} watchExpressions Array of expressions that will be individually\n * watched using {@link ng.$rootScope.Scope#$watch $watch()}\n *\n * @param {function(newValues, oldValues, scope)} listener Callback called whenever the return value of any\n * expression in `watchExpressions` changes\n * The `newValues` array contains the current values of the `watchExpressions`, with the indexes matching\n * those of `watchExpression`\n * and the `oldValues` array contains the previous values of the `watchExpressions`, with the indexes matching\n * those of `watchExpression`\n * The `scope` refers to the current scope.\n * @returns {function()} Returns a de-registration function for all listeners.\n */\n $watchGroup: function(watchExpressions, listener) {\n var oldValues = new Array(watchExpressions.length);\n var newValues = new Array(watchExpressions.length);\n var deregisterFns = [];\n var self = this;\n var changeReactionScheduled = false;\n var firstRun = true;\n\n if (!watchExpressions.length) {\n // No expressions means we call the listener ASAP\n var shouldCall = true;\n self.$evalAsync(function() {\n if (shouldCall) listener(newValues, newValues, self);\n });\n return function deregisterWatchGroup() {\n shouldCall = false;\n };\n }\n\n if (watchExpressions.length === 1) {\n // Special case size of one\n return this.$watch(watchExpressions[0], function watchGroupAction(value, oldValue, scope) {\n newValues[0] = value;\n oldValues[0] = oldValue;\n listener(newValues, (value === oldValue) ? newValues : oldValues, scope);\n });\n }\n\n forEach(watchExpressions, function(expr, i) {\n var unwatchFn = self.$watch(expr, function watchGroupSubAction(value) {\n newValues[i] = value;\n if (!changeReactionScheduled) {\n changeReactionScheduled = true;\n self.$evalAsync(watchGroupAction);\n }\n });\n deregisterFns.push(unwatchFn);\n });\n\n function watchGroupAction() {\n changeReactionScheduled = false;\n\n try {\n if (firstRun) {\n firstRun = false;\n listener(newValues, newValues, self);\n } else {\n listener(newValues, oldValues, self);\n }\n } finally {\n for (var i = 0; i < watchExpressions.length; i++) {\n oldValues[i] = newValues[i];\n }\n }\n }\n\n return function deregisterWatchGroup() {\n while (deregisterFns.length) {\n deregisterFns.shift()();\n }\n };\n },\n\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$watchCollection\n * @kind function\n *\n * @description\n * Shallow watches the properties of an object and fires whenever any of the properties change\n * (for arrays, this implies watching the array items; for object maps, this implies watching\n * the properties). If a change is detected, the `listener` callback is fired.\n *\n * - The `obj` collection is observed via standard $watch operation and is examined on every\n * call to $digest() to see if any items have been added, removed, or moved.\n * - The `listener` is called whenever anything within the `obj` has changed. Examples include\n * adding, removing, and moving items belonging to an object or array.\n *\n *\n * @example\n * ```js\n $scope.names = ['igor', 'matias', 'misko', 'james'];\n $scope.dataCount = 4;\n\n $scope.$watchCollection('names', function(newNames, oldNames) {\n $scope.dataCount = newNames.length;\n });\n\n expect($scope.dataCount).toEqual(4);\n $scope.$digest();\n\n //still at 4 ... no changes\n expect($scope.dataCount).toEqual(4);\n\n $scope.names.pop();\n $scope.$digest();\n\n //now there's been a change\n expect($scope.dataCount).toEqual(3);\n * ```\n *\n *\n * @param {string|function(scope)} obj Evaluated as {@link guide/expression expression}. The\n * expression value should evaluate to an object or an array which is observed on each\n * {@link ng.$rootScope.Scope#$digest $digest} cycle. Any shallow change within the\n * collection will trigger a call to the `listener`.\n *\n * @param {function(newCollection, oldCollection, scope)} listener a callback function called\n * when a change is detected.\n * - The `newCollection` object is the newly modified data obtained from the `obj` expression\n * - The `oldCollection` object is a copy of the former collection data.\n * Due to performance considerations, the`oldCollection` value is computed only if the\n * `listener` function declares two or more arguments.\n * - The `scope` argument refers to the current scope.\n *\n * @returns {function()} Returns a de-registration function for this listener. When the\n * de-registration function is executed, the internal watch operation is terminated.\n */\n $watchCollection: function(obj, listener) {\n // Mark the interceptor as\n // ... $$pure when literal since the instance will change when any input changes\n $watchCollectionInterceptor.$$pure = $parse(obj).literal;\n // ... $stateful when non-literal since we must read the state of the collection\n $watchCollectionInterceptor.$stateful = !$watchCollectionInterceptor.$$pure;\n\n var self = this;\n // the current value, updated on each dirty-check run\n var newValue;\n // a shallow copy of the newValue from the last dirty-check run,\n // updated to match newValue during dirty-check run\n var oldValue;\n // a shallow copy of the newValue from when the last change happened\n var veryOldValue;\n // only track veryOldValue if the listener is asking for it\n var trackVeryOldValue = (listener.length > 1);\n var changeDetected = 0;\n var changeDetector = $parse(obj, $watchCollectionInterceptor);\n var internalArray = [];\n var internalObject = {};\n var initRun = true;\n var oldLength = 0;\n\n function $watchCollectionInterceptor(_value) {\n newValue = _value;\n var newLength, key, bothNaN, newItem, oldItem;\n\n // If the new value is undefined, then return undefined as the watch may be a one-time watch\n if (isUndefined(newValue)) return;\n\n if (!isObject(newValue)) { // if primitive\n if (oldValue !== newValue) {\n oldValue = newValue;\n changeDetected++;\n }\n } else if (isArrayLike(newValue)) {\n if (oldValue !== internalArray) {\n // we are transitioning from something which was not an array into array.\n oldValue = internalArray;\n oldLength = oldValue.length = 0;\n changeDetected++;\n }\n\n newLength = newValue.length;\n\n if (oldLength !== newLength) {\n // if lengths do not match we need to trigger change notification\n changeDetected++;\n oldValue.length = oldLength = newLength;\n }\n // copy the items to oldValue and look for changes.\n for (var i = 0; i < newLength; i++) {\n oldItem = oldValue[i];\n newItem = newValue[i];\n\n // eslint-disable-next-line no-self-compare\n bothNaN = (oldItem !== oldItem) && (newItem !== newItem);\n if (!bothNaN && (oldItem !== newItem)) {\n changeDetected++;\n oldValue[i] = newItem;\n }\n }\n } else {\n if (oldValue !== internalObject) {\n // we are transitioning from something which was not an object into object.\n oldValue = internalObject = {};\n oldLength = 0;\n changeDetected++;\n }\n // copy the items to oldValue and look for changes.\n newLength = 0;\n for (key in newValue) {\n if (hasOwnProperty.call(newValue, key)) {\n newLength++;\n newItem = newValue[key];\n oldItem = oldValue[key];\n\n if (key in oldValue) {\n // eslint-disable-next-line no-self-compare\n bothNaN = (oldItem !== oldItem) && (newItem !== newItem);\n if (!bothNaN && (oldItem !== newItem)) {\n changeDetected++;\n oldValue[key] = newItem;\n }\n } else {\n oldLength++;\n oldValue[key] = newItem;\n changeDetected++;\n }\n }\n }\n if (oldLength > newLength) {\n // we used to have more keys, need to find them and destroy them.\n changeDetected++;\n for (key in oldValue) {\n if (!hasOwnProperty.call(newValue, key)) {\n oldLength--;\n delete oldValue[key];\n }\n }\n }\n }\n return changeDetected;\n }\n\n function $watchCollectionAction() {\n if (initRun) {\n initRun = false;\n listener(newValue, newValue, self);\n } else {\n listener(newValue, veryOldValue, self);\n }\n\n // make a copy for the next time a collection is changed\n if (trackVeryOldValue) {\n if (!isObject(newValue)) {\n //primitive\n veryOldValue = newValue;\n } else if (isArrayLike(newValue)) {\n veryOldValue = new Array(newValue.length);\n for (var i = 0; i < newValue.length; i++) {\n veryOldValue[i] = newValue[i];\n }\n } else { // if object\n veryOldValue = {};\n for (var key in newValue) {\n if (hasOwnProperty.call(newValue, key)) {\n veryOldValue[key] = newValue[key];\n }\n }\n }\n }\n }\n\n return this.$watch(changeDetector, $watchCollectionAction);\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$digest\n * @kind function\n *\n * @description\n * Processes all of the {@link ng.$rootScope.Scope#$watch watchers} of the current scope and\n * its children. Because a {@link ng.$rootScope.Scope#$watch watcher}'s listener can change\n * the model, the `$digest()` keeps calling the {@link ng.$rootScope.Scope#$watch watchers}\n * until no more listeners are firing. This means that it is possible to get into an infinite\n * loop. This function will throw `'Maximum iteration limit exceeded.'` if the number of\n * iterations exceeds 10.\n *\n * Usually, you don't call `$digest()` directly in\n * {@link ng.directive:ngController controllers} or in\n * {@link ng.$compileProvider#directive directives}.\n * Instead, you should call {@link ng.$rootScope.Scope#$apply $apply()} (typically from within\n * a {@link ng.$compileProvider#directive directive}), which will force a `$digest()`.\n *\n * If you want to be notified whenever `$digest()` is called,\n * you can register a `watchExpression` function with\n * {@link ng.$rootScope.Scope#$watch $watch()} with no `listener`.\n *\n * In unit tests, you may need to call `$digest()` to simulate the scope life cycle.\n *\n * @example\n * ```js\n var scope = ...;\n scope.name = 'misko';\n scope.counter = 0;\n\n expect(scope.counter).toEqual(0);\n scope.$watch('name', function(newValue, oldValue) {\n scope.counter = scope.counter + 1;\n });\n expect(scope.counter).toEqual(0);\n\n scope.$digest();\n // the listener is always called during the first $digest loop after it was registered\n expect(scope.counter).toEqual(1);\n\n scope.$digest();\n // but now it will not be called unless the value changes\n expect(scope.counter).toEqual(1);\n\n scope.name = 'adam';\n scope.$digest();\n expect(scope.counter).toEqual(2);\n * ```\n *\n */\n $digest: function() {\n var watch, value, last, fn, get,\n watchers,\n dirty, ttl = TTL,\n next, current, target = asyncQueue.length ? $rootScope : this,\n watchLog = [],\n logIdx, asyncTask;\n\n beginPhase('$digest');\n // Check for changes to browser url that happened in sync before the call to $digest\n $browser.$$checkUrlChange();\n\n if (this === $rootScope && applyAsyncId !== null) {\n // If this is the root scope, and $applyAsync has scheduled a deferred $apply(), then\n // cancel the scheduled $apply and flush the queue of expressions to be evaluated.\n $browser.defer.cancel(applyAsyncId);\n flushApplyAsync();\n }\n\n lastDirtyWatch = null;\n\n do { // \"while dirty\" loop\n dirty = false;\n current = target;\n\n // It's safe for asyncQueuePosition to be a local variable here because this loop can't\n // be reentered recursively. Calling $digest from a function passed to $evalAsync would\n // lead to a '$digest already in progress' error.\n for (var asyncQueuePosition = 0; asyncQueuePosition < asyncQueue.length; asyncQueuePosition++) {\n try {\n asyncTask = asyncQueue[asyncQueuePosition];\n fn = asyncTask.fn;\n fn(asyncTask.scope, asyncTask.locals);\n } catch (e) {\n $exceptionHandler(e);\n }\n lastDirtyWatch = null;\n }\n asyncQueue.length = 0;\n\n traverseScopesLoop:\n do { // \"traverse the scopes\" loop\n if ((watchers = !current.$$suspended && current.$$watchers)) {\n // process our watches\n watchers.$$digestWatchIndex = watchers.length;\n while (watchers.$$digestWatchIndex--) {\n try {\n watch = watchers[watchers.$$digestWatchIndex];\n // Most common watches are on primitives, in which case we can short\n // circuit it with === operator, only when === fails do we use .equals\n if (watch) {\n get = watch.get;\n if ((value = get(current)) !== (last = watch.last) &&\n !(watch.eq\n ? equals(value, last)\n : (isNumberNaN(value) && isNumberNaN(last)))) {\n dirty = true;\n lastDirtyWatch = watch;\n watch.last = watch.eq ? copy(value, null) : value;\n fn = watch.fn;\n fn(value, ((last === initWatchVal) ? value : last), current);\n if (ttl < 5) {\n logIdx = 4 - ttl;\n if (!watchLog[logIdx]) watchLog[logIdx] = [];\n watchLog[logIdx].push({\n msg: isFunction(watch.exp) ? 'fn: ' + (watch.exp.name || watch.exp.toString()) : watch.exp,\n newVal: value,\n oldVal: last\n });\n }\n } else if (watch === lastDirtyWatch) {\n // If the most recently dirty watcher is now clean, short circuit since the remaining watchers\n // have already been tested.\n dirty = false;\n break traverseScopesLoop;\n }\n }\n } catch (e) {\n $exceptionHandler(e);\n }\n }\n }\n\n // Insanity Warning: scope depth-first traversal\n // yes, this code is a bit crazy, but it works and we have tests to prove it!\n // this piece should be kept in sync with the traversal in $broadcast\n // (though it differs due to having the extra check for $$suspended and does not\n // check $$listenerCount)\n if (!(next = ((!current.$$suspended && current.$$watchersCount && current.$$childHead) ||\n (current !== target && current.$$nextSibling)))) {\n while (current !== target && !(next = current.$$nextSibling)) {\n current = current.$parent;\n }\n }\n } while ((current = next));\n\n // `break traverseScopesLoop;` takes us to here\n\n if ((dirty || asyncQueue.length) && !(ttl--)) {\n clearPhase();\n throw $rootScopeMinErr('infdig',\n '{0} $digest() iterations reached. Aborting!\\n' +\n 'Watchers fired in the last 5 iterations: {1}',\n TTL, watchLog);\n }\n\n } while (dirty || asyncQueue.length);\n\n clearPhase();\n\n // postDigestQueuePosition isn't local here because this loop can be reentered recursively.\n while (postDigestQueuePosition < postDigestQueue.length) {\n try {\n postDigestQueue[postDigestQueuePosition++]();\n } catch (e) {\n $exceptionHandler(e);\n }\n }\n postDigestQueue.length = postDigestQueuePosition = 0;\n\n // Check for changes to browser url that happened during the $digest\n // (for which no event is fired; e.g. via `history.pushState()`)\n $browser.$$checkUrlChange();\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$suspend\n * @kind function\n *\n * @description\n * Suspend watchers of this scope subtree so that they will not be invoked during digest.\n *\n * This can be used to optimize your application when you know that running those watchers\n * is redundant.\n *\n * **Warning**\n *\n * Suspending scopes from the digest cycle can have unwanted and difficult to debug results.\n * Only use this approach if you are confident that you know what you are doing and have\n * ample tests to ensure that bindings get updated as you expect.\n *\n * Some of the things to consider are:\n *\n * * Any external event on a directive/component will not trigger a digest while the hosting\n * scope is suspended - even if the event handler calls `$apply()` or `$rootScope.$digest()`.\n * * Transcluded content exists on a scope that inherits from outside a directive but exists\n * as a child of the directive's containing scope. If the containing scope is suspended the\n * transcluded scope will also be suspended, even if the scope from which the transcluded\n * scope inherits is not suspended.\n * * Multiple directives trying to manage the suspended status of a scope can confuse each other:\n * * A call to `$suspend()` on an already suspended scope is a no-op.\n * * A call to `$resume()` on a non-suspended scope is a no-op.\n * * If two directives suspend a scope, then one of them resumes the scope, the scope will no\n * longer be suspended. This could result in the other directive believing a scope to be\n * suspended when it is not.\n * * If a parent scope is suspended then all its descendants will be also excluded from future\n * digests whether or not they have been suspended themselves. Note that this also applies to\n * isolate child scopes.\n * * Calling `$digest()` directly on a descendant of a suspended scope will still run the watchers\n * for that scope and its descendants. When digesting we only check whether the current scope is\n * locally suspended, rather than checking whether it has a suspended ancestor.\n * * Calling `$resume()` on a scope that has a suspended ancestor will not cause the scope to be\n * included in future digests until all its ancestors have been resumed.\n * * Resolved promises, e.g. from explicit `$q` deferreds and `$http` calls, trigger `$apply()`\n * against the `$rootScope` and so will still trigger a global digest even if the promise was\n * initiated by a component that lives on a suspended scope.\n */\n $suspend: function() {\n this.$$suspended = true;\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$isSuspended\n * @kind function\n *\n * @description\n * Call this method to determine if this scope has been explicitly suspended. It will not\n * tell you whether an ancestor has been suspended.\n * To determine if this scope will be excluded from a digest triggered at the $rootScope,\n * for example, you must check all its ancestors:\n *\n * ```\n * function isExcludedFromDigest(scope) {\n * while(scope) {\n * if (scope.$isSuspended()) return true;\n * scope = scope.$parent;\n * }\n * return false;\n * ```\n *\n * Be aware that a scope may not be included in digests if it has a suspended ancestor,\n * even if `$isSuspended()` returns false.\n *\n * @returns true if the current scope has been suspended.\n */\n $isSuspended: function() {\n return this.$$suspended;\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$resume\n * @kind function\n *\n * @description\n * Resume watchers of this scope subtree in case it was suspended.\n *\n * See {@link $rootScope.Scope#$suspend} for information about the dangers of using this approach.\n */\n $resume: function() {\n this.$$suspended = false;\n },\n\n /**\n * @ngdoc event\n * @name $rootScope.Scope#$destroy\n * @eventType broadcast on scope being destroyed\n *\n * @description\n * Broadcasted when a scope and its children are being destroyed.