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- import { Observable } from '../Observable';
- import { Subscriber } from '../Subscriber';
- /**
- * We need this JSDoc comment for affecting ESDoc.
- * @extends {Ignored}
- * @hide true
- */
- export declare class FromEventPatternObservable<T> extends Observable<T> {
- private addHandler;
- private removeHandler;
- private selector;
- /**
- * Creates an Observable from an API based on addHandler/removeHandler
- * functions.
- *
- * <span class="informal">Converts any addHandler/removeHandler API to an
- * Observable.</span>
- *
- * <img src="./img/fromEventPattern.png" width="100%">
- *
- * Creates an Observable by using the `addHandler` and `removeHandler`
- * functions to add and remove the handlers, with an optional selector
- * function to project the event arguments to a result. The `addHandler` is
- * called when the output Observable is subscribed, and `removeHandler` is
- * called when the Subscription is unsubscribed.
- *
- * @example <caption>Emits clicks happening on the DOM document</caption>
- * function addClickHandler(handler) {
- * document.addEventListener('click', handler);
- * }
- *
- * function removeClickHandler(handler) {
- * document.removeEventListener('click', handler);
- * }
- *
- * var clicks = Rx.Observable.fromEventPattern(
- * addClickHandler,
- * removeClickHandler
- * );
- * clicks.subscribe(x => console.log(x));
- *
- * @see {@link from}
- * @see {@link fromEvent}
- *
- * @param {function(handler: Function): any} addHandler A function that takes
- * a `handler` function as argument and attaches it somehow to the actual
- * source of events.
- * @param {function(handler: Function, signal?: any): void} [removeHandler] An optional function that
- * takes a `handler` function as argument and removes it in case it was
- * previously attached using `addHandler`. if addHandler returns signal to teardown when remove,
- * removeHandler function will forward it.
- * @param {function(...args: any): T} [selector] An optional function to
- * post-process results. It takes the arguments from the event handler and
- * should return a single value.
- * @return {Observable<T>}
- * @static true
- * @name fromEventPattern
- * @owner Observable
- */
- static create<T>(addHandler: (handler: Function) => any, removeHandler?: (handler: Function, signal?: any) => void, selector?: (...args: Array<any>) => T): FromEventPatternObservable<T>;
- constructor(addHandler: (handler: Function) => any, removeHandler?: (handler: Function, signal?: any) => void, selector?: (...args: Array<any>) => T);
- /** @deprecated internal use only */ _subscribe(subscriber: Subscriber<T>): void;
- private _callSelector(subscriber, args);
- private _callAddHandler(handler, errorSubscriber);
- }
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