| 1 | import { Subject } from '../Subject';
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| 2 | import { OuterSubscriber } from '../OuterSubscriber';
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| 3 | import { subscribeToResult } from '../util/subscribeToResult';
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| 4 | export function windowWhen(closingSelector) {
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| 5 | return function windowWhenOperatorFunction(source) {
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| 6 | return source.lift(new WindowOperator(closingSelector));
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| 7 | };
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| 8 | }
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| 9 | class WindowOperator {
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| 10 | constructor(closingSelector) {
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| 11 | this.closingSelector = closingSelector;
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| 12 | }
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| 13 | call(subscriber, source) {
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| 14 | return source.subscribe(new WindowSubscriber(subscriber, this.closingSelector));
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| 15 | }
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| 16 | }
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| 17 | class WindowSubscriber extends OuterSubscriber {
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| 18 | constructor(destination, closingSelector) {
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| 19 | super(destination);
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| 20 | this.destination = destination;
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| 21 | this.closingSelector = closingSelector;
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| 22 | this.openWindow();
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| 23 | }
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| 24 | notifyNext(_outerValue, _innerValue, _outerIndex, _innerIndex, innerSub) {
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| 25 | this.openWindow(innerSub);
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| 26 | }
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| 27 | notifyError(error) {
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| 28 | this._error(error);
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| 29 | }
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| 30 | notifyComplete(innerSub) {
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| 31 | this.openWindow(innerSub);
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| 32 | }
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| 33 | _next(value) {
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| 34 | this.window.next(value);
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| 35 | }
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| 36 | _error(err) {
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| 37 | this.window.error(err);
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| 38 | this.destination.error(err);
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| 39 | this.unsubscribeClosingNotification();
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| 40 | }
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| 41 | _complete() {
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| 42 | this.window.complete();
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| 43 | this.destination.complete();
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| 44 | this.unsubscribeClosingNotification();
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| 45 | }
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| 46 | unsubscribeClosingNotification() {
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| 47 | if (this.closingNotification) {
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| 48 | this.closingNotification.unsubscribe();
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| 49 | }
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| 50 | }
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| 51 | openWindow(innerSub = null) {
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| 52 | if (innerSub) {
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| 53 | this.remove(innerSub);
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| 54 | innerSub.unsubscribe();
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| 55 | }
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| 56 | const prevWindow = this.window;
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| 57 | if (prevWindow) {
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| 58 | prevWindow.complete();
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| 59 | }
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| 60 | const window = this.window = new Subject();
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| 61 | this.destination.next(window);
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| 62 | let closingNotifier;
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| 63 | try {
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| 64 | const { closingSelector } = this;
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| 65 | closingNotifier = closingSelector();
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| 66 | }
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| 67 | catch (e) {
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| 68 | this.destination.error(e);
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| 69 | this.window.error(e);
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| 70 | return;
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| 71 | }
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| 72 | this.add(this.closingNotification = subscribeToResult(this, closingNotifier));
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| 73 | }
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| 74 | }
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| 75 | //# sourceMappingURL=windowWhen.js.map |
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