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/Lib/lib-tk/tkCommonDialog.py

http://unladen-swallow.googlecode.com/
Python | 60 lines | 28 code | 18 blank | 14 comment | 6 complexity | 7ddcf75e906ef967416b508ebea885f9 MD5 | raw file
 1# base class for tk common dialogues
 2#
 3# this module provides a base class for accessing the common
 4# dialogues available in Tk 4.2 and newer.  use tkFileDialog,
 5# tkColorChooser, and tkMessageBox to access the individual
 6# dialogs.
 7#
 8# written by Fredrik Lundh, May 1997
 9#
10
11from Tkinter import *
12
13class Dialog:
14
15    command  = None
16
17    def __init__(self, master=None, **options):
18
19        # FIXME: should this be placed on the module level instead?
20        if TkVersion < 4.2:
21            raise TclError, "this module requires Tk 4.2 or newer"
22
23        self.master  = master
24        self.options = options
25        if not master and options.get('parent'):
26            self.master = options['parent']
27
28    def _fixoptions(self):
29        pass # hook
30
31    def _fixresult(self, widget, result):
32        return result # hook
33
34    def show(self, **options):
35
36        # update instance options
37        for k, v in options.items():
38            self.options[k] = v
39
40        self._fixoptions()
41
42        # we need a dummy widget to properly process the options
43        # (at least as long as we use Tkinter 1.63)
44        w = Frame(self.master)
45
46        try:
47
48            s = w.tk.call(self.command, *w._options(self.options))
49
50            s = self._fixresult(w, s)
51
52        finally:
53
54            try:
55                # get rid of the widget
56                w.destroy()
57            except:
58                pass
59
60        return s