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.freedesktop.atspi.Event.Object"
43 #define ITF_EVENT_WINDOW "org.freedesktop.atspi.Event.Window"
44 #define ITF_EVENT_DOCUMENT "org.freedesktop.atspi.Event.Document"
45 #define ITF_EVENT_FOCUS "org.freedesktop.atspi.Event.Focus"
47 /*---------------------------------------------------------------------------*/
50 set_reply (DBusPendingCall * pending, void *user_data)
52 void **replyptr = (void **) user_data;
54 *replyptr = dbus_pending_call_steal_reply (pending);
58 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
60 DBusPendingCall *pending;
61 DBusMessage *reply = NULL;
63 if (!dbus_connection_send_with_reply (bus, message, &pending, -1))
67 dbus_pending_call_set_notify (pending, set_reply, (void *) &reply, NULL);
70 if (!dbus_connection_read_write_dispatch (bus, -1))
76 /*---------------------------------------------------------------------------*/
79 * Functionality related to sending device events from the application.
81 * This is used for forwarding key events on to the registry daemon.
85 Accessibility_DeviceEventController_NotifyListenersSync (const
86 Accessibility_DeviceEvent
91 dbus_bool_t consumed = FALSE;
94 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
96 SPI_DBUS_INTERFACE_DEC,
97 "NotifyListenersSync");
99 dbus_error_init (&error);
100 if (spi_dbus_marshal_deviceEvent (message, key_event))
103 send_and_allow_reentry (spi_global_app_data->bus, message);
107 dbus_error_init (&error);
108 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
110 dbus_message_unref (reply);
113 dbus_message_unref (message);
118 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
119 AtkKeyEventStruct * event)
121 keystroke->id = (dbus_int32_t) event->keyval;
122 keystroke->hw_code = (dbus_int16_t) event->keycode;
123 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
124 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
129 keystroke->event_string = g_strdup (event->string);
130 c = g_utf8_get_char_validated (event->string, -1);
131 if (c > 0 && g_unichar_isprint (c))
132 keystroke->is_text = TRUE;
134 keystroke->is_text = FALSE;
138 keystroke->event_string = g_strdup ("");
139 keystroke->is_text = FALSE;
143 case (ATK_KEY_EVENT_PRESS):
144 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
146 case (ATK_KEY_EVENT_RELEASE):
147 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
155 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
156 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
157 (int) keystroke->modifiers, keystroke->event_string,
158 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
164 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
167 Accessibility_DeviceEvent key_event;
169 spi_init_keystroke_from_atk_key_event (&key_event, event);
172 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
174 if (key_event.event_string)
175 g_free (key_event.event_string);
180 /*---------------------------------------------------------------------------*/
183 convert_signal_name (const gchar * s)
185 gchar *ret = g_strdup (s);
190 ret[0] = toupper (ret[0]);
191 while ((t = strchr (ret, '-')) != NULL)
193 memmove (t, t + 1, strlen (t));
200 replace_null (const gint type,
205 case DBUS_TYPE_STRING:
206 case DBUS_TYPE_OBJECT_PATH:
217 append_basic (DBusMessageIter *iter,
223 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
225 val = replace_null ((int) *type, val);
226 dbus_message_iter_append_basic(&sub, (int) *type, &val);
228 dbus_message_iter_close_container(iter, &sub);
232 append_rect (DBusMessageIter *iter,
236 DBusMessageIter variant, sub;
237 const AtkRectangle *rect = (const AtkRectangle *) val;
239 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
241 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
243 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
244 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
245 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
246 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
248 dbus_message_iter_close_container (&variant, &sub);
250 dbus_message_iter_close_container(iter, &variant);
254 append_object (DBusMessageIter *iter,
258 spi_object_append_v_reference (iter, ATK_OBJECT (val));
262 signal_name_to_dbus (const gchar *s)
264 gchar *ret = g_strdup (s);
269 ret [0] = toupper (ret [0]);
270 while ((t = strchr (ret, '-')) != NULL)
272 memmove (t, t + 1, strlen (t));
279 * Emits an AT-SPI event.
