# loader.h

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    00001 // -*- C++ -*-
    00002
    00003 /*
    00004  * Gnome Chemistry Utils
    00005  * gcu/loader.h
    00006  *
    00007  * Copyright (C) 2007-2008 Jean Bréfort <jean.brefort@normalesup.org>
    00008  *
    00009  * This program is free software; you can redistribute it and/or
    00010  * modify it under the terms of the GNU General Public License as
    00011  * published by the Free Software Foundation; either version 2 of the
    00012  * License, or (at your option) any later version.
    00013  *
    00014  * This program is distributed in the hope that it will be useful,
    00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00017  * GNU General Public License for more details.
    00018  *
    00019  * You should have received a copy of the GNU General Public License
    00020  * along with this program; if not, write to the Free Software
    00021  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
    00022  * USA
    00023  */
    00024
    00025 #ifndef GCU_LOADER_H
    00026 #define GCU_LOADER_H
    00027
    00028 #include <list>
    00029 #include <map>
    00030 #include <string>
    00031 #include <goffice/app/io-context.h>
    00032 #include <gsf/gsf-input.h>
    00033 #include <gsf/gsf-output.h>
    00034
    00036 namespace gcu {
    00037
    00038 class Document;
    00039 class Loader;
    00040
    00046 typedef struct {
    00050         Loader *loader;
    00054         bool read;
    00058         bool write;
    00062         bool supports2D;
    00066         bool supports3D;
    00070         bool supportsCrystals;
    00074         bool supportsSpectra;
    00075 } LoaderStruct;
    00076
    00142 class Loader
    00143 {
    00144 public:
    00149         Loader ();
    00154         virtual ~Loader ();
    00155
    00156         // static methods
    00161         static void Init ();
    00170         static bool GetFirstLoader (std::map<std::string, LoaderStruct>::iterator &it);
    00177         static bool GetNextLoader (std::map<std::string, LoaderStruct>::iterator &it);
    00182         static Loader *GetLoader (char const *mime_type);
    00187         static Loader *GetSaver (char const *mime_type);
    00188
    00189         // virtual methods
    00201         virtual bool Read (Document *doc, GsfInput *in, char const *mime_type, IOContext *io);
    00213         virtual bool Write (Document *doc, GsfOutput *out, char const *mime_type, IOContext *io);
    00214
    00215 protected:
    00221         void AddMimeType (const char *mime_type);
    00227         void RemoveMimeType (const char *mime_type);
    00228
    00229 private:
    00230         static bool Inited;
    00231
    00232 protected:
    00236         std::list<std::string> MimeTypes;
    00237 };
    00238
    00239 }
    00240
    00241 #endif  //      GCU_LOADER_H