2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2001, 2002 Sun Microsystems Inc.,
6 * Copyright 2001, 2002 Ximian, Inc.
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.
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.
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.
26 * Basic SPI initialization and event loop function prototypes
30 #include "atspi-private.h"
35 static void handle_get_items (DBusPendingCall *pending, void *user_data);
37 static DBusConnection *bus = NULL;
38 static GHashTable *apps = NULL;
39 static GHashTable *live_refs = NULL;
40 static GQueue *exception_handlers = NULL;
41 static DBusError exception;
43 const char *atspi_path_dec = ATSPI_DBUS_PATH_DEC;
44 const char *atspi_path_registry = ATSPI_DBUS_PATH_REGISTRY;
45 const char *atspi_path_root = ATSPI_DBUS_PATH_ROOT;
46 const char *atspi_bus_registry = ATSPI_DBUS_NAME_REGISTRY;
47 const char *atspi_interface_accessible = ATSPI_DBUS_INTERFACE_ACCESSIBLE;
48 const char *atspi_interface_action = ATSPI_DBUS_INTERFACE_ACTION;
49 const char *atspi_interface_application = ATSPI_DBUS_INTERFACE_APPLICATION;
50 const char *atspi_interface_collection = ATSPI_DBUS_INTERFACE_COLLECTION;
51 const char *atspi_interface_component = ATSPI_DBUS_INTERFACE_COMPONENT;
52 const char *atspi_interface_dec = ATSPI_DBUS_INTERFACE_DEC;
53 const char *atspi_interface_device_event_listener = ATSPI_DBUS_INTERFACE_DEVICE_EVENT_LISTENER;
54 const char *atspi_interface_document = ATSPI_DBUS_INTERFACE_DOCUMENT;
55 const char *atspi_interface_editable_text = ATSPI_DBUS_INTERFACE_EDITABLE_TEXT;
56 const char *atspi_interface_event_object = ATSPI_DBUS_INTERFACE_EVENT_OBJECT;
57 const char *atspi_interface_hyperlink = ATSPI_DBUS_INTERFACE_HYPERLINK;
58 const char *atspi_interface_hypertext = ATSPI_DBUS_INTERFACE_HYPERTEXT;
59 const char *atspi_interface_image = ATSPI_DBUS_INTERFACE_IMAGE;
60 const char *atspi_interface_registry = ATSPI_DBUS_INTERFACE_REGISTRY;
61 const char *atspi_interface_selection = ATSPI_DBUS_INTERFACE_SELECTION;
62 const char *atspi_interface_table = ATSPI_DBUS_INTERFACE_TABLE;
63 const char *atspi_interface_text = ATSPI_DBUS_INTERFACE_TEXT;
64 const char *atspi_interface_cache = ATSPI_DBUS_INTERFACE_CACHE;
65 const char *atspi_interface_value = ATSPI_DBUS_INTERFACE_VALUE;
67 static const char *interfaces[] =
69 ATSPI_DBUS_INTERFACE_ACCESSIBLE,
70 ATSPI_DBUS_INTERFACE_ACTION,
71 ATSPI_DBUS_INTERFACE_APPLICATION,
72 ATSPI_DBUS_INTERFACE_COLLECTION,
73 ATSPI_DBUS_INTERFACE_COMPONENT,
74 ATSPI_DBUS_INTERFACE_DOCUMENT,
75 ATSPI_DBUS_INTERFACE_EDITABLE_TEXT,
76 ATSPI_DBUS_INTERFACE_HYPERLINK,
77 ATSPI_DBUS_INTERFACE_HYPERTEXT,
78 ATSPI_DBUS_INTERFACE_IMAGE,
79 "org.a11y.atspi.LoginHelper",
80 ATSPI_DBUS_INTERFACE_SELECTION,
81 ATSPI_DBUS_INTERFACE_TABLE,
82 ATSPI_DBUS_INTERFACE_TEXT,
83 ATSPI_DBUS_INTERFACE_VALUE,
88 _atspi_get_iface_num (const char *iface)
90 /* TODO: Use a binary search or hash to improve performance */
93 for (i = 0; interfaces[i]; i++)
95 if (!strcmp(iface, interfaces[i])) return i;
105 live_refs = g_hash_table_new (g_direct_hash, g_direct_equal);
110 /* TODO: Add an application parameter */
119 #define APP_IS_REGISTRY(app) (!strcmp (app->bus_name, atspi_bus_registry))
130 g_hash_table_destroy (refs);
134 static gboolean atspi_inited = FALSE;
136 static GHashTable *app_hash = NULL;
139 handle_get_bus_address (DBusPendingCall *pending, void *user_data)
141 AtspiApplication *app = user_data;
142 DBusMessage *reply = dbus_pending_call_steal_reply (pending);
143 DBusMessage *message;
145 DBusPendingCall *new_pending;
147 if (dbus_message_get_type (reply) == DBUS_MESSAGE_TYPE_METHOD_RETURN)
149 if (dbus_message_get_args (reply, NULL, DBUS_TYPE_STRING, &address,
153 dbus_error_init (&error);
154 DBusConnection *bus = dbus_connection_open (address, &error);
