Subject.js
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"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 ObjectUnsubscribedError_1 = require('./util/ObjectUnsubscribedError');
var SubjectSubscription_1 = require('./SubjectSubscription');
var rxSubscriber_1 = require('./symbol/rxSubscriber');
/**
* @class SubjectSubscriber<T>
*/
var SubjectSubscriber = (function (_super) {
__extends(SubjectSubscriber, _super);
function SubjectSubscriber(destination) {
_super.call(this, destination);
this.destination = destination;
}
return SubjectSubscriber;
}(Subscriber_1.Subscriber));
exports.SubjectSubscriber = SubjectSubscriber;
/**
* @class Subject<T>
*/
var Subject = (function (_super) {
__extends(Subject, _super);
function Subject() {
_super.call(this);
this.observers = [];
this.closed = false;
this.isStopped = false;
this.hasError = false;
this.thrownError = null;
}
Subject.prototype[rxSubscriber_1.rxSubscriber] = function () {
return new SubjectSubscriber(this);
};
Subject.prototype.lift = function (operator) {
var subject = new AnonymousSubject(this, this);
subject.operator = operator;
return subject;
};
Subject.prototype.next = function (value) {
if (this.closed) {
throw new ObjectUnsubscribedError_1.ObjectUnsubscribedError();
}
if (!this.isStopped) {
var observers = this.observers;
var len = observers.length;
var copy = observers.slice();
for (var i = 0; i < len; i++) {
copy[i].next(value);
}
}
};
Subject.prototype.error = function (err) {
if (this.closed) {
throw new ObjectUnsubscribedError_1.ObjectUnsubscribedError();
}
this.hasError = true;
this.thrownError = err;
this.isStopped = true;
var observers = this.observers;
var len = observers.length;
var copy = observers.slice();
for (var i = 0; i < len; i++) {
copy[i].error(err);
}
this.observers.length = 0;
};
Subject.prototype.complete = function () {
if (this.closed) {
throw new ObjectUnsubscribedError_1.ObjectUnsubscribedError();
}
this.isStopped = true;
var observers = this.observers;
var len = observers.length;
var copy = observers.slice();
for (var i = 0; i < len; i++) {
copy[i].complete();
}
this.observers.length = 0;
};
Subject.prototype.unsubscribe = function () {
this.isStopped = true;
this.closed = true;
this.observers = null;
};
Subject.prototype._trySubscribe = function (subscriber) {
if (this.closed) {
throw new ObjectUnsubscribedError_1.ObjectUnsubscribedError();
}
else {
return _super.prototype._trySubscribe.call(this, subscriber);
}
};
/** @deprecated internal use only */ Subject.prototype._subscribe = function (subscriber) {
if (this.closed) {
throw new ObjectUnsubscribedError_1.ObjectUnsubscribedError();
}
else if (this.hasError) {
subscriber.error(this.thrownError);
return Subscription_1.Subscription.EMPTY;
}
else if (this.isStopped) {
subscriber.complete();
return Subscription_1.Subscription.EMPTY;
}
else {
this.observers.push(subscriber);
return new SubjectSubscription_1.SubjectSubscription(this, subscriber);
}
};
Subject.prototype.asObservable = function () {
var observable = new Observable_1.Observable();
observable.source = this;
return observable;
};
Subject.create = function (destination, source) {
return new AnonymousSubject(destination, source);
};
return Subject;
}(Observable_1.Observable));
exports.Subject = Subject;
/**
* @class AnonymousSubject<T>
*/
var AnonymousSubject = (function (_super) {
__extends(AnonymousSubject, _super);
function AnonymousSubject(destination, source) {
_super.call(this);
this.destination = destination;
this.source = source;
}
AnonymousSubject.prototype.next = function (value) {
var destination = this.destination;
if (destination && destination.next) {
destination.next(value);
}
};
AnonymousSubject.prototype.error = function (err) {
var destination = this.destination;
if (destination && destination.error) {
this.destination.error(err);
}
};
AnonymousSubject.prototype.complete = function () {
var destination = this.destination;
if (destination && destination.complete) {
this.destination.complete();
}
};
/** @deprecated internal use only */ AnonymousSubject.prototype._subscribe = function (subscriber) {
var source = this.source;
if (source) {
return this.source.subscribe(subscriber);
}
else {
return Subscription_1.Subscription.EMPTY;
}
};
return AnonymousSubject;
}(Subject));
exports.AnonymousSubject = AnonymousSubject;
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