qxtpimpl.h

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/****************************************************************************
 **
 ** Copyright (C) Qxt Foundation. Some rights reserved.
 **
 ** This file is part of the QxtCore module of the Qxt library.
 **
 ** This library is free software; you can redistribute it and/or modify it
 ** under the terms of the Common Public License, version 1.0, as published
 ** by IBM, and/or under the terms of the GNU Lesser General Public License,
 ** version 2.1, as published by the Free Software Foundation.
 **
 ** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
 ** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY
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 ** FITNESS FOR A PARTICULAR PURPOSE.
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 ** file. See the LICENSE file and the cpl1.0.txt/lgpl-2.1.txt files
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/****************************************************************************
** This file is derived from code bearing the following notice:
** The sole author of this file, Adam Higerd, has explicitly disclaimed all
** copyright interest and protection for the content within. This file has
** been placed in the public domain according to United States copyright
** statute and case law. In jurisdictions where this public domain dedication
** is not legally recognized, anyone who receives a copy of this file is
** permitted to use, modify, duplicate, and redistribute this file, in whole
** or in part, with no restrictions or conditions. In these jurisdictions,
** this file shall be copyright (C) 2006-2008 by Adam Higerd.
****************************************************************************/

#ifndef QXTPIMPL_H
#define QXTPIMPL_H

#define QXT_DECLARE_PRIVATE(PUB) friend class PUB##Private; QxtPrivateInterface<PUB, PUB##Private> qxt_d;

#define QXT_DECLARE_PUBLIC(PUB) friend class PUB;

#define QXT_INIT_PRIVATE(PUB) qxt_d.setPublic(this);

#define QXT_D(PUB) PUB##Private& d = qxt_d()

#define QXT_P(PUB) PUB& p = qxt_p()

#ifdef QXT_DOXYGEN_RUN

QxtPrivate<PUB>& qxt_d();

const QxtPrivate<PUB>& qxt_d();

PUB& qxt_p();

const PUB& qxt_p();
#endif

#ifndef QXT_DOXYGEN_RUN
template <typename PUB>
class QxtPrivate
{
public:
    virtual ~QxtPrivate()
    {}
    inline void QXT_setPublic(PUB* pub)
    {
        qxt_p_ptr = pub;
    }

protected:
    inline PUB& qxt_p()
    {
        return *qxt_p_ptr;
    }
    inline const PUB& qxt_p() const
    {
        return *qxt_p_ptr;
    }

private:
    PUB* qxt_p_ptr;
};

template <typename PUB, typename PVT>
class QxtPrivateInterface
{
    friend class QxtPrivate<PUB>;
public:
    QxtPrivateInterface()
    {
        pvt = new PVT;
    }
    ~QxtPrivateInterface()
    {
        delete pvt;
    }

    inline void setPublic(PUB* pub)
    {
        pvt->QXT_setPublic(pub);
    }
    inline PVT& operator()()
    {
        return *static_cast<PVT*>(pvt);
    }
    inline const PVT& operator()() const
    {
        return *static_cast<PVT*>(pvt);
    }
private:
    QxtPrivate<PUB>* pvt;
};
#endif

#endif