158 dbus_connection_unref (app->bus);
164 message = dbus_message_new_method_call (app->bus_name,
165 "/org/a11y/atspi/cache",
166 atspi_interface_cache, "GetItems");
168 dbus_connection_send_with_reply (app->bus, message, &new_pending, 2000);
169 dbus_pending_call_set_notify (new_pending, handle_get_items, app, NULL);
172 static AtspiApplication *
173 get_application (const char *bus_name)
175 AtspiApplication *app = NULL;
177 DBusMessage *message;
179 DBusPendingCall *pending = NULL;
183 app_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify)g_hash_table_unref);
184 if (!app_hash) return NULL;
186 app = g_hash_table_lookup (app_hash, bus_name);
188 bus_name_dup = g_strdup (bus_name);
189 if (!bus_name_dup) return NULL;
190 // TODO: change below to something that will send state-change:defunct notification if necessary */
191 app = _atspi_application_new (bus_name);
192 if (!app) return NULL;
193 app->bus_name = bus_name_dup;
194 app->hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
195 app->bus = _atspi_bus ();
196 g_hash_table_insert (app_hash, bus_name_dup, app);
197 dbus_error_init (&error);
198 message = dbus_message_new_method_call (bus_name, atspi_path_root,
199 atspi_interface_application, "GetApplicationBusAddress");
201 dbus_connection_send_with_reply (app->bus, message, &pending, 2000);
202 dbus_pending_call_set_notify (pending, handle_get_bus_address, app, NULL);
206 static AtspiAccessible *
207 ref_accessible (const char *app_name, const char *path)
209 AtspiApplication *app;
212 if (!strcmp (path, ATSPI_DBUS_PATH_NULL))
215 app = get_application (app_name);
217 if (!strcmp (path, "/org/a11y/atspi/accessible/root"))
221 app->root = atspi_accessible_new (app, atspi_path_root);
222 app->root->accessible_parent = atspi_get_desktop (0);
224 return g_object_ref (app->root);
227 a = g_hash_table_lookup (app->hash, path);
230 return g_object_ref (a);
232 a = atspi_accessible_new (app, path);
235 g_hash_table_insert (app->hash, a->parent.path, a);
236 g_object_ref (a); /* for the hash */
240 static AtspiHyperlink *
241 ref_hyperlink (const char *app_name, const char *path)
243 AtspiApplication *app = get_application (app_name);
244 AtspiHyperlink *hyperlink;
246 if (!strcmp (path, ATSPI_DBUS_PATH_NULL))
249 hyperlink = g_hash_table_lookup (app->hash, path);
252 return g_object_ref (hyperlink);
254 hyperlink = atspi_hyperlink_new (app, path);
257 g_hash_table_insert (app->hash, hyperlink->parent.path, hyperlink);
258 /* TODO: This should be a weak ref */
259 g_object_ref (hyperlink); /* for the hash */
272 GArray *state_bitflags;
275 static DBusHandlerResult
276 handle_remove_accessible (DBusConnection *bus, DBusMessage *message, void *user_data)
278 const char *sender = dbus_message_get_sender (message);
279 AtspiApplication *app;
281 DBusMessageIter iter, iter_struct;
282 const char *signature = dbus_message_get_signature (message);
286 if (strcmp (signature, "(so)") != 0)
288 g_warning ("at-spi: Unknown signature %s for RemoveAccessible", signature);
289 return DBUS_HANDLER_RESULT_HANDLED;
292 dbus_message_iter_init (message, &iter);
293 dbus_message_iter_recurse (&iter, &iter_struct);
294 dbus_message_iter_get_basic (&iter_struct, &sender);
295 dbus_message_iter_get_basic (&iter_struct, &path);
296 app = get_application (sender);
297 a = ref_accessible (sender, path);
299 return DBUS_HANDLER_RESULT_HANDLED;
300 if (a->accessible_parent && g_list_find (a->accessible_parent->children, a))
302 a->accessible_parent->children = g_list_remove (a->accessible_parent->children, a);
305 g_hash_table_remove (app->hash, app->bus_name);
306 g_object_unref (a); /* unref our own ref */
307 return DBUS_HANDLER_RESULT_HANDLED;
311 add_app_to_desktop (AtspiAccessible *a, const char *bus_name)
316 dbus_error_init (&error);
317 AtspiAccessible *obj = ref_accessible (bus_name, atspi_path_root);
