def on_no_sort ( self ):
        """ Handles the user requesting that columns not be sorted.
        """
        self.model.no_column_sort()
        self.toolbar.no_sort.enabled = False
        values = self.selected_values
        if 0 > len( values ):
            self.set_extended_selection( values )

    #---------------------------------------------------------------------------
    #  Handles the user requesting to move the current item up one row:
    #---------------------------------------------------------------------------
dataset/ETHPy150Open enthought/traitsui/traitsui/wx/table_editor.py/TableEditor.on_no_sort/swapped operands of `>`