/***************************************************************************
   UndoAddMetaDataAction.h  -  Undo action for insertion of meta data
			     -------------------
    begin                : Wed Aug 16 2006
    copyright            : (C) 2006 by Thomas Eschenbacher
    email                : Thomas Eschenbacher <Thomas.Eschenbacher@gmx.de>

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

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef UNDO_ADD_META_DATA_ACTION_H
#define UNDO_ADD_META_DATA_ACTION_H

#include "config.h"

#include <QList>
#include <QString>

#include "libkwave/MetaData.h"
#include "libkwave/MetaDataList.h"
#include "libkwave/Sample.h"
#include "libkwave/undo/UndoAction.h"

namespace Kwave
{

    class SignalManager;

    /**
     * Undo action for inserting meta data.
     */
    class UndoAddMetaDataAction: public Kwave::UndoAction
    {
    public:

	/**
	 * Constructor
	 * @param meta_data reference to the meta data that has been inserted
	 */
	explicit UndoAddMetaDataAction(const Kwave::MetaDataList &meta_data);

	/** Destructor */
	virtual ~UndoAddMetaDataAction();

	/**
	 * Returns a verbose short description of the action.
	 */
	virtual QString description();

	/** @see UndoAction::undoSize() */
	virtual qint64 undoSize();

	/** @see UndoAction::redoSize() */
	virtual qint64 redoSize();

	/** @see UndoAction::store() */
	virtual bool store(SignalManager &manager);

	/** @see UndoAction::undo() */
	virtual Kwave::UndoAction *undo(Kwave::SignalManager &manager,
	                                bool with_redo);

    protected:

	/** description of the action */
	QString m_description;

	/** index of the first sample position */
	sample_index_t m_offset;

	/** number of affected samples */
	sample_index_t m_length;

	/** list of affected track inidices */
	QList<unsigned int> m_tracks;

    };
}

#endif /* UNDO_ADD_META_DATA_ACTION_H */

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