43 lines
1.7 KiB
JavaScript
43 lines
1.7 KiB
JavaScript
|
/** PURE_IMPORTS_START .._operators_window PURE_IMPORTS_END */
|
||
|
|
import { window as higherOrder } from '../operators/window';
|
||
|
|
/**
|
||
|
|
* Branch out the source Observable values as a nested Observable whenever
|
||
|
|
* `windowBoundaries` emits.
|
||
|
|
*
|
||
|
|
* <span class="informal">It's like {@link buffer}, but emits a nested Observable
|
||
|
|
* instead of an array.</span>
|
||
|
|
*
|
||
|
|
* <img src="./img/window.png" width="100%">
|
||
|
|
*
|
||
|
|
* Returns an Observable that emits windows of items it collects from the source
|
||
|
|
* Observable. The output Observable emits connected, non-overlapping
|
||
|
|
* windows. It emits the current window and opens a new one whenever the
|
||
|
|
* Observable `windowBoundaries` emits an item. Because each window is an
|
||
|
|
* Observable, the output is a higher-order Observable.
|
||
|
|
*
|
||
|
|
* @example <caption>In every window of 1 second each, emit at most 2 click events</caption>
|
||
|
|
* var clicks = Rx.Observable.fromEvent(document, 'click');
|
||
|
|
* var interval = Rx.Observable.interval(1000);
|
||
|
|
* var result = clicks.window(interval)
|
||
|
|
* .map(win => win.take(2)) // each window has at most 2 emissions
|
||
|
|
* .mergeAll(); // flatten the Observable-of-Observables
|
||
|
|
* result.subscribe(x => console.log(x));
|
||
|
|
*
|
||
|
|
* @see {@link windowCount}
|
||
|
|
* @see {@link windowTime}
|
||
|
|
* @see {@link windowToggle}
|
||
|
|
* @see {@link windowWhen}
|
||
|
|
* @see {@link buffer}
|
||
|
|
*
|
||
|
|
* @param {Observable<any>} windowBoundaries An Observable that completes the
|
||
|
|
* previous window and starts a new window.
|
||
|
|
* @return {Observable<Observable<T>>} An Observable of windows, which are
|
||
|
|
* Observables emitting values of the source Observable.
|
||
|
|
* @method window
|
||
|
|
* @owner Observable
|
||
|
|
*/
|
||
|
|
export function window(windowBoundaries) {
|
||
|
|
return higherOrder(windowBoundaries)(this);
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=window.js.map
|