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)
59 /* This code won't work on dbus-glib earlier than 0.9.0 because of FDO#30574 */
62 dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
63 dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
64 for (list = spi_global_app_data->direct_connections; list; list = list->next)
65 dbus_connection_setup_with_g_main (list->data, cnx);
70 set_reply (DBusPendingCall * pending, void *user_data)
72 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
74 closure->reply = dbus_pending_call_steal_reply (pending);
75 dbus_pending_call_unref (pending);
76 switch_main_context (NULL);
77 g_main_loop_quit (closure->loop);
81 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
83 DBusPendingCall *pending;
84 SpiReentrantCallClosure closure;
85 GMainContext *main_context;
87 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
88 spi_global_app_data->main_context);
89 closure.loop = g_main_loop_new (main_context, FALSE);
90 switch_main_context (main_context);
92 if (!dbus_connection_send_with_reply (bus, message, &pending, -1) || !pending)
94 switch_main_context (NULL);
97 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
98 g_main_loop_run (closure.loop);
100 g_main_loop_unref (closure.loop);
101 return closure.reply;
104 /*---------------------------------------------------------------------------*/
107 * Functionality related to sending device events from the application.
109 * This is used for forwarding key events on to the registry daemon.
113 Accessibility_DeviceEventController_NotifyListenersSync (const
114 Accessibility_DeviceEvent
117 DBusMessage *message;
119 dbus_bool_t consumed = FALSE;
122 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
124 SPI_DBUS_INTERFACE_DEC,
125 "NotifyListenersSync");
127 dbus_error_init (&error);
128 if (spi_dbus_marshal_deviceEvent (message, key_event))
131 send_and_allow_reentry (spi_global_app_data->bus, message);
135 dbus_error_init (&error);
136 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
138 dbus_message_unref (reply);
141 dbus_message_unref (message);
146 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
147 AtkKeyEventStruct * event)
149 keystroke->id = (dbus_int32_t) event->keyval;
150 keystroke->hw_code = (dbus_int16_t) event->keycode;
151 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
152 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
157 keystroke->event_string = g_strdup (event->string);
158 c = g_utf8_get_char_validated (event->string, -1);
159 if (c > 0 && g_unichar_isprint (c))
160 keystroke->is_text = TRUE;
162 keystroke->is_text = FALSE;
166 keystroke->event_string = g_strdup ("");
167 keystroke->is_text = FALSE;
171 case (ATK_KEY_EVENT_PRESS):
172 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
174 case (ATK_KEY_EVENT_RELEASE):
175 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
183 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
184 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
185 (int) keystroke->modifiers, keystroke->event_string,
186 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
192 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
195 Accessibility_DeviceEvent key_event;
197 spi_init_keystroke_from_atk_key_event (&key_event, event);
200 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
202 if (key_event.event_string)
203 g_free (key_event.event_string);
208 /*---------------------------------------------------------------------------*/
211 convert_signal_name (const gchar * s)
213 gchar *ret = g_strdup (s);
218 ret[0] = toupper (ret[0]);
219 while ((t = strchr (ret, '-')) != NULL)
221 memmove (t, t + 1, strlen (t));
228 replace_null (const gint type,
233 case DBUS_TYPE_STRING:
234 case DBUS_TYPE_OBJECT_PATH:
245 append_basic (DBusMessageIter *iter,
251 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
253 val = replace_null ((int) *type, val);
254 dbus_message_iter_append_basic(&sub, (int) *type, &val);
256 dbus_message_iter_close_container(iter, &sub);
260 append_rect (DBusMessageIter *iter,
264 DBusMessageIter variant, sub;
265 const AtkRectangle *rect = (const AtkRectangle *) val;
267 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
269 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
271 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
272 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
273 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
274 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
276 dbus_message_iter_close_container (&variant, &sub);
278 dbus_message_iter_close_container(iter, &variant);
282 append_object (DBusMessageIter *iter,
286 spi_object_append_v_reference (iter, ATK_OBJECT (val));
290 signal_name_to_dbus (const gchar *s)
292 gchar *ret = g_strdup (s);
297 ret [0] = toupper (ret [0]);
298 while ((t = strchr (ret, '-')) != NULL)
300 memmove (t, t + 1, strlen (t));
307 * Converts names of the form "active-descendant-changed" to
308 * "ActiveDescendantChanged"
311 ensure_proper_format (const char *name)
313 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
315 gboolean need_upper = TRUE;
323 *p++ = toupper (*name);
326 else if (*name == '-')
328 else if (*name == ':')
342 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
347 gboolean ret = FALSE;
350 if (!spi_global_app_data->events_initialized)
353 data [0] = ensure_proper_format (klass + 21);
354 data [1] = ensure_proper_format (major);
355 data [2] = ensure_proper_format (minor);
358 /* Hack: events such as "object::text-changed::insert:system" as
359 generated by Gecko */
360 data [2][strcspn (data [2], ":")] = '\0';
361 for (list = spi_global_app_data->events; list; list = list->next)
364 if (spi_event_is_subtype (data, evdata->data))
378 * Emits an AT-SPI event.