\n *\n * Note that, in AngularJS, there is also a `$destroy` jQuery event, which can be used to\n * clean up DOM bindings before an element is removed from the DOM.\n */\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$destroy\n * @kind function\n *\n * @description\n * Removes the current scope (and all of its children) from the parent scope. Removal implies\n * that calls to {@link ng.$rootScope.Scope#$digest $digest()} will no longer\n * propagate to the current scope and its children. Removal also implies that the current\n * scope is eligible for garbage collection.\n *\n * The `$destroy()` is usually used by directives such as\n * {@link ng.directive:ngRepeat ngRepeat} for managing the\n * unrolling of the loop.\n *\n * Just before a scope is destroyed, a `$destroy` event is broadcasted on this scope.\n * Application code can register a `$destroy` event handler that will give it a chance to\n * perform any necessary cleanup.\n *\n * Note that, in AngularJS, there is also a `$destroy` jQuery event, which can be used to\n * clean up DOM bindings before an element is removed from the DOM.\n */\n $destroy: function() {\n // We can't destroy a scope that has been already destroyed.\n if (this.$$destroyed) return;\n var parent = this.$parent;\n\n this.$broadcast('$destroy');\n this.$$destroyed = true;\n\n if (this === $rootScope) {\n //Remove handlers attached to window when $rootScope is removed\n $browser.$$applicationDestroyed();\n }\n\n incrementWatchersCount(this, -this.$$watchersCount);\n for (var eventName in this.$$listenerCount) {\n decrementListenerCount(this, this.$$listenerCount[eventName], eventName);\n }\n\n // sever all the references to parent scopes (after this cleanup, the current scope should\n // not be retained by any of our references and should be eligible for garbage collection)\n if (parent && parent.$$childHead === this) parent.$$childHead = this.$$nextSibling;\n if (parent && parent.$$childTail === this) parent.$$childTail = this.$$prevSibling;\n if (this.$$prevSibling) this.$$prevSibling.$$nextSibling = this.$$nextSibling;\n if (this.$$nextSibling) this.$$nextSibling.$$prevSibling = this.$$prevSibling;\n\n // Disable listeners, watchers and apply/digest methods\n this.$destroy = this.$digest = this.$apply = this.$evalAsync = this.$applyAsync = noop;\n this.$on = this.$watch = this.$watchGroup = function() { return noop; };\n this.$$listeners = {};\n\n // Disconnect the next sibling to prevent `cleanUpScope` destroying those too\n this.$$nextSibling = null;\n cleanUpScope(this);\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$eval\n * @kind function\n *\n * @description\n * Executes the `expression` on the current scope and returns the result. Any exceptions in\n * the expression are propagated (uncaught). This is useful when evaluating AngularJS\n * expressions.\n *\n * @example\n * ```js\n var scope = ng.$rootScope.Scope();\n scope.a = 1;\n scope.b = 2;\n\n expect(scope.$eval('a+b')).toEqual(3);\n expect(scope.$eval(function(scope){ return scope.a + scope.b; })).toEqual(3);\n * ```\n *\n * @param {(string|function())=} expression An AngularJS expression to be executed.\n *\n * - `string`: execute using the rules as defined in {@link guide/expression expression}.\n * - `function(scope)`: execute the function with the current `scope` parameter.\n *\n * @param {(object)=} locals Local variables object, useful for overriding values in scope.\n * @returns {*} The result of evaluating the expression.\n */\n $eval: function(expr, locals) {\n return $parse(expr)(this, locals);\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$evalAsync\n * @kind function\n *\n * @description\n * Executes the expression on the current scope at a later point in time.\n *\n * The `$evalAsync` makes no guarantees as to when the `expression` will be executed, only\n * that:\n *\n * - it will execute after the function that scheduled the evaluation (preferably before DOM\n * rendering).\n * - at least one {@link ng.$rootScope.Scope#$digest $digest cycle} will be performed after\n * `expression` execution.\n *\n * Any exceptions from the execution of the expression are forwarded to the\n * {@link ng.$exceptionHandler $exceptionHandler} service.\n *\n * __Note:__ if this function is called outside of a `$digest` cycle, a new `$digest` cycle\n * will be scheduled. However, it is encouraged to always call code that changes the model\n * from within an `$apply` call. That includes code evaluated via `$evalAsync`.\n *\n * @param {(string|function())=} expression An AngularJS expression to be executed.\n *\n * - `string`: execute using the rules as defined in {@link guide/expression expression}.\n * - `function(scope)`: execute the function with the current `scope` parameter.\n *\n * @param {(object)=} locals Local variables object, useful for overriding values in scope.\n */\n $evalAsync: function(expr, locals) {\n // if we are outside of an $digest loop and this is the first time we are scheduling async\n // task also schedule async auto-flush\n if (!$rootScope.$$phase && !asyncQueue.length) {\n $browser.defer(function() {\n if (asyncQueue.length) {\n $rootScope.$digest();\n }\n }, null, '$evalAsync');\n }\n\n asyncQueue.push({scope: this, fn: $parse(expr), locals: locals});\n },\n\n $$postDigest: function(fn) {\n postDigestQueue.push(fn);\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$apply\n * @kind function\n *\n * @description\n * `$apply()` is used to execute an expression in AngularJS from outside of the AngularJS\n * framework. (For example from browser DOM events, setTimeout, XHR or third party libraries).\n * Because we are calling into the AngularJS framework we need to perform proper scope life\n * cycle of {@link ng.$exceptionHandler exception handling},\n * {@link ng.$rootScope.Scope#$digest executing watches}.\n *\n * **Life cycle: Pseudo-Code of `$apply()`**\n *\n * ```js\n function $apply(expr) {\n try {\n return $eval(expr);\n } catch (e) {\n $exceptionHandler(e);\n } finally {\n $root.$digest();\n }\n }\n * ```\n *\n *\n * Scope's `$apply()` method transitions through the following stages:\n *\n * 1. The {@link guide/expression expression} is executed using the\n * {@link ng.$rootScope.Scope#$eval $eval()} method.\n * 2. Any exceptions from the execution of the expression are forwarded to the\n * {@link ng.$exceptionHandler $exceptionHandler} service.\n * 3. The {@link ng.$rootScope.Scope#$watch watch} listeners are fired immediately after the\n * expression was executed using the {@link ng.$rootScope.Scope#$digest $digest()} method.\n *\n *\n * @param {(string|function())=} exp An AngularJS expression to be executed.\n *\n * - `string`: execute using the rules as defined in {@link guide/expression expression}.\n * - `function(scope)`: execute the function with current `scope` parameter.\n *\n * @returns {*} The result of evaluating the expression.\n */\n $apply: function(expr) {\n try {\n beginPhase('$apply');\n try {\n return this.$eval(expr);\n } finally {\n clearPhase();\n }\n } catch (e) {\n $exceptionHandler(e);\n } finally {\n try {\n $rootScope.$digest();\n } catch (e) {\n $exceptionHandler(e);\n // eslint-disable-next-line no-unsafe-finally\n throw e;\n }\n }\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$applyAsync\n * @kind function\n *\n * @description\n * Schedule the invocation of $apply to occur at a later time. The actual time difference\n * varies across browsers, but is typically around ~10 milliseconds.\n *\n * This can be used to queue up multiple expressions which need to be evaluated in the same\n * digest.\n *\n * @param {(string|function())=} exp An AngularJS expression to be executed.\n *\n * - `string`: execute using the rules as defined in {@link guide/expression expression}.\n * - `function(scope)`: execute the function with current `scope` parameter.\n */\n $applyAsync: function(expr) {\n var scope = this;\n if (expr) {\n applyAsyncQueue.push($applyAsyncExpression);\n }\n expr = $parse(expr);\n scheduleApplyAsync();\n\n function $applyAsyncExpression() {\n scope.$eval(expr);\n }\n },\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$on\n * @kind function\n *\n * @description\n * Listens on events of a given type. See {@link ng.$rootScope.Scope#$emit $emit} for\n * discussion of event life cycle.\n *\n * The event listener function format is: `function(event, args...)`. The `event` object\n * passed into the listener has the following attributes:\n *\n * - `targetScope` - `{Scope}`: the scope on which the event was `$emit`-ed or\n * `$broadcast`-ed.\n * - `currentScope` - `{Scope}`: the scope that is currently handling the event. Once the\n * event propagates through the scope hierarchy, this property is set to null.\n * - `name` - `{string}`: name of the event.\n * - `stopPropagation` - `{function=}`: calling `stopPropagation` function will cancel\n * further event propagation (available only for events that were `$emit`-ed).\n * - `preventDefault` - `{function}`: calling `preventDefault` sets `defaultPrevented` flag\n * to true.\n * - `defaultPrevented` - `{boolean}`: true if `preventDefault` was called.\n *\n * @param {string} name Event name to listen on.\n * @param {function(event, ...args)} listener Function to call when the event is emitted.\n * @returns {function()} Returns a deregistration function for this listener.\n */\n $on: function(name, listener) {\n var namedListeners = this.$$listeners[name];\n if (!namedListeners) {\n this.$$listeners[name] = namedListeners = [];\n }\n namedListeners.push(listener);\n\n var current = this;\n do {\n if (!current.$$listenerCount[name]) {\n current.$$listenerCount[name] = 0;\n }\n current.$$listenerCount[name]++;\n } while ((current = current.$parent));\n\n var self = this;\n return function() {\n var indexOfListener = namedListeners.indexOf(listener);\n if (indexOfListener !== -1) {\n // Use delete in the hope of the browser deallocating the memory for the array entry,\n // while not shifting the array indexes of other listeners.\n // See issue https://github.com/angular/angular.js/issues/16135\n delete namedListeners[indexOfListener];\n decrementListenerCount(self, 1, name);\n }\n };\n },\n\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$emit\n * @kind function\n *\n * @description\n * Dispatches an event `name` upwards through the scope hierarchy notifying the\n * registered {@link ng.$rootScope.Scope#$on} listeners.\n *\n * The event life cycle starts at the scope on which `$emit` was called. All\n * {@link ng.$rootScope.Scope#$on listeners} listening for `name` event on this scope get\n * notified. Afterwards, the event traverses upwards toward the root scope and calls all\n * registered listeners along the way. The event will stop propagating if one of the listeners\n * cancels it.\n *\n * Any exception emitted from the {@link ng.$rootScope.Scope#$on listeners} will be passed\n * onto the {@link ng.$exceptionHandler $exceptionHandler} service.\n *\n * @param {string} name Event name to emit.\n * @param {...*} args Optional one or more arguments which will be passed onto the event listeners.\n * @return {Object} Event object (see {@link ng.$rootScope.Scope#$on}).\n */\n $emit: function(name, args) {\n var empty = [],\n namedListeners,\n scope = this,\n stopPropagation = false,\n event = {\n name: name,\n targetScope: scope,\n stopPropagation: function() {stopPropagation = true;},\n preventDefault: function() {\n event.defaultPrevented = true;\n },\n defaultPrevented: false\n },\n listenerArgs = concat([event], arguments, 1),\n i, length;\n\n do {\n namedListeners = scope.$$listeners[name] || empty;\n event.currentScope = scope;\n for (i = 0, length = namedListeners.length; i < length; i++) {\n\n // if listeners were deregistered, defragment the array\n if (!namedListeners[i]) {\n namedListeners.splice(i, 1);\n i--;\n length--;\n continue;\n }\n try {\n //allow all listeners attached to the current scope to run\n namedListeners[i].apply(null, listenerArgs);\n } catch (e) {\n $exceptionHandler(e);\n }\n }\n //if any listener on the current scope stops propagation, prevent bubbling\n if (stopPropagation) {\n break;\n }\n //traverse upwards\n scope = scope.$parent;\n } while (scope);\n\n event.currentScope = null;\n\n return event;\n },\n\n\n /**\n * @ngdoc method\n * @name $rootScope.Scope#$broadcast\n * @kind function\n *\n * @description\n * Dispatches an event `name` downwards to all child scopes (and their children) notifying the\n * registered {@link ng.$rootScope.Scope#$on} listeners.\n *\n * The event life cycle starts at the scope on which `$broadcast` was called. All\n * {@link ng.$rootScope.Scope#$on listeners} listening for `name` event on this scope get\n * notified. Afterwards, the event propagates to all direct and indirect scopes of the current\n * scope and calls all registered listeners along the way. The event cannot be canceled.\n *\n * Any exception emitted from the {@link ng.$rootScope.Scope#$on listeners} will be passed\n * onto the {@link ng.$exceptionHandler $exceptionHandler} service.\n *\n * @param {string} name Event name to broadcast.\n * @param {...*} args Optional one or more arguments which will be passed onto the event listeners.\n * @return {Object} Event object, see {@link ng.$rootScope.Scope#$on}\n */\n $broadcast: function(name, args) {\n var target = this,\n current = target,\n next = target,\n event = {\n name: name,\n targetScope: target,\n preventDefault: function() {\n event.defaultPrevented = true;\n },\n defaultPrevented: false\n };\n\n if (!target.$$listenerCount[name]) return event;\n\n var listenerArgs = concat([event], arguments, 1),\n listeners, i, length;\n\n //down while you can, then up and next sibling or up and next sibling until back at root\n while ((current = next)) {\n event.currentScope = current;\n listeners = current.$$listeners[name] || [];\n for (i = 0, length = listeners.length; i < length; i++) {\n // if listeners were deregistered, defragment the array\n if (!listeners[i]) {\n listeners.splice(i, 1);\n i--;\n length--;\n continue;\n }\n\n try {\n listeners[i].apply(null, listenerArgs);\n } catch (e) {\n $exceptionHandler(e);\n }\n }\n\n // Insanity Warning: scope depth-first traversal\n // yes, this code is a bit crazy, but it works and we have tests to prove it!\n // this piece should be kept in sync with the traversal in $digest\n // (though it differs due to having the extra check for $$listenerCount and\n // does not check $$suspended)\n if (!(next = ((current.$$listenerCount[name] && current.$$childHead) ||\n (current !== target && current.$$nextSibling)))) {\n while (current !== target && !(next = current.$$nextSibling)) {\n current = current.$parent;\n }\n }\n }\n\n event.currentScope = null;\n return event;\n }\n };\n\n var $rootScope = new Scope();\n\n //The internal queues. Expose them on the $rootScope for debugging/testing purposes.\n var asyncQueue = $rootScope.$$asyncQueue = [];\n var postDigestQueue = $rootScope.$$postDigestQueue = [];\n var applyAsyncQueue = $rootScope.$$applyAsyncQueue = [];\n\n var postDigestQueuePosition = 0;\n\n return $rootScope;\n\n\n function beginPhase(phase) {\n if ($rootScope.$$phase) {\n throw $rootScopeMinErr('inprog', '{0} already in progress', $rootScope.$$phase);\n }\n\n $rootScope.$$phase = phase;\n }\n\n function clearPhase() {\n $rootScope.$$phase = null;\n }\n\n function incrementWatchersCount(current, count) {\n do {\n current.$$watchersCount += count;\n } while ((current = current.$parent));\n }\n\n function decrementListenerCount(current, count, name) {\n do {\n current.$$listenerCount[name] -= count;\n\n if (current.$$listenerCount[name] === 0) {\n delete current.$$listenerCount[name];\n }\n } while ((current = current.$parent));\n }\n\n /**\n * function used as an initial value for watchers.\n * because it's unique we can easily tell it apart from other values\n */\n function initWatchVal() {}\n\n function flushApplyAsync() {\n while (applyAsyncQueue.length) {\n try {\n applyAsyncQueue.shift()();\n } catch (e) {\n $exceptionHandler(e);\n }\n }\n applyAsyncId = null;\n }\n\n function scheduleApplyAsync() {\n if (applyAsyncId === null) {\n applyAsyncId = $browser.defer(function() {\n $rootScope.$apply(flushApplyAsync);\n }, null, '$applyAsync');\n }\n }\n }];\n}\n\n/**\n * @ngdoc service\n * @name $rootElement\n *\n * @description\n * The root element of AngularJS application. This is either the element where {@link\n * ng.directive:ngApp ngApp} was declared or the element passed into\n * {@link angular.bootstrap}. The element represents the root element of application. It is also the\n * location where the application's {@link auto.$injector $injector} service gets\n * published, and can be retrieved using `$rootElement.injector()`.\n */\n\n\n// the implementation is in angular.bootstrap\n\n/**\n * @this\n * @description\n * Private service to sanitize uris for links and images. Used by $compile and $sanitize.\n */\nfunction $$SanitizeUriProvider() {\n\n var aHrefSanitizationTrustedUrlList = /^\\s*(https?|s?ftp|mailto|tel|file):/,\n imgSrcSanitizationTrustedUrlList = /^\\s*((https?|ftp|file|blob):|data:image\\/)/;\n\n /**\n * @description\n * Retrieves or overrides the default regular expression that is used for determining trusted safe\n * urls during a[href] sanitization.\n *\n * The sanitization is a security measure aimed at prevent XSS attacks via HTML anchor links.\n *\n * Any url due to be assigned to an `a[href]` attribute via interpolation is marked as requiring\n * the $sce.URL security context. When interpolation occurs a call is made to `$sce.trustAsUrl(url)`\n * which in turn may call `$$sanitizeUri(url, isMedia)` to sanitize the potentially malicious URL.\n *\n * If the URL matches the `aHrefSanitizationTrustedUrlList` regular expression, it is returned unchanged.\n *\n * If there is no match the URL is returned prefixed with `'unsafe:'` to ensure that when it is written\n * to the DOM it is inactive and potentially malicious code will not be executed.