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;
104 closure.loop = g_main_loop_new (spi_global_app_data->main_context, FALSE);
105 closure.reply = NULL;
106 switch_main_context (spi_global_app_data->main_context);
108 if (!dbus_connection_send_with_reply (bus, message, &pending, 9000) || !pending)
110 switch_main_context (NULL);
113 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
114 source = g_timeout_source_new (500);
115 g_source_set_callback (source, timeout_reply, &closure, NULL);
116 closure.timeout = g_source_attach (source, spi_global_app_data->main_context);
117 g_source_unref (source);
118 g_main_loop_run (closure.loop);
119 if (closure.timeout != -1)
120 g_source_destroy (source);
122 g_main_loop_unref (closure.loop);
123 return closure.reply;
126 /*---------------------------------------------------------------------------*/
129 * Functionality related to sending device events from the application.
131 * This is used for forwarding key events on to the registry daemon.
135 Accessibility_DeviceEventController_NotifyListenersSync (const
139 DBusMessage *message;
140 dbus_bool_t consumed = FALSE;
143 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
145 ATSPI_DBUS_INTERFACE_DEC,
146 "NotifyListenersSync");
148 if (spi_dbus_marshal_deviceEvent (message, key_event))
151 send_and_allow_reentry (spi_global_app_data->bus, message);
155 dbus_error_init (&error);
156 if (!dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN,
157 &consumed, DBUS_TYPE_INVALID))
159 /* TODO: print a warning */
160 dbus_error_free (&error);
162 dbus_message_unref (reply);
165 dbus_message_unref (message);
170 spi_init_keystroke_from_atk_key_event (AtspiDeviceEvent * keystroke,
171 AtkKeyEventStruct * event)
173 keystroke->id = (dbus_int32_t) event->keyval;
174 keystroke->hw_code = (dbus_int16_t) event->keycode;
175 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
176 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
181 keystroke->event_string = g_strdup (event->string);
182 c = g_utf8_get_char_validated (event->string, -1);
183 if (c > 0 && g_unichar_isprint (c))
184 keystroke->is_text = TRUE;
186 keystroke->is_text = FALSE;
190 keystroke->event_string = g_strdup ("");
191 keystroke->is_text = FALSE;
195 case (ATK_KEY_EVENT_PRESS):
196 keystroke->type = ATSPI_KEY_PRESSED;
198 case (ATK_KEY_EVENT_RELEASE):
199 keystroke->type = ATSPI_KEY_RELEASED;
207 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
208 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
209 (int) keystroke->modifiers, keystroke->event_string,
210 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
216 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
219 AtspiDeviceEvent key_event;
221 spi_init_keystroke_from_atk_key_event (&key_event, event);
224 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
226 if (key_event.event_string)
227 g_free (key_event.event_string);
232 /*---------------------------------------------------------------------------*/
235 validate_for_dbus (const gint type,
240 case DBUS_TYPE_STRING:
241 case DBUS_TYPE_OBJECT_PATH:
244 else if (!g_utf8_validate (val, -1, NULL))
246 g_warning ("atk-bridge: Received bad UTF-8 string when emitting event");
257 append_basic (DBusMessageIter *iter,
263 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
265 val = validate_for_dbus ((int) *type, val);
266 dbus_message_iter_append_basic(&sub, (int) *type, &val);
268 dbus_message_iter_close_container(iter, &sub);
272 append_rect (DBusMessageIter *iter,
276 DBusMessageIter variant, sub;
277 const AtkRectangle *rect = (const AtkRectangle *) val;
279 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
281 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
283 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
284 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
285 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
286 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
288 dbus_message_iter_close_container (&variant, &sub);
290 dbus_message_iter_close_container(iter, &variant);
294 append_object (DBusMessageIter *iter,
298 spi_object_append_v_reference (iter, ATK_OBJECT (val));
302 signal_name_to_dbus (const gchar *s)
304 gchar *ret = g_strdup (s);
309 ret [0] = toupper (ret [0]);
310 while ((t = strchr (ret, '-')) != NULL)
312 memmove (t, t + 1, strlen (t));
319 * Converts names of the form "active-descendant-changed" to
320 * "ActiveDescendantChanged"
323 ensure_proper_format (const char *name)
325 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
327 gboolean need_upper = TRUE;
335 *p++ = toupper (*name);
338 else if (*name == '-')
340 else if (*name == ':')
354 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
358 gboolean ret = FALSE;
361 if (!spi_global_app_data->events_initialized)
364 data [0] = ensure_proper_format (klass + 21);
365 data [1] = ensure_proper_format (major);
366 data [2] = ensure_proper_format (minor);
369 /* Hack: Always pass events that update the cache.
