// dynmenu.hpp -- manage dynamic menus
//
// Written by Frederic Bouvier, started February 2004.
//
// Copyright (C) 2004  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: dynmenu.hpp,v 1.1 2004/02/14 14:17:38 fredb2 Exp $

#ifndef _dynmenu_hpp_
#define _dynmenu_hpp_

#include <string>

#include <FL/Fl_Menu_.H>

class FGSD_DynamicMenu {
   public:
      virtual ~FGSD_DynamicMenu() {}

      virtual void increment() = 0;
      virtual void decrement() = 0;
};

class FGSD_DynamicSubMenu : public FGSD_DynamicMenu {
   public:
      FGSD_DynamicSubMenu();

      void init( Fl_Menu_ *menu, const char *parentLabel, int position, FGSD_DynamicMenu *next );
      void clear();
      int add( const char *label, int shortcut, Fl_Callback *callback, void *user_data=0, int flags=0);
      int addNone();
      int first() const { return _first; }

      void increment();
      void decrement();

   private:
      Fl_Menu_ *_menu;
      std::string _parentLabel;
      int _first;
      int _last;
      FGSD_DynamicMenu *_next;
};

class FGSD_DynamicMenuItem : public FGSD_DynamicMenu {
   public:
      FGSD_DynamicMenuItem();

      void init( Fl_Menu_ *menu, const char *parentLabel, int position, FGSD_DynamicMenu *next );
      int position() const { return _pos; }
      void label( const char *);
      void activate();
      void deactivate();

      void increment();
      void decrement();

   private:
      Fl_Menu_ *_menu;
      std::string _parentLabel;
      std::string _label;
      int _pos;
      FGSD_DynamicMenu *_next;
};

#endif