// -*-C++-*- 

/*  inc/containers/FrozenValue.hpp  */


/*
 * Author: Philogelos A. <Philogelos@yahoo.com>
 * Maintainer: Philogelos A.
 * Keywords: C++, library, containers
 *
 * Copyright (C) 1998, 1999 Philogelos A.
 *
 * This file is part of Quercus Robusta.
 *
 * Quercus Robusta is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Library General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This software 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 Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this software; see the file COPYING.LIB.  If not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */


#ifndef __FROZENVALUE_HPP__
#define __FROZENVALUE_HPP__

/* $Id: FrozenValue.hpp,v 1.3 1999/03/03 19:09:09 philogelos Exp $ */

#include "PositionAdapter.hpp"
#include "Object.hpp"
#include "defines.h"
#include "Map.hpp"

interface Top;
interface Map;
/**
   Position holding value inside.

   @author Philogelos
   @created ²âà 30 ¸îÝ 1998 20:02:48
*/
class FrozenValue : public Position,
					public virtual Object
{

  /**
	*/
public: FrozenValue( Container *aHost, Top *aValue );

  /**
	*/
public: virtual ~FrozenValue();

public: virtual Top *getValue() const;

  /**
	 Checks that position is still valid
	 within host container (which it always does.).
  */
public:  virtual boolean   isValid () const;

public:  virtual Container *getContainer() const;

public: virtual Top *clone() const;

  /**
	*/
public: virtual String  getString() const;

  /**
	*/
public: virtual String  getClassName() const;

protected: const Top *value;
protected: const Container *container;
};

/* $Log: FrozenValue.hpp,v $
 * Revision 1.3  1999/03/03 19:09:09  philogelos
 * Put sources under GNU Library License
 *
 * Revision 1.2  1999/02/28 12:54:06  philogelos
 * Sub-typed from Object
 *
 * Revision 1.1.1.1  1998/11/25 20:11:05  philogelos
 * Quercus Robusta
 *
 * Revision 1.1  1998/07/09 09:30:28  philogelos
 * new files added to the repository
 * */

/* __FROZENVALUE_HPP__ */
#endif