@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
201 lines (191 loc) • 12 kB
HTML
<html>
<head>
<meta charset="utf-8">
<base data-ice="baseUrl" href="../../../">
<title data-ice="title">es6/observable/PromiseObservable.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/observable/PromiseObservable.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { root } from '../util/root';
import { Observable } from '../Observable';
/**
* We need this JSDoc comment for affecting ESDoc.
* @extends {Ignored}
* @hide true
*/
export var PromiseObservable = (function (_super) {
__extends(PromiseObservable, _super);
function PromiseObservable(promise, scheduler) {
_super.call(this);
this.promise = promise;
this.scheduler = scheduler;
}
/**
* Converts a Promise to an Observable.
*
* <span class="informal">Returns an Observable that just emits the Promise's
* resolved value, then completes.</span>
*
* Converts an ES2015 Promise or a Promises/A+ spec compliant Promise to an
* Observable. If the Promise resolves with a value, the output Observable
* emits that resolved value as a `next`, and then completes. If the Promise
* is rejected, then the output Observable emits the corresponding Error.
*
* @example <caption>Convert the Promise returned by Fetch to an Observable</caption>
* var result = Rx.Observable.fromPromise(fetch('http://myserver.com/'));
* result.subscribe(x => console.log(x), e => console.error(e));
*
* @see {@link bindCallback}
* @see {@link from}
*
* @param {Promise<T>} promise The promise to be converted.
* @param {Scheduler} [scheduler] An optional Scheduler to use for scheduling
* the delivery of the resolved value (or the rejection).
* @return {Observable<T>} An Observable which wraps the Promise.
* @static true
* @name fromPromise
* @owner Observable
*/
PromiseObservable.create = function (promise, scheduler) {
return new PromiseObservable(promise, scheduler);
};
PromiseObservable.prototype._subscribe = function (subscriber) {
var _this = this;
var promise = this.promise;
var scheduler = this.scheduler;
if (scheduler == null) {
if (this._isScalar) {
if (!subscriber.closed) {
subscriber.next(this.value);
subscriber.complete();
}
}
else {
promise.then(function (value) {
_this.value = value;
_this._isScalar = true;
if (!subscriber.closed) {
subscriber.next(value);
subscriber.complete();
}
}, function (err) {
if (!subscriber.closed) {
subscriber.error(err);
}
})
.then(null, function (err) {
// escape the promise trap, throw unhandled errors
root.setTimeout(function () { throw err; });
});
}
}
else {
if (this._isScalar) {
if (!subscriber.closed) {
return scheduler.schedule(dispatchNext, 0, { value: this.value, subscriber: subscriber });
}
}
else {
promise.then(function (value) {
_this.value = value;
_this._isScalar = true;
if (!subscriber.closed) {
subscriber.add(scheduler.schedule(dispatchNext, 0, { value: value, subscriber: subscriber }));
}
}, function (err) {
if (!subscriber.closed) {
subscriber.add(scheduler.schedule(dispatchError, 0, { err: err, subscriber: subscriber }));
}
})
.then(null, function (err) {
// escape the promise trap, throw unhandled errors
root.setTimeout(function () { throw err; });
});
}
}
};
return PromiseObservable;
}(Observable));
function dispatchNext(arg) {
var value = arg.value, subscriber = arg.subscriber;
if (!subscriber.closed) {
subscriber.next(value);
subscriber.complete();
}
}
function dispatchError(arg) {
var err = arg.err, subscriber = arg.subscriber;
if (!subscriber.closed) {
subscriber.error(err);
}
}
//# sourceMappingURL=PromiseObservable.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>