320 GList *new_list = g_list_append (a->children, obj);
323 a->children = new_list;
329 g_warning ("Error calling getRoot for %s: %s", bus_name, error.message);
335 send_children_changed (AtspiAccessible *parent, AtspiAccessible *child, gboolean add)
339 memset (&e, 0, sizeof (e));
340 e.type = (add? "object:children-changed:add": "object:children-changed:remove");
342 e.detail1 = g_list_index (parent->children, child);
344 _atspi_send_event (&e);
348 unref_object_and_descendants (AtspiAccessible *obj)
352 for (l = obj->children; l; l = l->next)
354 unref_object_and_descendants (l->data);
356 g_object_unref (obj);
360 remove_app_from_desktop (AtspiAccessible *a, const char *bus_name)
363 AtspiAccessible *child;
365 for (l = a->children; l; l = l->next)
368 if (!strcmp (bus_name, child->parent.app->bus_name)) break;
372 g_warning ("Removing unregistered app %s; doing nothing\n", bus_name);
375 send_children_changed (a, child, FALSE);
376 a->children = g_list_remove (a->children, child);
377 unref_object_and_descendants (child);
381 static AtspiAccessible *desktop;
384 get_reference_from_iter (DBusMessageIter *iter, const char **app_name, const char **path)
386 DBusMessageIter iter_struct;
388 dbus_message_iter_recurse (iter, &iter_struct);
389 dbus_message_iter_get_basic (&iter_struct, app_name);
390 dbus_message_iter_next (&iter_struct);
391 dbus_message_iter_get_basic (&iter_struct, path);
392 dbus_message_iter_next (iter);
396 add_accessible_from_iter (DBusMessageIter *iter)
400 DBusMessageIter iter_struct, iter_array;
401 const char *app_name, *path;
402 AtspiApplication *app;
403 AtspiAccessible *accessible;
404 const char *name, *description;
407 dbus_message_iter_recurse (iter, &iter_struct);
410 get_reference_from_iter (&iter_struct, &app_name, &path);
411 accessible = ref_accessible (app_name, path);
415 /* Get application: TODO */
416 dbus_message_iter_next (&iter_struct);
419 get_reference_from_iter (&iter_struct, &app_name, &path);
420 if (accessible->accessible_parent)
421 g_object_unref (accessible->accessible_parent);
422 accessible->accessible_parent = ref_accessible (app_name, path);
425 while (accessible->children)
427 g_object_unref (accessible->children->data);
428 accessible->children = g_list_remove (accessible->children, accessible->children->data);
430 dbus_message_iter_recurse (&iter_struct, &iter_array);
431 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
433 AtspiAccessible *child;
434 get_reference_from_iter (&iter_array, &app_name, &path);
435 child = ref_accessible (app_name, path);
436 new_list = g_list_append (accessible->children, child);
437 if (new_list) accessible->children = new_list;
441 dbus_message_iter_next (&iter_struct);
442 _atspi_dbus_set_interfaces (accessible, &iter_struct);
443 dbus_message_iter_next (&iter_struct);
446 if (accessible->name)
447 g_free (accessible->name);
448 dbus_message_iter_get_basic (&iter_struct, &name);
449 accessible->name = g_strdup (name);
450 dbus_message_iter_next (&iter_struct);
453 dbus_message_iter_get_basic (&iter_struct, &role);
454 accessible->role = role;
455 dbus_message_iter_next (&iter_struct);
458 if (accessible->description)
459 g_free (accessible->description);
460 dbus_message_iter_get_basic (&iter_struct, &description);
461 accessible->description = g_strdup (description);
462 dbus_message_iter_next (&iter_struct);
464 _atspi_dbus_set_state (accessible, &iter_struct);
465 dbus_message_iter_next (&iter_struct);
467 accessible->cached_properties |= ATSPI_CACHE_NAME | ATSPI_CACHE_ROLE | ATSPI_CACHE_PARENT;
468 if (!atspi_state_set_contains (accessible->states,
469 ATSPI_STATE_MANAGES_DESCENDANTS))
470 accessible->cached_properties |= ATSPI_CACHE_CHILDREN;
472 /* This is a bit of a hack since the cache holds a ref, so we don't need
