2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2011, F123 Consulting & Mais Diferenças
6 * Copyright 2008, 2009, Codethink Ltd.
7 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
8 * Copyright 2001, 2002, 2003 Ximian, Inc.
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
20 * You should have received a copy of the GNU Library General Public
21 * License along with this library; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 02111-1307, USA.
30 #include <droute/droute.h>
31 #include <atspi/atspi.h>
34 #include "accessible-register.h"
40 static GArray *listener_ids = NULL;
42 static gint atk_bridge_key_event_listener_id;
43 static gint atk_bridge_focus_tracker_id;
45 /*---------------------------------------------------------------------------*/
47 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
48 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
49 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
50 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
52 /*---------------------------------------------------------------------------*/
54 typedef struct _SpiReentrantCallClosure
60 } SpiReentrantCallClosure;
63 switch_main_context (GMainContext *cnx)
68 atspi_dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
70 atspi_dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
71 for (list = spi_global_app_data->direct_connections; list; list = list->next)
72 atspi_dbus_connection_setup_with_g_main (list->data, cnx);
76 set_reply (DBusPendingCall * pending, void *user_data)
78 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
80 closure->reply = dbus_pending_call_steal_reply (pending);
81 dbus_pending_call_unref (pending);
82 switch_main_context (NULL);
83 g_main_loop_quit (closure->loop);
87 timeout_reply (void *data)
89 SpiReentrantCallClosure *closure = data;
91 if (!dbus_connection_get_is_connected (closure->bus))
92 g_main_loop_quit (closure->loop);
93 closure->timeout = -1;
98 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
100 DBusPendingCall *pending;
101 SpiReentrantCallClosure closure;
102 GMainContext *main_context;
104 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
105 spi_global_app_data->main_context);
107 closure.loop = g_main_loop_new (main_context, FALSE);
108 closure.reply = NULL;
109 switch_main_context (main_context);
111 if (!dbus_connection_send_with_reply (bus, message, &pending, 9000) || !pending)
113 switch_main_context (NULL);
116 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
117 closure.timeout = g_timeout_add (500, timeout_reply, &closure);
118 g_main_loop_run (closure.loop);
119 if (closure.timeout != -1)
120 g_source_remove (closure.timeout);
122 g_main_loop_unref (closure.loop);
123 return closure.reply;
126 /*---------------------------------------------------------------------------*/
129 * Functionality related to sending device events from the application.
131 * This is used for forwarding key events on to the registry daemon.
135 Accessibility_DeviceEventController_NotifyListenersSync (const
139 DBusMessage *message;
141 dbus_bool_t consumed = FALSE;
144 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
146 ATSPI_DBUS_INTERFACE_DEC,
147 "NotifyListenersSync");
149 dbus_error_init (&error);
150 if (spi_dbus_marshal_deviceEvent (message, key_event))
153 send_and_allow_reentry (spi_global_app_data->bus, message);
157 dbus_error_init (&error);
158 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
160 dbus_message_unref (reply);
163 dbus_message_unref (message);
168 spi_init_keystroke_from_atk_key_event (AtspiDeviceEvent * keystroke,
169 AtkKeyEventStruct * event)
171 keystroke->id = (dbus_int32_t) event->keyval;
172 keystroke->hw_code = (dbus_int16_t) event->keycode;
173 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
174 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
179 keystroke->event_string = g_strdup (event->string);
180 c = g_utf8_get_char_validated (event->string, -1);
181 if (c > 0 && g_unichar_isprint (c))
182 keystroke->is_text = TRUE;
184 keystroke->is_text = FALSE;
188 keystroke->event_string = g_strdup ("");
189 keystroke->is_text = FALSE;
193 case (ATK_KEY_EVENT_PRESS):
194 keystroke->type = ATSPI_KEY_PRESSED;
196 case (ATK_KEY_EVENT_RELEASE):
197 keystroke->type = ATSPI_KEY_RELEASED;
