2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2008, 2009, Codethink Ltd.
6 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
7 * Copyright 2001, 2002, 2003 Ximian, Inc.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
28 #include <droute/droute.h>
31 #include "accessible-register.h"
33 #include "common/spi-dbus.h"
35 static GArray *listener_ids = NULL;
37 static gint atk_bridge_key_event_listener_id;
38 static gint atk_bridge_focus_tracker_id;
40 /*---------------------------------------------------------------------------*/
42 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
43 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
44 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
45 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
47 /*---------------------------------------------------------------------------*/
49 typedef struct _SpiReentrantCallClosure
53 } SpiReentrantCallClosure;
56 switch_main_context (GMainContext *cnx)
58 /* This code won't work on dbus-glib earlier than 0.9.0 because of FDO#30574 */
59 if (spi_global_app_data->app_bus_addr [0] == '\0')
64 dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
65 dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
66 for (list = spi_global_app_data->direct_connections; list; list = list->next)
67 dbus_connection_setup_with_g_main (list->data, cnx);
71 set_reply (DBusPendingCall * pending, void *user_data)
73 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
75 closure->reply = dbus_pending_call_steal_reply (pending);
76 dbus_pending_call_unref (pending);
77 switch_main_context (NULL);
78 g_main_loop_quit (closure->loop);
82 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
84 DBusPendingCall *pending;
85 SpiReentrantCallClosure closure;
86 GMainContext *main_context;
88 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
89 spi_global_app_data->main_context);
90 closure.loop = g_main_loop_new (main_context, FALSE);
91 switch_main_context (main_context);
93 if (!dbus_connection_send_with_reply (bus, message, &pending, -1) || !pending)
95 switch_main_context (NULL);
98 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
99 g_main_loop_run (closure.loop);
101 g_main_loop_unref (closure.loop);
102 return closure.reply;
105 /*---------------------------------------------------------------------------*/
108 * Functionality related to sending device events from the application.
110 * This is used for forwarding key events on to the registry daemon.
114 Accessibility_DeviceEventController_NotifyListenersSync (const
115 Accessibility_DeviceEvent
118 DBusMessage *message;
120 dbus_bool_t consumed = FALSE;
123 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
125 SPI_DBUS_INTERFACE_DEC,
126 "NotifyListenersSync");
128 dbus_error_init (&error);
129 if (spi_dbus_marshal_deviceEvent (message, key_event))
132 send_and_allow_reentry (spi_global_app_data->bus, message);
136 dbus_error_init (&error);
137 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
139 dbus_message_unref (reply);
142 dbus_message_unref (message);
147 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
148 AtkKeyEventStruct * event)
150 keystroke->id = (dbus_int32_t) event->keyval;
151 keystroke->hw_code = (dbus_int16_t) event->keycode;
152 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
153 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
158 keystroke->event_string = g_strdup (event->string);
159 c = g_utf8_get_char_validated (event->string, -1);
160 if (c > 0 && g_unichar_isprint (c))
161 keystroke->is_text = TRUE;
163 keystroke->is_text = FALSE;
167 keystroke->event_string = g_strdup ("");
168 keystroke->is_text = FALSE;
172 case (ATK_KEY_EVENT_PRESS):
173 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
175 case (ATK_KEY_EVENT_RELEASE):
176 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
184 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
185 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
186 (int) keystroke->modifiers, keystroke->event_string,
187 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
193 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
196 Accessibility_DeviceEvent key_event;
198 spi_init_keystroke_from_atk_key_event (&key_event, event);
201 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
203 if (key_event.event_string)
204 g_free (key_event.event_string);
209 /*---------------------------------------------------------------------------*/
212 convert_signal_name (const gchar * s)
214 gchar *ret = g_strdup (s);
219 ret[0] = toupper (ret[0]);
220 while ((t = strchr (ret, '-')) != NULL)
222 memmove (t, t + 1, strlen (t));
229 replace_null (const gint type,
234 case DBUS_TYPE_STRING:
235 case DBUS_TYPE_OBJECT_PATH:
246 append_basic (DBusMessageIter *iter,
252 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
254 val = replace_null ((int) *type, val);
255 dbus_message_iter_append_basic(&sub, (int) *type, &val);
257 dbus_message_iter_close_container(iter, &sub);
261 append_rect (DBusMessageIter *iter,
265 DBusMessageIter variant, sub;
266 const AtkRectangle *rect = (const AtkRectangle *) val;
268 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
270 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
272 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
273 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
274 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
275 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
277 dbus_message_iter_close_container (&variant, &sub);
279 dbus_message_iter_close_container(iter, &variant);
283 append_object (DBusMessageIter *iter,
287 spi_object_append_v_reference (iter, ATK_OBJECT (val));
291 signal_name_to_dbus (const gchar *s)
293 gchar *ret = g_strdup (s);
298 ret [0] = toupper (ret [0]);
299 while ((t = strchr (ret, '-')) != NULL)
301 memmove (t, t + 1, strlen (t));
308 * Converts names of the form "active-descendant-changed" to
309 * "ActiveDescendantChanged"
312 ensure_proper_format (const char *name)
