| /** PURE_IMPORTS_START .._Subject,.._OuterSubscriber,.._util_subscribeToResult PURE_IMPORTS_END */ |
| 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 __()); |
| }; |
| import { Subject } from '../Subject'; |
| import { OuterSubscriber } from '../OuterSubscriber'; |
| import { subscribeToResult } from '../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 |
| */ |
| export function window(windowBoundaries) { |
| return function windowOperatorFunction(source) { |
| return source.lift(new WindowOperator(windowBoundaries)); |
| }; |
| } |
| var WindowOperator = /*@__PURE__*/ (/*@__PURE__*/ 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(windowSubscriber, this.windowBoundaries)); |
| } |
| return sourceSubscription; |
| }; |
| return WindowOperator; |
| }()); |
| /** |
| * We need this JSDoc comment for affecting ESDoc. |
| * @ignore |
| * @extends {Ignored} |
| */ |
| var WindowSubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) { |
| __extends(WindowSubscriber, _super); |
| function WindowSubscriber(destination) { |
| _super.call(this, destination); |
| this.window = new 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(); |
| }; |
| 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(); |
| destination.next(newWindow); |
| }; |
| return WindowSubscriber; |
| }(OuterSubscriber)); |
| //# sourceMappingURL=window.js.map |