\n *\n * @param {RegExp=} regexp New regexp to trust urls with.\n * @returns {RegExp|ng.$compileProvider} Current RegExp if called without value or self for\n * chaining otherwise.\n */\n this.aHrefSanitizationTrustedUrlList = function(regexp) {\n if (isDefined(regexp)) {\n aHrefSanitizationTrustedUrlList = regexp;\n return this;\n }\n return aHrefSanitizationTrustedUrlList;\n };\n\n\n /**\n * @description\n * Retrieves or overrides the default regular expression that is used for determining trusted safe\n * urls during img[src] sanitization.\n *\n * The sanitization is a security measure aimed at prevent XSS attacks via HTML image src links.\n *\n * Any URL due to be assigned to an `img[src]` attribute via interpolation is marked as requiring\n * the $sce.MEDIA_URL security context. When interpolation occurs a call is made to\n * `$sce.trustAsMediaUrl(url)` which in turn may call `$$sanitizeUri(url, isMedia)` to sanitize\n * the potentially malicious URL.\n *\n * If the URL matches the `imgSrcSanitizationTrustedUrlList` regular expression, it is returned\n * unchanged.\n *\n * If there is no match the URL is returned prefixed with `'unsafe:'` to ensure that when it is written\n * to the DOM it is inactive and potentially malicious code will not be executed.\n *\n * @param {RegExp=} regexp New regexp to trust urls with.\n * @returns {RegExp|ng.$compileProvider} Current RegExp if called without value or self for\n * chaining otherwise.\n */\n this.imgSrcSanitizationTrustedUrlList = function(regexp) {\n if (isDefined(regexp)) {\n imgSrcSanitizationTrustedUrlList = regexp;\n return this;\n }\n return imgSrcSanitizationTrustedUrlList;\n };\n\n this.$get = function() {\n return function sanitizeUri(uri, isMediaUrl) {\n // if (!uri) return uri;\n var regex = isMediaUrl ? imgSrcSanitizationTrustedUrlList : aHrefSanitizationTrustedUrlList;\n var normalizedVal = urlResolve(uri && uri.trim()).href;\n if (normalizedVal !== '' && !normalizedVal.match(regex)) {\n return 'unsafe:' + normalizedVal;\n }\n return uri;\n };\n };\n}\n\n/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n * Any commits to this file should be reviewed with security in mind. *\n * Changes to this file can potentially create security vulnerabilities. *\n * An approval from 2 Core members with history of modifying *\n * this file is required. *\n * *\n * Does the change somehow allow for arbitrary javascript to be executed? *\n * Or allows for someone to change the prototype of built-in objects? *\n * Or gives undesired access to variables likes document or window? *\n * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */\n\n/* exported $SceProvider, $SceDelegateProvider */\n\nvar $sceMinErr = minErr('$sce');\n\nvar SCE_CONTEXTS = {\n // HTML is used when there's HTML rendered (e.g. ng-bind-html, iframe srcdoc binding).\n HTML: 'html',\n\n // Style statements or stylesheets. Currently unused in AngularJS.\n CSS: 'css',\n\n // An URL used in a context where it refers to the source of media, which are not expected to be run\n // as scripts, such as an image, audio, video, etc.\n MEDIA_URL: 'mediaUrl',\n\n // An URL used in a context where it does not refer to a resource that loads code.\n // A value that can be trusted as a URL can also trusted as a MEDIA_URL.\n URL: 'url',\n\n // RESOURCE_URL is a subtype of URL used where the referred-to resource could be interpreted as\n // code. (e.g. ng-include, script src binding, templateUrl)\n // A value that can be trusted as a RESOURCE_URL, can also trusted as a URL and a MEDIA_URL.\n RESOURCE_URL: 'resourceUrl',\n\n // Script. Currently unused in AngularJS.\n JS: 'js'\n};\n\n// Helper functions follow.\n\nvar UNDERSCORE_LOWERCASE_REGEXP = /_([a-z])/g;\n\nfunction snakeToCamel(name) {\n return name\n .replace(UNDERSCORE_LOWERCASE_REGEXP, fnCamelCaseReplace);\n}\n\nfunction adjustMatcher(matcher) {\n if (matcher === 'self') {\n return matcher;\n } else if (isString(matcher)) {\n // Strings match exactly except for 2 wildcards - '*' and '**'.\n // '*' matches any character except those from the set ':/.?&'.\n // '**' matches any character (like .* in a RegExp).\n // More than 2 *'s raises an error as it's ill defined.\n if (matcher.indexOf('***') > -1) {\n throw $sceMinErr('iwcard',\n 'Illegal sequence *** in string matcher. String: {0}', matcher);\n }\n matcher = escapeForRegexp(matcher).\n replace(/\\\\\\*\\\\\\*/g, '.*').\n replace(/\\\\\\*/g, '[^:/.?&;]*');\n return new RegExp('^' + matcher + '$');\n } else if (isRegExp(matcher)) {\n // The only other type of matcher allowed is a Regexp.\n // Match entire URL / disallow partial matches.\n // Flags are reset (i.e. no global, ignoreCase or multiline)\n return new RegExp('^' + matcher.source + '$');\n } else {\n throw $sceMinErr('imatcher',\n 'Matchers may only be \"self\", string patterns or RegExp objects');\n }\n}\n\n\nfunction adjustMatchers(matchers) {\n var adjustedMatchers = [];\n if (isDefined(matchers)) {\n forEach(matchers, function(matcher) {\n adjustedMatchers.push(adjustMatcher(matcher));\n });\n }\n return adjustedMatchers;\n}\n\n\n/**\n * @ngdoc service\n * @name $sceDelegate\n * @kind function\n *\n * @description\n *\n * `$sceDelegate` is a service that is used by the `$sce` service to provide {@link ng.$sce Strict\n * Contextual Escaping (SCE)} services to AngularJS.\n *\n * For an overview of this service and the functionnality it provides in AngularJS, see the main\n * page for {@link ng.$sce SCE}. The current page is targeted for developers who need to alter how\n * SCE works in their application, which shouldn't be needed in most cases.\n *\n * \n * AngularJS strongly relies on contextual escaping for the security of bindings: disabling or\n * modifying this might cause cross site scripting (XSS) vulnerabilities. For libraries owners,\n * changes to this service will also influence users, so be extra careful and document your changes.\n *
\n *\n * Typically, you would configure or override the {@link ng.$sceDelegate $sceDelegate} instead of\n * the `$sce` service to customize the way Strict Contextual Escaping works in AngularJS. This is\n * because, while the `$sce` provides numerous shorthand methods, etc., you really only need to\n * override 3 core functions (`trustAs`, `getTrusted` and `valueOf`) to replace the way things\n * work because `$sce` delegates to `$sceDelegate` for these operations.\n *\n * Refer {@link ng.$sceDelegateProvider $sceDelegateProvider} to configure this service.\n *\n * The default instance of `$sceDelegate` should work out of the box with little pain. While you\n * can override it completely to change the behavior of `$sce`, the common case would\n * involve configuring the {@link ng.$sceDelegateProvider $sceDelegateProvider} instead by setting\n * your own trusted and banned resource lists for trusting URLs used for loading AngularJS resources\n * such as templates. Refer {@link ng.$sceDelegateProvider#trustedResourceUrlList\n * $sceDelegateProvider.trustedResourceUrlList} and {@link\n * ng.$sceDelegateProvider#bannedResourceUrlList $sceDelegateProvider.bannedResourceUrlList}\n */\n\n/**\n * @ngdoc provider\n * @name $sceDelegateProvider\n * @this\n *\n * @description\n *\n * The `$sceDelegateProvider` provider allows developers to configure the {@link ng.$sceDelegate\n * $sceDelegate service}, used as a delegate for {@link ng.$sce Strict Contextual Escaping (SCE)}.\n *\n * The `$sceDelegateProvider` allows one to get/set the `trustedResourceUrlList` and\n * `bannedResourceUrlList` used to ensure that the URLs used for sourcing AngularJS templates and\n * other script-running URLs are safe (all places that use the `$sce.RESOURCE_URL` context). See\n * {@link ng.$sceDelegateProvider#trustedResourceUrlList\n * $sceDelegateProvider.trustedResourceUrlList} and\n * {@link ng.$sceDelegateProvider#bannedResourceUrlList $sceDelegateProvider.bannedResourceUrlList},\n *\n * For the general details about this service in AngularJS, read the main page for {@link ng.$sce\n * Strict Contextual Escaping (SCE)}.\n *\n * **Example**: Consider the following case. \n *\n * - your app is hosted at url `http://myapp.example.com/`\n * - but some of your templates are hosted on other domains you control such as\n * `http://srv01.assets.example.com/`, `http://srv02.assets.example.com/`, etc.\n * - and you have an open redirect at `http://myapp.example.com/clickThru?...`.\n *\n * Here is what a secure configuration for this scenario might look like:\n *\n * ```\n * angular.module('myApp', []).config(function($sceDelegateProvider) {\n * $sceDelegateProvider.trustedResourceUrlList([\n * // Allow same origin resource loads.\n * 'self',\n * // Allow loading from our assets domain. Notice the difference between * and **.\n * 'http://srv*.assets.example.com/**'\n * ]);\n *\n * // The banned resource URL list overrides the trusted resource URL list so the open redirect\n * // here is blocked.\n * $sceDelegateProvider.bannedResourceUrlList([\n * 'http://myapp.example.com/clickThru**'\n * ]);\n * });\n * ```\n * Note that an empty trusted resource URL list will block every resource URL from being loaded, and will require\n * you to manually mark each one as trusted with `$sce.trustAsResourceUrl`. However, templates\n * requested by {@link ng.$templateRequest $templateRequest} that are present in\n * {@link ng.$templateCache $templateCache} will not go through this check. If you have a mechanism\n * to populate your templates in that cache at config time, then it is a good idea to remove 'self'\n * from the trusted resource URL lsit. This helps to mitigate the security impact of certain types\n * of issues, like for instance attacker-controlled `ng-includes`.\n */\n\nfunction $SceDelegateProvider() {\n this.SCE_CONTEXTS = SCE_CONTEXTS;\n\n // Resource URLs can also be trusted by policy.\n var trustedResourceUrlList = ['self'],\n bannedResourceUrlList = [];\n\n /**\n * @ngdoc method\n * @name $sceDelegateProvider#trustedResourceUrlList\n * @kind function\n *\n * @param {Array=} trustedResourceUrlList When provided, replaces the trustedResourceUrlList with\n * the value provided. This must be an array or null. A snapshot of this array is used so\n * further changes to the array are ignored.\n * Follow {@link ng.$sce#resourceUrlPatternItem this link} for a description of the items\n * allowed in this array.\n *\n * @return {Array} The currently set trusted resource URL array.\n *\n * @description\n * Sets/Gets the list trusted of resource URLs.\n *\n * The **default value** when no `trustedResourceUrlList` has been explicitly set is `['self']`\n * allowing only same origin resource requests.\n *\n * \n * **Note:** the default `trustedResourceUrlList` of 'self' is not recommended if your app shares\n * its origin with other apps! It is a good idea to limit it to only your application's directory.\n *
\n */\n this.trustedResourceUrlList = function(value) {\n if (arguments.length) {\n trustedResourceUrlList = adjustMatchers(value);\n }\n return trustedResourceUrlList;\n };\n\n /**\n * @ngdoc method\n * @name $sceDelegateProvider#resourceUrlWhitelist\n * @kind function\n *\n * @deprecated\n * sinceVersion=\"1.8.1\"\n *\n * This method is deprecated. Use {@link $sceDelegateProvider#trustedResourceUrlList\n * trustedResourceUrlList} instead.\n */\n Object.defineProperty(this, 'resourceUrlWhitelist', {\n get: function() {\n return this.trustedResourceUrlList;\n },\n set: function(value) {\n this.trustedResourceUrlList = value;\n }\n });\n\n /**\n * @ngdoc method\n * @name $sceDelegateProvider#bannedResourceUrlList\n * @kind function\n *\n * @param {Array=} bannedResourceUrlList When provided, replaces the `bannedResourceUrlList` with\n * the value provided. This must be an array or null. A snapshot of this array is used so\n * further changes to the array are ignored.\n * Follow {@link ng.$sce#resourceUrlPatternItem this link} for a description of the items\n * allowed in this array.
\n * The typical usage for the `bannedResourceUrlList` is to **block\n * [open redirects](http://cwe.mitre.org/data/definitions/601.html)** served by your domain as\n * these would otherwise be trusted but actually return content from the redirected domain.\n *
\n * Finally, **the banned resource URL list overrides the trusted resource URL list** and has\n * the final say.\n *\n * @return {Array} The currently set `bannedResourceUrlList` array.\n *\n * @description\n * Sets/Gets the `bannedResourceUrlList` of trusted resource URLs.\n *\n * The **default value** when no trusted resource URL list has been explicitly set is the empty\n * array (i.e. there is no `bannedResourceUrlList`.)\n */\n this.bannedResourceUrlList = function(value) {\n if (arguments.length) {\n bannedResourceUrlList = adjustMatchers(value);\n }\n return bannedResourceUrlList;\n };\n\n /**\n * @ngdoc method\n * @name $sceDelegateProvider#resourceUrlBlacklist\n * @kind function\n *\n * @deprecated\n * sinceVersion=\"1.8.1\"\n *\n * This method is deprecated. Use {@link $sceDelegateProvider#bannedResourceUrlList\n * bannedResourceUrlList} instead.\n */\n Object.defineProperty(this, 'resourceUrlBlacklist', {\n get: function() {\n return this.bannedResourceUrlList;\n },\n set: function(value) {\n this.bannedResourceUrlList = value;\n }\n });\n\n this.$get = ['$injector', '$$sanitizeUri', function($injector, $$sanitizeUri) {\n\n var htmlSanitizer = function htmlSanitizer(html) {\n throw $sceMinErr('unsafe', 'Attempting to use an unsafe value in a safe context.');\n };\n\n if ($injector.has('$sanitize')) {\n htmlSanitizer = $injector.get('$sanitize');\n }\n\n\n function matchUrl(matcher, parsedUrl) {\n if (matcher === 'self') {\n return urlIsSameOrigin(parsedUrl) || urlIsSameOriginAsBaseUrl(parsedUrl);\n } else {\n // definitely a regex. See adjustMatchers()\n return !!matcher.exec(parsedUrl.href);\n }\n }\n\n function isResourceUrlAllowedByPolicy(url) {\n var parsedUrl = urlResolve(url.toString());\n var i, n, allowed = false;\n // Ensure that at least one item from the trusted resource URL list allows this url.\n for (i = 0, n = trustedResourceUrlList.length; i < n; i++) {\n if (matchUrl(trustedResourceUrlList[i], parsedUrl)) {\n allowed = true;\n break;\n }\n }\n if (allowed) {\n // Ensure that no item from the banned resource URL list has blocked this url.\n for (i = 0, n = bannedResourceUrlList.length; i < n; i++) {\n if (matchUrl(bannedResourceUrlList[i], parsedUrl)) {\n allowed = false;\n break;\n }\n }\n }\n return allowed;\n }\n\n function generateHolderType(Base) {\n var holderType = function TrustedValueHolderType(trustedValue) {\n this.$$unwrapTrustedValue = function() {\n return trustedValue;\n };\n };\n if (Base) {\n holderType.prototype = new Base();\n }\n holderType.prototype.valueOf = function sceValueOf() {\n return this.$$unwrapTrustedValue();\n };\n holderType.prototype.toString = function sceToString() {\n return this.$$unwrapTrustedValue().toString();\n };\n return holderType;\n }\n\n var trustedValueHolderBase = generateHolderType(),\n byType = {};\n\n byType[SCE_CONTEXTS.HTML] = generateHolderType(trustedValueHolderBase);\n byType[SCE_CONTEXTS.CSS] = generateHolderType(trustedValueHolderBase);\n byType[SCE_CONTEXTS.MEDIA_URL] = generateHolderType(trustedValueHolderBase);\n byType[SCE_CONTEXTS.URL] = generateHolderType(byType[SCE_CONTEXTS.MEDIA_URL]);\n byType[SCE_CONTEXTS.JS] = generateHolderType(trustedValueHolderBase);\n byType[SCE_CONTEXTS.RESOURCE_URL] = generateHolderType(byType[SCE_CONTEXTS.URL]);\n\n /**\n * @ngdoc method\n * @name $sceDelegate#trustAs\n *\n * @description\n * Returns a trusted representation of the parameter for the specified context. This trusted\n * object will later on be used as-is, without any security check, by bindings or directives\n * that require this security context.\n * For instance, marking a string as trusted for the `$sce.HTML` context will entirely bypass\n * the potential `$sanitize` call in corresponding `$sce.HTML` bindings or directives, such as\n * `ng-bind-html`. Note that in most cases you won't need to call this function: if you have the\n * sanitizer loaded, passing the value itself will render all the HTML that does not pose a\n * security risk.\n *\n * See {@link ng.$sceDelegate#getTrusted getTrusted} for the function that will consume those\n * trusted values, and {@link ng.$sce $sce} for general documentation about strict contextual\n * escaping.\n *\n * @param {string} type The context in which this value is safe for use, e.g. `$sce.URL`,\n * `$sce.RESOURCE_URL`, `$sce.HTML`, `$sce.JS` or `$sce.CSS`.\n *\n * @param {*} value The value that should be considered trusted.\n * @return {*} A trusted representation of value, that can be used in the given context.\n */\n function trustAs(type, trustedValue) {\n var Constructor = (byType.hasOwnProperty(type) ? byType[type] : null);\n if (!Constructor) {\n throw $sceMinErr('icontext',\n 'Attempted to trust a value in invalid context. Context: {0}; Value: {1}',\n type, trustedValue);\n }\n if (trustedValue === null || isUndefined(trustedValue) || trustedValue === '') {\n return trustedValue;\n }\n // All the current contexts in SCE_CONTEXTS happen to be strings. In order to avoid trusting\n // mutable objects, we ensure here that the value passed in is actually a string.\n if (typeof trustedValue !== 'string') {\n throw $sceMinErr('itype',\n 'Attempted to trust a non-string value in a content requiring a string: Context: {0}',\n type);\n }\n return new Constructor(trustedValue);\n }\n\n /**\n * @ngdoc method\n * @name $sceDelegate#valueOf\n *\n * @description\n * If the passed parameter had been returned by a prior call to {@link ng.$sceDelegate#trustAs\n * `$sceDelegate.trustAs`}, returns the value that had been passed to {@link\n * ng.$sceDelegate#trustAs `$sceDelegate.trustAs`}.\n *\n * If the passed parameter is not a value that had been returned by {@link\n * ng.$sceDelegate#trustAs `$sceDelegate.trustAs`}, it must be returned as-is.\n *\n * @param {*} value The result of a prior {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs`}\n * call or anything else.\n * @return {*} The `value` that was originally provided to {@link ng.$sceDelegate#trustAs\n * `$sceDelegate.trustAs`} if `value` is the result of such a call. Otherwise, returns\n * `value` unchanged.\n */\n function valueOf(maybeTrusted) {\n if (maybeTrusted instanceof trustedValueHolderBase) {\n return maybeTrusted.$$unwrapTrustedValue();\n } else {\n return maybeTrusted;\n }\n }\n\n /**\n * @ngdoc method\n * @name $sceDelegate#getTrusted\n *\n * @description\n * Given an object and a security context in which to assign it, returns a value that's safe to\n * use in this context, which was represented by the parameter. To do so, this function either\n * unwraps the safe type it has been given (for instance, a {@link ng.$sceDelegate#trustAs\n * `$sceDelegate.trustAs`} result), or it might try to sanitize the value given, depending on\n * the context and sanitizer availablility.\n *\n * The contexts that can be sanitized are $sce.MEDIA_URL, $sce.URL and $sce.HTML. The first two are available\n * by default, and the third one relies on the `$sanitize` service (which may be loaded through\n * the `ngSanitize` module). Furthermore, for $sce.RESOURCE_URL context, a plain string may be\n * accepted if the resource url policy defined by {@link ng.$sceDelegateProvider#trustedResourceUrlList\n * `$sceDelegateProvider.trustedResourceUrlList`} and {@link ng.$sceDelegateProvider#bannedResourceUrlList\n * `$sceDelegateProvider.bannedResourceUrlList`} accepts that resource.\n *\n * This function will throw if the safe type isn't appropriate for this context, or if the\n * value given cannot be accepted in the context (which might be caused by sanitization not\n * being available, or the value not being recognized as safe).\n *\n *
