2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2011, F123 Consulting & Mais Diferenças
6 * Copyright 2008, 2009, Codethink Ltd.
7 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
8 * Copyright 2001, 2002, 2003 Ximian, Inc.
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
20 * You should have received a copy of the GNU Library General Public
21 * License along with this library; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 02111-1307, USA.
30 #include <droute/droute.h>
31 #include <atspi/atspi.h>
34 #include "accessible-register.h"
40 static GArray *listener_ids = NULL;
42 static gint atk_bridge_key_event_listener_id;
43 static gint atk_bridge_focus_tracker_id;
45 /*---------------------------------------------------------------------------*/
47 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
48 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
49 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
50 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
52 /*---------------------------------------------------------------------------*/
54 typedef struct _SpiReentrantCallClosure
60 } SpiReentrantCallClosure;
63 switch_main_context (GMainContext *cnx)
67 if (spi_global_app_data->server)
68 atspi_dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
69 atspi_dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
70 for (list = spi_global_app_data->direct_connections; list; list = list->next)
71 atspi_dbus_connection_setup_with_g_main (list->data, cnx);
75 set_reply (DBusPendingCall * pending, void *user_data)
77 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
79 closure->reply = dbus_pending_call_steal_reply (pending);
80 dbus_pending_call_unref (pending);
81 switch_main_context (NULL);
82 g_main_loop_quit (closure->loop);
86 timeout_reply (void *data)
88 SpiReentrantCallClosure *closure = data;
90 if (!dbus_connection_get_is_connected (closure->bus))
91 g_main_loop_quit (closure->loop);
92 closure->timeout = -1;
97 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
99 DBusPendingCall *pending;
100 SpiReentrantCallClosure closure;
101 GMainContext *main_context;
104 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
105 spi_global_app_data->main_context);
107 closure.loop = g_main_loop_new (main_context, FALSE);
108 closure.reply = NULL;
109 switch_main_context (main_context);
111 if (!dbus_connection_send_with_reply (bus, message, &pending, 9000) || !pending)
113 switch_main_context (NULL);
116 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
117 source = g_timeout_source_new (500);
118 g_source_set_callback (source, timeout_reply, &closure, NULL);
119 closure.timeout = g_source_attach (source, main_context);
120 g_source_unref (source);
121 g_main_loop_run (closure.loop);
122 if (closure.timeout != -1)
123 g_source_destroy (source);
125 g_main_loop_unref (closure.loop);
126 return closure.reply;
129 /*---------------------------------------------------------------------------*/
132 * Functionality related to sending device events from the application.
134 * This is used for forwarding key events on to the registry daemon.
138 Accessibility_DeviceEventController_NotifyListenersSync (const
142 DBusMessage *message;
144 dbus_bool_t consumed = FALSE;
147 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
149 ATSPI_DBUS_INTERFACE_DEC,
150 "NotifyListenersSync");
152 dbus_error_init (&error);
153 if (spi_dbus_marshal_deviceEvent (message, key_event))
156 send_and_allow_reentry (spi_global_app_data->bus, message);
160 dbus_error_init (&error);
161 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
163 dbus_message_unref (reply);
166 dbus_message_unref (message);
171 spi_init_keystroke_from_atk_key_event (AtspiDeviceEvent * keystroke,
172 AtkKeyEventStruct * event)
174 keystroke->id = (dbus_int32_t) event->keyval;
175 keystroke->hw_code = (dbus_int16_t) event->keycode;
176 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
177 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
182 keystroke->event_string = g_strdup (event->string);
183 c = g_utf8_get_char_validated (event->string, -1);
184 if (c > 0 && g_unichar_isprint (c))
185 keystroke->is_text = TRUE;
187 keystroke->is_text = FALSE;
191 keystroke->event_string = g_strdup ("");
192 keystroke->is_text = FALSE;
196 case (ATK_KEY_EVENT_PRESS):
197 keystroke->type = ATSPI_KEY_PRESSED;
