2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2008, 2009, Codethink Ltd.
6 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
7 * Copyright 2001, 2002, 2003 Ximian, Inc.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
28 #include <droute/droute.h>
31 #include "accessible-register.h"
33 #include "common/spi-dbus.h"
35 static GArray *listener_ids = NULL;
37 static gint atk_bridge_key_event_listener_id;
38 static gint atk_bridge_focus_tracker_id;
40 /*---------------------------------------------------------------------------*/
42 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
43 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
44 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
45 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
47 /*---------------------------------------------------------------------------*/
49 typedef struct _SpiReentrantCallClosure
53 } SpiReentrantCallClosure;
56 switch_main_context (GMainContext *cnx)
60 dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
61 dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
62 for (list = spi_global_app_data->direct_connections; list; list = list->next)
63 dbus_connection_setup_with_g_main (list->data, cnx);
67 set_reply (DBusPendingCall * pending, void *user_data)
69 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
71 closure->reply = dbus_pending_call_steal_reply (pending);
72 switch_main_context (NULL);
73 g_main_loop_quit (closure->loop);
77 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
79 DBusPendingCall *pending;
80 SpiReentrantCallClosure closure;
81 GMainContext *main_context;
83 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
84 spi_global_app_data->main_context);
85 closure.loop = g_main_loop_new (main_context, FALSE);
86 switch_main_context (main_context);
88 if (!dbus_connection_send_with_reply (bus, message, &pending, -1))
90 switch_main_context (NULL);
93 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
94 g_main_loop_run (closure.loop);
96 g_main_loop_unref (closure.loop);
100 /*---------------------------------------------------------------------------*/
103 * Functionality related to sending device events from the application.
105 * This is used for forwarding key events on to the registry daemon.
109 Accessibility_DeviceEventController_NotifyListenersSync (const
110 Accessibility_DeviceEvent
113 DBusMessage *message;
115 dbus_bool_t consumed = FALSE;
118 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
120 SPI_DBUS_INTERFACE_DEC,
121 "NotifyListenersSync");
123 dbus_error_init (&error);
124 if (spi_dbus_marshal_deviceEvent (message, key_event))
127 send_and_allow_reentry (spi_global_app_data->bus, message);
131 dbus_error_init (&error);
132 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
134 dbus_message_unref (reply);
137 dbus_message_unref (message);
142 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
143 AtkKeyEventStruct * event)
145 keystroke->id = (dbus_int32_t) event->keyval;
146 keystroke->hw_code = (dbus_int16_t) event->keycode;
147 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
148 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
153 keystroke->event_string = g_strdup (event->string);
154 c = g_utf8_get_char_validated (event->string, -1);
155 if (c > 0 && g_unichar_isprint (c))
156 keystroke->is_text = TRUE;
158 keystroke->is_text = FALSE;
162 keystroke->event_string = g_strdup ("");
163 keystroke->is_text = FALSE;
167 case (ATK_KEY_EVENT_PRESS):
168 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
170 case (ATK_KEY_EVENT_RELEASE):
171 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
179 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
180 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
181 (int) keystroke->modifiers, keystroke->event_string,
182 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
188 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
191 Accessibility_DeviceEvent key_event;
193 spi_init_keystroke_from_atk_key_event (&key_event, event);
196 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
198 if (key_event.event_string)
199 g_free (key_event.event_string);
204 /*---------------------------------------------------------------------------*/
207 convert_signal_name (const gchar * s)
209 gchar *ret = g_strdup (s);
214 ret[0] = toupper (ret[0]);
215 while ((t = strchr (ret, '-')) != NULL)
217 memmove (t, t + 1, strlen (t));
224 replace_null (const gint type,
229 case DBUS_TYPE_STRING:
230 case DBUS_TYPE_OBJECT_PATH:
241 append_basic (DBusMessageIter *iter,
247 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
249 val = replace_null ((int) *type, val);
250 dbus_message_iter_append_basic(&sub, (int) *type, &val);
252 dbus_message_iter_close_container(iter, &sub);
256 append_rect (DBusMessageIter *iter,
260 DBusMessageIter variant, sub;
261 const AtkRectangle *rect = (const AtkRectangle *) val;
263 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
265 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
267 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
268 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
269 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
270 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
272 dbus_message_iter_close_container (&variant, &sub);
274 dbus_message_iter_close_container(iter, &variant);
278 append_object (DBusMessageIter *iter,
282 spi_object_append_v_reference (iter, ATK_OBJECT (val));
286 signal_name_to_dbus (const gchar *s)
288 gchar *ret = g_strdup (s);
293 ret [0] = toupper (ret [0]);
294 while ((t = strchr (ret, '-')) != NULL)
296 memmove (t, t + 1, strlen (t));
303 * Converts names of the form "active-descendant-changed" to
304 * "ActiveDescendantChanged"
307 ensure_proper_format (const char *name)
309 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
311 gboolean need_upper = TRUE;
319 *p++ = toupper (*name);
322 else if (*name == '-')
324 else if (*name == ':')
338 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
343 gboolean ret = FALSE;
346 if (!spi_global_app_data->events_initialized)
349 data [0] = ensure_proper_format (klass + 21);
350 data [1] = ensure_proper_format (major);
351 data [2] = ensure_proper_format (minor);
354 /* Hack: events such as "object::text-changed::insert:system" as
355 generated by Gecko */
356 data [2][strcspn (data [2], ":")] = '\0';
357 for (list = spi_global_app_data->events; list; list = list->next)
360 if (spi_event_is_subtype (data, evdata->data))
374 * Emits an AT-SPI event.
