sampleTime.js
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"use strict";
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
}
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
var Subscriber_1 = require("../Subscriber");
var async_1 = require("../scheduler/async");
function sampleTime(period, scheduler) {
if (scheduler === void 0) { scheduler = async_1.async; }
return function (source) { return source.lift(new SampleTimeOperator(period, scheduler)); };
}
exports.sampleTime = sampleTime;
var SampleTimeOperator = (function () {
function SampleTimeOperator(period, scheduler) {
this.period = period;
this.scheduler = scheduler;
}
SampleTimeOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new SampleTimeSubscriber(subscriber, this.period, this.scheduler));
};
return SampleTimeOperator;
}());
var SampleTimeSubscriber = (function (_super) {
__extends(SampleTimeSubscriber, _super);
function SampleTimeSubscriber(destination, period, scheduler) {
var _this = _super.call(this, destination) || this;
_this.period = period;
_this.scheduler = scheduler;
_this.hasValue = false;
_this.add(scheduler.schedule(dispatchNotification, period, { subscriber: _this, period: period }));
return _this;
}
SampleTimeSubscriber.prototype._next = function (value) {
this.lastValue = value;
this.hasValue = true;
};
SampleTimeSubscriber.prototype.notifyNext = function () {
if (this.hasValue) {
this.hasValue = false;
this.destination.next(this.lastValue);
}
};
return SampleTimeSubscriber;
}(Subscriber_1.Subscriber));
function dispatchNotification(state) {
var subscriber = state.subscriber, period = state.period;
subscriber.notifyNext();
this.schedule(state, period);
}
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