with reasons from\n * rejected Promises. Defaults to {@code async.throwException}.\n */\nCancellablePromise.setUnhandledRejectionHandler = function(handler) {\n CancellablePromise.handleRejection_ = handler;\n};\n\n\n\n/**\n * Error used as a rejection reason for canceled Promises.\n *\n * @param {string=} opt_message\n * @constructor\n * @extends {Error}\n * @final\n */\nCancellablePromise.CancellationError = class extends Error {\n constructor(opt_message) {\n super(opt_message);\n\n if (opt_message) {\n this.message = opt_message;\n }\n }\n};\n\n/** @override */\nCancellablePromise.CancellationError.prototype.name = 'cancel';\n\nexport {CancellablePromise};\nexport default CancellablePromise;\n","'use strict';\n\nimport core from 'metal';\n\nconst REGEX = /([\\/])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])*)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?)/g;\n\n/**\n * Converts the given array of regex matches to a more readable object format.\n * @param {!Array} matches\n * @return {!Object}\n */\nfunction convertMatchesToObj(matches) {\n\treturn {\n\t\tmatch: matches[0],\n\t\tprefix: matches[1],\n\t\tname: matches[2],\n\t\tparamPattern: matches[3],\n\t\tunnamedPattern: matches[4],\n\t\tmodifier: matches[5]\n\t};\n}\n\n/**\n * Converts the given tokens parsed from a route format string to a regex.\n * @param {!Array} tokens\n * @return {!RegExp}\n */\nfunction convertTokensToRegex(tokens) {\n\tlet regex = '';\n\tfor (let i = 0; i < tokens.length; i++) {\n\t\tif (core.isString(tokens[i])) {\n\t\t\tregex += escape(tokens[i]);\n\t\t} else {\n\t\t\tlet capture = encloseNonCapturingGroup(tokens[i].pattern);\n\t\t\tif (tokens[i].repeat) {\n\t\t\t\tcapture += encloseNonCapturingGroup('\\\\/' + capture) + '*';\n\t\t\t}\n\t\t\tcapture = escape(tokens[i].prefix) + `(${capture})`;\n\t\t\tif (tokens[i].optional) {\n\t\t\t\tif (!tokens[i].partial) {\n\t\t\t\t\tcapture = encloseNonCapturingGroup(capture);\n\t\t\t\t}\n\t\t\t\tcapture += '?';\n\t\t\t}\n\t\t\tregex += capture;\n\t\t}\n\t}\n\treturn new RegExp('^' + makeTrailingSlashOptional(regex) + '$');\n}\n\n/**\n * Encloses the given regex pattern into a non capturing group.\n * @param {string} pattern\n * @return {string}\n */\nfunction encloseNonCapturingGroup(pattern) {\n\treturn `(?:${pattern})`;\n}\n\n/**\n * Escapes the given string to show up in the path regex.\n * @param {string} str\n * @return {string}\n */\nfunction escape(str) {\n\treturn str.replace(/([.+*?=^!:${}()[\\]|\\/\\\\])/g, '\\\\$1');\n}\n\n/**\n * Makes trailing slash optional on paths.\n * @param {string} regex\n * @param {string}\n */\nfunction makeTrailingSlashOptional(regex) {\n\tif (/\\/$/.test(regex)) {\n\t\tregex += '?';\n\t} else {\n\t\tregex += '\\\\/?';\n\t}\n\treturn regex;\n}\n\n/**\n * Parses the given route format string into tokens representing its contents.\n * @param {!Array|string} routeOrTokens Either a route format string or tokens\n * previously parsed via the `parse` function.\n * @return {!Array} An array of tokens that can be either plain\n * strings (part of the route) or objects containing informations on params.\n */\nexport function parse(routeOrTokens) {\n\tif (!core.isString(routeOrTokens)) {\n\t\treturn routeOrTokens;\n\t}\n\n\tconst route = routeOrTokens;\n\tlet unnamedCount = 0;\n\tconst tokens = [];\n\tlet currPath = '';\n\tlet index = 0;\n\n\tlet matches = REGEX.exec(route);\n\twhile (matches) {\n\t\tconst data = convertMatchesToObj(matches);\n\n\t\tcurrPath = route.slice(index, matches.index);\n\t\tindex = matches.index + data.match.length;\n\t\ttokens.push(currPath);\n\n\t\ttokens.push({\n\t\t\tname: data.name ? data.name : '' + unnamedCount++,\n\t\t\tpartial: route[index] && route[index] !== data.prefix,\n\t\t\tprefix: data.prefix || '',\n\t\t\tpattern: data.paramPattern || data.unnamedPattern || '[^\\\\/]+',\n\t\t\trepeat: data.modifier === '*' || data.modifier === '+',\n\t\t\toptional: data.modifier === '*' || data.modifier === '?'\n\t\t});\n\n\t\tmatches = REGEX.exec(route);\n\t}\n\n\tif (index < route.length) {\n\t\ttokens.push(route.substr(index));\n\t}\n\treturn tokens;\n}\n\n/**\n * Converts the given route format string to a regex that can extract param\n * data from paths matching it.\n * @param {!Array|string} routeOrTokens Either a route format string or tokens\n * previously parsed via the `parse` function.\n * @return {!RegExp}\n */\nexport function toRegex(routeOrTokens) {\n\treturn convertTokensToRegex(parse(routeOrTokens));\n}\n\n/**\n * Extracts data from the given path according to the specified route format.\n * @param {!Array|string} routeOrTokens Either a route format string or tokens\n * previously parsed via the `parse` function.\n * @param {string} The path to extract param data from.\n * @return {Object} The data object, or null if the path doesn't\n * match the given format.\n */\nexport function extractData(routeOrTokens, path) {\n\tconst data = {};\n\tconst tokens = parse(routeOrTokens);\n\tconst match = path.match(convertTokensToRegex(tokens));\n\n\tif (!match) {\n\t\treturn null;\n\t}\n\n\tlet paramIndex = 1;\n\tfor (let i = 0; i < tokens.length; i++) {\n\t\tif (!core.isString(tokens[i])) {\n\t\t\tlet value = match[paramIndex++];\n\t\t\tif (core.isDef(value)) {\n\t\t\t\tif (tokens[i].repeat) {\n\t\t\t\t\tvalue = value.split('/');\n\t\t\t\t}\n\t\t\t\tdata[tokens[i].name] = value;\n\t\t\t}\n\t\t}\n\t}\n\treturn data;\n}\n","'use strict';\n\nimport { core } from 'metal';\nimport { extractData, parse, toRegex } from 'metal-path-parser';\n\nclass Route {\n\n\t/**\n\t * Route class.\n\t * @param {!string|RegExp|Function} path\n\t * @param {!Function} handler\n\t * @constructor\n\t */\n\tconstructor(path, handler) {\n\t\tif (!core.isDefAndNotNull(path)) {\n\t\t\tthrow new Error('Route path not specified.');\n\t\t}\n\t\tif (!core.isFunction(handler)) {\n\t\t\tthrow new Error('Route handler is not a function.');\n\t\t}\n\n\t\t/**\n\t\t * Defines the handler which will execute once a URL in the application\n\t\t * matches the path.\n\t\t * @type {!Function}\n\t\t * @protected\n\t\t */\n\t\tthis.handler = handler;\n\n\t\t/**\n\t\t * Defines the path which will trigger the route handler.\n\t\t * @type {!string|RegExp|Function}\n\t\t * @protected\n\t\t */\n\t\tthis.path = path;\n\t}\n\n\t/**\n\t* Builds parsed data (regex and tokens) for this route.\n\t* @return {!Object}\n\t* @protected\n\t*/\n\tbuildParsedData_() {\n\t\tif (!this.parsedData_) {\n var tokens = parse(this.path);\n var regex = toRegex(tokens);\n\t\t\tthis.parsedData_ = {\n regex,\n tokens\n };\n\t\t}\n\t\treturn this.parsedData_;\n\t}\n\n\t/**\n\t * Extracts param data from the given path, according to this route.\n\t * @param {string} path The url path to extract params from.\n\t * @return {Object} The extracted data, if the path matches this route, or\n\t * null otherwise.\n\t */\n\textractParams(path) {\n\t\tif (core.isString(this.path)) {\n\t\t\treturn extractData(this.buildParsedData_().tokens, path);\n\t\t}\n\t\treturn {};\n\t}\n\n\t/**\n\t * Gets the route handler.\n\t * @return {!Function}\n\t */\n\tgetHandler() {\n\t\treturn this.handler;\n\t}\n\n\t/**\n\t * Gets the route path.\n\t * @return {!string|RegExp|Function}\n\t */\n\tgetPath() {\n\t\treturn this.path;\n\t}\n\n\t/**\n \t * Matches if the router can handle the tested path.\n \t * @param {!string} value Path to test (may contain the querystring part).\n\t * @return {boolean} Returns true if matches any route.\n\t */\n\tmatchesPath(value) {\n\t\tvar path = this.path;\n\n\t\tif (core.isFunction(path)) {\n\t\t\treturn path(value);\n\t\t}\n\t\tif (core.isString(path)) {\n\t\t\tpath = this.buildParsedData_().regex;\n\t\t}\n\t\tif (path instanceof RegExp) {\n\t\t\treturn value.search(path) > -1;\n\t\t}\n\n\t\treturn false;\n\t}\n\n}\n\nexport default Route;\n","'use strict';\n\nimport { Disposable } from 'metal';\n\nclass Cacheable extends Disposable {\n\n\t/**\n\t * Abstract class for defining cacheable behavior.\n\t * @constructor\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the cached data.\n\t\t * @type {!Object}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.cache = null;\n\n\t\t/**\n\t\t * Holds whether class is cacheable.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.cacheable = false;\n\t}\n\n\t/**\n\t * Adds content to the cache.\n\t * @param {string} content Content to be cached.\n\t * @chainable\n\t */\n\taddCache(content) {\n\t\tif (this.cacheable) {\n\t\t\tthis.cache = content;\n\t\t}\n\t\treturn this;\n\t}\n\n\t/**\n\t * Clears the cache.\n\t * @chainable\n\t */\n\tclearCache() {\n\t\tthis.cache = null;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.clearCache();\n\t}\n\n\t/**\n\t * Gets the cached content.\n\t * @return {Object} Cached content.\n\t * @protected\n\t */\n\tgetCache() {\n\t\treturn this.cache;\n\t}\n\n\t/**\n\t * Whether the class is cacheable.\n\t * @return {boolean} Returns true when class is cacheable, false otherwise.\n\t */\n\tisCacheable() {\n\t\treturn this.cacheable;\n\t}\n\n\t/**\n\t * Sets whether the class is cacheable.\n\t * @param {boolean} cacheable\n\t */\n\tsetCacheable(cacheable) {\n\t\tif (!cacheable) {\n\t\t\tthis.clearCache();\n\t\t}\n\t\tthis.cacheable = cacheable;\n\t}\n\n}\n\nexport default Cacheable;\n","'use strict';\n\nimport { core } from 'metal';\nimport { globalEval } from 'metal-dom';\nimport Cacheable from '../cacheable/Cacheable';\nimport CancellablePromise from 'metal-promise';\n\nclass Screen extends Cacheable {\n\n\t/**\n\t * Screen class is a special type of route handler that provides helper\n\t * utilities that adds lifecycle and methods to provide content to each\n\t * registered surface.\n\t * @constructor\n\t * @extends {Cacheable}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the screen id.\n\t\t * @type {string}\n\t\t * @protected\n\t\t */\n\t\tthis.id = this.makeId_(core.getUid());\n\n\t\t/**\n\t\t * Holds the screen title. Relevant when the page title should be\n\t\t * upadated when screen is rendered.\n\t\t * @type {?string=}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.title = null;\n\t}\n\n\t/**\n\t * Fires when the screen is active. Allows a screen to perform any setup\n\t * that requires its DOM to be visible. Lifecycle.\n\t */\n\tactivate() {\n\t\tconsole.log('Screen [' + this + '] activate');\n\t}\n\n\t/**\n\t * Gives the Screen a chance to cancel the navigation and stop itself from\n\t * being deactivated. Can be used, for example, if the screen has unsaved\n\t * state. Lifecycle. Clean-up should not be preformed here, since the\n\t * navigation may still be cancelled. Do clean-up in deactivate.\n\t * @return {boolean=} If returns true, the current screen is locked and the\n\t * next nagivation interrupted.\n\t */\n\tbeforeDeactivate() {\n\t\tconsole.log('Screen [' + this + '] beforeDeactivate');\n\t}\n\n\t/**\n\t * Gives the Screen a chance format the path before history update.\n\t * @path {!string} path Navigation path.\n\t * @return {!string} Navigation path to use on history.\n\t */\n\tbeforeUpdateHistoryPath(path) {\n\t\treturn path;\n\t}\n\n\t/**\n\t * Gives the Screen a chance format the state before history update.\n\t * @path {!object} state History state.\n\t * @return {!object} History state to use on history.\n\t */\n\tbeforeUpdateHistoryState(state) {\n\t\treturn state;\n\t}\n\n\t/**\n\t * Allows a screen to do any cleanup necessary after it has been\n\t * deactivated, for example cancelling outstanding requests or stopping\n\t * timers. Lifecycle.\n\t */\n\tdeactivate() {\n\t\tconsole.log('Screen [' + this + '] deactivate');\n\t}\n\n\t/**\n\t * Dispose a screen, either after it is deactivated (in the case of a\n\t * non-cacheable view) or when the App is itself disposed for whatever\n\t * reason. Lifecycle.\n\t */\n\tdisposeInternal() {\n\t\tsuper.disposeInternal();\n\t\tconsole.log('Screen [' + this + '] dispose');\n\t}\n\n\t/**\n\t * Allows a screen to evaluate scripts before the element is made visible.\n\t * Lifecycle.\n\t * @param {!object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @return {?CancellablePromise=} This can return a promise, which will\n\t * pause the navigation until it is resolved.\n\t */\n\tevaluateScripts(surfaces) {\n\t\tObject.keys(surfaces).forEach(sId => {\n\t\t\tif (surfaces[sId].activeChild) {\n\t\t\t\tglobalEval.runScriptsInElement(surfaces[sId].activeChild);\n\t\t\t}\n\t\t});\n\t\treturn CancellablePromise.resolve();\n\t}\n\n\t/**\n\t * Allows a screen to evaluate styles before the element is made visible.\n\t * Lifecycle.\n\t * @param {!object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @return {?CancellablePromise=} This can return a promise, which will\n\t * pause the navigation until it is resolved.\n\t */\n\tevaluateStyles() {\n\t\treturn CancellablePromise.resolve();\n\t}\n\n\t/**\n\t * Allows a screen to perform any setup immediately before the element is\n\t * made visible. Lifecycle.\n\t * @param {!object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @return {?CancellablePromise=} This can return a promise, which will pause the\n\t * navigation until it is resolved.\n\t */\n\tflip(surfaces) {\n\t\tconsole.log('Screen [' + this + '] flip');\n\n\t\tvar transitions = [];\n\n\t\tObject.keys(surfaces).forEach(sId => {\n\t\t\tvar surface = surfaces[sId];\n\t\t\tvar deferred = surface.show(this.id);\n\t\t\ttransitions.push(deferred);\n\t\t});\n\n\t\treturn CancellablePromise.all(transitions);\n\t}\n\n\t/**\n\t * Gets the screen id.\n\t * @return {string}\n\t */\n\tgetId() {\n\t\treturn this.id;\n\t}\n\n\t/**\n\t * Returns the content for the given surface, or null if the surface isn't\n\t * used by this screen. This will be called when a screen is initially\n\t * constructed or, if a screen is non-cacheable, when navigated.\n\t * @param {!string} surfaceId The id of the surface DOM element.\n\t * @param {!Object} params Params extracted from the current path.\n\t * @return {?string|Element=} This can return a string or node representing\n\t * the content of the surface. If returns falsy values surface default\n\t * content is restored.\n\t */\n\tgetSurfaceContent() {\n\t\tconsole.log('Screen [' + this + '] getSurfaceContent');\n\t}\n\n\t/**\n\t * Gets the screen title.\n\t * @return {?string=}\n\t */\n\tgetTitle() {\n\t\treturn this.title;\n\t}\n\n\t/**\n\t * Returns all contents for the surfaces. This will pass the loaded content\n\t * to Screen.load with all information you\n\t * need to fulfill the surfaces. Lifecycle.\n\t * @param {!string=} path The requested path.\n\t * @return {!CancellablePromise} This can return a string representing the\n\t * contents of the surfaces or a promise, which will pause the navigation\n\t * until it is resolved. This is useful for loading async content.\n\t */\n\tload() {\n\t\tconsole.log('Screen [' + this + '] load');\n\t\treturn CancellablePromise.resolve();\n\t}\n\n\t/**\n\t * Makes the id for the screen.\n\t * @param {!string} id The screen id the content belongs too.\n\t * @return {string}\n\t * @private\n\t */\n\tmakeId_(id) {\n\t\treturn 'screen_' + id;\n\t}\n\n\t/**\n\t * Sets the screen id.\n\t * @param {!string} id\n\t */\n\tsetId(id) {\n\t\tthis.id = id;\n\t}\n\n\t/**\n\t * Sets the screen title.\n\t * @param {?string=} title\n\t */\n\tsetTitle(title) {\n\t\tthis.title = title;\n\t}\n\n\t/**\n\t * @return {string}\n\t */\n\ttoString() {\n\t\treturn this.id;\n\t}\n\n}\n\n/**\n * @param {*} object\n * @return {boolean} Whether a given instance implements\n * Screen.\n */\nScreen.isImplementedBy = function(object) {\n\treturn object instanceof Screen;\n};\n\nexport default Screen;\n","'use strict';\n\nimport globals from '../globals/globals';\nimport { core, Disposable } from 'metal';\nimport dom from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\n\nclass Surface extends Disposable {\n\n\t/**\n\t * Surface class representing the references to elements on the page that\n\t * can potentially be updated by App.\n\t * @param {string} id\n\t * @constructor\n\t */\n\tconstructor(id) {\n\t\tsuper();\n\n\t\tif (!id) {\n\t\t\tthrow new Error('Surface element id not specified. A surface element requires a valid id.');\n\t\t}\n\n\t\t/**\n\t\t * Holds the active child element.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.activeChild = null;\n\n\t\t/**\n\t\t * Holds the default child element.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.defaultChild = null;\n\n\t\t/**\n\t\t * Holds the element with the specified surface id, if not found creates a\n\t\t * new element with the specified id.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.element = null;\n\n\t\t/**\n\t\t * Holds the surface id.\n\t\t * @type {String}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.id = id;\n\n\t\t/**\n\t\t * Holds the default transitionFn for the surfaces.\n\t\t * @param {?Element=} from The visible surface element.\n\t\t * @param {?Element=} to The surface element to be flipped.\n\t\t * @default null\n\t\t */\n\t\tthis.transitionFn = null;\n\n\t\tthis.defaultChild = this.getChild(Surface.DEFAULT);\n\t\tthis.maybeWrapContentAsDefault_();\n\t\tthis.activeChild = this.defaultChild;\n\t}\n\n\t/**\n\t * Adds screen content to a surface. If content hasn't been passed, see if\n\t * an element exists in the DOM that matches the id. By convention, the\n\t * element should already be nested in the right element and should have an\n\t * id that is a concatentation of the surface id + '-' + the screen id.\n\t * @param {!string} screenId The screen id the content belongs too.\n\t * @param {?string|Element=} opt_content The string content or element to\n\t * add be added as surface content.\n\t * @return {Element}\n\t */\n\taddContent(screenId, opt_content) {\n\t\tvar child = this.defaultChild;\n\n\t\tif (core.isDefAndNotNull(opt_content)) {\n\t\t\tchild = this.getChild(screenId);\n\t\t\tif (child) {\n\t\t\t\tdom.removeChildren(child);\n\t\t\t} else {\n\t\t\t\tchild = this.createChild(screenId);\n\t\t\t\tthis.transition(child, null);\n\t\t\t}\n\t\t\tdom.append(child, opt_content);\n\t\t}\n\n\t\tvar element = this.getElement();\n\n\t\tif (element && child) {\n\t\t\tdom.append(element, child);\n\t\t}\n\n\t\treturn child;\n\t}\n\n\t/**\n\t * Creates child node for the surface.\n\t * @param {!string} screenId The screen id.\n\t * @return {Element}\n\t */\n\tcreateChild(screenId) {\n\t\tvar child = globals.document.createElement('div');\n\t\tchild.setAttribute('id', this.makeId_(screenId));\n\t\treturn child;\n\t}\n\n\t/**\n\t * Gets child node of the surface.\n\t * @param {!string} screenId The screen id.\n\t * @return {?Element}\n\t */\n\tgetChild(screenId) {\n\t\treturn globals.document.getElementById(this.makeId_(screenId));\n\t}\n\n\t/**\n\t * Gets the surface element from element, and sets it to the el property of\n\t * the current instance.\n\t * this.element will be used.\n\t * @return {?Element} The current surface element.\n\t */\n\tgetElement() {\n\t\tif (this.element) {\n\t\t\treturn this.element;\n\t\t}\n\t\tthis.element = globals.document.getElementById(this.id);\n\t\treturn this.element;\n\t}\n\n\t/**\n\t * Gets the surface id.\n\t * @return {String}\n\t */\n\tgetId() {\n\t\treturn this.id;\n\t}\n\n\t/**\n\t * Gets the surface transition function.\n\t * See Surface.defaultTransition.\n\t * @return {?Function=} The transition function.\n\t */\n\tgetTransitionFn() {\n\t\treturn this.transitionFn;\n\t}\n\n\t/**\n\t * Makes the id for the element that holds content for a screen.\n\t * @param {!string} screenId The screen id the content belongs too.\n\t * @return {String}\n\t * @private\n\t */\n\tmakeId_(screenId) {\n\t\treturn this.id + '-' + screenId;\n\t}\n\n\t/**\n\t * If default child is missing, wraps surface content as default child. If\n\t * surface have static content, make sure to place a\n\t * surfaceId-default element inside surface, only contents\n\t * inside the default child will be replaced by navigation.\n\t */\n\tmaybeWrapContentAsDefault_() {\n\t\tvar element = this.getElement();\n\t\tif (element && !this.defaultChild) {\n\t\t\tvar fragment = globals.document.createDocumentFragment();\n\t\t\twhile (element.firstChild) {\n\t\t\t\tfragment.appendChild(element.firstChild);\n\t\t\t}\n\t\t\tthis.defaultChild = this.addContent(Surface.DEFAULT, fragment);\n\t\t\tthis.transition(null, this.defaultChild);\n\t\t}\n\t}\n\n\t/**\n\t * Sets the surface id.\n\t * @param {!string} id\n\t */\n\tsetId(id) {\n\t\tthis.id = id;\n\t}\n\n\t/**\n\t * Sets the surface transition function.\n\t * See Surface.defaultTransition.\n\t * @param {?Function=} transitionFn The transition function.\n\t */\n\tsetTransitionFn(transitionFn) {\n\t\tthis.transitionFn = transitionFn;\n\t}\n\n\t/**\n\t * Shows screen content from a surface.\n\t * @param {String} screenId The screen id to show.\n\t * @return {CancellablePromise} Pauses the navigation until it is resolved.\n\t */\n\tshow(screenId) {\n\t\tvar from = this.activeChild;\n\t\tvar to = this.getChild(screenId);\n\t\tif (!to) {\n\t\t\tto = this.defaultChild;\n\t\t}\n\t\tthis.activeChild = to;\n\t\treturn this.transition(from, to).thenAlways(() => {\n\t\t\tif (from && from !== to) {\n\t\t\t\tdom.exitDocument(from);\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Removes screen content from a surface.\n\t * @param {!string} screenId The screen id to remove.\n\t */\n\tremove(screenId) {\n\t\tvar child = this.getChild(screenId);\n\t\tif (child) {\n\t\t\tdom.exitDocument(child);\n\t\t}\n\t}\n\n\t/**\n\t * @return {String}\n\t */\n\ttoString() {\n\t\treturn this.id;\n\t}\n\n\t/**\n\t * Invokes the transition function specified on transition attribute.\n\t * @param {?Element=} from\n\t * @param {?Element=} to\n\t * @return {?CancellablePromise=} This can return a promise, which will pause the\n\t * navigation until it is resolved.\n\t */\n\ttransition(from, to) {\n\t\tvar transitionFn = this.transitionFn || Surface.defaultTransition;\n\t\treturn CancellablePromise.resolve(transitionFn.call(this, from, to));\n\t}\n\n}\n\n/**\n * Holds the default surface name. Elements on the page must contain a child\n * element containing the default content, this element must be as following:\n *\n * Example:\n * \n *
\n *
Default surface content.
\n *
\n * \n *\n * The default content is relevant for the initial page content. When a\n * screen doesn't provide content for the surface the default content is\n * restored into the page.\n *\n * @type {!String}\n * @default default\n * @static\n */\nSurface.DEFAULT = 'default';\n\n/**\n * Holds the default transition for all surfaces. Each surface could have its\n * own transition.\n *\n * Example:\n *\n * \n * surface.setTransitionFn(function(from, to) {\n * if (from) {\n * from.style.display = 'none';\n * from.classList.remove('flipped');\n * }\n * if (to) {\n * to.style.display = 'block';\n * to.classList.add('flipped');\n * }\n * return null;\n * });\n * \n *\n * @param {?Element=} from The visible surface element.\n * @param {?Element=} to The surface element to be flipped.\n * @static\n */\nSurface.defaultTransition = function(from, to) {\n\tif (from) {\n\t\tfrom.style.display = 'none';\n\t\tfrom.classList.remove('flipped');\n\t}\n\tif (to) {\n\t\tto.style.display = 'block';\n\t\tto.classList.add('flipped');\n\t}\n};\n\nexport default Surface;\n","'use strict';\n\nimport { array, async, core } from 'metal';\nimport debounce from 'metal-debounce';\nimport dom from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\nimport { EventEmitter, EventHandler } from 'metal-events';\nimport utils from '../utils/utils';\nimport globals from '../globals/globals';\nimport Route from '../route/Route';\nimport Screen from '../screen/Screen';\nimport Surface from '../surface/Surface';\nimport Uri from 'metal-uri';\n\nclass App extends EventEmitter {\n\n\t/**\n\t * App class that handle routes and screens lifecycle.\n\t * @constructor\n\t * @extends {EventEmitter}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the active screen.\n\t\t * @type {?Screen}\n\t\t * @protected\n\t\t */\n\t\tthis.activeScreen = null;\n\n\t\t/**\n\t\t * Holds the active path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.activePath = null;\n\n\t\t/**\n\t\t * Allows prevent navigate from dom prevented event.\n\t\t * @type {boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.allowPreventNavigate = true;\n\n\t\t/**\n\t\t * Holds link base path.\n\t\t * @type {!string}\n\t\t * @default ''\n\t\t * @protected\n\t\t */\n\t\tthis.basePath = '';\n\n\t\t/**\n\t\t * Captures scroll position from scroll event.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.captureScrollPositionFromScrollEvent = true;\n\n\t\t/**\n\t\t * Holds the default page title.\n\t\t * @type {string}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.defaultTitle = globals.document.title;\n\n\t\t/**\n\t\t * Holds the form selector to define forms that are routed.\n\t\t * @type {!string}\n\t\t * @default form[enctype=\"multipart/form-data\"]:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.formSelector = 'form[enctype=\"multipart/form-data\"]:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the link selector to define links that are routed.\n\t\t * @type {!string}\n\t\t * @default a:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.linkSelector = 'a:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the loading css class.\n\t\t * @type {!string}\n\t\t * @default senna-loading\n\t\t * @protected\n\t\t */\n\t\tthis.loadingCssClass = 'senna-loading';\n\n\t\t/**\n\t\t * Using the History API to manage your URLs is awesome and, as it happens,\n\t\t * a crucial feature of good web apps. One of its downsides, however, is\n\t\t * that scroll positions are stored and then, more importantly, restored\n\t\t * whenever you traverse the history. This often means unsightly jumps as\n\t\t * the scroll position changes automatically, and especially so if your app\n\t\t * does transitions, or changes the contents of the page in any way.\n\t\t * Ultimately this leads to an horrible user experience. The good news is,\n\t\t * however, that there’s a potential fix: history.scrollRestoration.\n\t\t * https://developers.google.com/web/updates/2015/09/history-api-scroll-restoration\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.nativeScrollRestorationSupported = ('scrollRestoration' in globals.window.history);\n\n\t\t/**\n\t\t * When set to true there is a pendingNavigate that has not yet been\n\t\t * resolved or rejected.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.isNavigationPending = false;\n\n\t\t/**\n\t\t * Holds a deferred with the current navigation.\n\t\t * @type {?CancellablePromise}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.pendingNavigate = null;\n\n\t\t/**\n\t\t * Holds the window horizontal scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollLeft = 0;\n\n\t\t/**\n\t\t * Holds the window vertical scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollTop = 0;\n\n\t\t/**\n\t\t * Holds the redirect path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.redirectPath = null;\n\n\t\t/**\n\t\t * Holds the screen routes configuration.\n\t\t * @type {?Array}\n\t\t * @default []\n\t\t * @protected\n\t\t */\n\t\tthis.routes = [];\n\n\t\t/**\n\t\t * Maps the screen instances by the url containing the parameters.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.screens = {};\n\n\t\t/**\n\t\t * When set to true the first erroneous popstate fired on page load will be\n\t\t * ignored, only if globals.window.history.state is also\n\t\t * null.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.skipLoadPopstate = false;\n\n\t\t/**\n\t\t * Maps that index the surfaces instances by the surface id.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.surfaces = {};\n\n\t\t/**\n\t\t * When set to true, moves the scroll position after popstate, or to the\n\t\t * top of the viewport for new navigation. If false, the browser will\n\t\t * take care of scroll restoration.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.updateScrollPosition = true;\n\n\t\tthis.appEventHandlers_ = new EventHandler();\n\n\t\tthis.appEventHandlers_.add(\n\t\t\tdom.on(globals.window, 'scroll', debounce(this.onScroll_.bind(this), 100)),\n\t\t\tdom.on(globals.window, 'load', this.onLoad_.bind(this)),\n\t\t\tdom.on(globals.window, 'popstate', this.onPopstate_.bind(this))\n\t\t);\n\n\t\tthis.on('startNavigate', this.onStartNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigateDefault_, true);\n\n\t\tthis.setLinkSelector(this.linkSelector);\n\t\tthis.setFormSelector(this.formSelector);\n\t}\n\n\t/**\n\t * Adds one or more screens to the application.\n\t *\n\t * Example:\n\t *\n\t * \n\t * app.addRoutes({ path: '/foo', handler: FooScreen });\n\t * or\n\t * app.addRoutes([{ path: '/foo', handler: function(route) { return new FooScreen(); } }]);\n\t * \n\t *\n\t * @param {Object} or {Array} routes Single object or an array of object.\n\t * Each object should contain path and screen.\n\t * The path should be a string or a regex that maps the\n\t * navigation route to a screen class definition (not an instance), e.g:\n\t * { path: \"/home:param1\", handler: MyScreen }\n\t * { path: /foo.+/, handler: MyScreen }\n\t * @chainable\n\t */\n\taddRoutes(routes) {\n\t\tif (!Array.isArray(routes)) {\n\t\t\troutes = [routes];\n\t\t}\n\t\troutes.forEach((route) => {\n\t\t\tif (!(route instanceof Route)) {\n\t\t\t\troute = new Route(route.path, route.handler);\n\t\t\t}\n\t\t\tthis.routes.push(route);\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds one or more surfaces to the application.\n\t * @param {Surface|String|Array.} surfaces\n\t * Surface element id or surface instance. You can also pass an Array\n\t * whichcontains surface instances or id. In case of ID, these should be\n\t * the id of surface element.\n\t * @chainable\n\t */\n\taddSurfaces(surfaces) {\n\t\tif (!Array.isArray(surfaces)) {\n\t\t\tsurfaces = [surfaces];\n\t\t}\n\t\tsurfaces.forEach((surface) => {\n\t\t\tif (core.isString(surface)) {\n\t\t\t\tsurface = new Surface(surface);\n\t\t\t}\n\t\t\tthis.surfaces[surface.getId()] = surface;\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns if can navigate to path.\n\t * @param {!string} url\n\t * @return {boolean}\n\t */\n\tcanNavigate(url) {\n\t\tvar path = utils.getUrlPath(url);\n\t\tvar uri = new Uri(url);\n\n\t\tif (!this.isLinkSameOrigin_(uri.getHostname())) {\n\t\t\tconsole.log('Offsite link clicked');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.isSameBasePath_(path)) {\n\t\t\tconsole.log('Link clicked outside app\\'s base path');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.findRoute(path)) {\n\t\t\tconsole.log('No route for ' + path);\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Clear screens cache.\n\t * @chainable\n\t */\n\tclearScreensCache() {\n\t\tObject.keys(this.screens).forEach((path) => {\n\t\t\tif (path === this.activePath) {\n\t\t\t\tthis.activeScreen.clearCache();\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Retrieves or create a screen instance to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {Screen}\n\t */\n\tcreateScreenInstance(path, route) {\n\t\tif (!this.pendingNavigate && path === this.activePath) {\n\t\t\tconsole.log('Already at destination, refresh navigation');\n\t\t\treturn this.activeScreen;\n\t\t}\n\t\t/* jshint newcap: false */\n\t\tvar screen = this.screens[path];\n\t\tif (!screen) {\n\t\t\tvar handler = route.getHandler();\n\t\t\tif (handler === Screen || Screen.isImplementedBy(handler.prototype)) {\n\t\t\t\tscreen = new handler();\n\t\t\t} else {\n\t\t\t\tscreen = handler(route) || new Screen();\n\t\t\t}\n\t\t\tconsole.log('Create screen for [' + path + '] [' + screen + ']');\n\t\t}\n\t\treturn screen;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisposeInternal() {\n\t\tif (this.activeScreen) {\n\t\t\tthis.removeScreen(this.activePath);\n\t\t}\n\t\tthis.clearScreensCache();\n\t\tthis.formEventHandler_.removeListener();\n\t\tthis.linkEventHandler_.removeListener();\n\t\tthis.appEventHandlers_.removeAllListeners();\n\t\tsuper.disposeInternal();\n\t}\n\n\t/**\n\t * Dispatches to the first route handler that matches the current path, if\n\t * any.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdispatch() {\n\t\treturn this.navigate(utils.getCurrentBrowserPath(), true);\n\t}\n\n\t/**\n\t * Starts navigation to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdoNavigate_(path, opt_replaceHistory) {\n\t\tif (this.activeScreen && this.activeScreen.beforeDeactivate()) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('Cancelled by active screen'));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tvar route = this.findRoute(path);\n\t\tif (!route) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('No route for ' + path));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tconsole.log('Navigate to [' + path + ']');\n\n\t\tthis.stopPendingNavigate_();\n\t\tthis.isNavigationPending = true;\n\n\t\tvar nextScreen = this.createScreenInstance(path, route);\n\n\t\treturn nextScreen.load(path)\n\t\t\t.then(() => {\n\t\t\t\tif (this.activeScreen) {\n\t\t\t\t\tthis.activeScreen.deactivate();\n\t\t\t\t}\n\t\t\t\tthis.prepareNavigateHistory_(path, nextScreen, opt_replaceHistory);\n\t\t\t\tthis.prepareNavigateSurfaces_(\n\t\t\t\t\tnextScreen,\n\t\t\t\t\tthis.surfaces,\n\t\t\t\t\troute.extractParams(path)\n\t\t\t\t);\n\t\t\t})\n\t\t\t.then(() => nextScreen.evaluateStyles(this.surfaces))\n\t\t\t.then(() => nextScreen.flip(this.surfaces))\n\t\t\t.then(() => nextScreen.evaluateScripts(this.surfaces))\n\t\t\t.then(() => this.syncScrollPositionSyncThenAsync_())\n\t\t\t.then(() => this.finalizeNavigate_(path, nextScreen))\n\t\t\t.catch((reason) => {\n\t\t\t\tthis.isNavigationPending = false;\n\t\t\t\tthis.handleNavigateError_(path, nextScreen, reason);\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * Finalizes a screen navigation.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @protected\n\t */\n\tfinalizeNavigate_(path, nextScreen) {\n\t\tnextScreen.activate();\n\n\t\tif (this.activeScreen && !this.activeScreen.isCacheable()) {\n\t\t\tif (this.activeScreen !== nextScreen) {\n\t\t\t\tthis.removeScreen(this.activePath);\n\t\t\t}\n\t\t}\n\n\t\tthis.activePath = path;\n\t\tthis.activeScreen = nextScreen;\n\t\tthis.screens[path] = nextScreen;\n\t\tthis.isNavigationPending = false;\n\t\tthis.pendingNavigate = null;\n\t\tglobals.capturedFormElement = null;\n\t\tconsole.log('Navigation done');\n\t}\n\n\t/**\n\t * Finds a route for the test path. Returns true if matches has a route,\n\t * otherwise returns null.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {?Object} Route handler if match any or null if the\n\t * path is the same as the current url and the path contains a fragment.\n\t */\n\tfindRoute(path) {\n\t\t// Prevents navigation if it's a hash change on the same url.\n\t\tif ((path.lastIndexOf('#') > -1) && utils.isCurrentBrowserPath(path)) {\n\t\t\treturn null;\n\t\t}\n\n\t\tpath = utils.getUrlPathWithoutHash(path);\n\n\t\t// Makes sure that the path substring will be in the expected format\n\t\t// (that is, will end with a \"/\").\n\t\tpath = utils.getUrlPathWithoutHash(path.substr(this.basePath.length));\n\n\t\tfor (var i = 0; i < this.routes.length; i++) {\n\t\t\tvar route = this.routes[i];\n\t\t\tif (route.matchesPath(path)) {\n\t\t\t\treturn route;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets allow prevent navigate.\n\t * @return {boolean}\n\t */\n\tgetAllowPreventNavigate() {\n\t\treturn this.allowPreventNavigate;\n\t}\n\n\t/**\n\t * Gets link base path.\n\t * @return {!string}\n\t */\n\tgetBasePath() {\n\t\treturn this.basePath;\n\t}\n\n\t/**\n\t * Gets the default page title.\n\t * @return {string} defaultTitle\n\t */\n\tgetDefaultTitle() {\n\t\treturn this.defaultTitle;\n\t}\n\n\t/**\n\t * Gets the form selector.\n\t * @return {!string}\n\t */\n\tgetFormSelector() {\n\t\treturn this.formSelector;\n\t}\n\n\t/**\n\t * Gets the link selector.\n\t * @return {!string}\n\t */\n\tgetLinkSelector() {\n\t\treturn this.linkSelector;\n\t}\n\n\t/**\n\t * Gets the loading css class.\n\t * @return {!string}\n\t */\n\tgetLoadingCssClass() {\n\t\treturn this.loadingCssClass;\n\t}\n\n\t/**\n\t * Gets the update scroll position value.\n\t * @return {boolean}\n\t */\n\tgetUpdateScrollPosition() {\n\t\treturn this.updateScrollPosition;\n\t}\n\n\t/**\n\t * Handle navigation error.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {!Error} error\n\t * @protected\n\t */\n\thandleNavigateError_(path, nextScreen, err) {\n\t\tconsole.log('Navigation error for [' + nextScreen + '] (' + err + ')');\n\t\tif (!utils.isCurrentBrowserPath(path)) {\n\t\t\tif (this.isNavigationPending && this.pendingNavigate) {\n\t\t\t\tthis.pendingNavigate.thenAlways(() => this.removeScreen(path), this);\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if app has routes.\n\t * @return {boolean}\n\t */\n\thasRoutes() {\n\t\treturn this.routes.length > 0;\n\t}\n\n\t/**\n\t * Tests if hostname is an offsite link.\n\t * @param {!string} hostname Link hostname to compare with\n\t * globals.window.location.hostname.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisLinkSameOrigin_(hostname) {\n\t\treturn hostname === globals.window.location.hostname;\n\t}\n\n\t/**\n\t * Tests if link element has the same app's base path.\n\t * @param {!string} path Link path containing the querystring part.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisSameBasePath_(path) {\n\t\treturn path.indexOf(this.basePath) === 0;\n\t}\n\n\t/**\n\t * Lock the document scroll in order to avoid the browser native back and\n\t * forward navigation to change the scroll position. In the end of\n\t * navigation lifecycle scroll is repositioned.\n\t * @protected\n\t */\n\tlockHistoryScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\t\t// Browsers are inconsistent when re-positioning the scroll history on\n\t\t// popstate. At some browsers, history scroll happens before popstate, then\n\t\t// lock the scroll on the last known position as soon as possible after the\n\t\t// current JS execution context and capture the current value. Some others,\n\t\t// history scroll happens after popstate, in this case, we bind an once\n\t\t// scroll event to lock the las known position. Lastly, the previous two\n\t\t// behaviors can happen even on the same browser, hence the race will decide\n\t\t// the winner.\n\t\tvar winner = false;\n\t\tvar switchScrollPositionRace = function() {\n\t\t\tglobals.document.removeEventListener('scroll', switchScrollPositionRace, false);\n\t\t\tif (!winner) {\n\t\t\t\tglobals.window.scrollTo(state.scrollLeft, state.scrollTop);\n\t\t\t\twinner = true;\n\t\t\t}\n\t\t};\n\t\tasync.nextTick(switchScrollPositionRace);\n\t\tglobals.document.addEventListener('scroll', switchScrollPositionRace, false);\n\t}\n\n\t/**\n\t * If supported by the browser, disables native scroll restoration and\n\t * stores current value.\n\t */\n\tmaybeDisableNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported) {\n\t\t\tthis.nativeScrollRestoration_ = globals.window.history.scrollRestoration;\n\t\t\tglobals.window.history.scrollRestoration = 'manual';\n\t\t}\n\t}\n\n\t/**\n\t * Maybe navigate to a path.\n\t * @param {string} href Information about the link's href.