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.
28 #include <droute/droute.h>
31 #include "accessible-register.h"
33 #include "common/spi-dbus.h"
35 static GArray *listener_ids = NULL;
37 static gint atk_bridge_key_event_listener_id;
38 static gint atk_bridge_focus_tracker_id;
40 /*---------------------------------------------------------------------------*/
42 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
43 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
44 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
45 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
47 /*---------------------------------------------------------------------------*/
49 typedef struct _SpiReentrantCallClosure
53 } SpiReentrantCallClosure;
56 switch_main_context (GMainContext *cnx)
60 dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
61 dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
62 for (list = spi_global_app_data->direct_connections; list; list = list->next)
63 dbus_connection_setup_with_g_main (list->data, cnx);
67 set_reply (DBusPendingCall * pending, void *user_data)
69 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
71 closure->reply = dbus_pending_call_steal_reply (pending);
72 switch_main_context (NULL);
73 g_main_loop_quit (closure->loop);
77 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
79 DBusPendingCall *pending;
80 SpiReentrantCallClosure closure;
81 GMainContext *main_context;
83 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
84 spi_global_app_data->main_context);
85 closure.loop = g_main_loop_new (main_context, FALSE);
86 switch_main_context (main_context);
88 if (!dbus_connection_send_with_reply (bus, message, &pending, -1))
90 switch_main_context (NULL);
93 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
94 g_main_loop_run (closure.loop);
96 g_main_loop_unref (closure.loop);
100 /*---------------------------------------------------------------------------*/
103 * Functionality related to sending device events from the application.
105 * This is used for forwarding key events on to the registry daemon.
109 Accessibility_DeviceEventController_NotifyListenersSync (const
110 Accessibility_DeviceEvent
113 DBusMessage *message;
115 dbus_bool_t consumed = FALSE;
118 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
120 SPI_DBUS_INTERFACE_DEC,
121 "NotifyListenersSync");
123 dbus_error_init (&error);
124 if (spi_dbus_marshal_deviceEvent (message, key_event))
127 send_and_allow_reentry (spi_global_app_data->bus, message);
131 dbus_error_init (&error);
132 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
134 dbus_message_unref (reply);
137 dbus_message_unref (message);
142 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
143 AtkKeyEventStruct * event)
145 keystroke->id = (dbus_int32_t) event->keyval;
146 keystroke->hw_code = (dbus_int16_t) event->keycode;
147 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
148 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
153 keystroke->event_string = g_strdup (event->string);
154 c = g_utf8_get_char_validated (event->string, -1);
155 if (c > 0 && g_unichar_isprint (c))
156 keystroke->is_text = TRUE;
158 keystroke->is_text = FALSE;
162 keystroke->event_string = g_strdup ("");
163 keystroke->is_text = FALSE;
167 case (ATK_KEY_EVENT_PRESS):
168 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
170 case (ATK_KEY_EVENT_RELEASE):
171 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
179 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
180 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
181 (int) keystroke->modifiers, keystroke->event_string,
182 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
188 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
191 Accessibility_DeviceEvent key_event;
193 spi_init_keystroke_from_atk_key_event (&key_event, event);
196 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
198 if (key_event.event_string)
199 g_free (key_event.event_string);
204 /*---------------------------------------------------------------------------*/
207 convert_signal_name (const gchar * s)
209 gchar *ret = g_strdup (s);
214 ret[0] = toupper (ret[0]);
215 while ((t = strchr (ret, '-')) != NULL)
217 memmove (t, t + 1, strlen (t));
224 replace_null (const gint type,
229 case DBUS_TYPE_STRING:
230 case DBUS_TYPE_OBJECT_PATH:
241 append_basic (DBusMessageIter *iter,
247 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
249 val = replace_null ((int) *type, val);
250 dbus_message_iter_append_basic(&sub, (int) *type, &val);
252 dbus_message_iter_close_container(iter, &sub);
256 append_rect (DBusMessageIter *iter,
260 DBusMessageIter variant, sub;
261 const AtkRectangle *rect = (const AtkRectangle *) val;
263 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
265 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
267 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
268 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
269 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
270 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
272 dbus_message_iter_close_container (&variant, &sub);
274 dbus_message_iter_close_container(iter, &variant);
278 append_object (DBusMessageIter *iter,
282 spi_object_append_v_reference (iter, ATK_OBJECT (val));
286 signal_name_to_dbus (const gchar *s)
288 gchar *ret = g_strdup (s);
293 ret [0] = toupper (ret [0]);
294 while ((t = strchr (ret, '-')) != NULL)
296 memmove (t, t + 1, strlen (t));
303 * Converts names of the form "active-descendant-changed" to
304 * "ActiveDescendantChanged"
307 ensure_proper_format (const char *name)
309 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
311 gboolean need_upper = TRUE;
319 *p++ = toupper (*name);
322 else if (*name == '-')
324 else if (*name == ':')
338 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
343 gboolean ret = FALSE;
346 data [0] = ensure_proper_format (klass + 21);
347 data [1] = ensure_proper_format (major);
348 data [2] = ensure_proper_format (minor);
351 /* Hack: events such as "object::text-changed::insert:system" as
352 generated by Gecko */
353 data [2][strcspn (data [2], ":")] = '\0';
354 for (list = spi_global_app_data->events; list; list = list->next)
357 if (spi_event_is_subtype (data, evdata->data))
371 * Emits an AT-SPI event.
