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/*
*
* $Id: sourceheader,v 1.3 2005/01/19 13:03:46 trueg Exp $
* Copyright (C) 2005 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* 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.
* See the file "COPYING" for the exact licensing terms.
*/
#ifndef _K3B_AUDIO_DATA_SOURCE_ITERATOR_H_
#define _K3B_AUDIO_DATA_SOURCE_ITERATOR_H_
#include "k3b_export.h"
class K3bAudioDataSource;
class K3bAudioTrack;
class K3bAudioDoc;
/**
* This Iterator iterates over the sources in an audio project
*
* Be aware that this iterator does not properly update when the doc
* changes. A manual update can be issued with first(). This is becasue
* an update would either involve slots (this being a TQObject) which is
* too much overhead or the AudioDoc would need to have knowledge of all
* the iterators which is also overhead that would be overkill.
*/
class LIBK3B_EXPORT K3bAudioDataSourceIterator
{
public:
/**
* This will place the iterator on the first source just like first() does.
*/
explicit K3bAudioDataSourceIterator( K3bAudioDoc* );
K3bAudioDataSource* current() const;
bool hasNext() const;
/**
* \return the next source or 0 if at end.
*/
K3bAudioDataSource* next();
/**
* Reset the iterator
*/
K3bAudioDataSource* first();
private:
K3bAudioDoc* m_doc;
K3bAudioTrack* m_currentTrack;
K3bAudioDataSource* m_currentSource;
};
#endif
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