om/node_modules/rxjs/_esm5/internal/observable/ConnectableObservable.js

/** PURE_IMPORTS_START tslib,_Subject,_Observable,_Subscriber,_Subscription,_operators_refCount PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { SubjectSubscriber } from '../Subject';
import { Observable } from '../Observable';
import { Subscriber } from '../Subscriber';
import { Subscription } from '../Subscription';
import { refCount as higherOrderRefCount } from '../operators/refCount';
var ConnectableObservable = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(ConnectableObservable, _super);
    function ConnectableObservable(source, subjectFactory) {
        var _this = _super.call(this) || this;
        _this.source = source;
        _this.subjectFactory = subjectFactory;
        _this._refCount = 0;
        _this._isComplete = false;
        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.connect = function () {
        var connection = this._connection;
        if (!connection) {
            this._isComplete = false;
            connection = this._connection = new Subscription();
            connection.add(this.source
                .subscribe(new ConnectableSubscriber(this.getSubject(), this)));
            if (connection.closed) {
                this._connection = null;
                connection = Subscription.EMPTY;
            }
            else {
                this._connection = connection;
            }
        }
        return connection;
    };
    ConnectableObservable.prototype.refCount = function () {
        return higherOrderRefCount()(this);
    };
    return ConnectableObservable;
}(Observable));
export { ConnectableObservable };
var connectableProto = ConnectableObservable.prototype;
export var connectableObservableDescriptor = {
    operator: { value: null },
    _refCount: { value: 0, writable: true },
    _subject: { value: null, writable: true },
    _connection: { value: null, writable: true },
    _subscribe: { value: connectableProto._subscribe },
    _isComplete: { value: connectableProto._isComplete, writable: true },
    getSubject: { value: connectableProto.getSubject },
    connect: { value: connectableProto.connect },
    refCount: { value: connectableProto.refCount }
};
var ConnectableSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(ConnectableSubscriber, _super);
    function ConnectableSubscriber(destination, connectable) {
        var _this = _super.call(this, destination) || this;
        _this.connectable = connectable;
        return _this;
    }
    ConnectableSubscriber.prototype._error = function (err) {
        this._unsubscribe();
        _super.prototype._error.call(this, err);
    };
    ConnectableSubscriber.prototype._complete = function () {
        this.connectable._isComplete = true;
        this._unsubscribe();
        _super.prototype._complete.call(this);
    };
    ConnectableSubscriber.prototype._unsubscribe = function () {
        var connectable = this.connectable;
        if (connectable) {
            this.connectable = null;
            var connection = connectable._connection;
            connectable._refCount = 0;
            connectable._subject = null;
            connectable._connection = null;
            if (connection) {
                connection.unsubscribe();
            }
        }
    };
    return ConnectableSubscriber;
}(SubjectSubscriber));
var RefCountOperator = /*@__PURE__*/ (function () {
    function RefCountOperator(connectable) {
        this.connectable = connectable;
    }
    RefCountOperator.prototype.call = function (subscriber, source) {
        var connectable = this.connectable;
        connectable._refCount++;
        var refCounter = new RefCountSubscriber(subscriber, connectable);
        var subscription = source.subscribe(refCounter);
        if (!refCounter.closed) {
            refCounter.connection = connectable.connect();
        }
        return subscription;
    };
    return RefCountOperator;
}());
var RefCountSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(RefCountSubscriber, _super);
    function RefCountSubscriber(destination, connectable) {
        var _this = _super.call(this, destination) || this;
        _this.connectable = connectable;
        return _this;
    }
    RefCountSubscriber.prototype._unsubscribe = function () {
        var connectable = this.connectable;
        if (!connectable) {
            this.connection = null;
            return;
        }
        this.connectable = null;
        var refCount = connectable._refCount;
        if (refCount <= 0) {
            this.connection = null;
            return;
        }
        connectable._refCount = refCount - 1;
        if (refCount > 1) {
            this.connection = null;
            return;
        }
        var connection = this.connection;
        var sharedConnection = connectable._connection;
        this.connection = null;
        if (sharedConnection && (!connection || sharedConnection === connection)) {
            sharedConnection.unsubscribe();
        }
    };
    return RefCountSubscriber;
}(Subscriber));
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