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// resolver_undo.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 RESOLVER_UNDO_H
#define RESOLVER_UNDO_H
#include <generic/util/undo.h>
/** \brief Undo items related to the resolver
*
*
* Undo items related to the resolver. (Q: these could be unified
* into a single item based on slots or somesuch?)
*
* \file resolver_undo.h
*/
template<typename PackageUniverse>
class generic_problem_resolver;
/** An undoable that executes the given action on the given object. */
template<typename PackageUniverse, typename T>
class undo_resolver_manipulation : public undoable
{
public:
typedef void (generic_problem_resolver<PackageUniverse>::*undo_method)(const T &, undo_group *);
generic_problem_resolver<PackageUniverse> *resolver;
T t;
undo_method reverse_action;
public:
undo_resolver_manipulation(generic_problem_resolver<PackageUniverse> *_resolver,
const T &_t,
undo_method _reverse_action)
: resolver(_resolver), t(_t), reverse_action(_reverse_action)
{
}
void undo()
{
(resolver->*reverse_action)(t, NULL);
}
};
#endif // RESOLVER_UNDO_H
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