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- "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 isNumeric_1 = require('../util/isNumeric');
- var Observable_1 = require('../Observable');
- var async_1 = require('../scheduler/async');
- var isScheduler_1 = require('../util/isScheduler');
- var isDate_1 = require('../util/isDate');
- /**
- * We need this JSDoc comment for affecting ESDoc.
- * @extends {Ignored}
- * @hide true
- */
- var TimerObservable = (function (_super) {
- __extends(TimerObservable, _super);
- function TimerObservable(dueTime, period, scheduler) {
- if (dueTime === void 0) { dueTime = 0; }
- _super.call(this);
- this.period = -1;
- this.dueTime = 0;
- if (isNumeric_1.isNumeric(period)) {
- this.period = Number(period) < 1 && 1 || Number(period);
- }
- else if (isScheduler_1.isScheduler(period)) {
- scheduler = period;
- }
- if (!isScheduler_1.isScheduler(scheduler)) {
- scheduler = async_1.async;
- }
- this.scheduler = scheduler;
- this.dueTime = isDate_1.isDate(dueTime) ?
- (+dueTime - this.scheduler.now()) :
- dueTime;
- }
- /**
- * Creates an Observable that starts emitting after an `initialDelay` and
- * emits ever increasing numbers after each `period` of time thereafter.
- *
- * <span class="informal">Its like {@link interval}, but you can specify when
- * should the emissions start.</span>
- *
- * <img src="./img/timer.png" width="100%">
- *
- * `timer` returns an Observable that emits an infinite sequence of ascending
- * integers, with a constant interval of time, `period` of your choosing
- * between those emissions. The first emission happens after the specified
- * `initialDelay`. The initial delay may be a {@link Date}. By default, this
- * operator uses the `async` IScheduler to provide a notion of time, but you
- * may pass any IScheduler to it. If `period` is not specified, the output
- * Observable emits only one value, `0`. Otherwise, it emits an infinite
- * sequence.
- *
- * @example <caption>Emits ascending numbers, one every second (1000ms), starting after 3 seconds</caption>
- * var numbers = Rx.Observable.timer(3000, 1000);
- * numbers.subscribe(x => console.log(x));
- *
- * @example <caption>Emits one number after five seconds</caption>
- * var numbers = Rx.Observable.timer(5000);
- * numbers.subscribe(x => console.log(x));
- *
- * @see {@link interval}
- * @see {@link delay}
- *
- * @param {number|Date} initialDelay The initial delay time to wait before
- * emitting the first value of `0`.
- * @param {number} [period] The period of time between emissions of the
- * subsequent numbers.
- * @param {Scheduler} [scheduler=async] The IScheduler to use for scheduling
- * the emission of values, and providing a notion of "time".
- * @return {Observable} An Observable that emits a `0` after the
- * `initialDelay` and ever increasing numbers after each `period` of time
- * thereafter.
- * @static true
- * @name timer
- * @owner Observable
- */
- TimerObservable.create = function (initialDelay, period, scheduler) {
- if (initialDelay === void 0) { initialDelay = 0; }
- return new TimerObservable(initialDelay, period, scheduler);
- };
- TimerObservable.dispatch = function (state) {
- var index = state.index, period = state.period, subscriber = state.subscriber;
- var action = this;
- subscriber.next(index);
- if (subscriber.closed) {
- return;
- }
- else if (period === -1) {
- return subscriber.complete();
- }
- state.index = index + 1;
- action.schedule(state, period);
- };
- /** @deprecated internal use only */ TimerObservable.prototype._subscribe = function (subscriber) {
- var index = 0;
- var _a = this, period = _a.period, dueTime = _a.dueTime, scheduler = _a.scheduler;
- return scheduler.schedule(TimerObservable.dispatch, dueTime, {
- index: index, period: period, subscriber: subscriber
- });
- };
- return TimerObservable;
- }(Observable_1.Observable));
- exports.TimerObservable = TimerObservable;
- //# sourceMappingURL=TimerObservable.js.map
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