314 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
316 gboolean need_upper = TRUE;
324 *p++ = toupper (*name);
327 else if (*name == '-')
329 else if (*name == ':')
343 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
348 gboolean ret = FALSE;
351 if (!spi_global_app_data->events_initialized)
354 data [0] = ensure_proper_format (klass + 21);
355 data [1] = ensure_proper_format (major);
356 data [2] = ensure_proper_format (minor);
359 /* Hack: events such as "object::text-changed::insert:system" as
360 generated by Gecko */
361 data [2][strcspn (data [2], ":")] = '\0';
362 for (list = spi_global_app_data->events; list; list = list->next)
365 if (spi_event_is_subtype (data, evdata->data))
379 * Emits an AT-SPI event.
380 * AT-SPI events names are split into three parts:
382 * This is mapped onto D-Bus events as:
383 * D-Bus Interface:Signal Name:Detail argument
385 * Marshals a basic type into the 'any_data' attribute of
389 emit_event (AtkObject *obj,
393 dbus_int32_t detail1,
394 dbus_int32_t detail2,
397 void (*append_variant) (DBusMessageIter *, const char *, const void *))
399 DBusConnection *bus = spi_global_app_data->bus;
404 DBusMessageIter iter, iter_struct;
406 if (!klass) klass = "";
407 if (!major) major = "";
408 if (!minor) minor = "";
409 if (!type) type = "u";
411 if (!signal_is_needed (klass, major, minor))
414 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
417 * This is very annoying, but as '-' isn't a legal signal
418 * name in D-Bus (Why not??!?) The names need converting
419 * on this side, and again on the client side.
421 cname = signal_name_to_dbus (major);
422 sig = dbus_message_new_signal(path, klass, cname);
424 dbus_message_iter_init_append(sig, &iter);
426 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
427 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
428 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
429 append_variant (&iter, type, val);
430 spi_object_append_reference (&iter, spi_global_app_data->root);
432 dbus_connection_send(bus, sig, NULL);
433 dbus_message_unref(sig);
435 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
436 spi_object_lease_if_needed (G_OBJECT (obj));
442 /*---------------------------------------------------------------------------*/
445 * The focus listener handles the ATK 'focus' signal and forwards it
446 * as the AT-SPI event, 'focus:'
449 focus_tracker (AtkObject * accessible)
451 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
452 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
455 /*---------------------------------------------------------------------------*/
457 #define PCHANGE "PropertyChange"
460 * This handler handles the following ATK signals and
461 * converts them to AT-SPI events:
463 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
465 * The property-name is part of the ATK property-change signal.
468 property_event_listener (GSignalInvocationHint * signal_hint,
469 guint n_param_values,
470 const GValue * param_values, gpointer data)
472 AtkObject *accessible;
473 AtkPropertyValues *values;
475 const gchar *pname = NULL;
481 accessible = g_value_get_object (¶m_values[0]);
482 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
484 pname = values[0].property_name;
486 /* TODO Could improve this control statement by matching
487 * on only the end of the signal names,
489 if (strcmp (pname, "accessible-name") == 0)
491 s1 = atk_object_get_name (accessible);
493 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
494 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
496 else if (strcmp (pname, "accessible-description") == 0)
498 s1 = atk_object_get_description (accessible);
500 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
501 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
503 else if (strcmp (pname, "accessible-parent") == 0)
505 otemp = atk_object_get_parent (accessible);
507 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
508 "(so)", otemp, append_object);
510 else if (strcmp (pname, "accessible-role") == 0)
512 i = atk_object_get_role (accessible);
513 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
514 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
516 else if (strcmp (pname, "accessible-table-summary") == 0)
518 otemp = atk_table_get_summary (ATK_TABLE (accessible));
520 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
521 "(so)", otemp, append_object);
523 else if (strcmp (pname, "accessible-table-column-header") == 0)
525 i = g_value_get_int (&(values->new_value));
526 otemp = atk_table_get_column_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-header") == 0)
533 i = g_value_get_int (&(values->new_value));
534 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
536 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
537 "(so)", otemp, append_object);
539 else if (strcmp (pname, "accessible-table-row-description") == 0)
541 i = g_value_get_int (&(values->new_value));
542 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
543 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
544 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
546 else if (strcmp (pname, "accessible-table-column-description") == 0)
548 i = g_value_get_int (&(values->new_value));
549 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
550 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
551 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
553 else if (strcmp (pname, "accessible-table-caption-object") == 0)
555 otemp = atk_table_get_caption (ATK_TABLE (accessible));
556 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
557 "(so)", otemp, append_object);
561 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
562 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
567 /*---------------------------------------------------------------------------*/
569 #define STATE_CHANGED "state-changed"
572 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
573 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
574 * the param-name is part of the ATK state-change signal.
