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)
58 /* This code won't work on dbus-glib earlier than 0.9.0 because of FDO#30574 */
59 if (spi_global_app_data->app_bus_addr [0] == '\0')
64 dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
65 dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
66 for (list = spi_global_app_data->direct_connections; list; list = list->next)
67 dbus_connection_setup_with_g_main (list->data, cnx);
71 set_reply (DBusPendingCall * pending, void *user_data)
73 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
75 closure->reply = dbus_pending_call_steal_reply (pending);
76 dbus_pending_call_unref (pending);
77 switch_main_context (NULL);
78 g_main_loop_quit (closure->loop);
82 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
84 DBusPendingCall *pending;
85 SpiReentrantCallClosure closure;
86 GMainContext *main_context;
88 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
89 spi_global_app_data->main_context);
90 closure.loop = g_main_loop_new (main_context, FALSE);
91 switch_main_context (main_context);
93 if (!dbus_connection_send_with_reply (bus, message, &pending, -1) || !pending)
95 switch_main_context (NULL);
98 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
99 g_main_loop_run (closure.loop);
101 g_main_loop_unref (closure.loop);
102 return closure.reply;
105 /*---------------------------------------------------------------------------*/
108 * Functionality related to sending device events from the application.
110 * This is used for forwarding key events on to the registry daemon.
114 Accessibility_DeviceEventController_NotifyListenersSync (const
115 Accessibility_DeviceEvent
118 DBusMessage *message;
120 dbus_bool_t consumed = FALSE;
123 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
125 SPI_DBUS_INTERFACE_DEC,
126 "NotifyListenersSync");
128 dbus_error_init (&error);
129 if (spi_dbus_marshal_deviceEvent (message, key_event))
132 send_and_allow_reentry (spi_global_app_data->bus, message);
136 dbus_error_init (&error);
137 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
139 dbus_message_unref (reply);
142 dbus_message_unref (message);
147 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
148 AtkKeyEventStruct * event)
150 keystroke->id = (dbus_int32_t) event->keyval;
151 keystroke->hw_code = (dbus_int16_t) event->keycode;
152 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
153 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
158 keystroke->event_string = g_strdup (event->string);
159 c = g_utf8_get_char_validated (event->string, -1);
160 if (c > 0 && g_unichar_isprint (c))
161 keystroke->is_text = TRUE;
163 keystroke->is_text = FALSE;
167 keystroke->event_string = g_strdup ("");
168 keystroke->is_text = FALSE;
172 case (ATK_KEY_EVENT_PRESS):
173 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
175 case (ATK_KEY_EVENT_RELEASE):
176 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
184 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
185 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
186 (int) keystroke->modifiers, keystroke->event_string,
187 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
193 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
196 Accessibility_DeviceEvent key_event;
198 spi_init_keystroke_from_atk_key_event (&key_event, event);
201 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
203 if (key_event.event_string)
204 g_free (key_event.event_string);
209 /*---------------------------------------------------------------------------*/
212 convert_signal_name (const gchar * s)
214 gchar *ret = g_strdup (s);
219 ret[0] = toupper (ret[0]);
220 while ((t = strchr (ret, '-')) != NULL)
222 memmove (t, t + 1, strlen (t));
229 replace_null (const gint type,
234 case DBUS_TYPE_STRING:
235 case DBUS_TYPE_OBJECT_PATH:
246 append_basic (DBusMessageIter *iter,
252 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
254 val = replace_null ((int) *type, val);
255 dbus_message_iter_append_basic(&sub, (int) *type, &val);
257 dbus_message_iter_close_container(iter, &sub);
261 append_rect (DBusMessageIter *iter,
265 DBusMessageIter variant, sub;
266 const AtkRectangle *rect = (const AtkRectangle *) val;
268 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
270 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
272 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
273 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
274 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
275 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
277 dbus_message_iter_close_container (&variant, &sub);
279 dbus_message_iter_close_container(iter, &variant);
283 append_object (DBusMessageIter *iter,
287 spi_object_append_v_reference (iter, ATK_OBJECT (val));
291 signal_name_to_dbus (const gchar *s)
293 gchar *ret = g_strdup (s);
298 ret [0] = toupper (ret [0]);
299 while ((t = strchr (ret, '-')) != NULL)
301 memmove (t, t + 1, strlen (t));
308 * Converts names of the form "active-descendant-changed" to
309 * "ActiveDescendantChanged"
312 ensure_proper_format (const char *name)
314 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
316 gboolean need_upper = TRUE;
324 *p++ = toupper (*name);
327 else if (*name == '-')
329 else if (*name == ':')
343 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
348 gboolean ret = FALSE;
351 if (!spi_global_app_data->events_initialized)
354 data [0] = ensure_proper_format (klass + 21);
355 data [1] = ensure_proper_format (major);
356 data [2] = ensure_proper_format (minor);
359 /* Hack: events such as "object::text-changed::insert:system" as
360 generated by Gecko */
361 data [2][strcspn (data [2], ":")] = '\0';
362 for (list = spi_global_app_data->events; list; list = list->next)
365 if (spi_event_is_subtype (data, evdata->data))
379 * Emits an AT-SPI event.
