// actionmgr.hpp -- the action manager
//
// Written by Frederic Bouvier, started May 2002.
//
// Copyright (C) 2002  Frederic Bouvier - fredb@users.sourceforge.net
//
// 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; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id: actionmgr.hpp,v 1.5 2002/06/21 06:49:09 fredb Exp $

#ifndef _actionmgr_hpp_
#define _actionmgr_hpp_

#ifdef _MSC_VER
#pragma warning( disable : 4786 )
#endif

#include <map>
#include <list>
#include <vector>
#include <string>

#include <simgear/timing/timestamp.hxx>

class FGSD_Action;
class FGSD_ActionFactory;
class SGPropertyNode;

class FGSD_ActionManager {
   public:
      typedef std::map<std::string, FGSD_ActionFactory *> FactoryMap;
      typedef std::list<FGSD_Action *> ActionList;

      FGSD_ActionManager();
      void registerFactory( const std::string &__name, FGSD_ActionFactory *__fact );
      bool loadAndExecute( const char *__project, SGPropertyNode *__node );
      bool save( const char *__project, SGPropertyNode *__node );
      size_t getWeight( const char *__project, SGPropertyNode *__node ) const;
      bool getPosition( bool undo, double &lon, double &lat ) const;
      void clear();

      bool undo();
      bool redo();
      void newAction( FGSD_Action *__action );

      bool undoable();
      bool redoable();
      FGSD_Action *firstUndoable();
      FGSD_Action *firstRedoable();

      std::vector<std::string> getUndoDesc() const;
      std::vector<std::string> getRedoDesc() const;

      bool modified() const;

   private:
      FactoryMap _factoryMap;
      ActionList _undoable;
      ActionList _redoable;
      SGTimeStamp _lastNewAction;
      size_t _lastSaveSize;
};

#endif