\n\t * @param {Event} event Dom event that initiated the navigation.\n\t */\n\tmaybeNavigate_(href, event) {\n\t\tif (!this.canNavigate(href)) {\n\t\t\treturn;\n\t\t}\n\n\t\tglobals.capturedFormElement = event.capturedFormElement;\n\n\t\tvar navigateFailed = false;\n\t\ttry {\n\t\t\tthis.navigate(utils.getUrlPath(href));\n\t\t} catch (err) {\n\t\t\t// Do not prevent link navigation in case some synchronous error occurs\n\t\t\tnavigateFailed = true;\n\t\t}\n\n\t\tif (!navigateFailed) {\n\t\t\tevent.preventDefault();\n\t\t}\n\t}\n\n\t/**\n\t * Maybe reposition scroll to hashed anchor.\n\t */\n\tmaybeRepositionScrollToHashedAnchor() {\n\t\tvar hash = globals.window.location.hash;\n\t\tif (hash) {\n\t\t\tvar anchorElement = globals.document.getElementById(hash.substring(1));\n\t\t\tif (anchorElement) {\n\t\t\t\tglobals.window.scrollTo(anchorElement.offsetLeft, anchorElement.offsetTop);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * If supported by the browser, restores native scroll restoration to the\n\t * value captured by `maybeDisableNativeScrollRestoration`.\n\t */\n\tmaybeRestoreNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported && this.nativeScrollRestoration_) {\n\t\t\tglobals.window.history.scrollRestoration = this.nativeScrollRestoration_;\n\t\t}\n\t}\n\n\t/**\n\t * Navigates to the specified path if there is a route handler that matches.\n\t * @param {!string} path Path to navigate containing the base path.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tnavigate(path, opt_replaceHistory) {\n\t\tif (!utils.isHtml5HistorySupported()) {\n\t\t\tthrow new Error('HTML5 History is not supported. Senna will not intercept navigation.');\n\t\t}\n\n\t\t// When reloading the same path do replaceState instead of pushState to\n\t\t// avoid polluting history with states with the same path.\n\t\tif (path === this.activePath) {\n\t\t\topt_replaceHistory = true;\n\t\t}\n\n\t\tthis.emit('beforeNavigate', {\n\t\t\tpath: path,\n\t\t\treplaceHistory: !!opt_replaceHistory\n\t\t});\n\n\t\treturn this.pendingNavigate;\n\t}\n\n\t/**\n\t * Befores navigation to a path.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonBeforeNavigate_(event) {\n\t\tif (globals.capturedFormElement) {\n\t\t\tevent.form = globals.capturedFormElement;\n\t\t}\n\t}\n\n\t/**\n\t * Befores navigation to a path. Runs after external listeners.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonBeforeNavigateDefault_(event) {\n\t\tif (this.pendingNavigate) {\n\t\t\tif (this.pendingNavigate.path === event.path) {\n\t\t\t\tconsole.log('Waiting...');\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\tthis.emit('startNavigate', {\n\t\t\tform: event.form,\n\t\t\tpath: event.path,\n\t\t\treplaceHistory: event.replaceHistory\n\t\t});\n\t}\n\n\t/**\n\t * Intercepts document clicks and test link elements in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocClickDelegate_(event) {\n\t\tif (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey || event.button) {\n\t\t\tconsole.log('Navigate aborted, invalid mouse button or modifier key pressed.');\n\t\t\treturn;\n\t\t}\n\t\tthis.maybeNavigate_(event.delegateTarget.href, event);\n\t}\n\n\t/**\n\t * Intercepts document form submits and test action path in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocSubmitDelegate_(event) {\n\t\tvar form = event.delegateTarget;\n\t\tif (form.method === 'get') {\n\t\t\tconsole.log('GET method not supported');\n\t\t\treturn;\n\t\t}\n\t\tevent.capturedFormElement = form;\n\t\tthis.maybeNavigate_(form.action, event);\n\t}\n\n\t/**\n\t * Listens to the window's load event in order to avoid issues with some browsers\n\t * that trigger popstate calls on the first load. For more information see\n\t * http://stackoverflow.com/questions/6421769/popstate-on-pages-load-in-chrome.\n\t * @protected\n\t */\n\tonLoad_() {\n\t\tthis.skipLoadPopstate = true;\n\t\tsetTimeout(() => {\n\t\t\t// The timeout ensures that popstate events will be unblocked right\n\t\t\t// after the load event occured, but not in the same event-loop cycle.\n\t\t\tthis.skipLoadPopstate = false;\n\t\t}, 0);\n\t\t// Try to reposition scroll to the hashed anchor when page loads.\n\t\tthis.maybeRepositionScrollToHashedAnchor();\n\t}\n\n\t/**\n\t * Handles browser history changes and fires app's navigation if the state\n\t * belows to us. If we detect a popstate and the state is null,\n\t * assume it is navigating to an external page or to a page we don't have\n\t * route, then globals.window.location.reload() is invoked in order to\n\t * reload the content to the current url.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonPopstate_(event) {\n\t\tif (this.skipLoadPopstate) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar state = event.state;\n\n\t\tif (!state) {\n\t\t\tif (globals.window.location.hash) {\n\t\t\t\t// If senna is on an redirect path and a hash popstate happens\n\t\t\t\t// to a different url, reload the browser. This behavior doesn't\n\t\t\t\t// require senna to route hashed links and is closer to native\n\t\t\t\t// browser behavior.\n\t\t\t\tif (this.redirectPath && !utils.isCurrentBrowserPath(this.redirectPath)) {\n\t\t\t\t\tthis.reloadPage();\n\t\t\t\t}\n\t\t\t\t// Always try to reposition scroll to the hashed anchor when\n\t\t\t\t// hash popstate happens.\n\t\t\t\tthis.maybeRepositionScrollToHashedAnchor();\n\t\t\t} else {\n\t\t\t\tthis.reloadPage();\n\t\t\t}\n\t\t\treturn;\n\t\t}\n\n\t\tif (state.senna) {\n\t\t\tconsole.log('History navigation to [' + state.path + ']');\n\t\t\tthis.popstateScrollTop = state.scrollTop;\n\t\t\tthis.popstateScrollLeft = state.scrollLeft;\n\t\t\tif (!this.nativeScrollRestorationSupported) {\n\t\t\t\tthis.lockHistoryScrollPosition_();\n\t\t\t}\n\t\t\tthis.navigate(state.path, true);\n\t\t}\n\t}\n\n\t/**\n\t * Listens document scroll changes in order to capture the possible lock\n\t * scroll position for history scrolling.\n\t * @protected\n\t */\n\tonScroll_() {\n\t\tif (this.captureScrollPositionFromScrollEvent) {\n\t\t\tthis.saveHistoryCurrentPageScrollPosition_();\n\t\t}\n\t}\n\n\t/**\n\t * Starts navigation to a path.\n\t * @param {!Event} event Event facade containing path and\n\t * replaceHistory.\n\t * @protected\n\t */\n\tonStartNavigate_(event) {\n\t\tthis.maybeDisableNativeScrollRestoration();\n\t\tthis.captureScrollPositionFromScrollEvent = false;\n\t\tdom.addClasses(globals.document.documentElement, this.loadingCssClass);\n\n\t\tvar endNavigatePayload = {\n\t\t\tform: event.form,\n\t\t\tpath: event.path\n\t\t};\n\n\t\tthis.pendingNavigate = this.doNavigate_(event.path, event.replaceHistory)\n\t\t\t.catch((reason) => {\n\t\t\t\tendNavigatePayload.error = reason;\n\t\t\t\tthrow reason;\n\t\t\t})\n\t\t\t.thenAlways(() => {\n\t\t\t\tif (!this.pendingNavigate) {\n\t\t\t\t\tdom.removeClasses(globals.document.documentElement, this.loadingCssClass);\n\t\t\t\t\tthis.maybeRestoreNativeScrollRestoration();\n\t\t\t\t\tthis.captureScrollPositionFromScrollEvent = true;\n\t\t\t\t}\n\t\t\t\tthis.emit('endNavigate', endNavigatePayload);\n\t\t\t});\n\n\t\tthis.pendingNavigate.path = event.path;\n\t}\n\n\t/**\n\t * Prefetches the specified path if there is a route handler that matches.\n\t * @param {!string} path Path to navigate containing the base path.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tprefetch(path) {\n\t\tvar route = this.findRoute(path);\n\t\tif (!route) {\n\t\t\treturn CancellablePromise.reject(new CancellablePromise.CancellationError('No route for ' + path));\n\t\t}\n\n\t\tconsole.log('Prefetching [' + path + ']');\n\n\t\tvar nextScreen = this.createScreenInstance(path, route);\n\n\t\treturn nextScreen.load(path)\n\t\t\t.then(() => this.screens[path] = nextScreen)\n\t\t\t.catch((reason) => {\n\t\t\t\tthis.handleNavigateError_(path, nextScreen, reason);\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * Prepares screen flip. Updates history state and surfaces content.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t */\n\tprepareNavigateHistory_(path, nextScreen, opt_replaceHistory) {\n\t\tvar title = nextScreen.getTitle();\n\t\tif (!core.isString(title)) {\n\t\t\ttitle = this.getDefaultTitle();\n\t\t}\n\t\tvar redirectPath = nextScreen.beforeUpdateHistoryPath(path);\n\t\tvar historyState = {\n\t\t\tform: core.isDefAndNotNull(globals.capturedFormElement),\n\t\t\tredirectPath: redirectPath,\n\t\t\tpath: path,\n\t\t\tsenna: true,\n\t\t\tscrollTop: 0,\n\t\t\tscrollLeft: 0\n\t\t};\n\t\tif (opt_replaceHistory) {\n\t\t\thistoryState.scrollTop = this.popstateScrollTop;\n\t\t\thistoryState.scrollLeft = this.popstateScrollLeft;\n\t\t}\n\t\tthis.updateHistory_(title, redirectPath, nextScreen.beforeUpdateHistoryState(historyState), opt_replaceHistory);\n\t\tthis.redirectPath = redirectPath;\n\t}\n\n\t/**\n\t * Prepares screen flip. Updates history state and surfaces content.\n\t * @param {!Screen} nextScreen\n\t * @param {!Object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @param {!Object} params Params extracted from the current path.\n\t */\n\tprepareNavigateSurfaces_(nextScreen, surfaces, params) {\n\t\tObject.keys(surfaces).forEach((id) => {\n\t\t\tvar surfaceContent = nextScreen.getSurfaceContent(id, params);\n\t\t\tsurfaces[id].addContent(nextScreen.getId(), surfaceContent);\n\t\t\tconsole.log('Screen [' + nextScreen.getId() + '] add content to surface ' +\n\t\t\t\t'[' + surfaces[id] + '] [' + (core.isDefAndNotNull(surfaceContent) ? '...' : 'empty') + ']');\n\t\t});\n\t}\n\n\t/**\n\t * Reloads the page by performing `window.location.reload()`.\n\t */\n\treloadPage() {\n\t\tglobals.window.location.reload();\n\t}\n\n\t/**\n\t * Removes route instance from app routes.\n\t * @param {Route} route\n\t * @return {boolean} True if an element was removed.\n\t */\n\tremoveRoute(route) {\n\t\treturn array.remove(this.routes, route);\n\t}\n\n\t/**\n\t * Removes a screen.\n\t * @param {!string} path Path containing the querystring part.\n\t */\n\tremoveScreen(path) {\n\t\tvar screen = this.screens[path];\n\t\tif (screen) {\n\t\t\tObject.keys(this.surfaces).forEach((surfaceId) => this.surfaces[surfaceId].remove(screen.getId()));\n\t\t\tscreen.dispose();\n\t\t\tdelete this.screens[path];\n\t\t}\n\t}\n\n\t/**\n\t * Saves scroll position from page offset into history state.\n\t */\n\tsaveHistoryCurrentPageScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (state && state.senna) {\n\t\t\tstate.scrollTop = globals.window.pageYOffset;\n\t\t\tstate.scrollLeft = globals.window.pageXOffset;\n\t\t\tglobals.window.history.replaceState(state, null, null);\n\t\t}\n\t}\n\n\t/**\n\t * Sets allow prevent navigate.\n\t * @param {boolean} allowPreventNavigate\n\t */\n\tsetAllowPreventNavigate(allowPreventNavigate) {\n\t\tthis.allowPreventNavigate = allowPreventNavigate;\n\t}\n\n\t/**\n\t * Sets link base path.\n\t * @param {!string} path\n\t */\n\tsetBasePath(basePath) {\n\t\tthis.basePath = basePath;\n\t}\n\n\t/**\n\t * Sets the default page title.\n\t * @param {string} defaultTitle\n\t */\n\tsetDefaultTitle(defaultTitle) {\n\t\tthis.defaultTitle = defaultTitle;\n\t}\n\n\t/**\n\t * Sets the form selector.\n\t * @param {!string} formSelector\n\t */\n\tsetFormSelector(formSelector) {\n\t\tthis.formSelector = formSelector;\n\t\tif (this.formEventHandler_) {\n\t\t\tthis.formEventHandler_.removeListener();\n\t\t}\n\t\tthis.formEventHandler_ = dom.delegate(document, 'submit', this.formSelector, this.onDocSubmitDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the link selector.\n\t * @param {!string} linkSelector\n\t */\n\tsetLinkSelector(linkSelector) {\n\t\tthis.linkSelector = linkSelector;\n\t\tif (this.linkEventHandler_) {\n\t\t\tthis.linkEventHandler_.removeListener();\n\t\t}\n\t\tthis.linkEventHandler_ = dom.delegate(document, 'click', this.linkSelector, this.onDocClickDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the loading css class.\n\t * @param {!string} loadingCssClass\n\t */\n\tsetLoadingCssClass(loadingCssClass) {\n\t\tthis.loadingCssClass = loadingCssClass;\n\t}\n\n\t/**\n\t * Sets the update scroll position value.\n\t * @param {boolean} updateScrollPosition\n\t */\n\tsetUpdateScrollPosition(updateScrollPosition) {\n\t\tthis.updateScrollPosition = updateScrollPosition;\n\t}\n\n\t/**\n\t * Cancels pending navigate with Cancel pending navigation error.\n\t * @protected\n\t */\n\tstopPendingNavigate_() {\n\t\tif (this.pendingNavigate) {\n\t\t\tthis.pendingNavigate.cancel('Cancel pending navigation');\n\t\t\tthis.pendingNavigate = null;\n\t\t}\n\t}\n\n\t/**\n\t * Sync document scroll position twice, the first one synchronous and then\n\t * one inside async.nextTick. Relevant to browsers that fires\n\t * scroll restoration asynchronously after popstate.\n\t * @protected\n\t * @return {?CancellablePromise=}\n\t */\n\tsyncScrollPositionSyncThenAsync_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar scrollTop = state.scrollTop;\n\t\tvar scrollLeft = state.scrollLeft;\n\n\t\tvar sync = () => {\n\t\t\tif (this.updateScrollPosition) {\n\t\t\t\tglobals.window.scrollTo(scrollLeft, scrollTop);\n\t\t\t}\n\t\t};\n\n\t\treturn new CancellablePromise((resolve) => sync() & async.nextTick(() => sync() & resolve()));\n\t}\n\n\t/**\n\t * Updates or replace browser history.\n\t * @param {?string} title Document title.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!object} state\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @protected\n\t */\n\tupdateHistory_(title, path, state, opt_replaceHistory) {\n\t\tif (opt_replaceHistory) {\n\t\t\tglobals.window.history.replaceState(state, title, path);\n\t\t} else {\n\t\t\tglobals.window.history.pushState(state, title, path);\n\t\t}\n\t\tglobals.document.title = title;\n\t}\n\n}\n\nexport default App;\n","'use strict';\n\nimport { isDef, isDefAndNotNull } from 'metal';\nimport Uri from 'metal-uri';\nimport { CancellablePromise as Promise } from 'metal-promise';\n\nclass Ajax {\n\n\t/**\n\t * XmlHttpRequest's getAllResponseHeaders() method returns a string of\n\t * response headers according to the format described on the spec:\n\t * {@link http://www.w3.org/TR/XMLHttpRequest/#the-getallresponseheaders-method}.\n\t * This method parses that string into a user-friendly name/value pair\n\t * object.\n\t * @param {string} allHeaders All headers as string.\n\t * @return {!Array.>}\n\t */\n\tstatic parseResponseHeaders(allHeaders) {\n\t\tvar headers = [];\n\t\tif (!allHeaders) {\n\t\t\treturn headers;\n\t\t}\n\t\tvar pairs = allHeaders.split('\\u000d\\u000a');\n\t\tfor (var i = 0; i < pairs.length; i++) {\n\t\t\tvar index = pairs[i].indexOf('\\u003a\\u0020');\n\t\t\tif (index > 0) {\n\t\t\t\tvar name = pairs[i].substring(0, index);\n\t\t\t\tvar value = pairs[i].substring(index + 2);\n\t\t\t\theaders.push({\n\t\t\t\t\tname: name,\n\t\t\t\t\tvalue: value\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\t\treturn headers;\n\t}\n\n\t/**\n\t * Requests the url using XMLHttpRequest.\n\t * @param {!string} url\n\t * @param {!string} method\n\t * @param {?string} body\n\t * @param {MultiMap=} opt_headers\n\t * @param {MultiMap=} opt_params\n\t * @param {number=} opt_timeout\n\t * @param {boolean=} opt_sync\n\t * @param {boolean=} opt_withCredentials\n\t * @return {Promise} Deferred ajax request.\n\t * @protected\n\t */\n\tstatic request(url, method, body, opt_headers, opt_params, opt_timeout, opt_sync, opt_withCredentials) {\n\t\turl = url || '';\n\t\tmethod = method || 'GET';\n\n\t\tvar request = new XMLHttpRequest();\n\n\t\tvar promise = new Promise(function(resolve, reject) {\n\t\t\trequest.onload = function() {\n\t\t\t\tif (request.aborted) {\n\t\t\t\t\trequest.onerror();\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t\tresolve(request);\n\t\t\t};\n\t\t\trequest.onerror = function() {\n\t\t\t\tvar error = new Error('Request error');\n\t\t\t\terror.request = request;\n\t\t\t\treject(error);\n\t\t\t};\n\t\t}).thenCatch(function(reason) {\n\t\t\trequest.abort();\n\t\t\tthrow reason;\n\t\t}).thenAlways(function() {\n\t\t\tclearTimeout(timeout);\n\t\t});\n\n\t\tif (opt_params) {\n\t\t\turl = new Uri(url).addParametersFromMultiMap(opt_params).toString();\n\t\t}\n\n\t\trequest.open(method, url, !opt_sync);\n\n\t\tif (opt_withCredentials) {\n\t\t\trequest.withCredentials = true;\n\t\t}\n\n\t\tif (opt_headers) {\n\t\t\topt_headers.names().forEach(function(name) {\n\t\t\t\trequest.setRequestHeader(name, opt_headers.getAll(name).join(', '));\n\t\t\t});\n\t\t}\n\n\t\trequest.send(isDef(body) ? body : null);\n\n\t\tif (isDefAndNotNull(opt_timeout)) {\n\t\t\tvar timeout = setTimeout(function() {\n\t\t\t\tpromise.cancel('Request timeout');\n\t\t\t}, opt_timeout);\n\t\t}\n\n\t\treturn promise;\n\t}\n\n}\n\nexport default Ajax;\n","'use strict';\n\n/**\n * Holds value error messages.\n * @const\n */\nclass errors {\n}\n\n/**\n * Invalid status error message.\n * @type {string}\n * @static\n */\nerrors.INVALID_STATUS = 'Invalid status code';\n\n/**\n * Request error message.\n * @type {string}\n * @static\n */\nerrors.REQUEST_ERROR = 'Request error';\n\n/**\n * Request timeout error message.\n * @type {string}\n * @static\n */\nerrors.REQUEST_TIMEOUT = 'Request timeout';\n\nexport default errors;","'use strict';\n\n/**\n * Metal.js browser user agent detection. It's extremely recommended the usage\n * of feature checking over browser user agent sniffing. Unfortunately, in some\n * situations feature checking can be slow or even impossible, therefore use\n * this utility with caution.\n * @see User agent strings.\n */\nclass UA {\n\t/**\n\t * Gets the native userAgent string from navigator if it exists. If\n\t * navigator or navigator.userAgent string is missing, returns an empty\n\t * string.\n\t * @return {string}\n\t * @private\n\t * @static\n\t */\n\tstatic getNativeUserAgent() {\n\t\tvar navigator = UA.globals.window.navigator;\n\t\tif (navigator) {\n\t\t\tvar userAgent = navigator.userAgent;\n\t\t\tif (userAgent) {\n\t\t\t\treturn userAgent;\n\t\t\t}\n\t\t}\n\t\treturn '';\n\t}\n\n\t/**\n\t * Gets the native platform string from navigator if it exists. If\n\t * navigator or navigator.platform string is missing, returns an empty\n\t * string.\n\t * @return {string}\n\t * @private\n\t * @static\n\t */\n\tstatic getNativePlatform() {\n\t\tvar navigator = UA.globals.window.navigator;\n\t\tif (navigator) {\n\t\t\tvar platform = navigator.platform;\n\t\t\tif (platform) {\n\t\t\t\treturn platform;\n\t\t\t}\n\t\t}\n\t\treturn '';\n\t}\n\n\t/**\n\t * Whether the platform contains the given string, ignoring case.\n\t * @param {string} str\n\t * @return {boolean}\n\t * @private\n\t * @static\n\t*/\n\tstatic matchPlatform(str) {\n\t\treturn UA.platform.indexOf(str) !== -1;\n\t}\n\n\t/**\n\t * Whether the user agent contains the given string, ignoring case.\n\t * @param {string} str\n\t * @return {boolean}\n\t * @private\n\t * @static\n\t*/\n\tstatic matchUserAgent(str) {\n\t\treturn UA.userAgent.indexOf(str) !== -1;\n\t}\n\n\t/**\n\t * Tests the user agent.\n\t * @param {string} userAgent The user agent string.\n\t * @static\n\t */\n\tstatic testUserAgent(userAgent = '', platform = '') {\n\t\t/**\n\t\t * Holds the user agent value extracted from browser native user agent.\n\t\t * @type {string}\n\t\t * @static\n\t\t */\n\t\tUA.userAgent = userAgent;\n\n\t\t/**\n\t\t * Holds the platform value extracted from browser native platform.\n\t\t * @type {string}\n\t\t * @static\n\t\t */\n\t\tUA.platform = platform;\n\n\t\t/**\n\t\t * Whether the user's OS is Mac.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isMac = UA.matchPlatform('Mac');\n\n\t\t/**\n\t\t * Whether the user's OS is Win.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isWin = UA.matchPlatform('Win');\n\n\t\t/**\n\t\t * Whether the user's browser is Opera.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isOpera = UA.matchUserAgent('Opera') || UA.matchUserAgent('OPR');\n\n\t\t/**\n\t\t * Whether the user's browser is IE.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isIe = UA.matchUserAgent('Trident') || UA.matchUserAgent('MSIE');\n\n\t\t/**\n\t\t * Whether the user's browser is Edge.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isEdge = UA.matchUserAgent('Edge');\n\n\t\t/**\n\t\t * Whether the user's browser is IE or Edge.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isIeOrEdge = UA.isIe || UA.isEdge;\n\n\t\t/**\n\t\t * Whether the user's browser is Chrome.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isChrome = (UA.matchUserAgent('Chrome') || UA.matchUserAgent('CriOS')) && !UA.isOpera && !UA.isEdge;\n\n\t\t/**\n\t\t * Whether the user's browser is Safari.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isSafari = UA.matchUserAgent('Safari') && !(UA.isChrome || UA.isOpera || UA.isEdge);\n\n\t\t/**\n\t\t * Whether the user's browser is Firefox.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isFirefox = UA.matchUserAgent('Firefox');\n\t}\n}\n\n/**\n * Exposes global references.\n * @type {object}\n * @static\n */\nUA.globals = {\n\twindow: window\n};\n\nUA.testUserAgent(UA.getNativeUserAgent(), UA.getNativePlatform());\n\nexport default UA;\n","'use strict';\n\nimport { core } from 'metal';\nimport Ajax from 'metal-ajax';\nimport { MultiMap } from 'metal-structs';\nimport CancellablePromise from 'metal-promise';\nimport errors from '../errors/errors';\nimport utils from '../utils/utils';\nimport globals from '../globals/globals';\nimport Screen from './Screen';\nimport Uri from 'metal-uri';\nimport UA from 'metal-useragent';\n\nclass RequestScreen extends Screen {\n\n\t/**\n\t * Request screen abstract class to perform io operations on descendant\n\t * screens.\n\t * @constructor\n\t * @extends {Screen}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * @inheritDoc\n\t\t * @default true\n\t\t */\n\t\tthis.cacheable = true;\n\n\t\t/**\n\t\t * Holds default http headers to set on request.\n\t\t * @type {?Object=}\n\t\t * @default {\n\t\t * 'X-PJAX': 'true',\n\t\t * 'X-Requested-With': 'XMLHttpRequest'\n\t\t * }\n\t\t * @protected\n\t\t */\n\t\tthis.httpHeaders = {\n\t\t\t'X-PJAX': 'true',\n\t\t\t'X-Requested-With': 'XMLHttpRequest'\n\t\t};\n\n\t\t/**\n\t\t * Holds default http method to perform the request.\n\t\t * @type {!string}\n\t\t * @default RequestScreen.GET\n\t\t * @protected\n\t\t */\n\t\tthis.httpMethod = RequestScreen.GET;\n\n\t\t/**\n\t\t * Holds the XHR object responsible for the request.\n\t\t * @type {XMLHttpRequest}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.request = null;\n\n\t\t/**\n\t\t * Holds the request timeout in milliseconds.\n\t\t * @type {!number}\n\t\t * @default 30000\n\t\t * @protected\n\t\t */\n\t\tthis.timeout = 30000;\n\t}\n\n\t/**\n\t * Asserts that response status code is valid.\n\t * @param {number} status\n\t * @protected\n\t */\n\tassertValidResponseStatusCode(status) {\n\t\tif (!this.isValidResponseStatusCode(status)) {\n\t\t\tvar error = new Error(errors.INVALID_STATUS);\n\t\t\terror.invalidStatus = true;\n\t\t\tthrow error;\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tbeforeUpdateHistoryPath(path) {\n\t\tvar redirectPath = this.getRequestPath();\n\t\tif (redirectPath && redirectPath !== path) {\n\t\t\treturn redirectPath;\n\t\t}\n\t\treturn path;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tbeforeUpdateHistoryState(state) {\n\t\t// If state is ours and navigate to post-without-redirect-get set\n\t\t// history state to null, that way Senna will reload the page on\n\t\t// popstate since it cannot predict post data.\n\t\tif (state.senna && state.form && state.redirectPath === state.path) {\n\t\t\treturn null;\n\t\t}\n\t\treturn state;\n\t}\n\n\t/**\n\t * Formats load path before invoking ajax call.\n\t * @param {string} path\n\t * @return {string} Formatted path;\n\t * @protected\n\t */\n\tformatLoadPath(path) {\n\t\tvar uri = new Uri(path);\n\n\t\turi.setHostname(globals.window.location.hostname);\n\t\turi.setProtocol(globals.window.location.protocol);\n\n\t\tif (globals.window.location.port) {\n\t\t\turi.setPort(globals.window.location.port);\n\t\t}\n\n\t\tif (UA.isIeOrEdge && this.httpMethod === RequestScreen.GET) {\n\t\t\treturn uri.makeUnique().toString();\n\t\t}\n\n\t\treturn uri.toString();\n\t}\n\n\t/**\n\t * Gets the http headers.\n\t * @return {?Object=}\n\t */\n\tgetHttpHeaders() {\n\t\treturn this.httpHeaders;\n\t}\n\n\t/**\n\t * Gets the http method.\n\t * @return {!string}\n\t */\n\tgetHttpMethod() {\n\t\treturn this.httpMethod;\n\t}\n\n\t/**\n\t * Gets request path.\n\t * @return {string=}\n\t */\n\tgetRequestPath() {\n\t\tvar request = this.getRequest();\n\t\tif (request) {\n\t\t\tvar requestPath = request.requestPath;\n\t\t\tvar responseUrl = this.maybeExtractResponseUrlFromRequest(request);\n\t\t\tif (responseUrl) {\n\t\t\t\trequestPath = responseUrl;\n\t\t\t}\n\t\t\tif (UA.isIeOrEdge && this.httpMethod === RequestScreen.GET) {\n\t\t\t\trequestPath = new Uri(requestPath).removeUnique().toString();\n\t\t\t}\n\t\t\treturn utils.getUrlPath(requestPath);\n\t\t}\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets the request object.\n\t * @return {?Object}\n\t */\n\tgetRequest() {\n\t\treturn this.request;\n\t}\n\n\t/**\n\t * Gets the request timeout.\n\t * @return {!number}\n\t */\n\tgetTimeout() {\n\t\treturn this.timeout;\n\t}\n\n\t/**\n\t * Checks if response succeeded. Any status code 2xx or 3xx is considered\n\t * valid.\n\t * @param {number} statusCode\n\t */\n\tisValidResponseStatusCode(statusCode) {\n\t\treturn statusCode >= 200 && statusCode <= 399;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tload(path) {\n\t\tvar cache = this.getCache();\n\t\tif (core.isDefAndNotNull(cache)) {\n\t\t\treturn CancellablePromise.resolve(cache);\n\t\t}\n\n\t\tvar body = null;\n\t\tvar httpMethod = this.httpMethod;\n\n\t\tvar headers = new MultiMap();\n\t\tObject.keys(this.httpHeaders).forEach(header => headers.add(header, this.httpHeaders[header]));\n\n\t\tif (globals.capturedFormElement) {\n\t\t\tbody = new FormData(globals.capturedFormElement);\n\t\t\thttpMethod = RequestScreen.POST;\n\t\t\tif (UA.isIeOrEdge) {\n\t\t\t\theaders.add('If-None-Match', '\"0\"');\n\t\t\t}\n\t\t}\n\n\t\tvar requestPath = this.formatLoadPath(path);\n\t\treturn Ajax\n\t\t\t.request(requestPath, httpMethod, body, headers, null, this.timeout)\n\t\t\t.then(xhr => {\n\t\t\t\tthis.setRequest(xhr);\n\t\t\t\tthis.assertValidResponseStatusCode(xhr.status);\n\t\t\t\tif (httpMethod === RequestScreen.GET && this.isCacheable()) {\n\t\t\t\t\tthis.addCache(xhr.responseText);\n\t\t\t\t}\n\t\t\t\txhr.requestPath = requestPath;\n\t\t\t\treturn xhr.responseText;\n\t\t\t})\n\t\t\t.catch((reason) => {\n\t\t\t\tswitch (reason.message) {\n\t\t\t\t\tcase errors.REQUEST_TIMEOUT:\n\t\t\t\t\t\treason.timeout = true;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase errors.REQUEST_ERROR:\n\t\t\t\t\t\treason.requestError = true;\n\t\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * The following method tries to extract the response url value by checking\n\t * the custom response header 'X-Request-URL' if proper value is not present\n\t * in XMLHttpRequest. The value of responseURL will be the final URL\n\t * obtained after any redirects. Internet Explorer, Edge and Safari <= 7\n\t * does not yet support the feature. For more information see:\n\t * https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseURL\n\t * https://xhr.spec.whatwg.org/#the-responseurl-attribute\n\t * @param {XMLHttpRequest} request\n\t * @return {?string} Response url best match.\n\t */\n\tmaybeExtractResponseUrlFromRequest(request) {\n\t\tvar responseUrl = request.responseURL;\n\t\tif (responseUrl) {\n\t\t\treturn responseUrl;\n\t\t}\n\t\treturn request.getResponseHeader(RequestScreen.X_REQUEST_URL_HEADER);\n\t}\n\n\t/**\n\t * Sets the http headers.\n\t * @param {?Object=} httpHeaders\n\t */\n\tsetHttpHeaders(httpHeaders) {\n\t\tthis.httpHeaders = httpHeaders;\n\t}\n\n\t/**\n\t * Sets the http method.\n\t * @param {!string} httpMethod\n\t */\n\tsetHttpMethod(httpMethod) {\n\t\tthis.httpMethod = httpMethod.toLowerCase();\n\t}\n\n\t/**\n\t * Sets the request object.\n\t * @param {?Object} request\n\t */\n\tsetRequest(request) {\n\t\tthis.request = request;\n\t}\n\n\t/**\n\t * Sets the request timeout in milliseconds.\n\t * @param {!number} timeout\n\t */\n\tsetTimeout(timeout) {\n\t\tthis.timeout = timeout;\n\t}\n\n}\n\n/**\n * Holds value for method get.\n * @type {string}\n * @default 'get'\n * @static\n */\nRequestScreen.GET = 'get';\n\n/**\n * Holds value for method post.\n * @type {string}\n * @default 'post'\n * @static\n */\nRequestScreen.POST = 'post';\n\n/**\n * Fallback http header to retrieve response request url.\n * @type {string}\n * @default 'X-Request-URL'\n * @static\n */\nRequestScreen.X_REQUEST_URL_HEADER = 'X-Request-URL';\n\nexport default RequestScreen;\n","'use strict';\n\nimport { core } from 'metal';\nimport { dom, globalEval, globalEvalStyles } from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\nimport globals from '../globals/globals';\nimport RequestScreen from './RequestScreen';\nimport Surface from '../surface/Surface';\nimport UA from 'metal-useragent';\nimport Uri from 'metal-uri';\nimport utils from '../utils/utils';\n\nclass HtmlScreen extends RequestScreen {\n\n\t/**\n\t * Screen class that perform a request and extracts surface contents from\n\t * the response content.\n\t * @constructor\n\t * @extends {RequestScreen}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the title selector. Relevant to extract the </code>\n\t\t * element from request fragments to use as the screen title.\n\t\t * @type {!string}\n\t\t * @default title\n\t\t * @protected\n\t\t */\n\t\tthis.titleSelector = 'title';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tactivate() {\n\t\tsuper.activate();\n\t\tthis.releaseVirtualDocument();\n\t\tthis.pendingStyles = null;\n\t}\n\n\t/**\n\t * Allocates virtual document for content. After allocated virtual document\n\t * can be accessed by <code>this.virtualDocument</code>.\n\t * @param {!string} htmlString\n\t */\n\tallocateVirtualDocumentForContent(htmlString) {\n\t\tif (!this.virtualDocument) {\n\t\t\tthis.virtualDocument = globals.document.createElement('html');\n\t\t}\n\n\t\tthis.copyNodeAttributesFromContent_(htmlString, this.virtualDocument);\n\n\t\tthis.virtualDocument.innerHTML = htmlString;\n\t}\n\n\t/**\n\t * Customizes logic to append styles into document. Relevant to when\n\t * tracking a style by id make sure to re-positions the new style in the\n\t * same dom order.\n\t * @param {Element} newStyle\n\t */\n\tappendStyleIntoDocument_(newStyle) {\n\t\tvar isTemporaryStyle = dom.match(newStyle, HtmlScreen.selectors.stylesTemporary);\n\t\tif (isTemporaryStyle) {\n\t\t\tthis.pendingStyles.push(newStyle);\n\t\t}\n\t\tif (newStyle.id) {\n\t\t\tvar styleInDoc = globals.document.getElementById(newStyle.id);\n\t\t\tif (styleInDoc) {\n\t\t\t\tstyleInDoc.parentNode.insertBefore(newStyle, styleInDoc.nextSibling);\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\t\tglobals.document.head.appendChild(newStyle);\n\t}\n\n\t/**\n\t * If body is used as surface forces the requested documents to have same id\n\t * of the initial page.\n\t */\n\tassertSameBodyIdInVirtualDocument() {\n\t\tvar bodySurface = this.virtualDocument.querySelector('body');\n\t\tif (!globals.document.body.id) {\n\t\t\tglobals.document.body.id = 'senna_surface_' + core.getUid();\n\t\t}\n\t\tif (bodySurface) {\n\t\t\tbodySurface.id = globals.document.body.id;\n\t\t}\n\t}\n\n\t/**\n\t * Copies attributes from the <html> tag of content to the given node.\n\t */\n\tcopyNodeAttributesFromContent_(content, node) {\n\t\tcontent = content.replace(/[<]\\s*html/ig, '<senna');\n\t\tcontent = content.replace(/\\/html\\s*\\>/ig, '/senna>');\n\t\tnode.innerHTML = content;\n\t\tvar placeholder = node.querySelector('senna');\n\t\tif (placeholder) {\n\t\t\tutils.clearNodeAttributes(node);\n\t\t\tutils.copyNodeAttributes(placeholder, node);\n\t\t}\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tdisposeInternal() {\n\t\tthis.disposePendingStyles();\n\t\tsuper.disposeInternal();\n\t}\n\n\t/**\n\t * Disposes pending styles if screen get disposed prior to its loading.\n\t */\n\tdisposePendingStyles() {\n\t\tif (this.pendingStyles) {\n\t\t\tthis.pendingStyles.forEach((style) => dom.exitDocument(style));\n\t\t}\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tevaluateScripts(surfaces) {\n\t\tvar evaluateTrackedScripts = this.evaluateTrackedResources_(\n\t\t\tglobalEval.runScriptsInElement, HtmlScreen.selectors.scripts,\n\t\t\tHtmlScreen.selectors.scriptsTemporary, HtmlScreen.selectors.scriptsPermanent);\n\n\t\treturn evaluateTrackedScripts.then(() => super.evaluateScripts(surfaces));\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tevaluateStyles(surfaces) {\n\t\tthis.pendingStyles = [];\n\t\tvar evaluateTrackedStyles = this.evaluateTrackedResources_(\n\t\t\tglobalEvalStyles.runStylesInElement, HtmlScreen.selectors.styles,\n\t\t\tHtmlScreen.selectors.stylesTemporary, HtmlScreen.selectors.stylesPermanent,\n\t\t\tthis.appendStyleIntoDocument_.bind(this));\n\n\t\treturn evaluateTrackedStyles.then(() => super.evaluateStyles(surfaces));\n\t}\n\n\t/**\n\t * Evaluates tracked resources inside incoming fragment and remove existing\n\t * temporary resources.\n\t * @param {?function()} appendFn Function to append the node into document.\n\t * @param {!string} selector Selector used to find resources to track.\n\t * @param {!string} selectorTemporary Selector used to find temporary\n\t * resources to track.\n\t * @param {!string} selectorPermanent Selector used to find permanent\n\t * resources to track.\n\t * @param {!function} opt_appendResourceFn Optional function used to\n\t * evaluate fragment containing resources.\n\t * @return {CancellablePromise} Deferred that waits resources evaluation to\n\t * complete.\n\t * @private\n\t */\n\tevaluateTrackedResources_(evaluatorFn, selector, selectorTemporary, selectorPermanent, opt_appendResourceFn) {\n\t\tvar tracked = this.virtualQuerySelectorAll_(selector);\n\t\tvar temporariesInDoc = this.querySelectorAll_(selectorTemporary);\n\t\tvar permanentsInDoc = this.querySelectorAll_(selectorPermanent);\n\n\t\t// Adds permanent resources in document to cache.\n\t\tpermanentsInDoc.forEach((resource) => {\n\t\t\tvar resourceKey = this.getResourceKey_(resource);\n\t\t\tif (resourceKey) {\n\t\t\t\tHtmlScreen.permanentResourcesInDoc[resourceKey] = true;\n\t\t\t}\n\t\t});\n\n\t\tvar frag = dom.buildFragment();\n\t\ttracked.forEach((resource) => {\n\t\t\tvar resourceKey = this.getResourceKey_(resource);\n\t\t\t// Do not load permanent resources if already in document.\n\t\t\tif (!HtmlScreen.permanentResourcesInDoc[resourceKey]) {\n\t\t\t\tfrag.appendChild(resource);\n\t\t\t}\n\t\t\t// If resource has key and is permanent add to cache.\n\t\t\tif (resourceKey && dom.match(resource, selectorPermanent)) {\n\t\t\t\tHtmlScreen.permanentResourcesInDoc[resourceKey] = true;\n\t\t\t}\n\t\t});\n\n\t\treturn new CancellablePromise((resolve) => {\n\t\t\tevaluatorFn(frag, () => {\n\t\t\t\ttemporariesInDoc.forEach((resource) => dom.exitDocument(resource));\n\t\t\t\tresolve();\n\t\t\t}, opt_appendResourceFn);\n\t\t});\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tflip(surfaces) {\n\t\treturn super.flip(surfaces).then(() => {\n\t\t\tutils.clearNodeAttributes(document.documentElement);\n\t\t\tutils.copyNodeAttributes(this.virtualDocument, document.documentElement);\n\t\t});\n\t}\n\n\t/**\n\t * Extracts a key to identify the resource based on its attributes.\n\t * @param {Element} resource\n\t * @return {string} Extracted key based on resource attributes in order of\n\t * preference: id, href, src.\n\t */\n\tgetResourceKey_(resource) {\n\t\treturn resource.id || resource.href || resource.src || '';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetSurfaceContent(surfaceId) {\n\t\tvar surface = this.virtualDocument.querySelector('#' + surfaceId);\n\t\tif (surface) {\n\t\t\tvar defaultChild = surface.querySelector('#' + surfaceId + '-' + Surface.DEFAULT);\n\t\t\tif (defaultChild) {\n\t\t\t\treturn defaultChild.innerHTML;\n\t\t\t}\n\t\t\treturn surface.innerHTML; // If default content not found, use surface content\n\t\t}\n\t}\n\n\t/**\n\t * Gets the title selector.\n\t * @return {!string}\n\t */\n\tgetTitleSelector() {\n\t\treturn this.titleSelector;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tload(path) {\n\t\treturn super.load(path)\n\t\t\t.then(content => {\n\t\t\t\tthis.allocateVirtualDocumentForContent(content);\n\t\t\t\tthis.resolveTitleFromVirtualDocument();\n\t\t\t\tthis.assertSameBodyIdInVirtualDocument();\n\t\t\t\tif (UA.isIe) {\n\t\t\t\t\tthis.makeTemporaryStylesHrefsUnique_();\n\t\t\t\t}\n\t\t\t\treturn content;\n\t\t\t});\n\t}\n\n\t/**\n\t * Queries temporary styles from virtual document, and makes them unique.\n\t * This is necessary for caching and load event firing issues specific to\n\t * IE11. https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7940171/\n\t */\n\tmakeTemporaryStylesHrefsUnique_() {\n\t\tvar temporariesInDoc = this.virtualQuerySelectorAll_(HtmlScreen.selectors.stylesTemporary);\n\t\ttemporariesInDoc.forEach((style) => this.replaceStyleAndMakeUnique_(style));\n\t}\n\n\t/**\n\t * Creates a new element from given, copies attributes, mutates href to be\n\t * unique to prevent caching and more than one load/error event from firing.\n\t */\n\treplaceStyleAndMakeUnique_(style) {\n\t\tif (style.href) {\n\t\t\tvar newStyle = globals.document.createElement(style.tagName);\n\t\t\tstyle.href = new Uri(style.href).makeUnique().toString();\n\t\t\tutils.copyNodeAttributes(style, newStyle);\n\t\t\tstyle.parentNode.replaceChild(newStyle, style);\n\t\t\tstyle.disabled = true;\n\t\t}\n\t}\n\n\t/**\n\t * Queries elements from virtual document and returns an array of elements.\n\t * @param {!string} selector\n\t * @return {array.<Element>}\n\t */\n\tvirtualQuerySelectorAll_(selector) {\n\t\treturn Array.prototype.slice.call(this.virtualDocument.querySelectorAll(selector));\n\t}\n\n\t/**\n\t * Queries elements from document and returns an array of elements.\n\t * @param {!string} selector\n\t * @return {array.<Element>}\n\t */\n\tquerySelectorAll_(selector) {\n\t\treturn Array.prototype.slice.call(globals.document.querySelectorAll(selector));\n\t}\n\n\t/**\n\t * Releases virtual document allocated for content.\n\t */\n\treleaseVirtualDocument() {\n\t\tthis.virtualDocument = null;\n\t}\n\n\t/**\n\t * Resolves title from allocated virtual document.\n\t */\n\tresolveTitleFromVirtualDocument() {\n\t\tvar title = this.virtualDocument.querySelector(this.titleSelector);\n\t\tif (title) {\n\t\t\tthis.setTitle(title.innerHTML.trim());\n\t\t}\n\t}\n\n\t/**\n\t * Sets the title selector.\n\t * @param {!string} titleSelector\n\t */\n\tsetTitleSelector(titleSelector) {\n\t\tthis.titleSelector = titleSelector;\n\t}\n\n}\n\n/**\n * Helper selectors for tracking resources.\n * @type {object}\n * @protected\n * @static\n */\nHtmlScreen.selectors = {\n\tscripts: 'script[data-senna-track]',\n\tscriptsPermanent: 'script[data-senna-track=\"permanent\"]',\n\tscriptsTemporary: 'script[data-senna-track=\"temporary\"]',\n\tstyles: 'style[data-senna-track],link[data-senna-track]',\n\tstylesPermanent: 'style[data-senna-track=\"permanent\"],link[data-senna-track=\"permanent\"]',\n\tstylesTemporary: 'style[data-senna-track=\"temporary\"],link[data-senna-track=\"temporary\"]'\n};\n\n/**\n * Caches permanent resource keys.