#NEWLINE# def notify_width_changed( self ) : #NEWLINE# #INDENT# '\n        Called by a column when its width changes, triggering the graphic\n        frame to recalculate its total width (as the sum of the column\n        widths).\n        ' #NEWLINE# new_table_width = sum ( [ col . width for col in col . columns ] ) #NEWLINE# self . _graphic_frame . width = new_table_width