docs: def dragMoveEvent( self, event ):
          """
          Handles the drag move event.
          
          :param      event | <QDragEvent>
          """
          tags = nativestring(event.mimeData().text())
          
          if ( event.source() == self ):
              event.acceptProposedAction()
          elif ( tags ):
              event.acceptProposedAction()
          else:
              super(XMultiTagEdit, self).dragMoveEvent(event)