199 case (ATK_KEY_EVENT_RELEASE):
200 keystroke->type = ATSPI_KEY_RELEASED;
208 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
209 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
210 (int) keystroke->modifiers, keystroke->event_string,
211 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
217 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
220 AtspiDeviceEvent key_event;
222 spi_init_keystroke_from_atk_key_event (&key_event, event);
225 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
227 if (key_event.event_string)
228 g_free (key_event.event_string);
233 /*---------------------------------------------------------------------------*/
236 validate_for_dbus (const gint type,
241 case DBUS_TYPE_STRING:
242 case DBUS_TYPE_OBJECT_PATH:
245 else if (!g_utf8_validate (val, -1, NULL))
247 g_warning ("atk-bridge: Received bad UTF-8 string when emitting event");
258 append_basic (DBusMessageIter *iter,
264 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
266 val = validate_for_dbus ((int) *type, val);
267 dbus_message_iter_append_basic(&sub, (int) *type, &val);
269 dbus_message_iter_close_container(iter, &sub);
273 append_rect (DBusMessageIter *iter,
277 DBusMessageIter variant, sub;
278 const AtkRectangle *rect = (const AtkRectangle *) val;
280 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
282 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
284 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
285 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
286 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
287 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
289 dbus_message_iter_close_container (&variant, &sub);
291 dbus_message_iter_close_container(iter, &variant);
295 append_object (DBusMessageIter *iter,
299 spi_object_append_v_reference (iter, ATK_OBJECT (val));
303 signal_name_to_dbus (const gchar *s)
305 gchar *ret = g_strdup (s);
310 ret [0] = toupper (ret [0]);
311 while ((t = strchr (ret, '-')) != NULL)
313 memmove (t, t + 1, strlen (t));
320 * Converts names of the form "active-descendant-changed" to
321 * "ActiveDescendantChanged"
324 ensure_proper_format (const char *name)
326 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
328 gboolean need_upper = TRUE;
336 *p++ = toupper (*name);
339 else if (*name == '-')
341 else if (*name == ':')
355 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
359 gboolean ret = FALSE;
362 if (!spi_global_app_data->events_initialized)
365 data [0] = ensure_proper_format (klass + 21);
366 data [1] = ensure_proper_format (major);
367 data [2] = ensure_proper_format (minor);
370 /* Hack: Always pass events that update the cache.
371 * TODO: FOr 2.2, have at-spi2-core define a special "cache listener" for
372 * this instead, so that we don't send these if no one is listening */
373 if (!g_strcmp0 (data [1], "ChildrenChanged") ||
374 !g_strcmp0 (data [1], "PropertyChange") ||
375 !g_strcmp0 (data [1], "StateChanged"))
383 /* Hack: events such as "object::text-changed::insert:system" as
384 generated by Gecko */
385 data [2][strcspn (data [2], ":")] = '\0';
386 for (list = spi_global_app_data->events; list; list = list->next)
389 if (spi_event_is_subtype (data, evdata->data))
397 g_print("event: %s %s %s: %d\n", data[0], data[1], data[2], ret);
405 /* Convert a : to a / so that listeners can use arg0path to match only
408 adapt_minor_for_dbus (const char *source)
410 gchar *ret = g_strdup (source);
411 int i = strcspn (ret, ":");
418 * Emits an AT-SPI event.
419 * AT-SPI events names are split into three parts:
421 * This is mapped onto D-Bus events as:
422 * D-Bus Interface:Signal Name:Detail argument
424 * Marshals a basic type into the 'any_data' attribute of
428 emit_event (AtkObject *obj,
432 dbus_int32_t detail1,
433 dbus_int32_t detail2,
436 void (*append_variant) (DBusMessageIter *, const char *, const void *))
438 DBusConnection *bus = spi_global_app_data->bus;
444 DBusMessageIter iter;
446 if (!klass) klass = "";
447 if (!major) major = "";
448 if (!minor) minor = "";
449 if (!type) type = "u";
451 if (!signal_is_needed (klass, major, minor))
454 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
455 g_return_if_fail (path != NULL);
458 * This is very annoying, but as '-' isn't a legal signal
459 * name in D-Bus (Why not??!?) The names need converting
460 * on this side, and again on the client side.
