
/**************************************************************************
 *                                                                        *
 *  Regina - A Normal Surface Theory Calculator                           *
 *  Qt User Interface                                                     *
 *                                                                        *
 *  Copyright (c) 1999-2021, Ben Burton                                   *
 *  For further details contact Ben Burton (bab@debian.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.                       *
 *                                                                        *
 *  As an exception, when this program is distributed through (i) the     *
 *  App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or     *
 *  (iii) Google Play by Google Inc., then that store may impose any      *
 *  digital rights management, device limits and/or redistribution        *
 *  restrictions that are required by its terms of service.               *
 *                                                                        *
 *  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 St, Fifth Floor, Boston,       *
 *  MA 02110-1301, USA.                                                   *
 *                                                                        *
 **************************************************************************/

/*! \file recogniserhandler.h
 *  \brief Allows interaction with data files for Matveev's
 *  3-manifold recogniser.
 */

#ifndef __RECOGNISERHANDLER_H
#define __RECOGNISERHANDLER_H

#include "packetexporter.h"

/**
 * An object responsible for exporting triangulations
 * to text files that can be read by Matveev's 3-manifold recogniser.
 *
 * Rather than creating new objects of this class, the globally
 * available object RecogniserHandler::instance should always be used.
 */
class RecogniserHandler : public PacketExporter {
    using PacketExporter::exportData;
    public:
        /**
         * A globally available instance of this class.
         */
        static const RecogniserHandler instance;

    public:
        /**
         * PacketExporter overrides:
         */
        virtual PacketFilter* canExport() const;
        virtual bool exportData(regina::Packet* data,
            const QString& fileName, QWidget* parentWidget) const;

    private:
        /**
         * Don't allow people to construct their own Recogniser handlers.
         */
        RecogniserHandler();
};

inline RecogniserHandler::RecogniserHandler() {
}

#endif
