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 = document._createEvent("TouchEvent");
  e._initTouchEvent(touches, targetTouches, changedTouches, type, view,
      screenX, screenY, clientX, clientY, ctrlKey, altKey, shiftKey, metaKey);
  return e;
}