462 cname = signal_name_to_dbus (major);
463 sig = dbus_message_new_signal(path, klass, cname);
465 dbus_message_iter_init_append(sig, &iter);
467 minor_dbus = adapt_minor_for_dbus (minor);
468 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor_dbus);
470 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
471 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
472 append_variant (&iter, type, val);
473 spi_object_append_reference (&iter, spi_global_app_data->root);
475 dbus_connection_send(bus, sig, NULL);
476 dbus_message_unref(sig);
478 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
479 spi_object_lease_if_needed (G_OBJECT (obj));
485 /*---------------------------------------------------------------------------*/
488 * The focus listener handles the ATK 'focus' signal and forwards it
489 * as the AT-SPI event, 'focus:'
492 focus_tracker (AtkObject * accessible)
494 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
495 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
498 /*---------------------------------------------------------------------------*/
500 #define PCHANGE "PropertyChange"
503 * This handler handles the following ATK signals and
504 * converts them to AT-SPI events:
506 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
508 * The property-name is part of the ATK property-change signal.
511 property_event_listener (GSignalInvocationHint * signal_hint,
512 guint n_param_values,
513 const GValue * param_values, gpointer data)
515 AtkObject *accessible;
516 AtkPropertyValues *values;
518 const gchar *pname = NULL;
524 accessible = g_value_get_object (¶m_values[0]);
525 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
527 pname = values[0].property_name;
529 /* TODO Could improve this control statement by matching
530 * on only the end of the signal names,
532 if (strcmp (pname, "accessible-name") == 0)
534 s1 = atk_object_get_name (accessible);
536 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
537 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
539 else if (strcmp (pname, "accessible-description") == 0)
541 s1 = atk_object_get_description (accessible);
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-parent") == 0)
548 otemp = atk_object_get_parent (accessible);
550 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
551 "(so)", otemp, append_object);
553 else if (strcmp (pname, "accessible-role") == 0)
555 i = atk_object_get_role (accessible);
556 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
557 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
559 else if (strcmp (pname, "accessible-table-summary") == 0)
561 otemp = atk_table_get_summary (ATK_TABLE (accessible));
563 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
564 "(so)", otemp, append_object);
566 else if (strcmp (pname, "accessible-table-column-header") == 0)
568 i = g_value_get_int (&(values->new_value));
569 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
571 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
572 "(so)", otemp, append_object);
574 else if (strcmp (pname, "accessible-table-row-header") == 0)
576 i = g_value_get_int (&(values->new_value));
577 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
579 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
580 "(so)", otemp, append_object);
582 else if (strcmp (pname, "accessible-table-row-description") == 0)
584 i = g_value_get_int (&(values->new_value));
585 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
586 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
587 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
589 else if (strcmp (pname, "accessible-table-column-description") == 0)
591 i = g_value_get_int (&(values->new_value));
592 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
593 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
594 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
596 else if (strcmp (pname, "accessible-table-caption-object") == 0)
598 otemp = atk_table_get_caption (ATK_TABLE (accessible));
599 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
600 "(so)", otemp, append_object);
604 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
605 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
610 /*---------------------------------------------------------------------------*/
612 #define STATE_CHANGED "state-changed"
615 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
616 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
617 * the param-name is part of the ATK state-change signal.
