atk/atkobject.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 <string.h>
  21 #include <locale.h>
  22
  23 #include <glib-object.h>
  24
  25 #ifdef G_OS_WIN32
  26 #define STRICT
  27 #include <windows.h>
  28 #undef STRICT
  29 #undef FOCUS_EVENT              /* <windows.h> pollutes the namespace
  30                                  * like a six hundred pound gorilla */
  31 #endif
  32
  33 #include "atk.h"
  34 #include "atkmarshal.h"
  35 #include "atk-enum-types.h"
  36 #include "atkintl.h"
  37
  38 /**
  39  * SECTION:atkobject
  40  * @Short_description: The base object class for the Accessibility Toolkit API.
  41  * @Title:AtkObject
  42  *
  43  * This class is the primary class for accessibility support via the
  44  * Accessibility ToolKit (ATK).  Objects which are instances of
  45  * #AtkObject (or instances of AtkObject-derived types) are queried
  46  * for properties which relate basic (and generic) properties of a UI
  47  * component such as name and description.  Instances of #AtkObject
  48  * may also be queried as to whether they implement other ATK
  49  * interfaces (e.g. #AtkAction, #AtkComponent, etc.), as appropriate
  50  * to the role which a given UI component plays in a user interface.
  51  *
  52  * All UI components in an application which provide useful
  53  * information or services to the user must provide corresponding
  54  * #AtkObject instances on request (in GTK+, for instance, usually on
  55  * a call to #gtk_widget_get_accessible ()), either via ATK support
  56  * built into the toolkit for the widget class or ancestor class, or
  57  * in the case of custom widgets, if the inherited #AtkObject
  58  * implementation is insufficient, via instances of a new #AtkObject
  59  * subclass.
  60  *
  61  * See also: #AtkObjectFactory, #AtkRegistry.  (GTK+ users see also
  62  * #GtkAccessible).
  63  *
  64  */
  65
  66 static GPtrArray *role_names = NULL;
  67
  68 enum
  69 {
  70   PROP_0,  /* gobject convention */
  71
  72   PROP_NAME,
  73   PROP_DESCRIPTION,
  74   PROP_PARENT,      /* ancestry has changed */
  75   PROP_VALUE,
  76   PROP_ROLE,
  77   PROP_LAYER,
  78   PROP_MDI_ZORDER,
  79   PROP_TABLE_CAPTION,
  80   PROP_TABLE_COLUMN_DESCRIPTION,
  81   PROP_TABLE_COLUMN_HEADER,
  82   PROP_TABLE_ROW_DESCRIPTION,
  83   PROP_TABLE_ROW_HEADER,
  84   PROP_TABLE_SUMMARY,
  85   PROP_TABLE_CAPTION_OBJECT,
  86   PROP_HYPERTEXT_NUM_LINKS,
  87   PROP_LAST         /* gobject convention */
  88 };
  89
  90 enum {
  91   CHILDREN_CHANGED,
  92   FOCUS_EVENT,
  93   PROPERTY_CHANGE,
  94   STATE_CHANGE,
  95   VISIBLE_DATA_CHANGED,
  96   ACTIVE_DESCENDANT_CHANGED,
  97
  98   LAST_SIGNAL
  99 };
 100
 101 /* These are listed here for extraction by intltool */
 102 #if 0
 103   N_("invalid")
 104   N_("accelerator label")
 105   N_("alert")
 106   N_("animation")
 107   N_("arrow")
 108   N_("calendar")
 109   N_("canvas")
 110   N_("check box")
 111   N_("check menu item")
 112   N_("color chooser")
 113   N_("column header")
 114   N_("combo box")
 115   N_("dateeditor")
 116   N_("desktop icon")
 117   N_("desktop frame")
 118   N_("dial")
 119   N_("dialog")
 120   N_("directory pane")
 121   N_("drawing area")
 122   N_("file chooser")
 123   N_("filler")
 124   /* I know it looks wrong but that is what Java returns */
 125   N_("fontchooser")
 126   N_("frame")
 127   N_("glass pane")
 128   N_("html container")
 129   N_("icon")
 130   N_("image")
 131   N_("internal frame")
 132   N_("label")
 133   N_("layered pane")
 134   N_("list")
 135   N_("list item")
 136   N_("menu")
 137   N_("menu bar")
 138   N_("menu item")
 139   N_("option pane")
 140   N_("page tab")
 141   N_("page tab list")
 142   N_("panel")
 143   N_("password text")
 144   N_("popup menu")
 145   N_("progress bar")
 146   N_("push button")
 147   N_("radio button")
 148   N_("radio menu item")
 149   N_("root pane")
 150   N_("row header")
 151   N_("scroll bar")
 152   N_("scroll pane")
 153   N_("separator")
 154   N_("slider")
 155   N_("split pane")
 156   N_("spin button")
 157   N_("statusbar")
 158   N_("table")
 159   N_("table cell")
 160   N_("table column header")
 161   N_("table row header")
 162   N_("tear off menu item")
 163   N_("terminal")
 164   N_("text")
 165   N_("toggle button")
 166   N_("tool bar")
 167   N_("tool tip")
 168   N_("tree")
 169   N_("tree table")
 170   N_("unknown")
 171   N_("viewport")
 172   N_("window")
 173   N_("header")
 174   N_("footer")
 175   N_("paragraph")
 176   N_("ruler")
 177   N_("application")
 178   N_("autocomplete")
 179   N_("edit bar")
 180   N_("embedded component")
 181   N_("entry")
 182   N_("chart")
 183   N_("caption")
 184   N_("document frame")
 185   N_("heading")
 186   N_("page")
 187   N_("section")
 188   N_("redundant object")
 189   N_("form")
 190   N_("link")
 191   N_("input method window")
 192   N_("table row")
 193   N_("tree item")
 194   N_("document spreadsheet")
 195   N_("document presentation")
 196   N_("document text")
 197   N_("document web")
 198   N_("document email")
 199   N_("comment")
 200   N_("list box")
 201   N_("grouping")
 202   N_("image map")
 203   N_("notification")
 204   N_("info bar")
 205   N_("level bar")
 206   N_("title bar")
 207   N_("block quote")
 208   N_("audio")
 209   N_("video")
 210 #endif /* 0 */
 211
 212 static void            atk_object_class_init        (AtkObjectClass  *klass);
 213 static void            atk_object_init              (AtkObject       *accessible,
 214                                                      AtkObjectClass  *klass);
 215 static AtkRelationSet* atk_object_real_ref_relation_set
 216                                                     (AtkObject       *accessible);
 217 static void            atk_object_real_initialize   (AtkObject       *accessible,
 218                                                      gpointer        data);
 219 static void            atk_object_real_set_property (GObject         *object,
 220                                                      guint            prop_id,
 221                                                      const GValue    *value,
 222                                                      GParamSpec      *pspec);
 223 static void            atk_object_real_get_property (GObject         *object,
 224                                                      guint            prop_id,
 225                                                      GValue          *value,
 226                                                      GParamSpec      *pspec);
 227 static void            atk_object_finalize          (GObject         *object);
 228 static const gchar*    atk_object_real_get_name     (AtkObject       *object);
 229 static const gchar*    atk_object_real_get_description
 230                                                    (AtkObject       *object);
 231 static AtkObject*      atk_object_real_get_parent  (AtkObject       *object);
 232 static AtkRole         atk_object_real_get_role    (AtkObject       *object);
 233 static AtkLayer        atk_object_real_get_layer   (AtkObject       *object);
 234 static AtkStateSet*    atk_object_real_ref_state_set
 235                                                    (AtkObject       *object);
 236 static void            atk_object_real_set_name    (AtkObject       *object,
 237                                                     const gchar     *name);
 238 static void            atk_object_real_set_description
 239                                                    (AtkObject       *object,
 240                                                     const gchar     *description);
 241 static void            atk_object_real_set_parent  (AtkObject       *object,
 242                                                     AtkObject       *parent);
 243 static void            atk_object_real_set_role    (AtkObject       *object,
 244                                                     AtkRole         role);
 245 static void            atk_object_notify           (GObject         *obj,
 246                                                     GParamSpec      *pspec);
 247 static const gchar*    atk_object_real_get_object_locale
 248                                                    (AtkObject       *object);
 249
 250 static guint atk_object_signals[LAST_SIGNAL] = { 0, };
 251
 252 static gpointer parent_class = NULL;
 253
 254 static const gchar* const atk_object_name_property_name = "accessible-name";
 255 static const gchar* const atk_object_name_property_description = "accessible-description";
 256 static const gchar* const atk_object_name_property_parent = "accessible-parent";
