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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| import { defaults, capitalize } from 'lodash'; | ||
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| import uiModules from 'ui/modules'; | ||
| import filterTemplate from 'ui/chrome/config/filter.html'; | ||
| import intervalTemplate from 'ui/chrome/config/interval.html'; | ||
|
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| export default function ($compile) { | ||
| return class KbnTopNavController { | ||
| constructor(opts = []) { | ||
| if (opts instanceof KbnTopNavController) { | ||
| return opts; | ||
| } | ||
|
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| this.opts = []; | ||
| this.menuItems = []; | ||
| this.currentKey = null; | ||
| this.templates = { | ||
| interval: intervalTemplate, | ||
| filter: filterTemplate, | ||
| }; | ||
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| opts.forEach(rawOpt => { | ||
| const opt = this._applyOptDefault(rawOpt); | ||
| if (!opt.key) throw new TypeError('KbnTopNav: menu items must have a key'); | ||
| this.opts.push(opt); | ||
| if (!opt.hideButton) this.menuItems.push(opt); | ||
| if (opt.template) this.templates[opt.key] = opt.template; | ||
| }); | ||
| } | ||
|
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||
| // change the current key and rerender | ||
| set(key) { | ||
| if (key && !this.templates.hasOwnProperty(key)) { | ||
| throw new TypeError(`KbnTopNav: unknown template key "${key}"`); | ||
| } | ||
|
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| this.currentKey = key || null; | ||
| this._render(); | ||
| } | ||
|
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| // little usability helpers | ||
| which() { return this.currentKey; } | ||
| is(key) { return this.which() === key; } | ||
| open(key) { this.set(key); } | ||
| close(key) { (!key || this.is(key)) && this.set(null); } | ||
| toggle(key) { this.set(this.is(key) ? null : key); } | ||
|
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||
| // apply the defaults to individual options | ||
| _applyOptDefault(opt = {}) { | ||
| return defaults({}, opt, { | ||
| label: capitalize(opt.key), | ||
| hasFunction: !!opt.run, | ||
| description: opt.run ? opt.key : `Toggle ${opt.key} view`, | ||
| hideButton: !!opt.hideButton, | ||
| run: (item) => this.toggle(item.key) | ||
| }); | ||
| } | ||
|
|
||
| // enable actual rendering | ||
| _link($scope, $element) { | ||
| this.$scope = $scope; | ||
| this.$element = $element; | ||
| this._render(); | ||
| } | ||
|
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||
| // render the current template to the $element if possible | ||
| // function is idempotent | ||
| _render() { | ||
| const { $scope, $element, rendered, currentKey } = this; | ||
| const templateToRender = currentKey && this.templates[currentKey]; | ||
|
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||
| if (rendered) { | ||
| if (rendered.key !== currentKey) { | ||
| // we have an invalid render, clear it | ||
| rendered.$childScope.$destroy(); | ||
| rendered.$el.remove(); | ||
| this.rendered = null; | ||
| } else { | ||
| // our previous render is still valid, keep it | ||
| return; | ||
| } | ||
| } | ||
|
|
||
| if (!templateToRender || !$scope || !$element) { | ||
| // we either have nothing to render, or we can't render | ||
| return; | ||
| } | ||
|
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||
| const $childScope = $scope.$new(); | ||
| const $el = $compile(templateToRender)($childScope); | ||
| $element.find('#template_wrapper').html($el); | ||
| this.rendered = { $childScope, $el, key: currentKey }; | ||
| } | ||
| }; | ||
| } |