205 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
206 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
207 (int) keystroke->modifiers, keystroke->event_string,
208 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
214 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
217 AtspiDeviceEvent key_event;
219 spi_init_keystroke_from_atk_key_event (&key_event, event);
222 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
224 if (key_event.event_string)
225 g_free (key_event.event_string);
230 /*---------------------------------------------------------------------------*/
233 convert_signal_name (const gchar * s)
235 gchar *ret = g_strdup (s);
240 ret[0] = toupper (ret[0]);
241 while ((t = strchr (ret, '-')) != NULL)
243 memmove (t, t + 1, strlen (t));
250 validate_for_dbus (const gint type,
255 case DBUS_TYPE_STRING:
256 case DBUS_TYPE_OBJECT_PATH:
259 else if (!g_utf8_validate (val, -1, NULL))
261 g_warning ("atk-bridge: Received bad UTF-8 string when emitting event");
272 append_basic (DBusMessageIter *iter,
278 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
280 val = validate_for_dbus ((int) *type, val);
281 dbus_message_iter_append_basic(&sub, (int) *type, &val);
283 dbus_message_iter_close_container(iter, &sub);
287 append_rect (DBusMessageIter *iter,
291 DBusMessageIter variant, sub;
292 const AtkRectangle *rect = (const AtkRectangle *) val;
294 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
296 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
298 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
299 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
300 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
301 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
303 dbus_message_iter_close_container (&variant, &sub);
305 dbus_message_iter_close_container(iter, &variant);
309 append_object (DBusMessageIter *iter,
313 spi_object_append_v_reference (iter, ATK_OBJECT (val));
317 signal_name_to_dbus (const gchar *s)
319 gchar *ret = g_strdup (s);
324 ret [0] = toupper (ret [0]);
325 while ((t = strchr (ret, '-')) != NULL)
327 memmove (t, t + 1, strlen (t));
334 * Converts names of the form "active-descendant-changed" to
335 * "ActiveDescendantChanged"
338 ensure_proper_format (const char *name)
340 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
342 gboolean need_upper = TRUE;
350 *p++ = toupper (*name);
353 else if (*name == '-')
355 else if (*name == ':')
369 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
374 gboolean ret = FALSE;
377 if (!spi_global_app_data->events_initialized)
380 data [0] = ensure_proper_format (klass + 21);
381 data [1] = ensure_proper_format (major);
382 data [2] = ensure_proper_format (minor);
385 /* Hack: Always pass events that update the cache.
386 * TODO: FOr 2.2, have at-spi2-core define a special "cache listener" for
387 * this instead, so that we don't send these if no one is listening */
388 if (!g_strcmp0 (data [1], "ChildrenChanged") ||
389 !g_strcmp0 (data [1], "PropertyChange") ||
390 !g_strcmp0 (data [1], "StateChanged"))
398 /* Hack: events such as "object::text-changed::insert:system" as
399 generated by Gecko */
400 data [2][strcspn (data [2], ":")] = '\0';
401 for (list = spi_global_app_data->events; list; list = list->next)
404 if (spi_event_is_subtype (data, evdata->data))
412 g_print("event: %s %s %s: %d\n", data[0], data[1], data[2], ret);
421 * Emits an AT-SPI event.
422 * AT-SPI events names are split into three parts:
424 * This is mapped onto D-Bus events as:
425 * D-Bus Interface:Signal Name:Detail argument
427 * Marshals a basic type into the 'any_data' attribute of
431 emit_event (AtkObject *obj,
435 dbus_int32_t detail1,
436 dbus_int32_t detail2,
439 void (*append_variant) (DBusMessageIter *, const char *, const void *))
441 DBusConnection *bus = spi_global_app_data->bus;
446 DBusMessageIter iter, iter_struct;
448 if (!klass) klass = "";
449 if (!major) major = "";
450 if (!minor) minor = "";
451 if (!type) type = "u";
453 if (!signal_is_needed (klass, major, minor))
456 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
459 * This is very annoying, but as '-' isn't a legal signal
460 * name in D-Bus (Why not??!?) The names need converting
461 * on this side, and again on the client side.