370 * TODO: FOr 2.2, have at-spi2-core define a special "cache listener" for
371 * this instead, so that we don't send these if no one is listening */
372 if (!g_strcmp0 (data [1], "ChildrenChanged") ||
373 ((!g_strcmp0 (data [1], "PropertyChange")) &&
374 (!g_strcmp0 (data [2], "accessible-name") ||
375 !g_strcmp0 (data [2], "accessible-description") ||
376 !g_strcmp0 (data [2], "accessible-parent") ||
377 !g_strcmp0 (data [2], "accessible-role"))) ||
378 !g_strcmp0 (data [1], "StateChanged"))
386 /* Hack: events such as "object::text-changed::insert:system" as
387 generated by Gecko */
388 data [2][strcspn (data [2], ":")] = '\0';
389 for (list = spi_global_app_data->events; list; list = list->next)
392 if (spi_event_is_subtype (data, evdata->data))
400 g_print("event: %s %s %s: %d\n", data[0], data[1], data[2], ret);
408 /* Convert a : to a / so that listeners can use arg0path to match only
411 adapt_minor_for_dbus (const char *source)
413 gchar *ret = g_strdup (source);
414 int i = strcspn (ret, ":");
421 * Emits an AT-SPI event.
422 * AT-SPI events names are split into three parts:
424 * This is mapped onto D-Bus events as:
425 * D-Bus Interface:Signal Name:Detail argument
427 * Marshals a basic type into the 'any_data' attribute of
431 emit_event (AtkObject *obj,
435 dbus_int32_t detail1,
436 dbus_int32_t detail2,
439 void (*append_variant) (DBusMessageIter *, const char *, const void *))
441 DBusConnection *bus = spi_global_app_data->bus;
447 DBusMessageIter iter;
449 if (!klass) klass = "";
450 if (!major) major = "";
451 if (!minor) minor = "";
452 if (!type) type = "u";
454 if (!signal_is_needed (klass, major, minor))
457 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
458 g_return_if_fail (path != NULL);
461 * This is very annoying, but as '-' isn't a legal signal
462 * name in D-Bus (Why not??!?) The names need converting
463 * on this side, and again on the client side.
465 cname = signal_name_to_dbus (major);
466 sig = dbus_message_new_signal(path, klass, cname);
468 dbus_message_iter_init_append(sig, &iter);
470 minor_dbus = adapt_minor_for_dbus (minor);
471 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor_dbus);
473 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
474 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
475 append_variant (&iter, type, val);
476 spi_object_append_reference (&iter, spi_global_app_data->root);
478 dbus_connection_send(bus, sig, NULL);
479 dbus_message_unref(sig);
481 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
482 spi_object_lease_if_needed (G_OBJECT (obj));
488 /*---------------------------------------------------------------------------*/
491 * The focus listener handles the ATK 'focus' signal and forwards it
492 * as the AT-SPI event, 'focus:'
495 focus_tracker (AtkObject * accessible)
497 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
498 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
501 /*---------------------------------------------------------------------------*/
503 #define PCHANGE "PropertyChange"
506 * This handler handles the following ATK signals and
507 * converts them to AT-SPI events:
509 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
511 * The property-name is part of the ATK property-change signal.
