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 if (getenv ("AT_SPI_CLIENT"))
77 g_main_loop_run (closure.loop);
82 while (!closure.reply)
84 if (!dbus_connection_read_write_dispatch (spi_global_app_data->bus, 1000))
89 g_main_loop_unref (closure.loop);
93 /*---------------------------------------------------------------------------*/
96 * Functionality related to sending device events from the application.
98 * This is used for forwarding key events on to the registry daemon.
102 Accessibility_DeviceEventController_NotifyListenersSync (const
103 Accessibility_DeviceEvent
106 DBusMessage *message;
108 dbus_bool_t consumed = FALSE;
111 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
113 SPI_DBUS_INTERFACE_DEC,
114 "NotifyListenersSync");
116 dbus_error_init (&error);
117 if (spi_dbus_marshal_deviceEvent (message, key_event))
120 send_and_allow_reentry (spi_global_app_data->bus, message);
124 dbus_error_init (&error);
125 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
127 dbus_message_unref (reply);
130 dbus_message_unref (message);
135 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
136 AtkKeyEventStruct * event)
138 keystroke->id = (dbus_int32_t) event->keyval;
139 keystroke->hw_code = (dbus_int16_t) event->keycode;
140 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
141 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
146 keystroke->event_string = g_strdup (event->string);
147 c = g_utf8_get_char_validated (event->string, -1);
148 if (c > 0 && g_unichar_isprint (c))
149 keystroke->is_text = TRUE;
151 keystroke->is_text = FALSE;
155 keystroke->event_string = g_strdup ("");
156 keystroke->is_text = FALSE;
160 case (ATK_KEY_EVENT_PRESS):
161 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
163 case (ATK_KEY_EVENT_RELEASE):
164 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
172 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
173 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
174 (int) keystroke->modifiers, keystroke->event_string,
175 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
181 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
184 Accessibility_DeviceEvent key_event;
186 spi_init_keystroke_from_atk_key_event (&key_event, event);
189 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
191 if (key_event.event_string)
192 g_free (key_event.event_string);
197 /*---------------------------------------------------------------------------*/
200 convert_signal_name (const gchar * s)
202 gchar *ret = g_strdup (s);
207 ret[0] = toupper (ret[0]);
208 while ((t = strchr (ret, '-')) != NULL)
210 memmove (t, t + 1, strlen (t));
217 replace_null (const gint type,
222 case DBUS_TYPE_STRING:
223 case DBUS_TYPE_OBJECT_PATH:
234 append_basic (DBusMessageIter *iter,
240 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
242 val = replace_null ((int) *type, val);
243 dbus_message_iter_append_basic(&sub, (int) *type, &val);
245 dbus_message_iter_close_container(iter, &sub);
249 append_rect (DBusMessageIter *iter,
253 DBusMessageIter variant, sub;
254 const AtkRectangle *rect = (const AtkRectangle *) val;
256 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
258 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
260 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
261 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
262 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
263 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
265 dbus_message_iter_close_container (&variant, &sub);
267 dbus_message_iter_close_container(iter, &variant);
271 append_object (DBusMessageIter *iter,
275 spi_object_append_v_reference (iter, ATK_OBJECT (val));
279 signal_name_to_dbus (const gchar *s)
281 gchar *ret = g_strdup (s);
286 ret [0] = toupper (ret [0]);
287 while ((t = strchr (ret, '-')) != NULL)
289 memmove (t, t + 1, strlen (t));
296 * Emits an AT-SPI event.
297 * AT-SPI events names are split into three parts:
299 * This is mapped onto D-Bus events as:
300 * D-Bus Interface:Signal Name:Detail argument
302 * Marshals a basic type into the 'any_data' attribute of
306 emit_event (AtkObject *obj,
310 dbus_int32_t detail1,
311 dbus_int32_t detail2,
314 void (*append_variant) (DBusMessageIter *, const char *, const void *))
316 DBusConnection *bus = spi_global_app_data->bus;
317 const char *path = spi_register_object_to_path (spi_global_register,
322 DBusMessageIter iter, iter_struct;
324 if (!klass) klass = "";
325 if (!major) major = "";
326 if (!minor) minor = "";
327 if (!type) type = "u";
330 * This is very annoying, but as '-' isn't a legal signal
331 * name in D-Bus (Why not??!?) The names need converting
332 * on this side, and again on the client side.