 257 static const gchar* const atk_object_name_property_value = "accessible-value";
 258 static const gchar* const atk_object_name_property_role = "accessible-role";
 259 static const gchar* const atk_object_name_property_component_layer = "accessible-component-layer";
 260 static const gchar* const atk_object_name_property_component_mdi_zorder = "accessible-component-mdi-zorder";
 261 static const gchar* const atk_object_name_property_table_caption = "accessible-table-caption";
 262 static const gchar* const atk_object_name_property_table_column_description = "accessible-table-column-description";
 263 static const gchar* const atk_object_name_property_table_column_header = "accessible-table-column-header";
 264 static const gchar* const atk_object_name_property_table_row_description = "accessible-table-row-description";
 265 static const gchar* const atk_object_name_property_table_row_header = "accessible-table-row-header";
 266 static const gchar* const atk_object_name_property_table_summary = "accessible-table-summary";
 267 static const gchar* const atk_object_name_property_table_caption_object = "accessible-table-caption-object";
 268 static const gchar* const atk_object_name_property_hypertext_num_links = "accessible-hypertext-nlinks";
 269
 270 #ifdef G_OS_WIN32
 271
 272 static HMODULE atk_dll;
 273
 274 BOOL WINAPI
 275 DllMain (HINSTANCE hinstDLL,
 276          DWORD     fdwReason,
 277          LPVOID    lpvReserved)
 278 {
 279   switch (fdwReason)
 280     {
 281     case DLL_PROCESS_ATTACH:
 282       atk_dll = (HMODULE) hinstDLL;
 283       break;
 284     }
 285
 286   return TRUE;
 287 }
 288
 289 static const char *
 290 get_atk_locale_dir (void)
 291 {
 292   static gchar *atk_localedir = NULL;
 293
 294   if (!atk_localedir)
 295     {
 296       const gchar *p;
 297       gchar *root, *temp;
 298
 299       /* ATK_LOCALEDIR might end in either /lib/locale or
 300        * /share/locale. Scan for that slash.
 301        */
 302       p = ATK_LOCALEDIR + strlen (ATK_LOCALEDIR);
 303       while (*--p != '/')
 304         ;
 305       while (*--p != '/')
 306         ;
 307
 308       root = g_win32_get_package_installation_directory_of_module (atk_dll);
 309       temp = g_build_filename (root, p, NULL);
 310       g_free (root);
 311
 312       /* atk_localedir is passed to bindtextdomain() which isn't
 313        * UTF-8-aware.
 314        */
 315       atk_localedir = g_win32_locale_filename_from_utf8 (temp);
 316       g_free (temp);
 317     }
 318   return atk_localedir;
 319 }
 320
 321 #undef ATK_LOCALEDIR
 322
 323 #define ATK_LOCALEDIR get_atk_locale_dir()
 324
 325 #endif
 326
 327 static void
 328 gettext_initialization (void)
 329 {
 330 #ifdef ENABLE_NLS
 331   static gboolean gettext_initialized = FALSE;
 332
 333   if (!gettext_initialized)
 334     {
 335       const char *dir = g_getenv ("ATK_ALT_LOCALEDIR");
 336
 337       gettext_initialized = TRUE;
 338       if (dir == NULL)
 339         dir = ATK_LOCALEDIR;
 340
 341       bindtextdomain (GETTEXT_PACKAGE, dir);
 342 #ifdef HAVE_BIND_TEXTDOMAIN_CODESET
 343       bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
 344 #endif
 345     }
 346 #endif
 347 }
 348
 349 static void
 350 compact_role_name (gchar *role_name)
 351 {
 352   gchar *p = role_name;
 353
 354   while (*p)
 355     {
 356       if (*p == '-')
 357         *p = ' ';
 358       p++;
 359     }
 360 }
 361
 362 static void
 363 initialize_role_names ()
 364 {
 365   GTypeClass *enum_class;
 366   GEnumValue *enum_value;
 367   int i;
 368   gchar *role_name = NULL;
 369
 370   if (role_names)
 371     return;
 372
 373   role_names = g_ptr_array_new ();
 374   enum_class = g_type_class_ref (ATK_TYPE_ROLE);
 375   if (!G_IS_ENUM_CLASS(enum_class))
 376     return;
 377
 378   for (i = 0; i < ATK_ROLE_LAST_DEFINED; i++)
 379     {
 380       enum_value = g_enum_get_value (G_ENUM_CLASS (enum_class), i);
 381       role_name = g_strdup (enum_value->value_nick);
 382       // We want the role names to be in the format "check button" and not "check-button"
 383       compact_role_name (role_name);
 384       g_ptr_array_add (role_names, role_name);
 385     }
 386
 387   g_type_class_unref (enum_class);
 388
 389 }
 390
 391 GType
 392 atk_object_get_type (void)
 393 {
 394   static GType type = 0;
 395
 396   if (!type)
 397     {
 398       static const GTypeInfo typeInfo =
 399       {
 400         sizeof (AtkObjectClass),
 401         (GBaseInitFunc) NULL,
 402         (GBaseFinalizeFunc) NULL,
 403         (GClassInitFunc) atk_object_class_init,
 404         (GClassFinalizeFunc) NULL,
 405         NULL,
 406         sizeof (AtkObject),
 407         0,
 408         (GInstanceInitFunc) atk_object_init,
 409       } ;
 410       type = g_type_register_static (G_TYPE_OBJECT, "AtkObject", &typeInfo, 0) ;
 411     }
 412   return type;
 413 }
 414
 415 static void
 416 atk_object_class_init (AtkObjectClass *klass)
 417 {
 418   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 419
 420   parent_class = g_type_class_peek_parent (klass);
 421
 422   gobject_class->set_property = atk_object_real_set_property;
 423   gobject_class->get_property = atk_object_real_get_property;
 424   gobject_class->finalize = atk_object_finalize;
 425   gobject_class->notify = atk_object_notify;
 426
 427   klass->get_name = atk_object_real_get_name;
 428   klass->get_description = atk_object_real_get_description;
 429   klass->get_parent = atk_object_real_get_parent;
 430   klass->get_n_children = NULL;
 431   klass->ref_child = NULL;
 432   klass->get_index_in_parent = NULL;
 433   klass->ref_relation_set = atk_object_real_ref_relation_set;
 434   klass->get_role = atk_object_real_get_role;
 435   klass->get_layer = atk_object_real_get_layer;
 436   klass->get_mdi_zorder = NULL;
 437   klass->initialize = atk_object_real_initialize;
 438   klass->ref_state_set = atk_object_real_ref_state_set;
 439   klass->set_name = atk_object_real_set_name;
 440   klass->set_description = atk_object_real_set_description;
 441   klass->set_parent = atk_object_real_set_parent;
 442   klass->set_role = atk_object_real_set_role;
 443   klass->get_object_locale = atk_object_real_get_object_locale;
 444
 445   /*
 446    * We do not define default signal handlers here
 447    */
 448   klass->children_changed = NULL;
 449   klass->focus_event = NULL;
 450   klass->property_change = NULL;
 451   klass->visible_data_changed = NULL;
 452   klass->active_descendant_changed = NULL;
 453
 454   gettext_initialization ();
 455
 456   g_object_class_install_property (gobject_class,
 457                                    PROP_NAME,
 458                                    g_param_spec_string (atk_object_name_property_name,
 459                                                         _("Accessible Name"),
 460                                                         _("Object instance\'s name formatted for assistive technology access"),
 461                                                         NULL,
 462                                                         G_PARAM_READWRITE));
 463   g_object_class_install_property (gobject_class,
 464                                    PROP_DESCRIPTION,
 465                                    g_param_spec_string (atk_object_name_property_description,
 466                                                         _("Accessible Description"),
 467                                                         _("Description of an object, formatted for assistive technology access"),
 468                                                         NULL,
 469                                                         G_PARAM_READWRITE));
 470   g_object_class_install_property (gobject_class,
 471                                    PROP_PARENT,
 472                                    g_param_spec_object (atk_object_name_property_parent,
 473                                                         _("Accessible Parent"),
 474                                                         _("Parent of the current accessible as returned by atk_object_get_parent()"),
 475                                                         ATK_TYPE_OBJECT,
 476                                                         G_PARAM_READWRITE));
 477   g_object_class_install_property (gobject_class,
 478                                    PROP_VALUE,
 479                                    g_param_spec_double (atk_object_name_property_value,
 480                                                         _("Accessible Value"),
 481                                                         _("Is used to notify that the value has changed"),
 482                                                         0.0,
