57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
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import { Observable } from '../Observable';
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import { Subscription } from '../Subscription';
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import { refCount as higherOrderRefCount } from '../operators/refCount';
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import { createOperatorSubscriber } from '../operators/OperatorSubscriber';
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import { hasLift } from '../util/lift';
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export class ConnectableObservable extends Observable {
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constructor(source, subjectFactory) {
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super();
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this.source = source;
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this.subjectFactory = subjectFactory;
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this._subject = null;
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this._refCount = 0;
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this._connection = null;
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if (hasLift(source)) {
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this.lift = source.lift;
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}
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}
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_subscribe(subscriber) {
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return this.getSubject().subscribe(subscriber);
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}
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getSubject() {
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const subject = this._subject;
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if (!subject || subject.isStopped) {
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this._subject = this.subjectFactory();
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}
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return this._subject;
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}
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_teardown() {
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this._refCount = 0;
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const { _connection } = this;
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this._subject = this._connection = null;
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_connection === null || _connection === void 0 ? void 0 : _connection.unsubscribe();
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}
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connect() {
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let connection = this._connection;
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if (!connection) {
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connection = this._connection = new Subscription();
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const subject = this.getSubject();
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connection.add(this.source.subscribe(createOperatorSubscriber(subject, undefined, () => {
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this._teardown();
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subject.complete();
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}, (err) => {
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this._teardown();
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subject.error(err);
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}, () => this._teardown())));
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if (connection.closed) {
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this._connection = null;
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connection = Subscription.EMPTY;
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}
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}
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return connection;
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}
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refCount() {
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return higherOrderRefCount()(this);
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}
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}
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//# sourceMappingURL=ConnectableObservable.js.map
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