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.
29 #include <droute/droute.h>
30 #include <atspi/atspi.h>
33 #include "accessible-register.h"
35 #include "common/spi-dbus.h"
39 static GArray *listener_ids = NULL;
41 static gint atk_bridge_key_event_listener_id;
42 static gint atk_bridge_focus_tracker_id;
44 /*---------------------------------------------------------------------------*/
46 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
47 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
48 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
49 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
51 /*---------------------------------------------------------------------------*/
53 typedef struct _SpiReentrantCallClosure
57 } SpiReentrantCallClosure;
60 switch_main_context (GMainContext *cnx)
65 atspi_dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
67 atspi_dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
68 for (list = spi_global_app_data->direct_connections; list; list = list->next)
69 atspi_dbus_connection_setup_with_g_main (list->data, cnx);
73 set_reply (DBusPendingCall * pending, void *user_data)
75 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
77 closure->reply = dbus_pending_call_steal_reply (pending);
78 dbus_pending_call_unref (pending);
79 switch_main_context (NULL);
80 g_main_loop_quit (closure->loop);
84 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
86 DBusPendingCall *pending;
87 SpiReentrantCallClosure closure;
88 GMainContext *main_context;
90 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
91 spi_global_app_data->main_context);
92 closure.loop = g_main_loop_new (main_context, FALSE);
93 switch_main_context (main_context);
95 if (!dbus_connection_send_with_reply (bus, message, &pending, -1) || !pending)
97 switch_main_context (NULL);
100 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
101 g_main_loop_run (closure.loop);
103 g_main_loop_unref (closure.loop);
104 return closure.reply;
107 /*---------------------------------------------------------------------------*/
110 * Functionality related to sending device events from the application.
112 * This is used for forwarding key events on to the registry daemon.
116 Accessibility_DeviceEventController_NotifyListenersSync (const
117 Accessibility_DeviceEvent
120 DBusMessage *message;
122 dbus_bool_t consumed = FALSE;
125 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
127 SPI_DBUS_INTERFACE_DEC,
128 "NotifyListenersSync");
130 dbus_error_init (&error);
131 if (spi_dbus_marshal_deviceEvent (message, key_event))
134 send_and_allow_reentry (spi_global_app_data->bus, message);
138 dbus_error_init (&error);
139 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
141 dbus_message_unref (reply);
144 dbus_message_unref (message);
149 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
150 AtkKeyEventStruct * event)
152 keystroke->id = (dbus_int32_t) event->keyval;
153 keystroke->hw_code = (dbus_int16_t) event->keycode;
154 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
155 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
160 keystroke->event_string = g_strdup (event->string);
161 c = g_utf8_get_char_validated (event->string, -1);
162 if (c > 0 && g_unichar_isprint (c))
163 keystroke->is_text = TRUE;
165 keystroke->is_text = FALSE;
169 keystroke->event_string = g_strdup ("");
170 keystroke->is_text = FALSE;
174 case (ATK_KEY_EVENT_PRESS):
175 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
177 case (ATK_KEY_EVENT_RELEASE):
178 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
186 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
187 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
188 (int) keystroke->modifiers, keystroke->event_string,
189 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
195 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
198 Accessibility_DeviceEvent key_event;
200 spi_init_keystroke_from_atk_key_event (&key_event, event);
203 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
205 if (key_event.event_string)
206 g_free (key_event.event_string);
211 /*---------------------------------------------------------------------------*/
214 convert_signal_name (const gchar * s)
216 gchar *ret = g_strdup (s);
221 ret[0] = toupper (ret[0]);
222 while ((t = strchr (ret, '-')) != NULL)
