factory constructor TouchEvent

Source

factory TouchEvent(TouchList touches, TouchList targetTouches,
    TouchList changedTouches, String type,
    {Window view,
    int screenX: 0,
    int screenY: 0,
    int clientX: 0,
    int clientY: 0,
    bool ctrlKey: false,
    bool altKey: false,
    bool shiftKey: false,
    bool metaKey: false}) {
  if (view == null) {
    view = window;
  }
  TouchEvent e = _blink.BlinkTouchEvent.instance.constructorCallback_1_(type);
  e._initTouchEvent(touches, targetTouches, changedTouches, type, view,
      screenX, screenY, clientX, clientY, ctrlKey, altKey, shiftKey, metaKey);
  return e;
}