473 * the one provided for us anymore */
474 g_object_unref (accessible);
478 handle_get_items (DBusPendingCall *pending, void *user_data)
480 AtspiApplication *app = user_data;
481 DBusMessage *reply = dbus_pending_call_steal_reply (pending);
482 DBusMessageIter iter, iter_array;
484 if (dbus_message_get_type (reply) == DBUS_MESSAGE_TYPE_ERROR)
486 dbus_message_unref (reply);
487 g_warning ("Atspi: Error in GetItems, sender=%s", dbus_message_get_sender (reply));
491 dbus_message_iter_init (reply, &iter);
492 dbus_message_iter_recurse (&iter, &iter_array);
493 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
495 add_accessible_from_iter (&iter_array);
496 dbus_message_iter_next (&iter_array);
498 dbus_message_unref (reply);
501 /* TODO: Do we stil need this function? */
502 static AtspiAccessible *
503 ref_accessible_desktop (AtspiApplication *app)
509 DBusMessage *message, *reply;
510 DBusMessageIter iter, iter_array;
514 g_object_ref (desktop);
517 desktop = atspi_accessible_new (app, atspi_path_root);
522 g_hash_table_insert (app->hash, desktop->parent.path, desktop);
523 g_object_ref (desktop); /* for the hash */
524 desktop->name = g_strdup ("main");
525 dbus_error_init (&error);
526 message = dbus_message_new_method_call (atspi_bus_registry,
528 atspi_interface_accessible,
532 reply = _atspi_dbus_send_with_reply_and_block (message);
533 if (!reply || strcmp (dbus_message_get_signature (reply), "a(so)") != 0)
535 g_error ("Couldn't get application list: %s", error.message);
537 dbus_message_unref (reply);
540 dbus_message_iter_init (reply, &iter);
541 dbus_message_iter_recurse (&iter, &iter_array);
542 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
544 const char *app_name, *path;
545 get_reference_from_iter (&iter_array, &app_name, &path);
546 add_app_to_desktop (desktop, app_name);
548 dbus_message_unref (reply);
553 _atspi_ref_accessible (const char *app, const char *path)
555 AtspiApplication *a = get_application (app);
557 if ( APP_IS_REGISTRY(a))
559 return ref_accessible_desktop (a);
561 return ref_accessible (app, path);
565 _atspi_dbus_return_accessible_from_message (DBusMessage *message)
567 DBusMessageIter iter;
568 AtspiAccessible *retval = NULL;
569 const char *signature;
574 signature = dbus_message_get_signature (message);
575 if (!strcmp (signature, "(so)"))
577 dbus_message_iter_init (message, &iter);
578 retval = _atspi_dbus_return_accessible_from_iter (&iter);
582 g_warning ("Atspi: Called _atspi_dbus_return_accessible_from_message with strange signature %s", signature);
584 dbus_message_unref (message);
589 _atspi_dbus_return_accessible_from_iter (DBusMessageIter *iter)
591 const char *app_name, *path;
593 get_reference_from_iter (iter, &app_name, &path);
594 return ref_accessible (app_name, path);
598 _atspi_dbus_return_hyperlink_from_message (DBusMessage *message)
600 DBusMessageIter iter;
601 AtspiHyperlink *retval = NULL;
602 const char *signature = dbus_message_get_signature (message);
604 if (!strcmp (signature, "(so)"))
606 dbus_message_iter_init (message, &iter);
607 retval = _atspi_dbus_return_hyperlink_from_iter (&iter);
611 g_warning ("Atspi: Called _atspi_dbus_return_hyperlink_from_message with strange signature %s", signature);
613 dbus_message_unref (message);
618 _atspi_dbus_return_hyperlink_from_iter (DBusMessageIter *iter)
620 const char *app_name, *path;
622 get_reference_from_iter (iter, &app_name, &path);
623 return ref_hyperlink (app_name, path);
626 const char *cache_signal_type = "((so)(so)(so)a(so)assusau)";
628 static DBusHandlerResult
629 handle_add_accessible (DBusConnection *bus, DBusMessage *message, void *user_data)
631 DBusMessageIter iter;
632 const char *sender = dbus_message_get_sender (message);
633 AtspiApplication *app = get_application (sender);
634 const char *type = cache_signal_type;