372 * AT-SPI events names are split into three parts:
374 * This is mapped onto D-Bus events as:
375 * D-Bus Interface:Signal Name:Detail argument
377 * Marshals a basic type into the 'any_data' attribute of
381 emit_event (AtkObject *obj,
385 dbus_int32_t detail1,
386 dbus_int32_t detail2,
389 void (*append_variant) (DBusMessageIter *, const char *, const void *))
391 DBusConnection *bus = spi_global_app_data->bus;
392 const char *path = spi_register_object_to_path (spi_global_register,
397 DBusMessageIter iter, iter_struct;
399 if (!klass) klass = "";
400 if (!major) major = "";
401 if (!minor) minor = "";
402 if (!type) type = "u";
404 if (!signal_is_needed (klass, major, minor))
408 * This is very annoying, but as '-' isn't a legal signal
409 * name in D-Bus (Why not??!?) The names need converting
410 * on this side, and again on the client side.
412 cname = signal_name_to_dbus (major);
413 sig = dbus_message_new_signal(path, klass, cname);
416 dbus_message_iter_init_append(sig, &iter);
418 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
419 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
420 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
421 append_variant (&iter, type, val);
422 spi_object_append_reference (&iter, spi_global_app_data->root);
424 dbus_connection_send(bus, sig, NULL);
425 dbus_message_unref(sig);
427 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
428 spi_object_lease_if_needed (G_OBJECT (obj));
431 /*---------------------------------------------------------------------------*/
434 * The focus listener handles the ATK 'focus' signal and forwards it
435 * as the AT-SPI event, 'focus:'
438 focus_tracker (AtkObject * accessible)
440 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
441 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
444 /*---------------------------------------------------------------------------*/
446 #define PCHANGE "PropertyChange"
449 * This handler handles the following ATK signals and
450 * converts them to AT-SPI events:
452 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
454 * The property-name is part of the ATK property-change signal.
457 property_event_listener (GSignalInvocationHint * signal_hint,
458 guint n_param_values,
459 const GValue * param_values, gpointer data)
461 AtkObject *accessible;
462 AtkPropertyValues *values;
464 const gchar *pname = NULL;
470 accessible = g_value_get_object (¶m_values[0]);
471 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
473 pname = values[0].property_name;
475 /* TODO Could improve this control statement by matching
476 * on only the end of the signal names,
478 if (strcmp (pname, "accessible-name") == 0)
480 s1 = atk_object_get_name (accessible);
482 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
483 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
485 else if (strcmp (pname, "accessible-description") == 0)
487 s1 = atk_object_get_description (accessible);
489 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
490 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
492 else if (strcmp (pname, "accessible-parent") == 0)
494 otemp = atk_object_get_parent (accessible);
496 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
497 "(so)", otemp, append_object);
499 else if (strcmp (pname, "accessible-role") == 0)
501 i = atk_object_get_role (accessible);
502 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
503 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
505 else if (strcmp (pname, "accessible-table-summary") == 0)
507 otemp = atk_table_get_summary (ATK_TABLE (accessible));
509 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
510 "(so)", otemp, append_object);
512 else if (strcmp (pname, "accessible-table-column-header") == 0)
514 i = g_value_get_int (&(values->new_value));
515 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
517 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
518 "(so)", otemp, append_object);
520 else if (strcmp (pname, "accessible-table-row-header") == 0)
522 i = g_value_get_int (&(values->new_value));
523 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
525 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
526 "(so)", otemp, append_object);
528 else if (strcmp (pname, "accessible-table-row-description") == 0)
530 i = g_value_get_int (&(values->new_value));
531 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
532 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
533 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
535 else if (strcmp (pname, "accessible-table-column-description") == 0)
537 i = g_value_get_int (&(values->new_value));
538 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
539 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
540 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
542 else if (strcmp (pname, "accessible-table-caption-object") == 0)
544 otemp = atk_table_get_caption (ATK_TABLE (accessible));
545 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
546 "(so)", otemp, append_object);
550 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
551 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
556 /*---------------------------------------------------------------------------*/
558 #define STATE_CHANGED "state-changed"
561 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
562 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
563 * the param-name is part of the ATK state-change signal.