620 state_event_listener (GSignalInvocationHint * signal_hint,
621 guint n_param_values,
622 const GValue * param_values, gpointer data)
624 AtkObject *accessible;
628 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
629 pname = g_value_get_string (¶m_values[1]);
631 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
632 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
633 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
635 if (!g_strcmp0 (pname, "defunct") && detail1)
636 spi_register_deregister_object (spi_global_register, G_OBJECT (accessible),
641 /*---------------------------------------------------------------------------*/
644 * The window event listener handles the following ATK signals and forwards
645 * them as AT-SPI events:
647 * window:create -> window:create
648 * window:destroy -> window:destroy
649 * window:minimize -> window:minimize
650 * window:maximize -> window:maximize
651 * window:activate -> window:activate
652 * window:deactivate -> window:deactivate
655 window_event_listener (GSignalInvocationHint * signal_hint,
656 guint n_param_values,
657 const GValue * param_values, gpointer data)
659 AtkObject *accessible;
660 GSignalQuery signal_query;
661 const gchar *name, *s;
663 g_signal_query (signal_hint->signal_id, &signal_query);
664 name = signal_query.signal_name;
666 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
667 s = atk_object_get_name (accessible);
668 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
669 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
674 /*---------------------------------------------------------------------------*/
677 * The document event listener handles the following ATK signals
678 * and converts them to AT-SPI events:
680 * Gtk:AtkDocument:load-complete -> document:load-complete
681 * Gtk:AtkDocument:load-stopped -> document:load-stopped
682 * Gtk:AtkDocument:reload -> document:reload
685 document_event_listener (GSignalInvocationHint * signal_hint,
686 guint n_param_values,
687 const GValue * param_values, gpointer data)
689 AtkObject *accessible;
690 GSignalQuery signal_query;
691 const gchar *name, *s;
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 s = atk_object_get_name (accessible);
698 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
699 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
704 /*---------------------------------------------------------------------------*/
707 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
708 * this to an AT-SPI event - "object:bounds-changed".
711 bounds_event_listener (GSignalInvocationHint * signal_hint,
712 guint n_param_values,
713 const GValue * param_values, gpointer data)
715 AtkObject *accessible;
716 AtkRectangle *atk_rect;
717 GSignalQuery signal_query;
720 g_signal_query (signal_hint->signal_id, &signal_query);
721 name = signal_query.signal_name;
723 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
725 if (G_VALUE_HOLDS_BOXED (param_values + 1))
727 atk_rect = g_value_get_boxed (param_values + 1);
729 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
730 "(iiii)", atk_rect, append_rect);
735 /*---------------------------------------------------------------------------*/
738 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
739 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
743 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
744 guint n_param_values,
745 const GValue * param_values, gpointer data)
747 AtkObject *accessible;
749 GSignalQuery signal_query;
753 g_signal_query (signal_hint->signal_id, &signal_query);
754 name = signal_query.signal_name;
756 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
757 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
758 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
760 detail1 = atk_object_get_index_in_parent (child);
762 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
763 "(so)", child, append_object);
767 /*---------------------------------------------------------------------------*/
770 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
771 * converts it to the AT-SPI signal - 'object:link-selected'
775 link_selected_event_listener (GSignalInvocationHint * signal_hint,
776 guint n_param_values,
777 const GValue * param_values, gpointer data)
779 AtkObject *accessible;
780 GSignalQuery signal_query;
781 const gchar *name, *minor;
784 g_signal_query (signal_hint->signal_id, &signal_query);
785 name = signal_query.signal_name;
787 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
788 minor = g_quark_to_string (signal_hint->detail);
790 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
791 detail1 = g_value_get_int (¶m_values[1]);
793 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
794 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
798 /*---------------------------------------------------------------------------*/
801 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
802 * converts it to the AT-SPI signal - 'object:text-changed'
