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 switch_main_context (NULL);
76 g_main_loop_quit (closure->loop);
80 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
82 DBusPendingCall *pending;
83 SpiReentrantCallClosure closure;
84 GMainContext *main_context;
86 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
87 spi_global_app_data->main_context);
88 closure.loop = g_main_loop_new (main_context, FALSE);
89 switch_main_context (main_context);
91 if (!dbus_connection_send_with_reply (bus, message, &pending, -1))
93 switch_main_context (NULL);
96 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
97 g_main_loop_run (closure.loop);
99 g_main_loop_unref (closure.loop);
100 return closure.reply;
103 /*---------------------------------------------------------------------------*/
106 * Functionality related to sending device events from the application.
108 * This is used for forwarding key events on to the registry daemon.
112 Accessibility_DeviceEventController_NotifyListenersSync (const
113 Accessibility_DeviceEvent
116 DBusMessage *message;
118 dbus_bool_t consumed = FALSE;
121 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
123 SPI_DBUS_INTERFACE_DEC,
124 "NotifyListenersSync");
126 dbus_error_init (&error);
127 if (spi_dbus_marshal_deviceEvent (message, key_event))
130 send_and_allow_reentry (spi_global_app_data->bus, message);
134 dbus_error_init (&error);
135 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
137 dbus_message_unref (reply);
140 dbus_message_unref (message);
145 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
146 AtkKeyEventStruct * event)
148 keystroke->id = (dbus_int32_t) event->keyval;
149 keystroke->hw_code = (dbus_int16_t) event->keycode;
150 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
151 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
156 keystroke->event_string = g_strdup (event->string);
157 c = g_utf8_get_char_validated (event->string, -1);
158 if (c > 0 && g_unichar_isprint (c))
159 keystroke->is_text = TRUE;
161 keystroke->is_text = FALSE;
165 keystroke->event_string = g_strdup ("");
166 keystroke->is_text = FALSE;
170 case (ATK_KEY_EVENT_PRESS):
171 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
173 case (ATK_KEY_EVENT_RELEASE):
174 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
182 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
183 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
184 (int) keystroke->modifiers, keystroke->event_string,
185 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
191 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
194 Accessibility_DeviceEvent key_event;
196 spi_init_keystroke_from_atk_key_event (&key_event, event);
199 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
201 if (key_event.event_string)
202 g_free (key_event.event_string);
207 /*---------------------------------------------------------------------------*/
210 convert_signal_name (const gchar * s)
212 gchar *ret = g_strdup (s);
217 ret[0] = toupper (ret[0]);
218 while ((t = strchr (ret, '-')) != NULL)
220 memmove (t, t + 1, strlen (t));
227 replace_null (const gint type,
232 case DBUS_TYPE_STRING:
233 case DBUS_TYPE_OBJECT_PATH:
244 append_basic (DBusMessageIter *iter,
250 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
252 val = replace_null ((int) *type, val);
253 dbus_message_iter_append_basic(&sub, (int) *type, &val);
255 dbus_message_iter_close_container(iter, &sub);
259 append_rect (DBusMessageIter *iter,
263 DBusMessageIter variant, sub;
264 const AtkRectangle *rect = (const AtkRectangle *) val;
266 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
268 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
270 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
271 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
272 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
273 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
275 dbus_message_iter_close_container (&variant, &sub);
277 dbus_message_iter_close_container(iter, &variant);
281 append_object (DBusMessageIter *iter,
285 spi_object_append_v_reference (iter, ATK_OBJECT (val));
289 signal_name_to_dbus (const gchar *s)
291 gchar *ret = g_strdup (s);
296 ret [0] = toupper (ret [0]);
297 while ((t = strchr (ret, '-')) != NULL)
299 memmove (t, t + 1, strlen (t));
306 * Converts names of the form "active-descendant-changed" to
307 * "ActiveDescendantChanged"
310 ensure_proper_format (const char *name)
312 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
314 gboolean need_upper = TRUE;
322 *p++ = toupper (*name);
325 else if (*name == '-')
327 else if (*name == ':')
341 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
346 gboolean ret = FALSE;
349 if (!spi_global_app_data->events_initialized)
352 data [0] = ensure_proper_format (klass + 21);
353 data [1] = ensure_proper_format (major);
354 data [2] = ensure_proper_format (minor);
357 /* Hack: events such as "object::text-changed::insert:system" as
358 generated by Gecko */
359 data [2][strcspn (data [2], ":")] = '\0';
360 for (list = spi_global_app_data->events; list; list = list->next)
363 if (spi_event_is_subtype (data, evdata->data))
377 * Emits an AT-SPI event.
