__init__ (
        self,
        master,
        prob_dict,
        keys,
        colors,
        report_func,
        )

change_cursor ( self,  event )

config_bar_height ( self,  prob_dict )

config_handle_pos ( self,  prob_dict )

create_handles ( self )

handle_mouse_move ( self,  event )

handle_mouse_move_end ( self,  event )

handle_mouse_move_start ( self,  event )

info_func ( self,  item )

restore_cursor ( self,  event )

update_bars ( self,  prob_dict )

value_from_handle_coords ( self,  coords )