 483                                                         G_MAXDOUBLE,
 484                                                         0.0,
 485                                                         G_PARAM_READWRITE));
 486   g_object_class_install_property (gobject_class,
 487                                    PROP_ROLE,
 488                                    g_param_spec_int    (atk_object_name_property_role,
 489                                                         _("Accessible Role"),
 490                                                         _("The accessible role of this object"),
 491                                                         0,
 492                                                         G_MAXINT,
 493                                                         ATK_ROLE_UNKNOWN,
 494                                                         G_PARAM_READWRITE));
 495   g_object_class_install_property (gobject_class,
 496                                    PROP_LAYER,
 497                                    g_param_spec_int    (atk_object_name_property_component_layer,
 498                                                         _("Accessible Layer"),
 499                                                         _("The accessible layer of this object"),
 500                                                         0,
 501                                                         G_MAXINT,
 502                                                         0,
 503                                                         G_PARAM_READABLE));
 504   g_object_class_install_property (gobject_class,
 505                                    PROP_MDI_ZORDER,
 506                                    g_param_spec_int    (atk_object_name_property_component_mdi_zorder,
 507                                                         _("Accessible MDI Value"),
 508                                                         _("The accessible MDI value of this object"),
 509                                                         G_MININT,
 510                                                         G_MAXINT,
 511                                                         G_MININT,
 512                                                         G_PARAM_READABLE));
 513   g_object_class_install_property (gobject_class,
 514                                    PROP_TABLE_CAPTION,
 515                                    g_param_spec_string (atk_object_name_property_table_caption,
 516                                                         _("Accessible Table Caption"),
 517                                                         _("Is used to notify that the table caption has changed; this property should not be used. accessible-table-caption-object should be used instead"),
 518                                                         NULL,
 519                                                         G_PARAM_READWRITE));
 520   g_object_class_install_property (gobject_class,
 521                                    PROP_TABLE_COLUMN_HEADER,
 522                                    g_param_spec_object (atk_object_name_property_table_column_header,
 523                                                         _("Accessible Table Column Header"),
 524                                                         _("Is used to notify that the table column header has changed"),
 525                                                         ATK_TYPE_OBJECT,
 526                                                         G_PARAM_READWRITE));
 527   g_object_class_install_property (gobject_class,
 528                                    PROP_TABLE_COLUMN_DESCRIPTION,
 529                                    g_param_spec_string (atk_object_name_property_table_column_description,
 530                                                         _("Accessible Table Column Description"),
 531                                                         _("Is used to notify that the table column description has changed"),
 532                                                         NULL,
 533                                                         G_PARAM_READWRITE));
 534   g_object_class_install_property (gobject_class,
 535                                    PROP_TABLE_ROW_HEADER,
 536                                    g_param_spec_object (atk_object_name_property_table_row_header,
 537                                                         _("Accessible Table Row Header"),
 538                                                         _("Is used to notify that the table row header has changed"),
 539                                                         ATK_TYPE_OBJECT,
 540                                                         G_PARAM_READWRITE));
 541   g_object_class_install_property (gobject_class,
 542                                    PROP_TABLE_ROW_DESCRIPTION,
 543                                    g_param_spec_string (atk_object_name_property_table_row_description,
 544                                                         _("Accessible Table Row Description"),
 545                                                         _("Is used to notify that the table row description has changed"),
 546                                                         NULL,
 547                                                         G_PARAM_READWRITE));
 548   g_object_class_install_property (gobject_class,
 549                                    PROP_TABLE_SUMMARY,
 550                                    g_param_spec_object (atk_object_name_property_table_summary,
 551                                                         _("Accessible Table Summary"),
 552                                                         _("Is used to notify that the table summary has changed"),
 553                                                         ATK_TYPE_OBJECT,
 554                                                         G_PARAM_READWRITE));
 555   g_object_class_install_property (gobject_class,
 556                                    PROP_TABLE_CAPTION_OBJECT,
 557                                    g_param_spec_object (atk_object_name_property_table_caption_object,
 558                                                         _("Accessible Table Caption Object"),
 559                                                         _("Is used to notify that the table caption has changed"),
 560                                                         ATK_TYPE_OBJECT,
 561                                                         G_PARAM_READWRITE));
 562   g_object_class_install_property (gobject_class,
 563                                    PROP_HYPERTEXT_NUM_LINKS,
 564                                    g_param_spec_int    (atk_object_name_property_hypertext_num_links,
 565                                                         _("Number of Accessible Hypertext Links"),
 566                                                         _("The number of links which the current AtkHypertext has"),
 567                                                         0,
 568                                                         G_MAXINT,
 569                                                         0,
 570                                                         G_PARAM_READABLE));
 571
 572   /**
 573    * AtkObject::children-changed:
 574    * @atkobject: the object which received the signal.
 575    * @arg1: The index of the added or removed child. The value can be
 576    * -1. This is used if the value is not known by the implementor
 577    * when the child is added/removed or irrelevant.
 578    * @arg2: A gpointer to the child AtkObject which was added or
 579    * removed. If the child was removed, it is possible that it is not
 580    * available for the implementor. In that case this pointer can be
 581    * NULL.
 582    *
 583    * The signal "children-changed" is emitted when a child is added or
 584    * removed form an object. It supports two details: "add" and
 585    * "remove"
 586    */
 587   atk_object_signals[CHILDREN_CHANGED] =
 588     g_signal_new ("children_changed",
 589                   G_TYPE_FROM_CLASS (klass),
 590                   G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
 591                   G_STRUCT_OFFSET (AtkObjectClass, children_changed),
 592                   NULL, NULL,
 593                   g_cclosure_marshal_VOID__UINT_POINTER,
 594                   G_TYPE_NONE,
 595                   2, G_TYPE_UINT, G_TYPE_POINTER);
 596
 597   /**
 598    * AtkObject::focus-event:
 599    * @atkobject: the object which received the signal
 600    * @arg1: a boolean value which indicates whether the object gained
 601    * or lost focus.