514 property_event_listener (GSignalInvocationHint * signal_hint,
515 guint n_param_values,
516 const GValue * param_values, gpointer data)
518 AtkObject *accessible;
519 AtkPropertyValues *values;
521 const gchar *pname = NULL;
527 accessible = g_value_get_object (¶m_values[0]);
528 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
530 pname = values[0].property_name;
532 /* TODO Could improve this control statement by matching
533 * on only the end of the signal names,
535 if (strcmp (pname, "accessible-name") == 0)
537 s1 = atk_object_get_name (accessible);
539 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
540 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
542 else if (strcmp (pname, "accessible-description") == 0)
544 s1 = atk_object_get_description (accessible);
546 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
547 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
549 else if (strcmp (pname, "accessible-parent") == 0)
551 otemp = atk_object_get_parent (accessible);
553 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
554 "(so)", otemp, append_object);
556 else if (strcmp (pname, "accessible-role") == 0)
558 i = atk_object_get_role (accessible);
559 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
560 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
562 else if (strcmp (pname, "accessible-table-summary") == 0)
564 otemp = atk_table_get_summary (ATK_TABLE (accessible));
566 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
567 "(so)", otemp, append_object);
569 else if (strcmp (pname, "accessible-table-column-header") == 0)
571 i = g_value_get_int (&(values->new_value));
572 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
574 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
575 "(so)", otemp, append_object);
577 else if (strcmp (pname, "accessible-table-row-header") == 0)
579 i = g_value_get_int (&(values->new_value));
580 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
582 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
583 "(so)", otemp, append_object);
585 else if (strcmp (pname, "accessible-table-row-description") == 0)
587 i = g_value_get_int (&(values->new_value));
588 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
589 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
590 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
592 else if (strcmp (pname, "accessible-table-column-description") == 0)
594 i = g_value_get_int (&(values->new_value));
595 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
596 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
597 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
599 else if (strcmp (pname, "accessible-table-caption-object") == 0)
601 otemp = atk_table_get_caption (ATK_TABLE (accessible));
602 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
603 "(so)", otemp, append_object);
607 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
608 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
613 /*---------------------------------------------------------------------------*/
615 #define STATE_CHANGED "state-changed"
618 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
619 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
620 * the param-name is part of the ATK state-change signal.
623 state_event_listener (GSignalInvocationHint * signal_hint,
624 guint n_param_values,
625 const GValue * param_values, gpointer data)
627 AtkObject *accessible;
631 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
632 pname = g_value_get_string (¶m_values[1]);
634 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
635 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
636 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
638 if (!g_strcmp0 (pname, "defunct") && detail1)
639 spi_register_deregister_object (spi_global_register, G_OBJECT (accessible),
644 /*---------------------------------------------------------------------------*/
647 * The window event listener handles the following ATK signals and forwards
648 * them as AT-SPI events:
650 * window:create -> window:create
651 * window:destroy -> window:destroy
652 * window:minimize -> window:minimize
653 * window:maximize -> window:maximize
654 * window:activate -> window:activate
655 * window:deactivate -> window:deactivate
658 window_event_listener (GSignalInvocationHint * signal_hint,
659 guint n_param_values,
660 const GValue * param_values, gpointer data)
662 AtkObject *accessible;
663 GSignalQuery signal_query;
664 const gchar *name, *s;
666 g_signal_query (signal_hint->signal_id, &signal_query);
667 name = signal_query.signal_name;
669 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
670 s = atk_object_get_name (accessible);
671 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
672 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
677 /*---------------------------------------------------------------------------*/
680 * The document event listener handles the following ATK signals
681 * and converts them to AT-SPI events:
683 * Gtk:AtkDocument:load-complete -> document:load-complete
684 * Gtk:AtkDocument:load-stopped -> document:load-stopped
685 * Gtk:AtkDocument:reload -> document:reload
688 document_event_listener (GSignalInvocationHint * signal_hint,
689 guint n_param_values,
690 const GValue * param_values, gpointer data)
692 AtkObject *accessible;
693 GSignalQuery signal_query;
694 const gchar *name, *s;
696 g_signal_query (signal_hint->signal_id, &signal_query);
697 name = signal_query.signal_name;
699 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
700 s = atk_object_get_name (accessible);
701 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
702 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
707 /*---------------------------------------------------------------------------*/
710 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
711 * this to an AT-SPI event - "object:bounds-changed".