380 * AT-SPI events names are split into three parts:
382 * This is mapped onto D-Bus events as:
383 * D-Bus Interface:Signal Name:Detail argument
385 * Marshals a basic type into the 'any_data' attribute of
389 emit_event (AtkObject *obj,
393 dbus_int32_t detail1,
394 dbus_int32_t detail2,
397 void (*append_variant) (DBusMessageIter *, const char *, const void *))
399 DBusConnection *bus = spi_global_app_data->bus;
400 const char *path = spi_register_object_to_path (spi_global_register,
405 DBusMessageIter iter, iter_struct;
407 if (!klass) klass = "";
408 if (!major) major = "";
409 if (!minor) minor = "";
410 if (!type) type = "u";
412 if (!signal_is_needed (klass, major, minor))
416 * This is very annoying, but as '-' isn't a legal signal
417 * name in D-Bus (Why not??!?) The names need converting
418 * on this side, and again on the client side.
420 cname = signal_name_to_dbus (major);
421 sig = dbus_message_new_signal(path, klass, cname);
423 dbus_message_iter_init_append(sig, &iter);
425 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
426 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
427 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
428 append_variant (&iter, type, val);
429 spi_object_append_reference (&iter, spi_global_app_data->root);
431 dbus_connection_send(bus, sig, NULL);
432 dbus_message_unref(sig);
434 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
435 spi_object_lease_if_needed (G_OBJECT (obj));
440 /*---------------------------------------------------------------------------*/
443 * The focus listener handles the ATK 'focus' signal and forwards it
444 * as the AT-SPI event, 'focus:'
447 focus_tracker (AtkObject * accessible)
449 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
450 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
453 /*---------------------------------------------------------------------------*/
455 #define PCHANGE "PropertyChange"
458 * This handler handles the following ATK signals and
459 * converts them to AT-SPI events:
461 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
463 * The property-name is part of the ATK property-change signal.
466 property_event_listener (GSignalInvocationHint * signal_hint,
467 guint n_param_values,
468 const GValue * param_values, gpointer data)
470 AtkObject *accessible;
471 AtkPropertyValues *values;
473 const gchar *pname = NULL;
479 accessible = g_value_get_object (¶m_values[0]);
480 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
482 pname = values[0].property_name;
484 /* TODO Could improve this control statement by matching
485 * on only the end of the signal names,
487 if (strcmp (pname, "accessible-name") == 0)
489 s1 = atk_object_get_name (accessible);
491 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
492 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
494 else if (strcmp (pname, "accessible-description") == 0)
496 s1 = atk_object_get_description (accessible);
498 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
499 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
501 else if (strcmp (pname, "accessible-parent") == 0)
503 otemp = atk_object_get_parent (accessible);
505 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
506 "(so)", otemp, append_object);
508 else if (strcmp (pname, "accessible-role") == 0)
510 i = atk_object_get_role (accessible);
511 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
512 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
514 else if (strcmp (pname, "accessible-table-summary") == 0)
516 otemp = atk_table_get_summary (ATK_TABLE (accessible));
518 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
519 "(so)", otemp, append_object);
521 else if (strcmp (pname, "accessible-table-column-header") == 0)
523 i = g_value_get_int (&(values->new_value));
524 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
526 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
527 "(so)", otemp, append_object);
529 else if (strcmp (pname, "accessible-table-row-header") == 0)
531 i = g_value_get_int (&(values->new_value));
532 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
534 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
535 "(so)", otemp, append_object);
537 else if (strcmp (pname, "accessible-table-row-description") == 0)
539 i = g_value_get_int (&(values->new_value));
540 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
541 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
542 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
544 else if (strcmp (pname, "accessible-table-column-description") == 0)
546 i = g_value_get_int (&(values->new_value));
547 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
548 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
549 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
551 else if (strcmp (pname, "accessible-table-caption-object") == 0)
553 otemp = atk_table_get_caption (ATK_TABLE (accessible));
554 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
555 "(so)", otemp, append_object);
559 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
560 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
565 /*---------------------------------------------------------------------------*/
567 #define STATE_CHANGED "state-changed"
570 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
571 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
572 * the param-name is part of the ATK state-change signal.