636 if (strcmp (dbus_message_get_signature (message), cache_signal_type) != 0)
638 g_warning ("atspi: AddAccessible with unknown signature %s\n", dbus_message_get_signature (message));
642 dbus_message_iter_init (message, &iter);
643 add_accessible_from_iter (&iter);
649 DBusMessage *message;
653 static guint process_deferred_messages_id = -1;
656 process_deferred_message (BusDataClosure *closure)
658 int type = dbus_message_get_type (closure->message);
659 const char *interface = dbus_message_get_interface (closure->message);
660 const char *member = dbus_message_get_member (closure->message);
664 if (type == DBUS_MESSAGE_TYPE_SIGNAL &&
665 !strncmp (interface, "org.a11y.atspi.Event.", 21))
667 atspi_dbus_handle_event (closure->bus, closure->message, closure->data);
669 if (dbus_message_is_method_call (closure->message, atspi_interface_device_event_listener, "NotifyEvent"))
671 atspi_dbus_handle_DeviceEvent (closure->bus,
672 closure->message, closure->data);
674 if (dbus_message_is_signal (closure->message, atspi_interface_cache, "AddAccessible"))
676 handle_add_accessible (closure->bus, closure->message, closure->data);
678 if (dbus_message_is_signal (closure->message, atspi_interface_cache, "RemoveAccessible"))
680 handle_remove_accessible (closure->bus, closure->message, closure->data);
684 static GList *deferred_messages = NULL;
687 _atspi_process_deferred_messages (gpointer data)
689 static int in_process_deferred_messages = 0;
691 if (in_process_deferred_messages)
693 in_process_deferred_messages = 1;
694 while (deferred_messages != NULL)
696 BusDataClosure *closure = deferred_messages->data;
697 process_deferred_message (closure);
698 deferred_messages = g_list_remove (deferred_messages, closure);
699 dbus_message_unref (closure->message);
700 dbus_connection_unref (closure->bus);
703 /* If data is NULL, assume that we were called from GLib */
705 process_deferred_messages_id = -1;
706 in_process_deferred_messages = 0;
710 static DBusHandlerResult
711 defer_message (DBusConnection *connection, DBusMessage *message, void *user_data)
713 BusDataClosure *closure = g_new (BusDataClosure, 1);
717 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
718 closure->bus = dbus_connection_ref (bus);
719 closure->message = dbus_message_ref (message);
720 closure->data = user_data;
722 new_list = g_list_append (deferred_messages, closure);
724 deferred_messages = new_list;
726 if (process_deferred_messages_id == -1)
727 process_deferred_messages_id = g_idle_add (_atspi_process_deferred_messages, NULL);
728 return DBUS_HANDLER_RESULT_HANDLED;
731 static DBusHandlerResult
732 atspi_dbus_filter (DBusConnection *bus, DBusMessage *message, void *data)
734 int type = dbus_message_get_type (message);
735 const char *interface = dbus_message_get_interface (message);
736 const char *member = dbus_message_get_member (message);
740 if (type == DBUS_MESSAGE_TYPE_SIGNAL &&
741 !strncmp (interface, "org.a11y.atspi.Event.", 21))
743 return defer_message (bus, message, data);
745 if (dbus_message_is_method_call (message, atspi_interface_device_event_listener, "NotifyEvent"))
747 return defer_message (bus, message, data);
749 if (dbus_message_is_signal (message, atspi_interface_cache, "AddAccessible"))
751 return defer_message (bus, message, data);
753 if (dbus_message_is_signal (message, atspi_interface_cache, "RemoveAccessible"))
755 return defer_message (bus, message, data);
757 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
760 static const char *signal_interfaces[] =
762 "org.a11y.atspi.Event.Object",
763 "org.a11y.atspi.Event.Window",
764 "org.a11y.atspi.Event.Mouse",
765 "org.a11y.atspi.Event.Terminal",
766 "org.a11y.atspi.Event.Document",
767 "org.a11y.atspi.Event.Focus",
772 * Returns a 'canonicalized' value for DISPLAY,
773 * with the screen number stripped off if present.
