Opal-Estate-Pro/node_modules/rxjs/_esm5/operator/bufferToggle.js
2019-09-13 11:27:52 +07:00

45 lines
1.9 KiB
JavaScript
Executable File

/** PURE_IMPORTS_START .._operators_bufferToggle PURE_IMPORTS_END */
import { bufferToggle as higherOrder } from '../operators/bufferToggle';
/**
* Buffers the source Observable values starting from an emission from
* `openings` and ending when the output of `closingSelector` emits.
*
* <span class="informal">Collects values from the past as an array. Starts
* collecting only when `opening` emits, and calls the `closingSelector`
* function to get an Observable that tells when to close the buffer.</span>
*
* <img src="./img/bufferToggle.png" width="100%">
*
* Buffers values from the source by opening the buffer via signals from an
* Observable provided to `openings`, and closing and sending the buffers when
* a Subscribable or Promise returned by the `closingSelector` function emits.
*
* @example <caption>Every other second, emit the click events from the next 500ms</caption>
* var clicks = Rx.Observable.fromEvent(document, 'click');
* var openings = Rx.Observable.interval(1000);
* var buffered = clicks.bufferToggle(openings, i =>
* i % 2 ? Rx.Observable.interval(500) : Rx.Observable.empty()
* );
* buffered.subscribe(x => console.log(x));
*
* @see {@link buffer}
* @see {@link bufferCount}
* @see {@link bufferTime}
* @see {@link bufferWhen}
* @see {@link windowToggle}
*
* @param {SubscribableOrPromise<O>} openings A Subscribable or Promise of notifications to start new
* buffers.
* @param {function(value: O): SubscribableOrPromise} closingSelector A function that takes
* the value emitted by the `openings` observable and returns a Subscribable or Promise,
* which, when it emits, signals that the associated buffer should be emitted
* and cleared.
* @return {Observable<T[]>} An observable of arrays of buffered values.
* @method bufferToggle
* @owner Observable
*/
export function bufferToggle(openings, closingSelector) {
return higherOrder(openings, closingSelector)(this);
}
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