575 state_event_listener (GSignalInvocationHint * signal_hint,
576 guint n_param_values,
577 const GValue * param_values, gpointer data)
579 AtkObject *accessible;
583 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
584 pname = g_strdup (g_value_get_string (¶m_values[1]));
586 /* TODO - Possibly ignore a change to the 'defunct' state.
587 * This is because without reference counting defunct objects should be removed.
589 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
590 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
591 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
596 /*---------------------------------------------------------------------------*/
599 * The window event listener handles the following ATK signals and forwards
600 * them as AT-SPI events:
602 * window:create -> window:create
603 * window:destroy -> window:destroy
604 * window:minimize -> window:minimize
605 * window:maximize -> window:maximize
606 * window:activate -> window:activate
607 * window:deactivate -> window:deactivate
610 window_event_listener (GSignalInvocationHint * signal_hint,
611 guint n_param_values,
612 const GValue * param_values, gpointer data)
614 AtkObject *accessible;
615 GSignalQuery signal_query;
616 const gchar *name, *s;
618 g_signal_query (signal_hint->signal_id, &signal_query);
619 name = signal_query.signal_name;
621 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
622 s = atk_object_get_name (accessible);
623 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
624 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
629 /*---------------------------------------------------------------------------*/
632 * The document event listener handles the following ATK signals
633 * and converts them to AT-SPI events:
635 * Gtk:AtkDocument:load-complete -> document:load-complete
636 * Gtk:AtkDocument:load-stopped -> document:load-stopped
637 * Gtk:AtkDocument:reload -> document:reload
640 document_event_listener (GSignalInvocationHint * signal_hint,
641 guint n_param_values,
642 const GValue * param_values, gpointer data)
644 AtkObject *accessible;
645 GSignalQuery signal_query;
646 const gchar *name, *s;
648 g_signal_query (signal_hint->signal_id, &signal_query);
649 name = signal_query.signal_name;
651 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
652 s = atk_object_get_name (accessible);
653 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
654 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
659 /*---------------------------------------------------------------------------*/
662 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
663 * this to an AT-SPI event - "object:bounds-changed".
666 bounds_event_listener (GSignalInvocationHint * signal_hint,
667 guint n_param_values,
668 const GValue * param_values, gpointer data)
670 AtkObject *accessible;
671 AtkRectangle *atk_rect;
672 GSignalQuery signal_query;
673 const gchar *name, *s;
675 g_signal_query (signal_hint->signal_id, &signal_query);
676 name = signal_query.signal_name;
678 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
680 if (G_VALUE_HOLDS_BOXED (param_values + 1))
682 atk_rect = g_value_get_boxed (param_values + 1);
684 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
685 "(iiii)", atk_rect, append_rect);
690 /*---------------------------------------------------------------------------*/
693 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
694 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
698 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
699 guint n_param_values,
700 const GValue * param_values, gpointer data)
702 AtkObject *accessible;
704 GSignalQuery signal_query;
705 const gchar *name, *minor;
708 g_signal_query (signal_hint->signal_id, &signal_query);
709 name = signal_query.signal_name;
711 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
712 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
713 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
714 minor = g_quark_to_string (signal_hint->detail);
716 detail1 = atk_object_get_index_in_parent (child);
718 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
719 "(so)", child, append_object);
723 /*---------------------------------------------------------------------------*/
726 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
727 * converts it to the AT-SPI signal - 'object:link-selected'
731 link_selected_event_listener (GSignalInvocationHint * signal_hint,
732 guint n_param_values,
733 const GValue * param_values, gpointer data)
735 AtkObject *accessible;
736 GSignalQuery signal_query;
737 const gchar *name, *minor;
740 g_signal_query (signal_hint->signal_id, &signal_query);
741 name = signal_query.signal_name;
743 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
744 minor = g_quark_to_string (signal_hint->detail);
746 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
747 detail1 = g_value_get_int (¶m_values[1]);
749 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
750 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
754 /*---------------------------------------------------------------------------*/
757 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