803 * This signal is deprecated by Gtk:AtkText:text-insert
804 * and Gtk:AtkText:text-remove
808 text_changed_event_listener (GSignalInvocationHint * signal_hint,
809 guint n_param_values,
810 const GValue * param_values, gpointer data)
812 AtkObject *accessible;
813 GSignalQuery signal_query;
814 const gchar *name, *minor;
816 gint detail1 = 0, detail2 = 0;
818 g_signal_query (signal_hint->signal_id, &signal_query);
819 name = signal_query.signal_name;
821 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
822 minor = g_quark_to_string (signal_hint->detail);
824 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
825 detail1 = g_value_get_int (¶m_values[1]);
827 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
828 detail2 = g_value_get_int (¶m_values[2]);
831 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
833 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
834 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
841 * Handles the ATK signal 'Gtk:AtkText:text-insert' and
842 * converts it to the AT-SPI signal - 'object:text-changed'
846 text_insert_event_listener (GSignalInvocationHint * signal_hint,
847 guint n_param_values,
848 const GValue * param_values, gpointer data)
850 AtkObject *accessible;
851 guint text_changed_signal_id;
852 GSignalQuery signal_query;
854 const gchar *minor_raw, *text;
856 gint detail1 = 0, detail2 = 0;
858 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
859 /* Get signal name for 'Gtk:AtkText:text-changed' so
860 * we convert it to the AT-SPI signal - 'object:text-changed'
862 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
863 g_signal_query (text_changed_signal_id, &signal_query);
864 name = signal_query.signal_name;
867 /* Add the insert and keep any detail coming from atk */
868 minor_raw = g_quark_to_string (signal_hint->detail);
870 minor = g_strconcat ("insert:", minor_raw, NULL);
872 minor = g_strdup ("insert");
874 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
875 detail1 = g_value_get_int (¶m_values[1]);
877 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
878 detail2 = g_value_get_int (¶m_values[2]);
880 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
881 text = g_value_get_string (¶m_values[3]);
883 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
884 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
890 * Handles the ATK signal 'Gtk:AtkText:text-remove' and
891 * converts it to the AT-SPI signal - 'object:text-changed'
895 text_remove_event_listener (GSignalInvocationHint * signal_hint,
896 guint n_param_values,
897 const GValue * param_values, gpointer data)
899 AtkObject *accessible;
900 guint text_changed_signal_id;
901 GSignalQuery signal_query;
903 const gchar *minor_raw, *text;
905 gint detail1 = 0, detail2 = 0;
907 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
908 /* Get signal name for 'Gtk:AtkText:text-changed' so
909 * we convert it to the AT-SPI signal - 'object:text-changed'
911 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
912 g_signal_query (text_changed_signal_id, &signal_query);
913 name = signal_query.signal_name;
915 minor_raw = g_quark_to_string (signal_hint->detail);
917 /* Add the delete and keep any detail coming from atk */
919 minor = g_strconcat ("delete:", minor_raw, NULL);
921 minor = g_strdup ("delete");
923 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
924 detail1 = g_value_get_int (¶m_values[1]);
926 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
927 detail2 = g_value_get_int (¶m_values[2]);
929 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
930 text = g_value_get_string (¶m_values[3]);
932 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
933 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
939 /*---------------------------------------------------------------------------*/
942 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
943 * converts it to the AT-SPI signal - 'object:text-selection-changed'
947 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
948 guint n_param_values,
949 const GValue * param_values,
952 AtkObject *accessible;
953 GSignalQuery signal_query;
954 const gchar *name, *minor;
955 gint detail1 = 0, detail2 = 0;
957 g_signal_query (signal_hint->signal_id, &signal_query);
958 name = signal_query.signal_name;
960 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
961 minor = g_quark_to_string (signal_hint->detail);
963 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
964 detail1 = g_value_get_int (¶m_values[1]);
966 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
967 detail2 = g_value_get_int (¶m_values[2]);
969 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
970 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
974 /*---------------------------------------------------------------------------*/
977 * Children changed signal converter and forwarder.
979 * Klass (Interface) org.a11y.atspi.Event.Object
980 * Major is the signal name.
981 * Minor is 'add' or 'remove'
982 * detail1 is the index.
984 * any_data is the child reference.
