/***************************************************************************
 *   Copyright (C) 2010 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 2 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
 ***************************************************************************/

#if !defined(EXPORTERINTERFACE__H)

#define EXPORTERINTERFACE__H

#include "core/types.h"

#include <QObject>

#if defined(Q_OS_MAC)
// On Mac OS, the ancient g++ Apple ships (both 4.0 or 4.2) does not like us forward-declaring
// QXmlStreamWriter only, it wants to see the declaration to later compile our implementaions.
// Probably should better check for g++ version than platform, though.
#include <QXmlStreamWriter>
#else
class QXmlStreamWriter;
#endif

class ExporterInterface : public QObject
{
	Q_OBJECT

	public:
		ExporterInterface() {}
		virtual ~ExporterInterface() {}

	signals:
		void progress(int);

	public:
		virtual bool run(QXmlStreamWriter& xml, const Activities& activities);
		virtual bool canExport(const QString& suffix, const Activities& activities) = 0;
		virtual QString fileFormat() const = 0;

	protected:
		virtual bool writeRootElement(QXmlStreamWriter& xml, const Activities& activities) = 0;
		virtual bool writeActivities(QXmlStreamWriter& xml, const Activities& activities) = 0;
};

#endif
