61 lines
1.8 KiB
JavaScript
61 lines
1.8 KiB
JavaScript
|
import { Subject } from '../Subject';
|
||
|
|
import { OuterSubscriber } from '../OuterSubscriber';
|
||
|
|
import { subscribeToResult } from '../util/subscribeToResult';
|
||
|
|
export function window(windowBoundaries) {
|
||
|
|
return function windowOperatorFunction(source) {
|
||
|
|
return source.lift(new WindowOperator(windowBoundaries));
|
||
|
|
};
|
||
|
|
}
|
||
|
|
class WindowOperator {
|
||
|
|
constructor(windowBoundaries) {
|
||
|
|
this.windowBoundaries = windowBoundaries;
|
||
|
|
}
|
||
|
|
call(subscriber, source) {
|
||
|
|
const windowSubscriber = new WindowSubscriber(subscriber);
|
||
|
|
const sourceSubscription = source.subscribe(windowSubscriber);
|
||
|
|
if (!sourceSubscription.closed) {
|
||
|
|
windowSubscriber.add(subscribeToResult(windowSubscriber, this.windowBoundaries));
|
||
|
|
}
|
||
|
|
return sourceSubscription;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
class WindowSubscriber extends OuterSubscriber {
|
||
|
|
constructor(destination) {
|
||
|
|
super(destination);
|
||
|
|
this.window = new Subject();
|
||
|
|
destination.next(this.window);
|
||
|
|
}
|
||
|
|
notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
|
||
|
|
this.openWindow();
|
||
|
|
}
|
||
|
|
notifyError(error, innerSub) {
|
||
|
|
this._error(error);
|
||
|
|
}
|
||
|
|
notifyComplete(innerSub) {
|
||
|
|
this._complete();
|
||
|
|
}
|
||
|
|
_next(value) {
|
||
|
|
this.window.next(value);
|
||
|
|
}
|
||
|
|
_error(err) {
|
||
|
|
this.window.error(err);
|
||
|
|
this.destination.error(err);
|
||
|
|
}
|
||
|
|
_complete() {
|
||
|
|
this.window.complete();
|
||
|
|
this.destination.complete();
|
||
|
|
}
|
||
|
|
_unsubscribe() {
|
||
|
|
this.window = null;
|
||
|
|
}
|
||
|
|
openWindow() {
|
||
|
|
const prevWindow = this.window;
|
||
|
|
if (prevWindow) {
|
||
|
|
prevWindow.complete();
|
||
|
|
}
|
||
|
|
const destination = this.destination;
|
||
|
|
const newWindow = this.window = new Subject();
|
||
|
|
destination.next(newWindow);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=window.js.map
|