375 * AT-SPI events names are split into three parts:
377 * This is mapped onto D-Bus events as:
378 * D-Bus Interface:Signal Name:Detail argument
380 * Marshals a basic type into the 'any_data' attribute of
384 emit_event (AtkObject *obj,
388 dbus_int32_t detail1,
389 dbus_int32_t detail2,
392 void (*append_variant) (DBusMessageIter *, const char *, const void *))
394 DBusConnection *bus = spi_global_app_data->bus;
395 const char *path = spi_register_object_to_path (spi_global_register,
400 DBusMessageIter iter, iter_struct;
402 if (!klass) klass = "";
403 if (!major) major = "";
404 if (!minor) minor = "";
405 if (!type) type = "u";
407 if (!signal_is_needed (klass, major, minor))
411 * This is very annoying, but as '-' isn't a legal signal
412 * name in D-Bus (Why not??!?) The names need converting
413 * on this side, and again on the client side.
415 cname = signal_name_to_dbus (major);
416 sig = dbus_message_new_signal(path, klass, cname);
419 dbus_message_iter_init_append(sig, &iter);
421 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
422 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
423 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
424 append_variant (&iter, type, val);
425 spi_object_append_reference (&iter, spi_global_app_data->root);
427 dbus_connection_send(bus, sig, NULL);
428 dbus_message_unref(sig);
430 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
431 spi_object_lease_if_needed (G_OBJECT (obj));
434 /*---------------------------------------------------------------------------*/
437 * The focus listener handles the ATK 'focus' signal and forwards it
438 * as the AT-SPI event, 'focus:'
441 focus_tracker (AtkObject * accessible)
443 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
444 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
447 /*---------------------------------------------------------------------------*/
449 #define PCHANGE "PropertyChange"
452 * This handler handles the following ATK signals and
453 * converts them to AT-SPI events:
455 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
457 * The property-name is part of the ATK property-change signal.
460 property_event_listener (GSignalInvocationHint * signal_hint,
461 guint n_param_values,
462 const GValue * param_values, gpointer data)
464 AtkObject *accessible;
465 AtkPropertyValues *values;
467 const gchar *pname = NULL;
473 accessible = g_value_get_object (¶m_values[0]);
474 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
476 pname = values[0].property_name;
478 /* TODO Could improve this control statement by matching
479 * on only the end of the signal names,
481 if (strcmp (pname, "accessible-name") == 0)
483 s1 = atk_object_get_name (accessible);
485 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
486 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
488 else if (strcmp (pname, "accessible-description") == 0)
490 s1 = atk_object_get_description (accessible);
492 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
493 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
495 else if (strcmp (pname, "accessible-parent") == 0)
497 otemp = atk_object_get_parent (accessible);
499 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
500 "(so)", otemp, append_object);
502 else if (strcmp (pname, "accessible-role") == 0)
504 i = atk_object_get_role (accessible);
505 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
506 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
508 else if (strcmp (pname, "accessible-table-summary") == 0)
510 otemp = atk_table_get_summary (ATK_TABLE (accessible));
512 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
513 "(so)", otemp, append_object);
515 else if (strcmp (pname, "accessible-table-column-header") == 0)
517 i = g_value_get_int (&(values->new_value));
518 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
520 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
521 "(so)", otemp, append_object);
523 else if (strcmp (pname, "accessible-table-row-header") == 0)
525 i = g_value_get_int (&(values->new_value));
526 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
528 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
529 "(so)", otemp, append_object);
531 else if (strcmp (pname, "accessible-table-row-description") == 0)
533 i = g_value_get_int (&(values->new_value));
534 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
535 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
536 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
538 else if (strcmp (pname, "accessible-table-column-description") == 0)
540 i = g_value_get_int (&(values->new_value));
541 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
542 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
543 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
545 else if (strcmp (pname, "accessible-table-caption-object") == 0)
547 otemp = atk_table_get_caption (ATK_TABLE (accessible));
548 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
549 "(so)", otemp, append_object);
553 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
554 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
559 /*---------------------------------------------------------------------------*/
561 #define STATE_CHANGED "state-changed"
564 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
565 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
566 * the param-name is part of the ATK state-change signal.