224 memmove (t, t + 1, strlen (t));
231 replace_null (const gint type,
236 case DBUS_TYPE_STRING:
237 case DBUS_TYPE_OBJECT_PATH:
248 append_basic (DBusMessageIter *iter,
254 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
256 val = replace_null ((int) *type, val);
257 dbus_message_iter_append_basic(&sub, (int) *type, &val);
259 dbus_message_iter_close_container(iter, &sub);
263 append_rect (DBusMessageIter *iter,
267 DBusMessageIter variant, sub;
268 const AtkRectangle *rect = (const AtkRectangle *) val;
270 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
272 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
274 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
275 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
276 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
277 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
279 dbus_message_iter_close_container (&variant, &sub);
281 dbus_message_iter_close_container(iter, &variant);
285 append_object (DBusMessageIter *iter,
289 spi_object_append_v_reference (iter, ATK_OBJECT (val));
293 signal_name_to_dbus (const gchar *s)
295 gchar *ret = g_strdup (s);
300 ret [0] = toupper (ret [0]);
301 while ((t = strchr (ret, '-')) != NULL)
303 memmove (t, t + 1, strlen (t));
310 * Converts names of the form "active-descendant-changed" to
311 * "ActiveDescendantChanged"
314 ensure_proper_format (const char *name)
316 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
318 gboolean need_upper = TRUE;
326 *p++ = toupper (*name);
329 else if (*name == '-')
331 else if (*name == ':')
345 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
350 gboolean ret = FALSE;
353 if (!spi_global_app_data->events_initialized)
356 data [0] = ensure_proper_format (klass + 21);
357 data [1] = ensure_proper_format (major);
358 data [2] = ensure_proper_format (minor);
361 /* Hack: events such as "object::text-changed::insert:system" as
362 generated by Gecko */
363 data [2][strcspn (data [2], ":")] = '\0';
364 for (list = spi_global_app_data->events; list; list = list->next)
367 if (spi_event_is_subtype (data, evdata->data))
374 //printf("event: %s %s %s: %d\n", data[0], data[1], data[2], ret);
382 * Emits an AT-SPI event.
383 * AT-SPI events names are split into three parts:
385 * This is mapped onto D-Bus events as:
386 * D-Bus Interface:Signal Name:Detail argument
388 * Marshals a basic type into the 'any_data' attribute of
392 emit_event (AtkObject *obj,
396 dbus_int32_t detail1,
397 dbus_int32_t detail2,
400 void (*append_variant) (DBusMessageIter *, const char *, const void *))
402 DBusConnection *bus = spi_global_app_data->bus;
407 DBusMessageIter iter, iter_struct;
409 if (!klass) klass = "";
410 if (!major) major = "";
411 if (!minor) minor = "";
412 if (!type) type = "u";
414 if (!signal_is_needed (klass, major, minor))
417 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
420 * This is very annoying, but as '-' isn't a legal signal
421 * name in D-Bus (Why not??!?) The names need converting
422 * on this side, and again on the client side.
424 cname = signal_name_to_dbus (major);
425 sig = dbus_message_new_signal(path, klass, cname);
427 dbus_message_iter_init_append(sig, &iter);
429 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
430 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
431 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
432 append_variant (&iter, type, val);
433 spi_object_append_reference (&iter, spi_global_app_data->root);
435 dbus_connection_send(bus, sig, NULL);
436 dbus_message_unref(sig);
438 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
439 spi_object_lease_if_needed (G_OBJECT (obj));
445 /*---------------------------------------------------------------------------*/
448 * The focus listener handles the ATK 'focus' signal and forwards it
449 * as the AT-SPI event, 'focus:'
452 focus_tracker (AtkObject * accessible)
454 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
455 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
458 /*---------------------------------------------------------------------------*/
460 #define PCHANGE "PropertyChange"
463 * This handler handles the following ATK signals and
464 * converts them to AT-SPI events:
466 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
468 * The property-name is part of the ATK property-change signal.