714 bounds_event_listener (GSignalInvocationHint * signal_hint,
715 guint n_param_values,
716 const GValue * param_values, gpointer data)
718 AtkObject *accessible;
719 AtkRectangle *atk_rect;
720 GSignalQuery signal_query;
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]));
728 if (G_VALUE_HOLDS_BOXED (param_values + 1))
730 atk_rect = g_value_get_boxed (param_values + 1);
732 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
733 "(iiii)", atk_rect, append_rect);
738 /*---------------------------------------------------------------------------*/
741 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
742 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
746 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
747 guint n_param_values,
748 const GValue * param_values, gpointer data)
750 AtkObject *accessible;
752 GSignalQuery signal_query;
756 g_signal_query (signal_hint->signal_id, &signal_query);
757 name = signal_query.signal_name;
759 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
760 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
761 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
763 detail1 = atk_object_get_index_in_parent (child);
765 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
766 "(so)", child, append_object);
770 /*---------------------------------------------------------------------------*/
773 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
774 * converts it to the AT-SPI signal - 'object:link-selected'
778 link_selected_event_listener (GSignalInvocationHint * signal_hint,
779 guint n_param_values,
780 const GValue * param_values, gpointer data)
782 AtkObject *accessible;
783 GSignalQuery signal_query;
784 const gchar *name, *minor;
787 g_signal_query (signal_hint->signal_id, &signal_query);
788 name = signal_query.signal_name;
790 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
791 minor = g_quark_to_string (signal_hint->detail);
793 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
794 detail1 = g_value_get_int (¶m_values[1]);
796 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
797 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
801 /*---------------------------------------------------------------------------*/
804 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
805 * converts it to the AT-SPI signal - 'object:text-changed'
806 * This signal is deprecated by Gtk:AtkText:text-insert
807 * and Gtk:AtkText:text-remove
811 text_changed_event_listener (GSignalInvocationHint * signal_hint,
812 guint n_param_values,
813 const GValue * param_values, gpointer data)
815 AtkObject *accessible;
816 GSignalQuery signal_query;
817 const gchar *name, *minor;
819 gint detail1 = 0, detail2 = 0;
821 g_signal_query (signal_hint->signal_id, &signal_query);
822 name = signal_query.signal_name;
824 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
825 minor = g_quark_to_string (signal_hint->detail);
827 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
828 detail1 = g_value_get_int (¶m_values[1]);
830 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
831 detail2 = g_value_get_int (¶m_values[2]);
834 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
836 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
837 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
844 * Handles the ATK signal 'Gtk:AtkText:text-insert' and
845 * converts it to the AT-SPI signal - 'object:text-changed'
849 text_insert_event_listener (GSignalInvocationHint * signal_hint,
850 guint n_param_values,
851 const GValue * param_values, gpointer data)
853 AtkObject *accessible;
854 guint text_changed_signal_id;
855 GSignalQuery signal_query;
857 const gchar *minor_raw, *text;
859 gint detail1 = 0, detail2 = 0;
861 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
862 /* Get signal name for 'Gtk:AtkText:text-changed' so
863 * we convert it to the AT-SPI signal - 'object:text-changed'
865 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
866 g_signal_query (text_changed_signal_id, &signal_query);
867 name = signal_query.signal_name;
870 /* Add the insert and keep any detail coming from atk */
871 minor_raw = g_quark_to_string (signal_hint->detail);
873 minor = g_strconcat ("insert:", minor_raw, NULL);
875 minor = g_strdup ("insert");
877 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
878 detail1 = g_value_get_int (¶m_values[1]);
880 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
881 detail2 = g_value_get_int (¶m_values[2]);
883 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
884 text = g_value_get_string (¶m_values[3]);
886 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
887 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
893 * Handles the ATK signal 'Gtk:AtkText:text-remove' and
894 * converts it to the AT-SPI signal - 'object:text-changed'
898 text_remove_event_listener (GSignalInvocationHint * signal_hint,
899 guint n_param_values,
900 const GValue * param_values, gpointer data)
902 AtkObject *accessible;
903 guint text_changed_signal_id;
904 GSignalQuery signal_query;
906 const gchar *minor_raw, *text;
908 gint detail1 = 0, detail2 = 0;
910 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
911 /* Get signal name for 'Gtk:AtkText:text-changed' so
912 * we convert it to the AT-SPI signal - 'object:text-changed'
914 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
915 g_signal_query (text_changed_signal_id, &signal_query);
916 name = signal_query.signal_name;
918 minor_raw = g_quark_to_string (signal_hint->detail);
920 /* Add the delete and keep any detail coming from atk */
922 minor = g_strconcat ("delete:", minor_raw, NULL);
924 minor = g_strdup ("delete");
926 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
927 detail1 = g_value_get_int (¶m_values[1]);
929 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
930 detail2 = g_value_get_int (¶m_values[2]);
932 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
933 text = g_value_get_string (¶m_values[3]);
935 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
936 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
942 /*---------------------------------------------------------------------------*/
945 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
946 * converts it to the AT-SPI signal - 'object:text-selection-changed'
950 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
951 guint n_param_values,
952 const GValue * param_values,
955 AtkObject *accessible;
956 GSignalQuery signal_query;
957 const gchar *name, *minor;
958 gint detail1 = 0, detail2 = 0;
960 g_signal_query (signal_hint->signal_id, &signal_query);
961 name = signal_query.signal_name;
963 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
964 minor = g_quark_to_string (signal_hint->detail);
966 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
967 detail1 = g_value_get_int (¶m_values[1]);
969 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
970 detail2 = g_value_get_int (¶m_values[2]);
972 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
973 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
977 /*---------------------------------------------------------------------------*/
980 * Children changed signal converter and forwarder.
