58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
/*
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* Copyright (C) 2010-2015 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2010 Carl Hetherington <carl@carlh.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __pbd_stateful_diff_command_h__
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#define __pbd_stateful_diff_command_h__
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#include <memory>
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#include "pbd/command.h"
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#include "pbd/libpbd_visibility.h"
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namespace PBD
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{
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class StatefulDestructible;
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class PropertyList;
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/** A Command which stores its action as the differences between the before and after
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* state of a Stateful object.
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*/
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class LIBPBD_API StatefulDiffCommand : public PBD::Command
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{
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public:
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StatefulDiffCommand (std::shared_ptr<StatefulDestructible>);
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StatefulDiffCommand (std::shared_ptr<StatefulDestructible>, XMLNode const&);
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~StatefulDiffCommand ();
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void operator() ();
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void undo ();
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XMLNode& get_state () const;
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bool empty () const;
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private:
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std::weak_ptr<Stateful> _object; ///< the object in question
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PBD::PropertyList* _changes; ///< property changes to execute this command
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};
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}; // namespace PBD
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#endif /* __pbd_stateful_diff_command_h__ */
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