334 cname = signal_name_to_dbus (major);
335 sig = dbus_message_new_signal(path, klass, cname);
338 dbus_message_iter_init_append(sig, &iter);
340 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
341 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
342 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
343 append_variant (&iter, type, val);
344 spi_object_append_reference (&iter, spi_global_app_data->root);
346 dbus_connection_send(bus, sig, NULL);
347 dbus_message_unref(sig);
349 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
350 spi_object_lease_if_needed (G_OBJECT (obj));
353 /*---------------------------------------------------------------------------*/
356 * The focus listener handles the ATK 'focus' signal and forwards it
357 * as the AT-SPI event, 'focus:'
360 focus_tracker (AtkObject * accessible)
362 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
363 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
366 /*---------------------------------------------------------------------------*/
368 #define PCHANGE "PropertyChange"
371 * This handler handles the following ATK signals and
372 * converts them to AT-SPI events:
374 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
376 * The property-name is part of the ATK property-change signal.
379 property_event_listener (GSignalInvocationHint * signal_hint,
380 guint n_param_values,
381 const GValue * param_values, gpointer data)
383 AtkObject *accessible;
384 AtkPropertyValues *values;
386 const gchar *pname = NULL;
392 accessible = g_value_get_object (¶m_values[0]);
393 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
395 pname = values[0].property_name;
397 /* TODO Could improve this control statement by matching
398 * on only the end of the signal names,
400 if (strcmp (pname, "accessible-name") == 0)
402 s1 = atk_object_get_name (accessible);
404 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
405 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
407 else if (strcmp (pname, "accessible-description") == 0)
409 s1 = atk_object_get_description (accessible);
411 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
412 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
414 else if (strcmp (pname, "accessible-parent") == 0)
416 otemp = atk_object_get_parent (accessible);
418 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
419 "(so)", otemp, append_object);
421 else if (strcmp (pname, "accessible-role") == 0)
423 i = atk_object_get_role (accessible);
424 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
425 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
427 else if (strcmp (pname, "accessible-table-summary") == 0)
429 otemp = atk_table_get_summary (ATK_TABLE (accessible));
431 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
432 "(so)", otemp, append_object);
434 else if (strcmp (pname, "accessible-table-column-header") == 0)
436 i = g_value_get_int (&(values->new_value));
437 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
439 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
440 "(so)", otemp, append_object);
442 else if (strcmp (pname, "accessible-table-row-header") == 0)
444 i = g_value_get_int (&(values->new_value));
445 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
447 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
448 "(so)", otemp, append_object);
450 else if (strcmp (pname, "accessible-table-row-description") == 0)
452 i = g_value_get_int (&(values->new_value));
453 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
454 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
455 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
457 else if (strcmp (pname, "accessible-table-column-description") == 0)
459 i = g_value_get_int (&(values->new_value));
460 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
461 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
462 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
464 else if (strcmp (pname, "accessible-table-caption-object") == 0)
466 otemp = atk_table_get_caption (ATK_TABLE (accessible));
467 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
468 "(so)", otemp, append_object);
472 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
473 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
478 /*---------------------------------------------------------------------------*/
480 #define STATE_CHANGED "state-changed"
483 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
484 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
485 * the param-name is part of the ATK state-change signal.
488 state_event_listener (GSignalInvocationHint * signal_hint,
489 guint n_param_values,
490 const GValue * param_values, gpointer data)
492 AtkObject *accessible;
496 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
497 pname = g_strdup (g_value_get_string (¶m_values[1]));
499 /* TODO - Possibly ignore a change to the 'defunct' state.
500 * This is because without reference counting defunct objects should be removed.
