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# (C) Copyright 2008-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
# -----------------------------------------------------------------------------
# Copyright (c) 2008, Riverbank Computing Limited
# 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 http://www.enthought.com/licenses/BSD.txt
# Thanks for using Enthought open source!
#
# Author: Riverbank Computing Limited
# Description: <Enthought undo package component>
# -----------------------------------------------------------------------------
# Standard library imports.
import logging
# Enthought library imports.
from pyface.api import GUI, YES
from pyface.workbench.api import Workbench
from pyface.undo.api import UndoManager
# Local imports.
from example_undo_window import ExampleUndoWindow
from model import Label
# Log to stderr.
logging.getLogger().addHandler(logging.StreamHandler())
logging.getLogger().setLevel(logging.DEBUG)
class ExampleUndo(Workbench):
""" The ExampleUndo class is a workbench that creates ExampleUndoWindow
windows.
"""
#### 'Workbench' interface ################################################
# The factory (in this case simply a class) that is used to create
# workbench windows.
window_factory = ExampleUndoWindow
###########################################################################
# Private interface.
###########################################################################
def _exiting_changed(self, event):
""" Called when the workbench is exiting. """
if self.active_window.confirm('Ok to exit?') != YES:
event.veto = True
return
def main(argv):
""" A simple example of using the the undo framework in a workbench. """
# Create the GUI.
gui = GUI()
# Create the workbench.
workbench = ExampleUndo(state_location=gui.state_location)
window = workbench.create_window(position=(300, 300), size=(400, 300))
window.open()
# Create some objects to edit.
label = Label(text="Label")
label2 = Label(text="Label2")
# Edit the objects.
window.edit(label)
window.edit(label2)
# Start the GUI event loop.
gui.start_event_loop()
return
if __name__ == '__main__':
import sys
main(sys.argv)
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