2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2008, 2009 Codethink Ltd.
6 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
7 * Copyright 2001, 2002, 2003 Ximian, Inc.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
36 #include <droute/droute.h>
37 #include <atspi/atspi.h>
38 #include <atk-bridge.h>
44 #include "accessible-stateset.h"
46 #include "accessible-register.h"
47 #include "accessible-leasing.h"
48 #include "accessible-cache.h"
52 /*---------------------------------------------------------------------------*/
54 static DBusHandlerResult
55 signal_filter (DBusConnection *bus, DBusMessage *message, void *user_data);
57 SpiBridge *spi_global_app_data = NULL;
59 /*---------------------------------------------------------------------------*/
62 add_event (const char *bus_name, const char *event)
67 spi_atk_add_client (bus_name);
68 evdata = (event_data *) g_malloc (sizeof (*evdata));
71 data = g_strsplit (event, ":", 3);
77 evdata->bus_name = g_strdup (bus_name);
79 spi_global_app_data->events = g_list_append (spi_global_app_data->events, evdata);
82 static GSList *clients = NULL;
87 static int replies_received = 0;
90 if (replies_received == 3)
93 spi_atk_deregister_event_listeners ();
94 spi_global_app_data->events_initialized = TRUE;
99 get_events_reply (DBusPendingCall *pending, void *user_data)
101 DBusMessage *reply = dbus_pending_call_steal_reply (pending);
102 DBusMessageIter iter, iter_array, iter_struct;
107 if (strcmp (dbus_message_get_signature (reply), "a(ss)") != 0)
109 g_warning ("atk-bridge: GetRegisteredEvents returned message with unknown signature");
113 dbus_message_iter_init (reply, &iter);
114 dbus_message_iter_recurse (&iter, &iter_array);
115 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
117 char *bus_name, *event;
118 dbus_message_iter_recurse (&iter_array, &iter_struct);
119 dbus_message_iter_get_basic (&iter_struct, &bus_name);
120 dbus_message_iter_next (&iter_struct);
121 dbus_message_iter_get_basic (&iter_struct, &event);
122 add_event (bus_name, event);
123 dbus_message_iter_next (&iter_array);
128 dbus_message_unref (reply);
130 dbus_pending_call_unref (pending);
132 tally_event_reply ();
136 get_device_events_reply (DBusPendingCall *pending, void *user_data)
138 DBusMessage *reply = dbus_pending_call_steal_reply (pending);
139 DBusMessageIter iter, iter_array, iter_struct;
144 if (strncmp (dbus_message_get_signature (reply), "a(s", 3) != 0)
146 g_warning ("atk-bridge: get_device_events_reply: unknown signature");
150 dbus_message_iter_init (reply, &iter);
151 dbus_message_iter_recurse (&iter, &iter_array);
152 while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
155 dbus_message_iter_recurse (&iter_array, &iter_struct);
156 dbus_message_iter_get_basic (&iter_struct, &bus_name);
157 spi_atk_add_client (bus_name);
158 dbus_message_iter_next (&iter_array);
163 dbus_message_unref (reply);
165 dbus_pending_call_unref (pending);
167 tally_event_reply ();
171 get_registered_event_listeners (SpiBridge *app)
173 DBusMessage *message;
174 DBusPendingCall *pending = NULL;
176 message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
177 ATSPI_DBUS_PATH_REGISTRY,
178 ATSPI_DBUS_INTERFACE_REGISTRY,
179 "GetRegisteredEvents");
183 dbus_connection_send_with_reply (app->bus, message, &pending, -1);
184 dbus_message_unref (message);
187 spi_global_app_data->events_initialized = TRUE;
190 dbus_pending_call_set_notify (pending, get_events_reply, NULL, NULL);
192 message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
194 ATSPI_DBUS_INTERFACE_DEC,
195 "GetKeystrokeListeners");
199 dbus_connection_send_with_reply (app->bus, message, &pending, -1);
200 dbus_message_unref (message);
203 spi_global_app_data->events_initialized = TRUE;
206 dbus_pending_call_set_notify (pending, get_device_events_reply, NULL, NULL);
208 message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
