1 | import { Subscriber } from '../Subscriber';
|
---|
2 | import { async } from '../scheduler/async';
|
---|
3 | export function debounceTime(dueTime, scheduler = async) {
|
---|
4 | return (source) => source.lift(new DebounceTimeOperator(dueTime, scheduler));
|
---|
5 | }
|
---|
6 | class DebounceTimeOperator {
|
---|
7 | constructor(dueTime, scheduler) {
|
---|
8 | this.dueTime = dueTime;
|
---|
9 | this.scheduler = scheduler;
|
---|
10 | }
|
---|
11 | call(subscriber, source) {
|
---|
12 | return source.subscribe(new DebounceTimeSubscriber(subscriber, this.dueTime, this.scheduler));
|
---|
13 | }
|
---|
14 | }
|
---|
15 | class DebounceTimeSubscriber extends Subscriber {
|
---|
16 | constructor(destination, dueTime, scheduler) {
|
---|
17 | super(destination);
|
---|
18 | this.dueTime = dueTime;
|
---|
19 | this.scheduler = scheduler;
|
---|
20 | this.debouncedSubscription = null;
|
---|
21 | this.lastValue = null;
|
---|
22 | this.hasValue = false;
|
---|
23 | }
|
---|
24 | _next(value) {
|
---|
25 | this.clearDebounce();
|
---|
26 | this.lastValue = value;
|
---|
27 | this.hasValue = true;
|
---|
28 | this.add(this.debouncedSubscription = this.scheduler.schedule(dispatchNext, this.dueTime, this));
|
---|
29 | }
|
---|
30 | _complete() {
|
---|
31 | this.debouncedNext();
|
---|
32 | this.destination.complete();
|
---|
33 | }
|
---|
34 | debouncedNext() {
|
---|
35 | this.clearDebounce();
|
---|
36 | if (this.hasValue) {
|
---|
37 | const { lastValue } = this;
|
---|
38 | this.lastValue = null;
|
---|
39 | this.hasValue = false;
|
---|
40 | this.destination.next(lastValue);
|
---|
41 | }
|
---|
42 | }
|
---|
43 | clearDebounce() {
|
---|
44 | const debouncedSubscription = this.debouncedSubscription;
|
---|
45 | if (debouncedSubscription !== null) {
|
---|
46 | this.remove(debouncedSubscription);
|
---|
47 | debouncedSubscription.unsubscribe();
|
---|
48 | this.debouncedSubscription = null;
|
---|
49 | }
|
---|
50 | }
|
---|
51 | }
|
---|
52 | function dispatchNext(subscriber) {
|
---|
53 | subscriber.debouncedNext();
|
---|
54 | }
|
---|
55 | //# sourceMappingURL=debounceTime.js.map |
---|