\n * @type {object}\n * @protected\n * @static\n */\nHtmlScreen.permanentResourcesInDoc = {};\n\nexport default HtmlScreen;\n","'use strict';\n\nimport utils from './utils/utils';\nimport App from './app/App';\nimport HtmlScreen from './screen/HtmlScreen';\nimport RequestScreen from './screen/RequestScreen';\nimport Route from './route/Route';\nimport Screen from './screen/Screen';\n\nexport default App;\nexport { utils, App, HtmlScreen, Route, RequestScreen, Screen };\n","'use strict';\n\nexport default {\n\tbasePath: 'data-senna-base-path',\n\tlinkSelector: 'data-senna-link-selector',\n\tloadingCssClass: 'data-senna-loading-css-class',\n\tsenna: 'data-senna',\n\tdispatch: 'data-senna-dispatch',\n\tsurface: 'data-senna-surface',\n\tupdateScrollPosition: 'data-senna-update-scroll-position'\n};","'use strict';\n\nimport { core, object, Disposable } from 'metal';\nimport dataAttributes from './dataAttributes';\nimport globals from '../globals/globals';\nimport App from './App';\nimport HtmlScreen from '../screen/HtmlScreen';\nimport Route from '../route/Route';\n\nclass AppDataAttributeHandler extends Disposable {\n\n\t/**\n\t * Initilizes App, register surfaces and routes from data attributes.\n\t * @constructor\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the app reference initialized by data attributes.\n\t\t * @type {App}\n\t\t * @default null\n\t\t */\n\t\tthis.app = null;\n\n\t\t/**\n\t\t * Holds the base element to search initialization data attributes. This\n\t\t * element is the container used to enable initialization based on the\n\t\t * presence of `data-senna` attribute.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t */\n\t\tthis.baseElement = null;\n\t}\n\n\t/**\n\t * Inits application based on information scanned from document.\n\t */\n\thandle() {\n\t\tif (!core.isElement(this.baseElement)) {\n\t\t\tthrow new Error('Senna data attribute handler base element ' +\n\t\t\t\t'not set or invalid, try setting a valid element that ' +\n\t\t\t\t'contains a `data-senna` attribute.');\n\t\t}\n\n\t\tif (!this.baseElement.hasAttribute(dataAttributes.senna)) {\n\t\t\tconsole.log('Senna was not initialized from data attributes. ' +\n\t\t\t\t'In order to enable its usage from data attributes try setting ' +\n\t\t\t\t'in the base element, e.g. `<body data-senna>`.');\n\t\t\treturn;\n\t\t}\n\n\t\tif (this.app) {\n\t\t\tthrow new Error('Senna app was already initialized.');\n\t\t}\n\n\t\tconsole.log('Senna initialized from data attribute.');\n\n\t\tthis.app = new App();\n\t\tthis.maybeAddRoutes_();\n\t\tthis.maybeAddSurfaces_();\n\t\tthis.maybeSetBasePath_();\n\t\tthis.maybeSetLinkSelector_();\n\t\tthis.maybeSetLoadingCssClass_();\n\t\tthis.maybeSetUpdateScrollPosition_();\n\t\tthis.maybeDispatch_();\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tif (this.app) {\n\t\t\tthis.app.dispose();\n\t\t}\n\t}\n\n\t/**\n\t * Gets the app reference.\n\t * @return {App}\n\t */\n\tgetApp() {\n\t\treturn this.app;\n\t}\n\n\t/**\n\t * Gets the base element.\n\t * @return {Element} baseElement\n\t */\n\tgetBaseElement() {\n\t\treturn this.baseElement;\n\t}\n\n\t/**\n\t * Maybe adds app routes from link elements that are `senna-route`.\n\t */\n\tmaybeAddRoutes_() {\n\t\tvar routesSelector = 'link[rel=\"senna-route\"]';\n\t\tthis.querySelectorAllAsArray_(routesSelector).forEach((link) => this.maybeParseLinkRoute_(link));\n\t\tif (!this.app.hasRoutes()) {\n\t\t\tthis.app.addRoutes(new Route(/.*/, HtmlScreen));\n\t\t\tconsole.log('Senna can\\'t find route elements, adding default.');\n\t\t}\n\t}\n\n\t/**\n\t * Maybe adds app surfaces by scanning `data-senna-surface` data attribute.\n\t */\n\tmaybeAddSurfaces_() {\n\t\tvar surfacesSelector = '[' + dataAttributes.surface + ']';\n\t\tthis.querySelectorAllAsArray_(surfacesSelector).forEach((surfaceElement) => {\n\t\t\tthis.updateElementIdIfSpecialSurface_(surfaceElement);\n\t\t\tthis.app.addSurfaces(surfaceElement.id);\n\t\t});\n\t}\n\n\t/**\n\t * Dispatches app navigation to the current path when initializes.\n\t */\n\tmaybeDispatch_() {\n\t\tif (this.baseElement.hasAttribute(dataAttributes.dispatch)) {\n\t\t\tthis.app.dispatch();\n\t\t}\n\t}\n\n\t/**\n\t * Adds app route by parsing valid link elements. A valid link element is of\n\t * the kind `rel=\"senna-route\"`.\n\t * @param {Element} link\n\t */\n\tmaybeParseLinkRoute_(link) {\n\t\tvar route = new Route(this.maybeParseLinkRoutePath_(link), this.maybeParseLinkRouteHandler_(link));\n\t\tthis.app.addRoutes(route);\n\t\tconsole.log('Senna scanned route ' + route.getPath());\n\t}\n\n\t/**\n\t * Maybe parse link route handler.\n\t * @param {Element} link\n\t * @return {?string}\n\t */\n\tmaybeParseLinkRouteHandler_(link) {\n\t\tvar handler = link.getAttribute('type');\n\t\tif (core.isDefAndNotNull(handler)) {\n\t\t\thandler = object.getObjectByName(handler);\n\t\t}\n\t\treturn handler;\n\t}\n\n\t/**\n\t * Maybe parse link route path.\n\t * @param {Element} link\n\t * @return {?string}\n\t */\n\tmaybeParseLinkRoutePath_(link) {\n\t\tvar path = link.getAttribute('href');\n\t\tif (core.isDefAndNotNull(path)) {\n\t\t\tif (path.indexOf('regex:') === 0) {\n\t\t\t\tpath = new RegExp(path.substring(6));\n\t\t\t}\n\t\t}\n\t\treturn path;\n\t}\n\n\t/**\n\t * Maybe sets app base path from `data-senna-base-path` data attribute.\n\t */\n\tmaybeSetBasePath_() {\n\t\tvar basePath = this.baseElement.getAttribute(dataAttributes.basePath);\n\t\tif (core.isDefAndNotNull(basePath)) {\n\t\t\tthis.app.setBasePath(basePath);\n\t\t\tconsole.log('Senna scanned base path ' + basePath);\n\t\t}\n\t}\n\n\t/**\n\t * Maybe sets app link selector from `data-senna-link-selector` data\n\t * attribute.\n\t */\n\tmaybeSetLinkSelector_() {\n\t\tvar linkSelector = this.baseElement.getAttribute(dataAttributes.linkSelector);\n\t\tif (core.isDefAndNotNull(linkSelector)) {\n\t\t\tthis.app.setLinkSelector(linkSelector);\n\t\t\tconsole.log('Senna scanned link selector ' + linkSelector);\n\t\t}\n\t}\n\n\t/**\n\t * Maybe sets app link loading css class from `data-senna-loading-css-class`\n\t * data attribute.\n\t */\n\tmaybeSetLoadingCssClass_() {\n\t\tvar loadingCssClass = this.baseElement.getAttribute(dataAttributes.loadingCssClass);\n\t\tif (core.isDefAndNotNull(loadingCssClass)) {\n\t\t\tthis.app.setLoadingCssClass(loadingCssClass);\n\t\t\tconsole.log('Senna scanned loading css class ' + loadingCssClass);\n\t\t}\n\t}\n\n\t/**\n\t * Maybe sets app update scroll position from\n\t * `data-senna-update-scroll-position` data attribute.\n\t */\n\tmaybeSetUpdateScrollPosition_() {\n\t\tvar updateScrollPosition = this.baseElement.getAttribute(dataAttributes.updateScrollPosition);\n\t\tif (core.isDefAndNotNull(updateScrollPosition)) {\n\t\t\tif (updateScrollPosition === 'false') {\n\t\t\t\tthis.app.setUpdateScrollPosition(false);\n\t\t\t} else {\n\t\t\t\tthis.app.setUpdateScrollPosition(true);\n\t\t\t}\n\t\t\tconsole.log('Senna scanned update scroll position ' + updateScrollPosition);\n\t\t}\n\t}\n\n\t/**\n\t * Queries elements from document and returns an array of elements.\n\t * @param {!string} selector\n\t * @return {array.<Element>}\n\t */\n\tquerySelectorAllAsArray_(selector) {\n\t\treturn Array.prototype.slice.call(globals.document.querySelectorAll(selector));\n\t}\n\n\t/**\n\t * Updates element id if handled as special surface element. Some surfaces\n\t * are slightly different from others, like when threating <code>body</code>\n\t * as surface.\n\t * @param {Element} element\n\t */\n\tupdateElementIdIfSpecialSurface_(element) {\n\t\tif (!element.id && element === globals.document.body) {\n\t\t\telement.id = 'senna_surface_' + core.getUid();\n\t\t}\n\t}\n\n\t/**\n\t * Sets the base element.\n\t * @param {Element} baseElement\n\t */\n\tsetBaseElement(baseElement) {\n\t\tthis.baseElement = baseElement;\n\t}\n\n}\n\nexport default AppDataAttributeHandler;\n","'use strict';\n\nimport globals from '../globals/globals';\nimport AppDataAttributeHandler from './AppDataAttributeHandler';\n\n/**\n * Data attribute handler.\n * @type {AppDataAttributeHandler}\n */\nvar dataAttributeHandler = new AppDataAttributeHandler();\n\nglobals.document.addEventListener('DOMContentLoaded', function() {\n\tdataAttributeHandler.setBaseElement(globals.document.body);\n\tdataAttributeHandler.handle();\n});\n\nexport default dataAttributeHandler;"],"sourceRoot":"/source/"} \ No newline at end of file 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globals = {\n\tdocument: document,\n\twindow: window\n};\n\nexport default globals;","'use strict';\n\n/**\n * A collection of core utility functions.\n * @const\n */\n\nlet compatibilityModeData_;\n\n/**\n * Counter for unique id.\n * @type {Number}\n * @private\n */\nlet uniqueIdCounter_ = 1;\n\n/**\n * Unique id property prefix.\n * @type {String}\n * @protected\n */\nexport const UID_PROPERTY = 'core_' + ((Math.random() * 1e9) >>> 0);\n\n/**\n * When defining a class Foo with an abstract method bar(), you can do:\n * Foo.prototype.bar = abstractMethod\n *\n * Now if a subclass of Foo fails to override bar(), an error will be thrown\n * when bar() is invoked.\n *\n * @type {!Function}\n * @throws {Error} when invoked to indicate the method should be overridden.\n */\nexport function abstractMethod() {\n\tthrow Error('Unimplemented abstract method');\n}\n\n/**\n * Loops constructor super classes collecting its properties values. If\n * property is not available on the super class `undefined` will be\n * collected as value for the class hierarchy position.\n * @param {!function()} constructor Class constructor.\n * @param {string} propertyName Property name to be collected.\n * @return {Array.<*>} Array of collected values.\n * TODO(*): Rethink superclass loop.\n */\nexport function collectSuperClassesProperty(constructor, propertyName) {\n\tvar propertyValues = [constructor[propertyName]];\n\twhile (constructor.__proto__ && !constructor.__proto__.isPrototypeOf(Function)) {\n\t\tconstructor = constructor.__proto__;\n\t\tpropertyValues.push(constructor[propertyName]);\n\t}\n\treturn propertyValues;\n}\n\n/**\n * Disables Metal.js's compatibility mode.\n */\nexport function disableCompatibilityMode() {\n\tcompatibilityModeData_ = null;\n}\n\n/**\n * Enables Metal.js's compatibility mode with the following features from rc\n * and 1.x versions:\n * - Using \"key\" to reference component instances. In the current version\n * this should be done via \"ref\" instead. This allows old code still\n * using \"key\" to keep working like before. NOTE: this may cause\n * problems, since \"key\" is meant to be used differently. Only use this\n * if it's not possible to upgrade the code to use \"ref\" instead.\n * @param {Object=} opt_data Optional object with data to specify more\n * details, such as:\n * - renderers {Array} the template renderers that should be in\n * compatibility mode, either their constructors or strings\n * representing them (e.g. 'soy' or 'jsx'). 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If the current browser doesn't\n * support the `name` property, this will calculate it from the function's\n * content string.\n * @param {!function()} fn\n * @return {string}\n */\nexport function getFunctionName(fn) {\n\tif (!fn.name) {\n\t\tvar str = fn.toString();\n\t\tfn.name = str.substring(9, str.indexOf('('));\n\t}\n\treturn fn.name;\n}\n\n/**\n * Gets an unique id. If `opt_object` argument is passed, the object is\n * mutated with an unique id. Consecutive calls with the same object\n * reference won't mutate the object again, instead the current object uid\n * returns. See {@link UID_PROPERTY}.\n * @param {Object=} opt_object Optional object to be mutated with the uid. If\n * not specified this method only returns the uid.\n * @param {boolean=} opt_noInheritance Optional flag indicating if this\n * object's uid property can be inherited from parents or not.\n * @throws {Error} when invoked to indicate the method should be overridden.\n */\nexport function getUid(opt_object, opt_noInheritance) {\n\tif (opt_object) {\n\t\tvar id = opt_object[UID_PROPERTY];\n\t\tif (opt_noInheritance && !opt_object.hasOwnProperty(UID_PROPERTY)) {\n\t\t\tid = null;\n\t\t}\n\t\treturn id || (opt_object[UID_PROPERTY] = uniqueIdCounter_++);\n\t}\n\treturn uniqueIdCounter_++;\n}\n\n/**\n * The identity function. Returns its first argument.\n * @param {*=} opt_returnValue The single value that will be returned.\n * @return {?} The first argument.\n */\nexport function identityFunction(opt_returnValue) {\n\treturn opt_returnValue;\n}\n\n/**\n * Returns true if the specified value is a boolean.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is boolean.\n */\nexport function isBoolean(val) {\n\treturn typeof val === 'boolean';\n}\n\n/**\n * Returns true if the specified value is not undefined.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is defined.\n */\nexport function isDef(val) {\n\treturn val !== undefined;\n}\n\n/**\n * Returns true if value is not undefined or null.\n * @param {*} val\n * @return {boolean}\n */\nexport function isDefAndNotNull(val) {\n\treturn isDef(val) && !isNull(val);\n}\n\n/**\n * Returns true if value is a document.\n * @param {*} val\n * @return {boolean}\n */\nexport function isDocument(val) {\n\treturn val && typeof val === 'object' && val.nodeType === 9;\n}\n\n/**\n * Returns true if value is a dom element.\n * @param {*} val\n * @return {boolean}\n */\nexport function isElement(val) {\n\treturn val && typeof val === 'object' && val.nodeType === 1;\n}\n\n/**\n * Returns true if the specified value is a function.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is a function.\n */\nexport function isFunction(val) {\n\treturn typeof val === 'function';\n}\n\n/**\n * Returns true if value is null.\n * @param {*} val\n * @return {boolean}\n */\nexport function isNull(val) {\n\treturn val === null;\n}\n\n/**\n * Returns true if the specified value is a number.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is a number.\n */\nexport function isNumber(val) {\n\treturn typeof val === 'number';\n}\n\n/**\n * Returns true if value is a window.\n * @param {*} val\n * @return {boolean}\n */\nexport function isWindow(val) {\n\treturn val !== null && val === val.window;\n}\n\n/**\n * Returns true if the specified value is an object. This includes arrays\n * and functions.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is an object.\n */\nexport function isObject(val) {\n\tvar type = typeof val;\n\treturn type === 'object' && val !== null || type === 'function';\n}\n\n/**\n * Returns true if value is a Promise.\n * @param {*} val\n * @return {boolean}\n */\nexport function isPromise(val) {\n\treturn val && typeof val === 'object' && typeof val.then === 'function';\n}\n\n/**\n * Returns true if value is a string.\n * @param {*} val\n * @return {boolean}\n */\nexport function isString(val) {\n\treturn typeof val === 'string' || val instanceof String;\n}\n\n/**\n * Merges the values of a export function property a class with the values of that\n * property for all its super classes, and stores it as a new static\n * property of that class. If the export function property already existed, it won't\n * be recalculated.\n * @param {!function()} constructor Class constructor.\n * @param {string} propertyName Property name to be collected.\n * @param {function(*, *):*=} opt_mergeFn Function that receives an array filled\n * with the values of the property for the current class and all its super classes.\n * Should return the merged value to be stored on the current class.\n * @return {boolean} Returns true if merge happens, false otherwise.\n */\nexport function mergeSuperClassesProperty(constructor, propertyName, opt_mergeFn) {\n\tvar mergedName = propertyName + '_MERGED';\n\tif (constructor.hasOwnProperty(mergedName)) {\n\t\treturn false;\n\t}\n\n\tvar merged = collectSuperClassesProperty(constructor, propertyName);\n\tif (opt_mergeFn) {\n\t\tmerged = opt_mergeFn(merged);\n\t}\n\tconstructor[mergedName] = merged;\n\treturn true;\n}\n\n/**\n * Null function used for default values of callbacks, etc.\n * @return {void} Nothing.\n */\nexport function nullFunction() {}\n","'use strict';\n\n// This file exists just for backwards compatibility, making sure that old\n// default imports for this file still work. It's best to use the named exports\n// for each function instead though, since that allows bundlers like Rollup to\n// reduce the bundle size by removing unused code.\nimport * as core from './coreNamed';\n\nexport default core;\nexport { core };\nexport * from './coreNamed';\n","'use strict';\n\nimport { isDef } from '../core';\n\nclass array {\n\t/**\n\t * Checks if the given arrays have the same content.\n\t * @param {!Array<*>} arr1\n\t * @param {!Array<*>} arr2\n\t * @return {boolean}\n\t */\n\tstatic equal(arr1, arr2) {\n\t\tif (arr1.length !== arr2.length) {\n\t\t\treturn false;\n\t\t}\n\t\tfor (var i = 0; i < arr1.length; i++) {\n\t\t\tif (arr1[i] !== arr2[i]) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\t\treturn true;\n\t}\n\n\t/**\n\t * Returns the first value in the given array that isn't undefined.\n\t * @param {!Array} arr\n\t * @return {*}\n\t */\n\tstatic firstDefinedValue(arr) {\n\t\tfor (var i = 0; i < arr.length; i++) {\n\t\t\tif (arr[i] !== undefined) {\n\t\t\t\treturn arr[i];\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Transforms the input nested array to become flat.\n\t * @param {Array.<*|Array.<*>>} arr Nested array to flatten.\n\t * @param {Array.<*>} opt_output Optional output array.\n\t * @return {Array.<*>} Flat array.\n\t */\n\tstatic flatten(arr, opt_output) {\n\t\tvar output = opt_output || [];\n\t\tfor (var i = 0; i < arr.length; i++) {\n\t\t\tif (Array.isArray(arr[i])) {\n\t\t\t\tarray.flatten(arr[i], output);\n\t\t\t} else {\n\t\t\t\toutput.push(arr[i]);\n\t\t\t}\n\t\t}\n\t\treturn output;\n\t}\n\n\t/**\n\t * Removes the first occurrence of a particular value from an array.\n\t * @param {Array.<T>} arr Array from which to remove value.\n\t * @param {T} obj Object to remove.\n\t * @return {boolean} True if an element was removed.\n\t * @template T\n\t */\n\tstatic remove(arr, obj) {\n\t\tvar i = arr.indexOf(obj);\n\t\tvar rv;\n\t\tif ( (rv = i >= 0) ) {\n\t\t\tarray.removeAt(arr, i);\n\t\t}\n\t\treturn rv;\n\t}\n\n\t/**\n\t * Removes from an array the element at index i\n\t * @param {Array} arr Array or array like object from which to remove value.\n\t * @param {number} i The index to remove.\n\t * @return {boolean} True if an element was removed.\n\t */\n\tstatic removeAt(arr, i) {\n\t\treturn Array.prototype.splice.call(arr, i, 1).length === 1;\n\t}\n\n\t/**\n\t * Slices the given array, just like Array.prototype.slice, but this\n\t * is faster and working on all array-like objects (like arguments).\n\t * @param {!Object} arr Array-like object to slice.\n\t * @param {number} start The index that should start the slice.\n\t * @param {number=} opt_end The index where the slice should end, not\n\t * included in the final array. If not given, all elements after the\n\t * start index will be included.\n\t * @return {!Array}\n\t */\n\tstatic slice(arr, start, opt_end) {\n\t\tvar sliced = [];\n\t\tvar end = isDef(opt_end) ? opt_end : arr.length;\n\t\tfor (var i = start; i < end; i++) {\n\t\t\tsliced.push(arr[i]);\n\t\t}\n\t\treturn sliced;\n\t}\n}\n\nexport default array;\n","/*!\n * Polyfill from Google's Closure Library.\n * Copyright 2013 The Closure Library Authors. All Rights Reserved.\n */\n\n'use strict';\n\nvar async = {};\n\n\n/**\n * Throw an item without interrupting the current execution context. For\n * example, if processing a group of items in a loop, sometimes it is useful\n * to report an error while still allowing the rest of the batch to be\n * processed.\n * @param {*} exception\n */\nasync.throwException = function(exception) {\n\t// Each throw needs to be in its own context.\n\tasync.nextTick(function() {\n\t\tthrow exception;\n\t});\n};\n\n\n/**\n * Fires the provided callback just before the current callstack unwinds, or as\n * soon as possible after the current JS execution context.\n * @param {function(this:THIS)} callback\n * @param {THIS=} opt_context Object to use as the \"this value\" when calling\n * the provided function.\n * @template THIS\n */\nasync.run = function(callback, opt_context) {\n\tif (!async.run.workQueueScheduled_) {\n\t\t// Nothing is currently scheduled, schedule it now.\n\t\tasync.nextTick(async.run.processWorkQueue);\n\t\tasync.run.workQueueScheduled_ = true;\n\t}\n\n\tasync.run.workQueue_.push(\n\t\tnew async.run.WorkItem_(callback, opt_context));\n};\n\n\n/** @private {boolean} */\nasync.run.workQueueScheduled_ = false;\n\n\n/** @private {!Array.<!async.run.WorkItem_>} */\nasync.run.workQueue_ = [];\n\n/**\n * Run any pending async.run work items. This function is not intended\n * for general use, but for use by entry point handlers to run items ahead of\n * async.nextTick.\n */\nasync.run.processWorkQueue = function() {\n\t// NOTE: additional work queue items may be pushed while processing.\n\twhile (async.run.workQueue_.length) {\n\t\t// Don't let the work queue grow indefinitely.\n\t\tvar workItems = async.run.workQueue_;\n\t\tasync.run.workQueue_ = [];\n\t\tfor (var i = 0; i < workItems.length; i++) {\n\t\t\tvar workItem = workItems[i];\n\t\t\ttry {\n\t\t\t\tworkItem.fn.call(workItem.scope);\n\t\t\t} catch (e) {\n\t\t\t\tasync.throwException(e);\n\t\t\t}\n\t\t}\n\t}\n\n\t// There are no more work items, reset the work queue.\n\tasync.run.workQueueScheduled_ = false;\n};\n\n\n/**\n * @constructor\n * @final\n * @struct\n * @private\n *\n * @param {function()} fn\n * @param {Object|null|undefined} scope\n */\nasync.run.WorkItem_ = function(fn, scope) {\n\t/** @const */\n\tthis.fn = fn;\n\t/** @const */\n\tthis.scope = scope;\n};\n\n\n/**\n * Fires the provided callbacks as soon as possible after the current JS\n * execution context. setTimeout(…, 0) always takes at least 5ms for legacy\n * reasons.\n * @param {function(this:SCOPE)} callback Callback function to fire as soon as\n * possible.\n * @param {SCOPE=} opt_context Object in whose scope to call the listener.\n * @template SCOPE\n */\nasync.nextTick = function(callback, opt_context) {\n\tvar cb = callback;\n\tif (opt_context) {\n\t\tcb = callback.bind(opt_context);\n\t}\n\tcb = async.nextTick.wrapCallback_(cb);\n\t// Introduced and currently only supported by IE10.\n\t// Verify if variable is defined on the current runtime (i.e., node, browser).\n\t// Can't use typeof enclosed in a function (such as core.isFunction) or an\n\t// exception will be thrown when the function is called on an environment\n\t// where the variable is undefined.\n\tif (typeof setImmediate === 'function') {\n\t\tsetImmediate(cb);\n\t\treturn;\n\t}\n\t// Look for and cache the custom fallback version of setImmediate.\n\tif (!async.nextTick.setImmediate_) {\n\t\tasync.nextTick.setImmediate_ = async.nextTick.getSetImmediateEmulator_();\n\t}\n\tasync.nextTick.setImmediate_(cb);\n};\n\n\n/**\n * Cache for the setImmediate implementation.\n * @type {function(function())}\n * @private\n */\nasync.nextTick.setImmediate_ = null;\n\n\n/**\n * Determines the best possible implementation to run a function as soon as\n * the JS event loop is idle.\n * @return {function(function())} The \"setImmediate\" implementation.\n * @private\n */\nasync.nextTick.getSetImmediateEmulator_ = function() {\n\t// Create a private message channel and use it to postMessage empty messages\n\t// to ourselves.\n\tvar Channel;\n\n\t// Verify if variable is defined on the current runtime (i.e., node, browser).\n\t// Can't use typeof enclosed in a function (such as core.isFunction) or an\n\t// exception will be thrown when the function is called on an environment\n\t// where the variable is undefined.\n\tif (typeof MessageChannel === 'function') {\n\t\tChannel = MessageChannel;\n\t}\n\n\t// If MessageChannel is not available and we are in a browser, implement\n\t// an iframe based polyfill in browsers that have postMessage and\n\t// document.addEventListener. The latter excludes IE8 because it has a\n\t// synchronous postMessage implementation.\n\tif (typeof Channel === 'undefined' && typeof window !== 'undefined' &&\n\t\twindow.postMessage && window.addEventListener) {\n\t\t/** @constructor */\n\t\tChannel = function() {\n\t\t\t// Make an empty, invisible iframe.\n\t\t\tvar iframe = document.createElement('iframe');\n\t\t\tiframe.style.display = 'none';\n\t\t\tiframe.src = '';\n\t\t\tdocument.documentElement.appendChild(iframe);\n\t\t\tvar win = iframe.contentWindow;\n\t\t\tvar doc = win.document;\n\t\t\tdoc.open();\n\t\t\tdoc.write('');\n\t\t\tdoc.close();\n\t\t\tvar message = 'callImmediate' + Math.random();\n\t\t\tvar origin = win.location.protocol + '//' + win.location.host;\n\t\t\tvar onmessage = function(e) {\n\t\t\t\t// Validate origin and message to make sure that this message was\n\t\t\t\t// intended for us.\n\t\t\t\tif (e.origin !== origin && e.data !== message) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t\tthis.port1.onmessage();\n\t\t\t}.bind(this);\n\t\t\twin.addEventListener('message', onmessage, false);\n\t\t\tthis.port1 = {};\n\t\t\tthis.port2 = {\n\t\t\t\tpostMessage: function() {\n\t\t\t\t\twin.postMessage(message, origin);\n\t\t\t\t}\n\t\t\t};\n\t\t};\n\t}\n\tif (typeof Channel !== 'undefined') {\n\t\tvar channel = new Channel();\n\t\t// Use a fifo linked list to call callbacks in the right order.\n\t\tvar head = {};\n\t\tvar tail = head;\n\t\tchannel.port1.onmessage = function() {\n\t\t\thead = head.next;\n\t\t\tvar cb = head.cb;\n\t\t\thead.cb = null;\n\t\t\tcb();\n\t\t};\n\t\treturn function(cb) {\n\t\t\ttail.next = {\n\t\t\t\tcb: cb\n\t\t\t};\n\t\t\ttail = tail.next;\n\t\t\tchannel.port2.postMessage(0);\n\t\t};\n\t}\n\t// Implementation for IE6-8: Script elements fire an asynchronous\n\t// onreadystatechange event when inserted into the DOM.\n\tif (typeof document !== 'undefined' && 'onreadystatechange' in\n\t\tdocument.createElement('script')) {\n\t\treturn function(cb) {\n\t\t\tvar script = document.createElement('script');\n\t\t\tscript.onreadystatechange = function() {\n\t\t\t\t// Clean up and call the callback.\n\t\t\t\tscript.onreadystatechange = null;\n\t\t\t\tscript.parentNode.removeChild(script);\n\t\t\t\tscript = null;\n\t\t\t\tcb();\n\t\t\t\tcb = null;\n\t\t\t};\n\t\t\tdocument.documentElement.appendChild(script);\n\t\t};\n\t}\n\t// Fall back to setTimeout with 0. In browsers this creates a delay of 5ms\n\t// or more.\n\treturn function(cb) {\n\t\tsetTimeout(cb, 0);\n\t};\n};\n\n\n/**\n * Helper function that is overrided to protect callbacks with entry point\n * monitor if the application monitors entry points.\n * @param {function()} callback Callback function to fire as soon as possible.\n * @return {function()} The wrapped callback.\n * @private\n */\nasync.nextTick.wrapCallback_ = function(opt_returnValue) {\n\treturn opt_returnValue;\n};\n\nexport default async;\n","'use strict';\n\n/**\n * Disposable utility. When inherited provides the `dispose` function to its\n * subclass, which is responsible for disposing of any object references\n * when an instance won't be used anymore. Subclasses should override\n * `disposeInternal` to implement any specific disposing logic.\n * @constructor\n */\nclass Disposable {\n\tconstructor() {\n\t\t/**\n\t\t * Flag indicating if this instance has already been disposed.\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.disposed_ = false;\n\t}\n\n\t/**\n\t * Disposes of this instance's object references. Calls `disposeInternal`.\n\t */\n\tdispose() {\n\t\tif (!this.disposed_) {\n\t\t\tthis.disposeInternal();\n\t\t\tthis.disposed_ = true;\n\t\t}\n\t}\n\n\t/**\n\t * Subclasses should override this method to implement any specific\n\t * disposing logic (like clearing references and calling `dispose` on other\n\t * disposables).\n\t */\n\tdisposeInternal() {}\n\n\t/**\n\t * Checks if this instance has already been disposed.\n\t * @return {boolean}\n\t */\n\tisDisposed() {\n\t\treturn this.disposed_;\n\t}\n}\n\nexport default Disposable;\n","'use strict';\n\nclass object {\n\t/**\n\t * Copies all the members of a source object to a target object.\n\t * @param {Object} target Target object.\n\t * @param {...Object} var_args The objects from which values will be copied.\n\t * @return {Object} Returns the target object reference.\n\t */\n\tstatic mixin(target) {\n\t\tvar key, source;\n\t\tfor (var i = 1; i < arguments.length; i++) {\n\t\t\tsource = arguments[i];\n\t\t\tfor (key in source) {\n\t\t\t\ttarget[key] = source[key];\n\t\t\t}\n\t\t}\n\t\treturn target;\n\t}\n\n\t/**\n\t * Returns an object based on its fully qualified external name.\n\t * @param {string} name The fully qualified name.\n\t * @param {object=} opt_obj The object within which to look; default is\n\t * <code>window</code>.\n\t * @return {?} The value (object or primitive) or, if not found, undefined.\n\t */\n\tstatic getObjectByName(name, opt_obj) {\n\t\tvar scope = opt_obj || window;\n\t\tvar parts = name.split('.');\n\t\treturn parts.reduce((part, key) => part[key], scope);\n\t}\n\n\t/**\n\t * Returns a new object with the same keys as the given one, but with\n\t * their values set to the return values of the specified function.\n\t * @param {!Object} obj\n\t * @param {!function(string, *)} fn\n\t * @return {!Object}\n\t */\n\tstatic map(obj, fn) {\n\t\tvar mappedObj = {};\n\t\tvar keys = Object.keys(obj);\n\t\tfor (var i = 0; i < keys.length; i++) {\n\t\t\tmappedObj[keys[i]] = fn(keys[i], obj[keys[i]]);\n\t\t}\n\t\treturn mappedObj;\n\t}\n\n\t/**\n\t * Checks if the two given objects are equal. This is done via a shallow\n\t * check, including only the keys directly contained by the 2 objects.\n\t * @return {boolean}\n\t */\n\tstatic shallowEqual(obj1, obj2) {\n\t\tif (obj1 === obj2) {\n\t\t\treturn true;\n\t\t}\n\n\t\tvar keys1 = Object.keys(obj1);\n\t\tvar keys2 = Object.keys(obj2);\n\t\tif (keys1.length !== keys2.length) {\n\t\t\treturn false;\n\t\t}\n\n\t\tfor (var i = 0; i < keys1.length; i++) {\n\t\t\tif (obj1[keys1[i]] !== obj2[keys1[i]]) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\t\treturn true;\n\t}\n}\n\nexport default object;\n","'use strict';\n\nclass string {\n\t/**\n\t * Removes the breaking spaces from the left and right of the string and\n\t * collapses the sequences of breaking spaces in the middle into single spaces.\n\t * The original and the result strings render the same way in HTML.\n\t * @param {string} str A string in which to collapse spaces.\n\t * @return {string} Copy of the string with normalized breaking spaces.\n\t */\n\tstatic collapseBreakingSpaces(str) {\n\t\treturn str.replace(/[\\t\\r\\n ]+/g, ' ').replace(/^[\\t\\r\\n ]+|[\\t\\r\\n ]+$/g, '');\n\t}\n\n\t/**\n\t* Escapes characters in the string that are not safe to use in a RegExp.\n\t* @param {*} str The string to escape. If not a string, it will be casted\n\t* to one.\n\t* @return {string} A RegExp safe, escaped copy of {@code s}.\n\t*/\n\tstatic escapeRegex(str) {\n\t\treturn String(str)\n\t\t\t.replace(/([-()\\[\\]{}+?*.$\\^|,:#<!\\\\])/g, '\\\\$1')\n\t\t\t.replace(/\\x08/g, '\\\\x08');\n\t}\n\n\t/**\n\t* Returns a string with at least 64-bits of randomness.\n\t* @return {string} A random string, e.g. sn1s7vb4gcic.\n\t*/\n\tstatic getRandomString() {\n\t\tvar x = 2147483648;\n\t\treturn Math.floor(Math.random() * x).toString(36) +\n\t\t\tMath.abs(Math.floor(Math.random() * x) ^ Date.now()).toString(36);\n\t}\n\n\t/**\n\t * Calculates the hashcode for a string. The hashcode value is computed by\n\t * the sum algorithm: s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]. A nice\n\t * property of using 31 prime is that the multiplication can be replaced by\n\t * a shift and a subtraction for better performance: 31*i == (i<<5)-i.\n\t * Modern VMs do this sort of optimization automatically.\n\t * @param {String} val Target string.\n\t * @return {Number} Returns the string hashcode.\n\t */\n\tstatic hashCode(val) {\n\t\tvar hash = 0;\n\t\tfor (var i = 0, len = val.length; i < len; i++) {\n\t\t\thash = 31 * hash + val.charCodeAt(i);\n\t\t\thash %= 0x100000000;\n\t\t}\n\t\treturn hash;\n\t}\n\n\t/**\n\t * Replaces interval into the string with specified value, e.g.\n\t * `replaceInterval(\"abcde\", 1, 4, \"\")` returns \"ae\".\n\t * @param {string} str The input string.\n\t * @param {Number} start Start interval position to be replaced.\n\t * @param {Number} end End interval position to be replaced.\n\t * @param {string} value The value that replaces the specified interval.\n\t * @return {string}\n\t */\n\tstatic replaceInterval(str, start, end, value) {\n\t\treturn str.substring(0, start) + value + str.substring(end);\n\t}\n}\n\nexport default string;\n","'use strict';\n\nimport core from './core';\nimport array from './array/array';\nimport async from './async/async';\nimport Disposable from './disposable/Disposable';\nimport object from './object/object';\nimport string from './string/string';\n\nexport * from './core';\nexport { array, async, Disposable, object, string };\nexport default core;\n","'use strict';\n\n/**\n * Parses the given uri string into an object.\n * @param {*=} opt_uri Optional string URI to parse\n */\nfunction parseFromAnchor(opt_uri) {\n\tvar link = document.createElement('a');\n\tlink.href = opt_uri;\n\treturn {\n\t\thash: link.hash,\n\t\thostname: link.hostname,\n\t\tpassword: link.password,\n\t\tpathname: link.pathname[0] === '/' ? link.pathname : '/' + link.pathname,\n\t\tport: link.port,\n\t\tprotocol: link.protocol,\n\t\tsearch: link.search,\n\t\tusername: link.username\n\t};\n}\n\nexport default parseFromAnchor;\n","'use strict';\n\nimport { isFunction } from 'metal';\nimport parseFromAnchor from './parseFromAnchor';\n\n/**\n * Parses the given uri string into an object. The URL function will be used\n * when present, otherwise we'll fall back to the anchor node element.\n * @param {*=} opt_uri Optional string URI to parse\n */\nfunction parse(opt_uri) {\n\tif (isFunction(URL) && URL.length) {\n\t\treturn new URL(opt_uri);\n\t} else {\n\t\treturn parseFromAnchor(opt_uri);\n\t}\n}\n\nexport default parse;\n","'use strict';\n\nimport { Disposable } from 'metal';\n\n/**\n * A cached reference to the create function.\n */\nvar create = Object.create;\n\n/**\n * Case insensitive string Multimap implementation. Allows multiple values for\n * the same key name.\n * @extends {Disposable}\n */\nclass MultiMap extends Disposable {\n\tconstructor() {\n\t\tsuper();\n\t\tthis.keys = create(null);\n\t\tthis.values = create(null);\n\t}\n\n\t/**\n\t * Adds value to a key name.\n\t * @param {string} name\n\t * @param {*} value\n\t * @chainable\n\t */\n\tadd(name, value) {\n\t\tthis.keys[name.toLowerCase()] = name;\n\t\tthis.values[name.toLowerCase()] = this.values[name.toLowerCase()] || [];\n\t\tthis.values[name.toLowerCase()].push(value);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Clears map names and values.\n\t * @chainable\n\t */\n\tclear() {\n\t\tthis.keys = create(null);\n\t\tthis.values = create(null);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Checks if map contains a value to the key name.\n\t * @param {string} name\n\t * @return {boolean}\n\t * @chainable\n\t */\n\tcontains(name) {\n\t\treturn name.toLowerCase() in this.values;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisposeInternal() {\n\t\tthis.values = null;\n\t}\n\n\t/**\n\t * Creates a `MultiMap` instance from the given object.\n\t * @param {!Object} obj\n\t * @return {!MultiMap}\n\t */\n\tstatic fromObject(obj) {\n\t\tvar map = new MultiMap();\n\t\tvar keys = Object.keys(obj);\n\t\tfor (var i = 0; i < keys.length; i++) {\n\t\t\tmap.set(keys[i], obj[keys[i]]);\n\t\t}\n\t\treturn map;\n\t}\n\n\t/**\n\t * Gets the first added value from a key name.\n\t * @param {string} name\n\t * @return {*}\n\t * @chainable\n\t */\n\tget(name) {\n\t\tvar values = this.values[name.toLowerCase()];\n\t\tif (values) {\n\t\t\treturn values[0];\n\t\t}\n\t}\n\n\t/**\n\t * Gets all values from a key name.\n\t * @param {string} name\n\t * @return {Array.<*>}\n\t */\n\tgetAll(name) {\n\t\treturn this.values[name.toLowerCase()];\n\t}\n\n\t/**\n\t * Returns true if the map is empty, false otherwise.\n\t * @return {boolean}\n\t */\n\tisEmpty() {\n\t\treturn this.size() === 0;\n\t}\n\n\t/**\n\t * Gets array of key names.\n\t * @return {Array.<string>}\n\t */\n\tnames() {\n\t\treturn Object.keys(this.values).map((key) => this.keys[key]);\n\t}\n\n\t/**\n\t * Removes all values from a key name.\n\t * @param {string} name\n\t * @chainable\n\t */\n\tremove(name) {\n\t\tdelete this.keys[name.toLowerCase()];\n\t\tdelete this.values[name.toLowerCase()];\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the value of a key name. Relevant to replace the current values with\n\t * a new one.\n\t * @param {string} name\n\t * @param {*} value\n\t * @chainable\n\t */\n\tset(name, value) {\n\t\tthis.keys[name.toLowerCase()] = name;\n\t\tthis.values[name.toLowerCase()] = [value];\n\t\treturn this;\n\t}\n\n\t/**\n\t * Gets the size of the map key names.\n\t * @return {number}\n\t */\n\tsize() {\n\t\treturn this.names().length;\n\t}\n\n\t/**\n\t * Returns the parsed values as a string.\n\t * @return {string}\n\t */\n\ttoString() {\n\t\treturn JSON.stringify(this.values);\n\t}\n}\n\nexport default MultiMap;\n","'use strict';\n\nimport { array } from 'metal';\n\n/**\n * Generic tree node data structure with arbitrary number of child nodes.\n * @param {V} value Value.\n * @constructor\n */\nclass TreeNode {\n\n\tconstructor(value) {\n\t\t/**\n\t\t * The value.\n\t\t * @private {V}\n\t\t */\n\t\tthis.value_ = value;\n\n\t\t/**\n\t\t * Reference to the parent node or null if it has no parent.\n\t\t * @private {TreeNode}\n\t\t */\n\t\tthis.parent_ = null;\n\n\t\t/**\n\t\t * Child nodes or null in case of leaf node.\n\t\t * @private {Array<!TreeNode>}\n\t\t */\n\t\tthis.children_ = null;\n\t}\n\n\t/**\n\t * Appends a child node to this node.\n\t * @param {!TreeNode} child Orphan child node.\n\t */\n\taddChild(child) {\n\t\tassertChildHasNoParent(child);\n\t\tchild.setParent(this);\n\t\tthis.children_ = this.children_ || [];\n\t\tthis.children_.push(child);\n\t}\n\n\t/**\n\t * Tells whether this node is the ancestor of the given node.\n\t * @param {!TreeNode} node A node.\n\t * @return {boolean} Whether this node is the ancestor of {@code node}.\n\t */\n\tcontains(node) {\n\t\tlet current = node.getParent();\n\t\twhile (current) {\n\t\t\tif (current === this) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t\tcurrent = current.getParent();\n\t\t}\n\t\treturn false;\n\t}\n\n\t/**\n\t * @return {!Array<TreeNode>} All ancestor nodes in bottom-up order.\n\t */\n\tgetAncestors() {\n\t\tlet ancestors = [];\n\t\tlet node = this.getParent();\n\t\twhile (node) {\n\t\t\tancestors.push(node);\n\t\t\tnode = node.getParent();\n\t\t}\n\t\treturn ancestors;\n\t}\n\n\t/**\n\t * Gets the child node of this node at the given index.\n\t * @param {number} index Child index.\n\t * @return {?TreeNode} The node at the given index\n\t * or null if not found.