\n * Disabling auto-escaping is extremely dangerous, it usually creates a Cross Site Scripting\n * (XSS) vulnerability in your application.\n *
\n *\n * @param {string} type The context in which this value is to be used (such as `$sce.HTML`).\n * @param {*} maybeTrusted The result of a prior {@link ng.$sceDelegate#trustAs\n * `$sceDelegate.trustAs`} call, or anything else (which will not be considered trusted.)\n * @return {*} A version of the value that's safe to use in the given context, or throws an\n * exception if this is impossible.\n */\n function getTrusted(type, maybeTrusted) {\n if (maybeTrusted === null || isUndefined(maybeTrusted) || maybeTrusted === '') {\n return maybeTrusted;\n }\n var constructor = (byType.hasOwnProperty(type) ? byType[type] : null);\n // If maybeTrusted is a trusted class instance or subclass instance, then unwrap and return\n // as-is.\n if (constructor && maybeTrusted instanceof constructor) {\n return maybeTrusted.$$unwrapTrustedValue();\n }\n\n // If maybeTrusted is a trusted class instance but not of the correct trusted type\n // then unwrap it and allow it to pass through to the rest of the checks\n if (isFunction(maybeTrusted.$$unwrapTrustedValue)) {\n maybeTrusted = maybeTrusted.$$unwrapTrustedValue();\n }\n\n // If we get here, then we will either sanitize the value or throw an exception.\n if (type === SCE_CONTEXTS.MEDIA_URL || type === SCE_CONTEXTS.URL) {\n // we attempt to sanitize non-resource URLs\n return $$sanitizeUri(maybeTrusted.toString(), type === SCE_CONTEXTS.MEDIA_URL);\n } else if (type === SCE_CONTEXTS.RESOURCE_URL) {\n if (isResourceUrlAllowedByPolicy(maybeTrusted)) {\n return maybeTrusted;\n } else {\n throw $sceMinErr('insecurl',\n 'Blocked loading resource from url not allowed by $sceDelegate policy. URL: {0}',\n maybeTrusted.toString());\n }\n } else if (type === SCE_CONTEXTS.HTML) {\n // htmlSanitizer throws its own error when no sanitizer is available.\n return htmlSanitizer(maybeTrusted);\n }\n // Default error when the $sce service has no way to make the input safe.\n throw $sceMinErr('unsafe', 'Attempting to use an unsafe value in a safe context.');\n }\n\n return { trustAs: trustAs,\n getTrusted: getTrusted,\n valueOf: valueOf };\n }];\n}\n\n\n/**\n * @ngdoc provider\n * @name $sceProvider\n * @this\n *\n * @description\n *\n * The $sceProvider provider allows developers to configure the {@link ng.$sce $sce} service.\n * - enable/disable Strict Contextual Escaping (SCE) in a module\n * - override the default implementation with a custom delegate\n *\n * Read more about {@link ng.$sce Strict Contextual Escaping (SCE)}.\n */\n\n/**\n * @ngdoc service\n * @name $sce\n * @kind function\n *\n * @description\n *\n * `$sce` is a service that provides Strict Contextual Escaping services to AngularJS.\n *\n * ## Strict Contextual Escaping\n *\n * Strict Contextual Escaping (SCE) is a mode in which AngularJS constrains bindings to only render\n * trusted values. Its goal is to assist in writing code in a way that (a) is secure by default, and\n * (b) makes auditing for security vulnerabilities such as XSS, clickjacking, etc. a lot easier.\n *\n * ### Overview\n *\n * To systematically block XSS security bugs, AngularJS treats all values as untrusted by default in\n * HTML or sensitive URL bindings. When binding untrusted values, AngularJS will automatically\n * run security checks on them (sanitizations, trusted URL resource, depending on context), or throw\n * when it cannot guarantee the security of the result. That behavior depends strongly on contexts:\n * HTML can be sanitized, but template URLs cannot, for instance.\n *\n * To illustrate this, consider the `ng-bind-html` directive. It renders its value directly as HTML:\n * we call that the *context*. When given an untrusted input, AngularJS will attempt to sanitize it\n * before rendering if a sanitizer is available, and throw otherwise. To bypass sanitization and\n * render the input as-is, you will need to mark it as trusted for that context before attempting\n * to bind it.\n *\n * As of version 1.2, AngularJS ships with SCE enabled by default.\n *\n * ### In practice\n *\n * Here's an example of a binding in a privileged context:\n *\n * ```\n * \n * \n * ```\n *\n * Notice that `ng-bind-html` is bound to `userHtml` controlled by the user. With SCE\n * disabled, this application allows the user to render arbitrary HTML into the DIV, which would\n * be an XSS security bug. In a more realistic example, one may be rendering user comments, blog\n * articles, etc. via bindings. (HTML is just one example of a context where rendering user\n * controlled input creates security vulnerabilities.)\n *\n * For the case of HTML, you might use a library, either on the client side, or on the server side,\n * to sanitize unsafe HTML before binding to the value and rendering it in the document.\n *\n * How would you ensure that every place that used these types of bindings was bound to a value that\n * was sanitized by your library (or returned as safe for rendering by your server?) How can you\n * ensure that you didn't accidentally delete the line that sanitized the value, or renamed some\n * properties/fields and forgot to update the binding to the sanitized value?\n *\n * To be secure by default, AngularJS makes sure bindings go through that sanitization, or\n * any similar validation process, unless there's a good reason to trust the given value in this\n * context. That trust is formalized with a function call. This means that as a developer, you\n * can assume all untrusted bindings are safe. Then, to audit your code for binding security issues,\n * you just need to ensure the values you mark as trusted indeed are safe - because they were\n * received from your server, sanitized by your library, etc. You can organize your codebase to\n * help with this - perhaps allowing only the files in a specific directory to do this.\n * Ensuring that the internal API exposed by that code doesn't markup arbitrary values as safe then\n * becomes a more manageable task.\n *\n * In the case of AngularJS' SCE service, one uses {@link ng.$sce#trustAs $sce.trustAs}\n * (and shorthand methods such as {@link ng.$sce#trustAsHtml $sce.trustAsHtml}, etc.) to\n * build the trusted versions of your values.\n *\n * ### How does it work?\n *\n * In privileged contexts, directives and code will bind to the result of {@link ng.$sce#getTrusted\n * $sce.getTrusted(context, value)} rather than to the value directly. Think of this function as\n * a way to enforce the required security context in your data sink. Directives use {@link\n * ng.$sce#parseAs $sce.parseAs} rather than `$parse` to watch attribute bindings, which performs\n * the {@link ng.$sce#getTrusted $sce.getTrusted} behind the scenes on non-constant literals. Also,\n * when binding without directives, AngularJS will understand the context of your bindings\n * automatically.\n *\n * As an example, {@link ng.directive:ngBindHtml ngBindHtml} uses {@link\n * ng.$sce#parseAsHtml $sce.parseAsHtml(binding expression)}. Here's the actual code (slightly\n * simplified):\n *\n * ```\n * var ngBindHtmlDirective = ['$sce', function($sce) {\n * return function(scope, element, attr) {\n * scope.$watch($sce.parseAsHtml(attr.ngBindHtml), function(value) {\n * element.html(value || '');\n * });\n * };\n * }];\n * ```\n *\n * ### Impact on loading templates\n *\n * This applies both to the {@link ng.directive:ngInclude `ng-include`} directive as well as\n * `templateUrl`'s specified by {@link guide/directive directives}.\n *\n * By default, AngularJS only loads templates from the same domain and protocol as the application\n * document. This is done by calling {@link ng.$sce#getTrustedResourceUrl\n * $sce.getTrustedResourceUrl} on the template URL. To load templates from other domains and/or\n * protocols, you may either add them to the {@link ng.$sceDelegateProvider#trustedResourceUrlList\n * trustedResourceUrlList} or {@link ng.$sce#trustAsResourceUrl wrap them} into trusted values.\n *\n * *Please note*:\n * The browser's\n * [Same Origin Policy](https://code.google.com/p/browsersec/wiki/Part2#Same-origin_policy_for_XMLHttpRequest)\n * and [Cross-Origin Resource Sharing (CORS)](http://www.w3.org/TR/cors/)\n * policy apply in addition to this and may further restrict whether the template is successfully\n * loaded. This means that without the right CORS policy, loading templates from a different domain\n * won't work on all browsers. Also, loading templates from `file://` URL does not work on some\n * browsers.\n *\n * ### This feels like too much overhead\n *\n * It's important to remember that SCE only applies to interpolation expressions.\n *\n * If your expressions are constant literals, they're automatically trusted and you don't need to\n * call `$sce.trustAs` on them (e.g.\n * `implicitly trusted'\">
`) just works (remember to include the\n * `ngSanitize` module). The `$sceDelegate` will also use the `$sanitize` service if it is available\n * when binding untrusted values to `$sce.HTML` context.\n * AngularJS provides an implementation in `angular-sanitize.js`, and if you\n * wish to use it, you will also need to depend on the {@link ngSanitize `ngSanitize`} module in\n * your application.\n *\n * The included {@link ng.$sceDelegate $sceDelegate} comes with sane defaults to allow you to load\n * templates in `ng-include` from your application's domain without having to even know about SCE.\n * It blocks loading templates from other domains or loading templates over http from an https\n * served document. You can change these by setting your own custom {@link\n * ng.$sceDelegateProvider#trustedResourceUrlList trusted resource URL list} and {@link\n * ng.$sceDelegateProvider#bannedResourceUrlList banned resource URL list} for matching such URLs.\n *\n * This significantly reduces the overhead. It is far easier to pay the small overhead and have an\n * application that's secure and can be audited to verify that with much more ease than bolting\n * security onto an application later.\n *\n * \n * ### What trusted context types are supported?\n *\n * | Context | Notes |\n * |---------------------|----------------|\n * | `$sce.HTML` | For HTML that's safe to source into the application. The {@link ng.directive:ngBindHtml ngBindHtml} directive uses this context for bindings. If an unsafe value is encountered and the {@link ngSanitize $sanitize} module is present this will sanitize the value instead of throwing an error. |\n * | `$sce.CSS` | For CSS that's safe to source into the application. Currently unused. Feel free to use it in your own directives. |\n * | `$sce.MEDIA_URL` | For URLs that are safe to render as media. Is automatically converted from string by sanitizing when needed. |\n * | `$sce.URL` | For URLs that are safe to follow as links. Is automatically converted from string by sanitizing when needed. Note that `$sce.URL` makes a stronger statement about the URL than `$sce.MEDIA_URL` does and therefore contexts requiring values trusted for `$sce.URL` can be used anywhere that values trusted for `$sce.MEDIA_URL` are required.|\n * | `$sce.RESOURCE_URL` | For URLs that are not only safe to follow as links, but whose contents are also safe to include in your application. Examples include `ng-include`, `src` / `ngSrc` bindings for tags other than `IMG` (e.g. `IFRAME`, `OBJECT`, etc.)
Note that `$sce.RESOURCE_URL` makes a stronger statement about the URL than `$sce.URL` or `$sce.MEDIA_URL` do and therefore contexts requiring values trusted for `$sce.RESOURCE_URL` can be used anywhere that values trusted for `$sce.URL` or `$sce.MEDIA_URL` are required.
The {@link $sceDelegateProvider#trustedResourceUrlList $sceDelegateProvider#trustedResourceUrlList()} and {@link $sceDelegateProvider#bannedResourceUrlList $sceDelegateProvider#bannedResourceUrlList()} can be used to restrict trusted origins for `RESOURCE_URL` |\n * | `$sce.JS` | For JavaScript that is safe to execute in your application's context. Currently unused. Feel free to use it in your own directives. |\n *\n *\n * \n * Be aware that, before AngularJS 1.7.0, `a[href]` and `img[src]` used to sanitize their\n * interpolated values directly rather than rely upon {@link ng.$sce#getTrusted `$sce.getTrusted`}.\n *\n * **As of 1.7.0, this is no longer the case.**\n *\n * Now such interpolations are marked as requiring `$sce.URL` (for `a[href]`) or `$sce.MEDIA_URL`\n * (for `img[src]`), so that the sanitization happens (via `$sce.getTrusted...`) when the `$interpolate`\n * service evaluates the expressions.\n *
\n *\n * There are no CSS or JS context bindings in AngularJS currently, so their corresponding `$sce.trustAs`\n * functions aren't useful yet. This might evolve.\n *\n * ### Format of items in {@link ng.$sceDelegateProvider#trustedResourceUrlList trustedResourceUrlList}/{@link ng.$sceDelegateProvider#bannedResourceUrlList bannedResourceUrlList} \n *\n * Each element in these arrays must be one of the following:\n *\n * - **'self'**\n * - The special **string**, `'self'`, can be used to match against all URLs of the **same\n * domain** as the application document using the **same protocol**.\n * - **String** (except the special value `'self'`)\n * - The string is matched against the full *normalized / absolute URL* of the resource\n * being tested (substring matches are not good enough.)\n * - There are exactly **two wildcard sequences** - `*` and `**`. All other characters\n * match themselves.\n * - `*`: matches zero or more occurrences of any character other than one of the following 6\n * characters: '`:`', '`/`', '`.`', '`?`', '`&`' and '`;`'. It's a useful wildcard for use\n * for matching resource URL lists.\n * - `**`: matches zero or more occurrences of *any* character. As such, it's not\n * appropriate for use in a scheme, domain, etc. as it would match too much. (e.g.\n * http://**.example.com/ would match http://evil.com/?ignore=.example.com/ and that might\n * not have been the intention.) Its usage at the very end of the path is ok. (e.g.\n * http://foo.example.com/templates/**).\n * - **RegExp** (*see caveat below*)\n * - *Caveat*: While regular expressions are powerful and offer great flexibility, their syntax\n * (and all the inevitable escaping) makes them *harder to maintain*. It's easy to\n * accidentally introduce a bug when one updates a complex expression (imho, all regexes should\n * have good test coverage). For instance, the use of `.` in the regex is correct only in a\n * small number of cases. A `.` character in the regex used when matching the scheme or a\n * subdomain could be matched against a `:` or literal `.` that was likely not intended. It\n * is highly recommended to use the string patterns and only fall back to regular expressions\n * as a last resort.\n * - The regular expression must be an instance of RegExp (i.e. not a string.) It is\n * matched against the **entire** *normalized / absolute URL* of the resource being tested\n * (even when the RegExp did not have the `^` and `$` codes.) In addition, any flags\n * present on the RegExp (such as multiline, global, ignoreCase) are ignored.\n * - If you are generating your JavaScript from some other templating engine (not\n * recommended, e.g. in issue [#4006](https://github.com/angular/angular.js/issues/4006)),\n * remember to escape your regular expression (and be aware that you might need more than\n * one level of escaping depending on your templating engine and the way you interpolated\n * the value.) Do make use of your platform's escaping mechanism as it might be good\n * enough before coding your own. E.g. Ruby has\n * [Regexp.escape(str)](http://www.ruby-doc.org/core-2.0.0/Regexp.html#method-c-escape)\n * and Python has [re.escape](http://docs.python.org/library/re.html#re.escape).\n * Javascript lacks a similar built in function for escaping. Take a look at Google\n * Closure library's [goog.string.regExpEscape(s)](\n * http://docs.closure-library.googlecode.com/git/closure_goog_string_string.js.source.html#line962).\n *\n * Refer {@link ng.$sceDelegateProvider $sceDelegateProvider} for an example.\n *\n * ### Show me an example using SCE.\n *\n * \n * \n * \n *