378 * AT-SPI events names are split into three parts:
380 * This is mapped onto D-Bus events as:
381 * D-Bus Interface:Signal Name:Detail argument
383 * Marshals a basic type into the 'any_data' attribute of
387 emit_event (AtkObject *obj,
391 dbus_int32_t detail1,
392 dbus_int32_t detail2,
395 void (*append_variant) (DBusMessageIter *, const char *, const void *))
397 DBusConnection *bus = spi_global_app_data->bus;
398 const char *path = spi_register_object_to_path (spi_global_register,
403 DBusMessageIter iter, iter_struct;
405 if (!klass) klass = "";
406 if (!major) major = "";
407 if (!minor) minor = "";
408 if (!type) type = "u";
410 if (!signal_is_needed (klass, major, minor))
414 * This is very annoying, but as '-' isn't a legal signal
415 * name in D-Bus (Why not??!?) The names need converting
416 * on this side, and again on the client side.
418 cname = signal_name_to_dbus (major);
419 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));
437 /*---------------------------------------------------------------------------*/
440 * The focus listener handles the ATK 'focus' signal and forwards it
441 * as the AT-SPI event, 'focus:'
444 focus_tracker (AtkObject * accessible)
446 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
447 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
450 /*---------------------------------------------------------------------------*/
452 #define PCHANGE "PropertyChange"
455 * This handler handles the following ATK signals and
456 * converts them to AT-SPI events:
458 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
460 * The property-name is part of the ATK property-change signal.
463 property_event_listener (GSignalInvocationHint * signal_hint,
464 guint n_param_values,
465 const GValue * param_values, gpointer data)
467 AtkObject *accessible;
468 AtkPropertyValues *values;
470 const gchar *pname = NULL;
476 accessible = g_value_get_object (¶m_values[0]);
477 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
479 pname = values[0].property_name;
481 /* TODO Could improve this control statement by matching
482 * on only the end of the signal names,
484 if (strcmp (pname, "accessible-name") == 0)
486 s1 = atk_object_get_name (accessible);
488 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
489 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
491 else if (strcmp (pname, "accessible-description") == 0)
493 s1 = atk_object_get_description (accessible);
495 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
496 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
498 else if (strcmp (pname, "accessible-parent") == 0)
500 otemp = atk_object_get_parent (accessible);
502 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
503 "(so)", otemp, append_object);
505 else if (strcmp (pname, "accessible-role") == 0)
507 i = atk_object_get_role (accessible);
508 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
509 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
511 else if (strcmp (pname, "accessible-table-summary") == 0)
513 otemp = atk_table_get_summary (ATK_TABLE (accessible));
515 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
516 "(so)", otemp, append_object);
518 else if (strcmp (pname, "accessible-table-column-header") == 0)
520 i = g_value_get_int (&(values->new_value));
521 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
523 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
524 "(so)", otemp, append_object);
526 else if (strcmp (pname, "accessible-table-row-header") == 0)
528 i = g_value_get_int (&(values->new_value));
529 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
531 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
532 "(so)", otemp, append_object);
534 else if (strcmp (pname, "accessible-table-row-description") == 0)
536 i = g_value_get_int (&(values->new_value));
537 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
538 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
539 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
541 else if (strcmp (pname, "accessible-table-column-description") == 0)
543 i = g_value_get_int (&(values->new_value));
544 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
545 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
546 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
548 else if (strcmp (pname, "accessible-table-caption-object") == 0)
550 otemp = atk_table_get_caption (ATK_TABLE (accessible));
551 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
552 "(so)", otemp, append_object);
556 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
557 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
562 /*---------------------------------------------------------------------------*/
564 #define STATE_CHANGED "state-changed"
567 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
568 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
569 * the param-name is part of the ATK state-change signal.