210 ATSPI_DBUS_INTERFACE_DEC,
211 "GetDeviceEventListeners");
215 dbus_connection_send_with_reply (app->bus, message, &pending, -1);
216 dbus_message_unref (message);
219 spi_global_app_data->events_initialized = TRUE;
222 dbus_pending_call_set_notify (pending, get_device_events_reply, NULL, NULL);
226 register_reply (DBusPendingCall *pending, void *user_data)
229 SpiBridge *app = user_data;
231 reply = dbus_pending_call_steal_reply (pending);
232 dbus_pending_call_unref (pending);
235 gchar *app_name, *obj_path;
237 if (strcmp (dbus_message_get_signature (reply), "(so)") != 0)
239 g_warning ("AT-SPI: Could not obtain desktop path or name\n");
243 DBusMessageIter iter, iter_struct;
244 dbus_message_iter_init (reply, &iter);
245 dbus_message_iter_recurse (&iter, &iter_struct);
246 dbus_message_iter_get_basic (&iter_struct, &app_name);
247 dbus_message_iter_next (&iter_struct);
248 dbus_message_iter_get_basic (&iter_struct, &obj_path);
250 app->desktop_name = g_strdup (app_name);
251 app->desktop_path = g_strdup (obj_path);
256 g_warning ("AT-SPI: Could not embed inside desktop");
259 dbus_message_unref (reply);
261 get_registered_event_listeners (spi_global_app_data);
265 register_application (SpiBridge * app)
267 DBusMessage *message;
268 DBusMessageIter iter;
270 DBusPendingCall *pending;
271 const int max_addr_length = 128; /* should be long enough */
273 dbus_error_init (&error);
275 /* These will be overridden when we get a reply, but in practice these
276 defaults should always be correct */
277 app->desktop_name = ATSPI_DBUS_NAME_REGISTRY;
278 app->desktop_path = ATSPI_DBUS_PATH_ROOT;
280 message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
281 ATSPI_DBUS_PATH_ROOT,
282 ATSPI_DBUS_INTERFACE_SOCKET,
285 dbus_message_iter_init_append (message, &iter);
286 spi_object_append_reference (&iter, app->root);
288 if (!dbus_connection_send_with_reply (app->bus, message, &pending, -1)
294 dbus_pending_call_set_notify (pending, register_reply, app, NULL);
297 dbus_message_unref (message);
299 /* could this be better, we accept some amount of race in getting the temp name*/
300 /* make sure the directory exists */
301 mkdir ("/tmp/at-spi2/", S_IRWXU|S_IRWXG|S_IRWXO|S_ISVTX);
302 chmod ("/tmp/at-spi2/", S_IRWXU|S_IRWXG|S_IRWXO|S_ISVTX);
303 app->app_bus_addr = g_malloc(max_addr_length * sizeof(char));
305 sprintf (app->app_bus_addr, "unix:path=/tmp/at-spi2/socket-%d-%d", getpid(),
308 app->app_bus_addr [0] = '\0';
314 /*---------------------------------------------------------------------------*/
317 deregister_application (SpiBridge * app)
319 DBusMessage *message;
320 DBusMessageIter iter;
324 dbus_error_init (&error);
326 message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
327 ATSPI_DBUS_PATH_REGISTRY,
328 ATSPI_DBUS_INTERFACE_REGISTRY,
329 "DeregisterApplication");
330 dbus_message_set_no_reply (message, TRUE);
332 uname = dbus_bus_get_unique_name (app->bus);
334 dbus_message_iter_init_append (message, &iter);
335 dbus_message_iter_append_basic (&iter, DBUS_TYPE_STRING, &uname);
336 dbus_connection_send (app->bus, message, NULL);
338 dbus_message_unref (message);
341 /*---------------------------------------------------------------------------*/
343 /*---------------------------------------------------------------------------*/
345 static AtkPlugClass *plug_class;
346 static AtkSocketClass *socket_class;
349 get_plug_id (AtkPlug * plug)
351 const char *uname = dbus_bus_get_unique_name (spi_global_app_data->bus);
353 GString *str = g_string_new (NULL);
355 path = spi_register_object_to_path (spi_global_register, G_OBJECT (plug));
356 g_string_printf (str, "%s:%s", uname, path);
358 return g_string_free (str, FALSE);
362 socket_ref_state_set (AtkObject *accessible)
364 char *child_name, *child_path;
365 AtkSocket *socket = ATK_SOCKET (accessible);