471 property_event_listener (GSignalInvocationHint * signal_hint,
472 guint n_param_values,
473 const GValue * param_values, gpointer data)
475 AtkObject *accessible;
476 AtkPropertyValues *values;
478 const gchar *pname = NULL;
484 accessible = g_value_get_object (¶m_values[0]);
485 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
487 pname = values[0].property_name;
489 /* TODO Could improve this control statement by matching
490 * on only the end of the signal names,
492 if (strcmp (pname, "accessible-name") == 0)
494 s1 = atk_object_get_name (accessible);
496 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
497 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
499 else if (strcmp (pname, "accessible-description") == 0)
501 s1 = atk_object_get_description (accessible);
503 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
504 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
506 else if (strcmp (pname, "accessible-parent") == 0)
508 otemp = atk_object_get_parent (accessible);
510 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
511 "(so)", otemp, append_object);
513 else if (strcmp (pname, "accessible-role") == 0)
515 i = atk_object_get_role (accessible);
516 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
517 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
519 else if (strcmp (pname, "accessible-table-summary") == 0)
521 otemp = atk_table_get_summary (ATK_TABLE (accessible));
523 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
524 "(so)", otemp, append_object);
526 else if (strcmp (pname, "accessible-table-column-header") == 0)
528 i = g_value_get_int (&(values->new_value));
529 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
531 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
532 "(so)", otemp, append_object);
534 else if (strcmp (pname, "accessible-table-row-header") == 0)
536 i = g_value_get_int (&(values->new_value));
537 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
539 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
540 "(so)", otemp, append_object);
542 else if (strcmp (pname, "accessible-table-row-description") == 0)
544 i = g_value_get_int (&(values->new_value));
545 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
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-table-column-description") == 0)
551 i = g_value_get_int (&(values->new_value));
552 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
553 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
554 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
556 else if (strcmp (pname, "accessible-table-caption-object") == 0)
558 otemp = atk_table_get_caption (ATK_TABLE (accessible));
559 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
560 "(so)", otemp, append_object);
564 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
565 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
570 /*---------------------------------------------------------------------------*/
572 #define STATE_CHANGED "state-changed"
575 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
576 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
577 * the param-name is part of the ATK state-change signal.
580 state_event_listener (GSignalInvocationHint * signal_hint,
581 guint n_param_values,
582 const GValue * param_values, gpointer data)
584 AtkObject *accessible;
588 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
589 pname = g_strdup (g_value_get_string (¶m_values[1]));
591 /* TODO - Possibly ignore a change to the 'defunct' state.
592 * This is because without reference counting defunct objects should be removed.
594 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
595 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
596 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
601 /*---------------------------------------------------------------------------*/
604 * The window event listener handles the following ATK signals and forwards
605 * them as AT-SPI events:
607 * window:create -> window:create
608 * window:destroy -> window:destroy
609 * window:minimize -> window:minimize
610 * window:maximize -> window:maximize
611 * window:activate -> window:activate
612 * window:deactivate -> window:deactivate
615 window_event_listener (GSignalInvocationHint * signal_hint,
616 guint n_param_values,
617 const GValue * param_values, gpointer data)
619 AtkObject *accessible;
620 GSignalQuery signal_query;
621 const gchar *name, *s;
623 g_signal_query (signal_hint->signal_id, &signal_query);
624 name = signal_query.signal_name;
626 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
627 s = atk_object_get_name (accessible);
628 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
629 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
634 /*---------------------------------------------------------------------------*/
637 * The document event listener handles the following ATK signals
638 * and converts them to AT-SPI events:
640 * Gtk:AtkDocument:load-complete -> document:load-complete
641 * Gtk:AtkDocument:load-stopped -> document:load-stopped
642 * Gtk:AtkDocument:reload -> document:reload
645 document_event_listener (GSignalInvocationHint * signal_hint,
646 guint n_param_values,
647 const GValue * param_values, gpointer data)
649 AtkObject *accessible;
650 GSignalQuery signal_query;
651 const gchar *name, *s;
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 s = atk_object_get_name (accessible);
658 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
659 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
664 /*---------------------------------------------------------------------------*/
667 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
668 * this to an AT-SPI event - "object:bounds-changed".