569 state_event_listener (GSignalInvocationHint * signal_hint,
570 guint n_param_values,
571 const GValue * param_values, gpointer data)
573 AtkObject *accessible;
577 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
578 pname = g_strdup (g_value_get_string (¶m_values[1]));
580 /* TODO - Possibly ignore a change to the 'defunct' state.
581 * This is because without reference counting defunct objects should be removed.
583 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
584 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
585 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
590 /*---------------------------------------------------------------------------*/
593 * The window event listener handles the following ATK signals and forwards
594 * them as AT-SPI events:
596 * window:create -> window:create
597 * window:destroy -> window:destroy
598 * window:minimize -> window:minimize
599 * window:maximize -> window:maximize
600 * window:activate -> window:activate
601 * window:deactivate -> window:deactivate
604 window_event_listener (GSignalInvocationHint * signal_hint,
605 guint n_param_values,
606 const GValue * param_values, gpointer data)
608 AtkObject *accessible;
609 GSignalQuery signal_query;
610 const gchar *name, *s;
612 g_signal_query (signal_hint->signal_id, &signal_query);
613 name = signal_query.signal_name;
615 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
616 s = atk_object_get_name (accessible);
617 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
618 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
623 /*---------------------------------------------------------------------------*/
626 * The document event listener handles the following ATK signals
627 * and converts them to AT-SPI events:
629 * Gtk:AtkDocument:load-complete -> document:load-complete
630 * Gtk:AtkDocument:load-stopped -> document:load-stopped
631 * Gtk:AtkDocument:reload -> document:reload
634 document_event_listener (GSignalInvocationHint * signal_hint,
635 guint n_param_values,
636 const GValue * param_values, gpointer data)
638 AtkObject *accessible;
639 GSignalQuery signal_query;
640 const gchar *name, *s;
642 g_signal_query (signal_hint->signal_id, &signal_query);
643 name = signal_query.signal_name;
645 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
646 s = atk_object_get_name (accessible);
647 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
648 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
653 /*---------------------------------------------------------------------------*/
656 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
657 * this to an AT-SPI event - "object:bounds-changed".
660 bounds_event_listener (GSignalInvocationHint * signal_hint,
661 guint n_param_values,
662 const GValue * param_values, gpointer data)
664 AtkObject *accessible;
665 AtkRectangle *atk_rect;
666 GSignalQuery signal_query;
667 const gchar *name, *s;
669 g_signal_query (signal_hint->signal_id, &signal_query);
670 name = signal_query.signal_name;
672 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
674 if (G_VALUE_HOLDS_BOXED (param_values + 1))
676 atk_rect = g_value_get_boxed (param_values + 1);
678 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
679 "(iiii)", atk_rect, append_rect);
684 /*---------------------------------------------------------------------------*/
687 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
688 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
692 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
693 guint n_param_values,
694 const GValue * param_values, gpointer data)
696 AtkObject *accessible;
698 GSignalQuery signal_query;
699 const gchar *name, *minor;
702 g_signal_query (signal_hint->signal_id, &signal_query);
703 name = signal_query.signal_name;
705 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
706 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
707 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
708 minor = g_quark_to_string (signal_hint->detail);
710 detail1 = atk_object_get_index_in_parent (child);
712 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
713 "(so)", child, append_object);
717 /*---------------------------------------------------------------------------*/
720 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
721 * converts it to the AT-SPI signal - 'object:link-selected'
725 link_selected_event_listener (GSignalInvocationHint * signal_hint,
726 guint n_param_values,
727 const GValue * param_values, gpointer data)
729 AtkObject *accessible;
730 GSignalQuery signal_query;
731 const gchar *name, *minor;
734 g_signal_query (signal_hint->signal_id, &signal_query);
735 name = signal_query.signal_name;
737 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
738 minor = g_quark_to_string (signal_hint->detail);
740 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
741 detail1 = g_value_get_int (¶m_values[1]);
743 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
744 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
748 /*---------------------------------------------------------------------------*/
