Lib/lib-tk/tkCommonDialog.py

   1 #
   2 # Instant Python
   3 # $Id$
   4 #
   5 # base class for tk common dialogues
   6 #
   7 # this module provides a base class for accessing the common
   8 # dialogues available in Tk 4.2 and newer.  use tkFileDialog,
   9 # tkColorChooser, and tkMessageBox to access the individual
  10 # dialogs.
  11 #
  12 # written by Fredrik Lundh, May 1997
  13 #
  14
  15 from Tkinter import *
  16 import os
  17
  18 class Dialog:
  19
  20     command  = None
  21
  22     def __init__(self, master=None, **options):
  23
  24         # FIXME: should this be placed on the module level instead?
  25         if TkVersion < 4.2:
  26             raise TclError, "this module requires Tk 4.2 or newer"
  27
  28         self.master  = master
  29         self.options = options
  30         if not master and options.get('parent'):
  31             self.master = options['parent']
  32
  33     def _fixoptions(self):
  34         pass # hook
  35
  36     def _fixresult(self, widget, result):
  37         return result # hook
  38
  39     def show(self, **options):
  40
  41         # update instance options
  42         for k, v in options.items():
  43             self.options[k] = v
  44
  45         self._fixoptions()
  46
  47         # we need a dummy widget to properly process the options
  48         # (at least as long as we use Tkinter 1.63)
  49         w = Frame(self.master)
  50
  51         try:
  52
  53             s = apply(w.tk.call, (self.command,) + w._options(self.options))
  54
  55             s = self._fixresult(w, s)
  56
  57         finally:
  58
  59             try:
  60                 # get rid of the widget
  61                 w.destroy()
  62             except:
  63                 pass
  64
  65         return s
  66