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package com.intendia.rxgwt2.elemental2;

import elemental2.dom.Event;
import elemental2.dom.EventListener;
import elemental2.dom.EventTarget;
import io.reactivex.Observable;

/**
 * This is a experimental (breaking changes between versions) API to add elemental2 typed events.
 *
 * https://developer.mozilla.org/en-US/docs/Web/Events
 */
public interface RxElemental2 {

    static Observable fromEvent(EventTarget element, String type) {
        return fromEvent(element, type, false);
    }

    static Observable fromEvent(EventTarget source, String type, boolean useCapture) {
        return Observable.create(s -> {
            EventListener listener = s::onNext;
            source.addEventListener(type, listener, useCapture);
            s.setCancellable(() -> source.removeEventListener(type, listener, useCapture));
        });
    }
}