def __init__(self, parent, title=None):
'''Initialize a dialog.
Arguments:
parent -- a parent window (the application window)
title -- the dialog title
'''
master = parent
if master is None:
master = _get_temp_root()
Toplevel.__init__(self, master)
self.withdraw() # remain invisible for now
# If the parent is not viewable, don't
# make the child transient, or else it
# would be opened withdrawn
if parent is not None and parent.winfo_viewable():
self.transient(parent)
if title:
self.title(title)
_setup_dialog(self)
self.parent = parent
self.result = None
body = Frame(self)
self.initial_focus = self.body(body)
body.pack(padx=5, pady=5)
self.buttonbox()
if self.initial_focus is None:
self.initial_focus = self
self.protocol("WM_DELETE_WINDOW", self.cancel)
_place_window(self, parent)
self.initial_focus.focus_set()
# wait for window to appear on screen before calling grab_set
self.wait_visibility()
self.grab_set()
self.wait_window(self)
def show(self, **options):
# update instance options
for k, v in options.items():
self.options[k] = v
self._fixoptions()
master = self.master
if master is None:
master = _get_temp_root()
try:
self._test_callback(master) # The function below is replaced for some tests.
s = master.tk.call(self.command, *master._options(self.options))
s = self._fixresult(master, s)
finally:
_destroy_temp_root(master)
return s