ui/node_modules/rxjs/dist/esm5/internal/observable/ConnectableObservable.js

import { __extends } from "tslib";
import { Observable } from '../Observable';
import { Subscription } from '../Subscription';
import { refCount as higherOrderRefCount } from '../operators/refCount';
import { createOperatorSubscriber } from '../operators/OperatorSubscriber';
import { hasLift } from '../util/lift';
var ConnectableObservable = (function (_super) {
    __extends(ConnectableObservable, _super);
    function ConnectableObservable(source, subjectFactory) {
        var _this = _super.call(this) || this;
        _this.source = source;
        _this.subjectFactory = subjectFactory;
        _this._subject = null;
        _this._refCount = 0;
        _this._connection = null;
        if (hasLift(source)) {
            _this.lift = source.lift;
        }
        return _this;
    }
    ConnectableObservable.prototype._subscribe = function (subscriber) {
        return this.getSubject().subscribe(subscriber);
    };
    ConnectableObservable.prototype.getSubject = function () {
        var subject = this._subject;
        if (!subject || subject.isStopped) {
            this._subject = this.subjectFactory();
        }
        return this._subject;
    };
    ConnectableObservable.prototype._teardown = function () {
        this._refCount = 0;
        var _connection = this._connection;
        this._subject = this._connection = null;
        _connection === null || _connection === void 0 ? void 0 : _connection.unsubscribe();
    };
    ConnectableObservable.prototype.connect = function () {
        var _this = this;
        var connection = this._connection;
        if (!connection) {
            connection = this._connection = new Subscription();
            var subject_1 = this.getSubject();
            connection.add(this.source.subscribe(createOperatorSubscriber(subject_1, undefined, function () {
                _this._teardown();
                subject_1.complete();
            }, function (err) {
                _this._teardown();
                subject_1.error(err);
            }, function () { return _this._teardown(); })));
            if (connection.closed) {
                this._connection = null;
                connection = Subscription.EMPTY;
            }
        }
        return connection;
    };
    ConnectableObservable.prototype.refCount = function () {
        return higherOrderRefCount()(this);
    };
    return ConnectableObservable;
}(Observable));
export { ConnectableObservable };
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