action.h

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/* -*- Mode: c++ -*- */
/*
 *  this is part of Spm
 *
 *  Copyright (c) 2008 Guillaume Chevallereau
 *
 *  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 usefull 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., 
 *  59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 */
#ifndef ACTION_H
#define ACTION_H

#include <boost/signals.hpp>
#include <miniXml/ustring.h>
#include <util/utilException.h>

namespace Spm
{
  namespace Core
  {
    class Action
    {
    protected:
      boost::signal<void (Action *)> begin_;
      boost::signal<void (Action *)> end_;
      virtual void doRun () = 0;
      miniXml::ustring err_;
    public:
      virtual ~Action()
      {
      }
      void run()
      {
        try
          {
            begin_(this);
            doRun ();
            end_(this);
          }
        catch (Spm::Exception & e)
          {
            err_= e.what();
          }
      }

      boost::signal<void (Action *)> & signalBegin ()
      {
        return begin_;
      }
      
      boost::signal<void (Action *)> & signalEnd ()
      {
        return end_;
      }

      const miniXml::ustring error()
      {
        return err_;
      }
    };
  };
};

#endif

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