775 * TODO: Avoid having duplicate functions for this here and in at-spi2-atk
778 spi_display_name (void)
780 static const char *canonical_display_name = NULL;
781 if (!canonical_display_name)
783 const gchar *display_env = g_getenv ("AT_SPI_DISPLAY");
786 display_env = g_getenv ("DISPLAY");
787 if (!display_env || !display_env[0])
788 canonical_display_name = ":0";
791 gchar *display_p, *screen_p;
792 canonical_display_name = g_strdup (display_env);
793 display_p = g_utf8_strrchr (canonical_display_name, -1, ':');
794 screen_p = g_utf8_strrchr (canonical_display_name, -1, '.');
795 if (screen_p && display_p && (screen_p > display_p))
803 canonical_display_name = display_env;
806 return canonical_display_name;
809 /* TODO: Avoid having duplicate functions for this here and in at-spi2-atk */
810 static DBusConnection *
811 get_accessibility_bus ()
815 Display *bridge_display;
817 unsigned char *data = NULL;
818 unsigned long nitems;
819 unsigned long leftover;
821 DBusConnection *bus = NULL;
824 bridge_display = XOpenDisplay (spi_display_name ());
827 g_warning ("AT_SPI: Could not get the display\n");
831 AT_SPI_BUS = XInternAtom (bridge_display, "AT_SPI_BUS", False);
832 XGetWindowProperty (bridge_display,
833 XDefaultRootWindow (bridge_display),
835 (long) BUFSIZ, False,
836 (Atom) 31, &actual_type, &actual_format,
837 &nitems, &leftover, &data);
839 dbus_error_init (&error);
844 ("AT-SPI: Accessibility bus not found - Using session bus.\n");
845 bus = dbus_bus_get (DBUS_BUS_SESSION, &error);
848 g_warning ("AT-SPI: Couldn't connect to bus: %s\n", error.message);
854 bus = dbus_connection_open (data, &error);
857 g_warning ("AT-SPI: Couldn't connect to bus: %s\n", error.message);
862 if (!dbus_bus_register (bus, &error))
864 g_warning ("AT-SPI: Couldn't register with bus: %s\n", error.message);
876 * Connects to the accessibility registry and initializes the SPI.
878 * Returns: 0 on success, otherwise an integer error code.
898 dbus_error_init (&error);
899 bus = get_accessibility_bus ();
902 g_error ("Couldn't get session bus");
905 dbus_bus_register (bus, &error);
906 dbus_connection_setup_with_g_main(bus, g_main_context_default());
907 dbus_connection_add_filter (bus, atspi_dbus_filter, NULL, NULL);
908 dbind_set_timeout (1000);
909 match = g_strdup_printf ("type='signal',interface='%s',member='AddAccessible'", atspi_interface_cache);
910 dbus_error_init (&error);
911 dbus_bus_add_match (bus, match, &error);
913 match = g_strdup_printf ("type='signal',interface='%s',member='RemoveAccessible'", atspi_interface_cache);
914 dbus_bus_add_match (bus, match, &error);
916 match = g_strdup_printf ("type='signal',interface='%s',member='ChildrenChanged'", atspi_interface_event_object);
917 dbus_bus_add_match (bus, match, &error);
919 match = g_strdup_printf ("type='signal',interface='%s',member='PropertyChange'", atspi_interface_event_object);
920 dbus_bus_add_match (bus, match, &error);
922 match = g_strdup_printf ("type='signal',interface='%s',member='StateChanged'", atspi_interface_event_object);
923 dbus_bus_add_match (bus, match, &error);
928 static GMainLoop *mainloop;
933 * Starts/enters the main event loop for the AT-SPI services.
