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 filedialog,
5# colorchooser, and messagebox to access the individual
6# dialogs.
7#
8# written by Fredrik Lundh, May 1997
9#
10
11__all__ = ["Dialog"]
12
13from tkinter import Frame
14
15
16class Dialog:
17
18    command = None
19
20    def __init__(self, master=None, **options):
21        self.master = master
22        self.options = options
23        if not master and options.get('parent'):
24            self.master = options['parent']
25
26    def _fixoptions(self):
27        pass # hook
28
29    def _fixresult(self, widget, result):
30        return result # hook
31
32    def show(self, **options):
33
34        # update instance options
35        for k, v in options.items():
36            self.options[k] = v
37
38        self._fixoptions()
39
40        # we need a dummy widget to properly process the options
41        # (at least as long as we use Tkinter 1.63)
42        w = Frame(self.master)
43
44        try:
45
46            s = w.tk.call(self.command, *w._options(self.options))
47
48            s = self._fixresult(w, s)
49
50        finally:
51
52            try:
53                # get rid of the widget
54                w.destroy()
55            except:
56                pass
57
58        return s
59