463 cname = signal_name_to_dbus (major);
464 sig = dbus_message_new_signal(path, klass, cname);
466 dbus_message_iter_init_append(sig, &iter);
468 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
469 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
470 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
471 append_variant (&iter, type, val);
472 spi_object_append_reference (&iter, spi_global_app_data->root);
474 dbus_connection_send(bus, sig, NULL);
475 dbus_message_unref(sig);
477 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
478 spi_object_lease_if_needed (G_OBJECT (obj));
484 /*---------------------------------------------------------------------------*/
487 * The focus listener handles the ATK 'focus' signal and forwards it
488 * as the AT-SPI event, 'focus:'
491 focus_tracker (AtkObject * accessible)
493 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
494 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
497 /*---------------------------------------------------------------------------*/
499 #define PCHANGE "PropertyChange"
502 * This handler handles the following ATK signals and
503 * converts them to AT-SPI events:
505 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
507 * The property-name is part of the ATK property-change signal.
510 property_event_listener (GSignalInvocationHint * signal_hint,
511 guint n_param_values,
512 const GValue * param_values, gpointer data)
514 AtkObject *accessible;
515 AtkPropertyValues *values;
517 const gchar *pname = NULL;
523 accessible = g_value_get_object (¶m_values[0]);
524 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
526 pname = values[0].property_name;
528 /* TODO Could improve this control statement by matching
529 * on only the end of the signal names,
531 if (strcmp (pname, "accessible-name") == 0)
533 s1 = atk_object_get_name (accessible);
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-description") == 0)
540 s1 = atk_object_get_description (accessible);
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-parent") == 0)
547 otemp = atk_object_get_parent (accessible);
549 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
550 "(so)", otemp, append_object);
552 else if (strcmp (pname, "accessible-role") == 0)
554 i = atk_object_get_role (accessible);
555 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
556 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
558 else if (strcmp (pname, "accessible-table-summary") == 0)
560 otemp = atk_table_get_summary (ATK_TABLE (accessible));
562 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
563 "(so)", otemp, append_object);
565 else if (strcmp (pname, "accessible-table-column-header") == 0)
567 i = g_value_get_int (&(values->new_value));
568 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
570 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
571 "(so)", otemp, append_object);
573 else if (strcmp (pname, "accessible-table-row-header") == 0)
575 i = g_value_get_int (&(values->new_value));
576 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
578 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
579 "(so)", otemp, append_object);
581 else if (strcmp (pname, "accessible-table-row-description") == 0)
583 i = g_value_get_int (&(values->new_value));
584 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
585 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
586 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
588 else if (strcmp (pname, "accessible-table-column-description") == 0)
590 i = g_value_get_int (&(values->new_value));
591 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
592 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
593 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
595 else if (strcmp (pname, "accessible-table-caption-object") == 0)
597 otemp = atk_table_get_caption (ATK_TABLE (accessible));
598 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
599 "(so)", otemp, append_object);
603 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
604 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
609 /*---------------------------------------------------------------------------*/
611 #define STATE_CHANGED "state-changed"
614 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
615 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
616 * the param-name is part of the ATK state-change signal.