935 * (NOTE: This method does not return control, it is exited via a call to
936 * atspi_event_quit () from within an event handler).
940 atspi_event_main (void)
942 mainloop = g_main_loop_new (NULL, FALSE);
943 g_main_loop_run (mainloop);
949 * Quits the last main event loop for the SPI services,
950 * see atspi_event_main
953 atspi_event_quit (void)
955 g_main_loop_quit (mainloop);
961 * Disconnects from the Accessibility Registry and releases
962 * any floating resources. Call only once at exit.
964 * Returns: 0 if there were no leaks, otherwise non zero.
976 atspi_inited = FALSE;
980 leaked = g_hash_table_size (live_refs);
993 _atspi_dbus_call (gpointer obj, const char *interface, const char *method, GError **error, const char *type, ...)
998 AtspiObject *aobj = ATSPI_OBJECT (obj);
1000 va_start (args, type);
1001 dbus_error_init (&err);
1002 retval = dbind_method_call_reentrant_va (aobj->app->bus, aobj->app->bus_name,
1003 aobj->path, interface, method, &err,
1006 _atspi_process_deferred_messages ((gpointer)TRUE);
1007 if (dbus_error_is_set (&err))
1009 /* TODO: Set gerror */
1010 dbus_error_free (&err);
1016 _atspi_dbus_call_partial (gpointer obj,
1017 const char *interface,
1020 const char *type, ...)
1024 va_start (args, type);
1025 return _atspi_dbus_call_partial_va (obj, interface, method, error, type, args);
1029 _atspi_dbus_call_partial_va (gpointer obj,
1030 const char *interface,
1036 AtspiObject *aobj = ATSPI_OBJECT (obj);
1039 DBusMessage *msg = NULL, *reply = NULL;
1040 DBusMessageIter iter;
1043 dbus_error_init (&err);
1045 msg = dbus_message_new_method_call (aobj->app->bus_name, aobj->path, interface, method);
1050 dbus_message_iter_init_append (msg, &iter);
1051 dbind_any_marshal_va (&iter, &p, args);
1053 reply = dbind_send_and_allow_reentry (aobj->app->bus, msg, &err);
1056 _atspi_process_deferred_messages ((gpointer)TRUE);
1057 if (dbus_error_is_set (&err))
1059 /* TODO: Set gerror */
1060 dbus_error_free (&err);
1066 _atspi_dbus_get_property (gpointer obj, const char *interface, const char *name, GError **error, const char *type, void *data)
1068 DBusMessage *message, *reply;
1069 DBusMessageIter iter, iter_variant;
1071 dbus_bool_t retval = FALSE;
1072 AtspiObject *aobj = ATSPI_OBJECT (obj);
1077 message = dbus_message_new_method_call (aobj->app->bus_name,
1079 "org.freedesktop.DBus.Properties",
1083 // TODO: throw exception
1086 dbus_message_append_args (message, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
1087 dbus_error_init (&err);
1088 reply = dbind_send_and_allow_reentry (aobj->app->bus, message, &err);
1089 dbus_message_unref (message);
1090 _atspi_process_deferred_messages ((gpointer)TRUE);
1093 // TODO: throw exception
1096 dbus_message_iter_init (reply, &iter);
1097 if (dbus_message_iter_get_arg_type (&iter) != 'v')
1099 g_warning ("at-spi: expected a variant when fetching %s from interface %s; got %s\n", name, interface, dbus_message_get_signature (reply));
1102 dbus_message_iter_recurse (&iter, &iter_variant);
1103 if (dbus_message_iter_get_arg_type (&iter_variant) != type[0])
1105 g_warning ("atspi_dbus_get_property: Wrong type: expected %s, got %c\n", type, dbus_message_iter_get_arg_type (&iter_variant));
1108 if (!strcmp (type, "(so)"))
1110 *((AtspiAccessible **)data) = _atspi_dbus_return_accessible_from_iter (&iter_variant);
1114 dbus_message_iter_get_basic (&iter_variant, data);
1115 dbus_message_unref (reply);
1116 if (type [0] == 's')
1117 *(char **)data = g_strdup (*(char **)data);
1125 _atspi_dbus_send_with_reply_and_block (DBusMessage *message)
1129 AtspiApplication *app;