751 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
752 * converts it to the AT-SPI signal - 'object:text-changed'
756 text_changed_event_listener (GSignalInvocationHint * signal_hint,
757 guint n_param_values,
758 const GValue * param_values, gpointer data)
760 AtkObject *accessible;
761 GSignalQuery signal_query;
762 const gchar *name, *minor;
764 gint detail1, detail2;
766 g_signal_query (signal_hint->signal_id, &signal_query);
767 name = signal_query.signal_name;
769 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
770 minor = g_quark_to_string (signal_hint->detail);
772 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
773 detail1 = g_value_get_int (¶m_values[1]);
775 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
776 detail2 = g_value_get_int (¶m_values[2]);
779 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
781 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
782 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
786 /*---------------------------------------------------------------------------*/
789 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
790 * converts it to the AT-SPI signal - 'object:text-selection-changed'
794 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
795 guint n_param_values,
796 const GValue * param_values,
799 AtkObject *accessible;
800 GSignalQuery signal_query;
801 const gchar *name, *minor;
802 gint detail1, detail2;
804 g_signal_query (signal_hint->signal_id, &signal_query);
805 name = signal_query.signal_name;
807 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
808 minor = g_quark_to_string (signal_hint->detail);
810 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
811 detail1 = g_value_get_int (¶m_values[1]);
813 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
814 detail2 = g_value_get_int (¶m_values[2]);
816 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
817 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
821 /*---------------------------------------------------------------------------*/
824 * Children changed signal converter and forwarder.
826 * Klass (Interface) org.a11y.atspi.Event.Object
827 * Major is the signal name.
828 * Minor is 'add' or 'remove'
829 * detail1 is the index.
831 * any_data is the child reference.
834 children_changed_event_listener (GSignalInvocationHint * signal_hint,
835 guint n_param_values,
836 const GValue * param_values, gpointer data)
838 GSignalQuery signal_query;
839 const gchar *name, *minor;
840 gint detail1, detail2 = 0;
842 AtkObject *accessible, *ao=NULL;
845 g_signal_query (signal_hint->signal_id, &signal_query);
846 name = signal_query.signal_name;
848 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
849 minor = g_quark_to_string (signal_hint->detail);
851 detail1 = g_value_get_uint (param_values + 1);
852 child = g_value_get_pointer (param_values + 2);
854 if (ATK_IS_OBJECT (child))
856 ao = ATK_OBJECT (child);
857 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
858 "(so)", ao, append_object);
860 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
862 ao = atk_object_ref_accessible_child (accessible,
864 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
865 "(so)", ao, append_object);
869 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
870 "(so)", ao, append_object);
876 /*---------------------------------------------------------------------------*/
879 toplevel_added_event_listener (AtkObject * accessible,
880 guint index, AtkObject * child)
882 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
883 "(so)", child, append_object);
887 toplevel_removed_event_listener (AtkObject * accessible,
888 guint index, AtkObject * child)
890 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
891 "(so)", child, append_object);
894 /*---------------------------------------------------------------------------*/
897 * Generic signal converter and forwarder.
899 * Klass (Interface) org.a11y.atspi.Event.Object
900 * Major is the signal name.
907 generic_event_listener (GSignalInvocationHint * signal_hint,
908 guint n_param_values,
909 const GValue * param_values, gpointer data)
911 AtkObject *accessible;
912 GSignalQuery signal_query;
914 int detail1 = 0, detail2 = 0;
916 g_signal_query (signal_hint->signal_id, &signal_query);
917 name = signal_query.signal_name;
919 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
921 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
922 detail1 = g_value_get_int (¶m_values[1]);
924 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
925 detail2 = g_value_get_int (¶m_values[2]);
927 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
928 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
932 /*---------------------------------------------------------------------------*/
935 * Registers the provided function as a handler for the given signal name
936 * and stores the signal id returned so that the function may be
937 * de-registered later.
940 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
944 id = atk_add_global_event_listener (listener, signal_name);
945 g_array_append_val (listener_ids, id);
949 * Initialization for the signal handlers.