369 DBusMessage *message, *reply;
370 DBusMessageIter iter, iter_array;
373 set = atk_state_set_new ();
375 if (!socket->embedded_plug_id)
378 child_name = g_strdup (socket->embedded_plug_id);
381 child_path = g_utf8_strchr (child_name + 1, -1, ':');
387 *(child_path++) = '\0';
388 message = dbus_message_new_method_call (child_name, child_path, ATSPI_DBUS_INTERFACE_ACCESSIBLE, "GetState");
390 reply = dbus_connection_send_with_reply_and_block (spi_global_app_data->bus, message, 1, NULL);
391 dbus_message_unref (message);
394 if (strcmp (dbus_message_get_signature (reply), "au") != 0)
396 dbus_message_unref (reply);
400 dbus_message_iter_init (reply, &iter);
401 dbus_message_iter_recurse (&iter, &iter_array);
404 dbus_message_iter_get_basic (&iter_array, &v);
405 for (j = 0; j < 32; j++)
409 AtkState state = spi_atk_state_from_spi_state ((count << 5) + j);
410 atk_state_set_add_state (set, state);
415 while (dbus_message_iter_next (&iter_array));
416 dbus_message_unref (reply);
421 socket_embed_hook (AtkSocket * socket, gchar * plug_id)
423 AtkObject *accessible = ATK_OBJECT(socket);
424 gchar *plug_name, *plug_path;
425 AtkObjectClass *klass;
427 /* Force registration */
428 gchar *path = spi_register_object_to_path (spi_global_register, G_OBJECT (accessible));
429 /* Let the plug know that it has been embedded */
430 plug_name = g_strdup (plug_id);
436 plug_path = g_utf8_strchr (plug_name + 1, -1, ':');
439 DBusMessage *message;
440 *(plug_path++) = '\0';
441 message = dbus_message_new_method_call (plug_name, plug_path, ATSPI_DBUS_INTERFACE_SOCKET, "Embedded");
442 dbus_message_append_args (message, DBUS_TYPE_STRING, &path, DBUS_TYPE_INVALID);
443 dbus_connection_send (spi_global_app_data->bus, message, NULL);
448 klass = ATK_OBJECT_GET_CLASS (accessible);
449 klass->ref_state_set = socket_ref_state_set;
453 install_plug_hooks ()
457 data = g_type_class_ref (ATK_TYPE_PLUG);
458 plug_class = ATK_PLUG_CLASS (data);
459 data = g_type_class_ref (ATK_TYPE_SOCKET);
460 socket_class = ATK_SOCKET_CLASS (data);
461 plug_class->get_object_id = get_plug_id;
462 socket_class->embed = socket_embed_hook;
466 get_ancestral_uid (uint pid)
472 gboolean got_ppid = 0;
473 gboolean got_uid = 0;
475 sprintf (buf, "/proc/%d/status", pid);
476 fp = fopen (buf, "r");
479 while ((!got_ppid || !got_uid) && fgets (buf, sizeof (buf), fp))
481 if (sscanf (buf, "PPid:\t%d", &ppid) == 1)
483 else if (sscanf (buf, "Uid:\t%d", &uid) == 1)
488 if (!got_ppid || !got_uid)
492 if (ppid == 0 || ppid == 1)
494 return get_ancestral_uid (ppid);
498 user_check (DBusConnection *bus, unsigned long uid, void *data)
500 if (uid == getuid () || uid == geteuid ())
503 return get_ancestral_uid (getpid ()) == uid;
508 new_connection_cb (DBusServer *server, DBusConnection *con, void *data)
510 dbus_connection_set_unix_user_function (con, user_check, NULL, NULL);
511 dbus_connection_ref(con);
512 atspi_dbus_connection_setup_with_g_main(con, NULL);
513 droute_intercept_dbus (con);
514 droute_context_register (spi_global_app_data->droute, con);
516 spi_global_app_data->direct_connections = g_list_append (spi_global_app_data->direct_connections, con);
526 dbus_error_init(&err);
527 server = dbus_server_listen(spi_global_app_data->app_bus_addr, &err);
530 g_warning ("atk-bridge: Couldn't listen on dbus server: %s", err.message);
531 dbus_error_init (&err);
532 spi_global_app_data->app_bus_addr [0] = '\0';
533 g_main_context_unref (spi_global_app_data->main_context);
534 spi_global_app_data->main_context = NULL;
538 atspi_dbus_server_setup_with_g_main(server, NULL);
539 dbus_server_set_new_connection_function(server, new_connection_cb, NULL, NULL);
541 spi_global_app_data->server = server;
548 gchar *atspi_dbus_name = NULL;
549 static gboolean atspi_no_register = FALSE;
551 static GOptionEntry atspi_option_entries[] = {
552 {"atspi-dbus-name", 0, 0, G_OPTION_ARG_STRING, &atspi_dbus_name,
