gnc-gobject-utils.h

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/*
 * gnc-gobject-utils.h -- utility functions for working
 *                        with GObjects
 * Copyright (C) 2005 David Hampton <hampton@employees.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.
 *
 * 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, contact:
 *
 * Free Software Foundation           Voice:  +1-617-542-5942
 * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652
 * Boston, MA  02110-1301,  USA       gnu@gnu.org
 */

#ifndef GNC_GOBJECT_UTILS_H
#define GNC_GOBJECT_UTILS_H

#include <glib.h>
#include <glib-object.h>

void gnc_gobject_tracking_remember (GObject *object, GObjectClass *klass);

void gnc_gobject_tracking_forget (GObject *object);

const GList *gnc_gobject_tracking_get_list (const gchar *name);


void gnc_gobject_tracking_dump (void);

#define GNC_IMPLEMENT_INTERFACE(TYPE_IFACE, iface_init)       { \
  const GInterfaceInfo g_implement_interface_info = { \
      (GInterfaceInitFunc)(void (*)(void *, void *)) iface_init, NULL, NULL    \
  }; \
  g_type_add_interface_static (g_define_type_id, TYPE_IFACE, &g_implement_interface_info); \
}

#define GNC_DEFINE_TYPE_WITH_CODE(TN, t_n, T_P, _C_)            _GNC_DEFINE_TYPE_EXTENDED_BEGIN (TN, t_n, T_P, 0) {_C_;} _GNC_DEFINE_TYPE_EXTENDED_END()

#define _GNC_DEFINE_TYPE_EXTENDED_BEGIN(TypeName, type_name, TYPE_PARENT, flags) \
\
static void     type_name##_init         (TypeName        *self, void *klass); \
static void     type_name##_class_init   (TypeName##Class *klass); \
static gpointer type_name##_parent_class = NULL; \
static gint     TypeName##_private_offset; \
\
_G_DEFINE_TYPE_EXTENDED_CLASS_INIT(TypeName, type_name) \
\
G_GNUC_UNUSED \
static inline gpointer \
type_name##_get_instance_private (TypeName *self) \
{ \
  return (G_STRUCT_MEMBER_P (self, TypeName##_private_offset)); \
} \
\
GType \
type_name##_get_type (void) \
{ \
  static gsize g_define_type_id_static = 0; \
  if (g_once_init_enter (&g_define_type_id_static))  \
    { \
      GType g_define_type_id = \
        g_type_register_static_simple (TYPE_PARENT, \
                                       g_intern_static_string (#TypeName), \
                                       sizeof (TypeName##Class), \
                                       (GClassInitFunc) type_name##_class_intern_init, \
                                       sizeof (TypeName), \
                                       (GInstanceInitFunc) type_name##_init, \
                                       (GTypeFlags) flags); \
      { /* custom code follows */
#define _GNC_DEFINE_TYPE_EXTENDED_END()   \
        /* following custom code */     \
      }                                 \
      g_once_init_leave (&g_define_type_id_static, g_define_type_id); \
    }                                   \
  return g_define_type_id_static;    \
} /* closes type_name##_get_type() */


#endif /* GNC_GOBJECT_UTILS_H */