619 state_event_listener (GSignalInvocationHint * signal_hint,
620 guint n_param_values,
621 const GValue * param_values, gpointer data)
623 AtkObject *accessible;
627 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
628 pname = g_value_get_string (¶m_values[1]);
630 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
631 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
632 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
634 if (!g_strcmp0 (pname, "defunct"))
635 spi_register_deregister_object (spi_global_register, G_OBJECT (accessible),
640 /*---------------------------------------------------------------------------*/
643 * The window event listener handles the following ATK signals and forwards
644 * them as AT-SPI events:
646 * window:create -> window:create
647 * window:destroy -> window:destroy
648 * window:minimize -> window:minimize
649 * window:maximize -> window:maximize
650 * window:activate -> window:activate
651 * window:deactivate -> window:deactivate
654 window_event_listener (GSignalInvocationHint * signal_hint,
655 guint n_param_values,
656 const GValue * param_values, gpointer data)
658 AtkObject *accessible;
659 GSignalQuery signal_query;
660 const gchar *name, *s;
662 g_signal_query (signal_hint->signal_id, &signal_query);
663 name = signal_query.signal_name;
665 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
666 s = atk_object_get_name (accessible);
667 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
668 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
673 /*---------------------------------------------------------------------------*/
676 * The document event listener handles the following ATK signals
677 * and converts them to AT-SPI events:
679 * Gtk:AtkDocument:load-complete -> document:load-complete
680 * Gtk:AtkDocument:load-stopped -> document:load-stopped
681 * Gtk:AtkDocument:reload -> document:reload
684 document_event_listener (GSignalInvocationHint * signal_hint,
685 guint n_param_values,
686 const GValue * param_values, gpointer data)
688 AtkObject *accessible;
689 GSignalQuery signal_query;
690 const gchar *name, *s;
692 g_signal_query (signal_hint->signal_id, &signal_query);
693 name = signal_query.signal_name;
695 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
696 s = atk_object_get_name (accessible);
697 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
698 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
703 /*---------------------------------------------------------------------------*/
706 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
707 * this to an AT-SPI event - "object:bounds-changed".
710 bounds_event_listener (GSignalInvocationHint * signal_hint,
711 guint n_param_values,
712 const GValue * param_values, gpointer data)
714 AtkObject *accessible;
715 AtkRectangle *atk_rect;
716 GSignalQuery signal_query;
717 const gchar *name, *s;
719 g_signal_query (signal_hint->signal_id, &signal_query);
720 name = signal_query.signal_name;
722 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
724 if (G_VALUE_HOLDS_BOXED (param_values + 1))
726 atk_rect = g_value_get_boxed (param_values + 1);
728 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
729 "(iiii)", atk_rect, append_rect);
734 /*---------------------------------------------------------------------------*/
737 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
738 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
742 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
743 guint n_param_values,
744 const GValue * param_values, gpointer data)
746 AtkObject *accessible;
748 GSignalQuery signal_query;
749 const gchar *name, *minor;
752 g_signal_query (signal_hint->signal_id, &signal_query);
753 name = signal_query.signal_name;
755 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
756 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
757 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
758 minor = g_quark_to_string (signal_hint->detail);
760 detail1 = atk_object_get_index_in_parent (child);
762 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
763 "(so)", child, append_object);
767 /*---------------------------------------------------------------------------*/
770 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
771 * converts it to the AT-SPI signal - 'object:link-selected'
775 link_selected_event_listener (GSignalInvocationHint * signal_hint,
776 guint n_param_values,
777 const GValue * param_values, gpointer data)
779 AtkObject *accessible;
780 GSignalQuery signal_query;
781 const gchar *name, *minor;
784 g_signal_query (signal_hint->signal_id, &signal_query);
785 name = signal_query.signal_name;
787 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
788 minor = g_quark_to_string (signal_hint->detail);
790 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
791 detail1 = g_value_get_int (¶m_values[1]);
793 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
794 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
798 /*---------------------------------------------------------------------------*/
