libspi/relation.c

   1 /*
   2  * AT-SPI - Assistive Technology Service Provider Interface
   3  * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
   4  *
   5  * Copyright 2001 Sun Microsystems Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 /* relation.c : implements the Relation interface */
  24
  25 #include <config.h>
  26 #include <stdio.h>
  27 #include <libspi/relation.h>
  28
  29
  30 static gboolean
  31 spi_init_relation_type_table (Accessibility_RelationType *types)
  32 {
  33   gint i;
  34
  35   for (i = 0; i < ATK_RELATION_LAST_DEFINED; i++)
  36     types[i] = ATK_RELATION_NULL;
  37
  38   types[ATK_RELATION_CONTROLLED_BY] = Accessibility_RELATION_CONTROLLED_BY;
  39   types[ATK_RELATION_CONTROLLER_FOR] = Accessibility_RELATION_CONTROLLER_FOR;
  40   types[ATK_RELATION_LABEL_FOR] = Accessibility_RELATION_LABEL_FOR;
  41   types[ATK_RELATION_LABELLED_BY] = Accessibility_RELATION_LABELLED_BY;
  42   types[ATK_RELATION_MEMBER_OF] = Accessibility_RELATION_MEMBER_OF;
  43   types[ATK_RELATION_NODE_CHILD_OF] = Accessibility_RELATION_NODE_CHILD_OF;
  44   return TRUE;
  45 }
  46
  47
  48
  49 static Accessibility_RelationType
  50 spi_relation_type_from_atk_relation_type (AtkRelationType type)
  51 {
  52   static gboolean is_initialized = FALSE;
  53   static Accessibility_RelationType spi_relation_type_table [ATK_RELATION_LAST_DEFINED];
  54   Accessibility_RelationType spi_type;
  55
  56   if (!is_initialized)
  57     is_initialized = spi_init_relation_type_table (spi_relation_type_table);
  58
  59   if (type > ATK_RELATION_NULL && type < ATK_RELATION_LAST_DEFINED)
  60     spi_type = spi_relation_type_table[type];
  61   else
  62     spi_type = Accessibility_RELATION_EXTENDED;
  63   return spi_type;
  64 }
  65
  66
  67
  68 static AtkRelation *
  69 get_relation_from_servant (PortableServer_Servant servant)
  70 {
  71   SpiBase *base = SPI_BASE (bonobo_object_from_servant(servant));
  72
  73   g_return_val_if_fail (base, NULL);
  74   return  ATK_RELATION(base->gobj);
  75 }
  76
  77
  78
  79 static Accessibility_RelationType
  80 impl_getRelationType (PortableServer_Servant servant,
  81                       CORBA_Environment * ev)
  82 {
  83   AtkRelation *relation = get_relation_from_servant (servant);
  84   AtkRelationType type;
  85
  86   g_return_val_if_fail (relation, 0);
  87   type = atk_relation_get_relation_type (relation);
  88   return spi_relation_type_from_atk_relation_type (type);
  89 }
  90
  91
  92
  93 static CORBA_short
  94 impl_getNTargets (PortableServer_Servant servant,
  95                   CORBA_Environment * ev)
  96 {
  97   AtkRelation *relation = get_relation_from_servant(servant);
  98   g_return_val_if_fail (relation, 0);
  99 }
 100
 101
 102
 103 static CORBA_Object
 104 impl_getTarget (PortableServer_Servant servant,
 105                 const CORBA_short index,
 106                 CORBA_Environment * ev)
 107 {
 108   AtkRelation *relation = get_relation_from_servant (servant);
 109   g_return_val_if_fail (relation, NULL);
 110 }
 111
 112
 113
 114 SpiRelation *
 115 spi_relation_new (AtkRelation *obj)
 116 {
 117   SpiRelation *new_relation = g_object_new (SPI_RELATION_TYPE, NULL);
 118   spi_base_construct (SPI_BASE (new_relation), G_OBJECT (obj));
 119   return new_relation;
 120 }
 121
 122
 123 static void
 124 spi_relation_class_init (SpiRelationClass *klass)
 125 {
 126   POA_Accessibility_Relation__epv *epv = &klass->epv;
 127
 128   epv->getRelationType  = impl_getRelationType;
 129   epv->getNTargets      = impl_getNTargets;
 130   epv->getTarget        = impl_getTarget;
 131 }
 132
 133
 134 static void
 135 spi_relation_init (SpiRelation *relation)
 136 {
 137 }
 138
 139
 140 BONOBO_TYPE_FUNC_FULL (SpiRelation,
 141                        Accessibility_Relation,
 142                        SPI_TYPE_BASE,
 143                        spi_relation);