553 "D-Bus bus name to register as", NULL},
554 {"atspi-no-register", 0, 0, G_OPTION_ARG_NONE, &atspi_no_register,
555 "Do not register with Registry Daemon", NULL},
560 introspect_children_cb (const char *path, void *data)
562 if (!strcmp (path, "/org/a11y/atspi/accessible"))
564 return g_strdup ("<node name=\"root\"/>\n");
565 /* TODO: Should we place the whole hierarchy here? */
571 handle_event_listener_registered (DBusConnection *bus, DBusMessage *message,
577 if (!dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &sender,
578 DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID))
581 add_event (sender, name);
585 remove_events (const char *bus_name, const char *event)
590 remove_data = g_strsplit (event, ":", 3);
596 for (list = spi_global_app_data->events; list;)
598 event_data *evdata = list->data;
599 if (!g_strcmp0 (evdata->bus_name, bus_name) &&
600 spi_event_is_subtype (evdata->data, remove_data))
602 GList *events = spi_global_app_data->events;
604 g_strfreev (evdata->data);
605 g_free (evdata->bus_name);
607 spi_global_app_data->events = g_list_remove (events, evdata);
615 g_strfreev (remove_data);
619 handle_event_listener_deregistered (DBusConnection *bus, DBusMessage *message,
625 if (!dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &sender,
626 DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID))
629 remove_events (sender, name);
633 handle_device_listener_registered (DBusConnection *bus, DBusMessage *message,
637 DBusMessageIter iter, iter_struct;
639 if (strncmp (dbus_message_get_signature (message), "(s", 2) != 0)
641 g_warning ("atk-bridge: handle_device_listener_register: unknown signature");
645 dbus_message_iter_init (message, &iter);
646 dbus_message_iter_recurse (&iter, &iter_struct);
647 dbus_message_iter_get_basic (&iter_struct, &sender);
648 spi_atk_add_client (sender);
651 static DBusHandlerResult
652 signal_filter (DBusConnection *bus, DBusMessage *message, void *user_data)
654 const char *interface = dbus_message_get_interface (message);
655 const char *member = dbus_message_get_member (message);
656 DBusHandlerResult result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
658 if (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_SIGNAL)
659 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
661 if (!strcmp (interface, ATSPI_DBUS_INTERFACE_REGISTRY))
663 result = DBUS_HANDLER_RESULT_HANDLED;
664 if (!strcmp (member, "EventListenerRegistered"))
665 handle_event_listener_registered (bus, message, user_data);
666 else if (!strcmp (member, "EventListenerDeregistered"))
667 handle_event_listener_deregistered (bus, message, user_data);
669 result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
671 else if (!strcmp (interface, ATSPI_DBUS_INTERFACE_DEVICE_EVENT_LISTENER))
673 result = DBUS_HANDLER_RESULT_HANDLED;
674 if (!strcmp (member, "KeystrokeListenerRegistered"))
675 handle_device_listener_registered (bus, message, user_data);
676 else if (!strcmp (member, "DeviceListenerRegistered"))
677 handle_device_listener_registered (bus, message, user_data);
679 result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
682 if (!g_strcmp0(interface, DBUS_INTERFACE_DBUS) &&
683 !g_strcmp0(member, "NameOwnerChanged"))
685 char *name, *old, *new;
686 result = DBUS_HANDLER_RESULT_HANDLED;
687 if (dbus_message_get_args (message, NULL,
688 DBUS_TYPE_STRING, &name,
689 DBUS_TYPE_STRING, &old,
690 DBUS_TYPE_STRING, &new,
693 if (*old != '\0' && *new == '\0')
694 spi_atk_remove_client (old);
702 * Checks the status of the environment variables
704 * At this moment it only checks NO_AT_BRIDGE
706 * Returns TRUE if there isn't anything on the environment preventing
707 * you to load the bridge, FALSE otherwise
714 envvar = g_getenv ("NO_AT_BRIDGE");
716 if (envvar && atoi (envvar) == 1)
725 * The following needs to be initialized.