572 state_event_listener (GSignalInvocationHint * signal_hint,
573 guint n_param_values,
574 const GValue * param_values, gpointer data)
576 AtkObject *accessible;
580 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
581 pname = g_strdup (g_value_get_string (¶m_values[1]));
583 /* TODO - Possibly ignore a change to the 'defunct' state.
584 * This is because without reference counting defunct objects should be removed.
586 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
587 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
588 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
593 /*---------------------------------------------------------------------------*/
596 * The window event listener handles the following ATK signals and forwards
597 * them as AT-SPI events:
599 * window:create -> window:create
600 * window:destroy -> window:destroy
601 * window:minimize -> window:minimize
602 * window:maximize -> window:maximize
603 * window:activate -> window:activate
604 * window:deactivate -> window:deactivate
607 window_event_listener (GSignalInvocationHint * signal_hint,
608 guint n_param_values,
609 const GValue * param_values, gpointer data)
611 AtkObject *accessible;
612 GSignalQuery signal_query;
613 const gchar *name, *s;
615 g_signal_query (signal_hint->signal_id, &signal_query);
616 name = signal_query.signal_name;
618 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
619 s = atk_object_get_name (accessible);
620 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
621 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
626 /*---------------------------------------------------------------------------*/
629 * The document event listener handles the following ATK signals
630 * and converts them to AT-SPI events:
632 * Gtk:AtkDocument:load-complete -> document:load-complete
633 * Gtk:AtkDocument:load-stopped -> document:load-stopped
634 * Gtk:AtkDocument:reload -> document:reload
637 document_event_listener (GSignalInvocationHint * signal_hint,
638 guint n_param_values,
639 const GValue * param_values, gpointer data)
641 AtkObject *accessible;
642 GSignalQuery signal_query;
643 const gchar *name, *s;
645 g_signal_query (signal_hint->signal_id, &signal_query);
646 name = signal_query.signal_name;
648 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
649 s = atk_object_get_name (accessible);
650 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
651 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
656 /*---------------------------------------------------------------------------*/
659 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
660 * this to an AT-SPI event - "object:bounds-changed".
663 bounds_event_listener (GSignalInvocationHint * signal_hint,
664 guint n_param_values,
665 const GValue * param_values, gpointer data)
667 AtkObject *accessible;
668 AtkRectangle *atk_rect;
669 GSignalQuery signal_query;
670 const gchar *name, *s;
672 g_signal_query (signal_hint->signal_id, &signal_query);
673 name = signal_query.signal_name;
675 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
677 if (G_VALUE_HOLDS_BOXED (param_values + 1))
679 atk_rect = g_value_get_boxed (param_values + 1);
681 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
682 "(iiii)", atk_rect, append_rect);
687 /*---------------------------------------------------------------------------*/
690 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
691 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
695 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
696 guint n_param_values,
697 const GValue * param_values, gpointer data)
699 AtkObject *accessible;
701 GSignalQuery signal_query;
702 const gchar *name, *minor;
705 g_signal_query (signal_hint->signal_id, &signal_query);
706 name = signal_query.signal_name;
708 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
709 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
710 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
711 minor = g_quark_to_string (signal_hint->detail);
713 detail1 = atk_object_get_index_in_parent (child);
715 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
716 "(so)", child, append_object);
720 /*---------------------------------------------------------------------------*/
723 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
724 * converts it to the AT-SPI signal - 'object:link-selected'
728 link_selected_event_listener (GSignalInvocationHint * signal_hint,
729 guint n_param_values,
730 const GValue * param_values, gpointer data)
732 AtkObject *accessible;
733 GSignalQuery signal_query;
734 const gchar *name, *minor;
737 g_signal_query (signal_hint->signal_id, &signal_query);
738 name = signal_query.signal_name;
740 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
741 minor = g_quark_to_string (signal_hint->detail);
743 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
744 detail1 = g_value_get_int (¶m_values[1]);
746 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
747 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
751 /*---------------------------------------------------------------------------*/
754 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
