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import { IScheduler } from '../Scheduler'; import { Observable } from '../Observable'; import { OperatorFunction } from '../interfaces'; /** * Branch out the source Observable values as a nested Observable periodically * in time. * * <span class="informal">It's like {@link bufferTime}, but emits a nested * Observable instead of an array.</span> * * <img src="./img/windowTime.png" width="100%"> * * Returns an Observable that emits windows of items it collects from the source * Observable. The output Observable starts a new window periodically, as * determined by the `windowCreationInterval` argument. It emits each window * after a fixed timespan, specified by the `windowTimeSpan` argument. When the * source Observable completes or encounters an error, the output Observable * emits the current window and propagates the notification from the source * Observable. If `windowCreationInterval` is not provided, the output * Observable starts a new window when the previous window of duration * `windowTimeSpan` completes. If `maxWindowCount` is provided, each window * will emit at most fixed number of values. Window will complete immediately * after emitting last value and next one still will open as specified by * `windowTimeSpan` and `windowCreationInterval` arguments. * * @example <caption>In every window of 1 second each, emit at most 2 click events</caption> * var clicks = Rx.Observable.fromEvent(document, 'click'); * var result = clicks.windowTime(1000) * .map(win => win.take(2)) // each window has at most 2 emissions * .mergeAll(); // flatten the Observable-of-Observables * result.subscribe(x => console.log(x)); * * @example <caption>Every 5 seconds start a window 1 second long, and emit at most 2 click events per window</caption> * var clicks = Rx.Observable.fromEvent(document, 'click'); * var result = clicks.windowTime(1000, 5000) * .map(win => win.take(2)) // each window has at most 2 emissions * .mergeAll(); // flatten the Observable-of-Observables * result.subscribe(x => console.log(x)); * * @example <caption>Same as example above but with maxWindowCount instead of take</caption> * var clicks = Rx.Observable.fromEvent(document, 'click'); * var result = clicks.windowTime(1000, 5000, 2) // each window has still at most 2 emissions * .mergeAll(); // flatten the Observable-of-Observables * result.subscribe(x => console.log(x)); * @see {@link window} * @see {@link windowCount} * @see {@link windowToggle} * @see {@link windowWhen} * @see {@link bufferTime} * * @param {number} windowTimeSpan The amount of time to fill each window. * @param {number} [windowCreationInterval] The interval at which to start new * windows. * @param {number} [maxWindowSize=Number.POSITIVE_INFINITY] Max number of * values each window can emit before completion. * @param {Scheduler} [scheduler=async] The scheduler on which to schedule the * intervals that determine window boundaries. * @return {Observable<Observable<T>>} An observable of windows, which in turn * are Observables. * @method windowTime * @owner Observable */ export declare function windowTime<T>(windowTimeSpan: number, scheduler?: IScheduler): OperatorFunction<T, Observable<T>>; export declare function windowTime<T>(windowTimeSpan: number, windowCreationInterval: number, scheduler?: IScheduler): OperatorFunction<T, Observable<T>>; export declare function windowTime<T>(windowTimeSpan: number, windowCreationInterval: number, maxWindowSize: number, scheduler?: IScheduler): OperatorFunction<T, Observable<T>>;