\n\t */\n\tgetChildAt(index) {\n\t\treturn this.getChildren()[index] || null;\n\t}\n\n\t/**\n\t * @return {?Array<!TreeNode>} Child nodes or null in case of leaf node.\n\t */\n\tgetChildren() {\n\t\treturn this.children_ || TreeNode.EMPTY_ARRAY;\n\t}\n\n\t/**\n\t * @return {number} The number of children.\n\t */\n\tgetChildCount() {\n\t\treturn this.getChildren().length;\n\t}\n\n\t/**\n\t * @return {number} The number of ancestors of the node.\n\t */\n\tgetDepth() {\n\t\tlet depth = 0;\n\t\tlet node = this;\n\t\twhile (node.getParent()) {\n\t\t\tdepth++;\n\t\t\tnode = node.getParent();\n\t\t}\n\t\treturn depth;\n\t}\n\n\t/**\n\t * @return {?TreeNode} Parent node or null if it has no parent.\n\t */\n\tgetParent() {\n\t\treturn this.parent_;\n\t}\n\n\t/**\n\t * @return {!TreeNode} The root of the tree structure, i.e. the farthest\n\t * ancestor of the node or the node itself if it has no parents.\n\t */\n\tgetRoot() {\n\t\tlet root = this;\n\t\twhile (root.getParent()) {\n\t\t\troot = root.getParent();\n\t\t}\n\t\treturn root;\n\t}\n\n\t/**\n\t * Gets the value.\n\t * @return {V} The value.\n\t */\n\tgetValue() {\n\t\treturn this.value_;\n\t}\n\n\t/**\n\t * @return {boolean} Whether the node is a leaf node.\n\t */\n\tisLeaf() {\n\t\treturn !this.getChildCount();\n\t}\n\n\t/**\n\t * Removes the given child node of this node.\n\t * @param {TreeNode} child The node to remove.\n\t * @return {TreeNode} The removed node if any, null otherwise.\n\t */\n\tremoveChild(child) {\n\t\tif (array.remove(this.getChildren(), child)) {\n\t\t\treturn child;\n\t\t}\n\t\treturn null;\n\t}\n\n\t/**\n\t * Sets the parent node of this node. The callers must ensure that the\n\t * parent node and only that has this node among its children.\n\t * @param {TreeNode} parent The parent to set. If null, the node will be\n\t * detached from the tree.\n\t * @protected\n\t */\n\tsetParent(parent) {\n\t\tthis.parent_ = parent;\n\t}\n\n\t/**\n\t * Traverses the subtree. The first callback starts with this node,\n\t * and visits the descendant nodes depth-first, in preorder.\n\t * The second callback, starts with deepest child then visits\n\t * the ancestor nodes depth-first, in postorder. E.g.\n\t *\n\t * \t A\n\t * / \\\n\t * B C\n\t * / / \\\n\t * D E F\n\t *\n\t * preorder -> ['A', 'B', 'D', 'C', 'E', 'F']\n\t * postorder -> ['D', 'B', 'E', 'F', 'C', 'A']\n\t *\n\t * @param {function=} opt_preorderFn The callback to execute when visiting a node.\n\t * @param {function=} opt_postorderFn The callback to execute before leaving a node.\n\t */\n\ttraverse(opt_preorderFn, opt_postorderFn) {\n\t\tif (opt_preorderFn) {\n\t\t\topt_preorderFn(this);\n\t\t}\n\t\tthis.getChildren().forEach((child) => child.traverse(opt_preorderFn, opt_postorderFn));\n\t\tif (opt_postorderFn) {\n\t\t\topt_postorderFn(this);\n\t\t}\n\t}\n\n}\n\n/**\n * Constant for empty array to avoid unnecessary allocations.\n * @private\n */\nTreeNode.EMPTY_ARRAY = [];\n\n/**\n * Asserts that child has no parent.\n * @param {TreeNode} child A child.\n * @private\n */\nconst assertChildHasNoParent = function(child) {\n\tif (child.getParent()) {\n\t\tthrow new Error('Cannot add child with parent.');\n\t}\n};\n\nexport default TreeNode;\n","'use strict';\n\nimport MultiMap from '../MultiMap';\nimport TreeNode from '../TreeNode';\n\nexport { MultiMap, TreeNode };\n","'use strict';\n\nimport { isDef, string } from 'metal';\nimport parse from './parse';\nimport { MultiMap } from 'metal-structs';\n\nvar parseFn_ = parse;\n\nclass Uri {\n\n\t/**\n\t * This class contains setters and getters for the parts of the URI.\n\t * The following figure displays an example URIs and their component parts.\n\t *\n\t * path\n\t *\t ┌───┴────┐\n\t *\t abc://example.com:123/path/data?key=value#fragid1\n\t *\t └┬┘ └────┬────┘ └┬┘ └───┬───┘ └──┬──┘\n\t * protocol hostname port search hash\n\t * └──────┬───────┘\n\t * host\n\t *\n\t * @param {*=} opt_uri Optional string URI to parse\n\t * @constructor\n\t */\n\tconstructor(opt_uri = '') {\n\t\tthis.url = Uri.parse(this.maybeAddProtocolAndHostname_(opt_uri));\n\t}\n\n\t/**\n\t * Adds parameters to uri from a <code>MultiMap</code> as source.\n\t * @param {MultiMap} multimap The <code>MultiMap</code> containing the\n\t * parameters.\n\t * @protected\n\t * @chainable\n\t */\n\taddParametersFromMultiMap(multimap) {\n\t\tmultimap.names().forEach((name) => {\n\t\t\tmultimap.getAll(name).forEach((value) => {\n\t\t\t\tthis.addParameterValue(name, value);\n\t\t\t});\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds the value of the named query parameters.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value. Will be explicitly casted to String.\n\t * @chainable\n\t */\n\taddParameterValue(name, value) {\n\t\tthis.ensureQueryInitialized_();\n\t\tif (isDef(value)) {\n\t\t\tvalue = String(value);\n\t\t}\n\t\tthis.query.add(name, value);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds the values of the named query parameter.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value.\n\t * @chainable\n\t */\n\taddParameterValues(name, values) {\n\t\tvalues.forEach((value) => this.addParameterValue(name, value));\n\t\treturn this;\n\t}\n\n\t/**\n\t * Ensures query internal map is initialized and synced with initial value\n\t * extracted from URI search part.\n\t * @protected\n\t */\n\tensureQueryInitialized_() {\n\t\tif (this.query) {\n\t\t\treturn;\n\t\t}\n\t\tthis.query = new MultiMap();\n\t\tvar search = this.url.search;\n\t\tif (search) {\n\t\t\tsearch.substring(1).split('&').forEach((param) => {\n\t\t\t\tvar [key, value] = param.split('=');\n\t\t\t\tif (isDef(value)) {\n\t\t\t\t\tvalue = Uri.urlDecode(value);\n\t\t\t\t}\n\t\t\t\tthis.addParameterValue(key, value);\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Gets the hash part of uri.\n\t * @return {string}\n\t */\n\tgetHash() {\n\t\treturn this.url.hash || '';\n\t}\n\n\t/**\n\t * Gets the host part of uri. E.g. <code>[hostname]:[port]</code>.\n\t * @return {string}\n\t */\n\tgetHost() {\n\t\tvar host = this.getHostname();\n\t\tif (host) {\n\t\t\tvar port = this.getPort();\n\t\t\tif (port && port !== '80') {\n\t\t\t\thost += ':' + port;\n\t\t\t}\n\t\t}\n\t\treturn host;\n\t}\n\n\t/**\n\t * Gets the hostname part of uri without protocol and port.\n\t * @return {string}\n\t */\n\tgetHostname() {\n\t\tvar hostname = this.url.hostname;\n\t\tif (hostname === Uri.HOSTNAME_PLACEHOLDER) {\n\t\t\treturn '';\n\t\t}\n\t\treturn hostname;\n\t}\n\n\t/**\n\t * Gets the origin part of uri. E.g. <code>http://[hostname]:[port]</code>.\n\t * @return {string}\n\t */\n\tgetOrigin() {\n\t\tvar host = this.getHost();\n\t\tif (host) {\n\t\t\treturn this.getProtocol() + '//' + host;\n\t\t}\n\t\treturn '';\n\t}\n\n\t/**\n\t * Returns the first value for a given parameter or undefined if the given\n\t * parameter name does not appear in the query string.\n\t * @param {string} paramName Unescaped parameter name.\n\t * @return {string|undefined} The first value for a given parameter or\n\t * undefined if the given parameter name does not appear in the query\n\t * string.\n\t */\n\tgetParameterValue(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.get(name);\n\t}\n\n\t/**\n\t * Returns the value<b>s</b> for a given parameter as a list of decoded\n\t * query parameter values.\n\t * @param {string} name The parameter to get values for.\n\t * @return {!Array<?>} The values for a given parameter as a list of decoded\n\t * query parameter values.\n\t */\n\tgetParameterValues(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.getAll(name);\n\t}\n\n\t/**\n\t * Returns the name<b>s</b> of the parameters.\n\t * @return {!Array<string>} The names for the parameters as a list of\n\t * strings.\n\t */\n\tgetParameterNames() {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.names();\n\t}\n\n\t/**\n\t * Gets the function currently being used to parse URIs.\n\t * @return {!function()}\n\t */\n\tstatic getParseFn() {\n\t\treturn parseFn_;\n\t}\n\n\t/**\n\t * Gets the pathname part of uri.\n\t * @return {string}\n\t */\n\tgetPathname() {\n\t\treturn this.url.pathname;\n\t}\n\n\t/**\n\t * Gets the port number part of uri as string.\n\t * @return {string}\n\t */\n\tgetPort() {\n\t\treturn this.url.port;\n\t}\n\n\t/**\n\t * Gets the protocol part of uri. E.g. <code>http:</code>.\n\t * @return {string}\n\t */\n\tgetProtocol() {\n\t\treturn this.url.protocol;\n\t}\n\n\t/**\n\t * Gets the search part of uri. Search value is retrieved from query\n\t * parameters.\n\t * @return {string}\n\t */\n\tgetSearch() {\n\t\tvar search = '';\n\t\tvar querystring = '';\n\t\tthis.getParameterNames().forEach((name) => {\n\t\t\tthis.getParameterValues(name).forEach((value) => {\n\t\t\t\tquerystring += name;\n\t\t\t\tif (isDef(value)) {\n\t\t\t\t\tquerystring += '=' + encodeURIComponent(value);\n\t\t\t\t}\n\t\t\t\tquerystring += '&';\n\t\t\t});\n\t\t});\n\t\tquerystring = querystring.slice(0, -1);\n\t\tif (querystring) {\n\t\t\tsearch += '?' + querystring;\n\t\t}\n\t\treturn search;\n\t}\n\n\t/**\n\t * Checks if uri contains the parameter.\n\t * @param {string} name\n\t * @return {boolean}\n\t */\n\thasParameter(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\treturn this.query.contains(name);\n\t}\n\n\t/**\n\t * Makes this URL unique by adding a random param to it. Useful for avoiding\n\t * cache.\n\t */\n\tmakeUnique() {\n\t\tthis.setParameterValue(Uri.RANDOM_PARAM, string.getRandomString());\n\t\treturn this;\n\t}\n\n\t/**\n\t * Maybe adds protocol and a hostname placeholder on a parial URI if needed.\n\t * Relevent for compatibility with <code>URL</code> native object.\n\t * @param {string=} opt_uri\n\t * @return {string} URI with protocol and hostname placeholder.\n\t */\n\tmaybeAddProtocolAndHostname_(opt_uri) {\n\t\tvar url = opt_uri;\n\t\tif (opt_uri.indexOf('://') === -1 &&\n\t\t\topt_uri.indexOf('javascript:') !== 0) { // jshint ignore:line\n\n\t\t\turl = Uri.DEFAULT_PROTOCOL;\n\t\t\tif (opt_uri[0] !== '/' || opt_uri[1] !== '/') {\n\t\t\t\turl += '//';\n\t\t\t}\n\n\t\t\tswitch (opt_uri.charAt(0)) {\n\t\t\t\tcase '.':\n\t\t\t\tcase '?':\n\t\t\t\tcase '#':\n\t\t\t\t\turl += Uri.HOSTNAME_PLACEHOLDER;\n\t\t\t\t\turl += '/';\n\t\t\t\t\turl += opt_uri;\n\t\t\t\t\tbreak;\n\t\t\t\tcase '':\n\t\t\t\tcase '/':\n\t\t\t\t\tif (opt_uri[1] !== '/') {\n\t\t\t\t\t\turl += Uri.HOSTNAME_PLACEHOLDER;\n\t\t\t\t\t}\n\t\t\t\t\turl += opt_uri;\n\t\t\t\t\tbreak;\n\t\t\t\tdefault:\n\t\t\t\t\turl += opt_uri;\n\t\t\t}\n\t\t}\n\t\treturn url;\n\t}\n\n\t/**\n\t * Normalizes the parsed object to be in the expected standard.\n\t * @param {!Object}\n\t */\n\tstatic normalizeObject(parsed) {\n\t\tvar length = parsed.pathname ? parsed.pathname.length : 0;\n\t\tif (length > 1 && parsed.pathname[length - 1] === '/') {\n\t\t\tparsed.pathname = parsed.pathname.substr(0, length - 1);\n\t\t}\n\t\treturn parsed;\n\t}\n\n\t/**\n\t * Parses the given uri string into an object.\n\t * @param {*=} opt_uri Optional string URI to parse\n\t */\n\tstatic parse(opt_uri) {\n\t\treturn Uri.normalizeObject(parseFn_(opt_uri));\n\t}\n\n\t/**\n\t * Removes the named query parameter.\n\t * @param {string} name The parameter to remove.\n\t * @chainable\n\t */\n\tremoveParameter(name) {\n\t\tthis.ensureQueryInitialized_();\n\t\tthis.query.remove(name);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Removes uniqueness parameter of the uri.\n\t * @chainable\n\t */\n\tremoveUnique() {\n\t\tthis.removeParameter(Uri.RANDOM_PARAM);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the hash.\n\t * @param {string} hash\n\t * @chainable\n\t */\n\tsetHash(hash) {\n\t\tthis.url.hash = hash;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the hostname.\n\t * @param {string} hostname\n\t * @chainable\n\t */\n\tsetHostname(hostname) {\n\t\tthis.url.hostname = hostname;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the value of the named query parameters, clearing previous values\n\t * for that key.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value.\n\t * @chainable\n\t */\n\tsetParameterValue(name, value) {\n\t\tthis.removeParameter(name);\n\t\tthis.addParameterValue(name, value);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the values of the named query parameters, clearing previous values\n\t * for that key.\n\t * @param {string} key The parameter to set.\n\t * @param {*} value The new value.\n\t * @chainable\n\t */\n\tsetParameterValues(name, values) {\n\t\tthis.removeParameter(name);\n\t\tvalues.forEach((value) => this.addParameterValue(name, value));\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the pathname.\n\t * @param {string} pathname\n\t * @chainable\n\t */\n\tsetPathname(pathname) {\n\t\tthis.url.pathname = pathname;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the port number.\n\t * @param {*} port Port number.\n\t * @chainable\n\t */\n\tsetPort(port) {\n\t\tthis.url.port = port;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the function that will be used for parsing the original string uri\n\t * into an object.\n\t * @param {!function()} parseFn\n\t */\n\tstatic setParseFn(parseFn) {\n\t\tparseFn_ = parseFn;\n\t}\n\n\t/**\n\t * Sets the protocol. If missing <code>http:</code> is used as default.\n\t * @param {string} protocol\n\t * @chainable\n\t */\n\tsetProtocol(protocol) {\n\t\tthis.url.protocol = protocol;\n\t\tif (this.url.protocol[this.url.protocol.length - 1] !== ':') {\n\t\t\tthis.url.protocol += ':';\n\t\t}\n\t\treturn this;\n\t}\n\n\t/**\n\t * @return {string} The string form of the url.\n\t * @override\n\t */\n\ttoString() {\n\t\tvar href = '';\n\t\tvar host = this.getHost();\n\t\tif (host) {\n\t\t\thref += this.getProtocol() + '//';\n\t\t}\n\t\thref += host + this.getPathname() + this.getSearch() + this.getHash();\n\t\treturn href;\n\t}\n\n\t/**\n\t * Joins the given paths.\n\t * @param {string} basePath\n\t * @param {...string} ...paths Any number of paths to be joined with the base url.\n\t * @static\n\t */\n\tstatic joinPaths(basePath, ...paths) {\n\t\tif (basePath.charAt(basePath.length - 1) === '/') {\n\t\t\tbasePath = basePath.substring(0, basePath.length - 1);\n\t\t}\n\t\tpaths = paths.map(path => path.charAt(0) === '/' ? path.substring(1) : path);\n\t\treturn [basePath].concat(paths).join('/').replace(/\\/$/, '');\n\t}\n\n\t/**\n\t * URL-decodes the string. We need to specially handle '+'s because\n\t * the javascript library doesn't convert them to spaces.\n\t * @param {string} str The string to url decode.\n\t * @return {string} The decoded {@code str}.\n\t */\n\tstatic urlDecode(str) {\n\t\treturn decodeURIComponent(str.replace(/\\+/g, ' '));\n\t}\n\n}\n\n/**\n * Default protocol value.\n * @type {string}\n * @default http:\n * @static\n */\nUri.DEFAULT_PROTOCOL = 'http:';\n\n/**\n * Hostname placeholder. Relevant to internal usage only.\n * @type {string}\n * @static\n */\nUri.HOSTNAME_PLACEHOLDER = 'hostname' + Date.now();\n\n/**\n * Name used by the param generated by `makeUnique`.\n * @type {string}\n * @static\n */\nUri.RANDOM_PARAM = 'zx';\n\nexport default Uri;\n","'use strict';\n\nimport globals from '../globals/globals';\nimport Uri from 'metal-uri';\n\n/**\n * A collection of static utility functions.\n * @const\n */\nclass utils {\n\n\t/**\n\t * Copies attributes form source node to target node.\n\t * @return {void}\n\t * @static\n\t */\n\tstatic copyNodeAttributes(source, target) {\n\t\tArray.prototype.slice.call(source.attributes).forEach((attribute) => target.setAttribute(attribute.name, attribute.value));\n\t}\n\n\t/**\n\t * Gets the current browser path including hashbang.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getCurrentBrowserPath() {\n\t\treturn this.getCurrentBrowserPathWithoutHash() + globals.window.location.hash;\n\t}\n\n\t/**\n\t * Gets the current browser path excluding hashbang.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getCurrentBrowserPathWithoutHash() {\n\t\treturn globals.window.location.pathname + globals.window.location.search;\n\t}\n\n\t/**\n\t * Extracts the path part of an url.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getUrlPath(url) {\n\t\tvar uri = new Uri(url);\n\t\treturn uri.getPathname() + uri.getSearch() + uri.getHash();\n\t}\n\n\t/**\n\t * Extracts the path part of an url without hashbang.\n\t * @return {!string}\n\t * @static\n\t */\n\tstatic getUrlPathWithoutHash(url) {\n\t\tvar uri = new Uri(url);\n\t\treturn uri.getPathname() + uri.getSearch();\n\t}\n\n\t/**\n\t * Checks if url is in the same browser current url excluding the hashbang.\n\t * @param {!string} url\n\t * @return {boolean}\n\t * @static\n\t */\n\tstatic isCurrentBrowserPath(url) {\n\t\tif (url) {\n\t\t\treturn utils.getUrlPathWithoutHash(url) === this.getCurrentBrowserPathWithoutHash();\n\t\t}\n\t\treturn false;\n\t}\n\n\t/**\n\t * Returns true if HTML5 History api is supported.\n\t * @return {boolean}\n\t * @static\n\t */\n\tstatic isHtml5HistorySupported() {\n\t\treturn !!(globals.window.history && globals.window.history.pushState);\n\t}\n\n\t/**\n\t * Removes all attributes form node.\n\t * @return {void}\n\t * @static\n\t */\n\tstatic clearNodeAttributes(node) {\n\t\tArray.prototype.slice.call(node.attributes).forEach((attribute) => node.removeAttribute(attribute.name));\n\t}\n\n}\n\nexport default utils;","'use strict';\n\n/**\n * Debounces function execution.\n * @param {!function()} fn\n * @param {number} delay\n * @return {!function()}\n */\nfunction debounce(fn, delay) {\n\treturn function debounced() {\n\t\tvar args = arguments;\n\t\tcancelDebounce(debounced);\n\t\tdebounced.id = setTimeout(function() {\n\t\t\tfn.apply(null, args);\n\t\t}, delay);\n\t};\n}\n\n/**\n * Cancels the scheduled debounced function.\n */\nfunction cancelDebounce(debounced) {\n\tclearTimeout(debounced.id);\n}\n\nexport default debounce;\nexport { cancelDebounce, debounce };\n","'use strict';\n\nconst METAL_DATA = '__metal_data__';\n\nclass domData {\n\t/**\n\t * Gets Metal.js's data for the given element.\n\t * @param {!Element} element\n\t * @return {!Object}\n\t */\n\tstatic get(element) {\n\t\tif (!element[METAL_DATA]) {\n\t\t\telement[METAL_DATA] = {\n\t\t\t\tdelegating: {},\n\t\t\t\tlisteners: {}\n\t\t\t};\n\t\t}\n\t\treturn element[METAL_DATA];\n\t}\n}\n\nexport default domData;\n","'use strict';\n\nimport { Disposable } from 'metal';\n\n/**\n * EventHandle utility. Holds information about an event subscription, and\n * allows removing them easily.\n * EventHandle is a Disposable, but it's important to note that the\n * EventEmitter that created it is not the one responsible for disposing it.\n * That responsibility is for the code that holds a reference to it.\n * @param {!EventEmitter} emitter Emitter the event was subscribed to.\n * @param {string} event The name of the event that was subscribed to.\n * @param {!Function} listener The listener subscribed to the event.\n * @constructor\n * @extends {Disposable}\n */\nclass EventHandle extends Disposable {\n\tconstructor(emitter, event, listener) {\n\t\tsuper();\n\n\t\t/**\n\t\t * The EventEmitter instance that the event was subscribed to.\n\t\t * @type {EventEmitter}\n\t\t * @protected\n\t\t */\n\t\tthis.emitter_ = emitter;\n\n\t\t/**\n\t\t * The name of the event that was subscribed to.\n\t\t * @type {string}\n\t\t * @protected\n\t\t */\n\t\tthis.event_ = event;\n\n\t\t/**\n\t\t * The listener subscribed to the event.\n\t\t * @type {Function}\n\t\t * @protected\n\t\t */\n\t\tthis.listener_ = listener;\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.removeListener();\n\t\tthis.emitter_ = null;\n\t\tthis.listener_ = null;\n\t}\n\n\t/**\n\t * Removes the listener subscription from the emitter.\n\t */\n\tremoveListener() {\n\t\tif (!this.emitter_.isDisposed()) {\n\t\t\tthis.emitter_.removeListener(this.event_, this.listener_);\n\t\t}\n\t}\n}\n\nexport default EventHandle;\n","'use strict';\n\nimport { array, Disposable, isFunction, isString } from 'metal';\nimport EventHandle from './EventHandle';\n\n/**\n * EventEmitter utility.\n * @constructor\n * @extends {Disposable}\n */\nclass EventEmitter extends Disposable {\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds event listeners scoped by event type.\n\t\t * @type {!Object<string, !Array<!function()>>}\n\t\t * @protected\n\t\t */\n\t\tthis.events_ = [];\n\n\t\t/**\n\t\t * The maximum number of listeners allowed for each event type. If the number\n\t\t * becomes higher than the max, a warning will be issued.\n\t\t * @type {number}\n\t\t * @protected\n\t\t */\n\t\tthis.maxListeners_ = 10;\n\n\t\t/**\n\t\t * Configuration option which determines if an event facade should be sent\n\t\t * as a param of listeners when emitting events. If set to true, the facade\n\t\t * will be passed as the first argument of the listener.\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.shouldUseFacade_ = false;\n\t}\n\n\t/**\n\t * Adds a listener to the end of the listeners array for the specified events.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @param {boolean} opt_default Flag indicating if this listener is a default\n\t * action for this event. Default actions are run last, and only if no previous\n\t * listener call `preventDefault()` on the received event facade.\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\taddListener(events, listener, opt_default) {\n\t\tthis.validateListener_(listener);\n\n\t\tevents = this.normalizeEvents_(events);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tthis.addSingleListener_(events[i], listener, opt_default);\n\t\t}\n\n\t\treturn new EventHandle(this, events, listener);\n\t}\n\n\t/**\n\t * Adds a listener to the end of the listeners array for a single event.\n\t * @param {string} event\n\t * @param {!Function} listener\n\t * @param {boolean} opt_default Flag indicating if this listener is a default\n\t * action for this event. Default actions are run last, and only if no previous\n\t * listener call `preventDefault()` on the received event facade.\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t * @param {Function=} opt_origin The original function that was added as a\n\t * listener, if there is any.\n\t * @protected\n\t */\n\taddSingleListener_(event, listener, opt_default, opt_origin) {\n\t\tthis.emit('newListener', event, listener);\n\n\t\tif (!this.events_[event]) {\n\t\t\tthis.events_[event] = [];\n\t\t}\n\t\tthis.events_[event].push({\n\t\t\tdefault: opt_default,\n\t\t\tfn: listener,\n\t\t\torigin: opt_origin\n\t\t});\n\n\t\tvar listeners = this.events_[event];\n\t\tif (listeners.length > this.maxListeners_ && !listeners.warned) {\n\t\t\tconsole.warn(\n\t\t\t\t'Possible EventEmitter memory leak detected. %d listeners added ' +\n\t\t\t\t'for event %s. Use emitter.setMaxListeners() to increase limit.',\n\t\t\t\tlisteners.length,\n\t\t\t\tevent\n\t\t\t);\n\t\t\tlisteners.warned = true;\n\t\t}\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.events_ = [];\n\t}\n\n\t/**\n\t * Execute each of the listeners in order with the supplied arguments.\n\t * @param {string} event\n\t * @param {*} opt_args [arg1], [arg2], [...]\n\t * @return {boolean} Returns true if event had listeners, false otherwise.\n\t */\n\temit(event) {\n\t\tvar args = array.slice(arguments, 1);\n\t\tvar listeners = (this.events_[event] || []).concat();\n\n\t\tvar facade;\n\t\tif (this.getShouldUseFacade()) {\n\t\t\tfacade = {\n\t\t\t\tpreventDefault: function() {\n\t\t\t\t\tfacade.preventedDefault = true;\n\t\t\t\t},\n\t\t\t\ttarget: this,\n\t\t\t\ttype: event\n\t\t\t};\n\t\t\targs.push(facade);\n\t\t}\n\n\t\tvar defaultListeners = [];\n\t\tfor (var i = 0; i < listeners.length; i++) {\n\t\t\tif (listeners[i].default) {\n\t\t\t\tdefaultListeners.push(listeners[i]);\n\t\t\t} else {\n\t\t\t\tlisteners[i].fn.apply(this, args);\n\t\t\t}\n\t\t}\n\t\tif (!facade || !facade.preventedDefault) {\n\t\t\tfor (var j = 0; j < defaultListeners.length; j++) {\n\t\t\t\tdefaultListeners[j].fn.apply(this, args);\n\t\t\t}\n\t\t}\n\n\n\t\tif (event !== '*') {\n\t\t\tthis.emit.apply(this, ['*', event].concat(args));\n\t\t}\n\n\t\treturn listeners.length > 0;\n\t}\n\n\t/**\n\t * Gets the configuration option which determines if an event facade should\n\t * be sent as a param of listeners when emitting events. If set to true, the\n\t * facade will be passed as the first argument of the listener.\n\t * @return {boolean}\n\t */\n\tgetShouldUseFacade() {\n\t\treturn this.shouldUseFacade_;\n\t}\n\n\t/**\n\t * Returns an array of listeners for the specified event.\n\t * @param {string} event\n\t * @return {Array} Array of listeners.\n\t */\n\tlisteners(event) {\n\t\treturn (this.events_[event] || []).map(listener => listener.fn);\n\t}\n\n\t/**\n\t * Adds a listener that will be invoked a fixed number of times for the\n\t * events. After each event is triggered the specified amount of times, the\n\t * listener is removed for it.\n\t * @param {!(Array|string)} events\n\t * @param {number} amount The amount of times this event should be listened\n\t * to.\n\t * @param {!Function} listener\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\tmany(events, amount, listener) {\n\t\tevents = this.normalizeEvents_(events);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tthis.many_(events[i], amount, listener);\n\t\t}\n\n\t\treturn new EventHandle(this, events, listener);\n\t}\n\n\t/**\n\t * Adds a listener that will be invoked a fixed number of times for a single\n\t * event. After the event is triggered the specified amount of times, the\n\t * listener is removed.\n\t * @param {string} event\n\t * @param {number} amount The amount of times this event should be listened\n\t * to.\n\t * @param {!Function} listener\n\t * @protected\n\t */\n\tmany_(event, amount, listener) {\n\t\tvar self = this;\n\n\t\tif (amount <= 0) {\n\t\t\treturn;\n\t\t}\n\n\t\tfunction handlerInternal() {\n\t\t\tif (--amount === 0) {\n\t\t\t\tself.removeListener(event, handlerInternal);\n\t\t\t}\n\t\t\tlistener.apply(self, arguments);\n\t\t}\n\n\t\tself.addSingleListener_(event, handlerInternal, false, listener);\n\t}\n\n\t/**\n\t * Checks if a listener object matches the given listener function. To match,\n\t * it needs to either point to that listener or have it as its origin.\n\t * @param {!Object} listenerObj\n\t * @param {!Function} listener\n\t * @return {boolean}\n\t * @protected\n\t */\n\tmatchesListener_(listenerObj, listener) {\n\t\treturn listenerObj.fn === listener ||\n\t\t\t(listenerObj.origin && listenerObj.origin === listener);\n\t}\n\n\t/**\n\t * Converts the parameter to an array if only one event is given.\n\t * @param {!(Array|string)} events\n\t * @return {!Array}\n\t * @protected\n\t */\n\tnormalizeEvents_(events) {\n\t\treturn isString(events) ? [events] : events;\n\t}\n\n\t/**\n\t * Removes a listener for the specified events.\n\t * Caution: changes array indices in the listener array behind the listener.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\toff(events, listener) {\n\t\tthis.validateListener_(listener);\n\n\t\tevents = this.normalizeEvents_(events);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tvar listenerObjs = this.events_[events[i]] || [];\n\t\t\tthis.removeMatchingListenerObjs_(listenerObjs, listener);\n\t\t}\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds a listener to the end of the listeners array for the specified events.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\ton() {\n\t\treturn this.addListener.apply(this, arguments);\n\t}\n\n\t/**\n\t * Adds a one time listener for the events. This listener is invoked only the\n\t * next time each event is fired, after which it is removed.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!EventHandle} Can be used to remove the listener.\n\t */\n\tonce(events, listener) {\n\t\treturn this.many(events, 1, listener);\n\t}\n\n\t/**\n\t * Removes all listeners, or those of the specified events. It's not a good\n\t * idea to remove listeners that were added elsewhere in the code,\n\t * especially when it's on an emitter that you didn't create.\n\t * @param {(Array|string)=} opt_events\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tremoveAllListeners(opt_events) {\n\t\tif (opt_events) {\n\t\t\tvar events = this.normalizeEvents_(opt_events);\n\t\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\t\tthis.events_[events[i]] = null;\n\t\t\t}\n\t\t} else {\n\t\t\tthis.events_ = {};\n\t\t}\n\t\treturn this;\n\t}\n\n\t/**\n\t * Removes all listener objects from the given array that match the given\n\t * listener function.\n\t * @param {!Array.<Object>} listenerObjs\n\t * @param {!Function} listener\n\t * @protected\n\t */\n\tremoveMatchingListenerObjs_(listenerObjs, listener) {\n\t\tfor (var i = listenerObjs.length - 1; i >= 0; i--) {\n\t\t\tif (this.matchesListener_(listenerObjs[i], listener)) {\n\t\t\t\tlistenerObjs.splice(i, 1);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes a listener for the specified events.\n\t * Caution: changes array indices in the listener array behind the listener.\n\t * @param {!(Array|string)} events\n\t * @param {!Function} listener\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tremoveListener() {\n\t\treturn this.off.apply(this, arguments);\n\t}\n\n\t/**\n\t * By default EventEmitters will print a warning if more than 10 listeners\n\t * are added for a particular event. This is a useful default which helps\n\t * finding memory leaks. Obviously not all Emitters should be limited to 10.\n\t * This function allows that to be increased. Set to zero for unlimited.\n\t * @param {number} max The maximum number of listeners.\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tsetMaxListeners(max) {\n\t\tthis.maxListeners_ = max;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Sets the configuration option which determines if an event facade should\n\t * be sent as a param of listeners when emitting events. If set to true, the\n\t * facade will be passed as the first argument of the listener.\n\t * @param {boolean} shouldUseFacade\n\t * @return {!Object} Returns emitter, so calls can be chained.\n\t */\n\tsetShouldUseFacade(shouldUseFacade) {\n\t\tthis.shouldUseFacade_ = shouldUseFacade;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Checks if the given listener is valid, throwing an exception when it's not.\n\t * @param {*} listener\n\t * @protected\n\t */\n\tvalidateListener_(listener) {\n\t\tif (!isFunction(listener)) {\n\t\t\tthrow new TypeError('Listener must be a function');\n\t\t}\n\t}\n}\n\nexport default EventEmitter;\n","'use strict';\n\nimport { array, object, Disposable } from 'metal';\n\n/**\n * EventEmitterProxy utility. It's responsible for linking two EventEmitter\n * instances together, emitting events from the first emitter through the\n * second one. That means that listening to a supported event on the target\n * emitter will mean listening to it on the origin emitter as well.\n * @param {EventEmitter} originEmitter Events originated on this emitter\n * will be fired for the target emitter's listeners as well.\n * @param {EventEmitter} targetEmitter Event listeners attached to this emitter\n * will also be triggered when the event is fired by the origin emitter.\n * @param {Object} opt_blacklist Optional blacklist of events that should not be\n * proxied.\n * @constructor\n * @extends {Disposable}\n */\nclass EventEmitterProxy extends Disposable {\n\tconstructor(originEmitter, targetEmitter, opt_blacklist, opt_whitelist) {\n\t\tsuper();\n\n\t\t/**\n\t\t * Map of events that should not be proxied.\n\t\t * @type {Object}\n\t\t * @protected\n\t\t */\n\t\tthis.blacklist_ = object.mixin({\n\t\t\tnewListener: true\n\t\t}, opt_blacklist);\n\n\t\t/**\n\t\t * The origin emitter. This emitter's events will be proxied through the\n\t\t * target emitter.\n\t\t * @type {EventEmitter}\n\t\t * @protected\n\t\t */\n\t\tthis.originEmitter_ = originEmitter;\n\n\t\t/**\n\t\t * A list of events that are pending to be listened by an actual origin\n\t\t * emitter. Events are stored here when the origin doesn't exist, so they\n\t\t * can be set on a new origin when one is set.\n\t\t * @type {!Array}\n\t\t * @protected\n\t\t */\n\t\tthis.pendingEvents_ = [];\n\n\t\t/**\n\t\t * Holds a map of events from the origin emitter that are already being proxied.\n\t\t * @type {Object<string, !EventHandle>}\n\t\t * @protected\n\t\t */\n\t\tthis.proxiedEvents_ = {};\n\n\t\t/**\n\t\t * The target emitter. This emitter will emit all events that come from\n\t\t * the origin emitter.\n\t\t * @type {EventEmitter}\n\t\t * @protected\n\t\t */\n\t\tthis.targetEmitter_ = targetEmitter;\n\n\t\t/**\n\t\t * Map of events that should be proxied. If whitelist is set blacklist is ignored.\n\t\t * @type {Object}\n\t\t * @protected\n\t\t */\n\t\tthis.whitelist_ = opt_whitelist;\n\n\t\tthis.startProxy_();\n\t}\n\n\t/**\n\t * Adds the given listener for the given event.\n\t * @param {string} event\n\t * @param {!function()} listener\n\t * @return {!EventHandle} The listened event's handle.\n\t * @protected\n\t */\n\taddListener_(event, listener) {\n\t\treturn this.originEmitter_.on(event, listener);\n\t}\n\n\t/**\n\t * Adds the proxy listener for the given event.\n\t * @param {string} event\n\t * @return {!EventHandle} The listened event's handle.\n\t * @protected\n\t */\n\taddListenerForEvent_(event) {\n\t\treturn this.addListener_(event, this.emitOnTarget_.bind(this, event));\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisposeInternal() {\n\t\tthis.removeListeners_();\n\t\tthis.proxiedEvents_ = null;\n\t\tthis.originEmitter_ = null;\n\t\tthis.targetEmitter_ = null;\n\t}\n\n\t/**\n\t * Emits the specified event type on the target emitter.\n\t * @param {string} eventType\n\t * @protected\n\t */\n\temitOnTarget_(eventType) {\n\t\tvar args = [eventType].concat(array.slice(arguments, 1));\n\t\tthis.targetEmitter_.emit.apply(this.targetEmitter_, args);\n\t}\n\n\t/**\n\t * Proxies the given event from the origin to the target emitter.\n\t * @param {string} event\n\t */\n\tproxyEvent(event) {\n\t\tif (this.shouldProxyEvent_(event)) {\n\t\t\tthis.tryToAddListener_(event);\n\t\t}\n\t}\n\n\t/**\n\t * Removes the proxy listener for all events.\n\t * @protected\n\t */\n\tremoveListeners_() {\n\t\tvar events = Object.keys(this.proxiedEvents_);\n\t\tfor (var i = 0; i < events.length; i++) {\n\t\t\tthis.proxiedEvents_[events[i]].removeListener();\n\t\t}\n\t\tthis.proxiedEvents_ = {};\n\t\tthis.pendingEvents_ = [];\n\t}\n\n\t/**\n\t * Changes the origin emitter. This automatically detaches any events that\n\t * were already being proxied from the previous emitter, and starts proxying\n\t * them on the new emitter instead.\n\t * @param {!EventEmitter} originEmitter\n\t */\n\tsetOriginEmitter(originEmitter) {\n\t\tvar events = this.originEmitter_ ?\n\t\t\tObject.keys(this.proxiedEvents_) :\n\t\t\tthis.pendingEvents_;\n\t\tthis.removeListeners_();\n\t\tthis.originEmitter_ = originEmitter;\n\t\tevents.forEach(event => this.proxyEvent(event));\n\t}\n\n\t/**\n\t * Checks if the given event should be proxied.\n\t * @param {string} event\n\t * @return {boolean}\n\t * @protected\n\t */\n\tshouldProxyEvent_(event) {\n\t\tif (this.whitelist_ && !this.whitelist_[event]) {\n\t\t\treturn false;\n\t\t}\n\t\tif (this.blacklist_[event]) {\n\t\t\treturn false;\n\t\t}\n\t\treturn !this.proxiedEvents_[event];\n\t}\n\n\t/**\n\t * Starts proxying all events from the origin to the target emitter.\n\t * @protected\n\t */\n\tstartProxy_() {\n\t\tthis.targetEmitter_.on('newListener', this.proxyEvent.bind(this));\n\t}\n\n\t/**\n\t * Adds a listener to the origin emitter, if it exists. Otherwise, stores\n\t * the pending listener so it can be used on a future origin emitter.\n\t * @param {string} event\n\t * @protected\n\t */\n\ttryToAddListener_(event) {\n\t\tif (this.originEmitter_) {\n\t\t\tthis.proxiedEvents_[event] = this.addListenerForEvent_(event);\n\t\t} else {\n\t\t\tthis.pendingEvents_.push(event);\n\t\t}\n\t}\n}\n\nexport default EventEmitterProxy;\n","'use strict';\n\nimport { Disposable } from 'metal';\n\n/**\n * EventHandler utility. It's useful for easily removing a group of\n * listeners from different EventEmitter instances.\n * @constructor\n * @extends {Disposable}\n */\nclass EventHandler extends Disposable {\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * An array that holds the added event handles, so the listeners can be\n\t\t * removed later.\n\t\t * @type {Array.<EventHandle>}\n\t\t * @protected\n\t\t */\n\t\tthis.eventHandles_ = [];\n\t}\n\n\t/**\n\t * Adds event handles to be removed later through the `removeAllListeners`\n\t * method.\n\t * @param {...(!EventHandle)} var_args\n\t */\n\tadd() {\n\t\tfor (var i = 0; i < arguments.length; i++) {\n\t\t\tthis.eventHandles_.push(arguments[i]);\n\t\t}\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.eventHandles_ = null;\n\t}\n\n\t/**\n\t * Removes all listeners that have been added through the `add` method.\n\t */\n\tremoveAllListeners() {\n\t\tfor (var i = 0; i < this.eventHandles_.length; i++) {\n\t\t\tthis.eventHandles_[i].removeListener();\n\t\t}\n\n\t\tthis.eventHandles_ = [];\n\t}\n}\n\nexport default EventHandler;\n","'use strict';\n\nimport { registerCustomEvent } from './dom';\nimport features from './features';\n\nvar mouseEventMap = {\n\tmouseenter: 'mouseover',\n\tmouseleave: 'mouseout',\n\tpointerenter: 'pointerover',\n\tpointerleave: 'pointerout'\n};\nObject.keys(mouseEventMap).forEach(function(eventName) {\n\tregisterCustomEvent(eventName, {\n\t\tdelegate: true,\n\t\thandler: function(callback, event) {\n\t\t\tvar related = event.relatedTarget;\n\t\t\tvar target = event.delegateTarget;\n\t\t\tif (!related || (related !== target && !target.contains(related))) {\n\t\t\t\tevent.customType = eventName;\n\t\t\t\treturn callback(event);\n\t\t\t}\n\t\t},\n\t\toriginalEvent: mouseEventMap[eventName]\n\t});\n});\n\nvar animationEventMap = {\n\tanimation: 'animationend',\n\ttransition: 'transitionend'\n};\nObject.keys(animationEventMap).forEach(function(eventType) {\n\tvar eventName = animationEventMap[eventType];\n\tregisterCustomEvent(eventName, {\n\t\tevent: true,\n\t\tdelegate: true,\n\t\thandler: function(callback, event) {\n\t\t\tevent.customType = eventName;\n\t\t\treturn callback(event);\n\t\t},\n\t\toriginalEvent: features.checkAnimationEventName()[eventType]\n\t});\n});\n","'use strict';\n\nimport { array, isString } from 'metal';\nimport domData from './domData';\nimport { EventHandle } from 'metal-events';\n\n/**\n * This is a special EventHandle, that is responsible for dom delegated events\n * (only the ones that receive a target element, not a selector string).\n * @extends {EventHandle}\n */\nclass DomDelegatedEventHandle extends EventHandle {\n\t/**\n\t * The constructor for `DomDelegatedEventHandle`.\n\t * @param {!Event} emitter Element the event was subscribed to.\n\t * @param {string} event The name of the event that was subscribed to.\n\t * @param {!Function} listener The listener subscribed to the event.\n\t * @param {string=} opt_selector An optional selector used when delegating\n\t * the event.