import { Subject } from '../Subject'; import { OuterSubscriber } from '../OuterSubscriber'; import { subscribeToResult } from '../util/subscribeToResult'; export function windowWhen(closingSelector) { return function windowWhenOperatorFunction(source) { return source.lift(new WindowOperator(closingSelector)); }; } class WindowOperator { constructor(closingSelector) { this.closingSelector = closingSelector; } call(subscriber, source) { return source.subscribe(new WindowSubscriber(subscriber, this.closingSelector)); } } class WindowSubscriber extends OuterSubscriber { constructor(destination, closingSelector) { super(destination); this.destination = destination; this.closingSelector = closingSelector; this.openWindow(); } notifyNext(_outerValue, _innerValue, _outerIndex, _innerIndex, innerSub) { this.openWindow(innerSub); } notifyError(error) { this._error(error); } notifyComplete(innerSub) { this.openWindow(innerSub); } _next(value) { this.window.next(value); } _error(err) { this.window.error(err); this.destination.error(err); this.unsubscribeClosingNotification(); } _complete() { this.window.complete(); this.destination.complete(); this.unsubscribeClosingNotification(); } unsubscribeClosingNotification() { if (this.closingNotification) { this.closingNotification.unsubscribe(); } } openWindow(innerSub = null) { if (innerSub) { this.remove(innerSub); innerSub.unsubscribe(); } const prevWindow = this.window; if (prevWindow) { prevWindow.complete(); } const window = this.window = new Subject(); this.destination.next(window); let closingNotifier; try { const { closingSelector } = this; closingNotifier = closingSelector(); } catch (e) { this.destination.error(e); this.window.error(e); return; } this.add(this.closingNotification = subscribeToResult(this, closingNotifier)); } } //# sourceMappingURL=windowWhen.js.map