55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
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import { Subscriber } from '../Subscriber';
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import { async } from '../scheduler/async';
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export function debounceTime(dueTime, scheduler = async) {
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return (source) => source.lift(new DebounceTimeOperator(dueTime, scheduler));
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}
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class DebounceTimeOperator {
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constructor(dueTime, scheduler) {
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this.dueTime = dueTime;
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this.scheduler = scheduler;
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}
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call(subscriber, source) {
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return source.subscribe(new DebounceTimeSubscriber(subscriber, this.dueTime, this.scheduler));
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}
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}
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class DebounceTimeSubscriber extends Subscriber {
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constructor(destination, dueTime, scheduler) {
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super(destination);
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this.dueTime = dueTime;
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this.scheduler = scheduler;
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this.debouncedSubscription = null;
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this.lastValue = null;
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this.hasValue = false;
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}
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_next(value) {
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this.clearDebounce();
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this.lastValue = value;
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this.hasValue = true;
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this.add(this.debouncedSubscription = this.scheduler.schedule(dispatchNext, this.dueTime, this));
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}
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_complete() {
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this.debouncedNext();
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this.destination.complete();
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}
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debouncedNext() {
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this.clearDebounce();
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if (this.hasValue) {
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const { lastValue } = this;
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this.lastValue = null;
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this.hasValue = false;
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this.destination.next(lastValue);
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}
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}
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clearDebounce() {
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const debouncedSubscription = this.debouncedSubscription;
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if (debouncedSubscription !== null) {
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this.remove(debouncedSubscription);
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debouncedSubscription.unsubscribe();
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this.debouncedSubscription = null;
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}
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}
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}
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function dispatchNext(subscriber) {
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subscriber.debouncedNext();
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}
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//# sourceMappingURL=debounceTime.js.map
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