/******************************************************************************

 *

 * $Id$

 *

 *

 * Copyright (C) 1997-2015 by Dimitri van Heesch.

 *

 * Permission to use, copy, modify, and distribute this software and its

 * documentation under the terms of the GNU General Public License is hereby 

 * granted. No representations are made about the suitability of this software 

 * for any purpose. It is provided "as is" without express or implied warranty.

 * See the GNU General Public License for more details.

 *

 */

#ifndef BASEITERATOR_H

#define BASEITERATOR_H

#include <qlist.h>

#include <doxmlintf.h>

template<class Intf,class ElemIntf,class ElemImpl> class BaseIterator : 

        public Intf, public QListIterator<ElemImpl>

{

  public:

    BaseIterator(const QList<ElemImpl> &list) : QListIterator<ElemImpl>(list) {}

    virtual ~BaseIterator() {}

    virtual ElemIntf *toFirst() { return QListIterator<ElemImpl>::toFirst(); }

    virtual ElemIntf *toLast()  { return QListIterator<ElemImpl>::toLast(); }

    virtual ElemIntf *toNext()  { return QListIterator<ElemImpl>::operator++(); }

    virtual ElemIntf *toPrev()  { return QListIterator<ElemImpl>::operator--(); }

    virtual ElemIntf *current() const { return QListIterator<ElemImpl>::current(); }

    virtual void release() { delete this; }

};

template<class Intf,class ElemIntf,class ElemImpl,class Intermediate> 

        class BaseIteratorVia : 

        public Intf, public QListIterator<ElemImpl>

{

  public:

    BaseIteratorVia(const QList<ElemImpl> &list) : QListIterator<ElemImpl>(list) {}

    virtual ~BaseIteratorVia() {}

    virtual ElemIntf *toFirst() { return static_cast<Intermediate *>(QListIterator<ElemImpl>::toFirst()); }

    virtual ElemIntf *toLast()  { return static_cast<Intermediate *>(QListIterator<ElemImpl>::toLast()); }

    virtual ElemIntf *toNext()  { return static_cast<Intermediate *>(QListIterator<ElemImpl>::operator++()); }

    virtual ElemIntf *toPrev()  { return static_cast<Intermediate *>(QListIterator<ElemImpl>::operator--()); }

    virtual ElemIntf *current() const { return static_cast<Intermediate *>(QListIterator<ElemImpl>::current()); }

    virtual void release() { delete this; }

};

#endif