\n *
User comments\n * By default, HTML that isn't explicitly trusted (e.g. Alice's comment) is sanitized when\n * $sanitize is available. If $sanitize isn't available, this results in an error instead of an\n * exploit.\n *
\n *
\n * {{userComment.name}}:\n * \n *
\n *
\n *
\n *
\n \n \n
\n \n \n it('should display the greeting in the input box', function() {\n element(by.model('greeting')).sendKeys('Hello, E2E Tests');\n // If we click the button it will block the test runner\n // element(':button').click();\n });\n \n \n */\nfunction $WindowProvider() {\n this.$get = valueFn(window);\n}\n\n/**\n * @name $$cookieReader\n * @requires $document\n *\n * @description\n * This is a private service for reading cookies used by $http and ngCookies\n *\n * @return {Object} a key/value map of the current cookies\n */\nfunction $$CookieReader($document) {\n var rawDocument = $document[0] || {};\n var lastCookies = {};\n var lastCookieString = '';\n\n function safeGetCookie(rawDocument) {\n try {\n return rawDocument.cookie || '';\n } catch (e) {\n return '';\n }\n }\n\n function safeDecodeURIComponent(str) {\n try {\n return decodeURIComponent(str);\n } catch (e) {\n return str;\n }\n }\n\n return function() {\n var cookieArray, cookie, i, index, name;\n var currentCookieString = safeGetCookie(rawDocument);\n\n if (currentCookieString !== lastCookieString) {\n lastCookieString = currentCookieString;\n cookieArray = lastCookieString.split('; ');\n lastCookies = {};\n\n for (i = 0; i < cookieArray.length; i++) {\n cookie = cookieArray[i];\n index = cookie.indexOf('=');\n if (index > 0) { //ignore nameless cookies\n name = safeDecodeURIComponent(cookie.substring(0, index));\n // the first value that is seen for a cookie is the most\n // specific one. values for the same cookie name that\n // follow are for less specific paths.\n if (isUndefined(lastCookies[name])) {\n lastCookies[name] = safeDecodeURIComponent(cookie.substring(index + 1));\n }\n }\n }\n }\n return lastCookies;\n };\n}\n\n$$CookieReader.$inject = ['$document'];\n\n/** @this */\nfunction $$CookieReaderProvider() {\n this.$get = $$CookieReader;\n}\n\n/* global currencyFilter: true,\n dateFilter: true,\n filterFilter: true,\n jsonFilter: true,\n limitToFilter: true,\n lowercaseFilter: true,\n numberFilter: true,\n orderByFilter: true,\n uppercaseFilter: true,\n */\n\n/**\n * @ngdoc provider\n * @name $filterProvider\n * @description\n *\n * Filters are just functions which transform input to an output. However filters need to be\n * Dependency Injected. To achieve this a filter definition consists of a factory function which is\n * annotated with dependencies and is responsible for creating a filter function.\n *\n * \n * **Note:** Filter names must be valid AngularJS {@link expression} identifiers, such as `uppercase` or `orderBy`.\n * Names with special characters, such as hyphens and dots, are not allowed. If you wish to namespace\n * your filters, then you can use capitalization (`myappSubsectionFilterx`) or underscores\n * (`myapp_subsection_filterx`).\n *
\n *\n * ```js\n * // Filter registration\n * function MyModule($provide, $filterProvider) {\n * // create a service to demonstrate injection (not always needed)\n * $provide.value('greet', function(name){\n * return 'Hello ' + name + '!';\n * });\n *\n * // register a filter factory which uses the\n * // greet service to demonstrate DI.\n * $filterProvider.register('greet', function(greet){\n * // return the filter function which uses the greet service\n * // to generate salutation\n * return function(text) {\n * // filters need to be forgiving so check input validity\n * return text && greet(text) || text;\n * };\n * });\n * }\n * ```\n *\n * The filter function is registered with the `$injector` under the filter name suffix with\n * `Filter`.\n *\n * ```js\n * it('should be the same instance', inject(\n * function($filterProvider) {\n * $filterProvider.register('reverse', function(){\n * return ...;\n * });\n * },\n * function($filter, reverseFilter) {\n * expect($filter('reverse')).toBe(reverseFilter);\n * });\n * ```\n *\n *\n * For more information about how AngularJS filters work, and how to create your own filters, see\n * {@link guide/filter Filters} in the AngularJS Developer Guide.\n */\n\n/**\n * @ngdoc service\n * @name $filter\n * @kind function\n * @description\n * Filters are used for formatting data displayed to the user.\n *\n * They can be used in view templates, controllers or services. AngularJS comes\n * with a collection of [built-in filters](api/ng/filter), but it is easy to\n * define your own as well.\n *\n * The general syntax in templates is as follows:\n *\n * ```html\n * {{ expression [| filter_name[:parameter_value] ... ] }}\n * ```\n *\n * @param {String} name Name of the filter function to retrieve\n * @return {Function} the filter function\n * @example\n \n \n \n
{{ originalText }}
\n {{ filteredText }}
\n \n \n\n \n angular.module('filterExample', [])\n .controller('MainCtrl', function($scope, $filter) {\n $scope.originalText = 'hello';\n $scope.filteredText = $filter('uppercase')($scope.originalText);\n });\n \n \n */\n$FilterProvider.$inject = ['$provide'];\n/** @this */\nfunction $FilterProvider($provide) {\n var suffix = 'Filter';\n\n /**\n * @ngdoc method\n * @name $filterProvider#register\n * @param {string|Object} name Name of the filter function, or an object map of filters where\n * the keys are the filter names and the values are the filter factories.\n *\n * \n * **Note:** Filter names must be valid AngularJS {@link expression} identifiers, such as `uppercase` or `orderBy`.\n * Names with special characters, such as hyphens and dots, are not allowed. If you wish to namespace\n * your filters, then you can use capitalization (`myappSubsectionFilterx`) or underscores\n * (`myapp_subsection_filterx`).\n *
\n * @param {Function} factory If the first argument was a string, a factory function for the filter to be registered.\n * @returns {Object} Registered filter instance, or if a map of filters was provided then a map\n * of the registered filter instances.\n */\n function register(name, factory) {\n if (isObject(name)) {\n var filters = {};\n forEach(name, function(filter, key) {\n filters[key] = register(key, filter);\n });\n return filters;\n } else {\n return $provide.factory(name + suffix, factory);\n }\n }\n this.register = register;\n\n this.$get = ['$injector', function($injector) {\n return function(name) {\n return $injector.get(name + suffix);\n };\n }];\n\n ////////////////////////////////////////\n\n /* global\n currencyFilter: false,\n dateFilter: false,\n filterFilter: false,\n jsonFilter: false,\n limitToFilter: false,\n lowercaseFilter: false,\n numberFilter: false,\n orderByFilter: false,\n uppercaseFilter: false\n */\n\n register('currency', currencyFilter);\n register('date', dateFilter);\n register('filter', filterFilter);\n register('json', jsonFilter);\n register('limitTo', limitToFilter);\n register('lowercase', lowercaseFilter);\n register('number', numberFilter);\n register('orderBy', orderByFilter);\n register('uppercase', uppercaseFilter);\n}\n\n/**\n * @ngdoc filter\n * @name filter\n * @kind function\n *\n * @description\n * Selects a subset of items from `array` and returns it as a new array.\n *\n * @param {Array} array The source array.\n * \n * **Note**: If the array contains objects that reference themselves, filtering is not possible.\n *
\n * @param {string|Object|function()} expression The predicate to be used for selecting items from\n * `array`.\n *\n * Can be one of:\n *\n * - `string`: The string is used for matching against the contents of the `array`. All strings or\n * objects with string properties in `array` that match this string will be returned. This also\n * applies to nested object properties.\n * The predicate can be negated by prefixing the string with `!`.\n *\n * - `Object`: A pattern object can be used to filter specific properties on objects contained\n * by `array`. For example `{name:\"M\", phone:\"1\"}` predicate will return an array of items\n * which have property `name` containing \"M\" and property `phone` containing \"1\". A special\n * property name (`$` by default) can be used (e.g. as in `{$: \"text\"}`) to accept a match\n * against any property of the object or its nested object properties. That's equivalent to the\n * simple substring match with a `string` as described above. The special property name can be\n * overwritten, using the `anyPropertyKey` parameter.\n * The predicate can be negated by prefixing the string with `!`.\n * For example `{name: \"!M\"}` predicate will return an array of items which have property `name`\n * not containing \"M\".\n *\n * Note that a named property will match properties on the same level only, while the special\n * `$` property will match properties on the same level or deeper. E.g. an array item like\n * `{name: {first: 'John', last: 'Doe'}}` will **not** be matched by `{name: 'John'}`, but\n * **will** be matched by `{$: 'John'}`.\n *\n * - `function(value, index, array)`: A predicate function can be used to write arbitrary filters.\n * The function is called for each element of the array, with the element, its index, and\n * the entire array itself as arguments.\n *\n * The final result is an array of those elements that the predicate returned true for.\n *\n * @param {function(actual, expected)|true|false} [comparator] Comparator which is used in\n * determining if values retrieved using `expression` (when it is not a function) should be\n * considered a match based on the expected value (from the filter expression) and actual\n * value (from the object in the array).\n *\n * Can be one of:\n *\n * - `function(actual, expected)`:\n * The function will be given the object value and the predicate value to compare and\n * should return true if both values should be considered equal.\n *\n * - `true`: A shorthand for `function(actual, expected) { return angular.equals(actual, expected)}`.\n * This is essentially strict comparison of expected and actual.\n *\n * - `false`: A short hand for a function which will look for a substring match in a case\n * insensitive way. Primitive values are converted to strings. Objects are not compared against\n * primitives, unless they have a custom `toString` method (e.g. `Date` objects).\n *\n *\n * Defaults to `false`.\n *\n * @param {string} [anyPropertyKey] The special property name that matches against any property.\n * By default `$`.\n *\n * @example\n \n \n \n\n \n \n | Name | Phone |
|---|
\n \n | {{friend.name}} | \n {{friend.phone}} | \n
\n
\n
\n
\n
\n
\n
\n \n | Name | Phone |
|---|
\n \n | {{friendObj.name}} | \n {{friendObj.phone}} | \n
\n
\n \n \n var expectFriendNames = function(expectedNames, key) {\n element.all(by.repeater(key + ' in friends').column(key + '.name')).then(function(arr) {\n arr.forEach(function(wd, i) {\n expect(wd.getText()).toMatch(expectedNames[i]);\n });\n });\n };\n\n it('should search across all fields when filtering with a string', function() {\n var searchText = element(by.model('searchText'));\n searchText.clear();\n searchText.sendKeys('m');\n expectFriendNames(['Mary', 'Mike', 'Adam'], 'friend');\n\n searchText.clear();\n searchText.sendKeys('76');\n expectFriendNames(['John', 'Julie'], 'friend');\n });\n\n it('should search in specific fields when filtering with a predicate object', function() {\n var searchAny = element(by.model('search.$'));\n searchAny.clear();\n searchAny.sendKeys('i');\n expectFriendNames(['Mary', 'Mike', 'Julie', 'Juliette'], 'friendObj');\n });\n it('should use a equal comparison when comparator is true', function() {\n var searchName = element(by.model('search.name'));\n var strict = element(by.model('strict'));\n searchName.clear();\n searchName.sendKeys('Julie');\n strict.click();\n expectFriendNames(['Julie'], 'friendObj');\n });\n \n \n */\n\nfunction filterFilter() {\n return function(array, expression, comparator, anyPropertyKey) {\n if (!isArrayLike(array)) {\n if (array == null) {\n return array;\n } else {\n throw minErr('filter')('notarray', 'Expected array but received: {0}', array);\n }\n }\n\n anyPropertyKey = anyPropertyKey || '$';\n var expressionType = getTypeForFilter(expression);\n var predicateFn;\n var matchAgainstAnyProp;\n\n switch (expressionType) {\n case 'function':\n predicateFn = expression;\n break;\n case 'boolean':\n case 'null':\n case 'number':\n case 'string':\n matchAgainstAnyProp = true;\n // falls through\n case 'object':\n predicateFn = createPredicateFn(expression, comparator, anyPropertyKey, matchAgainstAnyProp);\n break;\n default:\n return array;\n }\n\n return Array.prototype.filter.call(array, predicateFn);\n };\n}\n\n// Helper functions for `filterFilter`\nfunction createPredicateFn(expression, comparator, anyPropertyKey, matchAgainstAnyProp) {\n var shouldMatchPrimitives = isObject(expression) && (anyPropertyKey in expression);\n var predicateFn;\n\n if (comparator === true) {\n comparator = equals;\n } else if (!isFunction(comparator)) {\n comparator = function(actual, expected) {\n if (isUndefined(actual)) {\n // No substring matching against `undefined`\n return false;\n }\n if ((actual === null) || (expected === null)) {\n // No substring matching against `null`; only match against `null`\n return actual === expected;\n }\n if (isObject(expected) || (isObject(actual) && !hasCustomToString(actual))) {\n // Should not compare primitives against objects, unless they have custom `toString` method\n return false;\n }\n\n actual = lowercase('' + actual);\n expected = lowercase('' + expected);\n return actual.indexOf(expected) !== -1;\n };\n }\n\n predicateFn = function(item) {\n if (shouldMatchPrimitives && !isObject(item)) {\n return deepCompare(item, expression[anyPropertyKey], comparator, anyPropertyKey, false);\n }\n return deepCompare(item, expression, comparator, anyPropertyKey, matchAgainstAnyProp);\n };\n\n return predicateFn;\n}\n\nfunction deepCompare(actual, expected, comparator, anyPropertyKey, matchAgainstAnyProp, dontMatchWholeObject) {\n var actualType = getTypeForFilter(actual);\n var expectedType = getTypeForFilter(expected);\n\n if ((expectedType === 'string') && (expected.charAt(0) === '!')) {\n return !deepCompare(actual, expected.substring(1), comparator, anyPropertyKey, matchAgainstAnyProp);\n } else if (isArray(actual)) {\n // In case `actual` is an array, consider it a match\n // if ANY of it's items matches `expected`\n return actual.some(function(item) {\n return deepCompare(item, expected, comparator, anyPropertyKey, matchAgainstAnyProp);\n });\n }\n\n switch (actualType) {\n case 'object':\n var key;\n if (matchAgainstAnyProp) {\n for (key in actual) {\n // Under certain, rare, circumstances, key may not be a string and `charAt` will be undefined\n // See: https://github.com/angular/angular.js/issues/15644\n if (key.charAt && (key.charAt(0) !== '$') &&\n deepCompare(actual[key], expected, comparator, anyPropertyKey, true)) {\n return true;\n }\n }\n return dontMatchWholeObject ? false : deepCompare(actual, expected, comparator, anyPropertyKey, false);\n } else if (expectedType === 'object') {\n for (key in expected) {\n var expectedVal = expected[key];\n if (isFunction(expectedVal) || isUndefined(expectedVal)) {\n continue;\n }\n\n var matchAnyProperty = key === anyPropertyKey;\n var actualVal = matchAnyProperty ? actual : actual[key];\n if (!deepCompare(actualVal, expectedVal, comparator, anyPropertyKey, matchAnyProperty, matchAnyProperty)) {\n return false;\n }\n }\n return true;\n } else {\n return comparator(actual, expected);\n }\n case 'function':\n return false;\n default:\n return comparator(actual, expected);\n }\n}\n\n// Used for easily differentiating between `null` and actual `object`\nfunction getTypeForFilter(val) {\n return (val === null) ? 'null' : typeof val;\n}\n\nvar MAX_DIGITS = 22;\nvar DECIMAL_SEP = '.';\nvar ZERO_CHAR = '0';\n\n/**\n * @ngdoc filter\n * @name currency\n * @kind function\n *\n * @description\n * Formats a number as a currency (ie $1,234.56). When no currency symbol is provided, default\n * symbol for current locale is used.\n *\n * @param {number} amount Input to filter.\n * @param {string=} symbol Currency symbol or identifier to be displayed.\n * @param {number=} fractionSize Number of decimal places to round the amount to, defaults to default max fraction size for current locale\n * @returns {string} Formatted number.\n *\n *\n * @example\n \n \n \n \n
\n default currency symbol ($): {{amount | currency}}
\n custom currency identifier (USD$): {{amount | currency:\"USD$\"}}
\n no fractions (0): {{amount | currency:\"USD$\":0}}\n
\n \n \n it('should init with 1234.56', function() {\n expect(element(by.id('currency-default')).getText()).toBe('$1,234.56');\n expect(element(by.id('currency-custom')).getText()).toBe('USD$1,234.56');\n expect(element(by.id('currency-no-fractions')).getText()).toBe('USD$1,235');\n });\n it('should update', function() {\n if (browser.params.browser === 'safari') {\n // Safari does not understand the minus key. See\n // https://github.com/angular/protractor/issues/481\n return;\n }\n element(by.model('amount')).clear();\n element(by.model('amount')).sendKeys('-1234');\n expect(element(by.id('currency-default')).getText()).toBe('-$1,234.00');\n expect(element(by.id('currency-custom')).getText()).toBe('-USD$1,234.00');\n expect(element(by.id('currency-no-fractions')).getText()).toBe('-USD$1,234');\n });\n \n \n */\ncurrencyFilter.$inject = ['$locale'];\nfunction currencyFilter($locale) {\n var formats = $locale.NUMBER_FORMATS;\n return function(amount, currencySymbol, fractionSize) {\n if (isUndefined(currencySymbol)) {\n currencySymbol = formats.CURRENCY_SYM;\n }\n\n if (isUndefined(fractionSize)) {\n fractionSize = formats.PATTERNS[1].maxFrac;\n }\n\n // If the currency symbol is empty, trim whitespace around the symbol\n var currencySymbolRe = !currencySymbol ? /\\s*\\u00A4\\s*/g : /\\u00A4/g;\n\n // if null or undefined pass it through\n return (amount == null)\n ? amount\n : formatNumber(amount, formats.PATTERNS[1], formats.GROUP_SEP, formats.DECIMAL_SEP, fractionSize).\n replace(currencySymbolRe, currencySymbol);\n };\n}\n\n/**\n * @ngdoc filter\n * @name number\n * @kind function\n *\n * @description\n * Formats a number as text.\n *\n * If the input is null or undefined, it will just be returned.\n * If the input is infinite (Infinity or -Infinity), the Infinity symbol '∞' or '-∞' is returned, respectively.\n * If the input is not a number an empty string is returned.\n *\n *\n * @param {number|string} number Number to format.\n * @param {(number|string)=} fractionSize Number of decimal places to round the number to.\n * If this is not provided then the fraction size is computed from the current locale's number\n * formatting pattern. In the case of the default locale, it will be 3.\n * @returns {string} Number rounded to `fractionSize` appropriately formatted based on the current\n * locale (e.g., in the en_US locale it will have \".\" as the decimal separator and\n * include \",\" group separators after each third digit).\n *\n * @example\n \n \n \n \n
