tweb-i2p/src/helpers/dom/clickEvent.ts

/*
 * https://github.com/morethanwords/tweb
 * Copyright (C) 2019-2021 Eduard Kuzmenko
 * https://github.com/morethanwords/tweb/blob/master/LICENSE
 */

import type ListenerSetter from "../listenerSetter";
import { isTouchSupported } from "../touchSupport";
import simulateEvent from "./dispatchEvent";

export const CLICK_EVENT_NAME: 'mousedown' | 'touchend' | 'click' = (isTouchSupported ? 'mousedown' : 'click') as any;
export type AttachClickOptions = AddEventListenerOptions & Partial<{listenerSetter: ListenerSetter, touchMouseDown: true}>;
export function attachClickEvent(elem: HTMLElement, callback: (e: TouchEvent | MouseEvent) => void, options: AttachClickOptions = {}) {
  const add = options.listenerSetter ? options.listenerSetter.add(elem) : elem.addEventListener.bind(elem);
  // const remove = options.listenerSetter ? options.listenerSetter.removeManual.bind(options.listenerSetter, elem) : elem.removeEventListener.bind(elem);

  options.touchMouseDown = true;
  /* if(options.touchMouseDown && CLICK_EVENT_NAME === 'touchend') {
    add('mousedown', callback, options);
  } else if(CLICK_EVENT_NAME === 'touchend') {
    const o = {...options, once: true};

    const onTouchStart = (e: TouchEvent) => {
      const onTouchMove = (e: TouchEvent) => {
        remove('touchmove', onTouchMove, o);
        remove('touchend', onTouchEnd, o);
      };
  
      const onTouchEnd = (e: TouchEvent) => {
        remove('touchmove', onTouchMove, o);
        callback(e);
        if(options.once) {
          remove('touchstart', onTouchStart);
        }
      };
  
      add('touchend', onTouchEnd, o);
      add('touchmove', onTouchMove, o);
    };

    add('touchstart', onTouchStart);
  } else {
    add(CLICK_EVENT_NAME, callback, options);
  } */
  add(CLICK_EVENT_NAME, callback, options);
}

export function detachClickEvent(elem: HTMLElement, callback: (e: TouchEvent | MouseEvent) => void, options?: AddEventListenerOptions) {
  if(CLICK_EVENT_NAME === 'touchend') {
    elem.removeEventListener('touchstart', callback, options);
  } else {
    elem.removeEventListener(CLICK_EVENT_NAME, callback, options);
  }
}

export function simulateClickEvent(elem: HTMLElement) {
  simulateEvent(elem, CLICK_EVENT_NAME);
}