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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <base data-ice="baseUrl" href="../../"> <title data-ice="title">es6/Subject.js | RxJS API Document</title> <link type="text/css" rel="stylesheet" href="css/style.css"> <link type="text/css" rel="stylesheet" href="css/prettify-tomorrow.css"> <script src="script/prettify/prettify.js"></script> <script src="script/manual.js"></script> <script data-ice="userScript" src="user/script/0-Rx.js"></script> <script data-ice="userScript" src="user/script/1-devtools-welcome.js"></script> <script data-ice="userScript" src="user/script/2-custom-manual-styles.js"></script> <script data-ice="userScript" src="user/script/3-decision-tree-widget.min.js"></script> <script data-ice="userScript" src="user/script/4-theme-toggler.js"></script> <link data-ice="userStyle" rel="stylesheet" href="user/css/0-main.css"> </head> <body class="layout-container" data-ice="rootContainer"> <header> <a href="./">Home</a> <a href="./manual/index.html" data-ice="manualHeaderLink">Manual</a> <a href="identifiers.html">Reference</a> <a href="source.html">Source</a> <a href="test.html" data-ice="testLink">Test</a> <a data-ice="repoURL" href="https://github.com/ReactiveX/RxJS" class="repo-url-github">Repository</a> <div class="search-box"> <span> <img src="./image/search.png"> <span class="search-input-edge"></span><input class="search-input"><span class="search-input-edge"></span> </span> <ul class="search-result"></ul> </div> </header> <nav class="navigation" data-ice="nav"><div> <ul> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AsyncSubject">AsyncSubject</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-BehaviorSubject">BehaviorSubject</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Notification">Notification</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Observable">Observable</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-ReplaySubject">ReplaySubject</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Scheduler">Scheduler</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AnonymousSubject">AnonymousSubject</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Subject">Subject</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-SubjectSubscriber">SubjectSubscriber</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Subscriber">Subscriber</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Subscription">Subscription</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-typedef">T</span><span data-ice="name"><span><a href="typedef/index.html#static-typedef-Rx.Scheduler">Rx.Scheduler</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-typedef">T</span><span data-ice="name"><span><a href="typedef/index.html#static-typedef-Rx.Symbol">Rx.Symbol</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">observable</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-ConnectableObservable">ConnectableObservable</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">observable/dom</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AjaxError">AjaxError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AjaxResponse">AjaxResponse</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AjaxTimeoutError">AjaxTimeoutError</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">operator</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-GroupedObservable">GroupedObservable</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">scheduler</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Action">Action</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">util</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-ArgumentOutOfRangeError">ArgumentOutOfRangeError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-EmptyError">EmptyError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-ObjectUnsubscribedError">ObjectUnsubscribedError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-TimeoutError">TimeoutError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-UnsubscriptionError">UnsubscriptionError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-root">root</a></span></span></li> </ul> </div> </nav> <div class="content" data-ice="content"><h1 data-ice="title">es6/Subject.js</h1> <pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { Observable } from &apos;./Observable&apos;; import { Subscriber } from &apos;./Subscriber&apos;; import { Subscription } from &apos;./Subscription&apos;; import { ObjectUnsubscribedError } from &apos;./util/ObjectUnsubscribedError&apos;; import { SubjectSubscription } from &apos;./SubjectSubscription&apos;; import { $$rxSubscriber } from &apos;./symbol/rxSubscriber&apos;; /** * @class SubjectSubscriber&lt;T&gt; */ export var SubjectSubscriber = (function (_super) { __extends(SubjectSubscriber, _super); function SubjectSubscriber(destination) { _super.call(this, destination); this.destination = destination; } return SubjectSubscriber; }(Subscriber)); /** * @class Subject&lt;T&gt; */ export var Subject = (function (_super) { __extends(Subject, _super); function Subject() { _super.call(this); this.observers = []; this.closed = false; this.isStopped = false; this.hasError = false; this.thrownError = null; } Subject.prototype[$$rxSubscriber] = function () { return new SubjectSubscriber(this); }; Subject.prototype.lift = function (operator) { var subject = new AnonymousSubject(this, this); subject.operator = operator; return subject; }; Subject.prototype.next = function (value) { if (this.closed) { throw new ObjectUnsubscribedError(); } if (!this.isStopped) { var observers = this.observers; var len = observers.length; var copy = observers.slice(); for (var i = 0; i &lt; len; i++) { copy[i].next(value); } } }; Subject.prototype.error = function (err) { if (this.closed) { throw new ObjectUnsubscribedError(); } this.hasError = true; this.thrownError = err; this.isStopped = true; var observers = this.observers; var len = observers.length; var copy = observers.slice(); for (var i = 0; i &lt; len; i++) { copy[i].error(err); } this.observers.length = 0; }; Subject.prototype.complete = function () { if (this.closed) { throw new ObjectUnsubscribedError(); } this.isStopped = true; var observers = this.observers; var len = observers.length; var copy = observers.slice(); for (var i = 0; i &lt; len; i++) { copy[i].complete(); } this.observers.length = 0; }; Subject.prototype.unsubscribe = function () { this.isStopped = true; this.closed = true; this.observers = null; }; Subject.prototype._subscribe = function (subscriber) { if (this.closed) { throw new ObjectUnsubscribedError(); } else if (this.hasError) { subscriber.error(this.thrownError); return Subscription.EMPTY; } else if (this.isStopped) { subscriber.complete(); return Subscription.EMPTY; } else { this.observers.push(subscriber); return new SubjectSubscription(this, subscriber); } }; Subject.prototype.asObservable = function () { var observable = new Observable(); observable.source = this; return observable; }; Subject.create = function (destination, source) { return new AnonymousSubject(destination, source); }; return Subject; }(Observable)); /** * @class AnonymousSubject&lt;T&gt; */ export var AnonymousSubject = (function (_super) { __extends(AnonymousSubject, _super); function AnonymousSubject(destination, source) { _super.call(this); this.destination = destination; this.source = source; } AnonymousSubject.prototype.next = function (value) { var destination = this.destination; if (destination &amp;&amp; destination.next) { destination.next(value); } }; AnonymousSubject.prototype.error = function (err) { var destination = this.destination; if (destination &amp;&amp; destination.error) { this.destination.error(err); } }; AnonymousSubject.prototype.complete = function () { var destination = this.destination; if (destination &amp;&amp; destination.complete) { this.destination.complete(); } }; AnonymousSubject.prototype._subscribe = function (subscriber) { var source = this.source; if (source) { return this.source.subscribe(subscriber); } else { return Subscription.EMPTY; } }; return AnonymousSubject; }(Subject)); //# sourceMappingURL=Subject.js.map</code></pre> </div> <footer 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