\n Default formatting: {{val | number}}
\n No fractions: {{val | number:0}}
\n Negative number: {{-val | number:4}}\n
\n \n \n it('should format numbers', function() {\n expect(element(by.id('number-default')).getText()).toBe('1,234.568');\n expect(element(by.binding('val | number:0')).getText()).toBe('1,235');\n expect(element(by.binding('-val | number:4')).getText()).toBe('-1,234.5679');\n });\n\n it('should update', function() {\n element(by.model('val')).clear();\n element(by.model('val')).sendKeys('3374.333');\n expect(element(by.id('number-default')).getText()).toBe('3,374.333');\n expect(element(by.binding('val | number:0')).getText()).toBe('3,374');\n expect(element(by.binding('-val | number:4')).getText()).toBe('-3,374.3330');\n });\n \n \n */\nnumberFilter.$inject = ['$locale'];\nfunction numberFilter($locale) {\n var formats = $locale.NUMBER_FORMATS;\n return function(number, fractionSize) {\n\n // if null or undefined pass it through\n return (number == null)\n ? number\n : formatNumber(number, formats.PATTERNS[0], formats.GROUP_SEP, formats.DECIMAL_SEP,\n fractionSize);\n };\n}\n\n/**\n * Parse a number (as a string) into three components that can be used\n * for formatting the number.\n *\n * (Significant bits of this parse algorithm came from https://github.com/MikeMcl/big.js/)\n *\n * @param {string} numStr The number to parse\n * @return {object} An object describing this number, containing the following keys:\n * - d : an array of digits containing leading zeros as necessary\n * - i : the number of the digits in `d` that are to the left of the decimal point\n * - e : the exponent for numbers that would need more than `MAX_DIGITS` digits in `d`\n *\n */\nfunction parse(numStr) {\n var exponent = 0, digits, numberOfIntegerDigits;\n var i, j, zeros;\n\n // Decimal point?\n if ((numberOfIntegerDigits = numStr.indexOf(DECIMAL_SEP)) > -1) {\n numStr = numStr.replace(DECIMAL_SEP, '');\n }\n\n // Exponential form?\n if ((i = numStr.search(/e/i)) > 0) {\n // Work out the exponent.\n if (numberOfIntegerDigits < 0) numberOfIntegerDigits = i;\n numberOfIntegerDigits += +numStr.slice(i + 1);\n numStr = numStr.substring(0, i);\n } else if (numberOfIntegerDigits < 0) {\n // There was no decimal point or exponent so it is an integer.\n numberOfIntegerDigits = numStr.length;\n }\n\n // Count the number of leading zeros.\n for (i = 0; numStr.charAt(i) === ZERO_CHAR; i++) { /* empty */ }\n\n if (i === (zeros = numStr.length)) {\n // The digits are all zero.\n digits = [0];\n numberOfIntegerDigits = 1;\n } else {\n // Count the number of trailing zeros\n zeros--;\n while (numStr.charAt(zeros) === ZERO_CHAR) zeros--;\n\n // Trailing zeros are insignificant so ignore them\n numberOfIntegerDigits -= i;\n digits = [];\n // Convert string to array of digits without leading/trailing zeros.\n for (j = 0; i <= zeros; i++, j++) {\n digits[j] = +numStr.charAt(i);\n }\n }\n\n // If the number overflows the maximum allowed digits then use an exponent.\n if (numberOfIntegerDigits > MAX_DIGITS) {\n digits = digits.splice(0, MAX_DIGITS - 1);\n exponent = numberOfIntegerDigits - 1;\n numberOfIntegerDigits = 1;\n }\n\n return { d: digits, e: exponent, i: numberOfIntegerDigits };\n}\n\n/**\n * Round the parsed number to the specified number of decimal places\n * This function changed the parsedNumber in-place\n */\nfunction roundNumber(parsedNumber, fractionSize, minFrac, maxFrac) {\n var digits = parsedNumber.d;\n var fractionLen = digits.length - parsedNumber.i;\n\n // determine fractionSize if it is not specified; `+fractionSize` converts it to a number\n fractionSize = (isUndefined(fractionSize)) ? Math.min(Math.max(minFrac, fractionLen), maxFrac) : +fractionSize;\n\n // The index of the digit to where rounding is to occur\n var roundAt = fractionSize + parsedNumber.i;\n var digit = digits[roundAt];\n\n if (roundAt > 0) {\n // Drop fractional digits beyond `roundAt`\n digits.splice(Math.max(parsedNumber.i, roundAt));\n\n // Set non-fractional digits beyond `roundAt` to 0\n for (var j = roundAt; j < digits.length; j++) {\n digits[j] = 0;\n }\n } else {\n // We rounded to zero so reset the parsedNumber\n fractionLen = Math.max(0, fractionLen);\n parsedNumber.i = 1;\n digits.length = Math.max(1, roundAt = fractionSize + 1);\n digits[0] = 0;\n for (var i = 1; i < roundAt; i++) digits[i] = 0;\n }\n\n if (digit >= 5) {\n if (roundAt - 1 < 0) {\n for (var k = 0; k > roundAt; k--) {\n digits.unshift(0);\n parsedNumber.i++;\n }\n digits.unshift(1);\n parsedNumber.i++;\n } else {\n digits[roundAt - 1]++;\n }\n }\n\n // Pad out with zeros to get the required fraction length\n for (; fractionLen < Math.max(0, fractionSize); fractionLen++) digits.push(0);\n\n\n // Do any carrying, e.g. a digit was rounded up to 10\n var carry = digits.reduceRight(function(carry, d, i, digits) {\n d = d + carry;\n digits[i] = d % 10;\n return Math.floor(d / 10);\n }, 0);\n if (carry) {\n digits.unshift(carry);\n parsedNumber.i++;\n }\n}\n\n/**\n * Format a number into a string\n * @param {number} number The number to format\n * @param {{\n * minFrac, // the minimum number of digits required in the fraction part of the number\n * maxFrac, // the maximum number of digits required in the fraction part of the number\n * gSize, // number of digits in each group of separated digits\n * lgSize, // number of digits in the last group of digits before the decimal separator\n * negPre, // the string to go in front of a negative number (e.g. `-` or `(`))\n * posPre, // the string to go in front of a positive number\n * negSuf, // the string to go after a negative number (e.g. `)`)\n * posSuf // the string to go after a positive number\n * }} pattern\n * @param {string} groupSep The string to separate groups of number (e.g. `,`)\n * @param {string} decimalSep The string to act as the decimal separator (e.g. `.`)\n * @param {[type]} fractionSize The size of the fractional part of the number\n * @return {string} The number formatted as a string\n */\nfunction formatNumber(number, pattern, groupSep, decimalSep, fractionSize) {\n\n if (!(isString(number) || isNumber(number)) || isNaN(number)) return '';\n\n var isInfinity = !isFinite(number);\n var isZero = false;\n var numStr = Math.abs(number) + '',\n formattedText = '',\n parsedNumber;\n\n if (isInfinity) {\n formattedText = '\\u221e';\n } else {\n parsedNumber = parse(numStr);\n\n roundNumber(parsedNumber, fractionSize, pattern.minFrac, pattern.maxFrac);\n\n var digits = parsedNumber.d;\n var integerLen = parsedNumber.i;\n var exponent = parsedNumber.e;\n var decimals = [];\n isZero = digits.reduce(function(isZero, d) { return isZero && !d; }, true);\n\n // pad zeros for small numbers\n while (integerLen < 0) {\n digits.unshift(0);\n integerLen++;\n }\n\n // extract decimals digits\n if (integerLen > 0) {\n decimals = digits.splice(integerLen, digits.length);\n } else {\n decimals = digits;\n digits = [0];\n }\n\n // format the integer digits with grouping separators\n var groups = [];\n if (digits.length >= pattern.lgSize) {\n groups.unshift(digits.splice(-pattern.lgSize, digits.length).join(''));\n }\n while (digits.length > pattern.gSize) {\n groups.unshift(digits.splice(-pattern.gSize, digits.length).join(''));\n }\n if (digits.length) {\n groups.unshift(digits.join(''));\n }\n formattedText = groups.join(groupSep);\n\n // append the decimal digits\n if (decimals.length) {\n formattedText += decimalSep + decimals.join('');\n }\n\n if (exponent) {\n formattedText += 'e+' + exponent;\n }\n }\n if (number < 0 && !isZero) {\n return pattern.negPre + formattedText + pattern.negSuf;\n } else {\n return pattern.posPre + formattedText + pattern.posSuf;\n }\n}\n\nfunction padNumber(num, digits, trim, negWrap) {\n var neg = '';\n if (num < 0 || (negWrap && num <= 0)) {\n if (negWrap) {\n num = -num + 1;\n } else {\n num = -num;\n neg = '-';\n }\n }\n num = '' + num;\n while (num.length < digits) num = ZERO_CHAR + num;\n if (trim) {\n num = num.substr(num.length - digits);\n }\n return neg + num;\n}\n\n\nfunction dateGetter(name, size, offset, trim, negWrap) {\n offset = offset || 0;\n return function(date) {\n var value = date['get' + name]();\n if (offset > 0 || value > -offset) {\n value += offset;\n }\n if (value === 0 && offset === -12) value = 12;\n return padNumber(value, size, trim, negWrap);\n };\n}\n\nfunction dateStrGetter(name, shortForm, standAlone) {\n return function(date, formats) {\n var value = date['get' + name]();\n var propPrefix = (standAlone ? 'STANDALONE' : '') + (shortForm ? 'SHORT' : '');\n var get = uppercase(propPrefix + name);\n\n return formats[get][value];\n };\n}\n\nfunction timeZoneGetter(date, formats, offset) {\n var zone = -1 * offset;\n var paddedZone = (zone >= 0) ? '+' : '';\n\n paddedZone += padNumber(Math[zone > 0 ? 'floor' : 'ceil'](zone / 60), 2) +\n padNumber(Math.abs(zone % 60), 2);\n\n return paddedZone;\n}\n\nfunction getFirstThursdayOfYear(year) {\n // 0 = index of January\n var dayOfWeekOnFirst = (new Date(year, 0, 1)).getDay();\n // 4 = index of Thursday (+1 to account for 1st = 5)\n // 11 = index of *next* Thursday (+1 account for 1st = 12)\n return new Date(year, 0, ((dayOfWeekOnFirst <= 4) ? 5 : 12) - dayOfWeekOnFirst);\n}\n\nfunction getThursdayThisWeek(datetime) {\n return new Date(datetime.getFullYear(), datetime.getMonth(),\n // 4 = index of Thursday\n datetime.getDate() + (4 - datetime.getDay()));\n}\n\nfunction weekGetter(size) {\n return function(date) {\n var firstThurs = getFirstThursdayOfYear(date.getFullYear()),\n thisThurs = getThursdayThisWeek(date);\n\n var diff = +thisThurs - +firstThurs,\n result = 1 + Math.round(diff / 6.048e8); // 6.048e8 ms per week\n\n return padNumber(result, size);\n };\n}\n\nfunction ampmGetter(date, formats) {\n return date.getHours() < 12 ? formats.AMPMS[0] : formats.AMPMS[1];\n}\n\nfunction eraGetter(date, formats) {\n return date.getFullYear() <= 0 ? formats.ERAS[0] : formats.ERAS[1];\n}\n\nfunction longEraGetter(date, formats) {\n return date.getFullYear() <= 0 ? formats.ERANAMES[0] : formats.ERANAMES[1];\n}\n\nvar DATE_FORMATS = {\n yyyy: dateGetter('FullYear', 4, 0, false, true),\n yy: dateGetter('FullYear', 2, 0, true, true),\n y: dateGetter('FullYear', 1, 0, false, true),\n MMMM: dateStrGetter('Month'),\n MMM: dateStrGetter('Month', true),\n MM: dateGetter('Month', 2, 1),\n M: dateGetter('Month', 1, 1),\n LLLL: dateStrGetter('Month', false, true),\n dd: dateGetter('Date', 2),\n d: dateGetter('Date', 1),\n HH: dateGetter('Hours', 2),\n H: dateGetter('Hours', 1),\n hh: dateGetter('Hours', 2, -12),\n h: dateGetter('Hours', 1, -12),\n mm: dateGetter('Minutes', 2),\n m: dateGetter('Minutes', 1),\n ss: dateGetter('Seconds', 2),\n s: dateGetter('Seconds', 1),\n // while ISO 8601 requires fractions to be prefixed with `.` or `,`\n // we can be just safely rely on using `sss` since we currently don't support single or two digit fractions\n sss: dateGetter('Milliseconds', 3),\n EEEE: dateStrGetter('Day'),\n EEE: dateStrGetter('Day', true),\n a: ampmGetter,\n Z: timeZoneGetter,\n ww: weekGetter(2),\n w: weekGetter(1),\n G: eraGetter,\n GG: eraGetter,\n GGG: eraGetter,\n GGGG: longEraGetter\n};\n\nvar DATE_FORMATS_SPLIT = /((?:[^yMLdHhmsaZEwG']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|L+|d+|H+|h+|m+|s+|a|Z|G+|w+))([\\s\\S]*)/,\n NUMBER_STRING = /^-?\\d+$/;\n\n/**\n * @ngdoc filter\n * @name date\n * @kind function\n *\n * @description\n * Formats `date` to a string based on the requested `format`.\n *\n * `format` string can be composed of the following elements:\n *\n * * `'yyyy'`: 4 digit representation of year (e.g. AD 1 => 0001, AD 2010 => 2010)\n * * `'yy'`: 2 digit representation of year, padded (00-99). (e.g. AD 2001 => 01, AD 2010 => 10)\n * * `'y'`: 1 digit representation of year, e.g. (AD 1 => 1, AD 199 => 199)\n * * `'MMMM'`: Month in year (January-December)\n * * `'MMM'`: Month in year (Jan-Dec)\n * * `'MM'`: Month in year, padded (01-12)\n * * `'M'`: Month in year (1-12)\n * * `'LLLL'`: Stand-alone month in year (January-December)\n * * `'dd'`: Day in month, padded (01-31)\n * * `'d'`: Day in month (1-31)\n * * `'EEEE'`: Day in Week,(Sunday-Saturday)\n * * `'EEE'`: Day in Week, (Sun-Sat)\n * * `'HH'`: Hour in day, padded (00-23)\n * * `'H'`: Hour in day (0-23)\n * * `'hh'`: Hour in AM/PM, padded (01-12)\n * * `'h'`: Hour in AM/PM, (1-12)\n * * `'mm'`: Minute in hour, padded (00-59)\n * * `'m'`: Minute in hour (0-59)\n * * `'ss'`: Second in minute, padded (00-59)\n * * `'s'`: Second in minute (0-59)\n * * `'sss'`: Millisecond in second, padded (000-999)\n * * `'a'`: AM/PM marker\n * * `'Z'`: 4 digit (+sign) representation of the timezone offset (-1200-+1200)\n * * `'ww'`: Week of year, padded (00-53). Week 01 is the week with the first Thursday of the year\n * * `'w'`: Week of year (0-53). Week 1 is the week with the first Thursday of the year\n * * `'G'`, `'GG'`, `'GGG'`: The abbreviated form of the era string (e.g. 'AD')\n * * `'GGGG'`: The long form of the era string (e.g. 'Anno Domini')\n *\n * `format` string can also be one of the following predefined\n * {@link guide/i18n localizable formats}:\n *\n * * `'medium'`: equivalent to `'MMM d, y h:mm:ss a'` for en_US locale\n * (e.g. Sep 3, 2010 12:05:08 PM)\n * * `'short'`: equivalent to `'M/d/yy h:mm a'` for en_US locale (e.g. 9/3/10 12:05 PM)\n * * `'fullDate'`: equivalent to `'EEEE, MMMM d, y'` for en_US locale\n * (e.g. Friday, September 3, 2010)\n * * `'longDate'`: equivalent to `'MMMM d, y'` for en_US locale (e.g. September 3, 2010)\n * * `'mediumDate'`: equivalent to `'MMM d, y'` for en_US locale (e.g. Sep 3, 2010)\n * * `'shortDate'`: equivalent to `'M/d/yy'` for en_US locale (e.g. 9/3/10)\n * * `'mediumTime'`: equivalent to `'h:mm:ss a'` for en_US locale (e.g. 12:05:08 PM)\n * * `'shortTime'`: equivalent to `'h:mm a'` for en_US locale (e.g. 12:05 PM)\n *\n * `format` string can contain literal values. These need to be escaped by surrounding with single quotes (e.g.\n * `\"h 'in the morning'\"`). In order to output a single quote, escape it - i.e., two single quotes in a sequence\n * (e.g. `\"h 'o''clock'\"`).\n *\n * Any other characters in the `format` string will be output as-is.\n *\n * @param {(Date|number|string)} date Date to format either as Date object, milliseconds (string or\n * number) or various ISO 8601 datetime string formats (e.g. yyyy-MM-ddTHH:mm:ss.sssZ and its\n * shorter versions like yyyy-MM-ddTHH:mmZ, yyyy-MM-dd or yyyyMMddTHHmmssZ). If no timezone is\n * specified in the string input, the time is considered to be in the local timezone.\n * @param {string=} format Formatting rules (see Description). If not specified,\n * `mediumDate` is used.\n * @param {string=} timezone Timezone to be used for formatting. It understands UTC/GMT and the\n * continental US time zone abbreviations, but for general use, use a time zone offset, for\n * example, `'+0430'` (4 hours, 30 minutes east of the Greenwich meridian)\n * If not specified, the timezone of the browser will be used.\n * @returns {string} Formatted string or the input if input is not recognized as date/millis.\n *\n * @example\n \n \n {{1288323623006 | date:'medium'}}:\n {{1288323623006 | date:'medium'}}
\n {{1288323623006 | date:'yyyy-MM-dd HH:mm:ss Z'}}:\n {{1288323623006 | date:'yyyy-MM-dd HH:mm:ss Z'}}
\n {{1288323623006 | date:'MM/dd/yyyy @ h:mma'}}:\n {{'1288323623006' | date:'MM/dd/yyyy @ h:mma'}}
\n {{1288323623006 | date:\"MM/dd/yyyy 'at' h:mma\"}}:\n {{'1288323623006' | date:\"MM/dd/yyyy 'at' h:mma\"}}