566 state_event_listener (GSignalInvocationHint * signal_hint,
567 guint n_param_values,
568 const GValue * param_values, gpointer data)
570 AtkObject *accessible;
574 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
575 pname = g_strdup (g_value_get_string (¶m_values[1]));
577 /* TODO - Possibly ignore a change to the 'defunct' state.
578 * This is because without reference counting defunct objects should be removed.
580 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
581 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
582 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
587 /*---------------------------------------------------------------------------*/
590 * The window event listener handles the following ATK signals and forwards
591 * them as AT-SPI events:
593 * window:create -> window:create
594 * window:destroy -> window:destroy
595 * window:minimize -> window:minimize
596 * window:maximize -> window:maximize
597 * window:activate -> window:activate
598 * window:deactivate -> window:deactivate
601 window_event_listener (GSignalInvocationHint * signal_hint,
602 guint n_param_values,
603 const GValue * param_values, gpointer data)
605 AtkObject *accessible;
606 GSignalQuery signal_query;
607 const gchar *name, *s;
609 g_signal_query (signal_hint->signal_id, &signal_query);
610 name = signal_query.signal_name;
612 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
613 s = atk_object_get_name (accessible);
614 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
615 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
620 /*---------------------------------------------------------------------------*/
623 * The document event listener handles the following ATK signals
624 * and converts them to AT-SPI events:
626 * Gtk:AtkDocument:load-complete -> document:load-complete
627 * Gtk:AtkDocument:load-stopped -> document:load-stopped
628 * Gtk:AtkDocument:reload -> document:reload
631 document_event_listener (GSignalInvocationHint * signal_hint,
632 guint n_param_values,
633 const GValue * param_values, gpointer data)
635 AtkObject *accessible;
636 GSignalQuery signal_query;
637 const gchar *name, *s;
639 g_signal_query (signal_hint->signal_id, &signal_query);
640 name = signal_query.signal_name;
642 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
643 s = atk_object_get_name (accessible);
644 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
645 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
650 /*---------------------------------------------------------------------------*/
653 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
654 * this to an AT-SPI event - "object:bounds-changed".
657 bounds_event_listener (GSignalInvocationHint * signal_hint,
658 guint n_param_values,
659 const GValue * param_values, gpointer data)
661 AtkObject *accessible;
662 AtkRectangle *atk_rect;
663 GSignalQuery signal_query;
664 const gchar *name, *s;
666 g_signal_query (signal_hint->signal_id, &signal_query);
667 name = signal_query.signal_name;
669 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
671 if (G_VALUE_HOLDS_BOXED (param_values + 1))
673 atk_rect = g_value_get_boxed (param_values + 1);
675 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
676 "(iiii)", atk_rect, append_rect);
681 /*---------------------------------------------------------------------------*/
684 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
685 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
689 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
690 guint n_param_values,
691 const GValue * param_values, gpointer data)
693 AtkObject *accessible;
695 GSignalQuery signal_query;
696 const gchar *name, *minor;
699 g_signal_query (signal_hint->signal_id, &signal_query);
700 name = signal_query.signal_name;
702 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
703 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
704 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
705 minor = g_quark_to_string (signal_hint->detail);
707 detail1 = atk_object_get_index_in_parent (child);
709 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
710 "(so)", child, append_object);
714 /*---------------------------------------------------------------------------*/
717 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
718 * converts it to the AT-SPI signal - 'object:link-selected'
722 link_selected_event_listener (GSignalInvocationHint * signal_hint,
723 guint n_param_values,
724 const GValue * param_values, gpointer data)
726 AtkObject *accessible;
727 GSignalQuery signal_query;
728 const gchar *name, *minor;
731 g_signal_query (signal_hint->signal_id, &signal_query);
732 name = signal_query.signal_name;
734 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
735 minor = g_quark_to_string (signal_hint->detail);
737 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
738 detail1 = g_value_get_int (¶m_values[1]);
740 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
741 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
745 /*---------------------------------------------------------------------------*/
