/**
  * Drag to drag window
  *
  * @param event
  */
 public void handleAppMouseDrag(MouseEvent event) {
   CommonEventHandlers.getInstance().handleAppMouseDrag(event);
 }
 /**
  * Click and Hold to make window draggable
  *
  * @param event
  */
 public void handleAppMouseClick_Hold(MouseEvent event) {
   CommonEventHandlers.getInstance().handleAppMouseClick_Hold(event);
 }