| /** PURE_IMPORTS_START .._Subject,.._Subscription,.._util_tryCatch,.._util_errorObject,.._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 { Subscription } from '../Subscription'; |
| import { tryCatch } from '../util/tryCatch'; |
| import { errorObject } from '../util/errorObject'; |
| import { OuterSubscriber } from '../OuterSubscriber'; |
| import { subscribeToResult } from '../util/subscribeToResult'; |
| /** |
| * Branch out the source Observable values as a nested Observable starting from |
| * an emission from `openings` and ending when the output of `closingSelector` |
| * emits. |
| * |
| * <span class="informal">It's like {@link bufferToggle}, but emits a nested |
| * Observable instead of an array.</span> |
| * |
| * <img src="./img/windowToggle.png" width="100%"> |
| * |
| * Returns an Observable that emits windows of items it collects from the source |
| * Observable. The output Observable emits windows that contain those items |
| * emitted by the source Observable between the time when the `openings` |
| * Observable emits an item and when the Observable returned by |
| * `closingSelector` emits an item. |
| * |
| * @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 result = clicks.windowToggle(openings, i => |
| * i % 2 ? Rx.Observable.interval(500) : Rx.Observable.empty() |
| * ).mergeAll(); |
| * result.subscribe(x => console.log(x)); |
| * |
| * @see {@link window} |
| * @see {@link windowCount} |
| * @see {@link windowTime} |
| * @see {@link windowWhen} |
| * @see {@link bufferToggle} |
| * |
| * @param {Observable<O>} openings An observable of notifications to start new |
| * windows. |
| * @param {function(value: O): Observable} closingSelector A function that takes |
| * the value emitted by the `openings` observable and returns an Observable, |
| * which, when it emits (either `next` or `complete`), signals that the |
| * associated window should complete. |
| * @return {Observable<Observable<T>>} An observable of windows, which in turn |
| * are Observables. |
| * @method windowToggle |
| * @owner Observable |
| */ |
| export function windowToggle(openings, closingSelector) { |
| return function (source) { return source.lift(new WindowToggleOperator(openings, closingSelector)); }; |
| } |
| var WindowToggleOperator = /*@__PURE__*/ (/*@__PURE__*/ function () { |
| function WindowToggleOperator(openings, closingSelector) { |
| this.openings = openings; |
| this.closingSelector = closingSelector; |
| } |
| WindowToggleOperator.prototype.call = function (subscriber, source) { |
| return source.subscribe(new WindowToggleSubscriber(subscriber, this.openings, this.closingSelector)); |
| }; |
| return WindowToggleOperator; |
| }()); |
| /** |
| * We need this JSDoc comment for affecting ESDoc. |
| * @ignore |
| * @extends {Ignored} |
| */ |
| var WindowToggleSubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) { |
| __extends(WindowToggleSubscriber, _super); |
| function WindowToggleSubscriber(destination, openings, closingSelector) { |
| _super.call(this, destination); |
| this.openings = openings; |
| this.closingSelector = closingSelector; |
| this.contexts = []; |
| this.add(this.openSubscription = subscribeToResult(this, openings, openings)); |
| } |
| WindowToggleSubscriber.prototype._next = function (value) { |
| var contexts = this.contexts; |
| if (contexts) { |
| var len = contexts.length; |
| for (var i = 0; i < len; i++) { |
| contexts[i].window.next(value); |
| } |
| } |
| }; |
| WindowToggleSubscriber.prototype._error = function (err) { |
| var contexts = this.contexts; |
| this.contexts = null; |
| if (contexts) { |
| var len = contexts.length; |
| var index = -1; |
| while (++index < len) { |
| var context = contexts[index]; |
| context.window.error(err); |
| context.subscription.unsubscribe(); |
| } |
| } |
| _super.prototype._error.call(this, err); |
| }; |
| WindowToggleSubscriber.prototype._complete = function () { |
| var contexts = this.contexts; |
| this.contexts = null; |
| if (contexts) { |
| var len = contexts.length; |
| var index = -1; |
| while (++index < len) { |
| var context = contexts[index]; |
| context.window.complete(); |
| context.subscription.unsubscribe(); |
| } |
| } |
| _super.prototype._complete.call(this); |
| }; |
| WindowToggleSubscriber.prototype._unsubscribe = function () { |
| var contexts = this.contexts; |
| this.contexts = null; |
| if (contexts) { |
| var len = contexts.length; |
| var index = -1; |
| while (++index < len) { |
| var context = contexts[index]; |
| context.window.unsubscribe(); |
| context.subscription.unsubscribe(); |
| } |
| } |
| }; |
| WindowToggleSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) { |
| if (outerValue === this.openings) { |
| var closingSelector = this.closingSelector; |
| var closingNotifier = tryCatch(closingSelector)(innerValue); |
| if (closingNotifier === errorObject) { |
| return this.error(errorObject.e); |
| } |
| else { |
| var window_1 = new Subject(); |
| var subscription = new Subscription(); |
| var context = { window: window_1, subscription: subscription }; |
| this.contexts.push(context); |
| var innerSubscription = subscribeToResult(this, closingNotifier, context); |
| if (innerSubscription.closed) { |
| this.closeWindow(this.contexts.length - 1); |
| } |
| else { |
| innerSubscription.context = context; |
| subscription.add(innerSubscription); |
| } |
| this.destination.next(window_1); |
| } |
| } |
| else { |
| this.closeWindow(this.contexts.indexOf(outerValue)); |
| } |
| }; |
| WindowToggleSubscriber.prototype.notifyError = function (err) { |
| this.error(err); |
| }; |
| WindowToggleSubscriber.prototype.notifyComplete = function (inner) { |
| if (inner !== this.openSubscription) { |
| this.closeWindow(this.contexts.indexOf(inner.context)); |
| } |
| }; |
| WindowToggleSubscriber.prototype.closeWindow = function (index) { |
| if (index === -1) { |
| return; |
| } |
| var contexts = this.contexts; |
| var context = contexts[index]; |
| var window = context.window, subscription = context.subscription; |
| contexts.splice(index, 1); |
| window.complete(); |
| subscription.unsubscribe(); |
| }; |
| return WindowToggleSubscriber; |
| }(OuterSubscriber)); |
| //# sourceMappingURL=windowToggle.js.map |