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 set_reply (DBusPendingCall * pending, void *user_data)
58 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
60 closure->reply = dbus_pending_call_steal_reply (pending);
61 g_main_loop_quit (closure->loop);
65 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
67 DBusPendingCall *pending;
68 SpiReentrantCallClosure closure;
70 if (!dbus_connection_send_with_reply (bus, message, &pending, -1))
72 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
73 closure.loop = g_main_loop_new (NULL, FALSE);
75 /* TODO: Remove old AT_SPI_CLIENT name */
76 if (getenv ("AT_SPI_CLIENT") || getenv ("AT_SPI_REENTER_G_MAIN_LOOP"))
78 g_main_loop_run (closure.loop);
83 while (!closure.reply)
85 if (!dbus_connection_read_write_dispatch (spi_global_app_data->bus, 1000))
90 g_main_loop_unref (closure.loop);
94 /*---------------------------------------------------------------------------*/
97 * Functionality related to sending device events from the application.
99 * This is used for forwarding key events on to the registry daemon.
103 Accessibility_DeviceEventController_NotifyListenersSync (const
104 Accessibility_DeviceEvent
107 DBusMessage *message;
109 dbus_bool_t consumed = FALSE;
112 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
114 SPI_DBUS_INTERFACE_DEC,
115 "NotifyListenersSync");
117 dbus_error_init (&error);
118 if (spi_dbus_marshal_deviceEvent (message, key_event))
121 send_and_allow_reentry (spi_global_app_data->bus, message);
125 dbus_error_init (&error);
126 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
128 dbus_message_unref (reply);
131 dbus_message_unref (message);
136 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
137 AtkKeyEventStruct * event)
139 keystroke->id = (dbus_int32_t) event->keyval;
140 keystroke->hw_code = (dbus_int16_t) event->keycode;
141 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
142 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
147 keystroke->event_string = g_strdup (event->string);
148 c = g_utf8_get_char_validated (event->string, -1);
149 if (c > 0 && g_unichar_isprint (c))
150 keystroke->is_text = TRUE;
152 keystroke->is_text = FALSE;
156 keystroke->event_string = g_strdup ("");
157 keystroke->is_text = FALSE;
161 case (ATK_KEY_EVENT_PRESS):
162 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
164 case (ATK_KEY_EVENT_RELEASE):
165 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
173 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
174 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
175 (int) keystroke->modifiers, keystroke->event_string,
176 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
182 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
185 Accessibility_DeviceEvent key_event;
187 spi_init_keystroke_from_atk_key_event (&key_event, event);
190 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
192 if (key_event.event_string)
193 g_free (key_event.event_string);
198 /*---------------------------------------------------------------------------*/
201 convert_signal_name (const gchar * s)
203 gchar *ret = g_strdup (s);
208 ret[0] = toupper (ret[0]);
209 while ((t = strchr (ret, '-')) != NULL)
211 memmove (t, t + 1, strlen (t));
218 replace_null (const gint type,
223 case DBUS_TYPE_STRING:
224 case DBUS_TYPE_OBJECT_PATH:
235 append_basic (DBusMessageIter *iter,
241 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
243 val = replace_null ((int) *type, val);
244 dbus_message_iter_append_basic(&sub, (int) *type, &val);
246 dbus_message_iter_close_container(iter, &sub);
250 append_rect (DBusMessageIter *iter,
254 DBusMessageIter variant, sub;
255 const AtkRectangle *rect = (const AtkRectangle *) val;
257 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
259 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
261 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
262 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
263 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
264 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
266 dbus_message_iter_close_container (&variant, &sub);
268 dbus_message_iter_close_container(iter, &variant);
272 append_object (DBusMessageIter *iter,
276 spi_object_append_v_reference (iter, ATK_OBJECT (val));
280 signal_name_to_dbus (const gchar *s)
282 gchar *ret = g_strdup (s);
287 ret [0] = toupper (ret [0]);
288 while ((t = strchr (ret, '-')) != NULL)
290 memmove (t, t + 1, strlen (t));
297 * Converts names of the form "active-descendant-changed" to
298 * "ActiveDescendantChanged"
301 ensure_proper_format (const char *name)
303 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
305 gboolean need_upper = TRUE;
313 *p++ = toupper (*name);
316 else if (*name == '-')
318 else if (*name == ':')
332 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
337 gboolean ret = FALSE;
340 data [0] = ensure_proper_format (klass + 21);
341 data [1] = ensure_proper_format (major);
342 data [2] = ensure_proper_format (minor);
345 /* Hack: events such as "object::text-changed::insert:system" as
346 generated by Gecko */
347 data [2][strcspn (data [2], ":")] = '\0';
348 for (list = spi_global_app_data->events; list; list = list->next)
351 if (spi_event_is_subtype (data, evdata->data))
365 * Emits an AT-SPI event.
