Merge branch 'master' of https://github.com/angular/angular.js into 6749

* 'master' of https://github.com/angular/angular.js:
  fix($rootScope): ng-repeat can't handle NaN values. angular#4605
  test(ngMock): workaround issue with negative timestamps
  fix(select): avoid checking option element selected properties in render
  fix(orderBy): support string predicates containing non-ident characters
  fix(ngCookie): convert non-string values to string
  fix(ngTouch): update workaround for desktop Webkit quirk
  fix($httpBackend): don't error when JSONP callback called with no parameter
  fix($$RAFProvider): check for webkitCancelRequestAnimationFrame
  docs(tutorial/step_05): fix services link
  docs(tutorial/step_05): removed stray "a"
  style(ngMocks): remove ws
  feat(ngMock.$httpBackend): added support for function as URL matcher
  feat($compile): add support for $observer deregistration
  fix(Scope): $watchCollection should call listener with oldValue
  chore(log): add `log.empty()`  method to the testing logger

docs/content/tutorial/step_05.ngdoc

@@ -7,7 +7,7 @@
 
 
 Enough of building an app with three phones in a hard-coded dataset! Let's fetch a larger dataset
-from our server using one of Angular's built-in {@link guide/dev_guide.services services} called {@link
+from our server using one of Angular's built-in {@link guide/services services} called {@link
 ng.$http $http}. We will use Angular's {@link guide/di dependency
 injection (DI)} to provide the service to the `PhoneListCtrl` controller.
 
@@ -20,7 +20,6 @@ You should now see a list of 20 phones.
 The most important changes are listed below. You can see the full diff on [GitHub](https://github.com/angular/angular-phonecat/compare/step-4...step-5):
 
 ## Data
-a
 The `app/phones/phones.json` file in your project is a dataset that contains a larger list of phones
 stored in the JSON format.
 

src/ng/compile.js

@@ -775,7 +775,7 @@ function $CompileProvider($provide, $$sanitizeUriProvider) {
        * @param {function(interpolatedValue)} fn Function that will be called whenever
                 the interpolated value of the attribute changes.
        *        See the {@link guide/directive#Attributes Directives} guide for more info.
-       * @returns {function()} the `fn` parameter.
+       * @returns {function()} Returns a deregistration function for this observer.
        */
       $observe: function(key, fn) {
         var attrs = this,
@@ -789,7 +789,10 @@ function $CompileProvider($provide, $$sanitizeUriProvider) {
             fn(attrs[key]);
           }
         });
-        return fn;
+
+        return function() {
+          arrayRemove(listeners, fn);
+        };
       }
     };
 

src/ng/directive/select.js

@@ -394,6 +394,12 @@ var selectDirective = ['$compile', '$parse', function($compile,   $parse) {
                   value = valueFn(scope, locals);
                 }
               }
+              // Update the null option's selected property here so $render cleans it up correctly
+              if (optionGroupsCache[0].length > 1) {
+                if (optionGroupsCache[0][1].id !== key) {
+                  optionGroupsCache[0][1].selected = false;
+                }
+              }
             }
             ctrl.$setViewValue(value);
           });
@@ -531,7 +537,7 @@ var selectDirective = ['$compile', '$parse', function($compile,   $parse) {
                   lastElement.val(existingOption.id = option.id);
                 }
                 // lastElement.prop('selected') provided by jQuery has side-effects
-                if (lastElement[0].selected !== option.selected) {
+                if (existingOption.selected !== option.selected) {
                   lastElement.prop('selected', (existingOption.selected = option.selected));
                 }
               } else {

src/ng/filter/orderBy.js

@@ -74,6 +74,12 @@ function orderByFilter($parse){
           predicate = predicate.substring(1);
         }
         get = $parse(predicate);
+        if (get.constant) {
+          var key = get();
+          return reverseComparator(function(a,b) {
+            return compare(a[key], b[key]);
+          }, descending);
+        }
       }
       return reverseComparator(function(a,b){
         return compare(get(a),get(b));

src/ng/httpBackend.js

@@ -49,16 +49,13 @@ function createHttpBackend($browser, createXhr, $browserDefer, callbacks, rawDoc
       var callbackId = '_' + (callbacks.counter++).toString(36);
       callbacks[callbackId] = function(data) {
         callbacks[callbackId].data = data;
+        callbacks[callbackId].called = true;
       };
 
       var jsonpDone = jsonpReq(url.replace('JSON_CALLBACK', 'angular.callbacks.' + callbackId),
-          function() {
-        if (callbacks[callbackId].data) {
-          completeRequest(callback, 200, callbacks[callbackId].data);
-        } else {
-          completeRequest(callback, status || -2);
-        }
-        callbacks[callbackId] = angular.noop;
+          callbackId, function(status, text) {
+        completeRequest(callback, status, callbacks[callbackId].data, "", text);
+        callbacks[callbackId] = noop;
       });
     } else {
 
@@ -158,33 +155,39 @@ function createHttpBackend($browser, createXhr, $browserDefer, callbacks, rawDoc
     }
   };
 