\n \n \n it('should format date', function() {\n expect(element(by.binding(\"1288323623006 | date:'medium'\")).getText()).\n toMatch(/Oct 2\\d, 2010 \\d{1,2}:\\d{2}:\\d{2} (AM|PM)/);\n expect(element(by.binding(\"1288323623006 | date:'yyyy-MM-dd HH:mm:ss Z'\")).getText()).\n toMatch(/2010-10-2\\d \\d{2}:\\d{2}:\\d{2} (-|\\+)?\\d{4}/);\n expect(element(by.binding(\"'1288323623006' | date:'MM/dd/yyyy @ h:mma'\")).getText()).\n toMatch(/10\\/2\\d\\/2010 @ \\d{1,2}:\\d{2}(AM|PM)/);\n expect(element(by.binding(\"'1288323623006' | date:\\\"MM/dd/yyyy 'at' h:mma\\\"\")).getText()).\n toMatch(/10\\/2\\d\\/2010 at \\d{1,2}:\\d{2}(AM|PM)/);\n });\n \n \n */\ndateFilter.$inject = ['$locale'];\nfunction dateFilter($locale) {\n\n\n var R_ISO8601_STR = /^(\\d{4})-?(\\d\\d)-?(\\d\\d)(?:T(\\d\\d)(?::?(\\d\\d)(?::?(\\d\\d)(?:\\.(\\d+))?)?)?(Z|([+-])(\\d\\d):?(\\d\\d))?)?$/;\n // 1 2 3 4 5 6 7 8 9 10 11\n function jsonStringToDate(string) {\n var match;\n if ((match = string.match(R_ISO8601_STR))) {\n var date = new Date(0),\n tzHour = 0,\n tzMin = 0,\n dateSetter = match[8] ? date.setUTCFullYear : date.setFullYear,\n timeSetter = match[8] ? date.setUTCHours : date.setHours;\n\n if (match[9]) {\n tzHour = toInt(match[9] + match[10]);\n tzMin = toInt(match[9] + match[11]);\n }\n dateSetter.call(date, toInt(match[1]), toInt(match[2]) - 1, toInt(match[3]));\n var h = toInt(match[4] || 0) - tzHour;\n var m = toInt(match[5] || 0) - tzMin;\n var s = toInt(match[6] || 0);\n var ms = Math.round(parseFloat('0.' + (match[7] || 0)) * 1000);\n timeSetter.call(date, h, m, s, ms);\n return date;\n }\n return string;\n }\n\n\n return function(date, format, timezone) {\n var text = '',\n parts = [],\n fn, match;\n\n format = format || 'mediumDate';\n format = $locale.DATETIME_FORMATS[format] || format;\n if (isString(date)) {\n date = NUMBER_STRING.test(date) ? toInt(date) : jsonStringToDate(date);\n }\n\n if (isNumber(date)) {\n date = new Date(date);\n }\n\n if (!isDate(date) || !isFinite(date.getTime())) {\n return date;\n }\n\n while (format) {\n match = DATE_FORMATS_SPLIT.exec(format);\n if (match) {\n parts = concat(parts, match, 1);\n format = parts.pop();\n } else {\n parts.push(format);\n format = null;\n }\n }\n\n var dateTimezoneOffset = date.getTimezoneOffset();\n if (timezone) {\n dateTimezoneOffset = timezoneToOffset(timezone, dateTimezoneOffset);\n date = convertTimezoneToLocal(date, timezone, true);\n }\n forEach(parts, function(value) {\n fn = DATE_FORMATS[value];\n text += fn ? fn(date, $locale.DATETIME_FORMATS, dateTimezoneOffset)\n : value === '\\'\\'' ? '\\'' : value.replace(/(^'|'$)/g, '').replace(/''/g, '\\'');\n });\n\n return text;\n };\n}\n\n\n/**\n * @ngdoc filter\n * @name json\n * @kind function\n *\n * @description\n * Allows you to convert a JavaScript object into JSON string.\n *\n * This filter is mostly useful for debugging. When using the double curly {{value}} notation\n * the binding is automatically converted to JSON.\n *\n * @param {*} object Any JavaScript object (including arrays and primitive types) to filter.\n * @param {number=} spacing The number of spaces to use per indentation, defaults to 2.\n * @returns {string} JSON string.\n *\n *\n * @example\n \n \n {{ {'name':'value'} | json }}\n {{ {'name':'value'} | json:4 }}\n \n \n it('should jsonify filtered objects', function() {\n expect(element(by.id('default-spacing')).getText()).toMatch(/\\{\\n {2}\"name\": ?\"value\"\\n}/);\n expect(element(by.id('custom-spacing')).getText()).toMatch(/\\{\\n {4}\"name\": ?\"value\"\\n}/);\n });\n \n \n *\n */\nfunction jsonFilter() {\n return function(object, spacing) {\n if (isUndefined(spacing)) {\n spacing = 2;\n }\n return toJson(object, spacing);\n };\n}\n\n\n/**\n * @ngdoc filter\n * @name lowercase\n * @kind function\n * @description\n * Converts string to lowercase.\n *\n * See the {@link ng.uppercase uppercase filter documentation} for a functionally identical example.\n *\n * @see angular.lowercase\n */\nvar lowercaseFilter = valueFn(lowercase);\n\n\n/**\n * @ngdoc filter\n * @name uppercase\n * @kind function\n * @description\n * Converts string to uppercase.\n * @example\n \n \n \n \n \n
{{title}}
\n \n {{title | uppercase}}
\n \n \n \n */\nvar uppercaseFilter = valueFn(uppercase);\n\n/**\n * @ngdoc filter\n * @name limitTo\n * @kind function\n *\n * @description\n * Creates a new array or string containing only a specified number of elements. The elements are\n * taken from either the beginning or the end of the source array, string or number, as specified by\n * the value and sign (positive or negative) of `limit`. Other array-like objects are also supported\n * (e.g. array subclasses, NodeLists, jqLite/jQuery collections etc). If a number is used as input,\n * it is converted to a string.\n *\n * @param {Array|ArrayLike|string|number} input - Array/array-like, string or number to be limited.\n * @param {string|number} limit - The length of the returned array or string. If the `limit` number\n * is positive, `limit` number of items from the beginning of the source array/string are copied.\n * If the number is negative, `limit` number of items from the end of the source array/string\n * are copied. The `limit` will be trimmed if it exceeds `array.length`. If `limit` is undefined,\n * the input will be returned unchanged.\n * @param {(string|number)=} begin - Index at which to begin limitation. As a negative index,\n * `begin` indicates an offset from the end of `input`. Defaults to `0`.\n * @returns {Array|string} A new sub-array or substring of length `limit` or less if the input had\n * less than `limit` elements.\n *\n * @example\n \n \n \n \n
\n
Output numbers: {{ numbers | limitTo:numLimit }}
\n
\n
Output letters: {{ letters | limitTo:letterLimit }}
\n
\n
Output long number: {{ longNumber | limitTo:longNumberLimit }}
\n
\n * (If the object has a `valueOf()` method that returns another object, then the returned object\n * will be used in subsequent steps.)\n * 2. If the object has a custom `toString()` method (i.e. not the one inherited from `Object`) that\n * returns a primitive, its return value will be used instead.
\n * (If the object has a `toString()` method that returns another object, then the returned object\n * will be used in subsequent steps.)\n * 3. No conversion; the object itself is used.\n *\n * ### The default comparator\n *\n * The default, built-in comparator should be sufficient for most usecases. In short, it compares\n * numbers numerically, strings alphabetically (and case-insensitively), for objects falls back to\n * using their index in the original collection, sorts values of different types by type and puts\n * `undefined` and `null` values at the end of the sorted list.\n *\n * More specifically, it follows these steps to determine the relative order of items:\n *\n * 1. If the compared values are of different types:\n * - If one of the values is undefined, consider it \"greater than\" the other.\n * - Else if one of the values is null, consider it \"greater than\" the other.\n * - Else compare the types themselves alphabetically.\n * 2. If both values are of type `string`, compare them alphabetically in a case- and\n * locale-insensitive way.\n * 3. If both values are objects, compare their indices instead.\n * 4. Otherwise, return:\n * - `0`, if the values are equal (by strict equality comparison, i.e. using `===`).\n * - `-1`, if the 1st value is \"less than\" the 2nd value (compared using the `<` operator).\n * - `1`, otherwise.\n *\n * **Note:** If you notice numbers not being sorted as expected, make sure they are actually being\n * saved as numbers and not strings.\n * **Note:** For the purpose of sorting, `null` and `undefined` are considered \"greater than\"\n * any other value (with undefined \"greater than\" null). This effectively means that `null`\n * and `undefined` values end up at the end of a list sorted in ascending order.\n * **Note:** `null` values use `'null'` as their type to be able to distinguish them from objects.\n *\n * @param {Array|ArrayLike} collection - The collection (array or array-like object) to sort.\n * @param {(Function|string|Array.)=} expression - A predicate (or list of\n * predicates) to be used by the comparator to determine the order of elements.\n *\n * Can be one of:\n *\n * - `Function`: A getter function. This function will be called with each item as argument and\n * the return value will be used for sorting.\n * - `string`: An AngularJS expression. This expression will be evaluated against each item and the\n * result will be used for sorting. For example, use `'label'` to sort by a property called\n * `label` or `'label.substring(0, 3)'` to sort by the first 3 characters of the `label`\n * property.
\n * (The result of a constant expression is interpreted as a property name to be used for\n * comparison. For example, use `'\"special name\"'` (note the extra pair of quotes) to sort by a\n * property called `special name`.)
\n * An expression can be optionally prefixed with `+` or `-` to control the sorting direction,\n * ascending or descending. For example, `'+label'` or `'-label'`. If no property is provided,\n * (e.g. `'+'` or `'-'`), the collection element itself is used in comparisons.\n * - `Array`: An array of function and/or string predicates. If a predicate cannot determine the\n * relative order of two items, the next predicate is used as a tie-breaker.\n *\n * **Note:** If the predicate is missing or empty then it defaults to `'+'`.\n *\n * @param {boolean=} reverse - If `true`, reverse the sorting order.\n * @param {(Function)=} comparator - The comparator function used to determine the relative order of\n * value pairs. If omitted, the built-in comparator will be used.\n *\n * @returns {Array} - The sorted array.\n *\n *\n * @example\n * ### Ordering a table with `ngRepeat`\n *\n * The example below demonstrates a simple {@link ngRepeat ngRepeat}, where the data is sorted by\n * age in descending order (expression is set to `'-age'`). The `comparator` is not set, which means\n * it defaults to the built-in comparator.\n *\n \n \n \n
\n \n | Name | \n Phone Number | \n Age | \n
\n \n | {{friend.name}} | \n {{friend.phone}} | \n {{friend.age}} | \n
\n
\n
\n *\n * @example\n * ### Changing parameters dynamically\n *\n * All parameters can be changed dynamically. The next example shows how you can make the columns of\n * a table sortable, by binding the `expression` and `reverse` parameters to scope properties.\n *\n \n \n \n
Sort by = {{propertyName}}; reverse = {{reverse}}\n
\n
\n
\n
\n \n | \n \n \n | \n \n \n \n | \n \n \n \n | \n
\n \n | {{friend.name}} | \n {{friend.phone}} | \n {{friend.age}} | \n
\n
\n
\n *\n * @example\n * ### Using `orderBy` inside a controller\n *\n * It is also possible to call the `orderBy` filter manually, by injecting `orderByFilter`, and\n * calling it with the desired parameters. (Alternatively, you could inject the `$filter` factory\n * and retrieve the `orderBy` filter with `$filter('orderBy')`.)\n *\n \n \n \n
Sort by = {{propertyName}}; reverse = {{reverse}}\n
\n
\n
\n
\n \n | \n \n \n | \n \n \n \n | \n \n \n \n | \n
\n \n | {{friend.name}} | \n {{friend.phone}} | \n {{friend.age}} | \n
\n
\n
\n *\n * @example\n * ### Using a custom comparator\n *\n * If you have very specific requirements about the way items are sorted, you can pass your own\n * comparator function. For example, you might need to compare some strings in a locale-sensitive\n * way. (When specifying a custom comparator, you also need to pass a value for the `reverse`\n * argument - passing `false` retains the default sorting order, i.e. ascending.)\n *\n \n \n \n
\n
Locale-sensitive Comparator
\n
\n \n | Name | \n Favorite Letter | \n
\n \n | {{friend.name}} | \n {{friend.favoriteLetter}} | \n
\n
\n
\n
\n
Default Comparator
\n
\n \n | Name | \n Favorite Letter | \n
\n \n | {{friend.name}} | \n {{friend.favoriteLetter}} | \n
\n
\n
\n
\n link 1 (link, don't reload)
\n link 2 (link, don't reload)
\n link 3 (link, reload!)
\n anchor (link, don't reload)
\n anchor (no link)
\n link (link, change location)\n \n \n it('should execute ng-click but not reload when href without value', function() {\n element(by.id('link-1')).click();\n expect(element(by.model('value')).getAttribute('value')).toEqual('1');\n expect(element(by.id('link-1')).getAttribute('href')).toBe('');\n });\n\n it('should execute ng-click but not reload when href empty string', function() {\n element(by.id('link-2')).click();\n expect(element(by.model('value')).getAttribute('value')).toEqual('2');\n expect(element(by.id('link-2')).getAttribute('href')).toBe('');\n });\n\n it('should execute ng-click and change url when ng-href specified', function() {\n expect(element(by.id('link-3')).getAttribute('href')).toMatch(/\\/123$/);\n\n element(by.id('link-3')).click();\n\n // At this point, we navigate away from an AngularJS page, so we need\n // to use browser.driver to get the base webdriver.\n\n browser.wait(function() {\n return browser.driver.getCurrentUrl().then(function(url) {\n return url.match(/\\/123$/);\n });\n }, 5000, 'page should navigate to /123');\n });\n\n it('should execute ng-click but not reload when href empty string and name specified', function() {\n element(by.id('link-4')).click();\n expect(element(by.model('value')).getAttribute('value')).toEqual('4');\n expect(element(by.id('link-4')).getAttribute('href')).toBe('');\n });\n\n it('should execute ng-click but not reload when no href but name specified', function() {\n element(by.id('link-5')).click();\n expect(element(by.model('value')).getAttribute('value')).toEqual('5');\n expect(element(by.id('link-5')).getAttribute('href')).toBe(null);\n });\n\n it('should only change url when only ng-href', function() {\n element(by.model('value')).clear();\n element(by.model('value')).sendKeys('6');\n expect(element(by.id('link-6')).getAttribute('href')).toMatch(/\\/6$/);\n\n element(by.id('link-6')).click();\n\n // At this point, we navigate away from an AngularJS page, so we need\n // to use browser.driver to get the base webdriver.\n browser.wait(function() {\n return browser.driver.getCurrentUrl().then(function(url) {\n return url.match(/\\/6$/);\n });\n }, 5000, 'page should navigate to /6');\n });\n \n \n */\n\n/**\n * @ngdoc directive\n * @name ngSrc\n * @restrict A\n * @priority 99\n *\n * @description\n * Using AngularJS markup like `{{hash}}` in a `src` attribute doesn't\n * work right: The browser will fetch from the URL with the literal\n * text `{{hash}}` until AngularJS replaces the expression inside\n * `{{hash}}`. The `ngSrc` directive solves this problem.\n *\n * The buggy way to write it:\n * ```html\n * ![\"Description\"/](\"http://www.gravatar.com/avatar/{{hash}}\")
\n * ```\n *\n * The correct way to write it:\n * ```html\n * ![\"Description\"]()
\n * ```\n *\n * @element IMG\n * @param {template} ngSrc any string which can contain `{{}}` markup.\n */\n\n/**\n * @ngdoc directive\n * @name ngSrcset\n * @restrict A\n * @priority 99\n *\n * @description\n * Using AngularJS markup like `{{hash}}` in a `srcset` attribute doesn't\n * work right: The browser will fetch from the URL with the literal\n * text `{{hash}}` until AngularJS replaces the expression inside\n * `{{hash}}`. The `ngSrcset` directive solves this problem.\n *\n * The buggy way to write it:\n * ```html\n * ![\"Description\"/]()
\n * ```\n *\n * The correct way to write it:\n * ```html\n * ![\"Description\"]()
\n * ```\n *\n * @element IMG\n * @param {template} ngSrcset any string which can contain `{{}}` markup.\n */\n\n/**\n * @ngdoc directive\n * @name ngDisabled\n * @restrict A\n * @priority 100\n *\n * @description\n *\n * This directive sets the `disabled` attribute on the element (typically a form control,\n * e.g. `input`, `button`, `select` etc.) if the\n * {@link guide/expression expression} inside `ngDisabled` evaluates to truthy.\n *\n * A special directive is necessary because we cannot use interpolation inside the `disabled`\n * attribute. See the {@link guide/interpolation interpolation guide} for more info.\n *\n * @example\n \n \n
\n \n \n \n it('should toggle button', function() {\n expect(element(by.css('button')).getAttribute('disabled')).toBeFalsy();\n element(by.model('checked')).click();\n expect(element(by.css('button')).getAttribute('disabled')).toBeTruthy();\n });\n \n \n *\n * @param {expression} ngDisabled If the {@link guide/expression expression} is truthy,\n * then the `disabled` attribute will be set on the element\n */\n\n\n/**\n * @ngdoc directive\n * @name ngChecked\n * @restrict A\n * @priority 100\n *\n * @description\n * Sets the `checked` attribute on the element, if the expression inside `ngChecked` is truthy.\n *\n * Note that this directive should not be used together with {@link ngModel `ngModel`},\n * as this can lead to unexpected behavior.\n *\n * A special directive is necessary because we cannot use interpolation inside the `checked`\n * attribute. See the {@link guide/interpolation interpolation guide} for more info.\n *\n * @example\n \n \n
\n \n \n \n it('should check both checkBoxes', function() {\n expect(element(by.id('checkFollower')).getAttribute('checked')).toBeFalsy();\n element(by.model('leader')).click();\n expect(element(by.id('checkFollower')).getAttribute('checked')).toBeTruthy();\n });\n \n \n *\n * @element INPUT\n * @param {expression} ngChecked If the {@link guide/expression expression} is truthy,\n * then the `checked` attribute will be set on the element\n */\n\n\n/**\n * @ngdoc directive\n * @name ngReadonly\n * @restrict A\n * @priority 100\n *\n * @description\n *\n * Sets the `readonly` attribute on the element, if the expression inside `ngReadonly` is truthy.\n * Note that `readonly` applies only to `input` elements with specific types. [See the input docs on\n * MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-readonly) for more information.\n *\n * A special directive is necessary because we cannot use interpolation inside the `readonly`\n * attribute. See the {@link guide/interpolation interpolation guide} for more info.\n *\n * @example\n \n \n
\n \n \n \n it('should toggle readonly attr', function() {\n expect(element(by.css('[type=\"text\"]')).getAttribute('readonly')).toBeFalsy();\n element(by.model('checked')).click();\n expect(element(by.css('[type=\"text\"]')).getAttribute('readonly')).toBeTruthy();\n });\n \n \n *\n * @element INPUT\n * @param {expression} ngReadonly If the {@link guide/expression expression} is truthy,\n * then special attribute \"readonly\" will be set on the element\n */\n\n\n/**\n * @ngdoc directive\n * @name ngSelected\n * @restrict A\n * @priority 100\n *\n * @description\n *\n * Sets the `selected` attribute on the element, if the expression inside `ngSelected` is truthy.\n *\n * A special directive is necessary because we cannot use interpolation inside the `selected`\n * attribute. See the {@link guide/interpolation interpolation guide} for more info.\n *\n * \n * **Note:** `ngSelected` does not interact with the `select` and `ngModel` directives, it only\n * sets the `selected` attribute on the element. If you are using `ngModel` on the select, you\n * should not use `ngSelected` on the options, as `ngModel` will set the select value and\n * selected options.\n *
\n *\n * @example\n \n \n
