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.
29 #include <droute/droute.h>
32 #include "accessible-register.h"
34 #include "common/spi-dbus.h"
36 static GArray *listener_ids = NULL;
38 static gint atk_bridge_key_event_listener_id;
39 static gint atk_bridge_focus_tracker_id;
41 /*---------------------------------------------------------------------------*/
43 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
44 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
45 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
46 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
48 /*---------------------------------------------------------------------------*/
50 typedef struct _SpiReentrantCallClosure
54 } SpiReentrantCallClosure;
57 switch_main_context (GMainContext *cnx)
59 /* This code won't work on dbus-glib earlier than 0.9.0 because of FDO#30574 */
60 if (spi_global_app_data->app_bus_addr [0] == '\0')
65 dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
66 dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
67 for (list = spi_global_app_data->direct_connections; list; list = list->next)
68 dbus_connection_setup_with_g_main (list->data, cnx);
72 set_reply (DBusPendingCall * pending, void *user_data)
74 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
76 closure->reply = dbus_pending_call_steal_reply (pending);
77 dbus_pending_call_unref (pending);
78 switch_main_context (NULL);
79 g_main_loop_quit (closure->loop);
83 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
85 DBusPendingCall *pending;
86 SpiReentrantCallClosure closure;
87 GMainContext *main_context;
89 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
90 spi_global_app_data->main_context);
91 closure.loop = g_main_loop_new (main_context, FALSE);
92 switch_main_context (main_context);
94 if (!dbus_connection_send_with_reply (bus, message, &pending, -1) || !pending)
96 switch_main_context (NULL);
99 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
100 g_main_loop_run (closure.loop);
102 g_main_loop_unref (closure.loop);
103 return closure.reply;
106 /*---------------------------------------------------------------------------*/
109 * Functionality related to sending device events from the application.
111 * This is used for forwarding key events on to the registry daemon.
115 Accessibility_DeviceEventController_NotifyListenersSync (const
116 Accessibility_DeviceEvent
119 DBusMessage *message;
121 dbus_bool_t consumed = FALSE;
124 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
126 SPI_DBUS_INTERFACE_DEC,
127 "NotifyListenersSync");
129 dbus_error_init (&error);
130 if (spi_dbus_marshal_deviceEvent (message, key_event))
133 send_and_allow_reentry (spi_global_app_data->bus, message);
137 dbus_error_init (&error);
138 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
140 dbus_message_unref (reply);
143 dbus_message_unref (message);
148 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
149 AtkKeyEventStruct * event)
151 keystroke->id = (dbus_int32_t) event->keyval;
152 keystroke->hw_code = (dbus_int16_t) event->keycode;
153 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
154 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
159 keystroke->event_string = g_strdup (event->string);
160 c = g_utf8_get_char_validated (event->string, -1);
161 if (c > 0 && g_unichar_isprint (c))
162 keystroke->is_text = TRUE;
164 keystroke->is_text = FALSE;
168 keystroke->event_string = g_strdup ("");
169 keystroke->is_text = FALSE;
173 case (ATK_KEY_EVENT_PRESS):
174 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
176 case (ATK_KEY_EVENT_RELEASE):
177 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
185 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
186 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
187 (int) keystroke->modifiers, keystroke->event_string,
188 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
194 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
197 Accessibility_DeviceEvent key_event;
199 spi_init_keystroke_from_atk_key_event (&key_event, event);
202 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
204 if (key_event.event_string)
205 g_free (key_event.event_string);
210 /*---------------------------------------------------------------------------*/
213 convert_signal_name (const gchar * s)
215 gchar *ret = g_strdup (s);
220 ret[0] = toupper (ret[0]);
221 while ((t = strchr (ret, '-')) != NULL)
223 memmove (t, t + 1, strlen (t));
230 replace_null (const gint type,
235 case DBUS_TYPE_STRING:
236 case DBUS_TYPE_OBJECT_PATH:
247 append_basic (DBusMessageIter *iter,
253 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
255 val = replace_null ((int) *type, val);
256 dbus_message_iter_append_basic(&sub, (int) *type, &val);
258 dbus_message_iter_close_container(iter, &sub);
262 append_rect (DBusMessageIter *iter,
266 DBusMessageIter variant, sub;
267 const AtkRectangle *rect = (const AtkRectangle *) val;
269 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
271 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
273 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
274 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
275 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
276 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
278 dbus_message_iter_close_container (&variant, &sub);
280 dbus_message_iter_close_container(iter, &variant);
284 append_object (DBusMessageIter *iter,
288 spi_object_append_v_reference (iter, ATK_OBJECT (val));
292 signal_name_to_dbus (const gchar *s)
294 gchar *ret = g_strdup (s);
299 ret [0] = toupper (ret [0]);
300 while ((t = strchr (ret, '-')) != NULL)
302 memmove (t, t + 1, strlen (t));
309 * Converts names of the form "active-descendant-changed" to
310 * "ActiveDescendantChanged"
313 ensure_proper_format (const char *name)
315 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
317 gboolean need_upper = TRUE;
325 *p++ = toupper (*name);
328 else if (*name == '-')
330 else if (*name == ':')
344 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
349 gboolean ret = FALSE;
352 if (!spi_global_app_data->events_initialized)
355 data [0] = ensure_proper_format (klass + 21);
356 data [1] = ensure_proper_format (major);
357 data [2] = ensure_proper_format (minor);
360 /* Hack: events such as "object::text-changed::insert:system" as
361 generated by Gecko */
362 data [2][strcspn (data [2], ":")] = '\0';
363 for (list = spi_global_app_data->events; list; list = list->next)
366 if (spi_event_is_subtype (data, evdata->data))
380 * Emits an AT-SPI event.