379 * AT-SPI events names are split into three parts:
381 * This is mapped onto D-Bus events as:
382 * D-Bus Interface:Signal Name:Detail argument
384 * Marshals a basic type into the 'any_data' attribute of
388 emit_event (AtkObject *obj,
392 dbus_int32_t detail1,
393 dbus_int32_t detail2,
396 void (*append_variant) (DBusMessageIter *, const char *, const void *))
398 DBusConnection *bus = spi_global_app_data->bus;
399 const char *path = spi_register_object_to_path (spi_global_register,
404 DBusMessageIter iter, iter_struct;
406 if (!klass) klass = "";
407 if (!major) major = "";
408 if (!minor) minor = "";
409 if (!type) type = "u";
411 if (!signal_is_needed (klass, major, minor))
415 * This is very annoying, but as '-' isn't a legal signal
416 * name in D-Bus (Why not??!?) The names need converting
417 * on this side, and again on the client side.
419 cname = signal_name_to_dbus (major);
420 sig = dbus_message_new_signal(path, klass, cname);
422 dbus_message_iter_init_append(sig, &iter);
424 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
425 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
426 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
427 append_variant (&iter, type, val);
428 spi_object_append_reference (&iter, spi_global_app_data->root);
430 dbus_connection_send(bus, sig, NULL);
431 dbus_message_unref(sig);
433 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
434 spi_object_lease_if_needed (G_OBJECT (obj));
439 /*---------------------------------------------------------------------------*/
442 * The focus listener handles the ATK 'focus' signal and forwards it
443 * as the AT-SPI event, 'focus:'
446 focus_tracker (AtkObject * accessible)
448 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
449 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
452 /*---------------------------------------------------------------------------*/
454 #define PCHANGE "PropertyChange"
457 * This handler handles the following ATK signals and
458 * converts them to AT-SPI events:
460 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
462 * The property-name is part of the ATK property-change signal.
465 property_event_listener (GSignalInvocationHint * signal_hint,
466 guint n_param_values,
467 const GValue * param_values, gpointer data)
469 AtkObject *accessible;
470 AtkPropertyValues *values;
472 const gchar *pname = NULL;
478 accessible = g_value_get_object (¶m_values[0]);
479 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
481 pname = values[0].property_name;
483 /* TODO Could improve this control statement by matching
484 * on only the end of the signal names,
486 if (strcmp (pname, "accessible-name") == 0)
488 s1 = atk_object_get_name (accessible);
490 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
491 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
493 else if (strcmp (pname, "accessible-description") == 0)
495 s1 = atk_object_get_description (accessible);
497 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
498 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
500 else if (strcmp (pname, "accessible-parent") == 0)
502 otemp = atk_object_get_parent (accessible);
504 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
505 "(so)", otemp, append_object);
507 else if (strcmp (pname, "accessible-role") == 0)
509 i = atk_object_get_role (accessible);
510 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
511 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
513 else if (strcmp (pname, "accessible-table-summary") == 0)
515 otemp = atk_table_get_summary (ATK_TABLE (accessible));
517 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
518 "(so)", otemp, append_object);
520 else if (strcmp (pname, "accessible-table-column-header") == 0)
522 i = g_value_get_int (&(values->new_value));
523 otemp = atk_table_get_column_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-header") == 0)
530 i = g_value_get_int (&(values->new_value));
531 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
533 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
534 "(so)", otemp, append_object);
536 else if (strcmp (pname, "accessible-table-row-description") == 0)
538 i = g_value_get_int (&(values->new_value));
539 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
540 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
541 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
543 else if (strcmp (pname, "accessible-table-column-description") == 0)
545 i = g_value_get_int (&(values->new_value));
546 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
547 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
548 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
550 else if (strcmp (pname, "accessible-table-caption-object") == 0)
552 otemp = atk_table_get_caption (ATK_TABLE (accessible));
553 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
554 "(so)", otemp, append_object);
558 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
559 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
564 /*---------------------------------------------------------------------------*/
566 #define STATE_CHANGED "state-changed"
569 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
570 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
571 * the param-name is part of the ATK state-change signal.