\n\t * @constructor\n\t */\n\tconstructor(emitter, event, listener, opt_selector) {\n\t\tsuper(emitter, event, listener);\n\t\tthis.selector_ = opt_selector;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveListener() {\n\t\tvar data = domData.get(this.emitter_);\n\t\tvar selector = this.selector_;\n\t\tvar arr = isString(selector) ? data.delegating[this.event_].selectors : data.listeners;\n\t\tvar key = isString(selector) ? selector : this.event_;\n\n\t\tarray.remove(arr[key] || [], this.listener_);\n\t\tif (arr[key] && arr[key].length === 0) {\n\t\t\tdelete arr[key];\n\t\t}\n\t}\n}\n\nexport default DomDelegatedEventHandle;\n","'use strict';\n\nimport { EventHandle } from 'metal-events';\n\n/**\n * This is a special EventHandle, that is responsible for dom events, instead\n * of EventEmitter events.\n * @extends {EventHandle}\n */\nclass DomEventHandle extends EventHandle {\n\t/**\n\t * The constructor for `DomEventHandle`.\n\t * @param {!EventEmitter} emitter Emitter the event was subscribed to.\n\t * @param {string} event The name of the event that was subscribed to.\n\t * @param {!Function} listener The listener subscribed to the event.\n\t * @param {boolean} opt_capture Flag indicating if listener should be triggered\n\t * during capture phase, instead of during the bubbling phase. Defaults to false.\n\t * @constructor\n\t */\n\tconstructor(emitter, event, listener, opt_capture) {\n\t\tsuper(emitter, event, listener);\n\t\tthis.capture_ = opt_capture;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tremoveListener() {\n\t\tthis.emitter_.removeEventListener(this.event_, this.listener_, this.capture_);\n\t}\n}\n\nexport default DomEventHandle;\n","'use strict';\n\nimport { isDef, isDocument, isElement, isObject, isString, object } from 'metal';\nimport domData from './domData';\nimport DomDelegatedEventHandle from './DomDelegatedEventHandle';\nimport DomEventHandle from './DomEventHandle';\n\nconst elementsByTag_ = {};\nexport const customEvents = {};\n\nconst NEXT_TARGET = '__metal_next_target__';\nconst USE_CAPTURE = {\n\tblur: true,\n\terror: true,\n\tfocus: true,\n\tinvalid: true,\n\tload: true,\n\tscroll: true\n};\n\n/**\n * Adds the requested CSS classes to an element.\n * @param {!Element|!Nodelist} elements The element or elements to add CSS classes to.\n * @param {string} classes CSS classes to add.\n */\nexport function addClasses(elements, classes) {\n\tif (!isObject(elements) || !isString(classes)) {\n\t\treturn;\n\t}\n\n\tif (!elements.length) {\n\t\telements = [elements];\n\t}\n\n\tfor (let i = 0; i < elements.length; i++) {\n\t\tif ('classList' in elements[i]) {\n\t\t\taddClassesWithNative_(elements[i], classes);\n\t\t} else {\n\t\t\taddClassesWithoutNative_(elements[i], classes);\n\t\t}\n\t}\n}\n\n/**\n * Adds the requested CSS classes to an element using classList.\n * @param {!Element} element The element to add CSS classes to.\n * @param {string} classes CSS classes to add.\n * @private\n */\nfunction addClassesWithNative_(element, classes) {\n\tclasses.split(' ').forEach(function(className) {\n\t\tif (className) {\n\t\t\telement.classList.add(className);\n\t\t}\n\t});\n}\n\n/**\n * Adds the requested CSS classes to an element without using classList.\n * @param {!Element} element The element to add CSS classes to.\n * @param {string} classes CSS classes to add.\n * @private\n */\nfunction addClassesWithoutNative_(element, classes) {\n\tvar elementClassName = ' ' + element.className + ' ';\n\tvar classesToAppend = '';\n\n\tclasses = classes.split(' ');\n\n\tfor (var i = 0; i < classes.length; i++) {\n\t\tvar className = classes[i];\n\n\t\tif (elementClassName.indexOf(' ' + className + ' ') === -1) {\n\t\t\tclassesToAppend += ' ' + className;\n\t\t}\n\t}\n\n\tif (classesToAppend) {\n\t\telement.className = element.className + classesToAppend;\n\t}\n}\n\n/**\n * Adds an event listener to the given element, to be triggered via delegate.\n * @param {!Element} element\n * @param {string} eventName\n * @param {!function()} listener\n * @private\n */\nfunction addElementListener_(element, eventName, listener) {\n\tvar data = domData.get(element);\n\taddToArr_(data.listeners, eventName, listener);\n}\n\n/**\n * Adds an event listener to the given element, to be triggered via delegate\n * selectors.\n * @param {!Element} element\n * @param {string} eventName\n * @param {string} selector\n * @param {!function()} listener\n * @private\n */\nfunction addSelectorListener_(element, eventName, selector, listener) {\n\tvar data = domData.get(element);\n\taddToArr_(data.delegating[eventName].selectors, selector, listener);\n}\n\n/**\n * Adds a value to an array inside an object, creating it first if it doesn't\n * yet exist.\n * @param {!Array} arr\n * @param {string} key\n * @param {*} value\n * @private\n */\nfunction addToArr_(arr, key, value) {\n\tif (!arr[key]) {\n\t\tarr[key] = [];\n\t}\n\tarr[key].push(value);\n}\n\n/**\n * Attaches a delegate listener, unless there's already one attached.\n * @param {!Element} element\n * @param {string} eventName\n * @private\n */\nfunction attachDelegateEvent_(element, eventName) {\n\tvar data = domData.get(element);\n\tif (!data.delegating[eventName]) {\n\t\tdata.delegating[eventName] = {\n\t\t\thandle: on(\n\t\t\t\telement,\n\t\t\t\teventName,\n\t\t\t\thandleDelegateEvent_,\n\t\t\t\t!!USE_CAPTURE[eventName]\n\t\t\t),\n\t\t\tselectors: {}\n\t\t};\n\t}\n}\n\n/**\n * Gets the closest element up the tree from the given element (including\n * itself) that matches the specified selector, or null if none match.\n * @param {Element} element\n * @param {string} selector\n * @return {Element}\n */\nexport function closest(element, selector) {\n\twhile (element && !match(element, selector)) {\n\t\telement = element.parentNode;\n\t}\n\treturn element;\n}\n\n/**\n * Appends a child node with text or other nodes to a parent node. If\n * child is a HTML string it will be automatically converted to a document\n * fragment before appending it to the parent.\n * @param {!Element} parent The node to append nodes to.\n * @param {!(Element|NodeList|string)} child The thing to append to the parent.\n * @return {!Element} The appended child.\n */\nexport function append(parent, child) {\n\tif (isString(child)) {\n\t\tchild = buildFragment(child);\n\t}\n\tif (child instanceof NodeList) {\n\t\tvar childArr = Array.prototype.slice.call(child);\n\t\tfor (var i = 0; i < childArr.length; i++) {\n\t\t\tparent.appendChild(childArr[i]);\n\t\t}\n\t} else {\n\t\tparent.appendChild(child);\n\t}\n\treturn child;\n}\n\n/**\n * Helper for converting a HTML string into a document fragment.\n * @param {string} htmlString The HTML string to convert.\n * @return {!Element} The resulting document fragment.\n */\nexport function buildFragment(htmlString) {\n\tvar tempDiv = document.createElement('div');\n\ttempDiv.innerHTML = '<br>' + htmlString;\n\ttempDiv.removeChild(tempDiv.firstChild);\n\n\tvar fragment = document.createDocumentFragment();\n\twhile (tempDiv.firstChild) {\n\t\tfragment.appendChild(tempDiv.firstChild);\n\t}\n\treturn fragment;\n}\n\n/**\n * Checks if the first element contains the second one.\n * @param {!Element} element1\n * @param {!Element} element2\n * @return {boolean}\n */\nexport function contains(element1, element2) {\n\tif (isDocument(element1)) {\n\t\t// document.contains is not defined on IE9, so call it on documentElement instead.\n\t\treturn element1.documentElement.contains(element2);\n\t} else {\n\t\treturn element1.contains(element2);\n\t}\n}\n\n/**\n * Listens to the specified event on the given DOM element, but only calls the\n * given callback listener when it's triggered by elements that match the\n * given selector or target element.\n * @param {!Element} element The DOM element the event should be listened on.\n * @param {string} eventName The name of the event to listen to.\n * @param {!Element|string} selectorOrTarget Either an element or css selector\n * that should match the event for the listener to be triggered.\n * @param {!function(!Object)} callback Function to be called when the event\n * is triggered. It will receive the normalized event object.\n * @param {boolean=} opt_default Optional flag indicating if this is a default\n * listener. That means that it would only be executed after all non\n * default listeners, and only if the event isn't prevented via\n * `preventDefault`.\n * @return {!EventHandle} Can be used to remove the listener.\n */\nexport function delegate(element, eventName, selectorOrTarget, callback, opt_default) {\n\tvar customConfig = customEvents[eventName];\n\tif (customConfig && customConfig.delegate) {\n\t\teventName = customConfig.originalEvent;\n\t\tcallback = customConfig.handler.bind(customConfig, callback);\n\t}\n\n\tif (opt_default) {\n\t\t// Wrap callback so we don't set property directly on it.\n\t\tcallback = callback.bind();\n\t\tcallback.defaultListener_ = true;\n\t}\n\n\tattachDelegateEvent_(element, eventName);\n\tif (isString(selectorOrTarget)) {\n\t\taddSelectorListener_(element, eventName, selectorOrTarget, callback);\n\t} else {\n\t\taddElementListener_(selectorOrTarget, eventName, callback);\n\t}\n\n\treturn new DomDelegatedEventHandle(\n\t\tisString(selectorOrTarget) ? element : selectorOrTarget,\n\t\teventName,\n\t\tcallback,\n\t\tisString(selectorOrTarget) ? selectorOrTarget : null\n\t);\n}\n\n/**\n * Verifies if the element is able to trigger the Click event,\n * simulating browsers behaviour, avoiding event listeners to be called by triggerEvent method.\n * @param {Element} node Element to be checked.\n * @param {string} eventName The event name.\n * @private\n */\nfunction isAbleToInteractWith_(node, eventName, opt_eventObj) {\n\tif (opt_eventObj && eventName === 'click' && opt_eventObj.button === 2) {\n\t\t// Firefox triggers \"click\" events on the document for right clicks. This\n\t\t// causes our delegate logic to trigger it for regular elements too, which\n\t\t// shouldn't happen. Ignoring them here.\n\t\treturn false;\n\t}\n\n var matchesSelector = ['BUTTON', 'INPUT', 'SELECT', 'TEXTAREA', 'FIELDSET'];\n if (eventName === 'click' && matchesSelector.indexOf(node.tagName) > -1) {\n return !(node.disabled || parent(node, 'fieldset[disabled]'));\n }\n return true;\n}\n\n/**\n * Inserts node in document as last element.\n * @param {Element} node Element to remove children from.\n */\nexport function enterDocument(node) {\n\tnode && append(document.body, node);\n}\n\n/**\n * Removes node from document.\n * @param {Element} node Element to remove children from.\n */\nexport function exitDocument(node) {\n\tif (node && node.parentNode) {\n\t\tnode.parentNode.removeChild(node);\n\t}\n}\n\n/**\n * This is called when an event is triggered by a delegate listener. All\n * matching listeners of this event type from `target` to `currentTarget` will\n * be triggered.\n * @param {!Event} event The event payload.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction handleDelegateEvent_(event) {\n\tnormalizeDelegateEvent_(event);\n\tvar currElement = isDef(event[NEXT_TARGET]) ?\n\t\tevent[NEXT_TARGET] :\n\t\tevent.target;\n\tvar ret = true;\n\tvar container = event.currentTarget;\n\tvar limit = event.currentTarget.parentNode;\n\tvar defFns = [];\n\n\tret &= triggerDelegatedListeners_(container, currElement, event, limit, defFns);\n\tret &= triggerDefaultDelegatedListeners_(defFns, event);\n\n\tevent.delegateTarget = null;\n\tevent[NEXT_TARGET] = limit;\n\treturn ret;\n}\n\n/**\n * Checks if the given element has the requested css class.\n * @param {!Element} element\n * @param {string} className\n * @return {boolean}\n */\nexport function hasClass(element, className) {\n\tif ('classList' in element) {\n\t\treturn hasClassWithNative_(element, className);\n\t} else {\n\t\treturn hasClassWithoutNative_(element, className);\n\t}\n}\n\n/**\n * Checks if the given element has the requested css class using classList.\n * @param {!Element} element\n * @param {string} className\n * @return {boolean}\n * @private\n */\nfunction hasClassWithNative_(element, className) {\n\treturn element.classList.contains(className);\n}\n\n/**\n * Checks if the given element has the requested css class without using classList.\n * @param {!Element} element\n * @param {string} className\n * @return {boolean}\n * @private\n */\nfunction hasClassWithoutNative_(element, className) {\n\treturn (' ' + element.className + ' ').indexOf(' ' + className + ' ') >= 0;\n}\n\n/**\n * Checks if the given element is empty or not.\n * @param {!Element} element\n * @return {boolean}\n */\nexport function isEmpty(element) {\n\treturn element.childNodes.length === 0;\n}\n\n/**\n * Check if an element matches a given selector.\n * @param {Element} element\n * @param {string} selector\n * @return {boolean}\n */\nexport function match(element, selector) {\n\tif (!element || element.nodeType !== 1) {\n\t\treturn false;\n\t}\n\n\tvar p = Element.prototype;\n\tvar m = p.matches || p.webkitMatchesSelector || p.mozMatchesSelector || p.msMatchesSelector || p.oMatchesSelector;\n\tif (m) {\n\t\treturn m.call(element, selector);\n\t}\n\n\treturn matchFallback_(element, selector);\n}\n\n/**\n * Check if an element matches a given selector, using an internal implementation\n * instead of calling existing javascript functions.\n * @param {Element} element\n * @param {string} selector\n * @return {boolean}\n * @private\n */\nfunction matchFallback_(element, selector) {\n\tvar nodes = document.querySelectorAll(selector, element.parentNode);\n\tfor (var i = 0; i < nodes.length; ++i) {\n\t\tif (nodes[i] === element) {\n\t\t\treturn true;\n\t\t}\n\t}\n\treturn false;\n}\n\n/**\n * Returns the next sibling of the given element that matches the specified\n * selector, or null if there is none.\n * @param {!Element} element\n * @param {?string} selector\n */\nexport function next(element, selector) {\n\tdo {\n\t\telement = element.nextSibling;\n\t\tif (element && match(element, selector)) {\n\t\t\treturn element;\n\t\t}\n\t} while (element);\n\treturn null;\n}\n\n/**\n * Normalizes the event payload for delegate listeners.\n * @param {!Event} event\n * @private\n */\nfunction normalizeDelegateEvent_(event) {\n\tevent.stopPropagation = stopPropagation_;\n\tevent.stopImmediatePropagation = stopImmediatePropagation_;\n}\n\n/**\n * Listens to the specified event on the given DOM element. This function normalizes\n * DOM event payloads and functions so they'll work the same way on all supported\n * browsers.\n * @param {!Element|string} element The DOM element to listen to the event on, or\n * a selector that should be delegated on the entire document.\n * @param {string} eventName The name of the event to listen to.\n * @param {!function(!Object)} callback Function to be called when the event is\n * triggered. It will receive the normalized event object.\n * @param {boolean} opt_capture Flag indicating if listener should be triggered\n * during capture phase, instead of during the bubbling phase. Defaults to false.\n * @return {!DomEventHandle} Can be used to remove the listener.\n */\nexport function on(element, eventName, callback, opt_capture) {\n\tif (isString(element)) {\n\t\treturn delegate(document, eventName, element, callback);\n\t}\n\tvar customConfig = customEvents[eventName];\n\tif (customConfig && customConfig.event) {\n\t\teventName = customConfig.originalEvent;\n\t\tcallback = customConfig.handler.bind(customConfig, callback);\n\t}\n\telement.addEventListener(eventName, callback, opt_capture);\n\treturn new DomEventHandle(element, eventName, callback, opt_capture);\n}\n\n/**\n * Listens to the specified event on the given DOM element once. This\n * function normalizes DOM event payloads and functions so they'll work the\n * same way on all supported browsers.\n * @param {!Element} element The DOM element to listen to the event on.\n * @param {string} eventName The name of the event to listen to.\n * @param {!function(!Object)} callback Function to be called when the event\n * is triggered. It will receive the normalized event object.\n * @return {!DomEventHandle} Can be used to remove the listener.\n */\nexport function once(element, eventName, callback) {\n\tvar domEventHandle = on(element, eventName, function() {\n\t\tdomEventHandle.removeListener();\n\t\treturn callback.apply(this, arguments);\n\t});\n\treturn domEventHandle;\n}\n\n/**\n * Gets the first parent from the given element that matches the specified\n * selector, or null if none match.\n * @param {!Element} element\n * @param {string} selector\n * @return {Element}\n */\nexport function parent(element, selector) {\n\treturn closest(element.parentNode, selector);\n}\n\n/**\n * Registers a custom event.\n * @param {string} eventName The name of the custom event.\n * @param {!Object} customConfig An object with information about how the event\n * should be handled.\n */\nexport function registerCustomEvent(eventName, customConfig) {\n\tcustomEvents[eventName] = customConfig;\n}\n\n/**\n * Removes all the child nodes on a DOM node.\n * @param {Element} node Element to remove children from.\n */\nexport function removeChildren(node) {\n\tvar child;\n\twhile ((child = node.firstChild)) {\n\t\tnode.removeChild(child);\n\t}\n}\n\n/**\n * Removes the requested CSS classes from an element.\n * @param {!Element|!NodeList} elements The element or elements to remove CSS classes from.\n * @param {string} classes CSS classes to remove.\n */\nexport function removeClasses(elements, classes) {\n\tif (!isObject(elements) || !isString(classes)) {\n\t\treturn;\n\t}\n\n\tif (!elements.length) {\n\t\telements = [elements];\n\t}\n\n\tfor (let i = 0; i < elements.length; i++) {\n\t\tif ('classList' in elements[i]) {\n\t\t\tremoveClassesWithNative_(elements[i], classes);\n\t\t} else {\n\t\t\tremoveClassesWithoutNative_(elements[i], classes);\n\t\t}\n\t}\n}\n\n/**\n * Removes the requested CSS classes from an element using classList.\n * @param {!Element} element The element to remove CSS classes from.\n * @param {string} classes CSS classes to remove.\n * @private\n */\nfunction removeClassesWithNative_(element, classes) {\n\tclasses.split(' ').forEach(function(className) {\n\t\tif (className) {\n\t\t\telement.classList.remove(className);\n\t\t}\n\t});\n}\n\n/**\n * Removes the requested CSS classes from an element without using classList.\n * @param {!Element} element The element to remove CSS classes from.\n * @param {string} classes CSS classes to remove.\n * @private\n */\nfunction removeClassesWithoutNative_(element, classes) {\n\tvar elementClassName = ' ' + element.className + ' ';\n\n\tclasses = classes.split(' ');\n\n\tfor (var i = 0; i < classes.length; i++) {\n\t\telementClassName = elementClassName.replace(' ' + classes[i] + ' ', ' ');\n\t}\n\n\telement.className = elementClassName.trim();\n}\n\n/**\n * Replaces the first element with the second.\n * @param {Element} element1\n * @param {Element} element2\n */\nexport function replace(element1, element2) {\n\tif (element1 && element2 && element1 !== element2 && element1.parentNode) {\n\t\telement1.parentNode.insertBefore(element2, element1);\n\t\telement1.parentNode.removeChild(element1);\n\t}\n}\n\n/**\n * The function that replaces `stopImmediatePropagation_` for events.\n * @private\n */\nfunction stopImmediatePropagation_() {\n\tconst event = this; // jshint ignore:line\n\tevent.stopped = true;\n\tevent.stoppedImmediate = true;\n\tEvent.prototype.stopImmediatePropagation.call(event);\n}\n\n/**\n * The function that replaces `stopPropagation` for events.\n * @private\n */\nfunction stopPropagation_() {\n\tconst event = this; // jshint ignore:line\n\tevent.stopped = true;\n\tEvent.prototype.stopPropagation.call(event);\n}\n\n/**\n * Checks if the given element supports the given event type.\n * @param {!Element|string} element The DOM element or element tag name to check.\n * @param {string} eventName The name of the event to check.\n * @return {boolean}\n */\nexport function supportsEvent(element, eventName) {\n\tif (customEvents[eventName]) {\n\t\treturn true;\n\t}\n\n\tif (isString(element)) {\n\t\tif (!elementsByTag_[element]) {\n\t\t\telementsByTag_[element] = document.createElement(element);\n\t\t}\n\t\telement = elementsByTag_[element];\n\t}\n\treturn 'on' + eventName in element;\n}\n\n/**\n * This triggers all default matched delegated listeners of a given event type.\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * @param {!Event} event\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerDefaultDelegatedListeners_(defFns, event) {\n\tlet ret = true;\n\n\tfor (var i = 0; i < defFns.length && !event.defaultPrevented; i++) {\n\t\tevent.delegateTarget = defFns[i].element;\n\t\tret &= defFns[i].fn(event);\n\t}\n\n\treturn ret;\n}\n\n/**\n * This triggers all matched delegated listeners of a given event type when its\n * delegated target is able to interact.\n * @param {!Element} container\n * @param {!Element} currElement\n * @param {!Event} event\n * @param {!Element} limit the fartest parent of the given element\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * of running them.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerDelegatedListeners_(container, currElement, event, limit, defaultFns) {\n\tlet ret = true;\n\n\twhile (currElement && currElement !== limit && !event.stopped) {\n\t\tif (isAbleToInteractWith_(currElement, event.type, event)) {\n\t\t\tevent.delegateTarget = currElement;\n\t\t\tret &= triggerMatchedListeners_(container, currElement, event, defaultFns);\n\t\t}\n\t\tcurrElement = currElement.parentNode;\n\t}\n\n\treturn ret;\n}\n\n/**\n * Converts the given argument to a DOM element. Strings are assumed to\n * be selectors, and so a matched element will be returned. If the arg\n * is already a DOM element it will be the return value.\n * @param {string|Element|Document} selectorOrElement\n * @return {Element} The converted element, or null if none was found.\n */\nexport function toElement(selectorOrElement) {\n\tif (isElement(selectorOrElement) || isDocument(selectorOrElement)) {\n\t\treturn selectorOrElement;\n\t} else if (isString(selectorOrElement)) {\n\t\tif (selectorOrElement[0] === '#' && selectorOrElement.indexOf(' ') === -1) {\n\t\t\treturn document.getElementById(selectorOrElement.substr(1));\n\t\t} else {\n\t\t\treturn document.querySelector(selectorOrElement);\n\t\t}\n\t} else {\n\t\treturn null;\n\t}\n}\n\n/**\n * Adds or removes one or more classes from an element. If any of the classes\n * is present, it will be removed from the element, or added otherwise.\n * @param {!Element} element The element which classes will be toggled.\n * @param {string} classes The classes which have to added or removed from the element.\n */\nexport function toggleClasses(element, classes) {\n\tif (!isObject(element) || !isString(classes)) {\n\t\treturn;\n\t}\n\n\tif ('classList' in element) {\n\t\ttoggleClassesWithNative_(element, classes);\n\t} else {\n\t\ttoggleClassesWithoutNative_(element, classes);\n\t}\n}\n\n/**\n * Adds or removes one or more classes from an element using classList.\n * If any of the classes is present, it will be removed from the element,\n * or added otherwise.\n * @param {!Element} element The element which classes will be toggled.\n * @param {string} classes The classes which have to added or removed from the element.\n * @private\n */\nfunction toggleClassesWithNative_(element, classes) {\n\tclasses.split(' ').forEach(function(className) {\n\t\telement.classList.toggle(className);\n\t});\n}\n\n/**\n * Adds or removes one or more classes from an element without using classList.\n * If any of the classes is present, it will be removed from the element,\n * or added otherwise.\n * @param {!Element} element The element which classes will be toggled.\n * @param {string} classes The classes which have to added or removed from the element.\n * @private\n */\nfunction toggleClassesWithoutNative_(element, classes) {\n\tvar elementClassName = ' ' + element.className + ' ';\n\n\tclasses = classes.split(' ');\n\n\tfor (var i = 0; i < classes.length; i++) {\n\t\tvar className = ' ' + classes[i] + ' ';\n\t\tvar classIndex = elementClassName.indexOf(className);\n\n\t\tif (classIndex === -1) {\n\t\t\telementClassName = elementClassName + classes[i] + ' ';\n\t\t} else {\n\t\t\telementClassName = elementClassName.substring(0, classIndex) + ' ' +\n\t\t\t\telementClassName.substring(classIndex + className.length);\n\t\t}\n\t}\n\n\telement.className = elementClassName.trim();\n}\n\n/**\n * Triggers the specified event on the given element.\n * NOTE: This should mostly be used for testing, not on real code.\n * @param {!Element} element The node that should trigger the event.\n * @param {string} eventName The name of the event to be triggred.\n * @param {Object=} opt_eventObj An object with data that should be on the\n * triggered event's payload.\n */\nexport function triggerEvent(element, eventName, opt_eventObj) {\n\tif (isAbleToInteractWith_(element, eventName, opt_eventObj)) {\n\t\tvar eventObj = document.createEvent('HTMLEvents');\n\t\teventObj.initEvent(eventName, true, true);\n\t\tobject.mixin(eventObj, opt_eventObj);\n\t\telement.dispatchEvent(eventObj);\n\t}\n}\n\n/**\n * Triggers the given listeners array.\n * @param {Array<!function()>} listeners\n * @param {!Event} event\n * @param {!Element} element\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * of running them.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerListeners_(listeners, event, element, defaultFns) {\n\tvar ret = true;\n\tlisteners = listeners || [];\n\tfor (var i = 0; i < listeners.length && !event.stoppedImmediate; i++) {\n\t\tif (listeners[i].defaultListener_) {\n\t\t\tdefaultFns.push({\n\t\t\t\telement,\n\t\t\t\tfn: listeners[i]\n\t\t\t});\n\t\t} else {\n\t\t\tret &= listeners[i](event);\n\t\t}\n\t}\n\treturn ret;\n}\n\n/**\n * Triggers all listeners for the given event type that are stored in the\n * specified element.\n * @param {!Element} container\n * @param {!Element} element\n * @param {!Event} event\n * @param {!Array} defaultFns Array to collect default listeners in, instead\n * of running them.\n * @return {boolean} False if at least one of the triggered callbacks returns\n * false, or true otherwise.\n * @private\n */\nfunction triggerMatchedListeners_(container, element, event, defaultFns) {\n\tvar data = domData.get(element);\n\tvar listeners = data.listeners[event.type];\n\tvar ret = triggerListeners_(listeners, event, element, defaultFns);\n\n\tvar selectorsMap = domData.get(container).delegating[event.type].selectors;\n\tvar selectors = Object.keys(selectorsMap);\n\tfor (var i = 0; i < selectors.length && !event.stoppedImmediate; i++) {\n\t\tif (match(element, selectors[i])) {\n\t\t\tlisteners = selectorsMap[selectors[i]];\n\t\t\tret &= triggerListeners_(listeners, event, element, defaultFns);\n\t\t}\n\t}\n\n\treturn ret;\n}\n","'use strict';\n\nimport dom from '../dom';\nimport domData from '../domData';\nimport DomEventEmitterProxy from '../DomEventEmitterProxy';\nimport DomEventHandle from '../DomEventHandle';\nimport features from '../features';\nimport globalEval from '../globalEval';\nimport globalEvalStyles from '../globalEvalStyles';\nimport '../events';\n\nexport * from '../dom';\nexport { domData, DomEventEmitterProxy, DomEventHandle, features, globalEval, globalEvalStyles };\nexport default dom;\n","'use strict';\n\nimport { delegate, on, supportsEvent } from './dom';\nimport { EventEmitterProxy } from 'metal-events';\n\n/**\n * DomEventEmitterProxy utility. It extends `EventEmitterProxy` to also accept\n * dom elements as origin emitters.\n * @extends {EventEmitterProxy}\n */\nclass DomEventEmitterProxy extends EventEmitterProxy {\n\t/**\n\t * Adds the given listener for the given event.\n\t * @param {string} event\n\t * @param {!function()} listener\n\t * @return {!EventHandle} The listened event's handle.\n\t * @protected\n\t * @override\n\t */\n\taddListener_(event, listener) {\n\t\tif (this.originEmitter_.addEventListener) {\n\t\t\tif (this.isDelegateEvent_(event)) {\n\t\t\t\tvar index = event.indexOf(':', 9);\n\t\t\t\tvar eventName = event.substring(9, index);\n\t\t\t\tvar selector = event.substring(index + 1);\n\t\t\t\treturn delegate(this.originEmitter_, eventName, selector, listener);\n\t\t\t} else {\n\t\t\t\treturn on(this.originEmitter_, event, listener);\n\t\t\t}\n\t\t} else {\n\t\t\treturn super.addListener_(event, listener);\n\t\t}\n\t}\n\n\t/**\n\t * Checks if the given event is of the delegate type.\n\t * @param {string} event\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisDelegateEvent_(event) {\n\t\treturn event.substr(0, 9) === 'delegate:';\n\t}\n\n\t/**\n\t * Checks if the given event is supported by the origin element.\n\t * @param {string} event\n\t * @protected\n\t */\n\tisSupportedDomEvent_(event) {\n\t\tif (!this.originEmitter_ || !this.originEmitter_.addEventListener) {\n\t\t\treturn true;\n\t\t}\n\t\treturn (this.isDelegateEvent_(event) && event.indexOf(':', 9) !== -1) ||\n\t\t\tsupportsEvent(this.originEmitter_, event);\n\t}\n\n\t/**\n\t * Checks if the given event should be proxied.\n\t * @param {string} event\n\t * @return {boolean}\n\t * @protected\n\t * @override\n\t */\n\tshouldProxyEvent_(event) {\n\t\treturn super.shouldProxyEvent_(event) && this.isSupportedDomEvent_(event);\n\t}\n}\n\nexport default DomEventEmitterProxy;\n","'use strict';\n\nimport { append } from './dom';\nimport { string } from 'metal';\n\n/**\n * Class with static methods responsible for doing browser feature checks.\n */\nclass features {\n\t/**\n\t * Some browsers still supports prefixed animation events. This method can\n\t * be used to retrieve the current browser event name for both, animation\n\t * and transition.\n\t * @return {object}\n\t */\n\tstatic checkAnimationEventName() {\n\t\tif (features.animationEventName_ === undefined) {\n\t\t\tfeatures.animationEventName_ = {\n\t\t\t\tanimation: features.checkAnimationEventName_('animation'),\n\t\t\t\ttransition: features.checkAnimationEventName_('transition')\n\t\t\t};\n\t\t}\n\t\treturn features.animationEventName_;\n\t}\n\n\t/**\n\t * @protected\n\t * @param {string} type Type to test: animation, transition.\n\t * @return {string} Browser event name.\n\t */\n\tstatic checkAnimationEventName_(type) {\n\t\tvar prefixes = ['Webkit', 'MS', 'O', ''];\n\t\tvar typeTitleCase = string.replaceInterval(type, 0, 1, type.substring(0, 1).toUpperCase());\n\t\tvar suffixes = [typeTitleCase + 'End', typeTitleCase + 'End', typeTitleCase + 'End', type + 'end'];\n\t\tfor (var i = 0; i < prefixes.length; i++) {\n\t\t\tif (features.animationElement_.style[prefixes[i] + typeTitleCase] !== undefined) {\n\t\t\t\treturn prefixes[i].toLowerCase() + suffixes[i];\n\t\t\t}\n\t\t}\n\t\treturn type + 'end';\n\t}\n\n\t/**\n\t * Some browsers (like IE9) change the order of element attributes, when html\n\t * is rendered. This method can be used to check if this behavior happens on\n\t * the current browser.\n\t * @return {boolean}\n\t */\n\tstatic checkAttrOrderChange() {\n\t\tif (features.attrOrderChange_ === undefined) {\n\t\t\tvar originalContent = '<div data-component=\"\" data-ref=\"\"></div>';\n\t\t\tvar element = document.createElement('div');\n\t\t\tappend(element, originalContent);\n\t\t\tfeatures.attrOrderChange_ = originalContent !== element.innerHTML;\n\t\t}\n\t\treturn features.attrOrderChange_;\n\t}\n}\n\nfeatures.animationElement_ = document.createElement('div');\nfeatures.animationEventName_ = undefined;\nfeatures.attrOrderChange_ = undefined;\n\nexport default features;\n","'use strict';\n\nimport { async } from 'metal';\nimport { exitDocument, once } from './dom';\n\n/**\n * Utility functions for running javascript code in the global scope.\n */\nclass globalEval {\n\t/**\n\t * Evaluates the given string in the global scope.\n\t * @param {string} text\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} script\n\t */\n\tstatic run(text, opt_appendFn) {\n\t\tvar script = document.createElement('script');\n\t\tscript.text = text;\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(script);\n\t\t} else {\n\t\t\tdocument.head.appendChild(script);\n\t\t}\n\t\texitDocument(script);\n\t\treturn script;\n\t}\n\n\t/**\n\t * Evaluates the given javascript file in the global scope.\n\t * @param {string} src The file's path.\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} script\n\t */\n\tstatic runFile(src, opt_callback, opt_appendFn) {\n\t\tvar script = document.createElement('script');\n\t\tscript.src = src;\n\n\t\tvar callback = function() {\n\t\t\texitDocument(script);\n\t\t\topt_callback && opt_callback();\n\t\t};\n\t\tonce(script, 'load', callback);\n\t\tonce(script, 'error', callback);\n\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(script);\n\t\t} else {\n\t\t\tdocument.head.appendChild(script);\n\t\t}\n\n\t\treturn script;\n\t}\n\n\t/**\n\t * Evaluates the code referenced by the given script element.\n\t * @param {!Element} script\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} script\n\t */\n\tstatic runScript(script, opt_callback, opt_appendFn) {\n\t\tvar callback = function() {\n\t\t\topt_callback && opt_callback();\n\t\t};\n\t\tif (script.type && script.type !== 'text/javascript') {\n\t\t\tasync.nextTick(callback);\n\t\t\treturn;\n\t\t}\n\t\texitDocument(script);\n\t\tif (script.src) {\n\t\t\treturn globalEval.runFile(script.src, opt_callback, opt_appendFn);\n\t\t} else {\n\t\t\tasync.nextTick(callback);\n\t\t\treturn globalEval.run(script.text, opt_appendFn);\n\t\t}\n\t}\n\n\t/**\n\t * Evaluates any script tags present in the given element.\n\t * @param {!Element} element\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t */\n\tstatic runScriptsInElement(element, opt_callback, opt_appendFn) {\n\t\tvar scripts = element.querySelectorAll('script');\n\t\tif (scripts.length) {\n\t\t\tglobalEval.runScriptsInOrder(scripts, 0, opt_callback, opt_appendFn);\n\t\t} else if (opt_callback) {\n\t\t\tasync.nextTick(opt_callback);\n\t\t}\n\t}\n\n\t/**\n\t * Runs the given scripts elements in the order that they appear.\n\t * @param {!NodeList} scripts\n\t * @param {number} index\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t */\n\tstatic runScriptsInOrder(scripts, index, opt_callback, opt_appendFn) {\n\t\tglobalEval.runScript(scripts.item(index), function() {\n\t\t\tif (index < scripts.length - 1) {\n\t\t\t\tglobalEval.runScriptsInOrder(scripts, index + 1, opt_callback, opt_appendFn);\n\t\t\t} else if (opt_callback) {\n\t\t\t\tasync.nextTick(opt_callback);\n\t\t\t}\n\t\t}, opt_appendFn);\n\t}\n}\n\nexport default globalEval;\n","'use strict';\n\nimport { async } from 'metal';\nimport { once } from './dom';\n\n/**\n * Utility functions for running styles.\n */\nclass globalEvalStyles {\n\t/**\n\t * Evaluates the given style.\n\t * @param {string} text\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} style\n\t */\n\tstatic run(text, opt_appendFn) {\n\t\tvar style = document.createElement('style');\n\t\tstyle.innerHTML = text;\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(style);\n\t\t} else {\n\t\t\tdocument.head.appendChild(style);\n\t\t}\n\t\treturn style;\n\t}\n\n\t/**\n\t * Evaluates the given style file.\n\t * @param {string} href The file's path.\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the styles has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} style\n\t */\n\tstatic runFile(href, opt_callback, opt_appendFn) {\n\t\tvar link = document.createElement('link');\n\t\tlink.rel = 'stylesheet';\n\t\tlink.href = href;\n\t\tglobalEvalStyles.runStyle(link, opt_callback, opt_appendFn);\n\t\treturn link;\n\t}\n\n\t/**\n\t * Evaluates the code referenced by the given style/link element.\n\t * @param {!Element} style\n\t * @param {function()=} opt_callback Optional function to be called\n\t * when the script has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t * @return {Element} style\n\t */\n\tstatic runStyle(style, opt_callback, opt_appendFn) {\n\t\tvar callback = function() {\n\t\t\topt_callback && opt_callback();\n\t\t};\n\t\tif (style.rel && style.rel !== 'stylesheet') {\n\t\t\tasync.nextTick(callback);\n\t\t\treturn;\n\t\t}\n\n\t\tif (style.tagName === 'STYLE') {\n\t\t\tasync.nextTick(callback);\n\t\t} else {\n\t\t\tonce(style, 'load', callback);\n\t\t\tonce(style, 'error', callback);\n\t\t}\n\n\t\tif (opt_appendFn) {\n\t\t\topt_appendFn(style);\n\t\t} else {\n\t\t\tdocument.head.appendChild(style);\n\t\t}\n\n\t\treturn style;\n\t}\n\n\t/**\n\t * Evaluates any style present in the given element.\n\t * @param {!Element} element\n\t * @param {function()=} opt_callback Optional function to be called when the\n\t * style has been run.\n\t * @param {function()=} opt_appendFn Optional function to append the node\n\t * into document.\n\t */\n\tstatic runStylesInElement(element, opt_callback, opt_appendFn) {\n\t\tvar styles = element.querySelectorAll('style,link');\n\t\tif (styles.length === 0 && opt_callback) {\n\t\t\tasync.nextTick(opt_callback);\n\t\t\treturn;\n\t\t}\n\n\t\tvar loadCount = 0;\n\t\tvar callback = function() {\n\t\t\tif (opt_callback && ++loadCount === styles.length) {\n\t\t\t\tasync.nextTick(opt_callback);\n\t\t\t}\n\t\t};\n\t\tfor (var i = 0; i < styles.length; i++) {\n\t\t\tglobalEvalStyles.runStyle(styles[i], callback, opt_appendFn);\n\t\t}\n\t}\n}\n\nexport default globalEvalStyles;\n","/*!\n * Promises polyfill from Google's Closure Library.\n *\n * Copyright 2013 The Closure Library Authors. All Rights Reserved.\n *\n * NOTE(eduardo): Promise support is not ready on all supported browsers,\n * therefore metal-promise is temporarily using Google's promises as polyfill.\n * It supports cancellable promises and has clean and fast implementation.\n */\n\n'use strict';\n\nimport { isDef, isFunction, isObject } from 'metal';\nimport { async } from 'metal';\n\n/**\n * Provides a more strict interface for Thenables in terms of\n * http://promisesaplus.com for interop with {@see CancellablePromise}.\n *\n * @interface\n * @extends {IThenable.<TYPE>}\n * @template TYPE\n */\nvar Thenable = function() {};\n\n/**\n * Adds callbacks that will operate on the result of the Thenable, returning a\n * new child Promise.\n *\n * If the Thenable is fulfilled, the {@code onFulfilled} callback will be\n * invoked with the fulfillment value as argument, and the child Promise will\n * be fulfilled with the return value of the callback. If the callback throws\n * an exception, the child Promise will be rejected with the thrown value\n * instead.\n *\n * If the Thenable is rejected, the {@code onRejected} callback will be invoked\n * with the rejection reason as argument, and the child Promise will be rejected\n * with the return value of the callback or thrown value.\n *\n * @param {?(function(this:THIS, TYPE):\n * (RESULT|IThenable.<RESULT>|Thenable))=} opt_onFulfilled A\n * function that will be invoked with the fulfillment value if the Promise\n * is fullfilled.\n * @param {?(function(*): *)=} opt_onRejected A function that will be invoked\n * with the rejection reason if the Promise is rejected.\n * @param {THIS=} opt_context An optional context object that will be the\n * execution context for the callbacks. By default, functions are executed\n * with the default this.\n * @return {!CancellablePromise.<RESULT>} A new Promise that will receive the\n * result of the fulfillment or rejection callback.