951 * Registers all required signal handlers.
954 spi_atk_register_event_listeners (void)
957 * Kludge to make sure the Atk interface types are registered, otherwise
958 * the AtkText signal handlers below won't get registered
960 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
961 AtkObject *bo = atk_no_op_object_new (ao);
963 g_object_unref (G_OBJECT (bo));
966 /* Register for focus event notifications, and register app with central registry */
967 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
969 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
971 add_signal_listener (property_event_listener,
972 "Gtk:AtkObject:property-change");
973 add_signal_listener (window_event_listener, "window:create");
974 add_signal_listener (window_event_listener, "window:destroy");
975 add_signal_listener (window_event_listener, "window:minimize");
976 add_signal_listener (window_event_listener, "window:maximize");
977 add_signal_listener (window_event_listener, "window:restore");
978 add_signal_listener (window_event_listener, "window:activate");
979 add_signal_listener (window_event_listener, "window:deactivate");
980 add_signal_listener (document_event_listener,
981 "Gtk:AtkDocument:load-complete");
982 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
983 add_signal_listener (document_event_listener,
984 "Gtk:AtkDocument:load-stopped");
985 /* TODO Fake this event on the client side */
986 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
988 add_signal_listener (active_descendant_event_listener,
989 "Gtk:AtkObject:active-descendant-changed");
990 add_signal_listener (bounds_event_listener,
991 "Gtk:AtkComponent:bounds-changed");
992 add_signal_listener (text_selection_changed_event_listener,
993 "Gtk:AtkText:text-selection-changed");
994 add_signal_listener (text_changed_event_listener,
995 "Gtk:AtkText:text-changed");
996 add_signal_listener (link_selected_event_listener,
997 "Gtk:AtkHypertext:link-selected");
998 add_signal_listener (generic_event_listener,
999 "Gtk:AtkObject:visible-data-changed");
1000 add_signal_listener (generic_event_listener,
1001 "Gtk:AtkSelection:selection-changed");
1002 add_signal_listener (generic_event_listener,
1003 "Gtk:AtkText:text-attributes-changed");
1004 add_signal_listener (generic_event_listener,
1005 "Gtk:AtkText:text-caret-moved");
1006 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1007 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1008 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1009 add_signal_listener (generic_event_listener,
1010 "Gtk:AtkTable:column-inserted");
1011 add_signal_listener (generic_event_listener,
1012 "Gtk:AtkTable:column-reordered");
1013 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1014 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1016 /* Children signal listeners */
1017 atk_add_global_event_listener (children_changed_event_listener,
1018 "Gtk:AtkObject:children-changed");
1021 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1022 "children-changed::add",
1023 (GCallback) toplevel_added_event_listener, NULL);
1025 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1026 "children-changed::remove",
1027 (GCallback) toplevel_removed_event_listener, NULL);
1031 * May add the following listeners to implement preemptive key listening for GTK+
1033 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1034 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1036 atk_bridge_key_event_listener_id =
1037 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1040 /*---------------------------------------------------------------------------*/
1043 * De-registers all ATK signal handlers.
1046 spi_atk_deregister_event_listeners (void)
1049 GArray *ids = listener_ids;
1050 listener_ids = NULL;
1052 if (atk_bridge_focus_tracker_id)
1053 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1055 for (i = 0; ids && i < ids->len; i++)
1057 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1060 if (atk_bridge_key_event_listener_id)
1061 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1064 /*---------------------------------------------------------------------------*/
1067 * TODO This function seems out of place here.
1069 * Emits fake deactivate signals on all top-level windows.
1070 * Used when shutting down AT-SPI, ensuring that all
1071 * windows have been removed on the client side.
1074 spi_atk_tidy_windows (void)
1080 root = atk_get_root ();
1081 n_children = atk_object_get_n_accessible_children (root);
1082 for (i = 0; i < n_children; i++)
1085 AtkStateSet *stateset;
1088 child = atk_object_ref_accessible_child (root, i);
1089 stateset = atk_object_ref_state_set (child);
1091 name = atk_object_get_name (child);
1092 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1094 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1095 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1097 g_object_unref (stateset);
1099 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1100 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1101 g_object_unref (child);
1106 spi_event_is_subtype (gchar **needle, gchar **haystack)
1108 while (*haystack && **haystack)
1110 if (g_strcmp0 (*needle, *haystack))
1118 /*END------------------------------------------------------------------------*/