#!/usr/bin/python
''' handle display related work upon Tkinter '''

import Tkinter
import tkMessageBox
def initialize(base_w):
    ''' base_w - base widget instance '''
    global root_window
    root_window = Tkinter.Tk()

    # grid management for root_window
    root_window.columnconfigure(0, weight=1)
    root_window.rowconfigure(0, weight=1)
    root_window.geometry("%sx%s+0+0" %(root_window.winfo_screenwidth(),root_window.winfo_screenheight()))

    global base_widget
    base_widget = display_widget_sub(base_w, root_window)

def quit():
    ''' exit root window '''
    root_window.quit()

def display_widget(w):
    ''' w - widget instance '''
    global current_window
    current_window = display_widget_sub(w, base_widget)

def display_widget_sub(w, p_win):
    ''' 
    w - widget instance
    p_win - Tk parent window '''
    tk_func = getattr(Tkinter, w.tp)
    w_win = tk_func(p_win, w.attr)
    
    # display sub widgets
    if 'widgets' in dir(w):
        for sub_w in w.widgets:
            display_widget_sub(sub_w, w_win)

    # grid management
    if 'grid_management' in dir(w):
        for cf in w.grid_management.cf_list:
            cf_func = getattr(w_win, cf[0])
            cf_func( cf[1], weight=cf[2])

    # grid location
    if 'grid_location' in dir(w):
        w_win.grid(w.grid_location.dict)

    return w_win

def kill_widget(win):
    ''' win - Tk window instance '''
    win.destroy()

#def display_entry(w):

#def display_listbox(w):

#def display_radiobutton(w):

def display_message_box(w):
    ''' display MessageBox
 w - widget instance'''
    disp = getattr(tkMessageBox, "show%s" %(w.tp))
    disp(w.title, w.message)