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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 Subject_1 = require('../Subject');
- var OuterSubscriber_1 = require('../OuterSubscriber');
- var subscribeToResult_1 = require('../util/subscribeToResult');
- /**
- * 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
- */
- function window(windowBoundaries) {
- return function windowOperatorFunction(source) {
- return source.lift(new WindowOperator(windowBoundaries));
- };
- }
- exports.window = window;
- var WindowOperator = (function () {
- function WindowOperator(windowBoundaries) {
- this.windowBoundaries = windowBoundaries;
- }
- WindowOperator.prototype.call = function (subscriber, source) {
- var windowSubscriber = new WindowSubscriber(subscriber);
- var sourceSubscription = source.subscribe(windowSubscriber);
- if (!sourceSubscription.closed) {
- windowSubscriber.add(subscribeToResult_1.subscribeToResult(windowSubscriber, this.windowBoundaries));
- }
- return sourceSubscription;
- };
- return WindowOperator;
- }());
- /**
- * We need this JSDoc comment for affecting ESDoc.
- * @ignore
- * @extends {Ignored}
- */
- var WindowSubscriber = (function (_super) {
- __extends(WindowSubscriber, _super);
- function WindowSubscriber(destination) {
- _super.call(this, destination);
- this.window = new Subject_1.Subject();
- destination.next(this.window);
- }
- WindowSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
- this.openWindow();
- };
- WindowSubscriber.prototype.notifyError = function (error, innerSub) {
- this._error(error);
- };
- WindowSubscriber.prototype.notifyComplete = function (innerSub) {
- this._complete();
- };
- WindowSubscriber.prototype._next = function (value) {
- this.window.next(value);
- };
- WindowSubscriber.prototype._error = function (err) {
- this.window.error(err);
- this.destination.error(err);
- };
- WindowSubscriber.prototype._complete = function () {
- this.window.complete();
- this.destination.complete();
- };
- /** @deprecated internal use only */ WindowSubscriber.prototype._unsubscribe = function () {
- this.window = null;
- };
- WindowSubscriber.prototype.openWindow = function () {
- var prevWindow = this.window;
- if (prevWindow) {
- prevWindow.complete();
- }
- var destination = this.destination;
- var newWindow = this.window = new Subject_1.Subject();
- destination.next(newWindow);
- };
- return WindowSubscriber;
- }(OuterSubscriber_1.OuterSubscriber));
- //# sourceMappingURL=window.js.map
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