381 * AT-SPI events names are split into three parts:
383 * This is mapped onto D-Bus events as:
384 * D-Bus Interface:Signal Name:Detail argument
386 * Marshals a basic type into the 'any_data' attribute of
390 emit_event (AtkObject *obj,
394 dbus_int32_t detail1,
395 dbus_int32_t detail2,
398 void (*append_variant) (DBusMessageIter *, const char *, const void *))
400 DBusConnection *bus = spi_global_app_data->bus;
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))
415 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
418 * This is very annoying, but as '-' isn't a legal signal
419 * name in D-Bus (Why not??!?) The names need converting
420 * on this side, and again on the client side.
422 cname = signal_name_to_dbus (major);
423 sig = dbus_message_new_signal(path, klass, cname);
425 dbus_message_iter_init_append(sig, &iter);
427 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
428 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
429 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
430 append_variant (&iter, type, val);
431 spi_object_append_reference (&iter, spi_global_app_data->root);
433 dbus_connection_send(bus, sig, NULL);
434 dbus_message_unref(sig);
436 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
437 spi_object_lease_if_needed (G_OBJECT (obj));
443 /*---------------------------------------------------------------------------*/
446 * The focus listener handles the ATK 'focus' signal and forwards it
447 * as the AT-SPI event, 'focus:'
450 focus_tracker (AtkObject * accessible)
452 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
453 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
456 /*---------------------------------------------------------------------------*/
458 #define PCHANGE "PropertyChange"
461 * This handler handles the following ATK signals and
462 * converts them to AT-SPI events:
464 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
466 * The property-name is part of the ATK property-change signal.
469 property_event_listener (GSignalInvocationHint * signal_hint,
470 guint n_param_values,
471 const GValue * param_values, gpointer data)
473 AtkObject *accessible;
474 AtkPropertyValues *values;
476 const gchar *pname = NULL;
482 accessible = g_value_get_object (¶m_values[0]);
483 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
485 pname = values[0].property_name;
487 /* TODO Could improve this control statement by matching
488 * on only the end of the signal names,
490 if (strcmp (pname, "accessible-name") == 0)
492 s1 = atk_object_get_name (accessible);
494 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
495 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
497 else if (strcmp (pname, "accessible-description") == 0)
499 s1 = atk_object_get_description (accessible);
501 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
502 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
504 else if (strcmp (pname, "accessible-parent") == 0)
506 otemp = atk_object_get_parent (accessible);
508 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
509 "(so)", otemp, append_object);
511 else if (strcmp (pname, "accessible-role") == 0)
513 i = atk_object_get_role (accessible);
514 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
515 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
517 else if (strcmp (pname, "accessible-table-summary") == 0)
519 otemp = atk_table_get_summary (ATK_TABLE (accessible));
521 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
522 "(so)", otemp, append_object);
524 else if (strcmp (pname, "accessible-table-column-header") == 0)
526 i = g_value_get_int (&(values->new_value));
527 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
529 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
530 "(so)", otemp, append_object);
532 else if (strcmp (pname, "accessible-table-row-header") == 0)
534 i = g_value_get_int (&(values->new_value));
535 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
537 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
538 "(so)", otemp, append_object);
540 else if (strcmp (pname, "accessible-table-row-description") == 0)
542 i = g_value_get_int (&(values->new_value));
543 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
544 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
545 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
547 else if (strcmp (pname, "accessible-table-column-description") == 0)
549 i = g_value_get_int (&(values->new_value));
550 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
551 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
552 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
554 else if (strcmp (pname, "accessible-table-caption-object") == 0)
556 otemp = atk_table_get_caption (ATK_TABLE (accessible));
557 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
558 "(so)", otemp, append_object);
562 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
563 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
568 /*---------------------------------------------------------------------------*/
570 #define STATE_CHANGED "state-changed"
573 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
574 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
575 * the param-name is part of the ATK state-change signal.