 602    *
 603    * The signal "focus-event" is emitted when an object gained or lost
 604    * focus.
 605    *
 606    * Deprecated: Since 2.9.4. Use #AtkObject::state-change signal instead.
 607    */
 608   atk_object_signals[FOCUS_EVENT] =
 609     g_signal_new ("focus_event",
 610                   G_TYPE_FROM_CLASS (klass),
 611                   G_SIGNAL_RUN_LAST,
 612                   G_STRUCT_OFFSET (AtkObjectClass, focus_event),
 613                   NULL, NULL,
 614                   g_cclosure_marshal_VOID__BOOLEAN,
 615                   G_TYPE_NONE,
 616                   1, G_TYPE_BOOLEAN);
 617   /**
 618    * AtkObject::property-change:
 619    * @atkobject: the object which received the signal.
 620    * @arg1: The new value of the property which changed.
 621    *
 622    * The signal "property-change" is emitted when an object's property
 623    * value changes. The detail identifies the name of the property
 624    * whose value has changed.
 625    */
 626   atk_object_signals[PROPERTY_CHANGE] =
 627     g_signal_new ("property_change",
 628                   G_TYPE_FROM_CLASS (klass),
 629                   G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
 630                   G_STRUCT_OFFSET (AtkObjectClass, property_change),
 631                   (GSignalAccumulator) NULL, NULL,
 632                   g_cclosure_marshal_VOID__POINTER,
 633                   G_TYPE_NONE, 1,
 634                   G_TYPE_POINTER);
 635
 636   /**
 637    * AtkObject::state-change:
 638    * @atkobject: the object which received the signal.
 639    * @arg1: The name of the state which has changed
 640    * @arg2: A boolean which indicates whether the state has been set or unset.
 641    *
 642    * The "state-change" signal is emitted when an object's state
 643    * changes.  The detail value identifies the state type which has
 644    * changed.
 645    */
 646   atk_object_signals[STATE_CHANGE] =
 647     g_signal_new ("state_change",
 648                   G_TYPE_FROM_CLASS (klass),
 649                   G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
 650                   G_STRUCT_OFFSET (AtkObjectClass, state_change),
 651                   (GSignalAccumulator) NULL, NULL,
 652                   atk_marshal_VOID__STRING_BOOLEAN,
 653                   G_TYPE_NONE, 2,
 654                   G_TYPE_STRING,
 655                   G_TYPE_BOOLEAN);
 656
 657   /**
 658    * AtkObject::visible-data-changed:
 659    * @atkobject: the object which received the signal.
 660    *
 661    * The "visible-data-changed" signal is emitted when the visual
 662    * appearance of the object changed.
 663    */
 664   atk_object_signals[VISIBLE_DATA_CHANGED] =
 665     g_signal_new ("visible_data_changed",
 666                   G_TYPE_FROM_CLASS (klass),
 667                   G_SIGNAL_RUN_LAST,
 668                   G_STRUCT_OFFSET (AtkObjectClass, visible_data_changed),
 669                   (GSignalAccumulator) NULL, NULL,
 670                   g_cclosure_marshal_VOID__VOID,
 671                   G_TYPE_NONE, 0);
 672
 673   /**
 674    * AtkObject::active-descendant-changed:
 675    * @atkobject: the object which received the signal.
 676    * @arg1: the newly focused object.
 677    *
 678    * The "active-descendant-changed" signal is emitted by an object
 679    * which has the state ATK_STATE_MANAGES_DESCENDANTS when the focus
 680    * object in the object changes. For instance, a table will emit the
 681    * signal when the cell in the table which has focus changes.
 682    */
 683   atk_object_signals[ACTIVE_DESCENDANT_CHANGED] =
 684     g_signal_new ("active_descendant_changed",
 685                   G_TYPE_FROM_CLASS (klass),
 686                   G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
 687                   G_STRUCT_OFFSET (AtkObjectClass, active_descendant_changed),
 688                   NULL, NULL,
 689                   g_cclosure_marshal_VOID__POINTER,
 690                   G_TYPE_NONE,
 691                   1, G_TYPE_POINTER);
 692 }
 693
 694 static void
 695 atk_object_init  (AtkObject        *accessible,
 696                   AtkObjectClass   *klass)
 697 {
 698   accessible->name = NULL;
 699   accessible->description = NULL;
 700   accessible->accessible_parent = NULL;
 701   accessible->relation_set = atk_relation_set_new();
 702   accessible->role = ATK_ROLE_UNKNOWN;
 703 }
 704
 705 GType
 706 atk_implementor_get_type (void)
 707 {
 708   static GType type = 0;
 709
 710   if (!type)
 711     {
 712       static const GTypeInfo typeInfo =
 713       {
 714         sizeof (AtkImplementorIface),
 715         (GBaseInitFunc) NULL,
 716         (GBaseFinalizeFunc) NULL,
 717       } ;
 718
 719       type = g_type_register_static (G_TYPE_INTERFACE, "AtkImplementorIface", &typeInfo, 0) ;
 720     }
 721
 722   return type;
 723 }
 724
 725 /**
 726  * atk_object_get_name:
 727  * @accessible: an #AtkObject
 728  *
 729  * Gets the accessible name of the accessible.
 730  *
 731  * Returns: a character string representing the accessible name of the object.
 732  **/
 733 const gchar*
 734 atk_object_get_name (AtkObject *accessible)
 735 {
 736   AtkObjectClass *klass;
 737
 738   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
 739
 740   klass = ATK_OBJECT_GET_CLASS (accessible);
 741   if (klass->get_name)
 742     return (klass->get_name) (accessible);
 743   else
 744     return NULL;
 745 }
 746
 747 /**
 748  * atk_object_get_description:
 749  * @accessible: an #AtkObject
 750  *
 751  * Gets the accessible description of the accessible.
 752  *
 753  * Returns: a character string representing the accessible description
 754  * of the accessible.
 755  *
 756  **/
 757 const gchar*
 758 atk_object_get_description (AtkObject *accessible)
 759 {
 760   AtkObjectClass *klass;
 761
 762   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
 763
 764   klass = ATK_OBJECT_GET_CLASS (accessible);
 765   if (klass->get_description)
 766     return (klass->get_description) (accessible);
 767   else
 768     return NULL;
 769 }
 770
 771 /**
 772  * atk_object_get_parent:
 773  * @accessible: an #AtkObject
 774  *
 775  * Gets the accessible parent of the accessible. By default this is
 776  * the one assigned with atk_object_set_parent(), but it is assumed
 777  * that ATK implementors have ways to get the parent of the object
 778  * without the need of assigning it manually with
 779  * atk_object_set_parent(), and will return it with this method.
 780  *
 781  * If you are only interested on the parent assigned with
 782  * atk_object_set_parent(), use atk_object_peek_parent().
 783  *
 784  * Returns: (transfer none): an #AtkObject representing the accessible
 785  * parent of the accessible
 786  **/
 787 AtkObject*
 788 atk_object_get_parent (AtkObject *accessible)
 789 {
 790   AtkObjectClass *klass;
 791
 792   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
 793
 794   klass = ATK_OBJECT_GET_CLASS (accessible);
 795   if (klass->get_parent)
 796     return (klass->get_parent) (accessible);
 797   else
 798     return NULL;
 799 }
 800
 801 /**
 802  * atk_object_peek_parent:
 803  * @accessible: an #AtkObject
 804  *
 805  * Gets the accessible parent of the accessible, if it has been
 806  * manually assigned with atk_object_set_parent. Otherwise, this
 807  * function returns %NULL.