1130 DBusConnection *bus;
1132 app = get_application (dbus_message_get_destination (message));
1133 bus = (app ? app->bus : _atspi_bus());
1134 dbus_error_init (&err);
1135 reply = dbind_send_and_allow_reentry (bus, message, &err);
1136 _atspi_process_deferred_messages ((gpointer)TRUE);
1137 dbus_message_unref (message);
1139 g_warning ("Atspi: Got error: %s\n", err.message);
1144 _atspi_dbus_return_hash_from_message (DBusMessage *message)
1146 DBusMessageIter iter;
1149 _ATSPI_DBUS_CHECK_SIG (message, "a{ss}", NULL);
1151 dbus_message_iter_init (message, &iter);
1152 ret = _atspi_dbus_hash_from_iter (&iter);
1153 dbus_message_unref (message);
1158 _atspi_dbus_hash_from_iter (DBusMessageIter *iter)
1160 GHashTable *hash = g_hash_table_new (g_str_hash, g_str_equal);
1161 DBusMessageIter iter_array, iter_dict;
1163 dbus_message_iter_recurse (iter, &iter_array);
1164 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
1166 const char *name, *value;
1167 dbus_message_iter_recurse (&iter_array, &iter_dict);
1168 dbus_message_iter_get_basic (&iter_dict, &name);
1169 dbus_message_iter_next (&iter_dict);
1170 dbus_message_iter_get_basic (&iter_dict, &value);
1171 g_hash_table_insert (hash, g_strdup (name), g_strdup (value));
1172 dbus_message_iter_next (&iter_array);
1178 _atspi_dbus_return_attribute_array_from_message (DBusMessage *message)
1180 DBusMessageIter iter;
1183 _ATSPI_DBUS_CHECK_SIG (message, "a{ss}", NULL);
1185 dbus_message_iter_init (message, &iter);
1187 ret = _atspi_dbus_attribute_array_from_iter (&iter);
1188 dbus_message_unref (message);
1193 _atspi_dbus_attribute_array_from_iter (DBusMessageIter *iter)
1195 DBusMessageIter iter_array, iter_dict;
1196 GArray *array = g_array_new (TRUE, TRUE, sizeof (gchar *));
1199 dbus_message_iter_recurse (iter, &iter_array);
1200 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
1202 const char *name, *value;
1205 dbus_message_iter_recurse (&iter_array, &iter_dict);
1206 dbus_message_iter_get_basic (&iter_dict, &name);
1207 dbus_message_iter_next (&iter_dict);
1208 dbus_message_iter_get_basic (&iter_dict, &value);
1209 str = g_strdup_printf ("%s:%s", name, value);
1210 new_array = g_array_append_val (array, str);
1213 dbus_message_iter_next (&iter_array);;
1219 _atspi_dbus_set_interfaces (AtspiAccessible *accessible, DBusMessageIter *iter)
1221 DBusMessageIter iter_array;
1223 accessible->interfaces = 0;
1224 dbus_message_iter_recurse (iter, &iter_array);
1225 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
1229 dbus_message_iter_get_basic (&iter_array, &iface);
1230 if (!strcmp (iface, "org.freedesktop.DBus.Introspectable")) continue;
1231 n = _atspi_get_iface_num (iface);
1234 g_warning ("at-spi: Unknown interface %s", iface);
1237 accessible->interfaces |= (1 << n);
1238 dbus_message_iter_next (&iter_array);
1240 accessible->cached_properties |= ATSPI_CACHE_INTERFACES;
1244 _atspi_dbus_set_state (AtspiAccessible *accessible, DBusMessageIter *iter)
1246 DBusMessageIter iter_array;
1248 dbus_uint32_t *states;
1250 dbus_message_iter_recurse (iter, &iter_array);
1251 dbus_message_iter_get_fixed_array (&iter_array, &states, &count);
1254 g_warning ("at-spi: expected 2 values in states array; got %d\n", count);
1255 if (!accessible->states)
1256 accessible->states = _atspi_state_set_new_internal (accessible, 0);
1260 guint64 val = ((guint64)states [1]) << 32;
1262 if (!accessible->states)
1263 accessible->states = _atspi_state_set_new_internal (accessible, val);
1265 accessible->states->states = val;
1267 accessible->cached_properties |= ATSPI_CACHE_STATES;