Function handleTouchStart

core/src/utils/gesture/pointer-events.ts:25–49

(ev: any)

  let lastTouchEvent = 0;

  const handleTouchStart = (ev: any) => {
    lastTouchEvent = Date.now() + MOUSE_WAIT;
    if (!pointerDown(ev)) {
      return;
    }
    if (!rmTouchMove && pointerMove) {
      rmTouchMove = addEventListener(el, 'touchmove', pointerMove, options);
    }

    /**
     * Events are dispatched on the element that is tapped and bubble up to
     * the reference element in the gesture. In the event that the element this
     * event was first dispatched on is removed from the DOM, the event will no
     * longer bubble up to our reference element. This leaves the gesture in an
     * unusable state. To account for this, the touchend and touchcancel listeners
     * should be added to the event target so that they still fire even if the target
     * is removed from the DOM.
     */
    if (!rmTouchEnd) {
      rmTouchEnd = addEventListener(ev.target, 'touchend', handleTouchEnd, options);
    }
    if (!rmTouchCancel) {
      rmTouchCancel = addEventListener(ev.target, 'touchcancel', handleTouchEnd, options);
    }
  };

  const handleMouseDown = (ev: any) => {
    if (lastTouchEvent > Date.now()) {