801 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
802 * converts it to the AT-SPI signal - 'object:text-changed'
803 * This signal is deprecated by Gtk:AtkText:text-insert
804 * and Gtk:AtkText:text-remove
808 text_changed_event_listener (GSignalInvocationHint * signal_hint,
809 guint n_param_values,
810 const GValue * param_values, gpointer data)
812 AtkObject *accessible;
813 GSignalQuery signal_query;
814 const gchar *name, *minor;
816 gint detail1 = 0, detail2 = 0;
818 g_signal_query (signal_hint->signal_id, &signal_query);
819 name = signal_query.signal_name;
821 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
822 minor = g_quark_to_string (signal_hint->detail);
824 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
825 detail1 = g_value_get_int (¶m_values[1]);
827 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
828 detail2 = g_value_get_int (¶m_values[2]);
831 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
833 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
834 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
841 * Handles the ATK signal 'Gtk:AtkText:text-insert' and
842 * converts it to the AT-SPI signal - 'object:text-changed'
846 text_insert_event_listener (GSignalInvocationHint * signal_hint,
847 guint n_param_values,
848 const GValue * param_values, gpointer data)
850 AtkObject *accessible;
851 guint text_changed_signal_id;
852 GSignalQuery signal_query;
855 gint detail1 = 0, detail2 = 0;
857 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
858 /* Get signal name for 'Gtk:AtkText:text-changed' so
859 * we convert it to the AT-SPI signal - 'object:text-changed'
861 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
862 g_signal_query (text_changed_signal_id, &signal_query);
863 name = signal_query.signal_name;
866 /* Add the insert and keep any detail coming from atk */
867 minor = g_quark_to_string (signal_hint->detail);
869 minor = g_strconcat ("insert:", minor, NULL);
871 minor = g_strdup ("insert");
873 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
874 detail1 = g_value_get_int (¶m_values[1]);
876 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
877 detail2 = g_value_get_int (¶m_values[2]);
879 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
880 text = g_value_get_string (¶m_values[3]);
882 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
883 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
889 * Handles the ATK signal 'Gtk:AtkText:text-remove' and
890 * converts it to the AT-SPI signal - 'object:text-changed'
894 text_remove_event_listener (GSignalInvocationHint * signal_hint,
895 guint n_param_values,
896 const GValue * param_values, gpointer data)
898 AtkObject *accessible;
899 guint text_changed_signal_id;
900 GSignalQuery signal_query;
903 gint detail1 = 0, detail2 = 0;
905 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
906 /* Get signal name for 'Gtk:AtkText:text-changed' so
907 * we convert it to the AT-SPI signal - 'object:text-changed'
909 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
910 g_signal_query (text_changed_signal_id, &signal_query);
911 name = signal_query.signal_name;
913 minor = g_quark_to_string (signal_hint->detail);
915 /* Add the delete and keep any detail coming from atk */
916 minor = g_quark_to_string (signal_hint->detail);
918 minor = g_strconcat ("delete:", minor, NULL);
920 minor = g_strdup ("delete");
922 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
923 detail1 = g_value_get_int (¶m_values[1]);
925 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
926 detail2 = g_value_get_int (¶m_values[2]);
928 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
929 text = g_value_get_string (¶m_values[3]);
931 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
932 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
938 /*---------------------------------------------------------------------------*/
941 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
942 * converts it to the AT-SPI signal - 'object:text-selection-changed'
946 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
947 guint n_param_values,
948 const GValue * param_values,
951 AtkObject *accessible;
952 GSignalQuery signal_query;
953 const gchar *name, *minor;
954 gint detail1 = 0, detail2 = 0;
956 g_signal_query (signal_hint->signal_id, &signal_query);
957 name = signal_query.signal_name;
959 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
960 minor = g_quark_to_string (signal_hint->detail);
962 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
963 detail1 = g_value_get_int (¶m_values[1]);
965 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
966 detail2 = g_value_get_int (¶m_values[2]);
968 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
969 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
973 /*---------------------------------------------------------------------------*/
976 * Children changed signal converter and forwarder.
978 * Klass (Interface) org.a11y.atspi.Event.Object
979 * Major is the signal name.
980 * Minor is 'add' or 'remove'
981 * detail1 is the index.
983 * any_data is the child reference.