982 * Klass (Interface) org.a11y.atspi.Event.Object
983 * Major is the signal name.
984 * Minor is 'add' or 'remove'
985 * detail1 is the index.
987 * any_data is the child reference.
990 children_changed_event_listener (GSignalInvocationHint * signal_hint,
991 guint n_param_values,
992 const GValue * param_values, gpointer data)
994 GSignalQuery signal_query;
995 const gchar *name, *minor;
996 gint detail1 = 0, detail2 = 0;
998 AtkObject *accessible, *ao=NULL;
1001 g_signal_query (signal_hint->signal_id, &signal_query);
1002 name = signal_query.signal_name;
1004 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1005 minor = g_quark_to_string (signal_hint->detail);
1007 detail1 = g_value_get_uint (param_values + 1);
1008 child = g_value_get_pointer (param_values + 2);
1010 if (ATK_IS_OBJECT (child))
1012 ao = ATK_OBJECT (child);
1013 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1014 "(so)", ao, append_object);
1016 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
1018 ao = atk_object_ref_accessible_child (accessible,
1020 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1021 "(so)", ao, append_object);
1022 g_object_unref (ao);
1026 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1027 "(so)", ao, append_object);
1033 /*---------------------------------------------------------------------------*/
1036 * Generic signal converter and forwarder.
1038 * Klass (Interface) org.a11y.atspi.Event.Object
1039 * Major is the signal name.
1046 generic_event_listener (GSignalInvocationHint * signal_hint,
1047 guint n_param_values,
1048 const GValue * param_values, gpointer data)
1050 AtkObject *accessible;
1051 GSignalQuery signal_query;
1053 int detail1 = 0, detail2 = 0;
1055 g_signal_query (signal_hint->signal_id, &signal_query);
1056 name = signal_query.signal_name;
1058 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1060 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
1061 detail1 = g_value_get_int (¶m_values[1]);
1063 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
1064 detail2 = g_value_get_int (¶m_values[2]);
1066 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
1067 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
1071 /*---------------------------------------------------------------------------*/
1074 * Registers the provided function as a handler for the given signal name
1075 * and stores the signal id returned so that the function may be
1076 * de-registered later.
1079 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
1083 id = atk_add_global_event_listener (listener, signal_name);
1085 if (id > 0) /* id == 0 is a failure */
1086 g_array_append_val (listener_ids, id);
1092 * Initialization for the signal handlers.
1094 * Registers all required signal handlers.
1097 spi_atk_register_event_listeners (void)
1100 * Kludge to make sure the Atk interface types are registered, otherwise
1101 * the AtkText signal handlers below won't get registered
1103 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
1104 AtkObject *bo = atk_no_op_object_new (ao);
1107 g_object_unref (G_OBJECT (bo));
1108 g_object_unref (ao);
1112 g_warning ("atk_bridge: spi_atk-register_event_listeners called multiple times");
1116 /* Register for focus event notifications, and register app with central registry */
1117 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
1119 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
1121 add_signal_listener (property_event_listener,
1122 "Gtk:AtkObject:property-change");
1124 /* window events: we tentative try to register using the old format */
1125 id = add_signal_listener (window_event_listener, "window:create");
1129 /* If we are able to register using the old format, we assume
1130 * that the ATK implementor is managing window events without
1131 * AtkWindow. We can't use the opposite test because after
1132 * including AtkWindow on ATK you would be able to register to
1133 * that event, although the ATK implementor could or not use it.
