61 lines
1.8 KiB
JavaScript
61 lines
1.8 KiB
JavaScript
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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/**
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* Returns an Observable that skips items emitted by the source Observable until a second Observable emits an item.
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*
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* <img src="./img/skipUntil.png" width="100%">
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*
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* @param {Observable} notifier - The second Observable that has to emit an item before the source Observable's elements begin to
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* be mirrored by the resulting Observable.
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* @return {Observable<T>} An Observable that skips items from the source Observable until the second Observable emits
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* an item, then emits the remaining items.
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* @method skipUntil
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* @owner Observable
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*/
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export function skipUntil(notifier) {
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return (source) => source.lift(new SkipUntilOperator(notifier));
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}
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class SkipUntilOperator {
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constructor(notifier) {
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this.notifier = notifier;
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}
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call(subscriber, source) {
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return source.subscribe(new SkipUntilSubscriber(subscriber, this.notifier));
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}
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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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class SkipUntilSubscriber extends OuterSubscriber {
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constructor(destination, notifier) {
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super(destination);
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this.hasValue = false;
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this.isInnerStopped = false;
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this.add(subscribeToResult(this, notifier));
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}
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_next(value) {
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if (this.hasValue) {
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super._next(value);
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}
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}
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_complete() {
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if (this.isInnerStopped) {
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super._complete();
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}
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else {
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this.unsubscribe();
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}
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}
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notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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this.hasValue = true;
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}
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notifyComplete() {
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this.isInnerStopped = true;
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if (this.isStopped) {
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super._complete();
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}
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}
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}
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//# sourceMappingURL=skipUntil.js.map
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