/*************************************************************************
 *  Copyright (C) 2008 by Volker Lanz <vl@fidra.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 3 of       *
 *  the License, or (at your option) any later version.                  *
 *                                                                       *
 *  This program 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 General Public License for more details.                         *
 *                                                                       *
 *  You should have received a copy of the GNU General Public License    *
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.*
 *************************************************************************/

#if !defined(COPYTARGET__H)

#define COPYTARGET__H

#include <qglobal.h>


/** Base class for something to copy to.

	Abstract base class for all copy targets. Used together with CopySource to
	implement moving, copying, restoring and backing up FileSystems.

	@see CopySource
	@author Volker Lanz <vl@fidra.de>
*/
class CopyTarget
{
	Q_DISABLE_COPY(CopyTarget)

	protected:
		CopyTarget() : m_SectorsWritten(0) {}
		virtual ~CopyTarget() {}

	public:
		virtual bool open() = 0;
		virtual qint32 sectorSize() const = 0;
		virtual bool writeSectors(void* buffer, qint64 writeOffset, qint64 numSectors) = 0;
		virtual qint64 firstSector() const = 0;
		virtual qint64 lastSector() const = 0;

		qint64 sectorsWritten() const { return m_SectorsWritten; }

	protected:
		void setSectorsWritten(qint64 s) { m_SectorsWritten = s; }
		
	private:
		qint64 m_SectorsWritten;
};

#endif