986 children_changed_event_listener (GSignalInvocationHint * signal_hint,
987 guint n_param_values,
988 const GValue * param_values, gpointer data)
990 GSignalQuery signal_query;
991 const gchar *name, *minor;
992 gint detail1 = 0, detail2 = 0;
994 AtkObject *accessible, *ao=NULL;
997 g_signal_query (signal_hint->signal_id, &signal_query);
998 name = signal_query.signal_name;
1000 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1001 minor = g_quark_to_string (signal_hint->detail);
1003 detail1 = g_value_get_uint (param_values + 1);
1004 child = g_value_get_pointer (param_values + 2);
1006 if (ATK_IS_OBJECT (child))
1008 ao = ATK_OBJECT (child);
1009 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1010 "(so)", ao, append_object);
1012 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
1014 ao = atk_object_ref_accessible_child (accessible,
1016 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1017 "(so)", ao, append_object);
1021 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1022 "(so)", ao, append_object);
1028 /*---------------------------------------------------------------------------*/
1031 toplevel_added_event_listener (AtkObject * accessible,
1032 guint index, AtkObject * child)
1034 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
1035 "(so)", child, append_object);
1039 toplevel_removed_event_listener (AtkObject * accessible,
1040 guint index, AtkObject * child)
1042 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
1043 "(so)", child, append_object);
1046 /*---------------------------------------------------------------------------*/
1049 * Generic signal converter and forwarder.
1051 * Klass (Interface) org.a11y.atspi.Event.Object
1052 * Major is the signal name.
1059 generic_event_listener (GSignalInvocationHint * signal_hint,
1060 guint n_param_values,
1061 const GValue * param_values, gpointer data)
1063 AtkObject *accessible;
1064 GSignalQuery signal_query;
1066 int detail1 = 0, detail2 = 0;
1068 g_signal_query (signal_hint->signal_id, &signal_query);
1069 name = signal_query.signal_name;
1071 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1073 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
1074 detail1 = g_value_get_int (¶m_values[1]);
1076 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
1077 detail2 = g_value_get_int (¶m_values[2]);
1079 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
1080 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
1084 /*---------------------------------------------------------------------------*/
1087 * Registers the provided function as a handler for the given signal name
1088 * and stores the signal id returned so that the function may be
1089 * de-registered later.
1092 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
1096 id = atk_add_global_event_listener (listener, signal_name);
1098 if (id > 0) /* id == 0 is a failure */
1099 g_array_append_val (listener_ids, id);
1105 * Initialization for the signal handlers.
1107 * Registers all required signal handlers.
1110 spi_atk_register_event_listeners (void)
1113 * Kludge to make sure the Atk interface types are registered, otherwise
1114 * the AtkText signal handlers below won't get registered
1116 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
1117 AtkObject *bo = atk_no_op_object_new (ao);
1120 g_object_unref (G_OBJECT (bo));
1121 g_object_unref (ao);
1125 g_warning ("atk_bridge: spi_atk-register_event_listeners called multiple times");
1129 /* Register for focus event notifications, and register app with central registry */
1130 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
1132 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
1134 add_signal_listener (property_event_listener,
1135 "Gtk:AtkObject:property-change");
1137 /* window events: we tentative try to register using the old format */
1138 id = add_signal_listener (window_event_listener, "window:create");
1142 /* If we are able to register using the old format, we assume
1143 * that the ATK implementor is managing window events without
1144 * AtkWindow. We can't use the opposite test because after
1145 * including AtkWindow on ATK you would be able to register to
1146 * that event, although the ATK implementor could or not use it.
