cpython/Lib/tkinter/commondialog.py
Serhiy Storchaka bb70b2afe3
bpo-15303: Support widgets with boolean value False in Tkinter (GH-23904)
Use `widget is None` instead of checking the boolean value of a widget.
2020-12-25 17:04:26 +02:00

59 lines
1.2 KiB
Python

# base class for tk common dialogues
#
# this module provides a base class for accessing the common
# dialogues available in Tk 4.2 and newer. use filedialog,
# colorchooser, and messagebox to access the individual
# dialogs.
#
# written by Fredrik Lundh, May 1997
#
__all__ = ["Dialog"]
from tkinter import Frame
class Dialog:
command = None
def __init__(self, master=None, **options):
if master is None:
master = options.get('parent')
self.master = master
self.options = options
def _fixoptions(self):
pass # hook
def _fixresult(self, widget, result):
return result # hook
def show(self, **options):
# update instance options
for k, v in options.items():
self.options[k] = v
self._fixoptions()
# we need a dummy widget to properly process the options
# (at least as long as we use Tkinter 1.63)
w = Frame(self.master)
try:
s = w.tk.call(self.command, *w._options(self.options))
s = self._fixresult(w, s)
finally:
try:
# get rid of the widget
w.destroy()
except:
pass
return s