2 Copyright (C) 2010 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __pbd_stateful_diff_command_h__
21 #define __pbd_stateful_diff_command_h__
23 #include <boost/shared_ptr.hpp>
24 #include <boost/weak_ptr.hpp>
26 #include "pbd/libpbd_visibility.h"
27 #include "pbd/command.h"
32 class StatefulDestructible;
35 /** A Command which stores its action as the differences between the before and after
36 * state of a Stateful object.
38 class LIBPBD_API StatefulDiffCommand : public Command
41 StatefulDiffCommand (boost::shared_ptr<StatefulDestructible>);
42 StatefulDiffCommand (boost::shared_ptr<StatefulDestructible>, XMLNode const &);
43 ~StatefulDiffCommand ();
48 XMLNode& get_state ();
53 boost::weak_ptr<Stateful> _object; ///< the object in question
54 PBD::PropertyList* _changes; ///< property changes to execute this command
59 #endif /* __pbd_stateful_diff_command_h__ */