1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
# (C) Copyright 2007-2023 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) 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
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.
###########################################################################
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
|
