work.suroh.tk/node_modules/rxjs/_esm5/operators/takeUntil.js

77 lines
2.9 KiB
JavaScript
Raw Normal View History

2019-12-02 12:22:45 +00:00
/** PURE_IMPORTS_START .._OuterSubscriber,.._util_subscribeToResult PURE_IMPORTS_END */
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b)
if (b.hasOwnProperty(p))
d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
import { OuterSubscriber } from '../OuterSubscriber';
import { subscribeToResult } from '../util/subscribeToResult';
/**
* Emits the values emitted by the source Observable until a `notifier`
* Observable emits a value.
*
* <span class="informal">Lets values pass until a second Observable,
* `notifier`, emits something. Then, it completes.</span>
*
* <img src="./img/takeUntil.png" width="100%">
*
* `takeUntil` subscribes and begins mirroring the source Observable. It also
* monitors a second Observable, `notifier` that you provide. If the `notifier`
* emits a value or a complete notification, the output Observable stops
* mirroring the source Observable and completes.
*
* @example <caption>Tick every second until the first click happens</caption>
* var interval = Rx.Observable.interval(1000);
* var clicks = Rx.Observable.fromEvent(document, 'click');
* var result = interval.takeUntil(clicks);
* result.subscribe(x => console.log(x));
*
* @see {@link take}
* @see {@link takeLast}
* @see {@link takeWhile}
* @see {@link skip}
*
* @param {Observable} notifier The Observable whose first emitted value will
* cause the output Observable of `takeUntil` to stop emitting values from the
* source Observable.
* @return {Observable<T>} An Observable that emits the values from the source
* Observable until such time as `notifier` emits its first value.
* @method takeUntil
* @owner Observable
*/
export function takeUntil(notifier) {
return function (source) { return source.lift(new TakeUntilOperator(notifier)); };
}
var TakeUntilOperator = /*@__PURE__*/ (/*@__PURE__*/ function () {
function TakeUntilOperator(notifier) {
this.notifier = notifier;
}
TakeUntilOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new TakeUntilSubscriber(subscriber, this.notifier));
};
return TakeUntilOperator;
}());
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var TakeUntilSubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
__extends(TakeUntilSubscriber, _super);
function TakeUntilSubscriber(destination, notifier) {
_super.call(this, destination);
this.notifier = notifier;
this.add(subscribeToResult(this, notifier));
}
TakeUntilSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
this.complete();
};
TakeUntilSubscriber.prototype.notifyComplete = function () {
// noop
};
return TakeUntilSubscriber;
}(OuterSubscriber));
//# sourceMappingURL=takeUntil.js.map