748 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
749 * converts it to the AT-SPI signal - 'object:text-changed'
753 text_changed_event_listener (GSignalInvocationHint * signal_hint,
754 guint n_param_values,
755 const GValue * param_values, gpointer data)
757 AtkObject *accessible;
758 GSignalQuery signal_query;
759 const gchar *name, *minor;
761 gint detail1, detail2;
763 g_signal_query (signal_hint->signal_id, &signal_query);
764 name = signal_query.signal_name;
766 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
767 minor = g_quark_to_string (signal_hint->detail);
769 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
770 detail1 = g_value_get_int (¶m_values[1]);
772 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
773 detail2 = g_value_get_int (¶m_values[2]);
776 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
778 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
779 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
783 /*---------------------------------------------------------------------------*/
786 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
787 * converts it to the AT-SPI signal - 'object:text-selection-changed'
791 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
792 guint n_param_values,
793 const GValue * param_values,
796 AtkObject *accessible;
797 GSignalQuery signal_query;
798 const gchar *name, *minor;
799 gint detail1, detail2;
801 g_signal_query (signal_hint->signal_id, &signal_query);
802 name = signal_query.signal_name;
804 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
805 minor = g_quark_to_string (signal_hint->detail);
807 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
808 detail1 = g_value_get_int (¶m_values[1]);
810 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
811 detail2 = g_value_get_int (¶m_values[2]);
813 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
814 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
818 /*---------------------------------------------------------------------------*/
821 * Children changed signal converter and forwarder.
823 * Klass (Interface) org.a11y.atspi.Event.Object
824 * Major is the signal name.
825 * Minor is 'add' or 'remove'
826 * detail1 is the index.
828 * any_data is the child reference.
831 children_changed_event_listener (GSignalInvocationHint * signal_hint,
832 guint n_param_values,
833 const GValue * param_values, gpointer data)
835 GSignalQuery signal_query;
836 const gchar *name, *minor;
837 gint detail1, detail2 = 0;
839 AtkObject *accessible, *ao=NULL;
842 g_signal_query (signal_hint->signal_id, &signal_query);
843 name = signal_query.signal_name;
845 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
846 minor = g_quark_to_string (signal_hint->detail);
848 detail1 = g_value_get_uint (param_values + 1);
849 child = g_value_get_pointer (param_values + 2);
851 if (ATK_IS_OBJECT (child))
853 ao = ATK_OBJECT (child);
854 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
855 "(so)", ao, append_object);
857 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
859 ao = atk_object_ref_accessible_child (accessible,
861 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
862 "(so)", ao, append_object);
866 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
867 "(so)", ao, append_object);
873 /*---------------------------------------------------------------------------*/
876 toplevel_added_event_listener (AtkObject * accessible,
877 guint index, AtkObject * child)
879 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
880 "(so)", child, append_object);
884 toplevel_removed_event_listener (AtkObject * accessible,
885 guint index, AtkObject * child)
887 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
888 "(so)", child, append_object);
891 /*---------------------------------------------------------------------------*/
894 * Generic signal converter and forwarder.
896 * Klass (Interface) org.a11y.atspi.Event.Object
897 * Major is the signal name.
904 generic_event_listener (GSignalInvocationHint * signal_hint,
905 guint n_param_values,
906 const GValue * param_values, gpointer data)
908 AtkObject *accessible;
909 GSignalQuery signal_query;
911 int detail1 = 0, detail2 = 0;
913 g_signal_query (signal_hint->signal_id, &signal_query);
914 name = signal_query.signal_name;
916 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
918 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
919 detail1 = g_value_get_int (¶m_values[1]);
921 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
922 detail2 = g_value_get_int (¶m_values[2]);
924 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
925 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
929 /*---------------------------------------------------------------------------*/
932 * Registers the provided function as a handler for the given signal name
933 * and stores the signal id returned so that the function may be
934 * de-registered later.
937 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
941 id = atk_add_global_event_listener (listener, signal_name);
942 g_array_append_val (listener_ids, id);
946 * Initialization for the signal handlers.