671 bounds_event_listener (GSignalInvocationHint * signal_hint,
672 guint n_param_values,
673 const GValue * param_values, gpointer data)
675 AtkObject *accessible;
676 AtkRectangle *atk_rect;
677 GSignalQuery signal_query;
678 const gchar *name, *s;
680 g_signal_query (signal_hint->signal_id, &signal_query);
681 name = signal_query.signal_name;
683 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
685 if (G_VALUE_HOLDS_BOXED (param_values + 1))
687 atk_rect = g_value_get_boxed (param_values + 1);
689 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
690 "(iiii)", atk_rect, append_rect);
695 /*---------------------------------------------------------------------------*/
698 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
699 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
703 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
704 guint n_param_values,
705 const GValue * param_values, gpointer data)
707 AtkObject *accessible;
709 GSignalQuery signal_query;
710 const gchar *name, *minor;
713 g_signal_query (signal_hint->signal_id, &signal_query);
714 name = signal_query.signal_name;
716 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
717 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
718 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
719 minor = g_quark_to_string (signal_hint->detail);
721 detail1 = atk_object_get_index_in_parent (child);
723 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
724 "(so)", child, append_object);
728 /*---------------------------------------------------------------------------*/
731 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
732 * converts it to the AT-SPI signal - 'object:link-selected'
736 link_selected_event_listener (GSignalInvocationHint * signal_hint,
737 guint n_param_values,
738 const GValue * param_values, gpointer data)
740 AtkObject *accessible;
741 GSignalQuery signal_query;
742 const gchar *name, *minor;
745 g_signal_query (signal_hint->signal_id, &signal_query);
746 name = signal_query.signal_name;
748 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
749 minor = g_quark_to_string (signal_hint->detail);
751 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
752 detail1 = g_value_get_int (¶m_values[1]);
754 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
755 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
759 /*---------------------------------------------------------------------------*/
762 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
763 * converts it to the AT-SPI signal - 'object:text-changed'
764 * This signal is deprecated by Gtk:AtkText:text-insert
765 * and Gtk:AtkText:text-remove
769 text_changed_event_listener (GSignalInvocationHint * signal_hint,
770 guint n_param_values,
771 const GValue * param_values, gpointer data)
773 AtkObject *accessible;
774 GSignalQuery signal_query;
775 const gchar *name, *minor;
777 gint detail1, detail2;
779 g_signal_query (signal_hint->signal_id, &signal_query);
780 name = signal_query.signal_name;
782 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
783 minor = g_quark_to_string (signal_hint->detail);
785 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
786 detail1 = g_value_get_int (¶m_values[1]);
788 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
789 detail2 = g_value_get_int (¶m_values[2]);
792 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
794 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
795 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
802 * Handles the ATK signal 'Gtk:AtkText:text-insert' and
803 * converts it to the AT-SPI signal - 'object:text-changed'
807 text_insert_event_listener (GSignalInvocationHint * signal_hint,
808 guint n_param_values,
809 const GValue * param_values, gpointer data)
811 AtkObject *accessible;
812 guint text_changed_signal_id;
813 GSignalQuery signal_query;
816 gint detail1, detail2;
818 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
819 /* Get signal name for 'Gtk:AtkText:text-changed' so
820 * we convert it to the AT-SPI signal - 'object:text-changed'
822 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
823 g_signal_query (text_changed_signal_id, &signal_query);
824 name = signal_query.signal_name;
827 /* Add the insert and keep any detail coming from atk */
828 minor = g_quark_to_string (signal_hint->detail);
830 minor = g_strconcat ("insert:", minor, NULL);
832 minor = g_strdup ("insert");
834 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
835 detail1 = g_value_get_int (¶m_values[1]);
837 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
838 detail2 = g_value_get_int (¶m_values[2]);
840 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
841 text = g_value_get_string (¶m_values[3]);
843 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
844 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
850 * Handles the ATK signal 'Gtk:AtkText:text-remove' and
851 * converts it to the AT-SPI signal - 'object:text-changed'
855 text_remove_event_listener (GSignalInvocationHint * signal_hint,
856 guint n_param_values,
857 const GValue * param_values, gpointer data)
859 AtkObject *accessible;
860 guint text_changed_signal_id;
861 GSignalQuery signal_query;
864 gint detail1, detail2;
866 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
867 /* Get signal name for 'Gtk:AtkText:text-changed' so
868 * we convert it to the AT-SPI signal - 'object:text-changed'
870 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
871 g_signal_query (text_changed_signal_id, &signal_query);
872 name = signal_query.signal_name;
874 minor = g_quark_to_string (signal_hint->detail);
876 /* Add the delete and keep any detail coming from atk */
877 minor = g_quark_to_string (signal_hint->detail);
879 minor = g_strconcat ("delete:", minor, NULL);
881 minor = g_strdup ("delete");
883 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
884 detail1 = g_value_get_int (¶m_values[1]);
886 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
887 detail2 = g_value_get_int (¶m_values[2]);
889 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
890 text = g_value_get_string (¶m_values[3]);
892 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
893 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
899 /*---------------------------------------------------------------------------*/
902 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
903 * converts it to the AT-SPI signal - 'object:text-selection-changed'
907 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
908 guint n_param_values,
909 const GValue * param_values,
912 AtkObject *accessible;
913 GSignalQuery signal_query;
914 const gchar *name, *minor;
915 gint detail1, detail2;
917 g_signal_query (signal_hint->signal_id, &signal_query);
918 name = signal_query.signal_name;
920 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
921 minor = g_quark_to_string (signal_hint->detail);
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 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
930 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
934 /*---------------------------------------------------------------------------*/
937 * Children changed signal converter and forwarder.