\n \n \n \n it('should select Greetings!', function() {\n expect(element(by.id('greet')).getAttribute('selected')).toBeFalsy();\n element(by.model('selected')).click();\n expect(element(by.id('greet')).getAttribute('selected')).toBeTruthy();\n });\n \n \n *\n * @element OPTION\n * @param {expression} ngSelected If the {@link guide/expression expression} is truthy,\n * then special attribute \"selected\" will be set on the element\n */\n\n/**\n * @ngdoc directive\n * @name ngOpen\n * @restrict A\n * @priority 100\n *\n * @description\n *\n * Sets the `open` attribute on the element, if the expression inside `ngOpen` is truthy.\n *\n * A special directive is necessary because we cannot use interpolation inside the `open`\n * attribute. See the {@link guide/interpolation interpolation guide} for more info.\n *\n * ## A note about browser compatibility\n *\n * Internet Explorer and Edge do not support the `details` element, it is\n * recommended to use {@link ng.ngShow} and {@link ng.ngHide} instead.\n *\n * @example\n \n \n
\n \n List
\n \n - Apple
\n - Orange
\n - Durian
\n
\n \n \n \n it('should toggle open', function() {\n expect(element(by.id('details')).getAttribute('open')).toBeFalsy();\n element(by.model('open')).click();\n expect(element(by.id('details')).getAttribute('open')).toBeTruthy();\n });\n \n \n *\n * @element DETAILS\n * @param {expression} ngOpen If the {@link guide/expression expression} is truthy,\n * then special attribute \"open\" will be set on the element\n */\n\nvar ngAttributeAliasDirectives = {};\n\n// boolean attrs are evaluated\nforEach(BOOLEAN_ATTR, function(propName, attrName) {\n // binding to multiple is not supported\n if (propName === 'multiple') return;\n\n function defaultLinkFn(scope, element, attr) {\n scope.$watch(attr[normalized], function ngBooleanAttrWatchAction(value) {\n attr.$set(attrName, !!value);\n });\n }\n\n var normalized = directiveNormalize('ng-' + attrName);\n var linkFn = defaultLinkFn;\n\n if (propName === 'checked') {\n linkFn = function(scope, element, attr) {\n // ensuring ngChecked doesn't interfere with ngModel when both are set on the same input\n if (attr.ngModel !== attr[normalized]) {\n defaultLinkFn(scope, element, attr);\n }\n };\n }\n\n ngAttributeAliasDirectives[normalized] = function() {\n return {\n restrict: 'A',\n priority: 100,\n link: linkFn\n };\n };\n});\n\n// aliased input attrs are evaluated\nforEach(ALIASED_ATTR, function(htmlAttr, ngAttr) {\n ngAttributeAliasDirectives[ngAttr] = function() {\n return {\n priority: 100,\n link: function(scope, element, attr) {\n //special case ngPattern when a literal regular expression value\n //is used as the expression (this way we don't have to watch anything).\n if (ngAttr === 'ngPattern' && attr.ngPattern.charAt(0) === '/') {\n var match = attr.ngPattern.match(REGEX_STRING_REGEXP);\n if (match) {\n attr.$set('ngPattern', new RegExp(match[1], match[2]));\n return;\n }\n }\n\n scope.$watch(attr[ngAttr], function ngAttrAliasWatchAction(value) {\n attr.$set(ngAttr, value);\n });\n }\n };\n };\n});\n\n// ng-src, ng-srcset, ng-href are interpolated\nforEach(['src', 'srcset', 'href'], function(attrName) {\n var normalized = directiveNormalize('ng-' + attrName);\n ngAttributeAliasDirectives[normalized] = ['$sce', function($sce) {\n return {\n priority: 99, // it needs to run after the attributes are interpolated\n link: function(scope, element, attr) {\n var propName = attrName,\n name = attrName;\n\n if (attrName === 'href' &&\n toString.call(element.prop('href')) === '[object SVGAnimatedString]') {\n name = 'xlinkHref';\n attr.$attr[name] = 'xlink:href';\n propName = null;\n }\n\n // We need to sanitize the url at least once, in case it is a constant\n // non-interpolated attribute.\n attr.$set(normalized, $sce.getTrustedMediaUrl(attr[normalized]));\n\n attr.$observe(normalized, function(value) {\n if (!value) {\n if (attrName === 'href') {\n attr.$set(name, null);\n }\n return;\n }\n\n attr.$set(name, value);\n\n // Support: IE 9-11 only\n // On IE, if \"ng:src\" directive declaration is used and \"src\" attribute doesn't exist\n // then calling element.setAttribute('src', 'foo') doesn't do anything, so we need\n // to set the property as well to achieve the desired effect.\n // We use attr[attrName] value since $set might have sanitized the url.\n if (msie && propName) element.prop(propName, attr[name]);\n });\n }\n };\n }];\n});\n\n/* global -nullFormCtrl, -PENDING_CLASS, -SUBMITTED_CLASS\n */\nvar nullFormCtrl = {\n $addControl: noop,\n $getControls: valueFn([]),\n $$renameControl: nullFormRenameControl,\n $removeControl: noop,\n $setValidity: noop,\n $setDirty: noop,\n $setPristine: noop,\n $setSubmitted: noop,\n $$setSubmitted: noop\n},\nPENDING_CLASS = 'ng-pending',\nSUBMITTED_CLASS = 'ng-submitted';\n\nfunction nullFormRenameControl(control, name) {\n control.$name = name;\n}\n\n/**\n * @ngdoc type\n * @name form.FormController\n *\n * @property {boolean} $pristine True if user has not interacted with the form yet.\n * @property {boolean} $dirty True if user has already interacted with the form.\n * @property {boolean} $valid True if all of the containing forms and controls are valid.\n * @property {boolean} $invalid True if at least one containing control or form is invalid.\n * @property {boolean} $submitted True if user has submitted the form even if its invalid.\n *\n * @property {Object} $pending An object hash, containing references to controls or forms with\n * pending validators, where:\n *\n * - keys are validations tokens (error names).\n * - values are arrays of controls or forms that have a pending validator for the given error name.\n *\n * See {@link form.FormController#$error $error} for a list of built-in validation tokens.\n *\n * @property {Object} $error An object hash, containing references to controls or forms with failing\n * validators, where:\n *\n * - keys are validation tokens (error names),\n * - values are arrays of controls or forms that have a failing validator for the given error name.\n *\n * Built-in validation tokens:\n * - `email`\n * - `max`\n * - `maxlength`\n * - `min`\n * - `minlength`\n * - `number`\n * - `pattern`\n * - `required`\n * - `url`\n * - `date`\n * - `datetimelocal`\n * - `time`\n * - `week`\n * - `month`\n *\n * @description\n * `FormController` keeps track of all its controls and nested forms as well as the state of them,\n * such as being valid/invalid or dirty/pristine.\n *\n * Each {@link ng.directive:form form} directive creates an instance\n * of `FormController`.\n *\n */\n//asks for $scope to fool the BC controller module\nFormController.$inject = ['$element', '$attrs', '$scope', '$animate', '$interpolate'];\nfunction FormController($element, $attrs, $scope, $animate, $interpolate) {\n this.$$controls = [];\n\n // init state\n this.$error = {};\n this.$$success = {};\n this.$pending = undefined;\n this.$name = $interpolate($attrs.name || $attrs.ngForm || '')($scope);\n this.$dirty = false;\n this.$pristine = true;\n this.$valid = true;\n this.$invalid = false;\n this.$submitted = false;\n this.$$parentForm = nullFormCtrl;\n\n this.$$element = $element;\n this.$$animate = $animate;\n\n setupValidity(this);\n}\n\nFormController.prototype = {\n /**\n * @ngdoc method\n * @name form.FormController#$rollbackViewValue\n *\n * @description\n * Rollback all form controls pending updates to the `$modelValue`.\n *\n * Updates may be pending by a debounced event or because the input is waiting for a some future\n * event defined in `ng-model-options`. This method is typically needed by the reset button of\n * a form that uses `ng-model-options` to pend updates.\n */\n $rollbackViewValue: function() {\n forEach(this.$$controls, function(control) {\n control.$rollbackViewValue();\n });\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$commitViewValue\n *\n * @description\n * Commit all form controls pending updates to the `$modelValue`.\n *\n * Updates may be pending by a debounced event or because the input is waiting for a some future\n * event defined in `ng-model-options`. This method is rarely needed as `NgModelController`\n * usually handles calling this in response to input events.\n */\n $commitViewValue: function() {\n forEach(this.$$controls, function(control) {\n control.$commitViewValue();\n });\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$addControl\n * @param {object} control control object, either a {@link form.FormController} or an\n * {@link ngModel.NgModelController}\n *\n * @description\n * Register a control with the form. Input elements using ngModelController do this automatically\n * when they are linked.\n *\n * Note that the current state of the control will not be reflected on the new parent form. This\n * is not an issue with normal use, as freshly compiled and linked controls are in a `$pristine`\n * state.\n *\n * However, if the method is used programmatically, for example by adding dynamically created controls,\n * or controls that have been previously removed without destroying their corresponding DOM element,\n * it's the developers responsibility to make sure the current state propagates to the parent form.\n *\n * For example, if an input control is added that is already `$dirty` and has `$error` properties,\n * calling `$setDirty()` and `$validate()` afterwards will propagate the state to the parent form.\n */\n $addControl: function(control) {\n // Breaking change - before, inputs whose name was \"hasOwnProperty\" were quietly ignored\n // and not added to the scope. Now we throw an error.\n assertNotHasOwnProperty(control.$name, 'input');\n this.$$controls.push(control);\n\n if (control.$name) {\n this[control.$name] = control;\n }\n\n control.$$parentForm = this;\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$getControls\n * @returns {Array} the controls that are currently part of this form\n *\n * @description\n * This method returns a **shallow copy** of the controls that are currently part of this form.\n * The controls can be instances of {@link form.FormController `FormController`}\n * ({@link ngForm \"child-forms\"}) and of {@link ngModel.NgModelController `NgModelController`}.\n * If you need access to the controls of child-forms, you have to call `$getControls()`\n * recursively on them.\n * This can be used for example to iterate over all controls to validate them.\n *\n * The controls can be accessed normally, but adding to, or removing controls from the array has\n * no effect on the form. Instead, use {@link form.FormController#$addControl `$addControl()`} and\n * {@link form.FormController#$removeControl `$removeControl()`} for this use-case.\n * Likewise, adding a control to, or removing a control from the form is not reflected\n * in the shallow copy. That means you should get a fresh copy from `$getControls()` every time\n * you need access to the controls.\n */\n $getControls: function() {\n return shallowCopy(this.$$controls);\n },\n\n // Private API: rename a form control\n $$renameControl: function(control, newName) {\n var oldName = control.$name;\n\n if (this[oldName] === control) {\n delete this[oldName];\n }\n this[newName] = control;\n control.$name = newName;\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$removeControl\n * @param {object} control control object, either a {@link form.FormController} or an\n * {@link ngModel.NgModelController}\n *\n * @description\n * Deregister a control from the form.\n *\n * Input elements using ngModelController do this automatically when they are destroyed.\n *\n * Note that only the removed control's validation state (`$errors`etc.) will be removed from the\n * form. `$dirty`, `$submitted` states will not be changed, because the expected behavior can be\n * different from case to case. For example, removing the only `$dirty` control from a form may or\n * may not mean that the form is still `$dirty`.\n */\n $removeControl: function(control) {\n if (control.$name && this[control.$name] === control) {\n delete this[control.$name];\n }\n forEach(this.$pending, function(value, name) {\n // eslint-disable-next-line no-invalid-this\n this.$setValidity(name, null, control);\n }, this);\n forEach(this.$error, function(value, name) {\n // eslint-disable-next-line no-invalid-this\n this.$setValidity(name, null, control);\n }, this);\n forEach(this.$$success, function(value, name) {\n // eslint-disable-next-line no-invalid-this\n this.$setValidity(name, null, control);\n }, this);\n\n arrayRemove(this.$$controls, control);\n control.$$parentForm = nullFormCtrl;\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$setDirty\n *\n * @description\n * Sets the form to a dirty state.\n *\n * This method can be called to add the 'ng-dirty' class and set the form to a dirty\n * state (ng-dirty class). This method will also propagate to parent forms.\n */\n $setDirty: function() {\n this.$$animate.removeClass(this.$$element, PRISTINE_CLASS);\n this.$$animate.addClass(this.$$element, DIRTY_CLASS);\n this.$dirty = true;\n this.$pristine = false;\n this.$$parentForm.$setDirty();\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$setPristine\n *\n * @description\n * Sets the form to its pristine state.\n *\n * This method sets the form's `$pristine` state to true, the `$dirty` state to false, removes\n * the `ng-dirty` class and adds the `ng-pristine` class. Additionally, it sets the `$submitted`\n * state to false.\n *\n * This method will also propagate to all the controls contained in this form.\n *\n * Setting a form back to a pristine state is often useful when we want to 'reuse' a form after\n * saving or resetting it.\n */\n $setPristine: function() {\n this.$$animate.setClass(this.$$element, PRISTINE_CLASS, DIRTY_CLASS + ' ' + SUBMITTED_CLASS);\n this.$dirty = false;\n this.$pristine = true;\n this.$submitted = false;\n forEach(this.$$controls, function(control) {\n control.$setPristine();\n });\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$setUntouched\n *\n * @description\n * Sets the form to its untouched state.\n *\n * This method can be called to remove the 'ng-touched' class and set the form controls to their\n * untouched state (ng-untouched class).\n *\n * Setting a form controls back to their untouched state is often useful when setting the form\n * back to its pristine state.\n */\n $setUntouched: function() {\n forEach(this.$$controls, function(control) {\n control.$setUntouched();\n });\n },\n\n /**\n * @ngdoc method\n * @name form.FormController#$setSubmitted\n *\n * @description\n * Sets the form to its `$submitted` state. This will also set `$submitted` on all child and\n * parent forms of the form.\n */\n $setSubmitted: function() {\n var rootForm = this;\n while (rootForm.$$parentForm && (rootForm.$$parentForm !== nullFormCtrl)) {\n rootForm = rootForm.$$parentForm;\n }\n rootForm.$$setSubmitted();\n },\n\n $$setSubmitted: function() {\n this.$$animate.addClass(this.$$element, SUBMITTED_CLASS);\n this.$submitted = true;\n forEach(this.$$controls, function(control) {\n if (control.$$setSubmitted) {\n control.$$setSubmitted();\n }\n });\n }\n};\n\n/**\n * @ngdoc method\n * @name form.FormController#$setValidity\n *\n * @description\n * Change the validity state of the form, and notify the parent form (if any).\n *\n * Application developers will rarely need to call this method directly. It is used internally, by\n * {@link ngModel.NgModelController#$setValidity NgModelController.$setValidity()}, to propagate a\n * control's validity state to the parent `FormController`.\n *\n * @param {string} validationErrorKey Name of the validator. The `validationErrorKey` will be\n * assigned to either `$error[validationErrorKey]` or `$pending[validationErrorKey]` (for\n * unfulfilled `$asyncValidators`), so that it is available for data-binding. The\n * `validationErrorKey` should be in camelCase and will get converted into dash-case for\n * class name. Example: `myError` will result in `ng-valid-my-error` and\n * `ng-invalid-my-error` classes and can be bound to as `{{ someForm.$error.myError }}`.\n * @param {boolean} isValid Whether the current state is valid (true), invalid (false), pending\n * (undefined), or skipped (null). Pending is used for unfulfilled `$asyncValidators`.\n * Skipped is used by AngularJS when validators do not run because of parse errors and when\n * `$asyncValidators` do not run because any of the `$validators` failed.\n * @param {NgModelController | FormController} controller - The controller whose validity state is\n * triggering the change.\n */\naddSetValidityMethod({\n clazz: FormController,\n set: function(object, property, controller) {\n var list = object[property];\n if (!list) {\n object[property] = [controller];\n } else {\n var index = list.indexOf(controller);\n if (index === -1) {\n list.push(controller);\n }\n }\n },\n unset: function(object, property, controller) {\n var list = object[property];\n if (!list) {\n return;\n }\n arrayRemove(list, controller);\n if (list.length === 0) {\n delete object[property];\n }\n }\n});\n\n/**\n * @ngdoc directive\n * @name ngForm\n * @restrict EAC\n *\n * @description\n * Helper directive that makes it possible to create control groups inside a\n * {@link ng.directive:form `form`} directive.\n * These \"child forms\" can be used, for example, to determine the validity of a sub-group of\n * controls.\n *\n * \n * **Note**: `ngForm` cannot be used as a replacement for `
\n *\n * @param {string=} ngForm|name Name of the form. If specified, the form controller will\n * be published into the related scope, under this name.\n *\n */\n\n /**\n * @ngdoc directive\n * @name form\n * @restrict E\n *\n * @description\n * Directive that instantiates\n * {@link form.FormController FormController}.\n *\n * If the `name` attribute is specified, the form controller is published onto the current scope under\n * this name.\n *\n * ## Alias: {@link ng.directive:ngForm `ngForm`}\n *\n * In AngularJS, forms can be nested. This means that the outer form is valid when all of the child\n * forms are valid as well. However, browsers do not allow nesting of `