@reactivex/rxjs

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <base data-ice="baseUrl" href="../../"> <title data-ice="title">es6/Subscriber.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" 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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/Subscriber.js</h1> <pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { isFunction } from './util/isFunction'; import { Subscription } from './Subscription'; import { empty as emptyObserver } from './Observer'; import { $$rxSubscriber } from './symbol/rxSubscriber'; /** * Implements the {@link Observer} interface and extends the * {@link Subscription} class. While the {@link Observer} is the public API for * consuming the values of an {@link Observable}, all Observers get converted to * a Subscriber, in order to provide Subscription-like capabilities such as * `unsubscribe`. Subscriber is a common type in RxJS, and crucial for * implementing operators, but it is rarely used as a public API. * * @class Subscriber<T> */ export var Subscriber = (function (_super) { __extends(Subscriber, _super); /** * @param {Observer|function(value: T): void} [destinationOrNext] A partially * defined Observer or a `next` callback function. * @param {function(e: ?any): void} [error] The `error` callback of an * Observer. * @param {function(): void} [complete] The `complete` callback of an * Observer. */ function Subscriber(destinationOrNext, error, complete) { _super.call(this); this.syncErrorValue = null; this.syncErrorThrown = false; this.syncErrorThrowable = false; this.isStopped = false; switch (arguments.length) { case 0: this.destination = emptyObserver; break; case 1: if (!destinationOrNext) { this.destination = emptyObserver; break; } if (typeof destinationOrNext === 'object') { if (destinationOrNext instanceof Subscriber) { this.destination = destinationOrNext; this.destination.add(this); } else { this.syncErrorThrowable = true; this.destination = new SafeSubscriber(this, destinationOrNext); } break; } default: this.syncErrorThrowable = true; this.destination = new SafeSubscriber(this, destinationOrNext, error, complete); break; } } Subscriber.prototype[$$rxSubscriber] = function () { return this; }; /** * A static factory for a Subscriber, given a (potentially partial) definition * of an Observer. * @param {function(x: ?T): void} [next] The `next` callback of an Observer. * @param {function(e: ?any): void} [error] The `error` callback of an * Observer. * @param {function(): void} [complete] The `complete` callback of an * Observer. * @return {Subscriber<T>} A Subscriber wrapping the (partially defined) * Observer represented by the given arguments. */ Subscriber.create = function (next, error, complete) { var subscriber = new Subscriber(next, error, complete); subscriber.syncErrorThrowable = false; return subscriber; }; /** * The {@link Observer} callback to receive notifications of type `next` from * the Observable, with a value. The Observable may call this method 0 or more * times. * @param {T} [value] The `next` value. * @return {void} */ Subscriber.prototype.next = function (value) { if (!this.isStopped) { this._next(value); } }; /** * The {@link Observer} callback to receive notifications of type `error` from * the Observable, with an attached {@link Error}. Notifies the Observer that * the Observable has experienced an error condition. * @param {any} [err] The `error` exception. * @return {void} */ Subscriber.prototype.error = function (err) { if (!this.isStopped) { this.isStopped = true; this._error(err); } }; /** * The {@link Observer} callback to receive a valueless notification of type * `complete` from the Observable. Notifies the Observer that the Observable * has finished sending push-based notifications. * @return {void} */ Subscriber.prototype.complete = function () { if (!this.isStopped) { this.isStopped = true; this._complete(); } }; Subscriber.prototype.unsubscribe = function () { if (this.closed) { return; } this.isStopped = true; _super.prototype.unsubscribe.call(this); }; Subscriber.prototype._next = function (value) { this.destination.next(value); }; Subscriber.prototype._error = function (err) { this.destination.error(err); this.unsubscribe(); }; Subscriber.prototype._complete = function () { this.destination.complete(); this.unsubscribe(); }; return Subscriber; }(Subscription)); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ var SafeSubscriber = (function (_super) { __extends(SafeSubscriber, _super); function SafeSubscriber(_parent, observerOrNext, error, complete) { _super.call(this); this._parent = _parent; var next; var context = this; if (isFunction(observerOrNext)) { next = observerOrNext; } else if (observerOrNext) { context = observerOrNext; next = observerOrNext.next; error = observerOrNext.error; complete = observerOrNext.complete; if (isFunction(context.unsubscribe)) { this.add(context.unsubscribe.bind(context)); } context.unsubscribe = this.unsubscribe.bind(this); } this._context = context; this._next = next; this._error = error; this._complete = complete; } SafeSubscriber.prototype.next = function (value) { if (!this.isStopped && this._next) { var _parent = this._parent; if (!_parent.syncErrorThrowable) { this.__tryOrUnsub(this._next, value); } else if (this.__tryOrSetError(_parent, this._next, value)) { this.unsubscribe(); } } }; SafeSubscriber.prototype.error = function (err) { if (!this.isStopped) { var _parent = this._parent; if (this._error) { if (!_parent.syncErrorThrowable) { this.__tryOrUnsub(this._error, err); this.unsubscribe(); } else { this.__tryOrSetError(_parent, this._error, err); this.unsubscribe(); } } else if (!_parent.syncErrorThrowable) { this.unsubscribe(); throw err; } else { _parent.syncErrorValue = err; _parent.syncErrorThrown = true; this.unsubscribe(); } } }; SafeSubscriber.prototype.complete = function () { if (!this.isStopped) { var _parent = this._parent; if (this._complete) { if (!_parent.syncErrorThrowable) { this.__tryOrUnsub(this._complete); this.unsubscribe(); } else { this.__tryOrSetError(_parent, this._complete); this.unsubscribe(); } } else { this.unsubscribe(); } } }; SafeSubscriber.prototype.__tryOrUnsub = function (fn, value) { try { fn.call(this._context, value); } catch (err) { this.unsubscribe(); throw err; } }; SafeSubscriber.prototype.__tryOrSetError = function (parent, fn, value) { try { fn.call(this._context, value); } catch (err) { parent.syncErrorValue = err; parent.syncErrorThrown = true; return true; } return false; }; SafeSubscriber.prototype._unsubscribe = function () { var _parent = this._parent; this._context = null; this._parent = null; _parent.unsubscribe(); }; return SafeSubscriber; }(Subscriber)); //# sourceMappingURL=Subscriber.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span data-ice="esdocVersion">(0.4.8)</span></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script src="script/inherited-summary.js"></script> <script src="script/test-summary.js"></script> <script src="script/inner-link.js"></script> <script src="script/patch-for-local.js"></script> </body> </html>