addressbook/libedata-book/e-book-backend-factory.h

   1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
   2 /* e-book-backend-factory.h
   3  *
   4  * Copyright (C) 2004  Novell, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this program; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  *
  20  * Author: Chris Toshok <toshok@ximian.com>
  21  */
  22
  23 #ifndef _E_BOOK_BACKEND_FACTORY_H_
  24 #define _E_BOOK_BACKEND_FACTORY_H_
  25
  26 #include <glib-object.h>
  27 #include "e-book-backend.h"
  28
  29 G_BEGIN_DECLS
  30
  31 #define E_TYPE_BOOK_BACKEND_FACTORY        (e_book_backend_factory_get_type ())
  32 #define E_BOOK_BACKEND_FACTORY(o)          (G_TYPE_CHECK_INSTANCE_CAST ((o), E_TYPE_BOOK_BACKEND_FACTORY, EBookBackendFactory))
  33 #define E_BOOK_BACKEND_FACTORY_CLASS(k)    (G_TYPE_CHECK_CLASS_CAST((k), E_TYPE_BOOK_BACKEND_FACTORY, EBookBackendFactoryClass))
  34 #define E_IS_BOOK_BACKEND_FACTORY(o)       (G_TYPE_CHECK_INSTANCE_TYPE ((o), E_TYPE_BOOK_BACKEND_FACTORY))
  35 #define E_IS_BOOK_BACKEND_FACTORY_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), E_TYPE_BOOK_BACKEND_FACTORY))
  36 #define E_BOOK_BACKEND_FACTORY_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), E_TYPE_BOOK_BACKEND_FACTORY, EBookBackendFactoryClass))
  37
  38 typedef struct _EBookBackendFactoryPrivate EBookBackendFactoryPrivate;
  39
  40 typedef struct {
  41         GObject            parent_object;
  42 } EBookBackendFactory;
  43
  44 typedef struct {
  45         GObjectClass parent_class;
  46
  47         const char*   (*get_protocol) (EBookBackendFactory *factory);
  48         EBookBackend* (*new_backend)  (EBookBackendFactory *factory);
  49 } EBookBackendFactoryClass;
  50
  51 GType                e_book_backend_factory_get_type             (void);
  52
  53 const char*          e_book_backend_factory_get_protocol         (EBookBackendFactory *factory);
  54 EBookBackend*        e_book_backend_factory_new_backend          (EBookBackendFactory *factory);
  55
  56
  57 /* use this macro for simple, 1 factory modules */
  58 #define E_BOOK_BACKEND_FACTORY_SIMPLE(p,t,f) \
  59 typedef struct { \
  60         EBookBackendFactory      parent_object; \
  61 } EBookBackend##t##Factory; \
  62 \
  63 typedef struct { \
  64         EBookBackendFactoryClass parent_class; \
  65 } EBookBackend##t##FactoryClass; \
  66 \
  67 static void \
  68 _ ## p ##_factory_instance_init (EBookBackend## t ##Factory *factory) \
  69 { \
  70 } \
  71 \
  72 static const char * \
  73 _ ## p ##_get_protocol (EBookBackendFactory *factory) \
  74 { \
  75         return #p; \
  76 } \
  77 \
  78 static EBookBackend* \
  79 _ ## p ##_new_backend (EBookBackendFactory *factory) \
  80 { \
  81         return (f) (); \
  82 } \
  83 \
  84 static void \
  85 _ ## p ##_factory_class_init (EBookBackend## t ##FactoryClass *klass) \
  86 { \
  87         E_BOOK_BACKEND_FACTORY_CLASS (klass)->get_protocol = _ ## p ##_get_protocol; \
  88         E_BOOK_BACKEND_FACTORY_CLASS (klass)->new_backend = _ ## p ##_new_backend; \
  89 } \
  90 \
  91 static GType \
  92 _ ## p ##_factory_get_type (GTypeModule *module) \
  93 { \
  94         GType type; \
  95 \
  96         GTypeInfo info = { \
  97                 sizeof (EBookBackend##t##FactoryClass), \
  98                 NULL, /* base_class_init */ \
  99                 NULL, /* base_class_finalize */ \
 100                 (GClassInitFunc)  _ ## p ##_factory_class_init, \
 101                 NULL, /* class_finalize */ \
 102                 NULL, /* class_data */ \
 103                 sizeof (EBookBackend##t##Factory), \
 104                 0,    /* n_preallocs */ \
 105                 (GInstanceInitFunc) _ ## p ##_factory_instance_init \
 106         }; \
 107 \
 108         type = g_type_module_register_type (module, \
 109                                             E_TYPE_BOOK_BACKEND_FACTORY, \
 110                                             "EBookBackend" #t "Factory", \
 111                                             &info, 0); \
 112 \
 113         return type; \
 114 }
 115
 116 G_END_DECLS
 117
 118 #endif /* _E_BOOK_BACKEND_FACTORY_H_ */