mise that resolves once the event has been dispatched.
 */
event.synthesizeWheelAtPoint = function (left, top, event, win) {
  const dpr = win.devicePixelRatio;

  // All delta properties expect the value in device pixels while the
  // WebDriver specification uses CSS pixels.
  // TODO: check if the conversion needs to be done at the platform level
  if (typeof event.deltaX !== "undefined") {
    event.deltaX *= dpr;
  }
  if (typeof event.deltaY !== "undefined") {
    event.deltaY *= dpr;
  }
  if (typeof event.deltaZ !== "undefined") {
    event.deltaZ *= dpr;
  }

  return new Promise(resolve =>
    _getEventUtils(win).synthesizeWheelAtPoint(left, top, event, win, resolve)
  );
};

event.synthesizeMultiTouch = function (opts, win) {
  const modifiers = _getEventUtils(win)._parseModifiers(opts);
  win.windowUtils.sendTouchEvent(
    opts.type,
    opts.id,
    opts.x,
    opts.y,
    opts.rx,
    opts.ry,
    opts.angle,
    opts.force,
    opts.tiltx,
    opts.tilty,
    opts.twist,
    modifiers
  );
};

/**
 * Synthesize a keydown event for a single key.
 *
 * @param {object} key
 *     Key data as returned by keyData.getData
 * @param {Window} win
 *     Window object.
 */
event.sendKeyDown = function (key, win) {
  event.sendSingleKey(key, win, "keydown");
};

/**
 * Synthesize a keyup event for a single key.
 *
 * @param {object} key
 *     Key data as returned by keyData.getData
 * @param {Window} win
 *     Window object.
 */
event.sendKeyUp = function (key, win) {
  event.sendSingleKey(key, win, "keyup");
};

/**
 * Synthesize a key event for a single key.
 *
 * @param {object} key
 *     Key data as returned by keyData.getData
 * @param {Window} win
 *     Window object.
 * @param {string=} type
 *     Event to emit. By default the full keydown/keypressed/keyup event
 *     sequence is emitted.
 */
event.sendSingleKey = function (key, win, type = null) {
  let keyValue = key.key;
  if (!key.printable) {
    keyValue = `KEY_${keyValue}`;
  }
  const event = {
    code: key.code,
    location: key.location,
    altKey: key.altKey ?? false,
    shiftKey: key.shiftKey ?? false,
    ctrlKey: key.ctrlKey ?? false,
    metaKey: key.metaKey ?? false,
    repeat: key.repeat ?? false,
  };
  if (type) {
    event.type = type;
  }
  _getEventUtils(win).synthesizeKey(keyValue, event, win);
};

/**
 * Send a string as a series of keypresses.
 *
 * @param {string} keyString
 *     Sequence of characters to send as key presses
 * @param {Window} win
 *     Window object
 */
event.sendKeys = function (keyString, win) {
  const modifiers = {};
  for (let modifier in event.Modifiers) {
    modifiers[modifier] = false;
  }

  for (let keyValue of keyString) {
    // keyValue will contain enough to represent the UTF-16 encoding of a single abstract character
    // i.e. either a single scalar value, or a surrogate pair
    if (modifiers.shiftKey) {
      keyValue = lazy.keyData.getShiftedKey(keyValue);
    }
    const data = lazy.keyData.getData(keyValue);
    const key = { ...data, ...modifiers };
    if (data.modifier) {
      // Negating the state of the modifier here is not spec compliant but
      // makes us compatible to Chrome's behavior for now. That's fine unless
      // we know the correct behavior.
      //
      // @see: https://github.com/w3c/webdriver/issues/1734
      modifiers[data.modifier] = !modifiers[data.modifier];
    }
    event.sendSingleKey(key, win);
  }
};

event.sendEvent = function (eventType, el, modifiers = {}, opts = {}) {
  opts.canBubble = opts.canBubble || true;

  let doc = el.ownerDocument || el.document;
  let ev = doc.createEvent("Event");

  ev.shiftKey = modifiers.shift;
  ev.metaKey = modifiers.meta;
  ev.altKey = modifiers.alt;
  ev.ctrlKey = modifiers.ctrl;

  ev.initEvent(eventType, opts.canBubble, true);
  el.dispatchEvent(ev);
};

event.mouseover = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("mouseover", el, modifiers, opts);
};

event.mousemove = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("mousemove", el, modifiers, opts);
};

event.mousedown = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("mousedown", el, modifiers, opts);
};

event.mouseup = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("mouseup", el, modifiers, opts);
};

event.cancel = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("cancel", el, modifiers, opts);
};

event.click = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("click", el, modifiers, opts);
};

event.change = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("change", el, modifiers, opts);
};

event.input = function (el, modifiers = {}, opts = {}) {
  return event.sendEvent("input", el, modifiers, opts);
};
PK