loader.h

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// -*- C++ -*-

/*
 * Gnome Chemistry Utils
 * gcu/loader.h
 *
 * Copyright (C) 2007-2011 Jean Bréfort <jean.brefort@normalesup.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 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
 * USA
 */

#ifndef GCU_LOADER_H
#define GCU_LOADER_H

#include "structs.h"
#include <list>
#include <map>
#include <string>
#include <goffice/goffice.h>
#include <gsf/gsf-input.h>
#include <gsf/gsf-output.h>

namespace gcu {

class Document;
class Loader;
class Object;

typedef struct {
        Loader *loader;
        bool read;
        bool write;
        bool supports2D;
        bool supports3D;
        bool supportsCrystals;
        bool supportsSpectra;
} LoaderStruct;

class Loader
{
public:
        Loader ();
        virtual ~Loader ();

        // static methods
        static void Init (Application *app);
        static bool GetFirstLoader (std::map<std::string, LoaderStruct>::iterator &it);
        static bool GetNextLoader (std::map<std::string, LoaderStruct>::iterator &it);
        static Loader *GetLoader (char const *mime_type);
        static Loader *GetSaver (char const *mime_type);

        // virtual methods
        virtual ContentType Read (Document *doc, GsfInput *in, char const *mime_type, GOIOContext *io);
        virtual bool Write (Object const *obj, GsfOutput *out, char const *mime_type, GOIOContext *io, ContentType type = ContentTypeMisc);

protected:
        void AddMimeType (const char *mime_type);
        void RemoveMimeType (const char *mime_type);

private:
        static bool Inited;

protected:
        std::list<std::string> MimeTypes;
};

}

#endif  //      GCU_LOADER_H