577 state_event_listener (GSignalInvocationHint * signal_hint,
578 guint n_param_values,
579 const GValue * param_values, gpointer data)
581 AtkObject *accessible;
585 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
586 pname = g_strdup (g_value_get_string (¶m_values[1]));
588 /* TODO - Possibly ignore a change to the 'defunct' state.
589 * This is because without reference counting defunct objects should be removed.
591 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
592 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
593 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
598 /*---------------------------------------------------------------------------*/
601 * The window event listener handles the following ATK signals and forwards
602 * them as AT-SPI events:
604 * window:create -> window:create
605 * window:destroy -> window:destroy
606 * window:minimize -> window:minimize
607 * window:maximize -> window:maximize
608 * window:activate -> window:activate
609 * window:deactivate -> window:deactivate
612 window_event_listener (GSignalInvocationHint * signal_hint,
613 guint n_param_values,
614 const GValue * param_values, gpointer data)
616 AtkObject *accessible;
617 GSignalQuery signal_query;
618 const gchar *name, *s;
620 g_signal_query (signal_hint->signal_id, &signal_query);
621 name = signal_query.signal_name;
623 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
624 s = atk_object_get_name (accessible);
625 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
626 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
631 /*---------------------------------------------------------------------------*/
634 * The document event listener handles the following ATK signals
635 * and converts them to AT-SPI events:
637 * Gtk:AtkDocument:load-complete -> document:load-complete
638 * Gtk:AtkDocument:load-stopped -> document:load-stopped
639 * Gtk:AtkDocument:reload -> document:reload
642 document_event_listener (GSignalInvocationHint * signal_hint,
643 guint n_param_values,
644 const GValue * param_values, gpointer data)
646 AtkObject *accessible;
647 GSignalQuery signal_query;
648 const gchar *name, *s;
650 g_signal_query (signal_hint->signal_id, &signal_query);
651 name = signal_query.signal_name;
653 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
654 s = atk_object_get_name (accessible);
655 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
656 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
661 /*---------------------------------------------------------------------------*/
664 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
665 * this to an AT-SPI event - "object:bounds-changed".
668 bounds_event_listener (GSignalInvocationHint * signal_hint,
669 guint n_param_values,
670 const GValue * param_values, gpointer data)
672 AtkObject *accessible;
673 AtkRectangle *atk_rect;
674 GSignalQuery signal_query;
675 const gchar *name, *s;
677 g_signal_query (signal_hint->signal_id, &signal_query);
678 name = signal_query.signal_name;
680 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
682 if (G_VALUE_HOLDS_BOXED (param_values + 1))
684 atk_rect = g_value_get_boxed (param_values + 1);
686 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
687 "(iiii)", atk_rect, append_rect);
692 /*---------------------------------------------------------------------------*/
695 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
696 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
700 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
701 guint n_param_values,
702 const GValue * param_values, gpointer data)
704 AtkObject *accessible;
706 GSignalQuery signal_query;
707 const gchar *name, *minor;
710 g_signal_query (signal_hint->signal_id, &signal_query);
711 name = signal_query.signal_name;
713 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
714 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
715 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
716 minor = g_quark_to_string (signal_hint->detail);
718 detail1 = atk_object_get_index_in_parent (child);
720 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
721 "(so)", child, append_object);
725 /*---------------------------------------------------------------------------*/
728 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
729 * converts it to the AT-SPI signal - 'object:link-selected'
733 link_selected_event_listener (GSignalInvocationHint * signal_hint,
734 guint n_param_values,
735 const GValue * param_values, gpointer data)
737 AtkObject *accessible;
738 GSignalQuery signal_query;
739 const gchar *name, *minor;
742 g_signal_query (signal_hint->signal_id, &signal_query);
743 name = signal_query.signal_name;
745 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
746 minor = g_quark_to_string (signal_hint->detail);
748 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
749 detail1 = g_value_get_int (¶m_values[1]);
751 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
752 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
756 /*---------------------------------------------------------------------------*/