939 * Klass (Interface) org.a11y.atspi.Event.Object
940 * Major is the signal name.
941 * Minor is 'add' or 'remove'
942 * detail1 is the index.
944 * any_data is the child reference.
947 children_changed_event_listener (GSignalInvocationHint * signal_hint,
948 guint n_param_values,
949 const GValue * param_values, gpointer data)
951 GSignalQuery signal_query;
952 const gchar *name, *minor;
953 gint detail1, detail2 = 0;
955 AtkObject *accessible, *ao=NULL;
958 g_signal_query (signal_hint->signal_id, &signal_query);
959 name = signal_query.signal_name;
961 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
962 minor = g_quark_to_string (signal_hint->detail);
964 detail1 = g_value_get_uint (param_values + 1);
965 child = g_value_get_pointer (param_values + 2);
967 if (ATK_IS_OBJECT (child))
969 ao = ATK_OBJECT (child);
970 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
971 "(so)", ao, append_object);
973 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
975 ao = atk_object_ref_accessible_child (accessible,
977 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
978 "(so)", ao, append_object);
982 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
983 "(so)", ao, append_object);
989 /*---------------------------------------------------------------------------*/
992 toplevel_added_event_listener (AtkObject * accessible,
993 guint index, AtkObject * child)
995 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
996 "(so)", child, append_object);
1000 toplevel_removed_event_listener (AtkObject * accessible,
1001 guint index, AtkObject * child)
1003 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
1004 "(so)", child, append_object);
1007 /*---------------------------------------------------------------------------*/
1010 * Generic signal converter and forwarder.
1012 * Klass (Interface) org.a11y.atspi.Event.Object
1013 * Major is the signal name.
1020 generic_event_listener (GSignalInvocationHint * signal_hint,
1021 guint n_param_values,
1022 const GValue * param_values, gpointer data)
1024 AtkObject *accessible;
1025 GSignalQuery signal_query;
1027 int detail1 = 0, detail2 = 0;
1029 g_signal_query (signal_hint->signal_id, &signal_query);
1030 name = signal_query.signal_name;
1032 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1034 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
1035 detail1 = g_value_get_int (¶m_values[1]);
1037 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
1038 detail2 = g_value_get_int (¶m_values[2]);
1040 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
1041 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
1045 /*---------------------------------------------------------------------------*/
1048 * Registers the provided function as a handler for the given signal name
1049 * and stores the signal id returned so that the function may be
1050 * de-registered later.
1053 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
1057 id = atk_add_global_event_listener (listener, signal_name);
1058 g_array_append_val (listener_ids, id);
1062 * Initialization for the signal handlers.
1064 * Registers all required signal handlers.
