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
  17 class Dialog:
  18
  19     command  = None
  20
  21     def __init__(self, master=None, **options):
  22
  23         # FIXME: should this be placed on the module level instead?
  24         if TkVersion < 4.2:
  25             raise TclError, "this module requires Tk 4.2 or newer"
  26
  27         self.master  = master
  28         self.options = options
  29         if not master and options.get('parent'):
  30             self.master = options['parent']
  31
  32     def _fixoptions(self):
  33         pass # hook
  34
  35     def _fixresult(self, widget, result):
  36         return result # hook
  37
  38     def show(self, **options):
  39
  40         # update instance options
  41         for k, v in options.items():
  42             self.options[k] = v
  43
  44         self._fixoptions()
  45
  46         # we need a dummy widget to properly process the options
  47         # (at least as long as we use Tkinter 1.63)
  48         w = Frame(self.master)
  49
  50         try:
  51
  52             s = w.tk.call(self.command, *w._options(self.options))
  53
  54             s = self._fixresult(w, s)
  55
  56         finally:
  57
  58             try:
  59                 # get rid of the widget
  60                 w.destroy()
  61             except:
  62                 pass
  63
  64         return s