574 state_event_listener (GSignalInvocationHint * signal_hint,
575 guint n_param_values,
576 const GValue * param_values, gpointer data)
578 AtkObject *accessible;
582 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
583 pname = g_strdup (g_value_get_string (¶m_values[1]));
585 /* TODO - Possibly ignore a change to the 'defunct' state.
586 * This is because without reference counting defunct objects should be removed.
588 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
589 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
590 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
595 /*---------------------------------------------------------------------------*/
598 * The window event listener handles the following ATK signals and forwards
599 * them as AT-SPI events:
601 * window:create -> window:create
602 * window:destroy -> window:destroy
603 * window:minimize -> window:minimize
604 * window:maximize -> window:maximize
605 * window:activate -> window:activate
606 * window:deactivate -> window:deactivate
609 window_event_listener (GSignalInvocationHint * signal_hint,
610 guint n_param_values,
611 const GValue * param_values, gpointer data)
613 AtkObject *accessible;
614 GSignalQuery signal_query;
615 const gchar *name, *s;
617 g_signal_query (signal_hint->signal_id, &signal_query);
618 name = signal_query.signal_name;
620 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
621 s = atk_object_get_name (accessible);
622 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
623 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
628 /*---------------------------------------------------------------------------*/
631 * The document event listener handles the following ATK signals
632 * and converts them to AT-SPI events:
634 * Gtk:AtkDocument:load-complete -> document:load-complete
635 * Gtk:AtkDocument:load-stopped -> document:load-stopped
636 * Gtk:AtkDocument:reload -> document:reload
639 document_event_listener (GSignalInvocationHint * signal_hint,
640 guint n_param_values,
641 const GValue * param_values, gpointer data)
643 AtkObject *accessible;
644 GSignalQuery signal_query;
645 const gchar *name, *s;
647 g_signal_query (signal_hint->signal_id, &signal_query);
648 name = signal_query.signal_name;
650 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
651 s = atk_object_get_name (accessible);
652 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
653 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
658 /*---------------------------------------------------------------------------*/
661 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
662 * this to an AT-SPI event - "object:bounds-changed".
665 bounds_event_listener (GSignalInvocationHint * signal_hint,
666 guint n_param_values,
667 const GValue * param_values, gpointer data)
669 AtkObject *accessible;
670 AtkRectangle *atk_rect;
671 GSignalQuery signal_query;
672 const gchar *name, *s;
674 g_signal_query (signal_hint->signal_id, &signal_query);
675 name = signal_query.signal_name;
677 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
679 if (G_VALUE_HOLDS_BOXED (param_values + 1))
681 atk_rect = g_value_get_boxed (param_values + 1);
683 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
684 "(iiii)", atk_rect, append_rect);
689 /*---------------------------------------------------------------------------*/
692 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
693 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
697 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
698 guint n_param_values,
699 const GValue * param_values, gpointer data)
701 AtkObject *accessible;
703 GSignalQuery signal_query;
704 const gchar *name, *minor;
707 g_signal_query (signal_hint->signal_id, &signal_query);
708 name = signal_query.signal_name;
710 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
711 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
712 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
713 minor = g_quark_to_string (signal_hint->detail);
715 detail1 = atk_object_get_index_in_parent (child);
717 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
718 "(so)", child, append_object);
722 /*---------------------------------------------------------------------------*/
725 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
726 * converts it to the AT-SPI signal - 'object:link-selected'
730 link_selected_event_listener (GSignalInvocationHint * signal_hint,
731 guint n_param_values,
732 const GValue * param_values, gpointer data)
734 AtkObject *accessible;
735 GSignalQuery signal_query;
736 const gchar *name, *minor;
739 g_signal_query (signal_hint->signal_id, &signal_query);
740 name = signal_query.signal_name;
742 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
743 minor = g_quark_to_string (signal_hint->detail);
745 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
746 detail1 = g_value_get_int (¶m_values[1]);
748 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
749 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
753 /*---------------------------------------------------------------------------*/
756 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
