work.suroh.tk/node_modules/rxjs/ReplaySubject.js

102 lines
3.8 KiB
JavaScript

"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 Subject_1 = require('./Subject');
var queue_1 = require('./scheduler/queue');
var Subscription_1 = require('./Subscription');
var observeOn_1 = require('./operators/observeOn');
var ObjectUnsubscribedError_1 = require('./util/ObjectUnsubscribedError');
var SubjectSubscription_1 = require('./SubjectSubscription');
/**
* @class ReplaySubject<T>
*/
var ReplaySubject = (function (_super) {
__extends(ReplaySubject, _super);
function ReplaySubject(bufferSize, windowTime, scheduler) {
if (bufferSize === void 0) { bufferSize = Number.POSITIVE_INFINITY; }
if (windowTime === void 0) { windowTime = Number.POSITIVE_INFINITY; }
_super.call(this);
this.scheduler = scheduler;
this._events = [];
this._bufferSize = bufferSize < 1 ? 1 : bufferSize;
this._windowTime = windowTime < 1 ? 1 : windowTime;
}
ReplaySubject.prototype.next = function (value) {
var now = this._getNow();
this._events.push(new ReplayEvent(now, value));
this._trimBufferThenGetEvents();
_super.prototype.next.call(this, value);
};
/** @deprecated internal use only */ ReplaySubject.prototype._subscribe = function (subscriber) {
var _events = this._trimBufferThenGetEvents();
var scheduler = this.scheduler;
var subscription;
if (this.closed) {
throw new ObjectUnsubscribedError_1.ObjectUnsubscribedError();
}
else if (this.hasError) {
subscription = Subscription_1.Subscription.EMPTY;
}
else if (this.isStopped) {
subscription = Subscription_1.Subscription.EMPTY;
}
else {
this.observers.push(subscriber);
subscription = new SubjectSubscription_1.SubjectSubscription(this, subscriber);
}
if (scheduler) {
subscriber.add(subscriber = new observeOn_1.ObserveOnSubscriber(subscriber, scheduler));
}
var len = _events.length;
for (var i = 0; i < len && !subscriber.closed; i++) {
subscriber.next(_events[i].value);
}
if (this.hasError) {
subscriber.error(this.thrownError);
}
else if (this.isStopped) {
subscriber.complete();
}
return subscription;
};
ReplaySubject.prototype._getNow = function () {
return (this.scheduler || queue_1.queue).now();
};
ReplaySubject.prototype._trimBufferThenGetEvents = function () {
var now = this._getNow();
var _bufferSize = this._bufferSize;
var _windowTime = this._windowTime;
var _events = this._events;
var eventsCount = _events.length;
var spliceCount = 0;
// Trim events that fall out of the time window.
// Start at the front of the list. Break early once
// we encounter an event that falls within the window.
while (spliceCount < eventsCount) {
if ((now - _events[spliceCount].time) < _windowTime) {
break;
}
spliceCount++;
}
if (eventsCount > _bufferSize) {
spliceCount = Math.max(spliceCount, eventsCount - _bufferSize);
}
if (spliceCount > 0) {
_events.splice(0, spliceCount);
}
return _events;
};
return ReplaySubject;
}(Subject_1.Subject));
exports.ReplaySubject = ReplaySubject;
var ReplayEvent = (function () {
function ReplayEvent(time, value) {
this.time = time;
this.value = value;
}
return ReplayEvent;
}());
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