\n * @template RESULT,THIS\n */\nThenable.prototype.then = function() {};\n\n\n/**\n * An expando property to indicate that an object implements\n * {@code Thenable}.\n *\n * {@see addImplementation}.\n *\n * @const\n */\nThenable.IMPLEMENTED_BY_PROP = '$goog_Thenable';\n\n\n/**\n * Marks a given class (constructor) as an implementation of Thenable, so\n * that we can query that fact at runtime. The class must have already\n * implemented the interface.\n * Exports a 'then' method on the constructor prototype, so that the objects\n * also implement the extern {@see Thenable} interface for interop with\n * other Promise implementations.\n * @param {function(new:Thenable,...[?])} ctor The class constructor. The\n * corresponding class must have already implemented the interface.\n */\nThenable.addImplementation = function(ctor) {\n ctor.prototype.then = ctor.prototype.then;\n ctor.prototype.$goog_Thenable = true;\n};\n\n\n/**\n * @param {*} object\n * @return {boolean} Whether a given instance implements {@code Thenable}.\n * The class/superclass of the instance must call {@code addImplementation}.\n */\nThenable.isImplementedBy = function(object) {\n if (!object) {\n return false;\n }\n try {\n return !!object.$goog_Thenable;\n } catch (e) {\n // Property access seems to be forbidden.\n return false;\n }\n};\n\n\n/**\n * Like bind(), except that a 'this object' is not required. Useful when the\n * target function is already bound.\n *\n * Usage:\n * var g = partial(f, arg1, arg2);\n * g(arg3, arg4);\n *\n * @param {Function} fn A function to partially apply.\n * @param {...*} var_args Additional arguments that are partially applied to fn.\n * @return {!Function} A partially-applied form of the function bind() was\n * invoked as a method of.\n */\nvar partial = function(fn) {\n var args = Array.prototype.slice.call(arguments, 1);\n return function() {\n // Clone the array (with slice()) and append additional arguments\n // to the existing arguments.\n var newArgs = args.slice();\n newArgs.push.apply(newArgs, arguments);\n return fn.apply(this, newArgs);\n };\n};\n\n/**\n * Promises provide a result that may be resolved asynchronously. A Promise may\n * be resolved by being fulfilled or rejected with a value, which will be known\n * as the fulfillment value or the rejection reason. Whether fulfilled or\n * rejected, the Promise result is immutable once it is set.\n *\n * Promises may represent results of any type, including undefined. Rejection\n * reasons are typically Errors, but may also be of any type. Closure Promises\n * allow for optional type annotations that enforce that fulfillment values are\n * of the appropriate types at compile time.\n *\n * The result of a Promise is accessible by calling {@code then} and registering\n * {@code onFulfilled} and {@code onRejected} callbacks. Once the Promise\n * resolves, the relevant callbacks are invoked with the fulfillment value or\n * rejection reason as argument. Callbacks are always invoked in the order they\n * were registered, even when additional {@code then} calls are made from inside\n * another callback. A callback is always run asynchronously sometime after the\n * scope containing the registering {@code then} invocation has returned.\n *\n * If a Promise is resolved with another Promise, the first Promise will block\n * until the second is resolved, and then assumes the same result as the second\n * Promise. This allows Promises to depend on the results of other Promises,\n * linking together multiple asynchronous operations.\n *\n * This implementation is compatible with the Promises/A+ specification and\n * passes that specification's conformance test suite. A Closure Promise may be\n * resolved with a Promise instance (or sufficiently compatible Promise-like\n * object) created by other Promise implementations. From the specification,\n * Promise-like objects are known as \"Thenables\".\n *\n * @see http://promisesaplus.com/\n *\n * @param {function(\n * this:RESOLVER_CONTEXT,\n * function((TYPE|IThenable.<TYPE>|Thenable)),\n * function(*)): void} resolver\n * Initialization function that is invoked immediately with {@code resolve}\n * and {@code reject} functions as arguments. The Promise is resolved or\n * rejected with the first argument passed to either function.\n * @param {RESOLVER_CONTEXT=} opt_context An optional context for executing the\n * resolver function. If unspecified, the resolver function will be executed\n * in the default scope.\n * @constructor\n * @struct\n * @final\n * @implements {Thenable.<TYPE>}\n * @template TYPE,RESOLVER_CONTEXT\n */\nvar CancellablePromise = function(resolver, opt_context) {\n /**\n * The internal state of this Promise. Either PENDING, FULFILLED, REJECTED, or\n * BLOCKED.\n * @private {CancellablePromise.State_}\n */\n this.state_ = CancellablePromise.State_.PENDING;\n\n /**\n * The resolved result of the Promise. Immutable once set with either a\n * fulfillment value or rejection reason.\n * @private {*}\n */\n this.result_ = undefined;\n\n /**\n * For Promises created by calling {@code then()}, the originating parent.\n * @private {CancellablePromise}\n */\n this.parent_ = null;\n\n /**\n * The list of {@code onFulfilled} and {@code onRejected} callbacks added to\n * this Promise by calls to {@code then()}.\n * @private {Array.<CancellablePromise.CallbackEntry_>}\n */\n this.callbackEntries_ = null;\n\n /**\n * Whether the Promise is in the queue of Promises to execute.\n * @private {boolean}\n */\n this.executing_ = false;\n\n if (CancellablePromise.UNHANDLED_REJECTION_DELAY > 0) {\n /**\n * A timeout ID used when the {@code UNHANDLED_REJECTION_DELAY} is greater\n * than 0 milliseconds. The ID is set when the Promise is rejected, and\n * cleared only if an {@code onRejected} callback is invoked for the\n * Promise (or one of its descendants) before the delay is exceeded.\n *\n * If the rejection is not handled before the timeout completes, the\n * rejection reason is passed to the unhandled rejection handler.\n * @private {number}\n */\n this.unhandledRejectionId_ = 0;\n } else if (CancellablePromise.UNHANDLED_REJECTION_DELAY === 0) {\n /**\n * When the {@code UNHANDLED_REJECTION_DELAY} is set to 0 milliseconds, a\n * boolean that is set if the Promise is rejected, and reset to false if an\n * {@code onRejected} callback is invoked for the Promise (or one of its\n * descendants). If the rejection is not handled before the next timestep,\n * the rejection reason is passed to the unhandled rejection handler.\n * @private {boolean}\n */\n this.hadUnhandledRejection_ = false;\n }\n\n try {\n var self = this;\n resolver.call(\n opt_context, function(value) {\n self.resolve_(CancellablePromise.State_.FULFILLED, value);\n }, function(reason) {\n self.resolve_(CancellablePromise.State_.REJECTED, reason);\n });\n } catch (e) {\n this.resolve_(CancellablePromise.State_.REJECTED, e);\n }\n};\n\n/**\n * The delay in milliseconds before a rejected Promise's reason is passed to\n * the rejection handler. By default, the rejection handler rethrows the\n * rejection reason so that it appears in the developer console or\n * {@code window.onerror} handler.\n * Rejections are rethrown as quickly as possible by default. A negative value\n * disables rejection handling entirely.\n * @type {number}\n */\nCancellablePromise.UNHANDLED_REJECTION_DELAY = 0;\n\n\n/**\n * The possible internal states for a Promise. These states are not directly\n * observable to external callers.\n * @enum {number}\n * @private\n */\nCancellablePromise.State_ = {\n /** The Promise is waiting for resolution. */\n PENDING: 0,\n\n /** The Promise is blocked waiting for the result of another Thenable. */\n BLOCKED: 1,\n\n /** The Promise has been resolved with a fulfillment value. */\n FULFILLED: 2,\n\n /** The Promise has been resolved with a rejection reason. */\n REJECTED: 3\n};\n\n\n/**\n * Typedef for entries in the callback chain. Each call to {@code then},\n * {@code thenCatch}, or {@code thenAlways} creates an entry containing the\n * functions that may be invoked once the Promise is resolved.\n *\n * @typedef {{\n * child: CancellablePromise,\n * onFulfilled: function(*),\n * onRejected: function(*)\n * }}\n * @private\n */\nCancellablePromise.CallbackEntry_ = null;\n\n\n/**\n * @param {(TYPE|Thenable.<TYPE>|Thenable)=} opt_value\n * @return {!CancellablePromise.<TYPE>} A new Promise that is immediately resolved\n * with the given value.\n * @template TYPE\n */\nCancellablePromise.resolve = function(opt_value) {\n return new CancellablePromise(function(resolve) {\n resolve(opt_value);\n });\n};\n\n\n/**\n * @param {*=} opt_reason\n * @return {!CancellablePromise} A new Promise that is immediately rejected with the\n * given reason.\n */\nCancellablePromise.reject = function(opt_reason) {\n return new CancellablePromise(function(resolve, reject) {\n reject(opt_reason);\n });\n};\n\n\n/**\n * @param {!Array.<!(Thenable.<TYPE>|Thenable)>} promises\n * @return {!CancellablePromise.<TYPE>} A Promise that receives the result of the\n * first Promise (or Promise-like) input to complete.\n * @template TYPE\n */\nCancellablePromise.race = function(promises) {\n return new CancellablePromise(function(resolve, reject) {\n if (!promises.length) {\n resolve(undefined);\n }\n for (var i = 0, promise; (promise = promises[i]); i++) {\n promise.then(resolve, reject);\n }\n });\n};\n\n\n/**\n * @param {!Array.<!(Thenable.<TYPE>|Thenable)>} promises\n * @return {!CancellablePromise.<!Array.<TYPE>>} A Promise that receives a list of\n * every fulfilled value once every input Promise (or Promise-like) is\n * successfully fulfilled, or is rejected by the first rejection result.\n * @template TYPE\n */\nCancellablePromise.all = function(promises) {\n return new CancellablePromise(function(resolve, reject) {\n var toFulfill = promises.length;\n var values = [];\n\n if (!toFulfill) {\n resolve(values);\n return;\n }\n\n var onFulfill = function(index, value) {\n toFulfill--;\n values[index] = value;\n if (toFulfill === 0) {\n resolve(values);\n }\n };\n\n var onReject = function(reason) {\n reject(reason);\n };\n\n for (var i = 0, promise; (promise = promises[i]); i++) {\n promise.then(partial(onFulfill, i), onReject);\n }\n });\n};\n\n\n/**\n * @param {!Array.<!(Thenable.<TYPE>|Thenable)>} promises\n * @return {!CancellablePromise.<TYPE>} A Promise that receives the value of\n * the first input to be fulfilled, or is rejected with a list of every\n * rejection reason if all inputs are rejected.\n * @template TYPE\n */\nCancellablePromise.firstFulfilled = function(promises) {\n return new CancellablePromise(function(resolve, reject) {\n var toReject = promises.length;\n var reasons = [];\n\n if (!toReject) {\n resolve(undefined);\n return;\n }\n\n var onFulfill = function(value) {\n resolve(value);\n };\n\n var onReject = function(index, reason) {\n toReject--;\n reasons[index] = reason;\n if (toReject === 0) {\n reject(reasons);\n }\n };\n\n for (var i = 0, promise; (promise = promises[i]); i++) {\n promise.then(onFulfill, partial(onReject, i));\n }\n });\n};\n\n\n/**\n * Adds callbacks that will operate on the result of the Promise, returning a\n * new child Promise.\n *\n * If the Promise is fulfilled, the {@code onFulfilled} callback will be invoked\n * with the fulfillment value as argument, and the child Promise will be\n * fulfilled with the return value of the callback. If the callback throws an\n * exception, the child Promise will be rejected with the thrown value instead.\n *\n * If the Promise is rejected, the {@code onRejected} callback will be invoked\n * with the rejection reason as argument, and the child Promise will be rejected\n * with the return value (or thrown value) of the callback.\n *\n * @override\n */\nCancellablePromise.prototype.then = function(opt_onFulfilled, opt_onRejected, opt_context) {\n return this.addChildPromise_(\n isFunction(opt_onFulfilled) ? opt_onFulfilled : null,\n isFunction(opt_onRejected) ? opt_onRejected : null,\n opt_context);\n};\nThenable.addImplementation(CancellablePromise);\n\n\n/**\n * Adds a callback that will be invoked whether the Promise is fulfilled or\n * rejected. The callback receives no argument, and no new child Promise is\n * created. This is useful for ensuring that cleanup takes place after certain\n * asynchronous operations. Callbacks added with {@code thenAlways} will be\n * executed in the same order with other calls to {@code then},\n * {@code thenAlways}, or {@code thenCatch}.\n *\n * Since it does not produce a new child Promise, cancellation propagation is\n * not prevented by adding callbacks with {@code thenAlways}. A Promise that has\n * a cleanup handler added with {@code thenAlways} will be canceled if all of\n * its children created by {@code then} (or {@code thenCatch}) are canceled.\n *\n * @param {function(this:THIS): void} onResolved A function that will be invoked\n * when the Promise is resolved.\n * @param {THIS=} opt_context An optional context object that will be the\n * execution context for the callbacks. By default, functions are executed\n * in the global scope.\n * @return {!CancellablePromise.<TYPE>} This Promise, for chaining additional calls.\n * @template THIS\n */\nCancellablePromise.prototype.thenAlways = function(onResolved, opt_context) {\n var callback = function() {\n try {\n // Ensure that no arguments are passed to onResolved.\n onResolved.call(opt_context);\n } catch (err) {\n CancellablePromise.handleRejection_.call(null, err);\n }\n };\n\n this.addCallbackEntry_({\n child: null,\n onRejected: callback,\n onFulfilled: callback\n });\n return this;\n};\n\n\n/**\n * Adds a callback that will be invoked only if the Promise is rejected. This\n * is equivalent to {@code then(null, onRejected)}.\n *\n * @param {!function(this:THIS, *): *} onRejected A function that will be\n * invoked with the rejection reason if the Promise is rejected.\n * @param {THIS=} opt_context An optional context object that will be the\n * execution context for the callbacks. By default, functions are executed\n * in the global scope.\n * @return {!CancellablePromise} A new Promise that will receive the result of the\n * callback.\n * @template THIS\n */\nCancellablePromise.prototype.thenCatch = function(onRejected, opt_context) {\n return this.addChildPromise_(null, onRejected, opt_context);\n};\n\n/**\n * Alias of {@link CancellablePromise.prototype.thenCatch}\n */\nCancellablePromise.prototype.catch = CancellablePromise.prototype.thenCatch;\n\n\n/**\n * Cancels the Promise if it is still pending by rejecting it with a cancel\n * Error. No action is performed if the Promise is already resolved.\n *\n * All child Promises of the canceled Promise will be rejected with the same\n * cancel error, as with normal Promise rejection. If the Promise to be canceled\n * is the only child of a pending Promise, the parent Promise will also be\n * canceled. Cancellation may propagate upward through multiple generations.\n *\n * @param {string=} opt_message An optional debugging message for describing the\n * cancellation reason.\n */\nCancellablePromise.prototype.cancel = function(opt_message) {\n if (this.state_ === CancellablePromise.State_.PENDING) {\n async.run(function() {\n var err = new CancellablePromise.CancellationError(opt_message);\n err.IS_CANCELLATION_ERROR = true;\n this.cancelInternal_(err);\n }, this);\n }\n};\n\n\n/**\n * Cancels this Promise with the given error.\n *\n * @param {!Error} err The cancellation error.\n * @private\n */\nCancellablePromise.prototype.cancelInternal_ = function(err) {\n if (this.state_ === CancellablePromise.State_.PENDING) {\n if (this.parent_) {\n // Cancel the Promise and remove it from the parent's child list.\n this.parent_.cancelChild_(this, err);\n } else {\n this.resolve_(CancellablePromise.State_.REJECTED, err);\n }\n }\n};\n\n\n/**\n * Cancels a child Promise from the list of callback entries. If the Promise has\n * not already been resolved, reject it with a cancel error. If there are no\n * other children in the list of callback entries, propagate the cancellation\n * by canceling this Promise as well.\n *\n * @param {!CancellablePromise} childPromise The Promise to cancel.\n * @param {!Error} err The cancel error to use for rejecting the Promise.\n * @private\n */\nCancellablePromise.prototype.cancelChild_ = function(childPromise, err) {\n if (!this.callbackEntries_) {\n return;\n }\n var childCount = 0;\n var childIndex = -1;\n\n // Find the callback entry for the childPromise, and count whether there are\n // additional child Promises.\n for (var i = 0, entry; (entry = this.callbackEntries_[i]); i++) {\n var child = entry.child;\n if (child) {\n childCount++;\n if (child === childPromise) {\n childIndex = i;\n }\n if (childIndex >= 0 && childCount > 1) {\n break;\n }\n }\n }\n\n // If the child Promise was the only child, cancel this Promise as well.\n // Otherwise, reject only the child Promise with the cancel error.\n if (childIndex >= 0) {\n if (this.state_ === CancellablePromise.State_.PENDING && childCount === 1) {\n this.cancelInternal_(err);\n } else {\n var callbackEntry = this.callbackEntries_.splice(childIndex, 1)[0];\n this.executeCallback_(\n callbackEntry, CancellablePromise.State_.REJECTED, err);\n }\n }\n};\n\n\n/**\n * Adds a callback entry to the current Promise, and schedules callback\n * execution if the Promise has already been resolved.\n *\n * @param {CancellablePromise.CallbackEntry_} callbackEntry Record containing\n * {@code onFulfilled} and {@code onRejected} callbacks to execute after\n * the Promise is resolved.\n * @private\n */\nCancellablePromise.prototype.addCallbackEntry_ = function(callbackEntry) {\n if ((!this.callbackEntries_ || !this.callbackEntries_.length) &&\n (this.state_ === CancellablePromise.State_.FULFILLED ||\n this.state_ === CancellablePromise.State_.REJECTED)) {\n this.scheduleCallbacks_();\n }\n if (!this.callbackEntries_) {\n this.callbackEntries_ = [];\n }\n this.callbackEntries_.push(callbackEntry);\n};\n\n\n/**\n * Creates a child Promise and adds it to the callback entry list. The result of\n * the child Promise is determined by the state of the parent Promise and the\n * result of the {@code onFulfilled} or {@code onRejected} callbacks as\n * specified in the Promise resolution procedure.\n *\n * @see http://promisesaplus.com/#the__method\n *\n * @param {?function(this:THIS, TYPE):\n * (RESULT|CancellablePromise.<RESULT>|Thenable)} onFulfilled A callback that\n * will be invoked if the Promise is fullfilled, or null.\n * @param {?function(this:THIS, *): *} onRejected A callback that will be\n * invoked if the Promise is rejected, or null.\n * @param {THIS=} opt_context An optional execution context for the callbacks.\n * in the default calling context.\n * @return {!CancellablePromise} The child Promise.\n * @template RESULT,THIS\n * @private\n */\nCancellablePromise.prototype.addChildPromise_ = function(\nonFulfilled, onRejected, opt_context) {\n\n var callbackEntry = {\n child: null,\n onFulfilled: null,\n onRejected: null\n };\n\n callbackEntry.child = new CancellablePromise(function(resolve, reject) {\n // Invoke onFulfilled, or resolve with the parent's value if absent.\n callbackEntry.onFulfilled = onFulfilled ? function(value) {\n try {\n var result = onFulfilled.call(opt_context, value);\n resolve(result);\n } catch (err) {\n reject(err);\n }\n } : resolve;\n\n // Invoke onRejected, or reject with the parent's reason if absent.\n callbackEntry.onRejected = onRejected ? function(reason) {\n try {\n var result = onRejected.call(opt_context, reason);\n if (!isDef(result) && reason.IS_CANCELLATION_ERROR) {\n // Propagate cancellation to children if no other result is returned.\n reject(reason);\n } else {\n resolve(result);\n }\n } catch (err) {\n reject(err);\n }\n } : reject;\n });\n\n callbackEntry.child.parent_ = this;\n this.addCallbackEntry_(\n /** @type {CancellablePromise.CallbackEntry_} */ (callbackEntry));\n return callbackEntry.child;\n};\n\n\n/**\n * Unblocks the Promise and fulfills it with the given value.\n *\n * @param {TYPE} value\n * @private\n */\nCancellablePromise.prototype.unblockAndFulfill_ = function(value) {\n if (this.state_ !== CancellablePromise.State_.BLOCKED) {\n throw new Error('CancellablePromise is not blocked.');\n }\n this.state_ = CancellablePromise.State_.PENDING;\n this.resolve_(CancellablePromise.State_.FULFILLED, value);\n};\n\n\n/**\n * Unblocks the Promise and rejects it with the given rejection reason.\n *\n * @param {*} reason\n * @private\n */\nCancellablePromise.prototype.unblockAndReject_ = function(reason) {\n if (this.state_ !== CancellablePromise.State_.BLOCKED) {\n throw new Error('CancellablePromise is not blocked.');\n }\n this.state_ = CancellablePromise.State_.PENDING;\n this.resolve_(CancellablePromise.State_.REJECTED, reason);\n};\n\n\n/**\n * Attempts to resolve a Promise with a given resolution state and value. This\n * is a no-op if the given Promise has already been resolved.\n *\n * If the given result is a Thenable (such as another Promise), the Promise will\n * be resolved with the same state and result as the Thenable once it is itself\n * resolved.\n *\n * If the given result is not a Thenable, the Promise will be fulfilled or\n * rejected with that result based on the given state.\n *\n * @see http://promisesaplus.com/#the_promise_resolution_procedure\n *\n * @param {CancellablePromise.State_} state\n * @param {*} x The result to apply to the Promise.\n * @private\n */\nCancellablePromise.prototype.resolve_ = function(state, x) {\n if (this.state_ !== CancellablePromise.State_.PENDING) {\n return;\n }\n\n if (this === x) {\n state = CancellablePromise.State_.REJECTED;\n x = new TypeError('CancellablePromise cannot resolve to itself');\n\n } else if (Thenable.isImplementedBy(x)) {\n x = /** @type {!Thenable} */ (x);\n this.state_ = CancellablePromise.State_.BLOCKED;\n x.then(this.unblockAndFulfill_, this.unblockAndReject_, this);\n return;\n\n } else if (isObject(x)) {\n try {\n var then = x.then;\n if (isFunction(then)) {\n this.tryThen_(x, then);\n return;\n }\n } catch (e) {\n state = CancellablePromise.State_.REJECTED;\n x = e;\n }\n }\n\n this.result_ = x;\n this.state_ = state;\n this.scheduleCallbacks_();\n\n if (state === CancellablePromise.State_.REJECTED && !x.IS_CANCELLATION_ERROR) {\n CancellablePromise.addUnhandledRejection_(this, x);\n }\n};\n\n\n/**\n * Attempts to call the {@code then} method on an object in the hopes that it is\n * a Promise-compatible instance. This allows interoperation between different\n * Promise implementations, however a non-compliant object may cause a Promise\n * to hang indefinitely. If the {@code then} method throws an exception, the\n * dependent Promise will be rejected with the thrown value.\n *\n * @see http://promisesaplus.com/#point-70\n *\n * @param {Thenable} thenable An object with a {@code then} method that may be\n * compatible with the Promise/A+ specification.\n * @param {!Function} then The {@code then} method of the Thenable object.\n * @private\n */\nCancellablePromise.prototype.tryThen_ = function(thenable, then) {\n this.state_ = CancellablePromise.State_.BLOCKED;\n var promise = this;\n var called = false;\n\n var resolve = function(value) {\n if (!called) {\n called = true;\n promise.unblockAndFulfill_(value);\n }\n };\n\n var reject = function(reason) {\n if (!called) {\n called = true;\n promise.unblockAndReject_(reason);\n }\n };\n\n try {\n then.call(thenable, resolve, reject);\n } catch (e) {\n reject(e);\n }\n};\n\n\n/**\n * Executes the pending callbacks of a resolved Promise after a timeout.\n *\n * Section 2.2.4 of the Promises/A+ specification requires that Promise\n * callbacks must only be invoked from a call stack that only contains Promise\n * implementation code, which we accomplish by invoking callback execution after\n * a timeout. If {@code startExecution_} is called multiple times for the same\n * Promise, the callback chain will be evaluated only once. Additional callbacks\n * may be added during the evaluation phase, and will be executed in the same\n * event loop.\n *\n * All Promises added to the waiting list during the same browser event loop\n * will be executed in one batch to avoid using a separate timeout per Promise.\n *\n * @private\n */\nCancellablePromise.prototype.scheduleCallbacks_ = function() {\n if (!this.executing_) {\n this.executing_ = true;\n async.run(this.executeCallbacks_, this);\n }\n};\n\n\n/**\n * Executes all pending callbacks for this Promise.\n *\n * @private\n */\nCancellablePromise.prototype.executeCallbacks_ = function() {\n while (this.callbackEntries_ && this.callbackEntries_.length) {\n var entries = this.callbackEntries_;\n this.callbackEntries_ = [];\n\n for (var i = 0; i < entries.length; i++) {\n this.executeCallback_(entries[i], this.state_, this.result_);\n }\n }\n this.executing_ = false;\n};\n\n\n/**\n * Executes a pending callback for this Promise. Invokes an {@code onFulfilled}\n * or {@code onRejected} callback based on the resolved state of the Promise.\n *\n * @param {!CancellablePromise.CallbackEntry_} callbackEntry An entry containing the\n * onFulfilled and/or onRejected callbacks for this step.\n * @param {CancellablePromise.State_} state The resolution status of the Promise,\n * either FULFILLED or REJECTED.\n * @param {*} result The resolved result of the Promise.\n * @private\n */\nCancellablePromise.prototype.executeCallback_ = function(\ncallbackEntry, state, result) {\n if (state === CancellablePromise.State_.FULFILLED) {\n callbackEntry.onFulfilled(result);\n } else {\n this.removeUnhandledRejection_();\n callbackEntry.onRejected(result);\n }\n};\n\n\n/**\n * Marks this rejected Promise as having being handled. Also marks any parent\n * Promises in the rejected state as handled. The rejection handler will no\n * longer be invoked for this Promise (if it has not been called already).\n *\n * @private\n */\nCancellablePromise.prototype.removeUnhandledRejection_ = function() {\n var p;\n if (CancellablePromise.UNHANDLED_REJECTION_DELAY > 0) {\n for (p = this; p && p.unhandledRejectionId_; p = p.parent_) {\n clearTimeout(p.unhandledRejectionId_);\n p.unhandledRejectionId_ = 0;\n }\n } else if (CancellablePromise.UNHANDLED_REJECTION_DELAY === 0) {\n for (p = this; p && p.hadUnhandledRejection_; p = p.parent_) {\n p.hadUnhandledRejection_ = false;\n }\n }\n};\n\n\n/**\n * Marks this rejected Promise as unhandled. If no {@code onRejected} callback\n * is called for this Promise before the {@code UNHANDLED_REJECTION_DELAY}\n * expires, the reason will be passed to the unhandled rejection handler. The\n * handler typically rethrows the rejection reason so that it becomes visible in\n * the developer console.\n *\n * @param {!CancellablePromise} promise The rejected Promise.\n * @param {*} reason The Promise rejection reason.\n * @private\n */\nCancellablePromise.addUnhandledRejection_ = function(promise, reason) {\n if (CancellablePromise.UNHANDLED_REJECTION_DELAY > 0) {\n promise.unhandledRejectionId_ = setTimeout(function() {\n CancellablePromise.handleRejection_.call(null, reason);\n }, CancellablePromise.UNHANDLED_REJECTION_DELAY);\n\n } else if (CancellablePromise.UNHANDLED_REJECTION_DELAY === 0) {\n promise.hadUnhandledRejection_ = true;\n async.run(function() {\n if (promise.hadUnhandledRejection_) {\n CancellablePromise.handleRejection_.call(null, reason);\n }\n });\n }\n};\n\n\n/**\n * A method that is invoked with the rejection reasons for Promises that are\n * rejected but have no {@code onRejected} callbacks registered yet.\n * @type {function(*)}\n * @private\n */\nCancellablePromise.handleRejection_ = async.throwException;\n\n\n/**\n * Sets a handler that will be called with reasons from unhandled rejected\n * Promises. If the rejected Promise (or one of its descendants) has an\n * {@code onRejected} callback registered, the rejection will be considered\n * handled, and the rejection handler will not be called.\n *\n * By default, unhandled rejections are rethrown so that the error may be\n * captured by the developer console or a {@code window.onerror} handler.\n *\n * @param {function(*)} handler A function that will be called with reasons from\n * rejected Promises. Defaults to {@code async.throwException}.\n */\nCancellablePromise.setUnhandledRejectionHandler = function(handler) {\n CancellablePromise.handleRejection_ = handler;\n};\n\n\n\n/**\n * Error used as a rejection reason for canceled Promises.\n *\n * @param {string=} opt_message\n * @constructor\n * @extends {Error}\n * @final\n */\nCancellablePromise.CancellationError = class extends Error {\n constructor(opt_message) {\n super(opt_message);\n\n if (opt_message) {\n this.message = opt_message;\n }\n }\n};\n\n/** @override */\nCancellablePromise.CancellationError.prototype.name = 'cancel';\n\nexport {CancellablePromise};\nexport default CancellablePromise;\n","'use strict';\n\nimport core from 'metal';\n\nconst REGEX = /([\\/])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])*)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?)/g;\n\n/**\n * Converts the given array of regex matches to a more readable object format.\n * @param {!Array<string>} matches\n * @return {!Object}\n */\nfunction convertMatchesToObj(matches) {\n\treturn {\n\t\tmatch: matches[0],\n\t\tprefix: matches[1],\n\t\tname: matches[2],\n\t\tparamPattern: matches[3],\n\t\tunnamedPattern: matches[4],\n\t\tmodifier: matches[5]\n\t};\n}\n\n/**\n * Converts the given tokens parsed from a route format string to a regex.\n * @param {!Array<string|!Object>} tokens\n * @return {!RegExp}\n */\nfunction convertTokensToRegex(tokens) {\n\tlet regex = '';\n\tfor (let i = 0; i < tokens.length; i++) {\n\t\tif (core.isString(tokens[i])) {\n\t\t\tregex += escape(tokens[i]);\n\t\t} else {\n\t\t\tlet capture = encloseNonCapturingGroup(tokens[i].pattern);\n\t\t\tif (tokens[i].repeat) {\n\t\t\t\tcapture += encloseNonCapturingGroup('\\\\/' + capture) + '*';\n\t\t\t}\n\t\t\tcapture = escape(tokens[i].prefix) + `(${capture})`;\n\t\t\tif (tokens[i].optional) {\n\t\t\t\tif (!tokens[i].partial) {\n\t\t\t\t\tcapture = encloseNonCapturingGroup(capture);\n\t\t\t\t}\n\t\t\t\tcapture += '?';\n\t\t\t}\n\t\t\tregex += capture;\n\t\t}\n\t}\n\treturn new RegExp('^' + makeTrailingSlashOptional(regex) + '$');\n}\n\n/**\n * Encloses the given regex pattern into a non capturing group.\n * @param {string} pattern\n * @return {string}\n */\nfunction encloseNonCapturingGroup(pattern) {\n\treturn `(?:${pattern})`;\n}\n\n/**\n * Escapes the given string to show up in the path regex.\n * @param {string} str\n * @return {string}\n */\nfunction escape(str) {\n\treturn str.replace(/([.+*?=^!:${}()[\\]|\\/\\\\])/g, '\\\\$1');\n}\n\n/**\n * Makes trailing slash optional on paths.\n * @param {string} regex\n * @param {string}\n */\nfunction makeTrailingSlashOptional(regex) {\n\tif (/\\/$/.test(regex)) {\n\t\tregex += '?';\n\t} else {\n\t\tregex += '\\\\/?';\n\t}\n\treturn regex;\n}\n\n/**\n * Parses the given route format string into tokens representing its contents.\n * @param {!Array|string} routeOrTokens Either a route format string or tokens\n * previously parsed via the `parse` function.\n * @return {!Array<string|!Object>} An array of tokens that can be either plain\n * strings (part of the route) or objects containing informations on params.\n */\nexport function parse(routeOrTokens) {\n\tif (!core.isString(routeOrTokens)) {\n\t\treturn routeOrTokens;\n\t}\n\n\tconst route = routeOrTokens;\n\tlet unnamedCount = 0;\n\tconst tokens = [];\n\tlet currPath = '';\n\tlet index = 0;\n\n\tlet matches = REGEX.exec(route);\n\twhile (matches) {\n\t\tconst data = convertMatchesToObj(matches);\n\n\t\tcurrPath = route.slice(index, matches.index);\n\t\tindex = matches.index + data.match.length;\n\t\ttokens.push(currPath);\n\n\t\ttokens.push({\n\t\t\tname: data.name ? data.name : '' + unnamedCount++,\n\t\t\tpartial: route[index] && route[index] !== data.prefix,\n\t\t\tprefix: data.prefix || '',\n\t\t\tpattern: data.paramPattern || data.unnamedPattern || '[^\\\\/]+',\n\t\t\trepeat: data.modifier === '*' || data.modifier === '+',\n\t\t\toptional: data.modifier === '*' || data.modifier === '?'\n\t\t});\n\n\t\tmatches = REGEX.exec(route);\n\t}\n\n\tif (index < route.length) {\n\t\ttokens.push(route.substr(index));\n\t}\n\treturn tokens;\n}\n\n/**\n * Converts the given route format string to a regex that can extract param\n * data from paths matching it.\n * @param {!Array|string} routeOrTokens Either a route format string or tokens\n * previously parsed via the `parse` function.\n * @return {!RegExp}\n */\nexport function toRegex(routeOrTokens) {\n\treturn convertTokensToRegex(parse(routeOrTokens));\n}\n\n/**\n * Extracts data from the given path according to the specified route format.\n * @param {!Array|string} routeOrTokens Either a route format string or tokens\n * previously parsed via the `parse` function.\n * @param {string} The path to extract param data from.\n * @return {Object<string, string>} The data object, or null if the path doesn't\n * match the given format.\n */\nexport function extractData(routeOrTokens, path) {\n\tconst data = {};\n\tconst tokens = parse(routeOrTokens);\n\tconst match = path.match(convertTokensToRegex(tokens));\n\n\tif (!match) {\n\t\treturn null;\n\t}\n\n\tlet paramIndex = 1;\n\tfor (let i = 0; i < tokens.length; i++) {\n\t\tif (!core.isString(tokens[i])) {\n\t\t\tlet value = match[paramIndex++];\n\t\t\tif (core.isDef(value)) {\n\t\t\t\tif (tokens[i].repeat) {\n\t\t\t\t\tvalue = value.split('/');\n\t\t\t\t}\n\t\t\t\tdata[tokens[i].name] = value;\n\t\t\t}\n\t\t}\n\t}\n\treturn data;\n}\n","'use strict';\n\nimport { core } from 'metal';\nimport { extractData, parse, toRegex } from 'metal-path-parser';\n\nclass Route {\n\n\t/**\n\t * Route class.\n\t * @param {!string|RegExp|Function} path\n\t * @param {!Function} handler\n\t * @constructor\n\t */\n\tconstructor(path, handler) {\n\t\tif (!core.isDefAndNotNull(path)) {\n\t\t\tthrow new Error('Route path not specified.');\n\t\t}\n\t\tif (!core.isFunction(handler)) {\n\t\t\tthrow new Error('Route handler is not a function.');\n\t\t}\n\n\t\t/**\n\t\t * Defines the handler which will execute once a URL in the application\n\t\t * matches the path.\n\t\t * @type {!Function}\n\t\t * @protected\n\t\t */\n\t\tthis.handler = handler;\n\n\t\t/**\n\t\t * Defines the path which will trigger the route handler.\n\t\t * @type {!string|RegExp|Function}\n\t\t * @protected\n\t\t */\n\t\tthis.path = path;\n\t}\n\n\t/**\n\t* Builds parsed data (regex and tokens) for this route.\n\t* @return {!Object}\n\t* @protected\n\t*/\n\tbuildParsedData_() {\n\t\tif (!this.parsedData_) {\n var tokens = parse(this.path);\n var regex = toRegex(tokens);\n\t\t\tthis.parsedData_ = {\n regex,\n tokens\n };\n\t\t}\n\t\treturn this.parsedData_;\n\t}\n\n\t/**\n\t * Extracts param data from the given path, according to this route.\n\t * @param {string} path The url path to extract params from.\n\t * @return {Object} The extracted data, if the path matches this route, or\n\t * null otherwise.\n\t */\n\textractParams(path) {\n\t\tif (core.isString(this.path)) {\n\t\t\treturn extractData(this.buildParsedData_().tokens, path);\n\t\t}\n\t\treturn {};\n\t}\n\n\t/**\n\t * Gets the route handler.\n\t * @return {!Function}\n\t */\n\tgetHandler() {\n\t\treturn this.handler;\n\t}\n\n\t/**\n\t * Gets the route path.\n\t * @return {!string|RegExp|Function}\n\t */\n\tgetPath() {\n\t\treturn this.path;\n\t}\n\n\t/**\n \t * Matches if the router can handle the tested path.\n \t * @param {!string} value Path to test (may contain the querystring part).\n\t * @return {boolean} Returns true if matches any route.\n\t */\n\tmatchesPath(value) {\n\t\tvar path = this.path;\n\n\t\tif (core.isFunction(path)) {\n\t\t\treturn path(value);\n\t\t}\n\t\tif (core.isString(path)) {\n\t\t\tpath = this.buildParsedData_().regex;\n\t\t}\n\t\tif (path instanceof RegExp) {\n\t\t\treturn value.search(path) > -1;\n\t\t}\n\n\t\treturn false;\n\t}\n\n}\n\nexport default Route;\n","'use strict';\n\nimport { Disposable } from 'metal';\n\nclass Cacheable extends Disposable {\n\n\t/**\n\t * Abstract class for defining cacheable behavior.\n\t * @constructor\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the cached data.\n\t\t * @type {!Object}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.cache = null;\n\n\t\t/**\n\t\t * Holds whether class is cacheable.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.cacheable = false;\n\t}\n\n\t/**\n\t * Adds content to the cache.\n\t * @param {string} content Content to be cached.\n\t * @chainable\n\t */\n\taddCache(content) {\n\t\tif (this.cacheable) {\n\t\t\tthis.cache = content;\n\t\t}\n\t\treturn this;\n\t}\n\n\t/**\n\t * Clears the cache.\n\t * @chainable\n\t */\n\tclearCache() {\n\t\tthis.cache = null;\n\t\treturn this;\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tthis.clearCache();\n\t}\n\n\t/**\n\t * Gets the cached content.\n\t * @return {Object} Cached content.\n\t * @protected\n\t */\n\tgetCache() {\n\t\treturn this.cache;\n\t}\n\n\t/**\n\t * Whether the class is cacheable.\n\t * @return {boolean} Returns true when class is cacheable, false otherwise.\n\t */\n\tisCacheable() {\n\t\treturn this.cacheable;\n\t}\n\n\t/**\n\t * Sets whether the class is cacheable.\n\t * @param {boolean} cacheable\n\t */\n\tsetCacheable(cacheable) {\n\t\tif (!cacheable) {\n\t\t\tthis.clearCache();\n\t\t}\n\t\tthis.cacheable = cacheable;\n\t}\n\n}\n\nexport default Cacheable;\n","'use strict';\n\nimport { core } from 'metal';\nimport { globalEval } from 'metal-dom';\nimport Cacheable from '../cacheable/Cacheable';\nimport CancellablePromise from 'metal-promise';\n\nclass Screen extends Cacheable {\n\n\t/**\n\t * Screen class is a special type of route handler that provides helper\n\t * utilities that adds lifecycle and methods to provide content to each\n\t * registered surface.\n\t * @constructor\n\t * @extends {Cacheable}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the screen id.\n\t\t * @type {string}\n\t\t * @protected\n\t\t */\n\t\tthis.id = this.makeId_(core.getUid());\n\n\t\t/**\n\t\t * Holds the screen title. Relevant when the page title should be\n\t\t * upadated when screen is rendered.\n\t\t * @type {?string=}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.title = null;\n\t}\n\n\t/**\n\t * Fires when the screen is active. Allows a screen to perform any setup\n\t * that requires its DOM to be visible. Lifecycle.\n\t */\n\tactivate() {\n\t\tconsole.log('Screen [' + this + '] activate');\n\t}\n\n\t/**\n\t * Gives the Screen a chance to cancel the navigation and stop itself from\n\t * being deactivated. Can be used, for example, if the screen has unsaved\n\t * state. Lifecycle. Clean-up should not be preformed here, since the\n\t * navigation may still be cancelled. Do clean-up in deactivate.\n\t * @return {boolean=} If returns true, the current screen is locked and the\n\t * next nagivation interrupted.\n\t */\n\tbeforeDeactivate() {\n\t\tconsole.log('Screen [' + this + '] beforeDeactivate');\n\t}\n\n\t/**\n\t * Gives the Screen a chance format the path before history update.\n\t * @path {!string} path Navigation path.\n\t * @return {!string} Navigation path to use on history.