755 * converts it to the AT-SPI signal - 'object:text-changed'
759 text_changed_event_listener (GSignalInvocationHint * signal_hint,
760 guint n_param_values,
761 const GValue * param_values, gpointer data)
763 AtkObject *accessible;
764 GSignalQuery signal_query;
765 const gchar *name, *minor;
767 gint detail1, detail2;
769 g_signal_query (signal_hint->signal_id, &signal_query);
770 name = signal_query.signal_name;
772 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
773 minor = g_quark_to_string (signal_hint->detail);
775 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
776 detail1 = g_value_get_int (¶m_values[1]);
778 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
779 detail2 = g_value_get_int (¶m_values[2]);
782 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
784 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
785 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
789 /*---------------------------------------------------------------------------*/
792 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
793 * converts it to the AT-SPI signal - 'object:text-selection-changed'
797 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
798 guint n_param_values,
799 const GValue * param_values,
802 AtkObject *accessible;
803 GSignalQuery signal_query;
804 const gchar *name, *minor;
805 gint detail1, detail2;
807 g_signal_query (signal_hint->signal_id, &signal_query);
808 name = signal_query.signal_name;
810 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
811 minor = g_quark_to_string (signal_hint->detail);
813 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
814 detail1 = g_value_get_int (¶m_values[1]);
816 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
817 detail2 = g_value_get_int (¶m_values[2]);
819 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
820 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
824 /*---------------------------------------------------------------------------*/
827 * Children changed signal converter and forwarder.
829 * Klass (Interface) org.a11y.atspi.Event.Object
830 * Major is the signal name.
831 * Minor is 'add' or 'remove'
832 * detail1 is the index.
834 * any_data is the child reference.
837 children_changed_event_listener (GSignalInvocationHint * signal_hint,
838 guint n_param_values,
839 const GValue * param_values, gpointer data)
841 GSignalQuery signal_query;
842 const gchar *name, *minor;
843 gint detail1, detail2 = 0;
845 AtkObject *accessible, *ao=NULL;
848 g_signal_query (signal_hint->signal_id, &signal_query);
849 name = signal_query.signal_name;
851 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
852 minor = g_quark_to_string (signal_hint->detail);
854 detail1 = g_value_get_uint (param_values + 1);
855 child = g_value_get_pointer (param_values + 2);
857 if (ATK_IS_OBJECT (child))
859 ao = ATK_OBJECT (child);
860 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
861 "(so)", ao, append_object);
863 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
865 ao = atk_object_ref_accessible_child (accessible,
867 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
868 "(so)", ao, append_object);
872 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
873 "(so)", ao, append_object);
879 /*---------------------------------------------------------------------------*/
882 toplevel_added_event_listener (AtkObject * accessible,
883 guint index, AtkObject * child)
885 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
886 "(so)", child, append_object);
890 toplevel_removed_event_listener (AtkObject * accessible,
891 guint index, AtkObject * child)
893 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
894 "(so)", child, append_object);
897 /*---------------------------------------------------------------------------*/
900 * Generic signal converter and forwarder.
902 * Klass (Interface) org.a11y.atspi.Event.Object
903 * Major is the signal name.
910 generic_event_listener (GSignalInvocationHint * signal_hint,
911 guint n_param_values,
912 const GValue * param_values, gpointer data)
914 AtkObject *accessible;
915 GSignalQuery signal_query;
917 int detail1 = 0, detail2 = 0;
919 g_signal_query (signal_hint->signal_id, &signal_query);
920 name = signal_query.signal_name;
922 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
924 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
925 detail1 = g_value_get_int (¶m_values[1]);
927 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
928 detail2 = g_value_get_int (¶m_values[2]);
930 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
931 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
935 /*---------------------------------------------------------------------------*/
938 * Registers the provided function as a handler for the given signal name
939 * and stores the signal id returned so that the function may be
940 * de-registered later.
943 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
947 id = atk_add_global_event_listener (listener, signal_name);
948 g_array_append_val (listener_ids, id);
952 * Initialization for the signal handlers.
954 * Registers all required signal handlers.