366 * AT-SPI events names are split into three parts:
368 * This is mapped onto D-Bus events as:
369 * D-Bus Interface:Signal Name:Detail argument
371 * Marshals a basic type into the 'any_data' attribute of
375 emit_event (AtkObject *obj,
379 dbus_int32_t detail1,
380 dbus_int32_t detail2,
383 void (*append_variant) (DBusMessageIter *, const char *, const void *))
385 DBusConnection *bus = spi_global_app_data->bus;
386 const char *path = spi_register_object_to_path (spi_global_register,
391 DBusMessageIter iter, iter_struct;
393 if (!klass) klass = "";
394 if (!major) major = "";
395 if (!minor) minor = "";
396 if (!type) type = "u";
398 if (!signal_is_needed (klass, major, minor))
402 * This is very annoying, but as '-' isn't a legal signal
403 * name in D-Bus (Why not??!?) The names need converting
404 * on this side, and again on the client side.
406 cname = signal_name_to_dbus (major);
407 sig = dbus_message_new_signal(path, klass, cname);
410 dbus_message_iter_init_append(sig, &iter);
412 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
413 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
414 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
415 append_variant (&iter, type, val);
416 spi_object_append_reference (&iter, spi_global_app_data->root);
418 dbus_connection_send(bus, sig, NULL);
419 dbus_message_unref(sig);
421 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
422 spi_object_lease_if_needed (G_OBJECT (obj));
425 /*---------------------------------------------------------------------------*/
428 * The focus listener handles the ATK 'focus' signal and forwards it
429 * as the AT-SPI event, 'focus:'
432 focus_tracker (AtkObject * accessible)
434 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
435 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
438 /*---------------------------------------------------------------------------*/
440 #define PCHANGE "PropertyChange"
443 * This handler handles the following ATK signals and
444 * converts them to AT-SPI events:
446 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
448 * The property-name is part of the ATK property-change signal.
451 property_event_listener (GSignalInvocationHint * signal_hint,
452 guint n_param_values,
453 const GValue * param_values, gpointer data)
455 AtkObject *accessible;
456 AtkPropertyValues *values;
458 const gchar *pname = NULL;
464 accessible = g_value_get_object (¶m_values[0]);
465 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
467 pname = values[0].property_name;
469 /* TODO Could improve this control statement by matching
470 * on only the end of the signal names,
472 if (strcmp (pname, "accessible-name") == 0)
474 s1 = atk_object_get_name (accessible);
476 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
477 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
479 else if (strcmp (pname, "accessible-description") == 0)
481 s1 = atk_object_get_description (accessible);
483 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
484 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
486 else if (strcmp (pname, "accessible-parent") == 0)
488 otemp = atk_object_get_parent (accessible);
490 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
491 "(so)", otemp, append_object);
493 else if (strcmp (pname, "accessible-role") == 0)
495 i = atk_object_get_role (accessible);
496 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
497 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
499 else if (strcmp (pname, "accessible-table-summary") == 0)
501 otemp = atk_table_get_summary (ATK_TABLE (accessible));
503 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
504 "(so)", otemp, append_object);
506 else if (strcmp (pname, "accessible-table-column-header") == 0)
508 i = g_value_get_int (&(values->new_value));
509 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
511 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
512 "(so)", otemp, append_object);
514 else if (strcmp (pname, "accessible-table-row-header") == 0)
516 i = g_value_get_int (&(values->new_value));
517 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
519 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
520 "(so)", otemp, append_object);
522 else if (strcmp (pname, "accessible-table-row-description") == 0)
524 i = g_value_get_int (&(values->new_value));
525 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
526 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
527 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
529 else if (strcmp (pname, "accessible-table-column-description") == 0)
531 i = g_value_get_int (&(values->new_value));
532 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
533 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
534 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
536 else if (strcmp (pname, "accessible-table-caption-object") == 0)
538 otemp = atk_table_get_caption (ATK_TABLE (accessible));
539 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
540 "(so)", otemp, append_object);
544 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
545 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
550 /*---------------------------------------------------------------------------*/
552 #define STATE_CHANGED "state-changed"
555 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
556 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
557 * the param-name is part of the ATK state-change signal.
