75 lines
No EOL
2.2 KiB
JavaScript
75 lines
No EOL
2.2 KiB
JavaScript
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
|