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