| 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, innerSub) { |
| 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 |