1136 add_signal_listener (window_event_listener, "window:destroy");
1137 add_signal_listener (window_event_listener, "window:minimize");
1138 add_signal_listener (window_event_listener, "window:maximize");
1139 add_signal_listener (window_event_listener, "window:restore");
1140 add_signal_listener (window_event_listener, "window:activate");
1141 add_signal_listener (window_event_listener, "window:deactivate");
1145 add_signal_listener (window_event_listener, "Atk:AtkWindow:create");
1146 add_signal_listener (window_event_listener, "Atk:AtkWindow:destroy");
1147 add_signal_listener (window_event_listener, "Atk:AtkWindow:minimize");
1148 add_signal_listener (window_event_listener, "Atk:AtkWindow:maximize");
1149 add_signal_listener (window_event_listener, "Atk:AtkWindow:restore");
1150 add_signal_listener (window_event_listener, "Atk:AtkWindow:activate");
1151 add_signal_listener (window_event_listener, "Atk:AtkWindow:deactivate");
1154 add_signal_listener (document_event_listener,
1155 "Gtk:AtkDocument:load-complete");
1156 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
1157 add_signal_listener (document_event_listener,
1158 "Gtk:AtkDocument:load-stopped");
1159 /* TODO Fake this event on the client side */
1160 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
1162 add_signal_listener (active_descendant_event_listener,
1163 "Gtk:AtkObject:active-descendant-changed");
1164 add_signal_listener (bounds_event_listener,
1165 "Gtk:AtkComponent:bounds-changed");
1166 add_signal_listener (text_selection_changed_event_listener,
1167 "Gtk:AtkText:text-selection-changed");
1168 add_signal_listener (text_changed_event_listener,
1169 "Gtk:AtkText:text-changed");
1170 add_signal_listener (text_insert_event_listener,
1171 "Gtk:AtkText:text-insert");
1172 add_signal_listener (text_remove_event_listener,
1173 "Gtk:AtkText:text-remove");
1174 add_signal_listener (link_selected_event_listener,
1175 "Gtk:AtkHypertext:link-selected");
1176 add_signal_listener (generic_event_listener,
1177 "Gtk:AtkObject:visible-data-changed");
1178 add_signal_listener (generic_event_listener,
1179 "Gtk:AtkSelection:selection-changed");
1180 add_signal_listener (generic_event_listener,
1181 "Gtk:AtkText:text-attributes-changed");
1182 add_signal_listener (generic_event_listener,
1183 "Gtk:AtkText:text-caret-moved");
1184 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1185 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1186 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1187 add_signal_listener (generic_event_listener,
1188 "Gtk:AtkTable:column-inserted");
1189 add_signal_listener (generic_event_listener,
1190 "Gtk:AtkTable:column-reordered");
1191 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1192 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1193 add_signal_listener (children_changed_event_listener, "Gtk:AtkObject:children-changed");
1196 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1197 "children-changed::add",
1198 (GCallback) toplevel_added_event_listener, NULL);
1200 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1201 "children-changed::remove",
1202 (GCallback) toplevel_removed_event_listener, NULL);
1206 * May add the following listeners to implement preemptive key listening for GTK+
1208 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1209 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1211 atk_bridge_key_event_listener_id =
1212 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1215 /*---------------------------------------------------------------------------*/
1218 * De-registers all ATK signal handlers.
1221 spi_atk_deregister_event_listeners (void)
1224 GArray *ids = listener_ids;
1225 listener_ids = NULL;
1227 if (atk_bridge_focus_tracker_id)
1229 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1230 atk_bridge_focus_tracker_id = 0;
1235 for (i = 0; i < ids->len; i++)
1237 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1239 g_array_free (ids, TRUE);
1242 if (atk_bridge_key_event_listener_id)
1244 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1245 atk_bridge_key_event_listener_id = 0;
1249 /*---------------------------------------------------------------------------*/
1252 * TODO This function seems out of place here.
1254 * Emits fake deactivate signals on all top-level windows.
1255 * Used when shutting down AT-SPI, ensuring that all
1256 * windows have been removed on the client side.
1259 spi_atk_tidy_windows (void)
1265 root = atk_get_root ();
1266 n_children = atk_object_get_n_accessible_children (root);
1267 for (i = 0; i < n_children; i++)
1270 AtkStateSet *stateset;
1273 child = atk_object_ref_accessible_child (root, i);
1274 stateset = atk_object_ref_state_set (child);
1276 name = atk_object_get_name (child);
1277 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1279 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1280 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1282 g_object_unref (stateset);
1284 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1285 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1286 g_object_unref (child);
1291 spi_event_is_subtype (gchar **needle, gchar **haystack)
1293 while (*haystack && **haystack)
1295 if (g_strcmp0 (*needle, *haystack))
1303 /*END------------------------------------------------------------------------*/