61 lines
2.7 KiB
TypeScript
61 lines
2.7 KiB
TypeScript
import { IScheduler } from '../Scheduler';
|
|
import { Observable } from '../Observable';
|
|
import { TeardownLogic } from '../Subscription';
|
|
import { Subscriber } from '../Subscriber';
|
|
/**
|
|
* We need this JSDoc comment for affecting ESDoc.
|
|
* @extends {Ignored}
|
|
* @hide true
|
|
*/
|
|
export declare class TimerObservable extends Observable<number> {
|
|
/**
|
|
* 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
|
|
*/
|
|
static create(initialDelay?: number | Date, period?: number | IScheduler, scheduler?: IScheduler): Observable<number>;
|
|
static dispatch(state: any): any;
|
|
private period;
|
|
private dueTime;
|
|
private scheduler;
|
|
constructor(dueTime?: number | Date, period?: number | IScheduler, scheduler?: IScheduler);
|
|
/** @deprecated internal use only */ _subscribe(subscriber: Subscriber<number>): TeardownLogic;
|
|
}
|