1149 add_signal_listener (window_event_listener, "window:destroy");
1150 add_signal_listener (window_event_listener, "window:minimize");
1151 add_signal_listener (window_event_listener, "window:maximize");
1152 add_signal_listener (window_event_listener, "window:restore");
1153 add_signal_listener (window_event_listener, "window:activate");
1154 add_signal_listener (window_event_listener, "window:deactivate");
1158 add_signal_listener (window_event_listener, "Atk:AtkWindow:create");
1159 add_signal_listener (window_event_listener, "Atk:AtkWindow:destroy");
1160 add_signal_listener (window_event_listener, "Atk:AtkWindow:minimize");
1161 add_signal_listener (window_event_listener, "Atk:AtkWindow:maximize");
1162 add_signal_listener (window_event_listener, "Atk:AtkWindow:restore");
1163 add_signal_listener (window_event_listener, "Atk:AtkWindow:activate");
1164 add_signal_listener (window_event_listener, "Atk:AtkWindow:deactivate");
1167 add_signal_listener (document_event_listener,
1168 "Gtk:AtkDocument:load-complete");
1169 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
1170 add_signal_listener (document_event_listener,
1171 "Gtk:AtkDocument:load-stopped");
1172 /* TODO Fake this event on the client side */
1173 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
1175 add_signal_listener (active_descendant_event_listener,
1176 "Gtk:AtkObject:active-descendant-changed");
1177 add_signal_listener (bounds_event_listener,
1178 "Gtk:AtkComponent:bounds-changed");
1179 add_signal_listener (text_selection_changed_event_listener,
1180 "Gtk:AtkText:text-selection-changed");
1181 add_signal_listener (text_changed_event_listener,
1182 "Gtk:AtkText:text-changed");
1183 add_signal_listener (text_insert_event_listener,
1184 "Gtk:AtkText:text-insert");
1185 add_signal_listener (text_remove_event_listener,
1186 "Gtk:AtkText:text-remove");
1187 add_signal_listener (link_selected_event_listener,
1188 "Gtk:AtkHypertext:link-selected");
1189 add_signal_listener (generic_event_listener,
1190 "Gtk:AtkObject:visible-data-changed");
1191 add_signal_listener (generic_event_listener,
1192 "Gtk:AtkSelection:selection-changed");
1193 add_signal_listener (generic_event_listener,
1194 "Gtk:AtkText:text-attributes-changed");
1195 add_signal_listener (generic_event_listener,
1196 "Gtk:AtkText:text-caret-moved");
1197 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1198 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1199 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1200 add_signal_listener (generic_event_listener,
1201 "Gtk:AtkTable:column-inserted");
1202 add_signal_listener (generic_event_listener,
1203 "Gtk:AtkTable:column-reordered");
1204 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1205 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1206 add_signal_listener (children_changed_event_listener, "Gtk:AtkObject:children-changed");
1209 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1210 "children-changed::add",
1211 (GCallback) toplevel_added_event_listener, NULL);
1213 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1214 "children-changed::remove",
1215 (GCallback) toplevel_removed_event_listener, NULL);
1219 * May add the following listeners to implement preemptive key listening for GTK+
1221 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1222 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1224 atk_bridge_key_event_listener_id =
1225 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1228 /*---------------------------------------------------------------------------*/
1231 * De-registers all ATK signal handlers.
1234 spi_atk_deregister_event_listeners (void)
1237 GArray *ids = listener_ids;
1238 listener_ids = NULL;
1240 if (atk_bridge_focus_tracker_id)
1242 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1243 atk_bridge_focus_tracker_id = 0;
1248 for (i = 0; i < ids->len; i++)
1250 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1252 g_array_free (ids, TRUE);
1255 if (atk_bridge_key_event_listener_id)
1257 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1258 atk_bridge_key_event_listener_id = 0;
1262 /*---------------------------------------------------------------------------*/
1265 * TODO This function seems out of place here.
1267 * Emits fake deactivate signals on all top-level windows.
1268 * Used when shutting down AT-SPI, ensuring that all
1269 * windows have been removed on the client side.
1272 spi_atk_tidy_windows (void)
1278 root = atk_get_root ();
1279 n_children = atk_object_get_n_accessible_children (root);
1280 for (i = 0; i < n_children; i++)
1283 AtkStateSet *stateset;
1286 child = atk_object_ref_accessible_child (root, i);
1287 stateset = atk_object_ref_state_set (child);
1289 name = atk_object_get_name (child);
1290 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1292 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1293 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1295 g_object_unref (stateset);
1297 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1298 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1299 g_object_unref (child);
1304 spi_event_is_subtype (gchar **needle, gchar **haystack)
1306 while (*haystack && **haystack)
1308 if (g_strcmp0 (*needle, *haystack))
1316 /*END------------------------------------------------------------------------*/