"use strict";
var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Observable_1 = require('./Observable');
var Subscriber_1 = require('./Subscriber');
var Subscription_1 = require('./Subscription');
var SubjectSubscription_1 = require('./SubjectSubscription');
var rxSubscriber_1 = require('./symbol/rxSubscriber');
var throwError_1 = require('./util/throwError');
var ObjectUnsubscribedError_1 = require('./util/ObjectUnsubscribedError');
/**
 * @class Subject<T>
 */
var Subject = (function (_super) {
    __extends(Subject, _super);
    function Subject(destination, source) {
        _super.call(this);
        this.destination = destination;
        this.source = source;
        this.observers = [];
        this.isUnsubscribed = false;
        this.isStopped = false;
        this.hasErrored = false;
        this.dispatching = false;
        this.hasCompleted = false;
        this.source = source;
    }
    Subject.prototype.lift = function (operator) {
        var subject = new Subject(this.destination || this, this);
        subject.operator = operator;
        return subject;
    };
    Subject.prototype.add = function (subscription) {
        return Subscription_1.Subscription.prototype.add.call(this, subscription);
    };
    Subject.prototype.remove = function (subscription) {
        Subscription_1.Subscription.prototype.remove.call(this, subscription);
    };
    Subject.prototype.unsubscribe = function () {
        Subscription_1.Subscription.prototype.unsubscribe.call(this);
    };
    Subject.prototype._subscribe = function (subscriber) {
        if (this.source) {
            return this.source.subscribe(subscriber);
        }
        else {
            if (subscriber.isUnsubscribed) {
                return;
            }
            else if (this.hasErrored) {
                return subscriber.error(this.errorValue);
            }
            else if (this.hasCompleted) {
                return subscriber.complete();
            }
            this.throwIfUnsubscribed();
            var subscription = new SubjectSubscription_1.SubjectSubscription(this, subscriber);
            this.observers.push(subscriber);
            return subscription;
        }
    };
    Subject.prototype._unsubscribe = function () {
        this.source = null;
        this.isStopped = true;
        this.observers = null;
        this.destination = null;
    };
    Subject.prototype.next = function (value) {
        this.throwIfUnsubscribed();
        if (this.isStopped) {
            return;
        }
        this.dispatching = true;
        this._next(value);
        this.dispatching = false;
        if (this.hasErrored) {
            this._error(this.errorValue);
        }
        else if (this.hasCompleted) {
            this._complete();
        }
    };
    Subject.prototype.error = function (err) {
        this.throwIfUnsubscribed();
        if (this.isStopped) {
            return;
        }
        this.isStopped = true;
        this.hasErrored = true;
        this.errorValue = err;
        if (this.dispatching) {
            return;
        }
        this._error(err);
    };
    Subject.prototype.complete = function () {
        this.throwIfUnsubscribed();
        if (this.isStopped) {
            return;
        }
        this.isStopped = true;
        this.hasCompleted = true;
        if (this.dispatching) {
            return;
        }
        this._complete();
    };
    Subject.prototype.asObservable = function () {
        var observable = new SubjectObservable(this);
        return observable;
    };
    Subject.prototype._next = function (value) {
        if (this.destination) {
            this.destination.next(value);
        }
        else {
            this._finalNext(value);
        }
    };
    Subject.prototype._finalNext = function (value) {
        var index = -1;
        var observers = this.observers.slice(0);
        var len = observers.length;
        while (++index < len) {
            observers[index].next(value);
        }
    };
    Subject.prototype._error = function (err) {
        if (this.destination) {
            this.destination.error(err);
        }
        else {
            this._finalError(err);
        }
    };
    Subject.prototype._finalError = function (err) {
        var index = -1;
        var observers = this.observers;
        // optimization to block our SubjectSubscriptions from
        // splicing themselves out of the observers list one by one.
        this.observers = null;
        this.isUnsubscribed = true;
        if (observers) {
            var len = observers.length;
            while (++index < len) {
                observers[index].error(err);
            }
        }
        this.isUnsubscribed = false;
        this.unsubscribe();
    };
    Subject.prototype._complete = function () {
        if (this.destination) {
            this.destination.complete();
        }
        else {
            this._finalComplete();
        }
    };
    Subject.prototype._finalComplete = function () {
        var index = -1;
        var observers = this.observers;
        // optimization to block our SubjectSubscriptions from
        // splicing themselves out of the observers list one by one.
        this.observers = null;
        this.isUnsubscribed = true;
        if (observers) {
            var len = observers.length;
            while (++index < len) {
                observers[index].complete();
            }
        }
        this.isUnsubscribed = false;
        this.unsubscribe();
    };
    Subject.prototype.throwIfUnsubscribed = function () {
        if (this.isUnsubscribed) {
            throwError_1.throwError(new ObjectUnsubscribedError_1.ObjectUnsubscribedError());
        }
    };
    Subject.prototype[rxSubscriber_1.$$rxSubscriber] = function () {
        return new Subscriber_1.Subscriber(this);
    };
    Subject.create = function (destination, source) {
        return new Subject(destination, source);
    };
    return Subject;
}(Observable_1.Observable));
exports.Subject = Subject;
/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
var SubjectObservable = (function (_super) {
    __extends(SubjectObservable, _super);
    function SubjectObservable(source) {
        _super.call(this);
        this.source = source;
    }
    return SubjectObservable;
}(Observable_1.Observable));
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