\n\t */\n\tbeforeUpdateHistoryPath(path) {\n\t\treturn path;\n\t}\n\n\t/**\n\t * Gives the Screen a chance format the state before history update.\n\t * @path {!object} state History state.\n\t * @return {!object} History state to use on history.\n\t */\n\tbeforeUpdateHistoryState(state) {\n\t\treturn state;\n\t}\n\n\t/**\n\t * Allows a screen to do any cleanup necessary after it has been\n\t * deactivated, for example cancelling outstanding requests or stopping\n\t * timers. Lifecycle.\n\t */\n\tdeactivate() {\n\t\tconsole.log('Screen [' + this + '] deactivate');\n\t}\n\n\t/**\n\t * Dispose a screen, either after it is deactivated (in the case of a\n\t * non-cacheable view) or when the App is itself disposed for whatever\n\t * reason. Lifecycle.\n\t */\n\tdisposeInternal() {\n\t\tsuper.disposeInternal();\n\t\tconsole.log('Screen [' + this + '] dispose');\n\t}\n\n\t/**\n\t * Allows a screen to evaluate scripts before the element is made visible.\n\t * Lifecycle.\n\t * @param {!object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @return {?CancellablePromise=} This can return a promise, which will\n\t * pause the navigation until it is resolved.\n\t */\n\tevaluateScripts(surfaces) {\n\t\tObject.keys(surfaces).forEach(sId => {\n\t\t\tif (surfaces[sId].activeChild) {\n\t\t\t\tglobalEval.runScriptsInElement(surfaces[sId].activeChild);\n\t\t\t}\n\t\t});\n\t\treturn CancellablePromise.resolve();\n\t}\n\n\t/**\n\t * Allows a screen to evaluate styles before the element is made visible.\n\t * Lifecycle.\n\t * @param {!object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @return {?CancellablePromise=} This can return a promise, which will\n\t * pause the navigation until it is resolved.\n\t */\n\tevaluateStyles() {\n\t\treturn CancellablePromise.resolve();\n\t}\n\n\t/**\n\t * Allows a screen to perform any setup immediately before the element is\n\t * made visible. Lifecycle.\n\t * @param {!object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @return {?CancellablePromise=} This can return a promise, which will pause the\n\t * navigation until it is resolved.\n\t */\n\tflip(surfaces) {\n\t\tconsole.log('Screen [' + this + '] flip');\n\n\t\tvar transitions = [];\n\n\t\tObject.keys(surfaces).forEach(sId => {\n\t\t\tvar surface = surfaces[sId];\n\t\t\tvar deferred = surface.show(this.id);\n\t\t\ttransitions.push(deferred);\n\t\t});\n\n\t\treturn CancellablePromise.all(transitions);\n\t}\n\n\t/**\n\t * Gets the screen id.\n\t * @return {string}\n\t */\n\tgetId() {\n\t\treturn this.id;\n\t}\n\n\t/**\n\t * Returns the content for the given surface, or null if the surface isn't\n\t * used by this screen. This will be called when a screen is initially\n\t * constructed or, if a screen is non-cacheable, when navigated.\n\t * @param {!string} surfaceId The id of the surface DOM element.\n\t * @param {!Object} params Params extracted from the current path.\n\t * @return {?string|Element=} This can return a string or node representing\n\t * the content of the surface. If returns falsy values surface default\n\t * content is restored.\n\t */\n\tgetSurfaceContent() {\n\t\tconsole.log('Screen [' + this + '] getSurfaceContent');\n\t}\n\n\t/**\n\t * Gets the screen title.\n\t * @return {?string=}\n\t */\n\tgetTitle() {\n\t\treturn this.title;\n\t}\n\n\t/**\n\t * Returns all contents for the surfaces. This will pass the loaded content\n\t * to <code>Screen.load</code> with all information you\n\t * need to fulfill the surfaces. Lifecycle.\n\t * @param {!string=} path The requested path.\n\t * @return {!CancellablePromise} This can return a string representing the\n\t * contents of the surfaces or a promise, which will pause the navigation\n\t * until it is resolved. This is useful for loading async content.\n\t */\n\tload() {\n\t\tconsole.log('Screen [' + this + '] load');\n\t\treturn CancellablePromise.resolve();\n\t}\n\n\t/**\n\t * Makes the id for the screen.\n\t * @param {!string} id The screen id the content belongs too.\n\t * @return {string}\n\t * @private\n\t */\n\tmakeId_(id) {\n\t\treturn 'screen_' + id;\n\t}\n\n\t/**\n\t * Sets the screen id.\n\t * @param {!string} id\n\t */\n\tsetId(id) {\n\t\tthis.id = id;\n\t}\n\n\t/**\n\t * Sets the screen title.\n\t * @param {?string=} title\n\t */\n\tsetTitle(title) {\n\t\tthis.title = title;\n\t}\n\n\t/**\n\t * @return {string}\n\t */\n\ttoString() {\n\t\treturn this.id;\n\t}\n\n}\n\n/**\n * @param {*} object\n * @return {boolean} Whether a given instance implements\n * <code>Screen</code>.\n */\nScreen.isImplementedBy = function(object) {\n\treturn object instanceof Screen;\n};\n\nexport default Screen;\n","'use strict';\n\nimport globals from '../globals/globals';\nimport { core, Disposable } from 'metal';\nimport dom from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\n\nclass Surface extends Disposable {\n\n\t/**\n\t * Surface class representing the references to elements on the page that\n\t * can potentially be updated by <code>App</code>.\n\t * @param {string} id\n\t * @constructor\n\t */\n\tconstructor(id) {\n\t\tsuper();\n\n\t\tif (!id) {\n\t\t\tthrow new Error('Surface element id not specified. A surface element requires a valid id.');\n\t\t}\n\n\t\t/**\n\t\t * Holds the active child element.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.activeChild = null;\n\n\t\t/**\n\t\t * Holds the default child element.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.defaultChild = null;\n\n\t\t/**\n\t\t * Holds the element with the specified surface id, if not found creates a\n\t\t * new element with the specified id.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.element = null;\n\n\t\t/**\n\t\t * Holds the surface id.\n\t\t * @type {String}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.id = id;\n\n\t\t/**\n\t\t * Holds the default transitionFn for the surfaces.\n\t\t * @param {?Element=} from The visible surface element.\n\t\t * @param {?Element=} to The surface element to be flipped.\n\t\t * @default null\n\t\t */\n\t\tthis.transitionFn = null;\n\n\t\tthis.defaultChild = this.getChild(Surface.DEFAULT);\n\t\tthis.maybeWrapContentAsDefault_();\n\t\tthis.activeChild = this.defaultChild;\n\t}\n\n\t/**\n\t * Adds screen content to a surface. If content hasn't been passed, see if\n\t * an element exists in the DOM that matches the id. By convention, the\n\t * element should already be nested in the right element and should have an\n\t * id that is a concatentation of the surface id + '-' + the screen id.\n\t * @param {!string} screenId The screen id the content belongs too.\n\t * @param {?string|Element=} opt_content The string content or element to\n\t * add be added as surface content.\n\t * @return {Element}\n\t */\n\taddContent(screenId, opt_content) {\n\t\tvar child = this.defaultChild;\n\n\t\tif (core.isDefAndNotNull(opt_content)) {\n\t\t\tchild = this.getChild(screenId);\n\t\t\tif (child) {\n\t\t\t\tdom.removeChildren(child);\n\t\t\t} else {\n\t\t\t\tchild = this.createChild(screenId);\n\t\t\t\tthis.transition(child, null);\n\t\t\t}\n\t\t\tdom.append(child, opt_content);\n\t\t}\n\n\t\tvar element = this.getElement();\n\n\t\tif (element && child) {\n\t\t\tdom.append(element, child);\n\t\t}\n\n\t\treturn child;\n\t}\n\n\t/**\n\t * Creates child node for the surface.\n\t * @param {!string} screenId The screen id.\n\t * @return {Element}\n\t */\n\tcreateChild(screenId) {\n\t\tvar child = globals.document.createElement('div');\n\t\tchild.setAttribute('id', this.makeId_(screenId));\n\t\treturn child;\n\t}\n\n\t/**\n\t * Gets child node of the surface.\n\t * @param {!string} screenId The screen id.\n\t * @return {?Element}\n\t */\n\tgetChild(screenId) {\n\t\treturn globals.document.getElementById(this.makeId_(screenId));\n\t}\n\n\t/**\n\t * Gets the surface element from element, and sets it to the el property of\n\t * the current instance.\n\t * <code>this.element</code> will be used.\n\t * @return {?Element} The current surface element.\n\t */\n\tgetElement() {\n\t\tif (this.element) {\n\t\t\treturn this.element;\n\t\t}\n\t\tthis.element = globals.document.getElementById(this.id);\n\t\treturn this.element;\n\t}\n\n\t/**\n\t * Gets the surface id.\n\t * @return {String}\n\t */\n\tgetId() {\n\t\treturn this.id;\n\t}\n\n\t/**\n\t * Gets the surface transition function.\n\t * See <code>Surface.defaultTransition</code>.\n\t * @return {?Function=} The transition function.\n\t */\n\tgetTransitionFn() {\n\t\treturn this.transitionFn;\n\t}\n\n\t/**\n\t * Makes the id for the element that holds content for a screen.\n\t * @param {!string} screenId The screen id the content belongs too.\n\t * @return {String}\n\t * @private\n\t */\n\tmakeId_(screenId) {\n\t\treturn this.id + '-' + screenId;\n\t}\n\n\t/**\n\t * If default child is missing, wraps surface content as default child. If\n\t * surface have static content, make sure to place a\n\t * <code>surfaceId-default</code> element inside surface, only contents\n\t * inside the default child will be replaced by navigation.\n\t */\n\tmaybeWrapContentAsDefault_() {\n\t\tvar element = this.getElement();\n\t\tif (element && !this.defaultChild) {\n\t\t\tvar fragment = globals.document.createDocumentFragment();\n\t\t\twhile (element.firstChild) {\n\t\t\t\tfragment.appendChild(element.firstChild);\n\t\t\t}\n\t\t\tthis.defaultChild = this.addContent(Surface.DEFAULT, fragment);\n\t\t\tthis.transition(null, this.defaultChild);\n\t\t}\n\t}\n\n\t/**\n\t * Sets the surface id.\n\t * @param {!string} id\n\t */\n\tsetId(id) {\n\t\tthis.id = id;\n\t}\n\n\t/**\n\t * Sets the surface transition function.\n\t * See <code>Surface.defaultTransition</code>.\n\t * @param {?Function=} transitionFn The transition function.\n\t */\n\tsetTransitionFn(transitionFn) {\n\t\tthis.transitionFn = transitionFn;\n\t}\n\n\t/**\n\t * Shows screen content from a surface.\n\t * @param {String} screenId The screen id to show.\n\t * @return {CancellablePromise} Pauses the navigation until it is resolved.\n\t */\n\tshow(screenId) {\n\t\tvar from = this.activeChild;\n\t\tvar to = this.getChild(screenId);\n\t\tif (!to) {\n\t\t\tto = this.defaultChild;\n\t\t}\n\t\tthis.activeChild = to;\n\t\treturn this.transition(from, to).thenAlways(() => {\n\t\t\tif (from && from !== to) {\n\t\t\t\tdom.exitDocument(from);\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Removes screen content from a surface.\n\t * @param {!string} screenId The screen id to remove.\n\t */\n\tremove(screenId) {\n\t\tvar child = this.getChild(screenId);\n\t\tif (child) {\n\t\t\tdom.exitDocument(child);\n\t\t}\n\t}\n\n\t/**\n\t * @return {String}\n\t */\n\ttoString() {\n\t\treturn this.id;\n\t}\n\n\t/**\n\t * Invokes the transition function specified on <code>transition</code> attribute.\n\t * @param {?Element=} from\n\t * @param {?Element=} to\n\t * @return {?CancellablePromise=} This can return a promise, which will pause the\n\t * navigation until it is resolved.\n\t */\n\ttransition(from, to) {\n\t\tvar transitionFn = this.transitionFn || Surface.defaultTransition;\n\t\treturn CancellablePromise.resolve(transitionFn.call(this, from, to));\n\t}\n\n}\n\n/**\n * Holds the default surface name. Elements on the page must contain a child\n * element containing the default content, this element must be as following:\n *\n * Example:\n * <code>\n * <div id=\"mysurface\">\n * <div id=\"mysurface-default\">Default surface content.</div>\n * </div>\n * </code>\n *\n * The default content is relevant for the initial page content. When a\n * screen doesn't provide content for the surface the default content is\n * restored into the page.\n *\n * @type {!String}\n * @default default\n * @static\n */\nSurface.DEFAULT = 'default';\n\n/**\n * Holds the default transition for all surfaces. Each surface could have its\n * own transition.\n *\n * Example:\n *\n * <code>\n * surface.setTransitionFn(function(from, to) {\n * if (from) {\n * from.style.display = 'none';\n * from.classList.remove('flipped');\n * }\n * if (to) {\n * to.style.display = 'block';\n * to.classList.add('flipped');\n * }\n * return null;\n * });\n * </code>\n *\n * @param {?Element=} from The visible surface element.\n * @param {?Element=} to The surface element to be flipped.\n * @static\n */\nSurface.defaultTransition = function(from, to) {\n\tif (from) {\n\t\tfrom.style.display = 'none';\n\t\tfrom.classList.remove('flipped');\n\t}\n\tif (to) {\n\t\tto.style.display = 'block';\n\t\tto.classList.add('flipped');\n\t}\n};\n\nexport default Surface;\n","'use strict';\n\nimport { array, async, core } from 'metal';\nimport debounce from 'metal-debounce';\nimport dom from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\nimport { EventEmitter, EventHandler } from 'metal-events';\nimport utils from '../utils/utils';\nimport globals from '../globals/globals';\nimport Route from '../route/Route';\nimport Screen from '../screen/Screen';\nimport Surface from '../surface/Surface';\nimport Uri from 'metal-uri';\n\nclass App extends EventEmitter {\n\n\t/**\n\t * App class that handle routes and screens lifecycle.\n\t * @constructor\n\t * @extends {EventEmitter}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the active screen.\n\t\t * @type {?Screen}\n\t\t * @protected\n\t\t */\n\t\tthis.activeScreen = null;\n\n\t\t/**\n\t\t * Holds the active path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.activePath = null;\n\n\t\t/**\n\t\t * Allows prevent navigate from dom prevented event.\n\t\t * @type {boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.allowPreventNavigate = true;\n\n\t\t/**\n\t\t * Holds link base path.\n\t\t * @type {!string}\n\t\t * @default ''\n\t\t * @protected\n\t\t */\n\t\tthis.basePath = '';\n\n\t\t/**\n\t\t * Captures scroll position from scroll event.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.captureScrollPositionFromScrollEvent = true;\n\n\t\t/**\n\t\t * Holds the default page title.\n\t\t * @type {string}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.defaultTitle = globals.document.title;\n\n\t\t/**\n\t\t * Holds the form selector to define forms that are routed.\n\t\t * @type {!string}\n\t\t * @default form[enctype=\"multipart/form-data\"]:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.formSelector = 'form[enctype=\"multipart/form-data\"]:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the link selector to define links that are routed.\n\t\t * @type {!string}\n\t\t * @default a:not([data-senna-off])\n\t\t * @protected\n\t\t */\n\t\tthis.linkSelector = 'a:not([data-senna-off])';\n\n\t\t/**\n\t\t * Holds the loading css class.\n\t\t * @type {!string}\n\t\t * @default senna-loading\n\t\t * @protected\n\t\t */\n\t\tthis.loadingCssClass = 'senna-loading';\n\n\t\t/**\n\t\t * Using the History API to manage your URLs is awesome and, as it happens,\n\t\t * a crucial feature of good web apps. One of its downsides, however, is\n\t\t * that scroll positions are stored and then, more importantly, restored\n\t\t * whenever you traverse the history. This often means unsightly jumps as\n\t\t * the scroll position changes automatically, and especially so if your app\n\t\t * does transitions, or changes the contents of the page in any way.\n\t\t * Ultimately this leads to an horrible user experience. The good news is,\n\t\t * however, that there’s a potential fix: history.scrollRestoration.\n\t\t * https://developers.google.com/web/updates/2015/09/history-api-scroll-restoration\n\t\t * @type {boolean}\n\t\t * @protected\n\t\t */\n\t\tthis.nativeScrollRestorationSupported = ('scrollRestoration' in globals.window.history);\n\n\t\t/**\n\t\t * When set to true there is a pendingNavigate that has not yet been\n\t\t * resolved or rejected.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.isNavigationPending = false;\n\n\t\t/**\n\t\t * Holds a deferred with the current navigation.\n\t\t * @type {?CancellablePromise}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.pendingNavigate = null;\n\n\t\t/**\n\t\t * Holds the window horizontal scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollLeft = 0;\n\n\t\t/**\n\t\t * Holds the window vertical scroll position when the navigation using\n\t\t * back or forward happens to be restored after the surfaces are updated.\n\t\t * @type {!Number}\n\t\t * @default 0\n\t\t * @protected\n\t\t */\n\t\tthis.popstateScrollTop = 0;\n\n\t\t/**\n\t\t * Holds the redirect path containing the query parameters.\n\t\t * @type {?string}\n\t\t * @protected\n\t\t */\n\t\tthis.redirectPath = null;\n\n\t\t/**\n\t\t * Holds the screen routes configuration.\n\t\t * @type {?Array}\n\t\t * @default []\n\t\t * @protected\n\t\t */\n\t\tthis.routes = [];\n\n\t\t/**\n\t\t * Maps the screen instances by the url containing the parameters.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.screens = {};\n\n\t\t/**\n\t\t * When set to true the first erroneous popstate fired on page load will be\n\t\t * ignored, only if <code>globals.window.history.state</code> is also\n\t\t * <code>null</code>.\n\t\t * @type {boolean}\n\t\t * @default false\n\t\t * @protected\n\t\t */\n\t\tthis.skipLoadPopstate = false;\n\n\t\t/**\n\t\t * Maps that index the surfaces instances by the surface id.\n\t\t * @type {?Object}\n\t\t * @default {}\n\t\t * @protected\n\t\t */\n\t\tthis.surfaces = {};\n\n\t\t/**\n\t\t * When set to true, moves the scroll position after popstate, or to the\n\t\t * top of the viewport for new navigation. If false, the browser will\n\t\t * take care of scroll restoration.\n\t\t * @type {!boolean}\n\t\t * @default true\n\t\t * @protected\n\t\t */\n\t\tthis.updateScrollPosition = true;\n\n\t\tthis.appEventHandlers_ = new EventHandler();\n\n\t\tthis.appEventHandlers_.add(\n\t\t\tdom.on(globals.window, 'scroll', debounce(this.onScroll_.bind(this), 100)),\n\t\t\tdom.on(globals.window, 'load', this.onLoad_.bind(this)),\n\t\t\tdom.on(globals.window, 'popstate', this.onPopstate_.bind(this))\n\t\t);\n\n\t\tthis.on('startNavigate', this.onStartNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigate_);\n\t\tthis.on('beforeNavigate', this.onBeforeNavigateDefault_, true);\n\n\t\tthis.setLinkSelector(this.linkSelector);\n\t\tthis.setFormSelector(this.formSelector);\n\t}\n\n\t/**\n\t * Adds one or more screens to the application.\n\t *\n\t * Example:\n\t *\n\t * <code>\n\t * app.addRoutes({ path: '/foo', handler: FooScreen });\n\t * or\n\t * app.addRoutes([{ path: '/foo', handler: function(route) { return new FooScreen(); } }]);\n\t * </code>\n\t *\n\t * @param {Object} or {Array} routes Single object or an array of object.\n\t * Each object should contain <code>path</code> and <code>screen</code>.\n\t * The <code>path</code> should be a string or a regex that maps the\n\t * navigation route to a screen class definition (not an instance), e.g:\n\t * <code>{ path: \"/home:param1\", handler: MyScreen }</code>\n\t * <code>{ path: /foo.+/, handler: MyScreen }</code>\n\t * @chainable\n\t */\n\taddRoutes(routes) {\n\t\tif (!Array.isArray(routes)) {\n\t\t\troutes = [routes];\n\t\t}\n\t\troutes.forEach((route) => {\n\t\t\tif (!(route instanceof Route)) {\n\t\t\t\troute = new Route(route.path, route.handler);\n\t\t\t}\n\t\t\tthis.routes.push(route);\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Adds one or more surfaces to the application.\n\t * @param {Surface|String|Array.<Surface|String>} surfaces\n\t * Surface element id or surface instance. You can also pass an Array\n\t * whichcontains surface instances or id. In case of ID, these should be\n\t * the id of surface element.\n\t * @chainable\n\t */\n\taddSurfaces(surfaces) {\n\t\tif (!Array.isArray(surfaces)) {\n\t\t\tsurfaces = [surfaces];\n\t\t}\n\t\tsurfaces.forEach((surface) => {\n\t\t\tif (core.isString(surface)) {\n\t\t\t\tsurface = new Surface(surface);\n\t\t\t}\n\t\t\tthis.surfaces[surface.getId()] = surface;\n\t\t});\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns if can navigate to path.\n\t * @param {!string} url\n\t * @return {boolean}\n\t */\n\tcanNavigate(url) {\n\t\tvar path = utils.getUrlPath(url);\n\t\tvar uri = new Uri(url);\n\n\t\tif (!this.isLinkSameOrigin_(uri.getHostname())) {\n\t\t\tconsole.log('Offsite link clicked');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.isSameBasePath_(path)) {\n\t\t\tconsole.log('Link clicked outside app\\'s base path');\n\t\t\treturn false;\n\t\t}\n\t\tif (!this.findRoute(path)) {\n\t\t\tconsole.log('No route for ' + path);\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Clear screens cache.\n\t * @chainable\n\t */\n\tclearScreensCache() {\n\t\tObject.keys(this.screens).forEach((path) => {\n\t\t\tif (path === this.activePath) {\n\t\t\t\tthis.activeScreen.clearCache();\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Retrieves or create a screen instance to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {Screen}\n\t */\n\tcreateScreenInstance(path, route) {\n\t\tif (!this.pendingNavigate && path === this.activePath) {\n\t\t\tconsole.log('Already at destination, refresh navigation');\n\t\t\treturn this.activeScreen;\n\t\t}\n\t\t/* jshint newcap: false */\n\t\tvar screen = this.screens[path];\n\t\tif (!screen) {\n\t\t\tvar handler = route.getHandler();\n\t\t\tif (handler === Screen || Screen.isImplementedBy(handler.prototype)) {\n\t\t\t\tscreen = new handler();\n\t\t\t} else {\n\t\t\t\tscreen = handler(route) || new Screen();\n\t\t\t}\n\t\t\tconsole.log('Create screen for [' + path + '] [' + screen + ']');\n\t\t}\n\t\treturn screen;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisposeInternal() {\n\t\tif (this.activeScreen) {\n\t\t\tthis.removeScreen(this.activePath);\n\t\t}\n\t\tthis.clearScreensCache();\n\t\tthis.formEventHandler_.removeListener();\n\t\tthis.linkEventHandler_.removeListener();\n\t\tthis.appEventHandlers_.removeAllListeners();\n\t\tsuper.disposeInternal();\n\t}\n\n\t/**\n\t * Dispatches to the first route handler that matches the current path, if\n\t * any.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdispatch() {\n\t\treturn this.navigate(utils.getCurrentBrowserPath(), true);\n\t}\n\n\t/**\n\t * Starts navigation to a path.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tdoNavigate_(path, opt_replaceHistory) {\n\t\tif (this.activeScreen && this.activeScreen.beforeDeactivate()) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('Cancelled by active screen'));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tvar route = this.findRoute(path);\n\t\tif (!route) {\n\t\t\tthis.pendingNavigate = CancellablePromise.reject(new CancellablePromise.CancellationError('No route for ' + path));\n\t\t\treturn this.pendingNavigate;\n\t\t}\n\n\t\tconsole.log('Navigate to [' + path + ']');\n\n\t\tthis.stopPendingNavigate_();\n\t\tthis.isNavigationPending = true;\n\n\t\tvar nextScreen = this.createScreenInstance(path, route);\n\n\t\treturn nextScreen.load(path)\n\t\t\t.then(() => {\n\t\t\t\tif (this.activeScreen) {\n\t\t\t\t\tthis.activeScreen.deactivate();\n\t\t\t\t}\n\t\t\t\tthis.prepareNavigateHistory_(path, nextScreen, opt_replaceHistory);\n\t\t\t\tthis.prepareNavigateSurfaces_(\n\t\t\t\t\tnextScreen,\n\t\t\t\t\tthis.surfaces,\n\t\t\t\t\tthis.extractParams(route, path)\n\t\t\t\t);\n\t\t\t})\n\t\t\t.then(() => nextScreen.evaluateStyles(this.surfaces))\n\t\t\t.then(() => nextScreen.flip(this.surfaces))\n\t\t\t.then(() => nextScreen.evaluateScripts(this.surfaces))\n\t\t\t.then(() => this.syncScrollPositionSyncThenAsync_())\n\t\t\t.then(() => this.finalizeNavigate_(path, nextScreen))\n\t\t\t.catch((reason) => {\n\t\t\t\tthis.isNavigationPending = false;\n\t\t\t\tthis.handleNavigateError_(path, nextScreen, reason);\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * Extracts params according to the given path and route.\n\t * @param {!Route} route\n\t * @param {string} path\n\t * @param {!Object}\n\t */\n\textractParams(route, path) {\n\t\treturn route.extractParams(this.getRoutePath(path));\n\t}\n\n\t/**\n\t * Finalizes a screen navigation.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @protected\n\t */\n\tfinalizeNavigate_(path, nextScreen) {\n\t\tnextScreen.activate();\n\n\t\tif (this.activeScreen && !this.activeScreen.isCacheable()) {\n\t\t\tif (this.activeScreen !== nextScreen) {\n\t\t\t\tthis.removeScreen(this.activePath);\n\t\t\t}\n\t\t}\n\n\t\tthis.activePath = path;\n\t\tthis.activeScreen = nextScreen;\n\t\tthis.screens[path] = nextScreen;\n\t\tthis.isNavigationPending = false;\n\t\tthis.pendingNavigate = null;\n\t\tglobals.capturedFormElement = null;\n\t\tconsole.log('Navigation done');\n\t}\n\n\t/**\n\t * Finds a route for the test path. Returns true if matches has a route,\n\t * otherwise returns null.\n\t * @param {!string} path Path containing the querystring part.\n\t * @return {?Object} Route handler if match any or <code>null</code> if the\n\t * path is the same as the current url and the path contains a fragment.\n\t */\n\tfindRoute(path) {\n\t\t// Prevents navigation if it's a hash change on the same url.\n\t\tif ((path.lastIndexOf('#') > -1) && utils.isCurrentBrowserPath(path)) {\n\t\t\treturn null;\n\t\t}\n\n\t\tpath = this.getRoutePath(path);\n\t\tfor (var i = 0; i < this.routes.length; i++) {\n\t\t\tvar route = this.routes[i];\n\t\t\tif (route.matchesPath(path)) {\n\t\t\t\treturn route;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets allow prevent navigate.\n\t * @return {boolean}\n\t */\n\tgetAllowPreventNavigate() {\n\t\treturn this.allowPreventNavigate;\n\t}\n\n\t/**\n\t * Gets link base path.\n\t * @return {!string}\n\t */\n\tgetBasePath() {\n\t\treturn this.basePath;\n\t}\n\n\t/**\n\t * Gets the default page title.\n\t * @return {string} defaultTitle\n\t */\n\tgetDefaultTitle() {\n\t\treturn this.defaultTitle;\n\t}\n\n\t/**\n\t * Gets the form selector.\n\t * @return {!string}\n\t */\n\tgetFormSelector() {\n\t\treturn this.formSelector;\n\t}\n\n\t/**\n\t * Gets the link selector.\n\t * @return {!string}\n\t */\n\tgetLinkSelector() {\n\t\treturn this.linkSelector;\n\t}\n\n\t/**\n\t * Gets the loading css class.\n\t * @return {!string}\n\t */\n\tgetLoadingCssClass() {\n\t\treturn this.loadingCssClass;\n\t}\n\n\t/**\n\t * Returns the given path formatted to be matched by a route. This will, for\n\t * example, remove the base path from it.\n\t * @param {string} path\n\t * @return {string}\n\t */\n\tgetRoutePath(path) {\n\t\tpath = utils.getUrlPathWithoutHash(path);\n\t\t// Makes sure that the path substring will be in the expected format\n\t\t// (that is, will end with a \"/\"), even after removing the base path.\n\t\treturn utils.getUrlPathWithoutHash(path.substr(this.basePath.length));\n\t}\n\n\t/**\n\t * Gets the update scroll position value.\n\t * @return {boolean}\n\t */\n\tgetUpdateScrollPosition() {\n\t\treturn this.updateScrollPosition;\n\t}\n\n\t/**\n\t * Handle navigation error.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {!Error} error\n\t * @protected\n\t */\n\thandleNavigateError_(path, nextScreen, err) {\n\t\tconsole.log('Navigation error for [' + nextScreen + '] (' + err + ')');\n\t\tif (!utils.isCurrentBrowserPath(path)) {\n\t\t\tif (this.isNavigationPending && this.pendingNavigate) {\n\t\t\t\tthis.pendingNavigate.thenAlways(() => this.removeScreen(path), this);\n\t\t\t} else {\n\t\t\t\tthis.removeScreen(path);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if app has routes.\n\t * @return {boolean}\n\t */\n\thasRoutes() {\n\t\treturn this.routes.length > 0;\n\t}\n\n\t/**\n\t * Tests if hostname is an offsite link.\n\t * @param {!string} hostname Link hostname to compare with\n\t * <code>globals.window.location.hostname</code>.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisLinkSameOrigin_(hostname) {\n\t\treturn hostname === globals.window.location.hostname;\n\t}\n\n\t/**\n\t * Tests if link element has the same app's base path.\n\t * @param {!string} path Link path containing the querystring part.\n\t * @return {boolean}\n\t * @protected\n\t */\n\tisSameBasePath_(path) {\n\t\treturn path.indexOf(this.basePath) === 0;\n\t}\n\n\t/**\n\t * Lock the document scroll in order to avoid the browser native back and\n\t * forward navigation to change the scroll position. In the end of\n\t * navigation lifecycle scroll is repositioned.\n\t * @protected\n\t */\n\tlockHistoryScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\t\t// Browsers are inconsistent when re-positioning the scroll history on\n\t\t// popstate. At some browsers, history scroll happens before popstate, then\n\t\t// lock the scroll on the last known position as soon as possible after the\n\t\t// current JS execution context and capture the current value. Some others,\n\t\t// history scroll happens after popstate, in this case, we bind an once\n\t\t// scroll event to lock the las known position. Lastly, the previous two\n\t\t// behaviors can happen even on the same browser, hence the race will decide\n\t\t// the winner.\n\t\tvar winner = false;\n\t\tvar switchScrollPositionRace = function() {\n\t\t\tglobals.document.removeEventListener('scroll', switchScrollPositionRace, false);\n\t\t\tif (!winner) {\n\t\t\t\tglobals.window.scrollTo(state.scrollLeft, state.scrollTop);\n\t\t\t\twinner = true;\n\t\t\t}\n\t\t};\n\t\tasync.nextTick(switchScrollPositionRace);\n\t\tglobals.document.addEventListener('scroll', switchScrollPositionRace, false);\n\t}\n\n\t/**\n\t * If supported by the browser, disables native scroll restoration and\n\t * stores current value.\n\t */\n\tmaybeDisableNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported) {\n\t\t\tthis.nativeScrollRestoration_ = globals.window.history.scrollRestoration;\n\t\t\tglobals.window.history.scrollRestoration = 'manual';\n\t\t}\n\t}\n\n\t/**\n\t * Maybe navigate to a path.\n\t * @param {string} href Information about the link's href.\n\t * @param {Event} event Dom event that initiated the navigation.\n\t */\n\tmaybeNavigate_(href, event) {\n\t\tif (!this.canNavigate(href)) {\n\t\t\treturn;\n\t\t}\n\n\t\tglobals.capturedFormElement = event.capturedFormElement;\n\n\t\tvar navigateFailed = false;\n\t\ttry {\n\t\t\tthis.navigate(utils.getUrlPath(href));\n\t\t} catch (err) {\n\t\t\t// Do not prevent link navigation in case some synchronous error occurs\n\t\t\tnavigateFailed = true;\n\t\t}\n\n\t\tif (!navigateFailed) {\n\t\t\tevent.preventDefault();\n\t\t}\n\t}\n\n\t/**\n\t * Maybe reposition scroll to hashed anchor.\n\t */\n\tmaybeRepositionScrollToHashedAnchor() {\n\t\tvar hash = globals.window.location.hash;\n\t\tif (hash) {\n\t\t\tvar anchorElement = globals.document.getElementById(hash.substring(1));\n\t\t\tif (anchorElement) {\n\t\t\t\tglobals.window.scrollTo(anchorElement.offsetLeft, anchorElement.offsetTop);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * If supported by the browser, restores native scroll restoration to the\n\t * value captured by `maybeDisableNativeScrollRestoration`.\n\t */\n\tmaybeRestoreNativeScrollRestoration() {\n\t\tif (this.nativeScrollRestorationSupported && this.nativeScrollRestoration_) {\n\t\t\tglobals.window.history.scrollRestoration = this.nativeScrollRestoration_;\n\t\t}\n\t}\n\n\t/**\n\t * Navigates to the specified path if there is a route handler that matches.\n\t * @param {!string} path Path to navigate containing the base path.\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tnavigate(path, opt_replaceHistory) {\n\t\tif (!utils.isHtml5HistorySupported()) {\n\t\t\tthrow new Error('HTML5 History is not supported. Senna will not intercept navigation.');\n\t\t}\n\n\t\t// When reloading the same path do replaceState instead of pushState to\n\t\t// avoid polluting history with states with the same path.\n\t\tif (path === this.activePath) {\n\t\t\topt_replaceHistory = true;\n\t\t}\n\n\t\tthis.emit('beforeNavigate', {\n\t\t\tpath: path,\n\t\t\treplaceHistory: !!opt_replaceHistory\n\t\t});\n\n\t\treturn this.pendingNavigate;\n\t}\n\n\t/**\n\t * Befores navigation to a path.\n\t * @param {!Event} event Event facade containing <code>path</code> and\n\t * <code>replaceHistory</code>.\n\t * @protected\n\t */\n\tonBeforeNavigate_(event) {\n\t\tif (globals.capturedFormElement) {\n\t\t\tevent.form = globals.capturedFormElement;\n\t\t}\n\t}\n\n\t/**\n\t * Befores navigation to a path. Runs after external listeners.\n\t * @param {!Event} event Event facade containing <code>path</code> and\n\t * <code>replaceHistory</code>.\n\t * @protected\n\t */\n\tonBeforeNavigateDefault_(event) {\n\t\tif (this.pendingNavigate) {\n\t\t\tif (this.pendingNavigate.path === event.path) {\n\t\t\t\tconsole.log('Waiting...');\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\n\t\tthis.emit('startNavigate', {\n\t\t\tform: event.form,\n\t\t\tpath: event.path,\n\t\t\treplaceHistory: event.replaceHistory\n\t\t});\n\t}\n\n\t/**\n\t * Intercepts document clicks and test link elements in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocClickDelegate_(event) {\n\t\tif (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey || event.button) {\n\t\t\tconsole.log('Navigate aborted, invalid mouse button or modifier key pressed.');\n\t\t\treturn;\n\t\t}\n\t\tthis.maybeNavigate_(event.delegateTarget.href, event);\n\t}\n\n\t/**\n\t * Intercepts document form submits and test action path in order to decide\n\t * whether Surface app can navigate.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonDocSubmitDelegate_(event) {\n\t\tvar form = event.delegateTarget;\n\t\tif (form.method === 'get') {\n\t\t\tconsole.log('GET method not supported');\n\t\t\treturn;\n\t\t}\n\t\tevent.capturedFormElement = form;\n\t\tthis.maybeNavigate_(form.action, event);\n\t}\n\n\t/**\n\t * Listens to the window's load event in order to avoid issues with some browsers\n\t * that trigger popstate calls on the first load. For more information see\n\t * http://stackoverflow.com/questions/6421769/popstate-on-pages-load-in-chrome.\n\t * @protected\n\t */\n\tonLoad_() {\n\t\tthis.skipLoadPopstate = true;\n\t\tsetTimeout(() => {\n\t\t\t// The timeout ensures that popstate events will be unblocked right\n\t\t\t// after the load event occured, but not in the same event-loop cycle.\n\t\t\tthis.skipLoadPopstate = false;\n\t\t}, 0);\n\t\t// Try to reposition scroll to the hashed anchor when page loads.\n\t\tthis.maybeRepositionScrollToHashedAnchor();\n\t}\n\n\t/**\n\t * Handles browser history changes and fires app's navigation if the state\n\t * belows to us. If we detect a popstate and the state is <code>null</code>,\n\t * assume it is navigating to an external page or to a page we don't have\n\t * route, then <code>globals.window.location.reload()</code> is invoked in order to\n\t * reload the content to the current url.\n\t * @param {!Event} event Event facade\n\t * @protected\n\t */\n\tonPopstate_(event) {\n\t\tif (this.skipLoadPopstate) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar state = event.state;\n\n\t\tif (!state) {\n\t\t\tif (globals.window.location.hash) {\n\t\t\t\t// If senna is on an redirect path and a hash popstate happens\n\t\t\t\t// to a different url, reload the browser. This behavior doesn't\n\t\t\t\t// require senna to route hashed links and is closer to native\n\t\t\t\t// browser behavior.\n\t\t\t\tif (this.redirectPath && !utils.isCurrentBrowserPath(this.redirectPath)) {\n\t\t\t\t\tthis.reloadPage();\n\t\t\t\t}\n\t\t\t\t// Always try to reposition scroll to the hashed anchor when\n\t\t\t\t// hash popstate happens.\n\t\t\t\tthis.maybeRepositionScrollToHashedAnchor();\n\t\t\t} else {\n\t\t\t\tthis.reloadPage();\n\t\t\t}\n\t\t\treturn;\n\t\t}\n\n\t\tif (state.senna) {\n\t\t\tconsole.log('History navigation to [' + state.path + ']');\n\t\t\tthis.popstateScrollTop = state.scrollTop;\n\t\t\tthis.popstateScrollLeft = state.scrollLeft;\n\t\t\tif (!this.nativeScrollRestorationSupported) {\n\t\t\t\tthis.lockHistoryScrollPosition_();\n\t\t\t}\n\t\t\tthis.navigate(state.path, true);\n\t\t}\n\t}\n\n\t/**\n\t * Listens document scroll changes in order to capture the possible lock\n\t * scroll position for history scrolling.\n\t * @protected\n\t */\n\tonScroll_() {\n\t\tif (this.captureScrollPositionFromScrollEvent) {\n\t\t\tthis.saveHistoryCurrentPageScrollPosition_();\n\t\t}\n\t}\n\n\t/**\n\t * Starts navigation to a path.\n\t * @param {!Event} event Event facade containing <code>path</code> and\n\t * <code>replaceHistory</code>.\n\t * @protected\n\t */\n\tonStartNavigate_(event) {\n\t\tthis.maybeDisableNativeScrollRestoration();\n\t\tthis.captureScrollPositionFromScrollEvent = false;\n\t\tdom.addClasses(globals.document.documentElement, this.loadingCssClass);\n\n\t\tvar endNavigatePayload = {\n\t\t\tform: event.form,\n\t\t\tpath: event.path\n\t\t};\n\n\t\tthis.pendingNavigate = this.doNavigate_(event.path, event.replaceHistory)\n\t\t\t.catch((reason) => {\n\t\t\t\tendNavigatePayload.error = reason;\n\t\t\t\tthrow reason;\n\t\t\t})\n\t\t\t.thenAlways(() => {\n\t\t\t\tif (!this.pendingNavigate) {\n\t\t\t\t\tdom.removeClasses(globals.document.documentElement, this.loadingCssClass);\n\t\t\t\t\tthis.maybeRestoreNativeScrollRestoration();\n\t\t\t\t\tthis.captureScrollPositionFromScrollEvent = true;\n\t\t\t\t}\n\t\t\t\tthis.emit('endNavigate', endNavigatePayload);\n\t\t\t});\n\n\t\tthis.pendingNavigate.path = event.path;\n\t}\n\n\t/**\n\t * Prefetches the specified path if there is a route handler that matches.\n\t * @param {!string} path Path to navigate containing the base path.\n\t * @return {CancellablePromise} Returns a pending request cancellable promise.\n\t */\n\tprefetch(path) {\n\t\tvar route = this.findRoute(path);\n\t\tif (!route) {\n\t\t\treturn CancellablePromise.reject(new CancellablePromise.CancellationError('No route for ' + path));\n\t\t}\n\n\t\tconsole.log('Prefetching [' + path + ']');\n\n\t\tvar nextScreen = this.createScreenInstance(path, route);\n\n\t\treturn nextScreen.load(path)\n\t\t\t.then(() => this.screens[path] = nextScreen)\n\t\t\t.catch((reason) => {\n\t\t\t\tthis.handleNavigateError_(path, nextScreen, reason);\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * Prepares screen flip. Updates history state and surfaces content.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!Screen} nextScreen\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t */\n\tprepareNavigateHistory_(path, nextScreen, opt_replaceHistory) {\n\t\tvar title = nextScreen.getTitle();\n\t\tif (!core.isString(title)) {\n\t\t\ttitle = this.getDefaultTitle();\n\t\t}\n\t\tvar redirectPath = nextScreen.beforeUpdateHistoryPath(path);\n\t\tvar historyState = {\n\t\t\tform: core.isDefAndNotNull(globals.capturedFormElement),\n\t\t\tredirectPath: redirectPath,\n\t\t\tpath: path,\n\t\t\tsenna: true,\n\t\t\tscrollTop: 0,\n\t\t\tscrollLeft: 0\n\t\t};\n\t\tif (opt_replaceHistory) {\n\t\t\thistoryState.scrollTop = this.popstateScrollTop;\n\t\t\thistoryState.scrollLeft = this.popstateScrollLeft;\n\t\t}\n\t\tthis.updateHistory_(title, redirectPath, nextScreen.beforeUpdateHistoryState(historyState), opt_replaceHistory);\n\t\tthis.redirectPath = redirectPath;\n\t}\n\n\t/**\n\t * Prepares screen flip. Updates history state and surfaces content.\n\t * @param {!Screen} nextScreen\n\t * @param {!Object} surfaces Map of surfaces to flip keyed by surface id.\n\t * @param {!Object} params Params extracted from the current path.