727 * - DRoute for routing message to their accessible objects.
728 * - Event handlers for emmitting signals on specific ATK events.
729 * - setup the bus for p2p communication
730 * - Application registration with the AT-SPI registry.
734 atk_bridge_adaptor_init (gint * argc, gchar ** argv[])
740 static gboolean inited = FALSE;
741 gboolean load_bridge;
743 load_bridge = check_envvar ();
744 if (inited && !load_bridge)
745 g_warning ("ATK Bridge is disabled but a11y has already been enabled.");
747 if (inited || !load_bridge)
752 DRoutePath *treepath, *accpath;
754 root = atk_get_root ();
755 g_warn_if_fail (root);
762 /* Parse command line options */
763 opt = g_option_context_new (NULL);
764 g_option_context_add_main_entries (opt, atspi_option_entries, NULL);
765 g_option_context_set_ignore_unknown_options (opt, TRUE);
766 if (!g_option_context_parse (opt, argc, argv, &err))
767 g_warning ("AT-SPI Option parsing failed: %s\n", err->message);
768 g_option_context_free (opt);
770 /* Allocate global data and do ATK initializations */
771 spi_global_app_data = g_new0 (SpiBridge, 1);
772 spi_global_app_data->root = g_object_ref (root);
774 /* Set up D-Bus connection and register bus name */
775 dbus_error_init (&error);
776 spi_global_app_data->bus = atspi_get_a11y_bus ();
777 if (!spi_global_app_data->bus)
779 g_free (spi_global_app_data);
780 spi_global_app_data = NULL;
785 if (atspi_dbus_name != NULL)
787 if (dbus_bus_request_name
788 (spi_global_app_data->bus, atspi_dbus_name, 0, &error))
790 g_print ("AT-SPI Recieved D-Bus name - %s\n", atspi_dbus_name);
795 ("AT-SPI D-Bus name requested but could not be allocated - %s\n",
800 spi_global_app_data->main_context = g_main_context_new ();
802 atspi_dbus_connection_setup_with_g_main (spi_global_app_data->bus, NULL);
804 /* Hook our plug-and socket functions */
805 install_plug_hooks ();
808 * Create the leasing, register and cache objects.
