code: def enabledModes( self ):
          
          output = 0
          for i, action in enumerate((self.uiDetailsACT,
                                      self.uiCardACT,
                                      self.uiThumbnailACT)):
              if ( action.isEnabled() ):
                  output |= int(math.pow(2, i))
          return output
docs: Returns the binary value of the enabled modes.
          
          :return     <XOrbBrowserWidget.Mode>