\n\t */\n\tprepareNavigateSurfaces_(nextScreen, surfaces, params) {\n\t\tObject.keys(surfaces).forEach((id) => {\n\t\t\tvar surfaceContent = nextScreen.getSurfaceContent(id, params);\n\t\t\tsurfaces[id].addContent(nextScreen.getId(), surfaceContent);\n\t\t\tconsole.log('Screen [' + nextScreen.getId() + '] add content to surface ' +\n\t\t\t\t'[' + surfaces[id] + '] [' + (core.isDefAndNotNull(surfaceContent) ? '...' : 'empty') + ']');\n\t\t});\n\t}\n\n\t/**\n\t * Reloads the page by performing `window.location.reload()`.\n\t */\n\treloadPage() {\n\t\tglobals.window.location.reload();\n\t}\n\n\t/**\n\t * Removes route instance from app routes.\n\t * @param {Route} route\n\t * @return {boolean} True if an element was removed.\n\t */\n\tremoveRoute(route) {\n\t\treturn array.remove(this.routes, route);\n\t}\n\n\t/**\n\t * Removes a screen.\n\t * @param {!string} path Path containing the querystring part.\n\t */\n\tremoveScreen(path) {\n\t\tvar screen = this.screens[path];\n\t\tif (screen) {\n\t\t\tObject.keys(this.surfaces).forEach((surfaceId) => this.surfaces[surfaceId].remove(screen.getId()));\n\t\t\tscreen.dispose();\n\t\t\tdelete this.screens[path];\n\t\t}\n\t}\n\n\t/**\n\t * Saves scroll position from page offset into history state.\n\t */\n\tsaveHistoryCurrentPageScrollPosition_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (state && state.senna) {\n\t\t\tstate.scrollTop = globals.window.pageYOffset;\n\t\t\tstate.scrollLeft = globals.window.pageXOffset;\n\t\t\tglobals.window.history.replaceState(state, null, null);\n\t\t}\n\t}\n\n\t/**\n\t * Sets allow prevent navigate.\n\t * @param {boolean} allowPreventNavigate\n\t */\n\tsetAllowPreventNavigate(allowPreventNavigate) {\n\t\tthis.allowPreventNavigate = allowPreventNavigate;\n\t}\n\n\t/**\n\t * Sets link base path.\n\t * @param {!string} path\n\t */\n\tsetBasePath(basePath) {\n\t\tthis.basePath = basePath;\n\t}\n\n\t/**\n\t * Sets the default page title.\n\t * @param {string} defaultTitle\n\t */\n\tsetDefaultTitle(defaultTitle) {\n\t\tthis.defaultTitle = defaultTitle;\n\t}\n\n\t/**\n\t * Sets the form selector.\n\t * @param {!string} formSelector\n\t */\n\tsetFormSelector(formSelector) {\n\t\tthis.formSelector = formSelector;\n\t\tif (this.formEventHandler_) {\n\t\t\tthis.formEventHandler_.removeListener();\n\t\t}\n\t\tthis.formEventHandler_ = dom.delegate(document, 'submit', this.formSelector, this.onDocSubmitDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the link selector.\n\t * @param {!string} linkSelector\n\t */\n\tsetLinkSelector(linkSelector) {\n\t\tthis.linkSelector = linkSelector;\n\t\tif (this.linkEventHandler_) {\n\t\t\tthis.linkEventHandler_.removeListener();\n\t\t}\n\t\tthis.linkEventHandler_ = dom.delegate(document, 'click', this.linkSelector, this.onDocClickDelegate_.bind(this), this.allowPreventNavigate);\n\t}\n\n\t/**\n\t * Sets the loading css class.\n\t * @param {!string} loadingCssClass\n\t */\n\tsetLoadingCssClass(loadingCssClass) {\n\t\tthis.loadingCssClass = loadingCssClass;\n\t}\n\n\t/**\n\t * Sets the update scroll position value.\n\t * @param {boolean} updateScrollPosition\n\t */\n\tsetUpdateScrollPosition(updateScrollPosition) {\n\t\tthis.updateScrollPosition = updateScrollPosition;\n\t}\n\n\t/**\n\t * Cancels pending navigate with <code>Cancel pending navigation</code> error.\n\t * @protected\n\t */\n\tstopPendingNavigate_() {\n\t\tif (this.pendingNavigate) {\n\t\t\tthis.pendingNavigate.cancel('Cancel pending navigation');\n\t\t\tthis.pendingNavigate = null;\n\t\t}\n\t}\n\n\t/**\n\t * Sync document scroll position twice, the first one synchronous and then\n\t * one inside <code>async.nextTick</code>. Relevant to browsers that fires\n\t * scroll restoration asynchronously after popstate.\n\t * @protected\n\t * @return {?CancellablePromise=}\n\t */\n\tsyncScrollPositionSyncThenAsync_() {\n\t\tvar state = globals.window.history.state;\n\t\tif (!state) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar scrollTop = state.scrollTop;\n\t\tvar scrollLeft = state.scrollLeft;\n\n\t\tvar sync = () => {\n\t\t\tif (this.updateScrollPosition) {\n\t\t\t\tglobals.window.scrollTo(scrollLeft, scrollTop);\n\t\t\t}\n\t\t};\n\n\t\treturn new CancellablePromise((resolve) => sync() & async.nextTick(() => sync() & resolve()));\n\t}\n\n\t/**\n\t * Updates or replace browser history.\n\t * @param {?string} title Document title.\n\t * @param {!string} path Path containing the querystring part.\n\t * @param {!object} state\n\t * @param {boolean=} opt_replaceHistory Replaces browser history.\n\t * @protected\n\t */\n\tupdateHistory_(title, path, state, opt_replaceHistory) {\n\t\tif (opt_replaceHistory) {\n\t\t\tglobals.window.history.replaceState(state, title, path);\n\t\t} else {\n\t\t\tglobals.window.history.pushState(state, title, path);\n\t\t}\n\t\tglobals.document.title = title;\n\t}\n\n}\n\nexport default App;\n","'use strict';\n\nimport { isDef, isDefAndNotNull } from 'metal';\nimport Uri from 'metal-uri';\nimport { CancellablePromise as Promise } from 'metal-promise';\n\nclass Ajax {\n\n\t/**\n\t * XmlHttpRequest's getAllResponseHeaders() method returns a string of\n\t * response headers according to the format described on the spec:\n\t * {@link http://www.w3.org/TR/XMLHttpRequest/#the-getallresponseheaders-method}.\n\t * This method parses that string into a user-friendly name/value pair\n\t * object.\n\t * @param {string} allHeaders All headers as string.\n\t * @return {!Array.<Object<string, string>>}\n\t */\n\tstatic parseResponseHeaders(allHeaders) {\n\t\tvar headers = [];\n\t\tif (!allHeaders) {\n\t\t\treturn headers;\n\t\t}\n\t\tvar pairs = allHeaders.split('\\u000d\\u000a');\n\t\tfor (var i = 0; i < pairs.length; i++) {\n\t\t\tvar index = pairs[i].indexOf('\\u003a\\u0020');\n\t\t\tif (index > 0) {\n\t\t\t\tvar name = pairs[i].substring(0, index);\n\t\t\t\tvar value = pairs[i].substring(index + 2);\n\t\t\t\theaders.push({\n\t\t\t\t\tname: name,\n\t\t\t\t\tvalue: value\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\t\treturn headers;\n\t}\n\n\t/**\n\t * Requests the url using XMLHttpRequest.\n\t * @param {!string} url\n\t * @param {!string} method\n\t * @param {?string} body\n\t * @param {MultiMap=} opt_headers\n\t * @param {MultiMap=} opt_params\n\t * @param {number=} opt_timeout\n\t * @param {boolean=} opt_sync\n\t * @param {boolean=} opt_withCredentials\n\t * @return {Promise} Deferred ajax request.\n\t * @protected\n\t */\n\tstatic request(url, method, body, opt_headers, opt_params, opt_timeout, opt_sync, opt_withCredentials) {\n\t\turl = url || '';\n\t\tmethod = method || 'GET';\n\n\t\tvar request = new XMLHttpRequest();\n\n\t\tvar promise = new Promise(function(resolve, reject) {\n\t\t\trequest.onload = function() {\n\t\t\t\tif (request.aborted) {\n\t\t\t\t\trequest.onerror();\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t\tresolve(request);\n\t\t\t};\n\t\t\trequest.onerror = function() {\n\t\t\t\tvar error = new Error('Request error');\n\t\t\t\terror.request = request;\n\t\t\t\treject(error);\n\t\t\t};\n\t\t}).thenCatch(function(reason) {\n\t\t\trequest.abort();\n\t\t\tthrow reason;\n\t\t}).thenAlways(function() {\n\t\t\tclearTimeout(timeout);\n\t\t});\n\n\t\tif (opt_params) {\n\t\t\turl = new Uri(url).addParametersFromMultiMap(opt_params).toString();\n\t\t}\n\n\t\trequest.open(method, url, !opt_sync);\n\n\t\tif (opt_withCredentials) {\n\t\t\trequest.withCredentials = true;\n\t\t}\n\n\t\tif (opt_headers) {\n\t\t\topt_headers.names().forEach(function(name) {\n\t\t\t\trequest.setRequestHeader(name, opt_headers.getAll(name).join(', '));\n\t\t\t});\n\t\t}\n\n\t\trequest.send(isDef(body) ? body : null);\n\n\t\tif (isDefAndNotNull(opt_timeout)) {\n\t\t\tvar timeout = setTimeout(function() {\n\t\t\t\tpromise.cancel('Request timeout');\n\t\t\t}, opt_timeout);\n\t\t}\n\n\t\treturn promise;\n\t}\n\n}\n\nexport default Ajax;\n","'use strict';\n\n/**\n * Holds value error messages.\n * @const\n */\nclass errors {\n}\n\n/**\n * Invalid status error message.\n * @type {string}\n * @static\n */\nerrors.INVALID_STATUS = 'Invalid status code';\n\n/**\n * Request error message.\n * @type {string}\n * @static\n */\nerrors.REQUEST_ERROR = 'Request error';\n\n/**\n * Request timeout error message.\n * @type {string}\n * @static\n */\nerrors.REQUEST_TIMEOUT = 'Request timeout';\n\nexport default errors;","'use strict';\n\n/**\n * Metal.js browser user agent detection. It's extremely recommended the usage\n * of feature checking over browser user agent sniffing. Unfortunately, in some\n * situations feature checking can be slow or even impossible, therefore use\n * this utility with caution.\n * @see <a href=\"http://www.useragentstring.com/\">User agent strings</a>.\n */\nclass UA {\n\t/**\n\t * Gets the native userAgent string from navigator if it exists. If\n\t * navigator or navigator.userAgent string is missing, returns an empty\n\t * string.\n\t * @return {string}\n\t * @private\n\t * @static\n\t */\n\tstatic getNativeUserAgent() {\n\t\tvar navigator = UA.globals.window.navigator;\n\t\tif (navigator) {\n\t\t\tvar userAgent = navigator.userAgent;\n\t\t\tif (userAgent) {\n\t\t\t\treturn userAgent;\n\t\t\t}\n\t\t}\n\t\treturn '';\n\t}\n\n\t/**\n\t * Gets the native platform string from navigator if it exists. If\n\t * navigator or navigator.platform string is missing, returns an empty\n\t * string.\n\t * @return {string}\n\t * @private\n\t * @static\n\t */\n\tstatic getNativePlatform() {\n\t\tvar navigator = UA.globals.window.navigator;\n\t\tif (navigator) {\n\t\t\tvar platform = navigator.platform;\n\t\t\tif (platform) {\n\t\t\t\treturn platform;\n\t\t\t}\n\t\t}\n\t\treturn '';\n\t}\n\n\t/**\n\t * Whether the platform contains the given string, ignoring case.\n\t * @param {string} str\n\t * @return {boolean}\n\t * @private\n\t * @static\n\t*/\n\tstatic matchPlatform(str) {\n\t\treturn UA.platform.indexOf(str) !== -1;\n\t}\n\n\t/**\n\t * Whether the user agent contains the given string, ignoring case.\n\t * @param {string} str\n\t * @return {boolean}\n\t * @private\n\t * @static\n\t*/\n\tstatic matchUserAgent(str) {\n\t\treturn UA.userAgent.indexOf(str) !== -1;\n\t}\n\n\t/**\n\t * Tests the user agent.\n\t * @param {string} userAgent The user agent string.\n\t * @static\n\t */\n\tstatic testUserAgent(userAgent = '', platform = '') {\n\t\t/**\n\t\t * Holds the user agent value extracted from browser native user agent.\n\t\t * @type {string}\n\t\t * @static\n\t\t */\n\t\tUA.userAgent = userAgent;\n\n\t\t/**\n\t\t * Holds the platform value extracted from browser native platform.\n\t\t * @type {string}\n\t\t * @static\n\t\t */\n\t\tUA.platform = platform;\n\n\t\t/**\n\t\t * Whether the user's OS is Mac.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isMac = UA.matchPlatform('Mac');\n\n\t\t/**\n\t\t * Whether the user's OS is Win.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isWin = UA.matchPlatform('Win');\n\n\t\t/**\n\t\t * Whether the user's browser is Opera.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isOpera = UA.matchUserAgent('Opera') || UA.matchUserAgent('OPR');\n\n\t\t/**\n\t\t * Whether the user's browser is IE.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isIe = UA.matchUserAgent('Trident') || UA.matchUserAgent('MSIE');\n\n\t\t/**\n\t\t * Whether the user's browser is Edge.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isEdge = UA.matchUserAgent('Edge');\n\n\t\t/**\n\t\t * Whether the user's browser is IE or Edge.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isIeOrEdge = UA.isIe || UA.isEdge;\n\n\t\t/**\n\t\t * Whether the user's browser is Chrome.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isChrome = (UA.matchUserAgent('Chrome') || UA.matchUserAgent('CriOS')) && !UA.isOpera && !UA.isEdge;\n\n\t\t/**\n\t\t * Whether the user's browser is Safari.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isSafari = UA.matchUserAgent('Safari') && !(UA.isChrome || UA.isOpera || UA.isEdge);\n\n\t\t/**\n\t\t * Whether the user's browser is Firefox.\n\t\t * @type {boolean}\n\t\t * @static\n\t\t */\n\t\tUA.isFirefox = UA.matchUserAgent('Firefox');\n\t}\n}\n\n/**\n * Exposes global references.\n * @type {object}\n * @static\n */\nUA.globals = {\n\twindow: window\n};\n\nUA.testUserAgent(UA.getNativeUserAgent(), UA.getNativePlatform());\n\nexport default UA;\n","'use strict';\n\nimport { core } from 'metal';\nimport Ajax from 'metal-ajax';\nimport { MultiMap } from 'metal-structs';\nimport CancellablePromise from 'metal-promise';\nimport errors from '../errors/errors';\nimport utils from '../utils/utils';\nimport globals from '../globals/globals';\nimport Screen from './Screen';\nimport Uri from 'metal-uri';\nimport UA from 'metal-useragent';\n\nclass RequestScreen extends Screen {\n\n\t/**\n\t * Request screen abstract class to perform io operations on descendant\n\t * screens.\n\t * @constructor\n\t * @extends {Screen}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * @inheritDoc\n\t\t * @default true\n\t\t */\n\t\tthis.cacheable = true;\n\n\t\t/**\n\t\t * Holds default http headers to set on request.\n\t\t * @type {?Object=}\n\t\t * @default {\n\t\t * 'X-PJAX': 'true',\n\t\t * 'X-Requested-With': 'XMLHttpRequest'\n\t\t * }\n\t\t * @protected\n\t\t */\n\t\tthis.httpHeaders = {\n\t\t\t'X-PJAX': 'true',\n\t\t\t'X-Requested-With': 'XMLHttpRequest'\n\t\t};\n\n\t\t/**\n\t\t * Holds default http method to perform the request.\n\t\t * @type {!string}\n\t\t * @default RequestScreen.GET\n\t\t * @protected\n\t\t */\n\t\tthis.httpMethod = RequestScreen.GET;\n\n\t\t/**\n\t\t * Holds the XHR object responsible for the request.\n\t\t * @type {XMLHttpRequest}\n\t\t * @default null\n\t\t * @protected\n\t\t */\n\t\tthis.request = null;\n\n\t\t/**\n\t\t * Holds the request timeout in milliseconds.\n\t\t * @type {!number}\n\t\t * @default 30000\n\t\t * @protected\n\t\t */\n\t\tthis.timeout = 30000;\n\t}\n\n\t/**\n\t * Asserts that response status code is valid.\n\t * @param {number} status\n\t * @protected\n\t */\n\tassertValidResponseStatusCode(status) {\n\t\tif (!this.isValidResponseStatusCode(status)) {\n\t\t\tvar error = new Error(errors.INVALID_STATUS);\n\t\t\terror.invalidStatus = true;\n\t\t\tthrow error;\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tbeforeUpdateHistoryPath(path) {\n\t\tvar redirectPath = this.getRequestPath();\n\t\tif (redirectPath && redirectPath !== path) {\n\t\t\treturn redirectPath;\n\t\t}\n\t\treturn path;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tbeforeUpdateHistoryState(state) {\n\t\t// If state is ours and navigate to post-without-redirect-get set\n\t\t// history state to null, that way Senna will reload the page on\n\t\t// popstate since it cannot predict post data.\n\t\tif (state.senna && state.form && state.redirectPath === state.path) {\n\t\t\treturn null;\n\t\t}\n\t\treturn state;\n\t}\n\n\t/**\n\t * Formats load path before invoking ajax call.\n\t * @param {string} path\n\t * @return {string} Formatted path;\n\t * @protected\n\t */\n\tformatLoadPath(path) {\n\t\tvar uri = new Uri(path);\n\n\t\turi.setHostname(globals.window.location.hostname);\n\t\turi.setProtocol(globals.window.location.protocol);\n\n\t\tif (globals.window.location.port) {\n\t\t\turi.setPort(globals.window.location.port);\n\t\t}\n\n\t\tif (UA.isIeOrEdge && this.httpMethod === RequestScreen.GET) {\n\t\t\treturn uri.makeUnique().toString();\n\t\t}\n\n\t\treturn uri.toString();\n\t}\n\n\t/**\n\t * Gets the http headers.\n\t * @return {?Object=}\n\t */\n\tgetHttpHeaders() {\n\t\treturn this.httpHeaders;\n\t}\n\n\t/**\n\t * Gets the http method.\n\t * @return {!string}\n\t */\n\tgetHttpMethod() {\n\t\treturn this.httpMethod;\n\t}\n\n\t/**\n\t * Gets request path.\n\t * @return {string=}\n\t */\n\tgetRequestPath() {\n\t\tvar request = this.getRequest();\n\t\tif (request) {\n\t\t\tvar requestPath = request.requestPath;\n\t\t\tvar responseUrl = this.maybeExtractResponseUrlFromRequest(request);\n\t\t\tif (responseUrl) {\n\t\t\t\trequestPath = responseUrl;\n\t\t\t}\n\t\t\tif (UA.isIeOrEdge && this.httpMethod === RequestScreen.GET) {\n\t\t\t\trequestPath = new Uri(requestPath).removeUnique().toString();\n\t\t\t}\n\t\t\treturn utils.getUrlPath(requestPath);\n\t\t}\n\t\treturn null;\n\t}\n\n\t/**\n\t * Gets the request object.\n\t * @return {?Object}\n\t */\n\tgetRequest() {\n\t\treturn this.request;\n\t}\n\n\t/**\n\t * Gets the request timeout.\n\t * @return {!number}\n\t */\n\tgetTimeout() {\n\t\treturn this.timeout;\n\t}\n\n\t/**\n\t * Checks if response succeeded. Any status code 2xx or 3xx is considered\n\t * valid.\n\t * @param {number} statusCode\n\t */\n\tisValidResponseStatusCode(statusCode) {\n\t\treturn statusCode >= 200 && statusCode <= 399;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tload(path) {\n\t\tvar cache = this.getCache();\n\t\tif (core.isDefAndNotNull(cache)) {\n\t\t\treturn CancellablePromise.resolve(cache);\n\t\t}\n\n\t\tvar body = null;\n\t\tvar httpMethod = this.httpMethod;\n\n\t\tvar headers = new MultiMap();\n\t\tObject.keys(this.httpHeaders).forEach(header => headers.add(header, this.httpHeaders[header]));\n\n\t\tif (globals.capturedFormElement) {\n\t\t\tbody = new FormData(globals.capturedFormElement);\n\t\t\thttpMethod = RequestScreen.POST;\n\t\t\tif (UA.isIeOrEdge) {\n\t\t\t\theaders.add('If-None-Match', '\"0\"');\n\t\t\t}\n\t\t}\n\n\t\tvar requestPath = this.formatLoadPath(path);\n\t\treturn Ajax\n\t\t\t.request(requestPath, httpMethod, body, headers, null, this.timeout)\n\t\t\t.then(xhr => {\n\t\t\t\tthis.setRequest(xhr);\n\t\t\t\tthis.assertValidResponseStatusCode(xhr.status);\n\t\t\t\tif (httpMethod === RequestScreen.GET && this.isCacheable()) {\n\t\t\t\t\tthis.addCache(xhr.responseText);\n\t\t\t\t}\n\t\t\t\txhr.requestPath = requestPath;\n\t\t\t\treturn xhr.responseText;\n\t\t\t})\n\t\t\t.catch((reason) => {\n\t\t\t\tswitch (reason.message) {\n\t\t\t\t\tcase errors.REQUEST_TIMEOUT:\n\t\t\t\t\t\treason.timeout = true;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase errors.REQUEST_ERROR:\n\t\t\t\t\t\treason.requestError = true;\n\t\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t\tthrow reason;\n\t\t\t});\n\t}\n\n\t/**\n\t * The following method tries to extract the response url value by checking\n\t * the custom response header 'X-Request-URL' if proper value is not present\n\t * in XMLHttpRequest. The value of responseURL will be the final URL\n\t * obtained after any redirects. Internet Explorer, Edge and Safari <= 7\n\t * does not yet support the feature. For more information see:\n\t * https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseURL\n\t * https://xhr.spec.whatwg.org/#the-responseurl-attribute\n\t * @param {XMLHttpRequest} request\n\t * @return {?string} Response url best match.\n\t */\n\tmaybeExtractResponseUrlFromRequest(request) {\n\t\tvar responseUrl = request.responseURL;\n\t\tif (responseUrl) {\n\t\t\treturn responseUrl;\n\t\t}\n\t\treturn request.getResponseHeader(RequestScreen.X_REQUEST_URL_HEADER);\n\t}\n\n\t/**\n\t * Sets the http headers.\n\t * @param {?Object=} httpHeaders\n\t */\n\tsetHttpHeaders(httpHeaders) {\n\t\tthis.httpHeaders = httpHeaders;\n\t}\n\n\t/**\n\t * Sets the http method.\n\t * @param {!string} httpMethod\n\t */\n\tsetHttpMethod(httpMethod) {\n\t\tthis.httpMethod = httpMethod.toLowerCase();\n\t}\n\n\t/**\n\t * Sets the request object.\n\t * @param {?Object} request\n\t */\n\tsetRequest(request) {\n\t\tthis.request = request;\n\t}\n\n\t/**\n\t * Sets the request timeout in milliseconds.\n\t * @param {!number} timeout\n\t */\n\tsetTimeout(timeout) {\n\t\tthis.timeout = timeout;\n\t}\n\n}\n\n/**\n * Holds value for method get.\n * @type {string}\n * @default 'get'\n * @static\n */\nRequestScreen.GET = 'get';\n\n/**\n * Holds value for method post.\n * @type {string}\n * @default 'post'\n * @static\n */\nRequestScreen.POST = 'post';\n\n/**\n * Fallback http header to retrieve response request url.\n * @type {string}\n * @default 'X-Request-URL'\n * @static\n */\nRequestScreen.X_REQUEST_URL_HEADER = 'X-Request-URL';\n\nexport default RequestScreen;\n","'use strict';\n\nimport { core } from 'metal';\nimport { dom, globalEval, globalEvalStyles } from 'metal-dom';\nimport CancellablePromise from 'metal-promise';\nimport globals from '../globals/globals';\nimport RequestScreen from './RequestScreen';\nimport Surface from '../surface/Surface';\nimport UA from 'metal-useragent';\nimport Uri from 'metal-uri';\nimport utils from '../utils/utils';\n\nclass HtmlScreen extends RequestScreen {\n\n\t/**\n\t * Screen class that perform a request and extracts surface contents from\n\t * the response content.\n\t * @constructor\n\t * @extends {RequestScreen}\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the title selector. Relevant to extract the <code><title></code>\n\t\t * element from request fragments to use as the screen title.\n\t\t * @type {!string}\n\t\t * @default title\n\t\t * @protected\n\t\t */\n\t\tthis.titleSelector = 'title';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tactivate() {\n\t\tsuper.activate();\n\t\tthis.releaseVirtualDocument();\n\t\tthis.pendingStyles = null;\n\t}\n\n\t/**\n\t * Allocates virtual document for content. After allocated virtual document\n\t * can be accessed by <code>this.virtualDocument</code>.\n\t * @param {!string} htmlString\n\t */\n\tallocateVirtualDocumentForContent(htmlString) {\n\t\tif (!this.virtualDocument) {\n\t\t\tthis.virtualDocument = globals.document.createElement('html');\n\t\t}\n\n\t\tthis.copyNodeAttributesFromContent_(htmlString, this.virtualDocument);\n\n\t\tthis.virtualDocument.innerHTML = htmlString;\n\t}\n\n\t/**\n\t * Customizes logic to append styles into document. Relevant to when\n\t * tracking a style by id make sure to re-positions the new style in the\n\t * same dom order.\n\t * @param {Element} newStyle\n\t */\n\tappendStyleIntoDocument_(newStyle) {\n\t\tvar isTemporaryStyle = dom.match(newStyle, HtmlScreen.selectors.stylesTemporary);\n\t\tif (isTemporaryStyle) {\n\t\t\tthis.pendingStyles.push(newStyle);\n\t\t}\n\t\tif (newStyle.id) {\n\t\t\tvar styleInDoc = globals.document.getElementById(newStyle.id);\n\t\t\tif (styleInDoc) {\n\t\t\t\tstyleInDoc.parentNode.insertBefore(newStyle, styleInDoc.nextSibling);\n\t\t\t\treturn;\n\t\t\t}\n\t\t}\n\t\tglobals.document.head.appendChild(newStyle);\n\t}\n\n\t/**\n\t * If body is used as surface forces the requested documents to have same id\n\t * of the initial page.\n\t */\n\tassertSameBodyIdInVirtualDocument() {\n\t\tvar bodySurface = this.virtualDocument.querySelector('body');\n\t\tif (!globals.document.body.id) {\n\t\t\tglobals.document.body.id = 'senna_surface_' + core.getUid();\n\t\t}\n\t\tif (bodySurface) {\n\t\t\tbodySurface.id = globals.document.body.id;\n\t\t}\n\t}\n\n\t/**\n\t * Copies attributes from the <html> tag of content to the given node.\n\t */\n\tcopyNodeAttributesFromContent_(content, node) {\n\t\tcontent = content.replace(/[<]\\s*html/ig, '<senna');\n\t\tcontent = content.replace(/\\/html\\s*\\>/ig, '/senna>');\n\t\tnode.innerHTML = content;\n\t\tvar placeholder = node.querySelector('senna');\n\t\tif (placeholder) {\n\t\t\tutils.clearNodeAttributes(node);\n\t\t\tutils.copyNodeAttributes(placeholder, node);\n\t\t}\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tdisposeInternal() {\n\t\tthis.disposePendingStyles();\n\t\tsuper.disposeInternal();\n\t}\n\n\t/**\n\t * Disposes pending styles if screen get disposed prior to its loading.\n\t */\n\tdisposePendingStyles() {\n\t\tif (this.pendingStyles) {\n\t\t\tthis.pendingStyles.forEach((style) => dom.exitDocument(style));\n\t\t}\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tevaluateScripts(surfaces) {\n\t\tvar evaluateTrackedScripts = this.evaluateTrackedResources_(\n\t\t\tglobalEval.runScriptsInElement, HtmlScreen.selectors.scripts,\n\t\t\tHtmlScreen.selectors.scriptsTemporary, HtmlScreen.selectors.scriptsPermanent);\n\n\t\treturn evaluateTrackedScripts.then(() => super.evaluateScripts(surfaces));\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tevaluateStyles(surfaces) {\n\t\tthis.pendingStyles = [];\n\t\tvar evaluateTrackedStyles = this.evaluateTrackedResources_(\n\t\t\tglobalEvalStyles.runStylesInElement, HtmlScreen.selectors.styles,\n\t\t\tHtmlScreen.selectors.stylesTemporary, HtmlScreen.selectors.stylesPermanent,\n\t\t\tthis.appendStyleIntoDocument_.bind(this));\n\n\t\treturn evaluateTrackedStyles.then(() => super.evaluateStyles(surfaces));\n\t}\n\n\t/**\n\t * Evaluates tracked resources inside incoming fragment and remove existing\n\t * temporary resources.\n\t * @param {?function()} appendFn Function to append the node into document.\n\t * @param {!string} selector Selector used to find resources to track.\n\t * @param {!string} selectorTemporary Selector used to find temporary\n\t * resources to track.\n\t * @param {!string} selectorPermanent Selector used to find permanent\n\t * resources to track.\n\t * @param {!function} opt_appendResourceFn Optional function used to\n\t * evaluate fragment containing resources.\n\t * @return {CancellablePromise} Deferred that waits resources evaluation to\n\t * complete.\n\t * @private\n\t */\n\tevaluateTrackedResources_(evaluatorFn, selector, selectorTemporary, selectorPermanent, opt_appendResourceFn) {\n\t\tvar tracked = this.virtualQuerySelectorAll_(selector);\n\t\tvar temporariesInDoc = this.querySelectorAll_(selectorTemporary);\n\t\tvar permanentsInDoc = this.querySelectorAll_(selectorPermanent);\n\n\t\t// Adds permanent resources in document to cache.\n\t\tpermanentsInDoc.forEach((resource) => {\n\t\t\tvar resourceKey = this.getResourceKey_(resource);\n\t\t\tif (resourceKey) {\n\t\t\t\tHtmlScreen.permanentResourcesInDoc[resourceKey] = true;\n\t\t\t}\n\t\t});\n\n\t\tvar frag = dom.buildFragment();\n\t\ttracked.forEach((resource) => {\n\t\t\tvar resourceKey = this.getResourceKey_(resource);\n\t\t\t// Do not load permanent resources if already in document.\n\t\t\tif (!HtmlScreen.permanentResourcesInDoc[resourceKey]) {\n\t\t\t\tfrag.appendChild(resource);\n\t\t\t}\n\t\t\t// If resource has key and is permanent add to cache.\n\t\t\tif (resourceKey && dom.match(resource, selectorPermanent)) {\n\t\t\t\tHtmlScreen.permanentResourcesInDoc[resourceKey] = true;\n\t\t\t}\n\t\t});\n\n\t\treturn new CancellablePromise((resolve) => {\n\t\t\tevaluatorFn(frag, () => {\n\t\t\t\ttemporariesInDoc.forEach((resource) => dom.exitDocument(resource));\n\t\t\t\tresolve();\n\t\t\t}, opt_appendResourceFn);\n\t\t});\n\t}\n\n\t/**\n\t * @Override\n\t */\n\tflip(surfaces) {\n\t\treturn super.flip(surfaces).then(() => {\n\t\t\tutils.clearNodeAttributes(document.documentElement);\n\t\t\tutils.copyNodeAttributes(this.virtualDocument, document.documentElement);\n\t\t});\n\t}\n\n\t/**\n\t * Extracts a key to identify the resource based on its attributes.\n\t * @param {Element} resource\n\t * @return {string} Extracted key based on resource attributes in order of\n\t * preference: id, href, src.\n\t */\n\tgetResourceKey_(resource) {\n\t\treturn resource.id || resource.href || resource.src || '';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tgetSurfaceContent(surfaceId) {\n\t\tvar surface = this.virtualDocument.querySelector('#' + surfaceId);\n\t\tif (surface) {\n\t\t\tvar defaultChild = surface.querySelector('#' + surfaceId + '-' + Surface.DEFAULT);\n\t\t\tif (defaultChild) {\n\t\t\t\treturn defaultChild.innerHTML;\n\t\t\t}\n\t\t\treturn surface.innerHTML; // If default content not found, use surface content\n\t\t}\n\t}\n\n\t/**\n\t * Gets the title selector.\n\t * @return {!string}\n\t */\n\tgetTitleSelector() {\n\t\treturn this.titleSelector;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tload(path) {\n\t\treturn super.load(path)\n\t\t\t.then(content => {\n\t\t\t\tthis.allocateVirtualDocumentForContent(content);\n\t\t\t\tthis.resolveTitleFromVirtualDocument();\n\t\t\t\tthis.assertSameBodyIdInVirtualDocument();\n\t\t\t\tif (UA.isIe) {\n\t\t\t\t\tthis.makeTemporaryStylesHrefsUnique_();\n\t\t\t\t}\n\t\t\t\treturn content;\n\t\t\t});\n\t}\n\n\t/**\n\t * Queries temporary styles from virtual document, and makes them unique.\n\t * This is necessary for caching and load event firing issues specific to\n\t * IE11. https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7940171/\n\t */\n\tmakeTemporaryStylesHrefsUnique_() {\n\t\tvar temporariesInDoc = this.virtualQuerySelectorAll_(HtmlScreen.selectors.stylesTemporary);\n\t\ttemporariesInDoc.forEach((style) => this.replaceStyleAndMakeUnique_(style));\n\t}\n\n\t/**\n\t * Creates a new element from given, copies attributes, mutates href to be\n\t * unique to prevent caching and more than one load/error event from firing.\n\t */\n\treplaceStyleAndMakeUnique_(style) {\n\t\tif (style.href) {\n\t\t\tvar newStyle = globals.document.createElement(style.tagName);\n\t\t\tstyle.href = new Uri(style.href).makeUnique().toString();\n\t\t\tutils.copyNodeAttributes(style, newStyle);\n\t\t\tstyle.parentNode.replaceChild(newStyle, style);\n\t\t\tstyle.disabled = true;\n\t\t}\n\t}\n\n\t/**\n\t * Queries elements from virtual document and returns an array of elements.\n\t * @param {!string} selector\n\t * @return {array.<Element>}\n\t */\n\tvirtualQuerySelectorAll_(selector) {\n\t\treturn Array.prototype.slice.call(this.virtualDocument.querySelectorAll(selector));\n\t}\n\n\t/**\n\t * Queries elements from document and returns an array of elements.\n\t * @param {!string} selector\n\t * @return {array.<Element>}\n\t */\n\tquerySelectorAll_(selector) {\n\t\treturn Array.prototype.slice.call(globals.document.querySelectorAll(selector));\n\t}\n\n\t/**\n\t * Releases virtual document allocated for content.\n\t */\n\treleaseVirtualDocument() {\n\t\tthis.virtualDocument = null;\n\t}\n\n\t/**\n\t * Resolves title from allocated virtual document.\n\t */\n\tresolveTitleFromVirtualDocument() {\n\t\tvar title = this.virtualDocument.querySelector(this.titleSelector);\n\t\tif (title) {\n\t\t\tthis.setTitle(title.innerHTML.trim());\n\t\t}\n\t}\n\n\t/**\n\t * Sets the title selector.\n\t * @param {!string} titleSelector\n\t */\n\tsetTitleSelector(titleSelector) {\n\t\tthis.titleSelector = titleSelector;\n\t}\n\n}\n\n/**\n * Helper selectors for tracking resources.\n * @type {object}\n * @protected\n * @static\n */\nHtmlScreen.selectors = {\n\tscripts: 'script[data-senna-track]',\n\tscriptsPermanent: 'script[data-senna-track=\"permanent\"]',\n\tscriptsTemporary: 'script[data-senna-track=\"temporary\"]',\n\tstyles: 'style[data-senna-track],link[data-senna-track]',\n\tstylesPermanent: 'style[data-senna-track=\"permanent\"],link[data-senna-track=\"permanent\"]',\n\tstylesTemporary: 'style[data-senna-track=\"temporary\"],link[data-senna-track=\"temporary\"]'\n};\n\n/**\n * Caches permanent resource keys.\n * @type {object}\n * @protected\n * @static\n */\nHtmlScreen.permanentResourcesInDoc = {};\n\nexport default HtmlScreen;\n","'use strict';\n\nimport utils from './utils/utils';\nimport App from './app/App';\nimport HtmlScreen from './screen/HtmlScreen';\nimport RequestScreen from './screen/RequestScreen';\nimport Route from './route/Route';\nimport Screen from './screen/Screen';\n\nexport default App;\nexport { utils, App, HtmlScreen, Route, RequestScreen, Screen };\n","'use strict';\n\nexport default {\n\tbasePath: 'data-senna-base-path',\n\tlinkSelector: 'data-senna-link-selector',\n\tloadingCssClass: 'data-senna-loading-css-class',\n\tsenna: 'data-senna',\n\tdispatch: 'data-senna-dispatch',\n\tsurface: 'data-senna-surface',\n\tupdateScrollPosition: 'data-senna-update-scroll-position'\n};","'use strict';\n\nimport { core, object, Disposable } from 'metal';\nimport dataAttributes from './dataAttributes';\nimport globals from '../globals/globals';\nimport App from './App';\nimport HtmlScreen from '../screen/HtmlScreen';\nimport Route from '../route/Route';\n\nclass AppDataAttributeHandler extends Disposable {\n\n\t/**\n\t * Initilizes App, register surfaces and routes from data attributes.\n\t * @constructor\n\t */\n\tconstructor() {\n\t\tsuper();\n\n\t\t/**\n\t\t * Holds the app reference initialized by data attributes.\n\t\t * @type {App}\n\t\t * @default null\n\t\t */\n\t\tthis.app = null;\n\n\t\t/**\n\t\t * Holds the base element to search initialization data attributes. This\n\t\t * element is the container used to enable initialization based on the\n\t\t * presence of `data-senna` attribute.\n\t\t * @type {Element}\n\t\t * @default null\n\t\t */\n\t\tthis.baseElement = null;\n\t}\n\n\t/**\n\t * Inits application based on information scanned from document.\n\t */\n\thandle() {\n\t\tif (!core.isElement(this.baseElement)) {\n\t\t\tthrow new Error('Senna data attribute handler base element ' +\n\t\t\t\t'not set or invalid, try setting a valid element that ' +\n\t\t\t\t'contains a `data-senna` attribute.');\n\t\t}\n\n\t\tif (!this.baseElement.hasAttribute(dataAttributes.senna)) {\n\t\t\tconsole.log('Senna was not initialized from data attributes. ' +\n\t\t\t\t'In order to enable its usage from data attributes try setting ' +\n\t\t\t\t'in the base element, e.g. `<body data-senna>`.');\n\t\t\treturn;\n\t\t}\n\n\t\tif (this.app) {\n\t\t\tthrow new Error('Senna app was already initialized.');\n\t\t}\n\n\t\tconsole.log('Senna initialized from data attribute.');\n\n\t\tthis.app = new App();\n\t\tthis.maybeAddRoutes_();\n\t\tthis.maybeAddSurfaces_();\n\t\tthis.maybeSetBasePath_();\n\t\tthis.maybeSetLinkSelector_();\n\t\tthis.maybeSetLoadingCssClass_();\n\t\tthis.maybeSetUpdateScrollPosition_();\n\t\tthis.maybeDispatch_();\n\t}\n\n\t/**\n\t * Disposes of this instance's object references.\n\t * @override\n\t */\n\tdisposeInternal() {\n\t\tif (this.app) {\n\t\t\tthis.app.dispose();\n\t\t}\n\t}\n\n\t/**\n\t * Gets the app reference.\n\t * @return {App}\n\t */\n\tgetApp() {\n\t\treturn this.app;\n\t}\n\n\t/**\n\t * Gets the base element.\n\t * @return {Element} baseElement\n\t */\n\tgetBaseElement() {\n\t\treturn this.baseElement;\n\t}\n\n\t/**\n\t * Maybe adds app routes from link elements that are `senna-route`.\n\t */\n\tmaybeAddRoutes_() {\n\t\tvar routesSelector = 'link[rel=\"senna-route\"]';\n\t\tthis.querySelectorAllAsArray_(routesSelector).forEach((link) => this.maybeParseLinkRoute_(link));\n\t\tif (!this.app.hasRoutes()) {\n\t\t\tthis.app.addRoutes(new Route(/.*/, HtmlScreen));\n\t\t\tconsole.log('Senna can\\'t find route elements, adding default.');\n\t\t}\n\t}\n\n\t/**\n\t * Maybe adds app surfaces by scanning `data-senna-surface` data attribute.\n\t */\n\tmaybeAddSurfaces_() {\n\t\tvar surfacesSelector = '[' + dataAttributes.surface + ']';\n\t\tthis.querySelectorAllAsArray_(surfacesSelector).forEach((surfaceElement) => {\n\t\t\tthis.updateElementIdIfSpecialSurface_(surfaceElement);\n\t\t\tthis.app.addSurfaces(surfaceElement.id);\n\t\t});\n\t}\n\n\t/**\n\t * Dispatches app navigation to the current path when initializes.\n\t */\n\tmaybeDispatch_() {\n\t\tif (this.baseElement.hasAttribute(dataAttributes.dispatch)) {\n\t\t\tthis.app.dispatch();\n\t\t}\n\t}\n\n\t/**\n\t * Adds app route by parsing valid link elements. A valid link element is of\n\t * the kind `rel=\"senna-route\"`.\n\t * @param {Element} link\n\t */\n\tmaybeParseLinkRoute_(link) {\n\t\tvar route = new Route(this.maybeParseLinkRoutePath_(link), this.maybeParseLinkRouteHandler_(link));\n\t\tthis.app.addRoutes(route);\n\t\tconsole.log('Senna scanned route ' + route.getPath());\n\t}\n\n\t/**\n\t * Maybe parse link route handler.\n\t * @param {Element} link\n\t * @return {?string}\n\t */\n\tmaybeParseLinkRouteHandler_(link) {\n\t\tvar handler = link.getAttribute('type');\n\t\tif (core.isDefAndNotNull(handler)) {\n\t\t\thandler = object.getObjectByName(handler);\n\t\t}\n\t\treturn handler;\n\t}\n\n\t/**\n\t * Maybe parse link route path.\n\t * @param {Element} link\n\t * @return {?string}\n\t */\n\tmaybeParseLinkRoutePath_(link) {\n\t\tvar path = link.getAttribute('href');\n\t\tif (core.isDefAndNotNull(path)) {\n\t\t\tif (path.indexOf('regex:') === 0) {\n\t\t\t\tpath = new RegExp(path.substring(6));\n\t\t\t}\n\t\t}\n\t\treturn path;\n\t}\n\n\t/**\n\t * Maybe sets app base path from `data-senna-base-path` data attribute.\n\t */\n\tmaybeSetBasePath_() {\n\t\tvar basePath = this.baseElement.getAttribute(dataAttributes.basePath);\n\t\tif (core.isDefAndNotNull(basePath)) {\n\t\t\tthis.app.setBasePath(basePath);\n\t\t\tconsole.log('Senna scanned base path ' + basePath);\n\t\t}\n\t}\n\n\t/**\n\t * Maybe sets app link selector from `data-senna-link-selector` data\n\t * attribute.\n\t */\n\tmaybeSetLinkSelector_() {\n\t\tvar linkSelector = this.baseElement.getAttribute(dataAttributes.linkSelector);\n\t\tif (core.isDefAndNotNull(linkSelector)) {\n\t\t\tthis.app.setLinkSelector(linkSelector);\n\t\t\tconsole.log('Senna scanned link selector ' + linkSelector);\n\t\t}\n\t}\n\n\t/**\n\t * Maybe sets app link loading css class from `data-senna-loading-css-class`\n\t * data attribute.\n\t */\n\tmaybeSetLoadingCssClass_() {\n\t\tvar loadingCssClass = this.baseElement.getAttribute(dataAttributes.loadingCssClass);\n\t\tif (core.isDefAndNotNull(loadingCssClass)) {\n\t\t\tthis.app.setLoadingCssClass(loadingCssClass);\n\t\t\tconsole.log('Senna scanned loading css class ' + loadingCssClass);\n\t\t}\n\t}\n\n\t/**\n\t * Maybe sets app update scroll position from\n\t * `data-senna-update-scroll-position` data attribute.\n\t */\n\tmaybeSetUpdateScrollPosition_() {\n\t\tvar updateScrollPosition = this.baseElement.getAttribute(dataAttributes.updateScrollPosition);\n\t\tif (core.isDefAndNotNull(updateScrollPosition)) {\n\t\t\tif (updateScrollPosition === 'false') {\n\t\t\t\tthis.app.setUpdateScrollPosition(false);\n\t\t\t} else {\n\t\t\t\tthis.app.setUpdateScrollPosition(true);\n\t\t\t}\n\t\t\tconsole.log('Senna scanned update scroll position ' + updateScrollPosition);\n\t\t}\n\t}\n\n\t/**\n\t * Queries elements from document and returns an array of elements.\n\t * @param {!string} selector\n\t * @return {array.<Element>}\n\t */\n\tquerySelectorAllAsArray_(selector) {\n\t\treturn Array.prototype.slice.call(globals.document.querySelectorAll(selector));\n\t}\n\n\t/**\n\t * Updates element id if handled as special surface element. Some surfaces\n\t * are slightly different from others, like when threating <code>body</code>\n\t * as surface.\n\t * @param {Element} element\n\t */\n\tupdateElementIdIfSpecialSurface_(element) {\n\t\tif (!element.id && element === globals.document.body) {\n\t\t\telement.id = 'senna_surface_' + core.getUid();\n\t\t}\n\t}\n\n\t/**\n\t * Sets the base element.\n\t * @param {Element} baseElement\n\t */\n\tsetBaseElement(baseElement) {\n\t\tthis.baseElement = baseElement;\n\t}\n\n}\n\nexport default AppDataAttributeHandler;\n","'use strict';\n\nimport globals from '../globals/globals';\nimport AppDataAttributeHandler from './AppDataAttributeHandler';\n\n/**\n * Data attribute handler.\n * @type {AppDataAttributeHandler}\n */\nvar dataAttributeHandler = new AppDataAttributeHandler();\n\nglobals.document.addEventListener('DOMContentLoaded', function() {\n\tdataAttributeHandler.setBaseElement(globals.document.body);\n\tdataAttributeHandler.handle();\n});\n\nexport default dataAttributeHandler;"],"sourceRoot":"/source/"} \ No newline at end of file diff --git a/package.json b/package.json index 45fd527..9dd02c6 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "senna", - "version": "2.0.2", + "version": "2.0.3", "description": "A blazing-fast Single Page Application engine", "license": "BSD-3-Clause", "repository": "liferay/senna.js",