987 children_changed_event_listener (GSignalInvocationHint * signal_hint,
988 guint n_param_values,
989 const GValue * param_values, gpointer data)
991 GSignalQuery signal_query;
992 const gchar *name, *minor;
993 gint detail1 = 0, detail2 = 0;
995 AtkObject *accessible, *ao=NULL;
998 g_signal_query (signal_hint->signal_id, &signal_query);
999 name = signal_query.signal_name;
1001 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1002 minor = g_quark_to_string (signal_hint->detail);
1004 detail1 = g_value_get_uint (param_values + 1);
1005 child = g_value_get_pointer (param_values + 2);
1007 if (ATK_IS_OBJECT (child))
1009 ao = ATK_OBJECT (child);
1010 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1011 "(so)", ao, append_object);
1013 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
1015 ao = atk_object_ref_accessible_child (accessible,
1017 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1018 "(so)", ao, append_object);
1019 g_object_unref (ao);
1023 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1024 "(so)", ao, append_object);
1030 /*---------------------------------------------------------------------------*/
1033 * Generic signal converter and forwarder.
1035 * Klass (Interface) org.a11y.atspi.Event.Object
1036 * Major is the signal name.
1043 generic_event_listener (GSignalInvocationHint * signal_hint,
1044 guint n_param_values,
1045 const GValue * param_values, gpointer data)
1047 AtkObject *accessible;
1048 GSignalQuery signal_query;
1050 int detail1 = 0, detail2 = 0;
1052 g_signal_query (signal_hint->signal_id, &signal_query);
1053 name = signal_query.signal_name;
1055 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1057 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
1058 detail1 = g_value_get_int (¶m_values[1]);
1060 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
1061 detail2 = g_value_get_int (¶m_values[2]);
1063 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
1064 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
1068 /*---------------------------------------------------------------------------*/
1071 * Registers the provided function as a handler for the given signal name
1072 * and stores the signal id returned so that the function may be
1073 * de-registered later.
1076 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
1080 id = atk_add_global_event_listener (listener, signal_name);
1082 if (id > 0) /* id == 0 is a failure */
1083 g_array_append_val (listener_ids, id);
1089 * Initialization for the signal handlers.
1091 * Registers all required signal handlers.
1094 spi_atk_register_event_listeners (void)
1097 * Kludge to make sure the Atk interface types are registered, otherwise
1098 * the AtkText signal handlers below won't get registered
1100 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
1101 AtkObject *bo = atk_no_op_object_new (ao);
1104 g_object_unref (G_OBJECT (bo));
1105 g_object_unref (ao);
1109 g_warning ("atk_bridge: spi_atk-register_event_listeners called multiple times");
1113 /* Register for focus event notifications, and register app with central registry */
1114 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
1116 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
1118 add_signal_listener (property_event_listener,
1119 "Gtk:AtkObject:property-change");
1121 /* window events: we tentative try to register using the old format */
1122 id = add_signal_listener (window_event_listener, "window:create");
1126 /* If we are able to register using the old format, we assume
1127 * that the ATK implementor is managing window events without
1128 * AtkWindow. We can't use the opposite test because after
1129 * including AtkWindow on ATK you would be able to register to
1130 * that event, although the ATK implementor could or not use it.