560 state_event_listener (GSignalInvocationHint * signal_hint,
561 guint n_param_values,
562 const GValue * param_values, gpointer data)
564 AtkObject *accessible;
568 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
569 pname = g_strdup (g_value_get_string (¶m_values[1]));
571 /* TODO - Possibly ignore a change to the 'defunct' state.
572 * This is because without reference counting defunct objects should be removed.
574 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
575 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
576 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
581 /*---------------------------------------------------------------------------*/
584 * The window event listener handles the following ATK signals and forwards
585 * them as AT-SPI events:
587 * window:create -> window:create
588 * window:destroy -> window:destroy
589 * window:minimize -> window:minimize
590 * window:maximize -> window:maximize
591 * window:activate -> window:activate
592 * window:deactivate -> window:deactivate
595 window_event_listener (GSignalInvocationHint * signal_hint,
596 guint n_param_values,
597 const GValue * param_values, gpointer data)
599 AtkObject *accessible;
600 GSignalQuery signal_query;
601 const gchar *name, *s;
603 g_signal_query (signal_hint->signal_id, &signal_query);
604 name = signal_query.signal_name;
606 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
607 s = atk_object_get_name (accessible);
608 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
609 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
614 /*---------------------------------------------------------------------------*/
617 * The document event listener handles the following ATK signals
618 * and converts them to AT-SPI events:
620 * Gtk:AtkDocument:load-complete -> document:load-complete
621 * Gtk:AtkDocument:load-stopped -> document:load-stopped
622 * Gtk:AtkDocument:reload -> document:reload
625 document_event_listener (GSignalInvocationHint * signal_hint,
626 guint n_param_values,
627 const GValue * param_values, gpointer data)
629 AtkObject *accessible;
630 GSignalQuery signal_query;
631 const gchar *name, *s;
633 g_signal_query (signal_hint->signal_id, &signal_query);
634 name = signal_query.signal_name;
636 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
637 s = atk_object_get_name (accessible);
638 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
639 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
644 /*---------------------------------------------------------------------------*/
647 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
648 * this to an AT-SPI event - "object:bounds-changed".
651 bounds_event_listener (GSignalInvocationHint * signal_hint,
652 guint n_param_values,
653 const GValue * param_values, gpointer data)
655 AtkObject *accessible;
656 AtkRectangle *atk_rect;
657 GSignalQuery signal_query;
658 const gchar *name, *s;
660 g_signal_query (signal_hint->signal_id, &signal_query);
661 name = signal_query.signal_name;
663 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
665 if (G_VALUE_HOLDS_BOXED (param_values + 1))
667 atk_rect = g_value_get_boxed (param_values + 1);
669 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
670 "(iiii)", atk_rect, append_rect);
675 /*---------------------------------------------------------------------------*/
678 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
679 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
683 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
684 guint n_param_values,
685 const GValue * param_values, gpointer data)
687 AtkObject *accessible;
689 GSignalQuery signal_query;
690 const gchar *name, *minor;
693 g_signal_query (signal_hint->signal_id, &signal_query);
694 name = signal_query.signal_name;
696 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
697 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
698 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
699 minor = g_quark_to_string (signal_hint->detail);
701 detail1 = atk_object_get_index_in_parent (child);
703 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
704 "(so)", child, append_object);
708 /*---------------------------------------------------------------------------*/
711 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
712 * converts it to the AT-SPI signal - 'object:link-selected'
716 link_selected_event_listener (GSignalInvocationHint * signal_hint,
717 guint n_param_values,
718 const GValue * param_values, gpointer data)
720 AtkObject *accessible;
721 GSignalQuery signal_query;
722 const gchar *name, *minor;
725 g_signal_query (signal_hint->signal_id, &signal_query);
726 name = signal_query.signal_name;
728 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
729 minor = g_quark_to_string (signal_hint->detail);
731 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
732 detail1 = g_value_get_int (¶m_values[1]);
734 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
735 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
739 /*---------------------------------------------------------------------------*/
742 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