757 * converts it to the AT-SPI signal - 'object:text-changed'
761 text_changed_event_listener (GSignalInvocationHint * signal_hint,
762 guint n_param_values,
763 const GValue * param_values, gpointer data)
765 AtkObject *accessible;
766 GSignalQuery signal_query;
767 const gchar *name, *minor;
769 gint detail1, detail2;
771 g_signal_query (signal_hint->signal_id, &signal_query);
772 name = signal_query.signal_name;
774 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
775 minor = g_quark_to_string (signal_hint->detail);
777 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
778 detail1 = g_value_get_int (¶m_values[1]);
780 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
781 detail2 = g_value_get_int (¶m_values[2]);
784 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
786 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
787 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
791 /*---------------------------------------------------------------------------*/
794 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
795 * converts it to the AT-SPI signal - 'object:text-selection-changed'
799 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
800 guint n_param_values,
801 const GValue * param_values,
804 AtkObject *accessible;
805 GSignalQuery signal_query;
806 const gchar *name, *minor;
807 gint detail1, detail2;
809 g_signal_query (signal_hint->signal_id, &signal_query);
810 name = signal_query.signal_name;
812 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
813 minor = g_quark_to_string (signal_hint->detail);
815 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
816 detail1 = g_value_get_int (¶m_values[1]);
818 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
819 detail2 = g_value_get_int (¶m_values[2]);
821 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
822 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
826 /*---------------------------------------------------------------------------*/
829 * Children changed signal converter and forwarder.
831 * Klass (Interface) org.a11y.atspi.Event.Object
832 * Major is the signal name.
833 * Minor is 'add' or 'remove'
834 * detail1 is the index.
836 * any_data is the child reference.
839 children_changed_event_listener (GSignalInvocationHint * signal_hint,
840 guint n_param_values,
841 const GValue * param_values, gpointer data)
843 GSignalQuery signal_query;
844 const gchar *name, *minor;
845 gint detail1, detail2 = 0;
847 AtkObject *accessible, *ao=NULL;
850 g_signal_query (signal_hint->signal_id, &signal_query);
851 name = signal_query.signal_name;
853 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
854 minor = g_quark_to_string (signal_hint->detail);
856 detail1 = g_value_get_uint (param_values + 1);
857 child = g_value_get_pointer (param_values + 2);
859 if (ATK_IS_OBJECT (child))
861 ao = ATK_OBJECT (child);
862 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
863 "(so)", ao, append_object);
865 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
867 ao = atk_object_ref_accessible_child (accessible,
869 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
870 "(so)", ao, append_object);
874 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
875 "(so)", ao, append_object);
881 /*---------------------------------------------------------------------------*/
884 toplevel_added_event_listener (AtkObject * accessible,
885 guint index, AtkObject * child)
887 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
888 "(so)", child, append_object);
892 toplevel_removed_event_listener (AtkObject * accessible,
893 guint index, AtkObject * child)
895 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
896 "(so)", child, append_object);
899 /*---------------------------------------------------------------------------*/
902 * Generic signal converter and forwarder.
904 * Klass (Interface) org.a11y.atspi.Event.Object
905 * Major is the signal name.
912 generic_event_listener (GSignalInvocationHint * signal_hint,
913 guint n_param_values,
914 const GValue * param_values, gpointer data)
916 AtkObject *accessible;
917 GSignalQuery signal_query;
919 int detail1 = 0, detail2 = 0;
921 g_signal_query (signal_hint->signal_id, &signal_query);
922 name = signal_query.signal_name;
924 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
926 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
927 detail1 = g_value_get_int (¶m_values[1]);
929 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
930 detail2 = g_value_get_int (¶m_values[2]);
932 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
933 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
937 /*---------------------------------------------------------------------------*/
940 * Registers the provided function as a handler for the given signal name
941 * and stores the signal id returned so that the function may be
942 * de-registered later.
945 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
949 id = atk_add_global_event_listener (listener, signal_name);
950 g_array_append_val (listener_ids, id);
954 * Initialization for the signal handlers.
956 * Registers all required signal handlers.