 808  *
 809  * This method is intended as an utility for ATK implementors, and not
 810  * to be exposed to accessible tools. See atk_object_get_parent() for
 811  * further reference.
 812  *
 813  * Returns: (transfer none): an #AtkObject representing the accessible
 814  * parent of the accessible if assigned
 815  **/
 816 AtkObject*
 817 atk_object_peek_parent (AtkObject *accessible)
 818 {
 819   return accessible->accessible_parent;
 820 }
 821
 822 /**
 823  * atk_object_get_n_accessible_children:
 824  * @accessible: an #AtkObject
 825  *
 826  * Gets the number of accessible children of the accessible.
 827  *
 828  * Returns: an integer representing the number of accessible children
 829  * of the accessible.
 830  **/
 831 gint
 832 atk_object_get_n_accessible_children (AtkObject *accessible)
 833 {
 834   AtkObjectClass *klass;
 835
 836   g_return_val_if_fail (ATK_IS_OBJECT (accessible), 0);
 837
 838   klass = ATK_OBJECT_GET_CLASS (accessible);
 839   if (klass->get_n_children)
 840     return (klass->get_n_children) (accessible);
 841   else
 842     return 0;
 843 }
 844
 845 /**
 846  * atk_object_ref_accessible_child:
 847  * @accessible: an #AtkObject
 848  * @i: a gint representing the position of the child, starting from 0
 849  *
 850  * Gets a reference to the specified accessible child of the object.
 851  * The accessible children are 0-based so the first accessible child is
 852  * at index 0, the second at index 1 and so on.
 853  *
 854  * Returns: (transfer full): an #AtkObject representing the specified
 855  * accessible child of the accessible.
 856  **/
 857 AtkObject*
 858 atk_object_ref_accessible_child (AtkObject   *accessible,
 859                                  gint        i)
 860 {
 861   AtkObjectClass *klass;
 862
 863   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
 864
 865   klass = ATK_OBJECT_GET_CLASS (accessible);
 866   if (klass->ref_child)
 867     return (klass->ref_child) (accessible, i);
 868   else
 869     return NULL;
 870 }
 871
 872 /**
 873  * atk_object_ref_relation_set:
 874  * @accessible: an #AtkObject
 875  *
 876  * Gets the #AtkRelationSet associated with the object.
 877  *
 878  * Returns: (transfer full): an #AtkRelationSet representing the relation set
 879  * of the object.
 880  **/
 881 AtkRelationSet*
 882 atk_object_ref_relation_set (AtkObject *accessible)
 883 {
 884   AtkObjectClass *klass;
 885
 886   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
 887
 888   klass = ATK_OBJECT_GET_CLASS (accessible);
 889   if (klass->ref_relation_set)
 890     return (klass->ref_relation_set) (accessible);
 891   else
 892     return NULL;
 893 }
 894
 895 /**
 896  * atk_role_register:
 897  * @name: a character string describing the new role.
 898  *
 899  * Registers the role specified by @name.
 900  *
 901  * Returns: an #AtkRole for the new role.
 902  **/
 903 AtkRole
 904 atk_role_register (const gchar *name)
 905 {
 906   if (!role_names)
 907     initialize_role_names ();
 908
 909   g_ptr_array_add (role_names, g_strdup (name));
 910   return role_names->len - 1;
 911 }
 912
 913 /**
 914  * atk_object_get_role:
 915  * @accessible: an #AtkObject
 916  *
 917  * Gets the role of the accessible.
 918  *
 919  * Returns: an #AtkRole which is the role of the accessible
 920  **/
 921 AtkRole
 922 atk_object_get_role (AtkObject *accessible)
 923 {
 924   AtkObjectClass *klass;
 925
 926   g_return_val_if_fail (ATK_IS_OBJECT (accessible), ATK_ROLE_UNKNOWN);
 927
 928   klass = ATK_OBJECT_GET_CLASS (accessible);
 929   if (klass->get_role)
 930     return (klass->get_role) (accessible);
 931   else
 932     return ATK_ROLE_UNKNOWN;
 933 }
 934
 935 /**
 936  * atk_object_get_layer:
 937  * @accessible: an #AtkObject
 938  *
 939  * Gets the layer of the accessible.
 940  *
 941  * Deprecated: Use atk_component_get_layer instead.
 942  *
 943  * Returns: an #AtkLayer which is the layer of the accessible
 944  **/
 945 AtkLayer
 946 atk_object_get_layer (AtkObject *accessible)
 947 {
 948   AtkObjectClass *klass;
 949
 950   g_return_val_if_fail (ATK_IS_OBJECT (accessible), ATK_LAYER_INVALID);
 951
 952   klass = ATK_OBJECT_GET_CLASS (accessible);
 953   if (klass->get_layer)
 954     return (klass->get_layer) (accessible);
 955   else
 956     return ATK_LAYER_INVALID;
 957 }
 958
 959 /**
 960  * atk_object_get_mdi_zorder:
 961  * @accessible: an #AtkObject
 962  *
 963  * Gets the zorder of the accessible. The value G_MININT will be returned
 964  * if the layer of the accessible is not ATK_LAYER_MDI.
 965  *
 966  * Deprecated: Use atk_component_get_mdi_zorder instead.
 967  *
 968  * Returns: a gint which is the zorder of the accessible, i.e. the depth at
 969  * which the component is shown in relation to other components in the same
 970  * container.
 971  *
 972  **/
 973 gint
 974 atk_object_get_mdi_zorder (AtkObject *accessible)
 975 {
 976   AtkObjectClass *klass;
 977
 978   g_return_val_if_fail (ATK_IS_OBJECT (accessible), G_MININT);
 979
 980   klass = ATK_OBJECT_GET_CLASS (accessible);
 981   if (klass->get_mdi_zorder)
 982     return (klass->get_mdi_zorder) (accessible);
 983   else
 984     return G_MININT;
 985 }
 986
 987 /**
 988  * atk_object_ref_state_set:
 989  * @accessible: an #AtkObject
 990  *
 991  * Gets a reference to the state set of the accessible; the caller must
 992  * unreference it when it is no longer needed.
 993  *
 994  * Returns: (transfer full): a reference to an #AtkStateSet which is the state
 995  * set of the accessible
 996  **/
 997 AtkStateSet*
 998 atk_object_ref_state_set (AtkObject *accessible)
 999 {
1000   AtkObjectClass *klass;
1001
1002   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
1003
1004   klass = ATK_OBJECT_GET_CLASS (accessible);
1005   if (klass->ref_state_set)
1006     return (klass->ref_state_set) (accessible);
1007   else
1008     return NULL;
1009 }
1010
1011 /**
1012  * atk_object_get_index_in_parent:
1013  * @accessible: an #AtkObject
1014  *
1015  * Gets the 0-based index of this accessible in its parent; returns -1 if the
1016  * accessible does not have an accessible parent.
1017  *
1018  * Returns: an integer which is the index of the accessible in its parent
1019  **/
1020 gint
1021 atk_object_get_index_in_parent (AtkObject *accessible)
1022 {
1023   AtkObjectClass *klass;
1024
1025   g_return_val_if_fail (ATK_OBJECT (accessible), -1);
1026
1027   klass = ATK_OBJECT_GET_CLASS (accessible);
1028   if (klass->get_index_in_parent)
1029     return (klass->get_index_in_parent) (accessible);
1030   else
1031     return -1;
1032 }
1033
1034 /**
1035  * atk_object_set_name:
1036  * @accessible: an #AtkObject
1037  * @name: a character string to be set as the accessible name
1038  *
1039  * Sets the accessible name of the accessible. You can't set the name
1040  * to NULL. This is reserved for the initial value. In this aspect
1041  * NULL is similar to ATK_ROLE_UNKNOWN. If you want to set the name to
1042  * a empty value you can use "".