743 * converts it to the AT-SPI signal - 'object:text-changed'
747 text_changed_event_listener (GSignalInvocationHint * signal_hint,
748 guint n_param_values,
749 const GValue * param_values, gpointer data)
751 AtkObject *accessible;
752 GSignalQuery signal_query;
753 const gchar *name, *minor;
755 gint detail1, detail2;
757 g_signal_query (signal_hint->signal_id, &signal_query);
758 name = signal_query.signal_name;
760 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
761 minor = g_quark_to_string (signal_hint->detail);
763 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
764 detail1 = g_value_get_int (¶m_values[1]);
766 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
767 detail2 = g_value_get_int (¶m_values[2]);
770 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
772 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
773 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
777 /*---------------------------------------------------------------------------*/
780 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
781 * converts it to the AT-SPI signal - 'object:text-selection-changed'
785 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
786 guint n_param_values,
787 const GValue * param_values,
790 AtkObject *accessible;
791 GSignalQuery signal_query;
792 const gchar *name, *minor;
793 gint detail1, detail2;
795 g_signal_query (signal_hint->signal_id, &signal_query);
796 name = signal_query.signal_name;
798 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
799 minor = g_quark_to_string (signal_hint->detail);
801 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
802 detail1 = g_value_get_int (¶m_values[1]);
804 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
805 detail2 = g_value_get_int (¶m_values[2]);
807 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
808 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
812 /*---------------------------------------------------------------------------*/
815 * Children changed signal converter and forwarder.
817 * Klass (Interface) org.a11y.atspi.Event.Object
818 * Major is the signal name.
819 * Minor is 'add' or 'remove'
820 * detail1 is the index.
822 * any_data is the child reference.
825 children_changed_event_listener (GSignalInvocationHint * signal_hint,
826 guint n_param_values,
827 const GValue * param_values, gpointer data)
829 GSignalQuery signal_query;
830 const gchar *name, *minor;
831 gint detail1, detail2 = 0;
833 AtkObject *accessible, *ao=NULL;
836 g_signal_query (signal_hint->signal_id, &signal_query);
837 name = signal_query.signal_name;
839 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
840 minor = g_quark_to_string (signal_hint->detail);
842 detail1 = g_value_get_uint (param_values + 1);
843 child = g_value_get_pointer (param_values + 2);
845 if (ATK_IS_OBJECT (child))
847 ao = ATK_OBJECT (child);
848 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
849 "(so)", ao, append_object);
851 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
853 ao = atk_object_ref_accessible_child (accessible,
855 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
856 "(so)", ao, append_object);
860 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
861 "(so)", ao, append_object);
867 /*---------------------------------------------------------------------------*/
870 toplevel_added_event_listener (AtkObject * accessible,
871 guint index, AtkObject * child)
873 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
874 "(so)", child, append_object);
878 toplevel_removed_event_listener (AtkObject * accessible,
879 guint index, AtkObject * child)
881 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
882 "(so)", child, append_object);
885 /*---------------------------------------------------------------------------*/
888 * Generic signal converter and forwarder.
890 * Klass (Interface) org.a11y.atspi.Event.Object
891 * Major is the signal name.
898 generic_event_listener (GSignalInvocationHint * signal_hint,
899 guint n_param_values,
900 const GValue * param_values, gpointer data)
902 AtkObject *accessible;
903 GSignalQuery signal_query;
905 int detail1 = 0, detail2 = 0;
907 g_signal_query (signal_hint->signal_id, &signal_query);
908 name = signal_query.signal_name;
910 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
912 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
913 detail1 = g_value_get_int (¶m_values[1]);
915 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
916 detail2 = g_value_get_int (¶m_values[2]);
918 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
919 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
923 /*---------------------------------------------------------------------------*/
926 * Registers the provided function as a handler for the given signal name
927 * and stores the signal id returned so that the function may be
928 * de-registered later.
931 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
935 id = atk_add_global_event_listener (listener, signal_name);
936 g_array_append_val (listener_ids, id);
940 * Initialization for the signal handlers.
942 * Registers all required signal handlers.