1133 add_signal_listener (window_event_listener, "window:destroy");
1134 add_signal_listener (window_event_listener, "window:minimize");
1135 add_signal_listener (window_event_listener, "window:maximize");
1136 add_signal_listener (window_event_listener, "window:restore");
1137 add_signal_listener (window_event_listener, "window:activate");
1138 add_signal_listener (window_event_listener, "window:deactivate");
1142 add_signal_listener (window_event_listener, "Atk:AtkWindow:create");
1143 add_signal_listener (window_event_listener, "Atk:AtkWindow:destroy");
1144 add_signal_listener (window_event_listener, "Atk:AtkWindow:minimize");
1145 add_signal_listener (window_event_listener, "Atk:AtkWindow:maximize");
1146 add_signal_listener (window_event_listener, "Atk:AtkWindow:restore");
1147 add_signal_listener (window_event_listener, "Atk:AtkWindow:activate");
1148 add_signal_listener (window_event_listener, "Atk:AtkWindow:deactivate");
1151 add_signal_listener (document_event_listener,
1152 "Gtk:AtkDocument:load-complete");
1153 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
1154 add_signal_listener (document_event_listener,
1155 "Gtk:AtkDocument:load-stopped");
1156 /* TODO Fake this event on the client side */
1157 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
1159 add_signal_listener (active_descendant_event_listener,
1160 "Gtk:AtkObject:active-descendant-changed");
1161 add_signal_listener (bounds_event_listener,
1162 "Gtk:AtkComponent:bounds-changed");
1163 add_signal_listener (text_selection_changed_event_listener,
1164 "Gtk:AtkText:text-selection-changed");
1165 add_signal_listener (text_changed_event_listener,
1166 "Gtk:AtkText:text-changed");
1167 add_signal_listener (text_insert_event_listener,
1168 "Gtk:AtkText:text-insert");
1169 add_signal_listener (text_remove_event_listener,
1170 "Gtk:AtkText:text-remove");
1171 add_signal_listener (link_selected_event_listener,
1172 "Gtk:AtkHypertext:link-selected");
1173 add_signal_listener (generic_event_listener,
1174 "Gtk:AtkObject:visible-data-changed");
1175 add_signal_listener (generic_event_listener,
1176 "Gtk:AtkSelection:selection-changed");
1177 add_signal_listener (generic_event_listener,
1178 "Gtk:AtkText:text-attributes-changed");
1179 add_signal_listener (generic_event_listener,
1180 "Gtk:AtkText:text-caret-moved");
1181 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1182 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1183 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1184 add_signal_listener (generic_event_listener,
1185 "Gtk:AtkTable:column-inserted");
1186 add_signal_listener (generic_event_listener,
1187 "Gtk:AtkTable:column-reordered");
1188 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1189 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1190 add_signal_listener (children_changed_event_listener, "Gtk:AtkObject:children-changed");
1193 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1194 "children-changed::add",
1195 (GCallback) toplevel_added_event_listener, NULL);
1197 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1198 "children-changed::remove",
1199 (GCallback) toplevel_removed_event_listener, NULL);
1203 * May add the following listeners to implement preemptive key listening for GTK+
1205 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1206 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1208 atk_bridge_key_event_listener_id =
1209 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1212 /*---------------------------------------------------------------------------*/
1215 * De-registers all ATK signal handlers.
1218 spi_atk_deregister_event_listeners (void)
1221 GArray *ids = listener_ids;
1222 listener_ids = NULL;
1224 if (atk_bridge_focus_tracker_id)
1226 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1227 atk_bridge_focus_tracker_id = 0;
1232 for (i = 0; i < ids->len; i++)
1234 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1236 g_array_free (ids, TRUE);
1239 if (atk_bridge_key_event_listener_id)
1241 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1242 atk_bridge_key_event_listener_id = 0;
1246 /*---------------------------------------------------------------------------*/
1249 * TODO This function seems out of place here.
1251 * Emits fake deactivate signals on all top-level windows.
1252 * Used when shutting down AT-SPI, ensuring that all
1253 * windows have been removed on the client side.
1256 spi_atk_tidy_windows (void)
1262 root = atk_get_root ();
1263 n_children = atk_object_get_n_accessible_children (root);
1264 for (i = 0; i < n_children; i++)
1267 AtkStateSet *stateset;
1270 child = atk_object_ref_accessible_child (root, i);
1271 stateset = atk_object_ref_state_set (child);
1273 name = atk_object_get_name (child);
1274 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1276 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1277 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1279 g_object_unref (stateset);
1281 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1282 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1283 g_object_unref (child);
1288 spi_event_is_subtype (gchar **needle, gchar **haystack)
1290 while (*haystack && **haystack)
1292 if (g_strcmp0 (*needle, *haystack))
1300 /*END------------------------------------------------------------------------*/