'use strict';
exports.__esModule = true;
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { Iif (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
function _inherits(subClass, superClass) { Iif (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); Eif (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var _Subject2 = require('../Subject');
var _Subject3 = _interopRequireDefault(_Subject2);
var _schedulersImmediate = require('../schedulers/immediate');
var _schedulersImmediate2 = _interopRequireDefault(_schedulersImmediate);
var ReplaySubject = (function (_Subject) {
_inherits(ReplaySubject, _Subject);
function ReplaySubject(bufferSize, _windowTime, scheduler) {
if (bufferSize === undefined) bufferSize = Number.POSITIVE_INFINITY;
if (_windowTime === undefined) _windowTime = Number.POSITIVE_INFINITY;
_classCallCheck(this, ReplaySubject);
_Subject.call(this);
this.events = [];
this.bufferSize = bufferSize < 1 ? 1 : bufferSize;
this._windowTime = _windowTime < 1 ? 1 : _windowTime;
this.scheduler = scheduler;
}
ReplaySubject.prototype._next = function _next(value) {
var now = this._getNow();
this.events.push(new ReplayEvent(now, value));
_Subject.prototype._next.call(this, value);
};
ReplaySubject.prototype._subscribe = function _subscribe(subscriber) {
var events = this._getEvents(this._getNow());
var index = -1;
var len = events.length;
while (!subscriber.isUnsubscribed && ++index < len) {
subscriber.next(events[index].value);
}
return _Subject.prototype._subscribe.call(this, subscriber);
};
ReplaySubject.prototype._getNow = function _getNow() {
return (this.scheduler || _schedulersImmediate2['default']).now();
};
ReplaySubject.prototype._getEvents = function _getEvents(now) {
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) {
Eif (now - events[spliceCount].time < _windowTime) {
break;
}
spliceCount += 1;
}
if (eventsCount > bufferSize) {
spliceCount = Math.max(spliceCount, eventsCount - bufferSize);
}
if (spliceCount > 0) {
events.splice(0, spliceCount);
}
return events;
};
return ReplaySubject;
})(_Subject3['default']);
exports['default'] = ReplaySubject;
var ReplayEvent = function ReplayEvent(time, value) {
_classCallCheck(this, ReplayEvent);
this.time = time;
this.value = value;
};
module.exports = exports['default']; |