578 state_event_listener (GSignalInvocationHint * signal_hint,
579 guint n_param_values,
580 const GValue * param_values, gpointer data)
582 AtkObject *accessible;
586 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
587 pname = g_strdup (g_value_get_string (¶m_values[1]));
589 /* TODO - Possibly ignore a change to the 'defunct' state.
590 * This is because without reference counting defunct objects should be removed.
592 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
593 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
594 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
599 /*---------------------------------------------------------------------------*/
602 * The window event listener handles the following ATK signals and forwards
603 * them as AT-SPI events:
605 * window:create -> window:create
606 * window:destroy -> window:destroy
607 * window:minimize -> window:minimize
608 * window:maximize -> window:maximize
609 * window:activate -> window:activate
610 * window:deactivate -> window:deactivate
613 window_event_listener (GSignalInvocationHint * signal_hint,
614 guint n_param_values,
615 const GValue * param_values, gpointer data)
617 AtkObject *accessible;
618 GSignalQuery signal_query;
619 const gchar *name, *s;
621 g_signal_query (signal_hint->signal_id, &signal_query);
622 name = signal_query.signal_name;
624 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
625 s = atk_object_get_name (accessible);
626 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
627 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
632 /*---------------------------------------------------------------------------*/
635 * The document event listener handles the following ATK signals
636 * and converts them to AT-SPI events:
638 * Gtk:AtkDocument:load-complete -> document:load-complete
639 * Gtk:AtkDocument:load-stopped -> document:load-stopped
640 * Gtk:AtkDocument:reload -> document:reload
643 document_event_listener (GSignalInvocationHint * signal_hint,
644 guint n_param_values,
645 const GValue * param_values, gpointer data)
647 AtkObject *accessible;
648 GSignalQuery signal_query;
649 const gchar *name, *s;
651 g_signal_query (signal_hint->signal_id, &signal_query);
652 name = signal_query.signal_name;
654 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
655 s = atk_object_get_name (accessible);
656 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
657 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
662 /*---------------------------------------------------------------------------*/
665 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
666 * this to an AT-SPI event - "object:bounds-changed".
669 bounds_event_listener (GSignalInvocationHint * signal_hint,
670 guint n_param_values,
671 const GValue * param_values, gpointer data)
673 AtkObject *accessible;
674 AtkRectangle *atk_rect;
675 GSignalQuery signal_query;
676 const gchar *name, *s;
678 g_signal_query (signal_hint->signal_id, &signal_query);
679 name = signal_query.signal_name;
681 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
683 if (G_VALUE_HOLDS_BOXED (param_values + 1))
685 atk_rect = g_value_get_boxed (param_values + 1);
687 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
688 "(iiii)", atk_rect, append_rect);
693 /*---------------------------------------------------------------------------*/
696 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
697 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
701 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
702 guint n_param_values,
703 const GValue * param_values, gpointer data)
705 AtkObject *accessible;
707 GSignalQuery signal_query;
708 const gchar *name, *minor;
711 g_signal_query (signal_hint->signal_id, &signal_query);
712 name = signal_query.signal_name;
714 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
715 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
716 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
717 minor = g_quark_to_string (signal_hint->detail);
719 detail1 = atk_object_get_index_in_parent (child);
721 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
722 "(so)", child, append_object);
726 /*---------------------------------------------------------------------------*/
729 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
730 * converts it to the AT-SPI signal - 'object:link-selected'
734 link_selected_event_listener (GSignalInvocationHint * signal_hint,
735 guint n_param_values,
736 const GValue * param_values, gpointer data)
738 AtkObject *accessible;
739 GSignalQuery signal_query;
740 const gchar *name, *minor;
743 g_signal_query (signal_hint->signal_id, &signal_query);
744 name = signal_query.signal_name;
746 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
747 minor = g_quark_to_string (signal_hint->detail);
749 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
750 detail1 = g_value_get_int (¶m_values[1]);
752 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
753 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
757 /*---------------------------------------------------------------------------*/