758 * converts it to the AT-SPI signal - 'object:text-changed'
762 text_changed_event_listener (GSignalInvocationHint * signal_hint,
763 guint n_param_values,
764 const GValue * param_values, gpointer data)
766 AtkObject *accessible;
767 GSignalQuery signal_query;
768 const gchar *name, *minor;
770 gint detail1, detail2;
772 g_signal_query (signal_hint->signal_id, &signal_query);
773 name = signal_query.signal_name;
775 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
776 minor = g_quark_to_string (signal_hint->detail);
778 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
779 detail1 = g_value_get_int (¶m_values[1]);
781 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
782 detail2 = g_value_get_int (¶m_values[2]);
785 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
787 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
788 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
792 /*---------------------------------------------------------------------------*/
795 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
796 * converts it to the AT-SPI signal - 'object:text-selection-changed'
800 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
801 guint n_param_values,
802 const GValue * param_values,
805 AtkObject *accessible;
806 GSignalQuery signal_query;
807 const gchar *name, *minor;
808 gint detail1, detail2;
810 g_signal_query (signal_hint->signal_id, &signal_query);
811 name = signal_query.signal_name;
813 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
814 minor = g_quark_to_string (signal_hint->detail);
816 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
817 detail1 = g_value_get_int (¶m_values[1]);
819 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
820 detail2 = g_value_get_int (¶m_values[2]);
822 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
823 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
827 /*---------------------------------------------------------------------------*/
830 * Children changed signal converter and forwarder.
832 * Klass (Interface) org.a11y.atspi.Event.Object
833 * Major is the signal name.
834 * Minor is 'add' or 'remove'
835 * detail1 is the index.
837 * any_data is the child reference.
840 children_changed_event_listener (GSignalInvocationHint * signal_hint,
841 guint n_param_values,
842 const GValue * param_values, gpointer data)
844 GSignalQuery signal_query;
845 const gchar *name, *minor;
846 gint detail1, detail2 = 0;
848 AtkObject *accessible, *ao=NULL;
851 g_signal_query (signal_hint->signal_id, &signal_query);
852 name = signal_query.signal_name;
854 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
855 minor = g_quark_to_string (signal_hint->detail);
857 detail1 = g_value_get_uint (param_values + 1);
858 child = g_value_get_pointer (param_values + 2);
860 if (ATK_IS_OBJECT (child))
862 ao = ATK_OBJECT (child);
863 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
864 "(so)", ao, append_object);
866 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
868 ao = atk_object_ref_accessible_child (accessible,
870 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
871 "(so)", ao, append_object);
875 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
876 "(so)", ao, append_object);
882 /*---------------------------------------------------------------------------*/
885 toplevel_added_event_listener (AtkObject * accessible,
886 guint index, AtkObject * child)
888 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
889 "(so)", child, append_object);
893 toplevel_removed_event_listener (AtkObject * accessible,
894 guint index, AtkObject * child)
896 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
897 "(so)", child, append_object);
900 /*---------------------------------------------------------------------------*/
903 * Generic signal converter and forwarder.
905 * Klass (Interface) org.a11y.atspi.Event.Object
906 * Major is the signal name.
913 generic_event_listener (GSignalInvocationHint * signal_hint,
914 guint n_param_values,
915 const GValue * param_values, gpointer data)
917 AtkObject *accessible;
918 GSignalQuery signal_query;
920 int detail1 = 0, detail2 = 0;
922 g_signal_query (signal_hint->signal_id, &signal_query);
923 name = signal_query.signal_name;
925 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
927 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
928 detail1 = g_value_get_int (¶m_values[1]);
930 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
931 detail2 = g_value_get_int (¶m_values[2]);
933 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
934 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
938 /*---------------------------------------------------------------------------*/
941 * Registers the provided function as a handler for the given signal name
942 * and stores the signal id returned so that the function may be
943 * de-registered later.
946 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
950 id = atk_add_global_event_listener (listener, signal_name);
951 g_array_append_val (listener_ids, id);
955 * Initialization for the signal handlers.
957 * Registers all required signal handlers.