280 * AT-SPI events names are split into three parts:
282 * This is mapped onto D-Bus events as:
283 * D-Bus Interface:Signal Name:Detail argument
285 * Marshals a basic type into the 'any_data' attribute of
289 emit_event (AtkObject *obj,
293 dbus_int32_t detail1,
294 dbus_int32_t detail2,
297 void (*append_variant) (DBusMessageIter *, const char *, const void *))
299 DBusConnection *bus = spi_global_app_data->bus;
300 const char *path = spi_register_object_to_path (spi_global_register,
305 DBusMessageIter iter, iter_struct;
307 if (!klass) klass = "";
308 if (!major) major = "";
309 if (!minor) minor = "";
310 if (!type) type = "u";
313 * This is very annoying, but as '-' isn't a legal signal
314 * name in D-Bus (Why not??!?) The names need converting
315 * on this side, and again on the client side.
317 cname = signal_name_to_dbus (major);
318 sig = dbus_message_new_signal(path, klass, cname);
321 dbus_message_iter_init_append(sig, &iter);
323 spi_object_append_reference (&iter, spi_global_app_data->root);
324 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
325 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
326 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
328 append_variant (&iter, type, val);
330 dbus_connection_send(bus, sig, NULL);
331 dbus_message_unref(sig);
334 /*---------------------------------------------------------------------------*/
337 * The focus listener handles the ATK 'focus' signal and forwards it
338 * as the AT-SPI event, 'focus:'
341 focus_tracker (AtkObject * accessible)
343 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
344 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
347 /*---------------------------------------------------------------------------*/
349 #define PCHANGE "property_change"
352 * This handler handles the following ATK signals and
353 * converts them to AT-SPI events:
355 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
357 * The property-name is part of the ATK property-change signal.
360 property_event_listener (GSignalInvocationHint * signal_hint,
361 guint n_param_values,
362 const GValue * param_values, gpointer data)
364 AtkObject *accessible;
365 AtkPropertyValues *values;
367 const gchar *pname = NULL;
373 accessible = g_value_get_object (¶m_values[0]);
374 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
376 pname = values[0].property_name;
378 /* TODO Could improve this control statement by matching
379 * on only the end of the signal names,
381 if (strcmp (pname, "accessible-name") == 0)
383 s1 = atk_object_get_name (accessible);
385 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
386 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
388 if (strcmp (pname, "accessible-description") == 0)
390 s1 = atk_object_get_description (accessible);
392 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
393 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
395 if (strcmp (pname, "accessible-parent") == 0)
397 otemp = atk_object_get_parent (accessible);
399 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
400 "(so)", otemp, append_object);
402 if (strcmp (pname, "accessible-table-summary") == 0)
404 otemp = atk_table_get_summary (ATK_TABLE (accessible));
406 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
407 "(so)", otemp, append_object);
409 else if (strcmp (pname, "accessible-table-column-header") == 0)
411 i = g_value_get_int (&(values->new_value));
412 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
414 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
415 "(so)", otemp, append_object);
417 else if (strcmp (pname, "accessible-table-row-header") == 0)
419 i = g_value_get_int (&(values->new_value));
420 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
422 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
423 "(so)", otemp, append_object);
425 else if (strcmp (pname, "accessible-table-row-description") == 0)
427 i = g_value_get_int (&(values->new_value));
428 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
429 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
430 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
432 else if (strcmp (pname, "accessible-table-column-description") == 0)
434 i = g_value_get_int (&(values->new_value));
435 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
436 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
437 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
439 else if (strcmp (pname, "accessible-table-caption-object") == 0)
441 otemp = atk_table_get_caption (ATK_TABLE (accessible));
442 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
443 "(so)", otemp, append_object);
447 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
448 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
453 /*---------------------------------------------------------------------------*/
455 #define STATE_CHANGED "state-changed"
458 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
459 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
460 * the param-name is part of the ATK state-change signal.