759 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
760 * converts it to the AT-SPI signal - 'object:text-changed'
764 text_changed_event_listener (GSignalInvocationHint * signal_hint,
765 guint n_param_values,
766 const GValue * param_values, gpointer data)
768 AtkObject *accessible;
769 GSignalQuery signal_query;
770 const gchar *name, *minor;
772 gint detail1, detail2;
774 g_signal_query (signal_hint->signal_id, &signal_query);
775 name = signal_query.signal_name;
777 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
778 minor = g_quark_to_string (signal_hint->detail);
780 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
781 detail1 = g_value_get_int (¶m_values[1]);
783 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
784 detail2 = g_value_get_int (¶m_values[2]);
787 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
789 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
790 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
794 /*---------------------------------------------------------------------------*/
797 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
798 * converts it to the AT-SPI signal - 'object:text-selection-changed'
802 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
803 guint n_param_values,
804 const GValue * param_values,
807 AtkObject *accessible;
808 GSignalQuery signal_query;
809 const gchar *name, *minor;
810 gint detail1, detail2;
812 g_signal_query (signal_hint->signal_id, &signal_query);
813 name = signal_query.signal_name;
815 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
816 minor = g_quark_to_string (signal_hint->detail);
818 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
819 detail1 = g_value_get_int (¶m_values[1]);
821 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
822 detail2 = g_value_get_int (¶m_values[2]);
824 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
825 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
829 /*---------------------------------------------------------------------------*/
832 * Children changed signal converter and forwarder.
834 * Klass (Interface) org.a11y.atspi.Event.Object
835 * Major is the signal name.
836 * Minor is 'add' or 'remove'
837 * detail1 is the index.
839 * any_data is the child reference.
842 children_changed_event_listener (GSignalInvocationHint * signal_hint,
843 guint n_param_values,
844 const GValue * param_values, gpointer data)
846 GSignalQuery signal_query;
847 const gchar *name, *minor;
848 gint detail1, detail2 = 0;
850 AtkObject *accessible, *ao=NULL;
853 g_signal_query (signal_hint->signal_id, &signal_query);
854 name = signal_query.signal_name;
856 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
857 minor = g_quark_to_string (signal_hint->detail);
859 detail1 = g_value_get_uint (param_values + 1);
860 child = g_value_get_pointer (param_values + 2);
862 if (ATK_IS_OBJECT (child))
864 ao = ATK_OBJECT (child);
865 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
866 "(so)", ao, append_object);
868 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
870 ao = atk_object_ref_accessible_child (accessible,
872 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
873 "(so)", ao, append_object);
877 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
878 "(so)", ao, append_object);
884 /*---------------------------------------------------------------------------*/
887 toplevel_added_event_listener (AtkObject * accessible,
888 guint index, AtkObject * child)
890 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
891 "(so)", child, append_object);
895 toplevel_removed_event_listener (AtkObject * accessible,
896 guint index, AtkObject * child)
898 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
899 "(so)", child, append_object);
902 /*---------------------------------------------------------------------------*/
905 * Generic signal converter and forwarder.
907 * Klass (Interface) org.a11y.atspi.Event.Object
908 * Major is the signal name.
915 generic_event_listener (GSignalInvocationHint * signal_hint,
916 guint n_param_values,
917 const GValue * param_values, gpointer data)
919 AtkObject *accessible;
920 GSignalQuery signal_query;
922 int detail1 = 0, detail2 = 0;
924 g_signal_query (signal_hint->signal_id, &signal_query);
925 name = signal_query.signal_name;
927 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
929 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
930 detail1 = g_value_get_int (¶m_values[1]);
932 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
933 detail2 = g_value_get_int (¶m_values[2]);
935 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
936 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
940 /*---------------------------------------------------------------------------*/
943 * Registers the provided function as a handler for the given signal name
944 * and stores the signal id returned so that the function may be
945 * de-registered later.
948 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
952 id = atk_add_global_event_listener (listener, signal_name);
953 g_array_append_val (listener_ids, id);
957 * Initialization for the signal handlers.