960 spi_atk_register_event_listeners (void)
963 * Kludge to make sure the Atk interface types are registered, otherwise
964 * the AtkText signal handlers below won't get registered
966 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
967 AtkObject *bo = atk_no_op_object_new (ao);
969 g_object_unref (G_OBJECT (bo));
972 /* Register for focus event notifications, and register app with central registry */
973 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
975 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
977 add_signal_listener (property_event_listener,
978 "Gtk:AtkObject:property-change");
979 add_signal_listener (window_event_listener, "window:create");
980 add_signal_listener (window_event_listener, "window:destroy");
981 add_signal_listener (window_event_listener, "window:minimize");
982 add_signal_listener (window_event_listener, "window:maximize");
983 add_signal_listener (window_event_listener, "window:restore");
984 add_signal_listener (window_event_listener, "window:activate");
985 add_signal_listener (window_event_listener, "window:deactivate");
986 add_signal_listener (document_event_listener,
987 "Gtk:AtkDocument:load-complete");
988 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
989 add_signal_listener (document_event_listener,
990 "Gtk:AtkDocument:load-stopped");
991 /* TODO Fake this event on the client side */
992 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
994 add_signal_listener (active_descendant_event_listener,
995 "Gtk:AtkObject:active-descendant-changed");
996 add_signal_listener (bounds_event_listener,
997 "Gtk:AtkComponent:bounds-changed");
998 add_signal_listener (text_selection_changed_event_listener,
999 "Gtk:AtkText:text-selection-changed");
1000 add_signal_listener (text_changed_event_listener,
1001 "Gtk:AtkText:text-changed");
1002 add_signal_listener (link_selected_event_listener,
1003 "Gtk:AtkHypertext:link-selected");
1004 add_signal_listener (generic_event_listener,
1005 "Gtk:AtkObject:visible-data-changed");
1006 add_signal_listener (generic_event_listener,
1007 "Gtk:AtkSelection:selection-changed");
1008 add_signal_listener (generic_event_listener,
1009 "Gtk:AtkText:text-attributes-changed");
1010 add_signal_listener (generic_event_listener,
1011 "Gtk:AtkText:text-caret-moved");
1012 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1013 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1014 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1015 add_signal_listener (generic_event_listener,
1016 "Gtk:AtkTable:column-inserted");
1017 add_signal_listener (generic_event_listener,
1018 "Gtk:AtkTable:column-reordered");
1019 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1020 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1022 /* Children signal listeners */
1023 atk_add_global_event_listener (children_changed_event_listener,
1024 "Gtk:AtkObject:children-changed");
1027 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1028 "children-changed::add",
1029 (GCallback) toplevel_added_event_listener, NULL);
1031 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1032 "children-changed::remove",
1033 (GCallback) toplevel_removed_event_listener, NULL);
1037 * May add the following listeners to implement preemptive key listening for GTK+
1039 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1040 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1042 atk_bridge_key_event_listener_id =
1043 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1046 /*---------------------------------------------------------------------------*/
1049 * De-registers all ATK signal handlers.
1052 spi_atk_deregister_event_listeners (void)
1055 GArray *ids = listener_ids;
1056 listener_ids = NULL;
1058 if (atk_bridge_focus_tracker_id)
1059 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1061 for (i = 0; ids && i < ids->len; i++)
1063 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1066 if (atk_bridge_key_event_listener_id)
1067 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1070 /*---------------------------------------------------------------------------*/
1073 * TODO This function seems out of place here.
1075 * Emits fake deactivate signals on all top-level windows.
1076 * Used when shutting down AT-SPI, ensuring that all
1077 * windows have been removed on the client side.
1080 spi_atk_tidy_windows (void)
1086 root = atk_get_root ();
1087 n_children = atk_object_get_n_accessible_children (root);
1088 for (i = 0; i < n_children; i++)
1091 AtkStateSet *stateset;
1094 child = atk_object_ref_accessible_child (root, i);
1095 stateset = atk_object_ref_state_set (child);
1097 name = atk_object_get_name (child);
1098 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1100 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1101 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1103 g_object_unref (stateset);
1105 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1106 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1107 g_object_unref (child);
1112 spi_event_is_subtype (gchar **needle, gchar **haystack)
1114 while (*haystack && **haystack)
1116 if (g_strcmp0 (*needle, *haystack))
1124 /*END------------------------------------------------------------------------*/