Source code for pyface.undo.action.command_action

# (C) Copyright 2007-2022 Enthought, Inc., Austin, TX
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# license included in LICENSE.txt and may be redistributed only under
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# ------------------------------------------------------------------------------
# Copyright (c) 2007, 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>
# ------------------------------------------------------------------------------

# Enthought library imports.
from pyface.action.api import Action
from traits.api import Any, Callable, Instance
from ..i_command_stack import ICommandStack


[docs]class CommandAction(Action): """The CommandAction class is an Action class that wraps undo/redo commands. It is only useful for commands that do not take any arguments or return any result. """ #### 'CommandAction' interface ############################################ #: The command to create when the action is performed. command = Callable() #: The command stack onto which the command will be pushed when the action #: is performed. command_stack = Instance(ICommandStack) #: This is the data on which the command operates. data = Any() ########################################################################### # 'Action' interface. ###########################################################################
[docs] def perform(self, event): """This is reimplemented to push a new command instance onto the command stack. """ self.command_stack.push(self.command(data=self.data))
def _name_default(self): """ This gets the action name from the command. """ if self.command: name = self.command().name else: name = "" return name