959 * Registers all required signal handlers.
962 spi_atk_register_event_listeners (void)
965 * Kludge to make sure the Atk interface types are registered, otherwise
966 * the AtkText signal handlers below won't get registered
968 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
969 AtkObject *bo = atk_no_op_object_new (ao);
971 g_object_unref (G_OBJECT (bo));
974 /* Register for focus event notifications, and register app with central registry */
975 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
977 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
979 add_signal_listener (property_event_listener,
980 "Gtk:AtkObject:property-change");
981 add_signal_listener (window_event_listener, "window:create");
982 add_signal_listener (window_event_listener, "window:destroy");
983 add_signal_listener (window_event_listener, "window:minimize");
984 add_signal_listener (window_event_listener, "window:maximize");
985 add_signal_listener (window_event_listener, "window:restore");
986 add_signal_listener (window_event_listener, "window:activate");
987 add_signal_listener (window_event_listener, "window:deactivate");
988 add_signal_listener (document_event_listener,
989 "Gtk:AtkDocument:load-complete");
990 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
991 add_signal_listener (document_event_listener,
992 "Gtk:AtkDocument:load-stopped");
993 /* TODO Fake this event on the client side */
994 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
996 add_signal_listener (active_descendant_event_listener,
997 "Gtk:AtkObject:active-descendant-changed");
998 add_signal_listener (bounds_event_listener,
999 "Gtk:AtkComponent:bounds-changed");
1000 add_signal_listener (text_selection_changed_event_listener,
1001 "Gtk:AtkText:text-selection-changed");
1002 add_signal_listener (text_changed_event_listener,
1003 "Gtk:AtkText:text-changed");
1004 add_signal_listener (link_selected_event_listener,
1005 "Gtk:AtkHypertext:link-selected");
1006 add_signal_listener (generic_event_listener,
1007 "Gtk:AtkObject:visible-data-changed");
1008 add_signal_listener (generic_event_listener,
1009 "Gtk:AtkSelection:selection-changed");
1010 add_signal_listener (generic_event_listener,
1011 "Gtk:AtkText:text-attributes-changed");
1012 add_signal_listener (generic_event_listener,
1013 "Gtk:AtkText:text-caret-moved");
1014 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1015 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1016 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1017 add_signal_listener (generic_event_listener,
1018 "Gtk:AtkTable:column-inserted");
1019 add_signal_listener (generic_event_listener,
1020 "Gtk:AtkTable:column-reordered");
1021 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1022 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1024 /* Children signal listeners */
1025 atk_add_global_event_listener (children_changed_event_listener,
1026 "Gtk:AtkObject:children-changed");
1029 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1030 "children-changed::add",
1031 (GCallback) toplevel_added_event_listener, NULL);
1033 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1034 "children-changed::remove",
1035 (GCallback) toplevel_removed_event_listener, NULL);
1039 * May add the following listeners to implement preemptive key listening for GTK+
1041 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1042 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1044 atk_bridge_key_event_listener_id =
1045 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1048 /*---------------------------------------------------------------------------*/
1051 * De-registers all ATK signal handlers.
1054 spi_atk_deregister_event_listeners (void)
1057 GArray *ids = listener_ids;
1058 listener_ids = NULL;
1060 if (atk_bridge_focus_tracker_id)
1061 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1063 for (i = 0; ids && i < ids->len; i++)
1065 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1068 if (atk_bridge_key_event_listener_id)
1069 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1072 /*---------------------------------------------------------------------------*/
1075 * TODO This function seems out of place here.
1077 * Emits fake deactivate signals on all top-level windows.
1078 * Used when shutting down AT-SPI, ensuring that all
1079 * windows have been removed on the client side.
1082 spi_atk_tidy_windows (void)
1088 root = atk_get_root ();
1089 n_children = atk_object_get_n_accessible_children (root);
1090 for (i = 0; i < n_children; i++)
1093 AtkStateSet *stateset;
1096 child = atk_object_ref_accessible_child (root, i);
1097 stateset = atk_object_ref_state_set (child);
1099 name = atk_object_get_name (child);
1100 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1102 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1103 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1105 g_object_unref (stateset);
1107 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1108 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1109 g_object_unref (child);
1114 spi_event_is_subtype (gchar **needle, gchar **haystack)
1116 while (*haystack && **haystack)
1118 if (g_strcmp0 (*needle, *haystack))
1126 /*END------------------------------------------------------------------------*/