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# Copyright (c) 2005, Enthought, Inc.
# All rights reserved.
# This software is provided without warranty under the terms of the BSD
# license included in enthought/LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license. The license
# is also available online at
# Thanks for using Enthought open source!
# Author: Enthought, Inc.
# Description: <Enthought pyface package component>
""" A dialog that allows the user to chose a single item from a list. """
from __future__ import absolute_import
from .constant import OK
from .toolkit import toolkit_object
# Import the toolkit specific version.
SingleChoiceDialog = toolkit_object('single_choice_dialog:SingleChoiceDialog')
# Convenience functions.
def choose_one(parent, message, choices, title='Choose', cancel=True):
""" Convenience method to show an information message dialog.
parent : toolkit control or None
The toolkit control that should be the parent of the dialog.
message : str
The text of the message to display.
choices : list
List of objects to choose from.
title : str
The text of the dialog title.
cancel : bool
Whether or not the dialog can be cancelled.
choice : any
The selected object, or None if cancelled.
dialog = SingleChoiceDialog(
parent=parent, message=message, choices=choices, title=title,
result =
if result == OK:
choice = dialog.choice
choice = None
return choice