atk-adaptor/relation-adaptor.c

   1 /*
   2  * AT-SPI - Assistive Technology Service Provider Interface
   3  * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
   4  *
   5  * Copyright 2001, 2002 Sun Microsystems Inc.,
   6  * Copyright 2001, 2002 Ximian, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Library General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Library General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Library General Public
  19  * License along with this library; if not, write to the
  20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21  * Boston, MA 02111-1307, USA.
  22  */
  23
  24 /* relation.c : implements the Relation interface */
  25
  26 #include <config.h>
  27 #include <stdio.h>
  28
  29 #include <atk/atk.h>
  30 #include <droute/droute.h>
  31
  32 #include "common/spi-types.h"
  33 #include "common/spi-dbus.h"
  34
  35 static gboolean
  36 spi_init_relation_type_table (Accessibility_RelationType * types)
  37 {
  38   gint i;
  39
  40   for (i = 0; i < ATK_RELATION_LAST_DEFINED; i++)
  41     types[i] = Accessibility_RELATION_NULL;
  42
  43   types[ATK_RELATION_CONTROLLED_BY] = Accessibility_RELATION_CONTROLLED_BY;
  44   types[ATK_RELATION_CONTROLLER_FOR] = Accessibility_RELATION_CONTROLLER_FOR;
  45   types[ATK_RELATION_LABEL_FOR] = Accessibility_RELATION_LABEL_FOR;
  46   types[ATK_RELATION_LABELLED_BY] = Accessibility_RELATION_LABELLED_BY;
  47   types[ATK_RELATION_MEMBER_OF] = Accessibility_RELATION_MEMBER_OF;
  48   types[ATK_RELATION_NODE_CHILD_OF] = Accessibility_RELATION_NODE_CHILD_OF;
  49   types[ATK_RELATION_NODE_PARENT_OF] = Accessibility_RELATION_NODE_PARENT_OF;
  50   types[ATK_RELATION_FLOWS_TO] = Accessibility_RELATION_FLOWS_TO;
  51   types[ATK_RELATION_FLOWS_FROM] = Accessibility_RELATION_FLOWS_FROM;
  52   types[ATK_RELATION_SUBWINDOW_OF] = Accessibility_RELATION_SUBWINDOW_OF;
  53   types[ATK_RELATION_EMBEDS] = Accessibility_RELATION_EMBEDS;
  54   types[ATK_RELATION_EMBEDDED_BY] = Accessibility_RELATION_EMBEDDED_BY;
  55   types[ATK_RELATION_POPUP_FOR] = Accessibility_RELATION_POPUP_FOR;
  56   types[ATK_RELATION_PARENT_WINDOW_OF] =
  57     Accessibility_RELATION_PARENT_WINDOW_OF;
  58   types[ATK_RELATION_DESCRIPTION_FOR] =
  59     Accessibility_RELATION_DESCRIPTION_FOR;
  60   types[ATK_RELATION_DESCRIBED_BY] = Accessibility_RELATION_DESCRIBED_BY;
  61
  62   return TRUE;
  63 }
  64
  65
  66
  67 static Accessibility_RelationType
  68 spi_relation_type_from_atk_relation_type (AtkRelationType type)
  69 {
  70   static gboolean is_initialized = FALSE;
  71   static Accessibility_RelationType
  72     spi_relation_type_table[ATK_RELATION_LAST_DEFINED];
  73   Accessibility_RelationType spi_type;
  74
  75   if (!is_initialized)
  76     is_initialized = spi_init_relation_type_table (spi_relation_type_table);
  77
  78   if (type > ATK_RELATION_NULL && type < ATK_RELATION_LAST_DEFINED)
  79     spi_type = spi_relation_type_table[type];
  80   else
  81     spi_type = Accessibility_RELATION_EXTENDED;
  82   return spi_type;
  83 }
  84
  85
  86
  87 static AtkRelation *
  88 get_relation_from_servant (PortableServer_Servant servant)
  89 {
  90   SpiBase *base = SPI_BASE (bonobo_object_from_servant (servant));
  91
  92   g_return_val_if_fail (base, NULL);
  93   return ATK_RELATION (base->gobj);
  94 }
  95
  96
  97
  98 static Accessibility_RelationType
  99 impl_getRelationType (PortableServer_Servant servant, CORBA_Environment * ev)
 100 {
 101   AtkRelation *relation = get_relation_from_servant (servant);
 102   AtkRelationType type;
 103
 104   g_return_val_if_fail (relation != NULL, 0);
 105   type = atk_relation_get_relation_type (relation);
 106   return spi_relation_type_from_atk_relation_type (type);
 107 }
 108
 109
 110 static CORBA_short
 111 impl_getNTargets (PortableServer_Servant servant, CORBA_Environment * ev)
 112 {
 113   AtkRelation *relation = get_relation_from_servant (servant);
 114   g_return_val_if_fail (relation != NULL, 0);
 115
 116   return relation->target ? relation->target->len : 0;
 117 }
 118
 119
 120 static CORBA_Object
 121 impl_getTarget (PortableServer_Servant servant,
 122                 const CORBA_short index, CORBA_Environment * ev)
 123 {
 124   AtkObject *atk_object;
 125   AtkRelation *relation = get_relation_from_servant (servant);
 126   g_return_val_if_fail (relation, NULL);
 127
 128   if (!relation->target || index < 0 || index >= relation->target->len)
 129     return CORBA_OBJECT_NIL;
 130
 131   atk_object = g_ptr_array_index (relation->target, index);
 132   if (!atk_object)
 133     return CORBA_OBJECT_NIL;
 134
 135   return spi_accessible_new_return (atk_object, FALSE, ev);
 136 }
 137
 138
 139 SpiRelation *
 140 spi_relation_new (AtkRelation * obj)
 141 {
 142   SpiRelation *new_relation = g_object_new (SPI_RELATION_TYPE, NULL);
 143   spi_base_construct (SPI_BASE (new_relation), G_OBJECT (obj));
 144   return new_relation;
 145 }
 146
 147
 148 static void
 149 spi_relation_class_init (SpiRelationClass * klass)
 150 {
 151   POA_Accessibility_Relation__epv *epv = &klass->epv;
 152
 153   epv->getRelationType = impl_getRelationType;
 154   epv->getNTargets = impl_getNTargets;
 155   epv->getTarget = impl_getTarget;
 156 }
 157
 158
 159 static void
 160 spi_relation_init (SpiRelation * relation)
 161 {
 162 }
 163
 164
 165 BONOBO_TYPE_FUNC_FULL (SpiRelation,
 166                        Accessibility_Relation, SPI_TYPE_BASE, spi_relation)