1043  **/
1044 void
1045 atk_object_set_name (AtkObject    *accessible,
1046                      const gchar  *name)
1047 {
1048   AtkObjectClass *klass;
1049   gboolean notify = FALSE;
1050
1051   g_return_if_fail (ATK_IS_OBJECT (accessible));
1052   g_return_if_fail (name != NULL);
1053
1054   klass = ATK_OBJECT_GET_CLASS (accessible);
1055   if (klass->set_name)
1056     {
1057       /* Do not notify for initial name setting. See bug 665870 */
1058       notify = (accessible->name != NULL);
1059
1060       (klass->set_name) (accessible, name);
1061       if (notify)
1062         g_object_notify (G_OBJECT (accessible), atk_object_name_property_name);
1063     }
1064 }
1065
1066 /**
1067  * atk_object_set_description:
1068  * @accessible: an #AtkObject
1069  * @description: a character string to be set as the accessible description
1070  *
1071  * Sets the accessible description of the accessible. You can't set
1072  * the description to NULL. This is reserved for the initial value. In
1073  * this aspect NULL is similar to ATK_ROLE_UNKNOWN. If you want to set
1074  * the name to a empty value you can use "".
1075  **/
1076 void
1077 atk_object_set_description (AtkObject   *accessible,
1078                             const gchar *description)
1079 {
1080   AtkObjectClass *klass;
1081   gboolean notify = FALSE;
1082
1083   g_return_if_fail (ATK_IS_OBJECT (accessible));
1084   g_return_if_fail (description != NULL);
1085
1086   klass = ATK_OBJECT_GET_CLASS (accessible);
1087   if (klass->set_description)
1088     {
1089       /* Do not notify for initial name setting. See bug 665870 */
1090       notify = (accessible->description != NULL);
1091
1092       (klass->set_description) (accessible, description);
1093       if (notify)
1094         g_object_notify (G_OBJECT (accessible),
1095                          atk_object_name_property_description);
1096     }
1097 }
1098
1099 /**
1100  * atk_object_set_parent:
1101  * @accessible: an #AtkObject
1102  * @parent: an #AtkObject to be set as the accessible parent
1103  *
1104  * Sets the accessible parent of the accessible. @parent can be NULL.
1105  **/
1106 void
1107 atk_object_set_parent (AtkObject *accessible,
1108                        AtkObject *parent)
1109 {
1110   AtkObjectClass *klass;
1111
1112   g_return_if_fail (ATK_IS_OBJECT (accessible));
1113
1114   klass = ATK_OBJECT_GET_CLASS (accessible);
1115   if (klass->set_parent)
1116     {
1117       (klass->set_parent) (accessible, parent);
1118       g_object_notify (G_OBJECT (accessible), atk_object_name_property_parent);
1119     }
1120 }
1121
1122 /**
1123  * atk_object_set_role:
1124  * @accessible: an #AtkObject
1125  * @role: an #AtkRole to be set as the role
1126  *
1127  * Sets the role of the accessible.
1128  **/
1129 void
1130 atk_object_set_role (AtkObject *accessible,
1131                      AtkRole   role)
1132 {
1133   AtkObjectClass *klass;
1134   AtkRole old_role;
1135
1136   g_return_if_fail (ATK_IS_OBJECT (accessible));
1137
1138   klass = ATK_OBJECT_GET_CLASS (accessible);
1139   if (klass->set_role)
1140     {
1141       old_role = atk_object_get_role (accessible);
1142       if (old_role != role)
1143         {
1144           (klass->set_role) (accessible, role);
1145           if (old_role != ATK_ROLE_UNKNOWN)
1146           /* Do not notify for initial role setting */
1147             g_object_notify (G_OBJECT (accessible), atk_object_name_property_role);
1148         }
1149     }
1150 }
1151
1152 /**
1153  * atk_object_connect_property_change_handler:
1154  * @accessible: an #AtkObject
1155  * @handler: a function to be called when a property changes its value
1156  *
1157  * Deprecated: Since 2.12. Connect directly to property-change or
1158  * notify signals.
1159  *
1160  * Returns: a #guint which is the handler id used in
1161  * atk_object_remove_property_change_handler()
1162  **/
1163 guint
1164 atk_object_connect_property_change_handler (AtkObject *accessible,
1165                                             AtkPropertyChangeHandler *handler)
1166 {
1167   AtkObjectClass *klass;
1168
1169   g_return_val_if_fail (ATK_IS_OBJECT (accessible), 0);
1170   g_return_val_if_fail ((handler != NULL), 0);
1171
1172   klass = ATK_OBJECT_GET_CLASS (accessible);
1173   if (klass->connect_property_change_handler)
1174     return (klass->connect_property_change_handler) (accessible, handler);
1175   else
1176     return 0;
1177 }
1178
1179 /**
1180  * atk_object_remove_property_change_handler:
1181  * @accessible: an #AtkObject
1182  * @handler_id: a guint which identifies the handler to be removed.
1183  *
1184  * Deprecated: Since 2.12.
1185  *
1186  * Removes a property change handler.
1187  **/
1188 void
1189 atk_object_remove_property_change_handler  (AtkObject *accessible,
1190                                             guint      handler_id)
1191 {
1192   AtkObjectClass *klass;
1193
1194   g_return_if_fail (ATK_IS_OBJECT (accessible));
1195
1196   klass = ATK_OBJECT_GET_CLASS (accessible);
1197   if (klass->remove_property_change_handler)
1198     (klass->remove_property_change_handler) (accessible, handler_id);
1199 }
1200
1201 /**
1202  * atk_object_notify_state_change:
1203  * @accessible: an #AtkObject
1204  * @state: an #AtkState whose state is changed
1205  * @value: a gboolean which indicates whether the state is being set on or off
1206  *
1207  * Emits a state-change signal for the specified state.
1208  **/
1209 void
1210 atk_object_notify_state_change (AtkObject *accessible,
1211                                 AtkState  state,
1212                                 gboolean  value)
1213 {
1214   const gchar* name;
1215
1216   g_return_if_fail (ATK_IS_OBJECT (accessible));
1217
1218   name = atk_state_type_get_name (state);
1219   g_signal_emit (accessible, atk_object_signals[STATE_CHANGE],
1220                  g_quark_from_string (name),
1221                  name, value, NULL);
1222 }
1223
1224 /**
1225  * atk_implementor_ref_accessible:
1226  * @implementor: The #GObject instance which should implement #AtkImplementorIface
1227  * if a non-null return value is required.
1228  *
1229  * Gets a reference to an object's #AtkObject implementation, if
1230  * the object implements #AtkObjectIface
1231  *
1232  * Returns: (transfer full): a reference to an object's #AtkObject
1233  * implementation
1234  */
1235 AtkObject *
1236 atk_implementor_ref_accessible (AtkImplementor *implementor)
1237 {
1238   AtkImplementorIface *iface;
1239   AtkObject           *accessible = NULL;
1240
1241   g_return_val_if_fail (ATK_IS_IMPLEMENTOR (implementor), NULL);
1242
1243   iface = ATK_IMPLEMENTOR_GET_IFACE (implementor);
1244
1245   if (iface != NULL)
1246     accessible =  iface->ref_accessible (implementor);
1247
1248   g_return_val_if_fail ((accessible != NULL), NULL);
1249
1250   return accessible;
1251 }
1252
1253
1254 /**
1255  * atk_object_get_attributes:
1256  * @accessible: An #AtkObject.
1257  *
1258  * Get a list of properties applied to this object as a whole, as an #AtkAttributeSet consisting of
1259  * name-value pairs. As such these attributes may be considered weakly-typed properties or annotations,
1260  * as distinct from strongly-typed object data available via other get/set methods.