945 spi_atk_register_event_listeners (void)
948 * Kludge to make sure the Atk interface types are registered, otherwise
949 * the AtkText signal handlers below won't get registered
951 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
952 AtkObject *bo = atk_no_op_object_new (ao);
954 g_object_unref (G_OBJECT (bo));
957 /* Register for focus event notifications, and register app with central registry */
958 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
960 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
962 add_signal_listener (property_event_listener,
963 "Gtk:AtkObject:property-change");
964 add_signal_listener (window_event_listener, "window:create");
965 add_signal_listener (window_event_listener, "window:destroy");
966 add_signal_listener (window_event_listener, "window:minimize");
967 add_signal_listener (window_event_listener, "window:maximize");
968 add_signal_listener (window_event_listener, "window:restore");
969 add_signal_listener (window_event_listener, "window:activate");
970 add_signal_listener (window_event_listener, "window:deactivate");
971 add_signal_listener (document_event_listener,
972 "Gtk:AtkDocument:load-complete");
973 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
974 add_signal_listener (document_event_listener,
975 "Gtk:AtkDocument:load-stopped");
976 /* TODO Fake this event on the client side */
977 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
979 add_signal_listener (active_descendant_event_listener,
980 "Gtk:AtkObject:active-descendant-changed");
981 add_signal_listener (bounds_event_listener,
982 "Gtk:AtkComponent:bounds-changed");
983 add_signal_listener (text_selection_changed_event_listener,
984 "Gtk:AtkText:text-selection-changed");
985 add_signal_listener (text_changed_event_listener,
986 "Gtk:AtkText:text-changed");
987 add_signal_listener (link_selected_event_listener,
988 "Gtk:AtkHypertext:link-selected");
989 add_signal_listener (generic_event_listener,
990 "Gtk:AtkObject:visible-data-changed");
991 add_signal_listener (generic_event_listener,
992 "Gtk:AtkSelection:selection-changed");
993 add_signal_listener (generic_event_listener,
994 "Gtk:AtkText:text-attributes-changed");
995 add_signal_listener (generic_event_listener,
996 "Gtk:AtkText:text-caret-moved");
997 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
998 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
999 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1000 add_signal_listener (generic_event_listener,
1001 "Gtk:AtkTable:column-inserted");
1002 add_signal_listener (generic_event_listener,
1003 "Gtk:AtkTable:column-reordered");
1004 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1005 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1007 /* Children signal listeners */
1008 atk_add_global_event_listener (children_changed_event_listener,
1009 "Gtk:AtkObject:children-changed");
1012 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1013 "children-changed::add",
1014 (GCallback) toplevel_added_event_listener, NULL);
1016 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1017 "children-changed::remove",
1018 (GCallback) toplevel_removed_event_listener, NULL);
1022 * May add the following listeners to implement preemptive key listening for GTK+
1024 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1025 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1027 atk_bridge_key_event_listener_id =
1028 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1031 /*---------------------------------------------------------------------------*/
1034 * De-registers all ATK signal handlers.
1037 spi_atk_deregister_event_listeners (void)
1040 GArray *ids = listener_ids;
1041 listener_ids = NULL;
1043 if (atk_bridge_focus_tracker_id)
1044 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1046 for (i = 0; ids && i < ids->len; i++)
1048 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1051 if (atk_bridge_key_event_listener_id)
1052 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1055 /*---------------------------------------------------------------------------*/
1058 * TODO This function seems out of place here.
1060 * Emits fake deactivate signals on all top-level windows.
1061 * Used when shutting down AT-SPI, ensuring that all
1062 * windows have been removed on the client side.
1065 spi_atk_tidy_windows (void)
1071 root = atk_get_root ();
1072 n_children = atk_object_get_n_accessible_children (root);
1073 for (i = 0; i < n_children; i++)
1076 AtkStateSet *stateset;
1079 child = atk_object_ref_accessible_child (root, i);
1080 stateset = atk_object_ref_state_set (child);
1082 name = atk_object_get_name (child);
1083 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1085 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1086 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1088 g_object_unref (stateset);
1090 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1091 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1092 g_object_unref (child);
1097 spi_event_is_subtype (gchar **needle, gchar **haystack)
1099 while (*haystack && **haystack)
1101 if (g_strcmp0 (*needle, *haystack))
1109 /*END------------------------------------------------------------------------*/