502 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
503 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
504 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
509 /*---------------------------------------------------------------------------*/
512 * The window event listener handles the following ATK signals and forwards
513 * them as AT-SPI events:
515 * window:create -> window:create
516 * window:destroy -> window:destroy
517 * window:minimize -> window:minimize
518 * window:maximize -> window:maximize
519 * window:activate -> window:activate
520 * window:deactivate -> window:deactivate
523 window_event_listener (GSignalInvocationHint * signal_hint,
524 guint n_param_values,
525 const GValue * param_values, gpointer data)
527 AtkObject *accessible;
528 GSignalQuery signal_query;
529 const gchar *name, *s;
531 g_signal_query (signal_hint->signal_id, &signal_query);
532 name = signal_query.signal_name;
534 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
535 s = atk_object_get_name (accessible);
536 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
537 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
542 /*---------------------------------------------------------------------------*/
545 * The document event listener handles the following ATK signals
546 * and converts them to AT-SPI events:
548 * Gtk:AtkDocument:load-complete -> document:load-complete
549 * Gtk:AtkDocument:load-stopped -> document:load-stopped
550 * Gtk:AtkDocument:reload -> document:reload
553 document_event_listener (GSignalInvocationHint * signal_hint,
554 guint n_param_values,
555 const GValue * param_values, gpointer data)
557 AtkObject *accessible;
558 GSignalQuery signal_query;
559 const gchar *name, *s;
561 g_signal_query (signal_hint->signal_id, &signal_query);
562 name = signal_query.signal_name;
564 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
565 s = atk_object_get_name (accessible);
566 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
567 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
572 /*---------------------------------------------------------------------------*/
575 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
576 * this to an AT-SPI event - "object:bounds-changed".
579 bounds_event_listener (GSignalInvocationHint * signal_hint,
580 guint n_param_values,
581 const GValue * param_values, gpointer data)
583 AtkObject *accessible;
584 AtkRectangle *atk_rect;
585 GSignalQuery signal_query;
586 const gchar *name, *s;
588 g_signal_query (signal_hint->signal_id, &signal_query);
589 name = signal_query.signal_name;
591 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
593 if (G_VALUE_HOLDS_BOXED (param_values + 1))
595 atk_rect = g_value_get_boxed (param_values + 1);
597 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
598 "(iiii)", atk_rect, append_rect);
603 /*---------------------------------------------------------------------------*/
606 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
607 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
611 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
612 guint n_param_values,
613 const GValue * param_values, gpointer data)
615 AtkObject *accessible;
617 GSignalQuery signal_query;
618 const gchar *name, *minor;
621 g_signal_query (signal_hint->signal_id, &signal_query);
622 name = signal_query.signal_name;
624 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
625 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
626 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
627 minor = g_quark_to_string (signal_hint->detail);
629 detail1 = atk_object_get_index_in_parent (child);
631 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
632 "(so)", child, append_object);
636 /*---------------------------------------------------------------------------*/
639 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
640 * converts it to the AT-SPI signal - 'object:link-selected'
644 link_selected_event_listener (GSignalInvocationHint * signal_hint,
645 guint n_param_values,
646 const GValue * param_values, gpointer data)
648 AtkObject *accessible;
649 GSignalQuery signal_query;
650 const gchar *name, *minor;
653 g_signal_query (signal_hint->signal_id, &signal_query);
654 name = signal_query.signal_name;
656 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
657 minor = g_quark_to_string (signal_hint->detail);
659 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
660 detail1 = g_value_get_int (¶m_values[1]);
662 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
663 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
667 /*---------------------------------------------------------------------------*/
670 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
671 * converts it to the AT-SPI signal - 'object:text-changed'
675 text_changed_event_listener (GSignalInvocationHint * signal_hint,
676 guint n_param_values,
677 const GValue * param_values, gpointer data)
679 AtkObject *accessible;
680 GSignalQuery signal_query;
681 const gchar *name, *minor;
683 gint detail1, detail2;
685 g_signal_query (signal_hint->signal_id, &signal_query);
686 name = signal_query.signal_name;
688 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
689 minor = g_quark_to_string (signal_hint->detail);
691 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
692 detail1 = g_value_get_int (¶m_values[1]);
694 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
695 detail2 = g_value_get_int (¶m_values[2]);
698 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
700 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
701 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
705 /*---------------------------------------------------------------------------*/
708 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
709 * converts it to the AT-SPI signal - 'object:text-selection-changed'
713 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
714 guint n_param_values,
715 const GValue * param_values,
718 AtkObject *accessible;
719 GSignalQuery signal_query;
720 const gchar *name, *minor;
721 gint detail1, detail2;
723 g_signal_query (signal_hint->signal_id, &signal_query);
724 name = signal_query.signal_name;
726 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
727 minor = g_quark_to_string (signal_hint->detail);
729 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
730 detail1 = g_value_get_int (¶m_values[1]);
732 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
733 detail2 = g_value_get_int (¶m_values[2]);
735 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
736 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
740 /*---------------------------------------------------------------------------*/
743 * Children changed signal converter and forwarder.