1261  * Not all objects have explicit "name-value pair" #AtkAttributeSet properties.
1262  *
1263  * Since: 1.12
1264  *
1265  * Returns: (transfer full): an #AtkAttributeSet consisting of all
1266  * explicit properties/annotations applied to the object, or an empty
1267  * set if the object has no name-value pair attributes assigned to
1268  * it. This #atkattributeset should be freed by a call to
1269  * atk_attribute_set_free().
1270  */
1271 AtkAttributeSet *
1272 atk_object_get_attributes (AtkObject                  *accessible)
1273 {
1274   AtkObjectClass *klass;
1275
1276   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
1277
1278   klass = ATK_OBJECT_GET_CLASS (accessible);
1279   if (klass->get_attributes)
1280     return (klass->get_attributes) (accessible);
1281   else
1282     return NULL;
1283
1284 }
1285
1286 static AtkRelationSet*
1287 atk_object_real_ref_relation_set (AtkObject *accessible)
1288 {
1289   g_return_val_if_fail (accessible->relation_set, NULL);
1290   g_object_ref (accessible->relation_set);
1291
1292   return accessible->relation_set;
1293 }
1294
1295 static void
1296 atk_object_real_set_property (GObject      *object,
1297                               guint         prop_id,
1298                               const GValue *value,
1299                               GParamSpec   *pspec)
1300 {
1301   AtkObject *accessible;
1302
1303   accessible = ATK_OBJECT (object);
1304
1305   switch (prop_id)
1306     {
1307     case PROP_NAME:
1308       atk_object_set_name (accessible, g_value_get_string (value));
1309       break;
1310     case PROP_DESCRIPTION:
1311       atk_object_set_description (accessible, g_value_get_string (value));
1312       break;
1313     case PROP_ROLE:
1314       atk_object_set_role (accessible, g_value_get_int (value));
1315       break;
1316     case PROP_PARENT:
1317       atk_object_set_parent (accessible, g_value_get_object (value));
1318       break;
1319     case PROP_VALUE:
1320       if (ATK_IS_VALUE (accessible))
1321         atk_value_set_current_value (ATK_VALUE (accessible), value);
1322       break;
1323     case PROP_TABLE_SUMMARY:
1324       if (ATK_IS_TABLE (accessible))
1325         atk_table_set_summary (ATK_TABLE (accessible), g_value_get_object (value));
1326       break;
1327     case PROP_TABLE_CAPTION_OBJECT:
1328       if (ATK_IS_TABLE (accessible))
1329         atk_table_set_caption (ATK_TABLE (accessible), g_value_get_object (value));
1330       break;
1331     default:
1332       break;
1333     }
1334 }
1335
1336 static void
1337 atk_object_real_get_property (GObject      *object,
1338                               guint         prop_id,
1339                               GValue       *value,
1340                               GParamSpec   *pspec)
1341 {
1342   AtkObject *accessible;
1343
1344   accessible = ATK_OBJECT (object);
1345
1346   switch (prop_id)
1347     {
1348     case PROP_NAME:
1349       g_value_set_string (value, atk_object_get_name (accessible));
1350       break;
1351     case PROP_DESCRIPTION:
1352       g_value_set_string (value, atk_object_get_description (accessible));
1353       break;
1354     case PROP_ROLE:
1355       g_value_set_int (value, atk_object_get_role (accessible));
1356       break;
1357     case PROP_LAYER:
1358       if (ATK_IS_COMPONENT (accessible))
1359         g_value_set_int (value, atk_component_get_layer (ATK_COMPONENT (accessible)));
1360       break;
1361     case PROP_MDI_ZORDER:
1362       if (ATK_IS_COMPONENT (accessible))
1363         g_value_set_int (value, atk_component_get_mdi_zorder (ATK_COMPONENT (accessible)));
1364       break;
1365     case PROP_PARENT:
1366       g_value_set_object (value, atk_object_get_parent (accessible));
1367       break;
1368     case PROP_VALUE:
1369       if (ATK_IS_VALUE (accessible))
1370         atk_value_get_current_value (ATK_VALUE (accessible), value);
1371       break;
1372     case PROP_TABLE_SUMMARY:
1373       if (ATK_IS_TABLE (accessible))
1374         g_value_set_object (value, atk_table_get_summary (ATK_TABLE (accessible)));
1375       break;
1376     case PROP_TABLE_CAPTION_OBJECT:
1377       if (ATK_IS_TABLE (accessible))
1378         g_value_set_object (value, atk_table_get_caption (ATK_TABLE (accessible)));
1379       break;
1380     case PROP_HYPERTEXT_NUM_LINKS:
1381       if (ATK_IS_HYPERTEXT (accessible))
1382         g_value_set_int (value, atk_hypertext_get_n_links (ATK_HYPERTEXT (accessible)));
1383       break;
1384     default:
1385       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1386       break;
1387     }
1388 }
1389
1390 static void
1391 atk_object_finalize (GObject *object)
1392 {
1393   AtkObject        *accessible;
1394
1395   g_return_if_fail (ATK_IS_OBJECT (object));
1396
1397   accessible = ATK_OBJECT (object);
1398
1399   g_free (accessible->name);
1400   g_free (accessible->description);
1401
1402   /*
1403    * Free memory allocated for relation set if it have been allocated.
1404    */
1405   if (accessible->relation_set)
1406     g_object_unref (accessible->relation_set);
1407
1408   if (accessible->accessible_parent)
1409     g_object_unref (accessible->accessible_parent);
1410
1411   G_OBJECT_CLASS (parent_class)->finalize (object);
1412 }
1413
1414 static const gchar*
1415 atk_object_real_get_name (AtkObject *object)
1416 {
1417   return object->name;
1418 }
1419
1420 static const gchar*
1421 atk_object_real_get_description (AtkObject *object)
1422 {
1423   return object->description;
1424 }
1425
1426 static AtkObject*
1427 atk_object_real_get_parent (AtkObject       *object)
1428 {
1429   return atk_object_peek_parent (object);
1430 }
1431
1432 static AtkRole
1433 atk_object_real_get_role (AtkObject       *object)
1434 {
1435   return object->role;
1436 }
1437
1438 static AtkLayer
1439 atk_object_real_get_layer (AtkObject       *object)
1440 {
1441   return object->layer;
1442 }
1443
1444 static AtkStateSet*
1445 atk_object_real_ref_state_set (AtkObject *accessible)
1446 {
1447   AtkStateSet *state_set;
1448   AtkObject *focus_object;
1449
1450   state_set = atk_state_set_new ();
1451
1452   focus_object = atk_get_focus_object ();
1453   if (focus_object == accessible)
1454     atk_state_set_add_state (state_set, ATK_STATE_FOCUSED);
1455
1456   return state_set;
1457 }
1458
1459 static void
1460 atk_object_real_set_name (AtkObject       *object,
1461                           const gchar     *name)
1462 {
1463   g_free (object->name);
1464   object->name = g_strdup (name);
1465 }
1466
1467 static void
1468 atk_object_real_set_description (AtkObject       *object,
1469                                  const gchar     *description)
1470 {
1471   g_free (object->description);
1472   object->description = g_strdup (description);
1473 }
1474
1475 static void
1476 atk_object_real_set_parent (AtkObject       *object,
1477                             AtkObject       *parent)
1478 {
1479   if (object->accessible_parent)
1480     g_object_unref (object->accessible_parent);
1481
1482   object->accessible_parent = parent;
1483   if (object->accessible_parent)
1484     g_object_ref (object->accessible_parent);
1485 }
1486
1487 static void
1488 atk_object_real_set_role (AtkObject *object,
1489                           AtkRole   role)
1490 {
1491   object->role = role;
1492 }
1493
1494 /**
1495  * atk_object_initialize:
1496  * @accessible: a #AtkObject
1497  * @data: a #gpointer which identifies the object for which the AtkObject was created.
