SVGSupport/kdom/Shared.h

/*
    Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
                  2004, 2005 Rob Buis <buis@kde.org>

    This file is part of the KDE project

    This library 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 of the License, or (at your option) any later version.

    This library 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 library; 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 KDOM_Shared_H
#define KDOM_Shared_H

namespace KDOM
{
    class Shared
    {
    public:
        Shared();
        virtual ~Shared();

        void ref();
        virtual void deref();

        int refCount() const;

    protected:
        int m_ref;
    };

    template<class T>
    inline void KDOM_SAFE_SET(T *&a, T *b)
    {
        if (b) b->ref();
        if (a) a->deref();
        a = b;
    }
};

#endif

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