code: def _get_selected_items(self):
          
          selection = self.get_selection()
          if selection.get_mode() != gtk.SELECTION_MULTIPLE:
              raise AttributeError('selected_items only valid for '
                                   'select_multiple')
          model, selected_paths = selection.get_selected_rows()
          result = []
          for path in selected_paths:
              result.append(model[path][0])
          return result
docs: List of currently selected items