54 lines
2.0 KiB
JavaScript
54 lines
2.0 KiB
JavaScript
import { Subject } from '../Subject';
|
|
import { Subscription } from '../Subscription';
|
|
import { operate } from '../util/lift';
|
|
import { innerFrom } from '../observable/innerFrom';
|
|
import { createOperatorSubscriber } from './OperatorSubscriber';
|
|
import { noop } from '../util/noop';
|
|
import { arrRemove } from '../util/arrRemove';
|
|
export function windowToggle(openings, closingSelector) {
|
|
return operate((source, subscriber) => {
|
|
const windows = [];
|
|
const handleError = (err) => {
|
|
while (0 < windows.length) {
|
|
windows.shift().error(err);
|
|
}
|
|
subscriber.error(err);
|
|
};
|
|
innerFrom(openings).subscribe(createOperatorSubscriber(subscriber, (openValue) => {
|
|
const window = new Subject();
|
|
windows.push(window);
|
|
const closingSubscription = new Subscription();
|
|
const closeWindow = () => {
|
|
arrRemove(windows, window);
|
|
window.complete();
|
|
closingSubscription.unsubscribe();
|
|
};
|
|
let closingNotifier;
|
|
try {
|
|
closingNotifier = innerFrom(closingSelector(openValue));
|
|
}
|
|
catch (err) {
|
|
handleError(err);
|
|
return;
|
|
}
|
|
subscriber.next(window.asObservable());
|
|
closingSubscription.add(closingNotifier.subscribe(createOperatorSubscriber(subscriber, closeWindow, noop, handleError)));
|
|
}, noop));
|
|
source.subscribe(createOperatorSubscriber(subscriber, (value) => {
|
|
const windowsCopy = windows.slice();
|
|
for (const window of windowsCopy) {
|
|
window.next(value);
|
|
}
|
|
}, () => {
|
|
while (0 < windows.length) {
|
|
windows.shift().complete();
|
|
}
|
|
subscriber.complete();
|
|
}, handleError, () => {
|
|
while (0 < windows.length) {
|
|
windows.shift().unsubscribe();
|
|
}
|
|
}));
|
|
});
|
|
}
|
|
//# sourceMappingURL=windowToggle.js.map
|