76 lines
2.2 KiB
JavaScript
76 lines
2.2 KiB
JavaScript
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import { Subscription } from '../Subscription';
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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export function bufferWhen(closingSelector) {
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return function (source) {
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return source.lift(new BufferWhenOperator(closingSelector));
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};
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}
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class BufferWhenOperator {
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constructor(closingSelector) {
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this.closingSelector = closingSelector;
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}
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call(subscriber, source) {
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return source.subscribe(new BufferWhenSubscriber(subscriber, this.closingSelector));
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}
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}
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class BufferWhenSubscriber extends OuterSubscriber {
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constructor(destination, closingSelector) {
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super(destination);
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this.closingSelector = closingSelector;
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this.subscribing = false;
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this.openBuffer();
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}
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_next(value) {
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this.buffer.push(value);
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}
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_complete() {
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const buffer = this.buffer;
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if (buffer) {
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this.destination.next(buffer);
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}
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super._complete();
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}
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_unsubscribe() {
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this.buffer = null;
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this.subscribing = false;
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}
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notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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this.openBuffer();
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}
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notifyComplete() {
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if (this.subscribing) {
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this.complete();
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}
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else {
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this.openBuffer();
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}
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}
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openBuffer() {
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let { closingSubscription } = this;
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if (closingSubscription) {
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this.remove(closingSubscription);
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closingSubscription.unsubscribe();
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}
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const buffer = this.buffer;
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if (this.buffer) {
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this.destination.next(buffer);
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}
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this.buffer = [];
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let closingNotifier;
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try {
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const { closingSelector } = this;
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closingNotifier = closingSelector();
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}
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catch (err) {
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return this.error(err);
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}
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closingSubscription = new Subscription();
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this.closingSubscription = closingSubscription;
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this.add(closingSubscription);
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this.subscribing = true;
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closingSubscription.add(subscribeToResult(this, closingNotifier));
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this.subscribing = false;
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}
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}
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//# sourceMappingURL=bufferWhen.js.map
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