745 * Klass (Interface) org.a11y.atspi.Event.Object
746 * Major is the signal name.
747 * Minor is 'add' or 'remove'
748 * detail1 is the index.
750 * any_data is the child reference.
753 children_changed_event_listener (GSignalInvocationHint * signal_hint,
754 guint n_param_values,
755 const GValue * param_values, gpointer data)
757 GSignalQuery signal_query;
758 const gchar *name, *minor;
759 gint detail1, detail2 = 0;
761 AtkObject *accessible, *ao=NULL;
764 g_signal_query (signal_hint->signal_id, &signal_query);
765 name = signal_query.signal_name;
767 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
768 minor = g_quark_to_string (signal_hint->detail);
770 detail1 = g_value_get_uint (param_values + 1);
771 child = g_value_get_pointer (param_values + 2);
773 if (ATK_IS_OBJECT (child))
775 ao = ATK_OBJECT (child);
776 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
777 "(so)", ao, append_object);
779 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
781 ao = atk_object_ref_accessible_child (accessible,
783 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
784 "(so)", ao, append_object);
788 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
789 "(so)", ao, append_object);
795 /*---------------------------------------------------------------------------*/
798 toplevel_added_event_listener (AtkObject * accessible,
799 guint index, AtkObject * child)
801 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
802 "(so)", child, append_object);
806 toplevel_removed_event_listener (AtkObject * accessible,
807 guint index, AtkObject * child)
809 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
810 "(so)", child, append_object);
813 /*---------------------------------------------------------------------------*/
816 * Generic signal converter and forwarder.
818 * Klass (Interface) org.a11y.atspi.Event.Object
819 * Major is the signal name.
826 generic_event_listener (GSignalInvocationHint * signal_hint,
827 guint n_param_values,
828 const GValue * param_values, gpointer data)
830 AtkObject *accessible;
831 GSignalQuery signal_query;
833 int detail1 = 0, detail2 = 0;
835 g_signal_query (signal_hint->signal_id, &signal_query);
836 name = signal_query.signal_name;
838 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
840 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
841 detail1 = g_value_get_int (¶m_values[1]);
843 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
844 detail2 = g_value_get_int (¶m_values[2]);
846 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
847 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
851 /*---------------------------------------------------------------------------*/
854 * Registers the provided function as a handler for the given signal name
855 * and stores the signal id returned so that the function may be
856 * de-registered later.
859 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
863 id = atk_add_global_event_listener (listener, signal_name);
864 g_array_append_val (listener_ids, id);
868 * Initialization for the signal handlers.
870 * Registers all required signal handlers.
