70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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export function debounce(durationSelector) {
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return (source) => source.lift(new DebounceOperator(durationSelector));
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}
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class DebounceOperator {
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constructor(durationSelector) {
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this.durationSelector = durationSelector;
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}
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call(subscriber, source) {
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return source.subscribe(new DebounceSubscriber(subscriber, this.durationSelector));
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}
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}
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class DebounceSubscriber extends OuterSubscriber {
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constructor(destination, durationSelector) {
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super(destination);
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this.durationSelector = durationSelector;
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this.hasValue = false;
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this.durationSubscription = null;
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}
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_next(value) {
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try {
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const result = this.durationSelector.call(this, value);
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if (result) {
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this._tryNext(value, result);
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}
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}
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catch (err) {
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this.destination.error(err);
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}
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}
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_complete() {
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this.emitValue();
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this.destination.complete();
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}
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_tryNext(value, duration) {
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let subscription = this.durationSubscription;
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this.value = value;
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this.hasValue = true;
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if (subscription) {
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subscription.unsubscribe();
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this.remove(subscription);
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}
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subscription = subscribeToResult(this, duration);
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if (subscription && !subscription.closed) {
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this.add(this.durationSubscription = subscription);
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}
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}
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notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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this.emitValue();
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}
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notifyComplete() {
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this.emitValue();
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}
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emitValue() {
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if (this.hasValue) {
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const value = this.value;
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const subscription = this.durationSubscription;
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if (subscription) {
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this.durationSubscription = null;
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subscription.unsubscribe();
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this.remove(subscription);
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}
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this.value = null;
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this.hasValue = false;
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super._next(value);
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}
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}
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}
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//# sourceMappingURL=debounce.js.map
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