463 state_event_listener (GSignalInvocationHint * signal_hint,
464 guint n_param_values,
465 const GValue * param_values, gpointer data)
467 AtkObject *accessible;
471 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
472 pname = g_strdup (g_value_get_string (¶m_values[1]));
474 /* TODO - Possibly ignore a change to the 'defunct' state.
475 * This is because without reference counting defunct objects should be removed.
477 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
478 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
479 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
484 /*---------------------------------------------------------------------------*/
487 * The window event listener handles the following ATK signals and forwards
488 * them as AT-SPI events:
490 * window:create -> window:create
491 * window:destroy -> window:destroy
492 * window:minimize -> window:minimize
493 * window:maximize -> window:maximize
494 * window:activate -> window:activate
495 * window:deactivate -> window:deactivate
498 window_event_listener (GSignalInvocationHint * signal_hint,
499 guint n_param_values,
500 const GValue * param_values, gpointer data)
502 AtkObject *accessible;
503 GSignalQuery signal_query;
504 const gchar *name, *s;
506 g_signal_query (signal_hint->signal_id, &signal_query);
507 name = signal_query.signal_name;
509 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
510 s = atk_object_get_name (accessible);
511 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
512 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
517 /*---------------------------------------------------------------------------*/
520 * The document event listener handles the following ATK signals
521 * and converts them to AT-SPI events:
523 * Gtk:AtkDocument:load-complete -> document:load-complete
524 * Gtk:AtkDocument:load-stopped -> document:load-stopped
525 * Gtk:AtkDocument:reload -> document:reload
528 document_event_listener (GSignalInvocationHint * signal_hint,
529 guint n_param_values,
530 const GValue * param_values, gpointer data)
532 AtkObject *accessible;
533 GSignalQuery signal_query;
534 const gchar *name, *s;
536 g_signal_query (signal_hint->signal_id, &signal_query);
537 name = signal_query.signal_name;
539 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
540 s = atk_object_get_name (accessible);
541 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
542 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
547 /*---------------------------------------------------------------------------*/
550 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
551 * this to an AT-SPI event - "object:bounds-changed".
554 bounds_event_listener (GSignalInvocationHint * signal_hint,
555 guint n_param_values,
556 const GValue * param_values, gpointer data)
558 AtkObject *accessible;
559 AtkRectangle *atk_rect;
560 GSignalQuery signal_query;
561 const gchar *name, *s;
563 g_signal_query (signal_hint->signal_id, &signal_query);
564 name = signal_query.signal_name;
566 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
568 if (G_VALUE_HOLDS_BOXED (param_values + 1))
570 atk_rect = g_value_get_boxed (param_values + 1);
572 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
573 "(iiii)", atk_rect, append_rect);
578 /*---------------------------------------------------------------------------*/
581 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
582 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
586 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
587 guint n_param_values,
588 const GValue * param_values, gpointer data)
590 AtkObject *accessible;
592 GSignalQuery signal_query;
593 const gchar *name, *minor;
597 g_signal_query (signal_hint->signal_id, &signal_query);
598 name = signal_query.signal_name;
600 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
601 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
602 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
603 minor = g_quark_to_string (signal_hint->detail);
605 detail1 = atk_object_get_index_in_parent (child);
607 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
608 "(so)", child, append_object);
613 /*---------------------------------------------------------------------------*/
616 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
617 * converts it to the AT-SPI signal - 'object:link-selected'
621 link_selected_event_listener (GSignalInvocationHint * signal_hint,
622 guint n_param_values,
623 const GValue * param_values, gpointer data)
625 AtkObject *accessible;
626 GSignalQuery signal_query;
627 const gchar *name, *minor;
630 g_signal_query (signal_hint->signal_id, &signal_query);
631 name = signal_query.signal_name;
633 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
634 minor = g_quark_to_string (signal_hint->detail);
636 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
637 detail1 = g_value_get_int (¶m_values[1]);
639 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
640 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