809 * The order is important here, the cache depends on the
812 spi_global_register = g_object_new (SPI_REGISTER_TYPE, NULL);
813 spi_global_leasing = g_object_new (SPI_LEASING_TYPE, NULL);
814 spi_global_cache = g_object_new (SPI_CACHE_TYPE, NULL);
816 /* Register droute for routing AT-SPI messages */
817 spi_global_app_data->droute =
820 treepath = droute_add_one (spi_global_app_data->droute,
821 "/org/a11y/atspi/cache", spi_global_cache);
825 g_warning ("atk-bridge: Error in droute_add_one(). Already running?");
829 accpath = droute_add_many (spi_global_app_data->droute,
830 "/org/a11y/atspi/accessible",
832 introspect_children_cb,
834 (DRouteGetDatumFunction)
835 spi_global_register_path_to_object);
838 /* Register all interfaces with droute and set up application accessible db */
839 spi_initialize_cache (treepath);
840 spi_initialize_accessible (accpath);
841 spi_initialize_application (accpath);
842 spi_initialize_action (accpath);
843 spi_initialize_collection (accpath);
844 spi_initialize_component (accpath);
845 spi_initialize_document (accpath);
846 spi_initialize_editabletext (accpath);
847 spi_initialize_hyperlink (accpath);
848 spi_initialize_hypertext (accpath);
849 spi_initialize_image (accpath);
850 spi_initialize_selection (accpath);
851 spi_initialize_socket (accpath);
852 spi_initialize_table (accpath);
853 spi_initialize_text (accpath);
854 spi_initialize_value (accpath);
856 droute_context_register (spi_global_app_data->droute,
857 spi_global_app_data->bus);
859 /* Register methods to send D-Bus signals on certain ATK events */
860 spi_atk_register_event_listeners ();
862 /* Set up filter and match rules to catch signals */
863 dbus_bus_add_match (spi_global_app_data->bus, "type='signal', interface='org.a11y.atspi.Registry', sender='org.a11y.atspi.Registry'", NULL);
864 dbus_bus_add_match (spi_global_app_data->bus, "type='signal', interface='org.a11y.atspi.DeviceEventListener', sender='org.a11y.atspi.Registry'", NULL);
865 dbus_connection_add_filter (spi_global_app_data->bus, signal_filter, NULL,
868 /* Register this app by sending a signal out to AT-SPI registry daemon */
869 if (!atspi_no_register && (!root || !ATK_IS_PLUG (root)))
870 register_application (spi_global_app_data);
872 get_registered_event_listeners (spi_global_app_data);
880 atk_bridge_adaptor_cleanup (void)
885 if (!spi_global_app_data)
888 spi_atk_tidy_windows ();
889 spi_atk_deregister_event_listeners ();
891 deregister_application (spi_global_app_data);
893 if (spi_global_app_data->bus)
895 dbus_connection_remove_filter (spi_global_app_data->bus, signal_filter, NULL);
896 droute_context_unregister (spi_global_app_data->droute, spi_global_app_data->bus);
897 dbus_connection_unref (spi_global_app_data->bus);
900 for (l = spi_global_app_data->direct_connections; l; l = l->next)
902 DBusConnection *connection;
904 connection = l->data;
906 droute_context_unregister (spi_global_app_data->droute, connection);
907 droute_unintercept_dbus (connection);
908 dbus_connection_unref (connection);
910 g_list_free (spi_global_app_data->direct_connections);
912 for (ls = clients; ls; ls = ls->next)
914 g_slist_free (clients);
917 g_object_unref (spi_global_cache);
918 g_object_unref (spi_global_leasing);
919 g_object_unref (spi_global_register);
921 if (spi_global_app_data->main_context)
922 g_main_context_unref (spi_global_app_data->main_context);
924 droute_free (spi_global_app_data->droute);
926 g_free (spi_global_app_data);
927 spi_global_app_data = NULL;
930 /*---------------------------------------------------------------------------*/
932 static gchar *name_match_tmpl =
933 "type='signal', interface='org.freedesktop.DBus', member='NameOwnerChanged', arg0='%s'";
936 spi_atk_add_client (const char *bus_name)
941 for (l = clients; l; l = l->next)
943 if (!g_strcmp0 (l->data, bus_name))
946 if (!clients && spi_global_app_data->events_initialized)
947 spi_atk_register_event_listeners ();
948 clients = g_slist_append (clients, g_strdup (bus_name));
949 match = g_strdup_printf (name_match_tmpl, bus_name);
950 dbus_bus_add_match (spi_global_app_data->bus, match, NULL);
955 spi_atk_remove_client (const char *bus_name)
965 if (!g_strcmp0 (l->data, bus_name))
967 gchar *match = g_strdup_printf (name_match_tmpl, l->data);
968 dbus_bus_remove_match (spi_global_app_data->bus, match, NULL);
971 clients = g_slist_delete_link (clients, l);
973 spi_atk_deregister_event_listeners ();
980 /*END------------------------------------------------------------------------*/