code: def showTabMenu(self, panel, point=None):
          
          if not self._tabMenu:
              self._tabMenu = XViewTabMenu(self)
  
          if point is None:
              point = QtGui.QCursor.pos()
  
          self._tabMenu.setCurrentPanel(panel)
          self._tabMenu.exec_(point)
docs: Creates the panel menu for this view widget.  If no point is supplied,\
          then the current cursor position will be used.
          
          :param      panel   | <XViewPanel>
                      point   | <QPoint> || None