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// apt_undo_tree.h -*-c++-*-
//
// Copyright (C) 2005 Daniel Burrows
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
//
#ifndef APT_UNDO_TREE_H
#define APT_UNDO_TREE_H
#include "menu_tree.h"
/** \brief Extends the basic menu_tree with support for the APT undo queue
*
*
* Extends the basic menu_tree with support for the APT undo queue.
* NB: this really ought to be a mixin for menu_redirect..
*
* \file apt_undo_tree.h
*/
class apt_undo_tree : public menu_tree
{
protected:
apt_undo_tree();
public:
cwidget::util::ref_ptr<apt_undo_tree> create()
{
cwidget::util::ref_ptr<apt_undo_tree> rval = new apt_undo_tree;
rval->decref();
return rval;
}
/** \return \b true if the global APT undo queue is non-empty. */
bool undo_undo_enabled();
/** Execute the top undo from the global APT undo queue.
*
* \return \b true.
*/
bool undo_undo();
};
#endif // APT_UNDO_TREE_H
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