760 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
761 * converts it to the AT-SPI signal - 'object:text-changed'
765 text_changed_event_listener (GSignalInvocationHint * signal_hint,
766 guint n_param_values,
767 const GValue * param_values, gpointer data)
769 AtkObject *accessible;
770 GSignalQuery signal_query;
771 const gchar *name, *minor;
773 gint detail1, detail2;
775 g_signal_query (signal_hint->signal_id, &signal_query);
776 name = signal_query.signal_name;
778 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
779 minor = g_quark_to_string (signal_hint->detail);
781 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
782 detail1 = g_value_get_int (¶m_values[1]);
784 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
785 detail2 = g_value_get_int (¶m_values[2]);
788 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
790 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
791 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
795 /*---------------------------------------------------------------------------*/
798 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
799 * converts it to the AT-SPI signal - 'object:text-selection-changed'
803 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
804 guint n_param_values,
805 const GValue * param_values,
808 AtkObject *accessible;
809 GSignalQuery signal_query;
810 const gchar *name, *minor;
811 gint detail1, detail2;
813 g_signal_query (signal_hint->signal_id, &signal_query);
814 name = signal_query.signal_name;
816 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
817 minor = g_quark_to_string (signal_hint->detail);
819 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
820 detail1 = g_value_get_int (¶m_values[1]);
822 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
823 detail2 = g_value_get_int (¶m_values[2]);
825 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
826 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
830 /*---------------------------------------------------------------------------*/
833 * Children changed signal converter and forwarder.
835 * Klass (Interface) org.a11y.atspi.Event.Object
836 * Major is the signal name.
837 * Minor is 'add' or 'remove'
838 * detail1 is the index.
840 * any_data is the child reference.
843 children_changed_event_listener (GSignalInvocationHint * signal_hint,
844 guint n_param_values,
845 const GValue * param_values, gpointer data)
847 GSignalQuery signal_query;
848 const gchar *name, *minor;
849 gint detail1, detail2 = 0;
851 AtkObject *accessible, *ao=NULL;
854 g_signal_query (signal_hint->signal_id, &signal_query);
855 name = signal_query.signal_name;
857 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
858 minor = g_quark_to_string (signal_hint->detail);
860 detail1 = g_value_get_uint (param_values + 1);
861 child = g_value_get_pointer (param_values + 2);
863 if (ATK_IS_OBJECT (child))
865 ao = ATK_OBJECT (child);
866 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
867 "(so)", ao, append_object);
869 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
871 ao = atk_object_ref_accessible_child (accessible,
873 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
874 "(so)", ao, append_object);
878 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
879 "(so)", ao, append_object);
885 /*---------------------------------------------------------------------------*/
888 toplevel_added_event_listener (AtkObject * accessible,
889 guint index, AtkObject * child)
891 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
892 "(so)", child, append_object);
896 toplevel_removed_event_listener (AtkObject * accessible,
897 guint index, AtkObject * child)
899 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
900 "(so)", child, append_object);
903 /*---------------------------------------------------------------------------*/
906 * Generic signal converter and forwarder.
908 * Klass (Interface) org.a11y.atspi.Event.Object
909 * Major is the signal name.
916 generic_event_listener (GSignalInvocationHint * signal_hint,
917 guint n_param_values,
918 const GValue * param_values, gpointer data)
920 AtkObject *accessible;
921 GSignalQuery signal_query;
923 int detail1 = 0, detail2 = 0;
925 g_signal_query (signal_hint->signal_id, &signal_query);
926 name = signal_query.signal_name;
928 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
930 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
931 detail1 = g_value_get_int (¶m_values[1]);
933 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
934 detail2 = g_value_get_int (¶m_values[2]);
936 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
937 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
941 /*---------------------------------------------------------------------------*/
944 * Registers the provided function as a handler for the given signal name
945 * and stores the signal id returned so that the function may be
946 * de-registered later.
949 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
953 id = atk_add_global_event_listener (listener, signal_name);
954 g_array_append_val (listener_ids, id);
958 * Initialization for the signal handlers.
