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