644 /*---------------------------------------------------------------------------*/
647 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
648 * converts it to the AT-SPI signal - 'object:text-changed'
652 text_changed_event_listener (GSignalInvocationHint * signal_hint,
653 guint n_param_values,
654 const GValue * param_values, gpointer data)
656 AtkObject *accessible;
657 GSignalQuery signal_query;
658 const gchar *name, *minor;
660 gint detail1, detail2;
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 minor = g_quark_to_string (signal_hint->detail);
668 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
669 detail1 = g_value_get_int (¶m_values[1]);
671 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
672 detail2 = g_value_get_int (¶m_values[2]);
675 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
677 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
678 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
682 /*---------------------------------------------------------------------------*/
685 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
686 * converts it to the AT-SPI signal - 'object:text-selection-changed'
690 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
691 guint n_param_values,
692 const GValue * param_values,
695 AtkObject *accessible;
696 GSignalQuery signal_query;
697 const gchar *name, *minor;
698 gint detail1, detail2;
700 g_signal_query (signal_hint->signal_id, &signal_query);
701 name = signal_query.signal_name;
703 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
704 minor = g_quark_to_string (signal_hint->detail);
706 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
707 detail1 = g_value_get_int (¶m_values[1]);
709 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
710 detail2 = g_value_get_int (¶m_values[2]);
712 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
713 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
717 /*---------------------------------------------------------------------------*/
720 * Children changed signal converter and forwarder.
722 * Klass (Interface) org.freedesktop.atspi.Event.Object
723 * Major is the signal name.
724 * Minor is 'add' or 'remove'
725 * detail1 is the index.
727 * any_data is the child reference.
730 children_changed_event_listener (GSignalInvocationHint * signal_hint,
731 guint n_param_values,
732 const GValue * param_values, gpointer data)
734 GSignalQuery signal_query;
735 const gchar *name, *minor;
736 gint detail1, detail2 = 0;
738 AtkObject *accessible, *ao;
741 g_signal_query (signal_hint->signal_id, &signal_query);
742 name = signal_query.signal_name;
744 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
745 minor = g_quark_to_string (signal_hint->detail);
747 detail1 = g_value_get_uint (param_values + 1);
748 child = g_value_get_pointer (param_values + 2);
750 if (ATK_IS_OBJECT (child))
752 ao = ATK_OBJECT (child);
753 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
754 "(so)", ao, append_object);
756 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
758 ao = atk_object_ref_accessible_child (accessible,
760 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
761 "(so)", ao, append_object);
765 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
766 "(so)", ao, append_object);
772 /*---------------------------------------------------------------------------*/
775 toplevel_added_event_listener (AtkObject * accessible,
776 guint index, AtkObject * child)
778 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
779 "(so)", child, append_object);
783 toplevel_removed_event_listener (AtkObject * accessible,
784 guint index, AtkObject * child)
786 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
787 "(so)", child, append_object);
790 /*---------------------------------------------------------------------------*/
793 * Generic signal converter and forwarder.
795 * Klass (Interface) org.freedesktop.atspi.Event.Object
796 * Major is the signal name.
803 generic_event_listener (GSignalInvocationHint * signal_hint,
804 guint n_param_values,
805 const GValue * param_values, gpointer data)
807 AtkObject *accessible;
808 GSignalQuery signal_query;
810 int detail1 = 0, detail2 = 0;
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]));
817 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
818 detail1 = g_value_get_int (¶m_values[1]);
820 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
821 detail2 = g_value_get_int (¶m_values[2]);
823 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
824 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
828 /*---------------------------------------------------------------------------*/
831 * Registers the provided function as a handler for the given signal name
832 * and stores the signal id returned so that the function may be
833 * de-registered later.
836 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
840 id = atk_add_global_event_listener (listener, signal_name);
841 g_array_append_val (listener_ids, id);
845 * Initialization for the signal handlers.
847 * Registers all required signal handlers.
