#!/usr/bin/python
''' handle gui button related commands.'''

import ri_tk as display
import ri_seq
import ri_widget

def quit():
    ''' correspond to quit button '''
    display.quit()

def previous():
    ''' correspond to previous button '''
    wid_name = ri_seq.previous()
    if wid_name is not None:
        if ri_widget.Widget.current_widget:
            ri_widget.Widget.current_widget.hide()

        ri_widget.Widget.dict[wid_name].show()
    else:
        ri_widget.MessageBox.dict["previous"].show()

def next():
    ''' correspond to next button '''
    wid_name = ri_seq.next()
    if wid_name is not None:
        if ri_widget.Widget.current_widget:
            ri_widget.Widget.current_widget.hide()

        ri_widget.Widget.dict[wid_name].show()
    else:
        ri_widget.MessageBox.dict["next"].show()

def serial_no_init():
    display.var_dict['serial_no.number'].set(value='123')

def serial_no_quit():
    v = display.var_dict['serial_no.number'].get()