-  function jsonpReq(url, done) {
+  function jsonpReq(url, callbackId, done) {
     // we can't use jQuery/jqLite here because jQuery does crazy shit with script elements, e.g.:
     // - fetches local scripts via XHR and evals them
     // - adds and immediately removes script elements from the document
-    var script = rawDocument.createElement('script'),
-        doneWrapper = function() {
-          script.onreadystatechange = script.onload = script.onerror = null;
-          rawDocument.body.removeChild(script);
-          if (done) done();
-        };
-
-    script.type = 'text/javascript';
+    var script = rawDocument.createElement('script'), callback = null;
+    script.type = "text/javascript";
     script.src = url;
-
-    if (msie && msie <= 8) {
-      script.onreadystatechange = function() {
-        if (/loaded|complete/.test(script.readyState)) {
-          doneWrapper();
+    script.async = true;
+
+    callback = function(event) {
+      removeEventListenerFn(script, "load", callback);
+      removeEventListenerFn(script, "error", callback);
+      rawDocument.body.removeChild(script);
+      script = null;
+      var status = -1;
+      var text = "unknown";
+
+      if (event) {
+        if (event.type === "load" && !callbacks[callbackId].called) {
+          event = { type: "error" };
         }
-      };
-    } else {
-      script.onload = script.onerror = function() {
-        doneWrapper();
-      };
-    }
+        text = event.type;
+        status = event.type === "error" ? 404 : 200;
+      }
+
+      if (done) {
+        done(status, text);
+      }
+    };
 
+    addEventListenerFn(script, "load", callback);
+    addEventListenerFn(script, "error", callback);
     rawDocument.body.appendChild(script);
-    return doneWrapper;
+    return callback;
   }
 }

src/ng/raf.js

@@ -8,7 +8,8 @@ function $$RAFProvider(){ //rAF
 
     var cancelAnimationFrame = $window.cancelAnimationFrame ||
                                $window.webkitCancelAnimationFrame ||
-                               $window.mozCancelAnimationFrame;
+                               $window.mozCancelAnimationFrame ||
+                               $window.webkitCancelRequestAnimationFrame;
 
     var rafSupported = !!requestAnimationFrame;
     var raf = rafSupported

src/ng/rootScope.js

@@ -398,30 +398,40 @@ function $RootScopeProvider(){
        *    {@link ng.$rootScope.Scope#$digest $digest} cycle. Any shallow change within the
        *    collection will trigger a call to the `listener`.
        *
-       * @param {function(newCollection, oldCollection, scope)} listener a callback function that is
-       *    fired with both the `newCollection` and `oldCollection` as parameters.
-       *    The `newCollection` object is the newly modified data obtained from the `obj` expression
-       *    and the `oldCollection` object is a copy of the former collection data.
-       *    The `scope` refers to the current scope.
+       * @param {function(newCollection, oldCollection, scope)} listener a callback function called
+       *    when a change is detected.
+       *    - The `newCollection` object is the newly modified data obtained from the `obj` expression
+       *    - The `oldCollection` object is a copy of the former collection data.
+       *      Due to performance considerations, the`oldCollection` value is computed only if the
+       *      `listener` function declares two or more arguments.
+       *    - The `scope` argument refers to the current scope.
        *
        * @returns {function()} Returns a de-registration function for this listener. When the
        *    de-registration function is executed, the internal watch operation is terminated.
        */
       $watchCollection: function(obj, listener) {
         var self = this;
-        var oldValue;
+        // the current value, updated on each dirty-check run
         var newValue;
+        // a shallow copy of the newValue from the last dirty-check run,
+        // updated to match newValue during dirty-check run
+        var oldValue;
+        // a shallow copy of the newValue from when the last change happened
+        var veryOldValue;
+        // only track veryOldValue if the listener is asking for it
+        var trackVeryOldValue = (listener.length > 1);
         var changeDetected = 0;
         var objGetter = $parse(obj);
         var internalArray = [];
         var internalObject = {};
+        var initRun = true;
         var oldLength = 0;
 
         function $watchCollectionWatch() {
           newValue = objGetter(self);
           var newLength, key;
 
-          if (!isObject(newValue)) {
+          if (!isObject(newValue)) { // if primitive
             if (oldValue !== newValue) {
               oldValue = newValue;
               changeDetected++;
@@ -443,7 +453,9 @@ function $RootScopeProvider(){
             }
             // copy the items to oldValue and look for changes.
             for (var i = 0; i < newLength; i++) {
-              if (oldValue[i] !== newValue[i]) {
+              var bothNaN = (oldValue[i] !== oldValue[i]) &&
+                  (newValue[i] !== newValue[i]);
+              if (!bothNaN && (oldValue[i] !== newValue[i])) {
                 changeDetected++;
                 oldValue[i] = newValue[i];
               }
@@ -487,7 +499,32 @@ function $RootScopeProvider(){
         }
 
         function $watchCollectionAction() {
-          listener(newValue, oldValue, self);
+          if (initRun) {
+            initRun = false;
+            listener(newValue, newValue, self);
+          } else {
+            listener(newValue, veryOldValue, self);
+          }
+
+          // make a copy for the next time a collection is changed
+          if (trackVeryOldValue) {
+            if (!isObject(newValue)) {
+              //primitive
+              veryOldValue = newValue;
+            } else if (isArrayLike(newValue)) {
+              veryOldValue = new Array(newValue.length);
+              for (var i = 0; i < newValue.length; i++) {
+                veryOldValue[i] = newValue[i];
+              }
+            } else { // if object
+              veryOldValue = {};
+              for (var key in newValue) {
+                if (hasOwnProperty.call(newValue, key)) {
+                  veryOldValue[key] = newValue[key];
+                }
+              }
+            }
+          }
         }
 
         return this.$watch($watchCollectionWatch, $watchCollectionAction);

src/ngCookies/cookies.js

@@ -95,12 +95,10 @@ angular.module('ngCookies', ['ng']).
         for(name in cookies) {
           value = cookies[name];
           if (!angular.isString(value)) {
-            if (angular.isDefined(lastCookies[name])) {
-              cookies[name] = lastCookies[name];
-            } else {
-              delete cookies[name];
-            }
-          } else if (value !== lastCookies[name]) {
+            value = '' + value;
+            cookies[name] = value;
+          }
+          if (value !== lastCookies[name]) {
             $browser.cookies(name, value);
             updated = true;
           }