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