75 lines
2.9 KiB
JavaScript
75 lines
2.9 KiB
JavaScript
"use strict";
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var __extends = (this && this.__extends) || function (d, b) {
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for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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var OuterSubscriber_1 = require('../OuterSubscriber');
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var subscribeToResult_1 = require('../util/subscribeToResult');
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/**
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* Emits the values emitted by the source Observable until a `notifier`
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* Observable emits a value.
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*
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* <span class="informal">Lets values pass until a second Observable,
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* `notifier`, emits something. Then, it completes.</span>
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*
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* <img src="./img/takeUntil.png" width="100%">
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*
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* `takeUntil` subscribes and begins mirroring the source Observable. It also
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* monitors a second Observable, `notifier` that you provide. If the `notifier`
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* emits a value or a complete notification, the output Observable stops
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* mirroring the source Observable and completes.
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*
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* @example <caption>Tick every second until the first click happens</caption>
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* var interval = Rx.Observable.interval(1000);
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* var clicks = Rx.Observable.fromEvent(document, 'click');
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* var result = interval.takeUntil(clicks);
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* result.subscribe(x => console.log(x));
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*
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* @see {@link take}
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* @see {@link takeLast}
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* @see {@link takeWhile}
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* @see {@link skip}
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*
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* @param {Observable} notifier The Observable whose first emitted value will
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* cause the output Observable of `takeUntil` to stop emitting values from the
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* source Observable.
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* @return {Observable<T>} An Observable that emits the values from the source
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* Observable until such time as `notifier` emits its first value.
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* @method takeUntil
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* @owner Observable
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*/
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function takeUntil(notifier) {
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return function (source) { return source.lift(new TakeUntilOperator(notifier)); };
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}
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exports.takeUntil = takeUntil;
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var TakeUntilOperator = (function () {
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function TakeUntilOperator(notifier) {
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this.notifier = notifier;
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}
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TakeUntilOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new TakeUntilSubscriber(subscriber, this.notifier));
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};
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return TakeUntilOperator;
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}());
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/**
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* We need this JSDoc comment for affecting ESDoc.
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* @ignore
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* @extends {Ignored}
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*/
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var TakeUntilSubscriber = (function (_super) {
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__extends(TakeUntilSubscriber, _super);
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function TakeUntilSubscriber(destination, notifier) {
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_super.call(this, destination);
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this.notifier = notifier;
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this.add(subscribeToResult_1.subscribeToResult(this, notifier));
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}
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TakeUntilSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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this.complete();
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};
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TakeUntilSubscriber.prototype.notifyComplete = function () {
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// noop
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};
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return TakeUntilSubscriber;
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}(OuterSubscriber_1.OuterSubscriber));
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//# sourceMappingURL=takeUntil.js.map
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