850 spi_atk_register_event_listeners (void)
853 * Kludge to make sure the Atk interface types are registered, otherwise
854 * the AtkText signal handlers below won't get registered
856 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
857 AtkObject *bo = atk_no_op_object_new (ao);
859 g_object_unref (G_OBJECT (bo));
862 /* Register for focus event notifications, and register app with central registry */
863 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
865 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
867 add_signal_listener (property_event_listener,
868 "Gtk:AtkObject:property-change");
869 add_signal_listener (window_event_listener, "window:create");
870 add_signal_listener (window_event_listener, "window:destroy");
871 add_signal_listener (window_event_listener, "window:minimize");
872 add_signal_listener (window_event_listener, "window:maximize");
873 add_signal_listener (window_event_listener, "window:restore");
874 add_signal_listener (window_event_listener, "window:activate");
875 add_signal_listener (window_event_listener, "window:deactivate");
876 add_signal_listener (document_event_listener,
877 "Gtk:AtkDocument:load-complete");
878 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
879 add_signal_listener (document_event_listener,
880 "Gtk:AtkDocument:load-stopped");
881 /* TODO Fake this event on the client side */
882 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
884 add_signal_listener (active_descendant_event_listener,
885 "Gtk:AtkObject:active-descendant-changed");
886 add_signal_listener (bounds_event_listener,
887 "Gtk:AtkComponent:bounds-changed");
888 add_signal_listener (text_selection_changed_event_listener,
889 "Gtk:AtkText:text-selection-changed");
890 add_signal_listener (text_changed_event_listener,
891 "Gtk:AtkText:text-changed");
892 add_signal_listener (link_selected_event_listener,
893 "Gtk:AtkHypertext:link-selected");
894 add_signal_listener (generic_event_listener,
895 "Gtk:AtkObject:visible-data-changed");
896 add_signal_listener (generic_event_listener,
897 "Gtk:AtkSelection:selection-changed");
898 add_signal_listener (generic_event_listener,
899 "Gtk:AtkText:text-attributes-changed");
900 add_signal_listener (generic_event_listener,
901 "Gtk:AtkText:text-caret-moved");
902 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
903 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
904 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
905 add_signal_listener (generic_event_listener,
906 "Gtk:AtkTable:column-inserted");
907 add_signal_listener (generic_event_listener,
908 "Gtk:AtkTable:column-reordered");
909 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
910 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
912 /* Children signal listeners */
913 atk_add_global_event_listener (children_changed_event_listener,
914 "Gtk:AtkObject:children-changed");
917 g_signal_connect (G_OBJECT (spi_global_app_data->root),
918 "children-changed::add",
919 (GCallback) toplevel_added_event_listener, NULL);
921 g_signal_connect (G_OBJECT (spi_global_app_data->root),
922 "children-changed::remove",
923 (GCallback) toplevel_removed_event_listener, NULL);
927 * May add the following listeners to implement preemptive key listening for GTK+
929 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
930 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
932 atk_bridge_key_event_listener_id =
933 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
936 /*---------------------------------------------------------------------------*/
939 * De-registers all ATK signal handlers.
942 spi_atk_deregister_event_listeners (void)
945 GArray *ids = listener_ids;
948 if (atk_bridge_focus_tracker_id)
949 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
951 for (i = 0; ids && i < ids->len; i++)
953 atk_remove_global_event_listener (g_array_index (ids, guint, i));
956 if (atk_bridge_key_event_listener_id)
957 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
960 /*---------------------------------------------------------------------------*/
963 * TODO This function seems out of place here.
965 * Emits fake deactivate signals on all top-level windows.
966 * Used when shutting down AT-SPI, ensuring that all
967 * windows have been removed on the client side.
970 spi_atk_tidy_windows (void)
976 root = atk_get_root ();
977 n_children = atk_object_get_n_accessible_children (root);
978 for (i = 0; i < n_children; i++)
981 AtkStateSet *stateset;
984 child = atk_object_ref_accessible_child (root, i);
985 stateset = atk_object_ref_state_set (child);
987 name = atk_object_get_name (child);
988 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
990 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
991 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
993 g_object_unref (stateset);
995 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
996 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
997 g_object_unref (child);
1001 /*END------------------------------------------------------------------------*/