960 * Registers all required signal handlers.
963 spi_atk_register_event_listeners (void)
966 * Kludge to make sure the Atk interface types are registered, otherwise
967 * the AtkText signal handlers below won't get registered
969 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
970 AtkObject *bo = atk_no_op_object_new (ao);
972 g_object_unref (G_OBJECT (bo));
975 /* Register for focus event notifications, and register app with central registry */
976 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
978 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
980 add_signal_listener (property_event_listener,
981 "Gtk:AtkObject:property-change");
982 add_signal_listener (window_event_listener, "window:create");
983 add_signal_listener (window_event_listener, "window:destroy");
984 add_signal_listener (window_event_listener, "window:minimize");
985 add_signal_listener (window_event_listener, "window:maximize");
986 add_signal_listener (window_event_listener, "window:restore");
987 add_signal_listener (window_event_listener, "window:activate");
988 add_signal_listener (window_event_listener, "window:deactivate");
989 add_signal_listener (document_event_listener,
990 "Gtk:AtkDocument:load-complete");
991 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
992 add_signal_listener (document_event_listener,
993 "Gtk:AtkDocument:load-stopped");
994 /* TODO Fake this event on the client side */
995 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
997 add_signal_listener (active_descendant_event_listener,
998 "Gtk:AtkObject:active-descendant-changed");
999 add_signal_listener (bounds_event_listener,
1000 "Gtk:AtkComponent:bounds-changed");
1001 add_signal_listener (text_selection_changed_event_listener,
1002 "Gtk:AtkText:text-selection-changed");
1003 add_signal_listener (text_changed_event_listener,
1004 "Gtk:AtkText:text-changed");
1005 add_signal_listener (link_selected_event_listener,
1006 "Gtk:AtkHypertext:link-selected");
1007 add_signal_listener (generic_event_listener,
1008 "Gtk:AtkObject:visible-data-changed");
1009 add_signal_listener (generic_event_listener,
1010 "Gtk:AtkSelection:selection-changed");
1011 add_signal_listener (generic_event_listener,
1012 "Gtk:AtkText:text-attributes-changed");
1013 add_signal_listener (generic_event_listener,
1014 "Gtk:AtkText:text-caret-moved");
1015 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1016 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1017 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1018 add_signal_listener (generic_event_listener,
1019 "Gtk:AtkTable:column-inserted");
1020 add_signal_listener (generic_event_listener,
1021 "Gtk:AtkTable:column-reordered");
1022 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1023 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1025 /* Children signal listeners */
1026 atk_add_global_event_listener (children_changed_event_listener,
1027 "Gtk:AtkObject:children-changed");
1030 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1031 "children-changed::add",
1032 (GCallback) toplevel_added_event_listener, NULL);
1034 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1035 "children-changed::remove",
1036 (GCallback) toplevel_removed_event_listener, NULL);
1040 * May add the following listeners to implement preemptive key listening for GTK+
1042 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1043 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1045 atk_bridge_key_event_listener_id =
1046 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1049 /*---------------------------------------------------------------------------*/
1052 * De-registers all ATK signal handlers.
1055 spi_atk_deregister_event_listeners (void)
1058 GArray *ids = listener_ids;
1059 listener_ids = NULL;
1061 if (atk_bridge_focus_tracker_id)
1062 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1064 for (i = 0; ids && i < ids->len; i++)
1066 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1069 if (atk_bridge_key_event_listener_id)
1070 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1073 /*---------------------------------------------------------------------------*/
1076 * TODO This function seems out of place here.
1078 * Emits fake deactivate signals on all top-level windows.
1079 * Used when shutting down AT-SPI, ensuring that all
1080 * windows have been removed on the client side.
1083 spi_atk_tidy_windows (void)
1089 root = atk_get_root ();
1090 n_children = atk_object_get_n_accessible_children (root);
1091 for (i = 0; i < n_children; i++)
1094 AtkStateSet *stateset;
1097 child = atk_object_ref_accessible_child (root, i);
1098 stateset = atk_object_ref_state_set (child);
1100 name = atk_object_get_name (child);
1101 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1103 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1104 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1106 g_object_unref (stateset);
1108 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1109 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1110 g_object_unref (child);
1115 spi_event_is_subtype (gchar **needle, gchar **haystack)
1117 while (*haystack && **haystack)
1119 if (g_strcmp0 (*needle, *haystack))
1127 /*END------------------------------------------------------------------------*/