gio/gdbusinterface.c

   1 /* GDBus - GLib D-Bus Library
   2  *
   3  * Copyright (C) 2008-2010 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library 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  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Author: David Zeuthen <davidz@redhat.com>
  21  */
  22
  23 #include "config.h"
  24
  25 #include "gdbusobject.h"
  26 #include "gdbusinterface.h"
  27
  28 #include "glibintl.h"
  29
  30 /**
  31  * SECTION:gdbusinterface
  32  * @short_description: Base type for D-Bus interfaces
  33  * @include: gio/gio.h
  34  *
  35  * The #GDBusInterface type is the base type for D-Bus interfaces both
  36  * on the service side (see #GDBusInterfaceSkeleton) and client side
  37  * (see #GDBusProxy).
  38  */
  39
  40 typedef GDBusInterfaceIface GDBusInterfaceInterface;
  41 G_DEFINE_INTERFACE (GDBusInterface, g_dbus_interface, G_TYPE_OBJECT)
  42
  43 static void
  44 g_dbus_interface_default_init (GDBusInterfaceIface *iface)
  45 {
  46 }
  47
  48 /* ---------------------------------------------------------------------------------------------------- */
  49
  50 /**
  51  * g_dbus_interface_get_info:
  52  * @interface_: An exported D-Bus interface.
  53  *
  54  * Gets D-Bus introspection information for the D-Bus interface
  55  * implemented by @interface_.
  56  *
  57  * Returns: (transfer none): A #GDBusInterfaceInfo. Do not free.
  58  *
  59  * Since: 2.30
  60  */
  61 GDBusInterfaceInfo *
  62 g_dbus_interface_get_info (GDBusInterface *interface_)
  63 {
  64   g_return_val_if_fail (G_IS_DBUS_INTERFACE (interface_), NULL);
  65   return G_DBUS_INTERFACE_GET_IFACE (interface_)->get_info (interface_);
  66 }
  67
  68 /**
  69  * g_dbus_interface_get_object: (skip)
  70  * @interface_: An exported D-Bus interface.
  71  *
  72  * Gets the #GDBusObject that @interface_ belongs to, if any.
  73  *
  74  * <warning>It is not safe to use the returned object if @interface_
  75  * or the returned object is being used from other threads. See
  76  * g_dbus_interface_dup_object() for a thread-safe
  77  * alternative.</warning>
  78  *
  79  * Returns: (transfer none): A #GDBusObject or %NULL. The returned
  80  * reference belongs to @interface_ and should not be freed.
  81  *
  82  * Since: 2.30
  83  */
  84 GDBusObject *
  85 g_dbus_interface_get_object (GDBusInterface *interface_)
  86 {
  87   g_return_val_if_fail (G_IS_DBUS_INTERFACE (interface_), NULL);
  88   return G_DBUS_INTERFACE_GET_IFACE (interface_)->get_object (interface_);
  89 }
  90
  91 /**
  92  * g_dbus_interface_dup_object:
  93  * @interface_: An exported D-Bus interface.
  94  *
  95  * Gets the #GDBusObject that @interface_ belongs to, if any.
  96  *
  97  * Returns: (transfer full): A #GDBusObject or %NULL. The returned
  98  * reference should be freed with g_object_unref().
  99  *
 100  * Since: 2.32
 101  *
 102  * Rename to: g_dbus_interface_get_object
 103  */
 104 GDBusObject *
 105 g_dbus_interface_dup_object (GDBusInterface *interface_)
 106 {
 107   GDBusObject *ret;
 108   g_return_val_if_fail (G_IS_DBUS_INTERFACE (interface_), NULL);
 109   if (G_LIKELY (G_DBUS_INTERFACE_GET_IFACE (interface_)->dup_object != NULL))
 110     {
 111       ret = G_DBUS_INTERFACE_GET_IFACE (interface_)->dup_object (interface_);
 112     }
 113   else
 114     {
 115       g_warning ("No dup_object() vfunc on type %s - using get_object() in a way that is not thread-safe.",
 116                  g_type_name_from_instance ((GTypeInstance *) interface_));
 117       ret = G_DBUS_INTERFACE_GET_IFACE (interface_)->get_object (interface_);
 118       if (ret != NULL)
 119         g_object_ref (ret);
 120     }
 121   return ret;
 122 }
 123
 124 /**
 125  * g_dbus_interface_set_object:
 126  * @interface_: An exported D-Bus interface.
 127  * @object: (allow-none): A #GDBusObject or %NULL.
 128  *
 129  * Sets the #GDBusObject for @interface_ to @object.
 130  *
 131  * Note that @interface_ will hold a weak reference to @object.
 132  *
 133  * Since: 2.30
 134  */
 135 void
 136 g_dbus_interface_set_object (GDBusInterface    *interface_,
 137                              GDBusObject       *object)
 138 {
 139   g_return_if_fail (G_IS_DBUS_INTERFACE (interface_));
 140   g_return_if_fail (object == NULL || G_IS_DBUS_OBJECT (object));
 141   G_DBUS_INTERFACE_GET_IFACE (interface_)->set_object (interface_, object);
 142 }