1067 spi_atk_register_event_listeners (void)
1070 * Kludge to make sure the Atk interface types are registered, otherwise
1071 * the AtkText signal handlers below won't get registered
1073 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
1074 AtkObject *bo = atk_no_op_object_new (ao);
1076 g_object_unref (G_OBJECT (bo));
1077 g_object_unref (ao);
1079 /* Register for focus event notifications, and register app with central registry */
1080 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
1082 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
1084 add_signal_listener (property_event_listener,
1085 "Gtk:AtkObject:property-change");
1086 add_signal_listener (window_event_listener, "window:create");
1087 add_signal_listener (window_event_listener, "window:destroy");
1088 add_signal_listener (window_event_listener, "window:minimize");
1089 add_signal_listener (window_event_listener, "window:maximize");
1090 add_signal_listener (window_event_listener, "window:restore");
1091 add_signal_listener (window_event_listener, "window:activate");
1092 add_signal_listener (window_event_listener, "window:deactivate");
1093 add_signal_listener (document_event_listener,
1094 "Gtk:AtkDocument:load-complete");
1095 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
1096 add_signal_listener (document_event_listener,
1097 "Gtk:AtkDocument:load-stopped");
1098 /* TODO Fake this event on the client side */
1099 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
1101 add_signal_listener (active_descendant_event_listener,
1102 "Gtk:AtkObject:active-descendant-changed");
1103 add_signal_listener (bounds_event_listener,
1104 "Gtk:AtkComponent:bounds-changed");
1105 add_signal_listener (text_selection_changed_event_listener,
1106 "Gtk:AtkText:text-selection-changed");
1107 add_signal_listener (text_changed_event_listener,
1108 "Gtk:AtkText:text-changed");
1109 add_signal_listener (text_insert_event_listener,
1110 "Gtk:AtkText:text-insert");
1111 add_signal_listener (text_remove_event_listener,
1112 "Gtk:AtkText:text-remove");
1113 add_signal_listener (link_selected_event_listener,
1114 "Gtk:AtkHypertext:link-selected");
1115 add_signal_listener (generic_event_listener,
1116 "Gtk:AtkObject:visible-data-changed");
1117 add_signal_listener (generic_event_listener,
1118 "Gtk:AtkSelection:selection-changed");
1119 add_signal_listener (generic_event_listener,
1120 "Gtk:AtkText:text-attributes-changed");
1121 add_signal_listener (generic_event_listener,
1122 "Gtk:AtkText:text-caret-moved");
1123 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1124 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1125 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1126 add_signal_listener (generic_event_listener,
1127 "Gtk:AtkTable:column-inserted");
1128 add_signal_listener (generic_event_listener,
1129 "Gtk:AtkTable:column-reordered");
1130 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1131 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1133 /* Children signal listeners */
1134 atk_add_global_event_listener (children_changed_event_listener,
1135 "Gtk:AtkObject:children-changed");
1138 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1139 "children-changed::add",
1140 (GCallback) toplevel_added_event_listener, NULL);
1142 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1143 "children-changed::remove",
1144 (GCallback) toplevel_removed_event_listener, NULL);
1148 * May add the following listeners to implement preemptive key listening for GTK+
1150 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1151 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1153 atk_bridge_key_event_listener_id =
1154 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1157 /*---------------------------------------------------------------------------*/
1160 * De-registers all ATK signal handlers.
1163 spi_atk_deregister_event_listeners (void)
1166 GArray *ids = listener_ids;
1167 listener_ids = NULL;
1169 if (atk_bridge_focus_tracker_id)
1170 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1172 for (i = 0; ids && i < ids->len; i++)
1174 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1177 if (atk_bridge_key_event_listener_id)
1178 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1181 /*---------------------------------------------------------------------------*/
1184 * TODO This function seems out of place here.
1186 * Emits fake deactivate signals on all top-level windows.
1187 * Used when shutting down AT-SPI, ensuring that all
1188 * windows have been removed on the client side.
1191 spi_atk_tidy_windows (void)
1197 root = atk_get_root ();
1198 n_children = atk_object_get_n_accessible_children (root);
1199 for (i = 0; i < n_children; i++)
1202 AtkStateSet *stateset;
1205 child = atk_object_ref_accessible_child (root, i);
1206 stateset = atk_object_ref_state_set (child);
1208 name = atk_object_get_name (child);
1209 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1211 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1212 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1214 g_object_unref (stateset);
1216 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1217 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1218 g_object_unref (child);
1223 spi_event_is_subtype (gchar **needle, gchar **haystack)
1225 while (*haystack && **haystack)
1227 if (g_strcmp0 (*needle, *haystack))
1235 /*END------------------------------------------------------------------------*/