873 spi_atk_register_event_listeners (void)
876 * Kludge to make sure the Atk interface types are registered, otherwise
877 * the AtkText signal handlers below won't get registered
879 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
880 AtkObject *bo = atk_no_op_object_new (ao);
882 g_object_unref (G_OBJECT (bo));
885 /* Register for focus event notifications, and register app with central registry */
886 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
888 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
890 add_signal_listener (property_event_listener,
891 "Gtk:AtkObject:property-change");
892 add_signal_listener (window_event_listener, "window:create");
893 add_signal_listener (window_event_listener, "window:destroy");
894 add_signal_listener (window_event_listener, "window:minimize");
895 add_signal_listener (window_event_listener, "window:maximize");
896 add_signal_listener (window_event_listener, "window:restore");
897 add_signal_listener (window_event_listener, "window:activate");
898 add_signal_listener (window_event_listener, "window:deactivate");
899 add_signal_listener (document_event_listener,
900 "Gtk:AtkDocument:load-complete");
901 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
902 add_signal_listener (document_event_listener,
903 "Gtk:AtkDocument:load-stopped");
904 /* TODO Fake this event on the client side */
905 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
907 add_signal_listener (active_descendant_event_listener,
908 "Gtk:AtkObject:active-descendant-changed");
909 add_signal_listener (bounds_event_listener,
910 "Gtk:AtkComponent:bounds-changed");
911 add_signal_listener (text_selection_changed_event_listener,
912 "Gtk:AtkText:text-selection-changed");
913 add_signal_listener (text_changed_event_listener,
914 "Gtk:AtkText:text-changed");
915 add_signal_listener (link_selected_event_listener,
916 "Gtk:AtkHypertext:link-selected");
917 add_signal_listener (generic_event_listener,
918 "Gtk:AtkObject:visible-data-changed");
919 add_signal_listener (generic_event_listener,
920 "Gtk:AtkSelection:selection-changed");
921 add_signal_listener (generic_event_listener,
922 "Gtk:AtkText:text-attributes-changed");
923 add_signal_listener (generic_event_listener,
924 "Gtk:AtkText:text-caret-moved");
925 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
926 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
927 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
928 add_signal_listener (generic_event_listener,
929 "Gtk:AtkTable:column-inserted");
930 add_signal_listener (generic_event_listener,
931 "Gtk:AtkTable:column-reordered");
932 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
933 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
935 /* Children signal listeners */
936 atk_add_global_event_listener (children_changed_event_listener,
937 "Gtk:AtkObject:children-changed");
940 g_signal_connect (G_OBJECT (spi_global_app_data->root),
941 "children-changed::add",
942 (GCallback) toplevel_added_event_listener, NULL);
944 g_signal_connect (G_OBJECT (spi_global_app_data->root),
945 "children-changed::remove",
946 (GCallback) toplevel_removed_event_listener, NULL);
950 * May add the following listeners to implement preemptive key listening for GTK+
952 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
953 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
955 atk_bridge_key_event_listener_id =
956 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
959 /*---------------------------------------------------------------------------*/
962 * De-registers all ATK signal handlers.
965 spi_atk_deregister_event_listeners (void)
968 GArray *ids = listener_ids;
971 if (atk_bridge_focus_tracker_id)
972 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
974 for (i = 0; ids && i < ids->len; i++)
976 atk_remove_global_event_listener (g_array_index (ids, guint, i));
979 if (atk_bridge_key_event_listener_id)
980 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
983 /*---------------------------------------------------------------------------*/
986 * TODO This function seems out of place here.
988 * Emits fake deactivate signals on all top-level windows.
989 * Used when shutting down AT-SPI, ensuring that all
990 * windows have been removed on the client side.
993 spi_atk_tidy_windows (void)
999 root = atk_get_root ();
1000 n_children = atk_object_get_n_accessible_children (root);
1001 for (i = 0; i < n_children; i++)
1004 AtkStateSet *stateset;
1007 child = atk_object_ref_accessible_child (root, i);
1008 stateset = atk_object_ref_state_set (child);
1010 name = atk_object_get_name (child);
1011 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1013 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1014 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1016 g_object_unref (stateset);
1018 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1019 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1020 g_object_unref (child);
1024 /*END------------------------------------------------------------------------*/