959 spi_atk_register_event_listeners (void)
962 * Kludge to make sure the Atk interface types are registered, otherwise
963 * the AtkText signal handlers below won't get registered
965 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
966 AtkObject *bo = atk_no_op_object_new (ao);
968 g_object_unref (G_OBJECT (bo));
971 /* Register for focus event notifications, and register app with central registry */
972 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
974 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
976 add_signal_listener (property_event_listener,
977 "Gtk:AtkObject:property-change");
978 add_signal_listener (window_event_listener, "window:create");
979 add_signal_listener (window_event_listener, "window:destroy");
980 add_signal_listener (window_event_listener, "window:minimize");
981 add_signal_listener (window_event_listener, "window:maximize");
982 add_signal_listener (window_event_listener, "window:restore");
983 add_signal_listener (window_event_listener, "window:activate");
984 add_signal_listener (window_event_listener, "window:deactivate");
985 add_signal_listener (document_event_listener,
986 "Gtk:AtkDocument:load-complete");
987 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
988 add_signal_listener (document_event_listener,
989 "Gtk:AtkDocument:load-stopped");
990 /* TODO Fake this event on the client side */
991 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
993 add_signal_listener (active_descendant_event_listener,
994 "Gtk:AtkObject:active-descendant-changed");
995 add_signal_listener (bounds_event_listener,
996 "Gtk:AtkComponent:bounds-changed");
997 add_signal_listener (text_selection_changed_event_listener,
998 "Gtk:AtkText:text-selection-changed");
999 add_signal_listener (text_changed_event_listener,
1000 "Gtk:AtkText:text-changed");
1001 add_signal_listener (link_selected_event_listener,
1002 "Gtk:AtkHypertext:link-selected");
1003 add_signal_listener (generic_event_listener,
1004 "Gtk:AtkObject:visible-data-changed");
1005 add_signal_listener (generic_event_listener,
1006 "Gtk:AtkSelection:selection-changed");
1007 add_signal_listener (generic_event_listener,
1008 "Gtk:AtkText:text-attributes-changed");
1009 add_signal_listener (generic_event_listener,
1010 "Gtk:AtkText:text-caret-moved");
1011 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1012 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1013 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1014 add_signal_listener (generic_event_listener,
1015 "Gtk:AtkTable:column-inserted");
1016 add_signal_listener (generic_event_listener,
1017 "Gtk:AtkTable:column-reordered");
1018 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1019 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1021 /* Children signal listeners */
1022 atk_add_global_event_listener (children_changed_event_listener,
1023 "Gtk:AtkObject:children-changed");
1026 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1027 "children-changed::add",
1028 (GCallback) toplevel_added_event_listener, NULL);
1030 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1031 "children-changed::remove",
1032 (GCallback) toplevel_removed_event_listener, NULL);
1036 * May add the following listeners to implement preemptive key listening for GTK+
1038 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1039 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1041 atk_bridge_key_event_listener_id =
1042 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1045 /*---------------------------------------------------------------------------*/
1048 * De-registers all ATK signal handlers.
1051 spi_atk_deregister_event_listeners (void)
1054 GArray *ids = listener_ids;
1055 listener_ids = NULL;
1057 if (atk_bridge_focus_tracker_id)
1058 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1060 for (i = 0; ids && i < ids->len; i++)
1062 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1065 if (atk_bridge_key_event_listener_id)
1066 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1069 /*---------------------------------------------------------------------------*/
1072 * TODO This function seems out of place here.
1074 * Emits fake deactivate signals on all top-level windows.
1075 * Used when shutting down AT-SPI, ensuring that all
1076 * windows have been removed on the client side.
1079 spi_atk_tidy_windows (void)
1085 root = atk_get_root ();
1086 n_children = atk_object_get_n_accessible_children (root);
1087 for (i = 0; i < n_children; i++)
1090 AtkStateSet *stateset;
1093 child = atk_object_ref_accessible_child (root, i);
1094 stateset = atk_object_ref_state_set (child);
1096 name = atk_object_get_name (child);
1097 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1099 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1100 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1102 g_object_unref (stateset);
1104 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1105 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1106 g_object_unref (child);
1111 spi_event_is_subtype (gchar **needle, gchar **haystack)
1113 while (*haystack && **haystack)
1115 if (g_strcmp0 (*needle, *haystack))
1123 /*END------------------------------------------------------------------------*/