atk/atknoopobject.c

   1 /* ATK -  Accessibility Toolkit
   2  * Copyright 2001 Sun Microsystems Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "atk.h"
  21 #include "atknoopobject.h"
  22
  23 static void atk_no_op_object_class_init (AtkNoOpObjectClass *klass);
  24
  25 static gpointer parent_class = NULL;
  26
  27
  28 GType
  29 atk_no_op_object_get_type (void)
  30 {
  31   static GType type = 0;
  32
  33   if (!type)
  34   {
  35     static const GTypeInfo tinfo =
  36     {
  37       sizeof (AtkObjectClass),
  38       (GBaseInitFunc) NULL, /* base init */
  39       (GBaseFinalizeFunc) NULL, /* base finalize */
  40       (GClassInitFunc) atk_no_op_object_class_init, /* class init */
  41       (GClassFinalizeFunc) NULL, /* class finalize */
  42       NULL, /* class data */
  43       sizeof (AtkNoOpObject), /* instance size */
  44       0, /* nb preallocs */
  45       (GInstanceInitFunc) NULL, /* instance init */
  46       NULL /* value table */
  47     };
  48
  49     static const GInterfaceInfo atk_component_info =
  50     {
  51         (GInterfaceInitFunc) NULL,
  52         (GInterfaceFinalizeFunc) NULL,
  53         NULL
  54     };
  55
  56     static const GInterfaceInfo atk_action_info =
  57     {
  58         (GInterfaceInitFunc) NULL,
  59         (GInterfaceFinalizeFunc) NULL,
  60         NULL
  61     };
  62
  63     static const GInterfaceInfo atk_editable_text_info =
  64     {
  65         (GInterfaceInitFunc) NULL,
  66         (GInterfaceFinalizeFunc) NULL,
  67         NULL
  68     };
  69
  70     static const GInterfaceInfo atk_image_info =
  71     {
  72         (GInterfaceInitFunc) NULL,
  73         (GInterfaceFinalizeFunc) NULL,
  74         NULL
  75     };
  76
  77     static const GInterfaceInfo atk_selection_info =
  78     {
  79         (GInterfaceInitFunc) NULL,
  80         (GInterfaceFinalizeFunc) NULL,
  81         NULL
  82     };
  83
  84     static const GInterfaceInfo atk_table_info =
  85     {
  86         (GInterfaceInitFunc) NULL,
  87         (GInterfaceFinalizeFunc) NULL,
  88         NULL
  89     };
  90
  91     static const GInterfaceInfo atk_text_info =
  92     {
  93         (GInterfaceInitFunc) NULL,
  94         (GInterfaceFinalizeFunc) NULL,
  95         NULL
  96     };
  97
  98     static const GInterfaceInfo atk_value_info =
  99     {
 100         (GInterfaceInitFunc) NULL,
 101         (GInterfaceFinalizeFunc) NULL,
 102         NULL
 103     };
 104
 105
 106     type = g_type_register_static (ATK_TYPE_OBJECT,
 107                                     "AtkNoOpObject", &tinfo, 0);
 108     g_type_add_interface_static (type, ATK_TYPE_COMPONENT,
 109                                  &atk_component_info);
 110     g_type_add_interface_static (type, ATK_TYPE_ACTION,
 111                                  &atk_action_info);
 112     g_type_add_interface_static (type, ATK_TYPE_EDITABLE_TEXT,
 113                                  &atk_editable_text_info);
 114     g_type_add_interface_static (type, ATK_TYPE_IMAGE,
 115                                  &atk_image_info);
 116     g_type_add_interface_static (type, ATK_TYPE_SELECTION,
 117                                  &atk_selection_info);
 118     g_type_add_interface_static (type, ATK_TYPE_TABLE,
 119                                  &atk_table_info);
 120     g_type_add_interface_static (type, ATK_TYPE_TEXT,
 121                                  &atk_text_info);
 122     g_type_add_interface_static (type, ATK_TYPE_VALUE,
 123                                  &atk_value_info);
 124   }
 125   return type;
 126 }
 127
 128 static void
 129 atk_no_op_object_class_init (AtkNoOpObjectClass *klass)
 130 {
 131   parent_class = g_type_class_peek_parent (klass);
 132 }
 133
 134 /**
 135  * atk_no_op_object_new:
 136  * @obj: a #GObject
 137  *
 138  * Provides a default (non-functioning stub) #AtkObject.
 139  * Application maintainers should not use this method.
 140  *
 141  * Returns: a default (non-functioning stub) #AtkObject
 142  **/
 143 AtkObject*
 144 atk_no_op_object_new (GObject *obj)
 145 {
 146   AtkObject *accessible;
 147
 148   g_return_val_if_fail (obj != NULL, NULL);
 149
 150   accessible = g_object_new (ATK_TYPE_NO_OP_OBJECT, NULL);
 151   g_return_val_if_fail (accessible != NULL, NULL);
 152
 153   accessible->role = ATK_ROLE_INVALID;
 154   accessible->layer = ATK_LAYER_INVALID;
 155
 156   return accessible;
 157 }
 158