948 * Registers all required signal handlers.
951 spi_atk_register_event_listeners (void)
954 * Kludge to make sure the Atk interface types are registered, otherwise
955 * the AtkText signal handlers below won't get registered
957 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
958 AtkObject *bo = atk_no_op_object_new (ao);
960 g_object_unref (G_OBJECT (bo));
963 /* Register for focus event notifications, and register app with central registry */
964 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
966 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
968 add_signal_listener (property_event_listener,
969 "Gtk:AtkObject:property-change");
970 add_signal_listener (window_event_listener, "window:create");
971 add_signal_listener (window_event_listener, "window:destroy");
972 add_signal_listener (window_event_listener, "window:minimize");
973 add_signal_listener (window_event_listener, "window:maximize");
974 add_signal_listener (window_event_listener, "window:restore");
975 add_signal_listener (window_event_listener, "window:activate");
976 add_signal_listener (window_event_listener, "window:deactivate");
977 add_signal_listener (document_event_listener,
978 "Gtk:AtkDocument:load-complete");
979 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
980 add_signal_listener (document_event_listener,
981 "Gtk:AtkDocument:load-stopped");
982 /* TODO Fake this event on the client side */
983 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
985 add_signal_listener (active_descendant_event_listener,
986 "Gtk:AtkObject:active-descendant-changed");
987 add_signal_listener (bounds_event_listener,
988 "Gtk:AtkComponent:bounds-changed");
989 add_signal_listener (text_selection_changed_event_listener,
990 "Gtk:AtkText:text-selection-changed");
991 add_signal_listener (text_changed_event_listener,
992 "Gtk:AtkText:text-changed");
993 add_signal_listener (link_selected_event_listener,
994 "Gtk:AtkHypertext:link-selected");
995 add_signal_listener (generic_event_listener,
996 "Gtk:AtkObject:visible-data-changed");
997 add_signal_listener (generic_event_listener,
998 "Gtk:AtkSelection:selection-changed");
999 add_signal_listener (generic_event_listener,
1000 "Gtk:AtkText:text-attributes-changed");
1001 add_signal_listener (generic_event_listener,
1002 "Gtk:AtkText:text-caret-moved");
1003 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1004 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1005 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1006 add_signal_listener (generic_event_listener,
1007 "Gtk:AtkTable:column-inserted");
1008 add_signal_listener (generic_event_listener,
1009 "Gtk:AtkTable:column-reordered");
1010 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1011 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1013 /* Children signal listeners */
1014 atk_add_global_event_listener (children_changed_event_listener,
1015 "Gtk:AtkObject:children-changed");
1018 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1019 "children-changed::add",
1020 (GCallback) toplevel_added_event_listener, NULL);
1022 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1023 "children-changed::remove",
1024 (GCallback) toplevel_removed_event_listener, NULL);
1028 * May add the following listeners to implement preemptive key listening for GTK+
1030 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1031 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1033 atk_bridge_key_event_listener_id =
1034 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1037 /*---------------------------------------------------------------------------*/
1040 * De-registers all ATK signal handlers.
1043 spi_atk_deregister_event_listeners (void)
1046 GArray *ids = listener_ids;
1047 listener_ids = NULL;
1049 if (atk_bridge_focus_tracker_id)
1050 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1052 for (i = 0; ids && i < ids->len; i++)
1054 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1057 if (atk_bridge_key_event_listener_id)
1058 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1061 /*---------------------------------------------------------------------------*/
1064 * TODO This function seems out of place here.
1066 * Emits fake deactivate signals on all top-level windows.
1067 * Used when shutting down AT-SPI, ensuring that all
1068 * windows have been removed on the client side.
1071 spi_atk_tidy_windows (void)
1077 root = atk_get_root ();
1078 n_children = atk_object_get_n_accessible_children (root);
1079 for (i = 0; i < n_children; i++)
1082 AtkStateSet *stateset;
1085 child = atk_object_ref_accessible_child (root, i);
1086 stateset = atk_object_ref_state_set (child);
1088 name = atk_object_get_name (child);
1089 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1091 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1092 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1094 g_object_unref (stateset);
1096 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1097 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1098 g_object_unref (child);
1103 spi_event_is_subtype (gchar **needle, gchar **haystack)
1105 while (*haystack && **haystack)
1107 if (g_strcmp0 (*needle, *haystack))
1115 /*END------------------------------------------------------------------------*/