62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
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/*
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Copyright (C) 2010 Paul Davis
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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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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "pbd/stateful_diff_command.h"
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using namespace std;
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using namespace PBD;
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/** Create a new StatefulDiffCommand by examining the changes made to a Stateful
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* since the last time that clear_history was called on it.
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* @param s Stateful object.
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*/
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StatefulDiffCommand::StatefulDiffCommand (Stateful* s)
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: _object (s)
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{
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pair<XMLNode *, XMLNode*> const p = s->diff ();
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_before = p.first;
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_after = p.second;
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}
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StatefulDiffCommand::~StatefulDiffCommand ()
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{
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delete _before;
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delete _after;
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}
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void
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StatefulDiffCommand::operator() ()
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{
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_object->set_state (*_after, Stateful::current_state_version);
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}
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void
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StatefulDiffCommand::undo ()
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{
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_object->set_state (*_before, Stateful::current_state_version);
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}
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XMLNode&
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StatefulDiffCommand::get_state ()
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{
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/* XXX */
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}
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