957 spi_atk_register_event_listeners (void)
960 * Kludge to make sure the Atk interface types are registered, otherwise
961 * the AtkText signal handlers below won't get registered
963 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
964 AtkObject *bo = atk_no_op_object_new (ao);
966 g_object_unref (G_OBJECT (bo));
969 /* Register for focus event notifications, and register app with central registry */
970 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
972 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
974 add_signal_listener (property_event_listener,
975 "Gtk:AtkObject:property-change");
976 add_signal_listener (window_event_listener, "window:create");
977 add_signal_listener (window_event_listener, "window:destroy");
978 add_signal_listener (window_event_listener, "window:minimize");
979 add_signal_listener (window_event_listener, "window:maximize");
980 add_signal_listener (window_event_listener, "window:restore");
981 add_signal_listener (window_event_listener, "window:activate");
982 add_signal_listener (window_event_listener, "window:deactivate");
983 add_signal_listener (document_event_listener,
984 "Gtk:AtkDocument:load-complete");
985 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
986 add_signal_listener (document_event_listener,
987 "Gtk:AtkDocument:load-stopped");
988 /* TODO Fake this event on the client side */
989 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
991 add_signal_listener (active_descendant_event_listener,
992 "Gtk:AtkObject:active-descendant-changed");
993 add_signal_listener (bounds_event_listener,
994 "Gtk:AtkComponent:bounds-changed");
995 add_signal_listener (text_selection_changed_event_listener,
996 "Gtk:AtkText:text-selection-changed");
997 add_signal_listener (text_changed_event_listener,
998 "Gtk:AtkText:text-changed");
999 add_signal_listener (link_selected_event_listener,
1000 "Gtk:AtkHypertext:link-selected");
1001 add_signal_listener (generic_event_listener,
1002 "Gtk:AtkObject:visible-data-changed");
1003 add_signal_listener (generic_event_listener,
1004 "Gtk:AtkSelection:selection-changed");
1005 add_signal_listener (generic_event_listener,
1006 "Gtk:AtkText:text-attributes-changed");
1007 add_signal_listener (generic_event_listener,
1008 "Gtk:AtkText:text-caret-moved");
1009 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1010 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1011 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1012 add_signal_listener (generic_event_listener,
1013 "Gtk:AtkTable:column-inserted");
1014 add_signal_listener (generic_event_listener,
1015 "Gtk:AtkTable:column-reordered");
1016 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1017 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1019 /* Children signal listeners */
1020 atk_add_global_event_listener (children_changed_event_listener,
1021 "Gtk:AtkObject:children-changed");
1024 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1025 "children-changed::add",
1026 (GCallback) toplevel_added_event_listener, NULL);
1028 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1029 "children-changed::remove",
1030 (GCallback) toplevel_removed_event_listener, NULL);
1034 * May add the following listeners to implement preemptive key listening for GTK+
1036 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1037 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1039 atk_bridge_key_event_listener_id =
1040 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1043 /*---------------------------------------------------------------------------*/
1046 * De-registers all ATK signal handlers.
1049 spi_atk_deregister_event_listeners (void)
1052 GArray *ids = listener_ids;
1053 listener_ids = NULL;
1055 if (atk_bridge_focus_tracker_id)
1056 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1058 for (i = 0; ids && i < ids->len; i++)
1060 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1063 if (atk_bridge_key_event_listener_id)
1064 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1067 /*---------------------------------------------------------------------------*/
1070 * TODO This function seems out of place here.
1072 * Emits fake deactivate signals on all top-level windows.
1073 * Used when shutting down AT-SPI, ensuring that all
1074 * windows have been removed on the client side.
1077 spi_atk_tidy_windows (void)
1083 root = atk_get_root ();
1084 n_children = atk_object_get_n_accessible_children (root);
1085 for (i = 0; i < n_children; i++)
1088 AtkStateSet *stateset;
1091 child = atk_object_ref_accessible_child (root, i);
1092 stateset = atk_object_ref_state_set (child);
1094 name = atk_object_get_name (child);
1095 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1097 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1098 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1100 g_object_unref (stateset);
1102 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1103 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1104 g_object_unref (child);
1109 spi_event_is_subtype (gchar **needle, gchar **haystack)
1111 while (*haystack && **haystack)
1113 if (g_strcmp0 (*needle, *haystack))
1121 /*END------------------------------------------------------------------------*/