ducha-qianduan/node_modules/rxjs/internal/operators/sampleTime.js

"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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