1498  *
1499  * This function is called when implementing subclasses of #AtkObject.
1500  * It does initialization required for the new object. It is intended
1501  * that this function should called only in the ..._new() functions used
1502  * to create an instance of a subclass of #AtkObject
1503  **/
1504 void
1505 atk_object_initialize (AtkObject  *accessible,
1506                        gpointer   data)
1507 {
1508   AtkObjectClass *klass;
1509
1510   g_return_if_fail (ATK_IS_OBJECT (accessible));
1511
1512   klass = ATK_OBJECT_GET_CLASS (accessible);
1513   if (klass->initialize)
1514     klass->initialize (accessible, data);
1515 }
1516
1517 /*
1518  * This function is a signal handler for notify signal which gets emitted
1519  * when a property changes value.
1520  *
1521  * It constructs an AtkPropertyValues structure and emits a "property_changed"
1522  * signal which causes the user specified AtkPropertyChangeHandler
1523  * to be called.
1524  */
1525 static void
1526 atk_object_notify (GObject     *obj,
1527                    GParamSpec  *pspec)
1528 {
1529   AtkPropertyValues values = { NULL, };
1530
1531   g_value_init (&values.new_value, pspec->value_type);
1532   g_object_get_property (obj, pspec->name, &values.new_value);
1533   values.property_name = pspec->name;
1534   g_signal_emit (obj, atk_object_signals[PROPERTY_CHANGE],
1535                  g_quark_from_string (pspec->name),
1536                  &values, NULL);
1537   g_value_unset (&values.new_value);
1538 }
1539
1540 /**
1541  * atk_role_get_name:
1542  * @role: The #AtkRole whose name is required
1543  *
1544  * Gets the description string describing the #AtkRole @role.
1545  *
1546  * Returns: the string describing the AtkRole
1547  */
1548 const gchar*
1549 atk_role_get_name (AtkRole role)
1550 {
1551   g_return_val_if_fail (role >= 0, NULL);
1552
1553   if (!role_names)
1554     initialize_role_names ();
1555
1556   if (role < role_names->len)
1557     return g_ptr_array_index (role_names, role);
1558
1559   return NULL;
1560 }
1561
1562 /**
1563  * atk_role_get_localized_name:
1564  * @role: The #AtkRole whose localized name is required
1565  *
1566  * Gets the localized description string describing the #AtkRole @role.
1567  *
1568  * Returns: the localized string describing the AtkRole
1569  **/
1570 const gchar*
1571 atk_role_get_localized_name (AtkRole role)
1572 {
1573   gettext_initialization ();
1574
1575   return dgettext (GETTEXT_PACKAGE, atk_role_get_name (role));
1576 }
1577
1578 static const gchar*
1579 atk_object_real_get_object_locale (AtkObject *object)
1580 {
1581   return setlocale (LC_MESSAGES, NULL);
1582 }
1583
1584 /**
1585  * atk_object_get_object_locale:
1586  * @accessible: an #AtkObject
1587  *
1588  * Gets a UTF-8 string indicating the POSIX-style LC_MESSAGES locale
1589  * of @accessible.
1590  *
1591  * Since: 2.7.90
1592  *
1593  * Returns: a UTF-8 string indicating the POSIX-style LC_MESSAGES
1594  *          locale of @accessible.
1595  **/
1596 const gchar*
1597 atk_object_get_object_locale (AtkObject *accessible)
1598 {
1599   AtkObjectClass *klass;
1600
1601   g_return_val_if_fail (ATK_IS_OBJECT (accessible), NULL);
1602
1603   klass = ATK_OBJECT_GET_CLASS (accessible);
1604   if (klass->get_object_locale)
1605     return (klass->get_object_locale) (accessible);
1606   else
1607     return NULL;
1608 }
1609
1610
1611 /**
1612  * atk_role_for_name:
1613  * @name: a string which is the (non-localized) name of an ATK role.
1614  *
1615  * Get the #AtkRole type corresponding to a rolew name.
1616  *
1617  * Returns: the #AtkRole enumerated type corresponding to the specified name,
1618  *          or #ATK_ROLE_INVALID if no matching role is found.
1619  **/
1620 AtkRole
1621 atk_role_for_name (const gchar *name)
1622 {
1623   AtkRole role = ATK_ROLE_INVALID;
1624   gint i;
1625
1626   g_return_val_if_fail (name, ATK_ROLE_INVALID);
1627
1628   if (!role_names)
1629     initialize_role_names ();
1630
1631   for (i = 0; i < role_names->len; i++)
1632     {
1633       gchar *role_name = (gchar *)g_ptr_array_index (role_names, i);
1634
1635       g_return_val_if_fail (role_name, ATK_ROLE_INVALID);
1636
1637       if (strcmp (name, role_name) == 0)
1638         {
1639           role = i;
1640           break;
1641         }
1642     }
1643
1644   return role;
1645 }
1646
1647 /**
1648  * atk_object_add_relationship:
1649  * @object: The #AtkObject to which an AtkRelation is to be added.
1650  * @relationship: The #AtkRelationType of the relation
1651  * @target: The #AtkObject which is to be the target of the relation.
1652  *
1653  * Adds a relationship of the specified type with the specified target.
1654  *
1655  * Returns: TRUE if the relationship is added.
1656  **/
1657 gboolean
1658 atk_object_add_relationship (AtkObject       *object,
1659                              AtkRelationType relationship,
1660                              AtkObject       *target)
1661 {
1662   AtkObject *array[1];
1663   AtkRelation *relation;
1664
1665   g_return_val_if_fail (ATK_IS_OBJECT (object), FALSE);
1666   g_return_val_if_fail (ATK_IS_OBJECT (target), FALSE);
1667
1668   if (atk_relation_set_contains_target (object->relation_set,
1669                                         relationship, target))
1670     return FALSE;
1671
1672   array[0] = target;
1673   relation = atk_relation_new (array, 1, relationship);
1674   atk_relation_set_add (object->relation_set, relation);
1675   g_object_unref (relation);
1676
1677   return TRUE;
1678 }
1679
1680 /**
1681  * atk_object_remove_relationship:
1682  * @object: The #AtkObject from which an AtkRelation is to be removed.
1683  * @relationship: The #AtkRelationType of the relation
1684  * @target: The #AtkObject which is the target of the relation to be removed.
1685  *
1686  * Removes a relationship of the specified type with the specified target.
1687  *
1688  * Returns: TRUE if the relationship is removed.
1689  **/
1690 gboolean
1691 atk_object_remove_relationship (AtkObject       *object,
1692                                 AtkRelationType relationship,
1693                                 AtkObject       *target)
1694 {
1695   gboolean ret = FALSE;
1696   AtkRelation *relation;
1697   GPtrArray *array;
1698
1699   g_return_val_if_fail (ATK_IS_OBJECT (object), FALSE);
1700   g_return_val_if_fail (ATK_IS_OBJECT (target), FALSE);
1701
1702   relation = atk_relation_set_get_relation_by_type (object->relation_set, relationship);
1703
1704   if (relation)
1705     {
1706       ret = atk_relation_remove_target (relation, target);
1707       array = atk_relation_get_target (relation);
1708       if (!array || array->len == 0)
1709         atk_relation_set_remove (object->relation_set, relation);
1710     }
1711   return ret;
1712 }
1713
1714 static void
1715 atk_object_real_initialize (AtkObject *accessible,
1716                             gpointer  data)
1717 {
1718   return;
1719 }