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>
32 #include "accessible-register.h"
34 #include "common/spi-dbus.h"
37 #include "dbus/dbus-glib-lowlevel.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)
62 /* This code won't work on dbus-glib earlier than 0.9.0 because of FDO#30574 */
63 if (spi_global_app_data->app_bus_addr [0] == '\0')
68 dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
69 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 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 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
88 DBusPendingCall *pending;
89 SpiReentrantCallClosure closure;
90 GMainContext *main_context;
92 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
93 spi_global_app_data->main_context);
94 closure.loop = g_main_loop_new (main_context, FALSE);
95 switch_main_context (main_context);
97 if (!dbus_connection_send_with_reply (bus, message, &pending, -1) || !pending)
99 switch_main_context (NULL);
102 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
103 g_main_loop_run (closure.loop);
105 g_main_loop_unref (closure.loop);
106 return closure.reply;
109 /*---------------------------------------------------------------------------*/
112 * Functionality related to sending device events from the application.
114 * This is used for forwarding key events on to the registry daemon.
118 Accessibility_DeviceEventController_NotifyListenersSync (const
119 Accessibility_DeviceEvent
122 DBusMessage *message;
124 dbus_bool_t consumed = FALSE;
127 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
129 SPI_DBUS_INTERFACE_DEC,
130 "NotifyListenersSync");
132 dbus_error_init (&error);
133 if (spi_dbus_marshal_deviceEvent (message, key_event))
136 send_and_allow_reentry (spi_global_app_data->bus, message);
140 dbus_error_init (&error);
141 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
143 dbus_message_unref (reply);
146 dbus_message_unref (message);
151 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
152 AtkKeyEventStruct * event)
154 keystroke->id = (dbus_int32_t) event->keyval;
155 keystroke->hw_code = (dbus_int16_t) event->keycode;
156 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
157 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
162 keystroke->event_string = g_strdup (event->string);
163 c = g_utf8_get_char_validated (event->string, -1);
164 if (c > 0 && g_unichar_isprint (c))
165 keystroke->is_text = TRUE;
167 keystroke->is_text = FALSE;
171 keystroke->event_string = g_strdup ("");
172 keystroke->is_text = FALSE;
176 case (ATK_KEY_EVENT_PRESS):
177 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
179 case (ATK_KEY_EVENT_RELEASE):
180 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
188 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
189 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
190 (int) keystroke->modifiers, keystroke->event_string,
191 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
197 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
200 Accessibility_DeviceEvent key_event;
202 spi_init_keystroke_from_atk_key_event (&key_event, event);
205 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
207 if (key_event.event_string)
208 g_free (key_event.event_string);
213 /*---------------------------------------------------------------------------*/
216 convert_signal_name (const gchar * s)
218 gchar *ret = g_strdup (s);
223 ret[0] = toupper (ret[0]);
224 while ((t = strchr (ret, '-')) != NULL)
226 memmove (t, t + 1, strlen (t));
233 replace_null (const gint type,
238 case DBUS_TYPE_STRING:
239 case DBUS_TYPE_OBJECT_PATH:
250 append_basic (DBusMessageIter *iter,
256 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
258 val = replace_null ((int) *type, val);
259 dbus_message_iter_append_basic(&sub, (int) *type, &val);
261 dbus_message_iter_close_container(iter, &sub);
265 append_rect (DBusMessageIter *iter,
269 DBusMessageIter variant, sub;
270 const AtkRectangle *rect = (const AtkRectangle *) val;
272 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
274 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
276 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
277 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
278 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
279 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
281 dbus_message_iter_close_container (&variant, &sub);
283 dbus_message_iter_close_container(iter, &variant);
287 append_object (DBusMessageIter *iter,
291 spi_object_append_v_reference (iter, ATK_OBJECT (val));
295 signal_name_to_dbus (const gchar *s)
297 gchar *ret = g_strdup (s);
302 ret [0] = toupper (ret [0]);
303 while ((t = strchr (ret, '-')) != NULL)
305 memmove (t, t + 1, strlen (t));
312 * Converts names of the form "active-descendant-changed" to
313 * "ActiveDescendantChanged"
316 ensure_proper_format (const char *name)
318 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
320 gboolean need_upper = TRUE;
328 *p++ = toupper (*name);
331 else if (*name == '-')
333 else if (*name == ':')
347 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
352 gboolean ret = FALSE;
355 if (!spi_global_app_data->events_initialized)
358 data [0] = ensure_proper_format (klass + 21);
359 data [1] = ensure_proper_format (major);
360 data [2] = ensure_proper_format (minor);
363 /* Hack: events such as "object::text-changed::insert:system" as
364 generated by Gecko */
365 data [2][strcspn (data [2], ":")] = '\0';
366 for (list = spi_global_app_data->events; list; list = list->next)
369 if (spi_event_is_subtype (data, evdata->data))
383 * Emits an AT-SPI event.
384 * AT-SPI events names are split into three parts:
386 * This is mapped onto D-Bus events as:
387 * D-Bus Interface:Signal Name:Detail argument
389 * Marshals a basic type into the 'any_data' attribute of
393 emit_event (AtkObject *obj,
397 dbus_int32_t detail1,
398 dbus_int32_t detail2,
401 void (*append_variant) (DBusMessageIter *, const char *, const void *))
403 DBusConnection *bus = spi_global_app_data->bus;
408 DBusMessageIter iter, iter_struct;
410 if (!klass) klass = "";
411 if (!major) major = "";
412 if (!minor) minor = "";
413 if (!type) type = "u";
415 if (!signal_is_needed (klass, major, minor))
418 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
421 * This is very annoying, but as '-' isn't a legal signal
422 * name in D-Bus (Why not??!?) The names need converting
423 * on this side, and again on the client side.
425 cname = signal_name_to_dbus (major);
426 sig = dbus_message_new_signal(path, klass, cname);
428 dbus_message_iter_init_append(sig, &iter);
430 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
431 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
432 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
433 append_variant (&iter, type, val);
434 spi_object_append_reference (&iter, spi_global_app_data->root);
436 dbus_connection_send(bus, sig, NULL);
437 dbus_message_unref(sig);
439 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
440 spi_object_lease_if_needed (G_OBJECT (obj));
446 /*---------------------------------------------------------------------------*/
449 * The focus listener handles the ATK 'focus' signal and forwards it
450 * as the AT-SPI event, 'focus:'
453 focus_tracker (AtkObject * accessible)
455 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
456 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
459 /*---------------------------------------------------------------------------*/
461 #define PCHANGE "PropertyChange"
464 * This handler handles the following ATK signals and
465 * converts them to AT-SPI events:
467 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
469 * The property-name is part of the ATK property-change signal.
472 property_event_listener (GSignalInvocationHint * signal_hint,
473 guint n_param_values,
474 const GValue * param_values, gpointer data)
476 AtkObject *accessible;
477 AtkPropertyValues *values;
479 const gchar *pname = NULL;
485 accessible = g_value_get_object (¶m_values[0]);
486 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
488 pname = values[0].property_name;
490 /* TODO Could improve this control statement by matching
491 * on only the end of the signal names,
493 if (strcmp (pname, "accessible-name") == 0)
495 s1 = atk_object_get_name (accessible);
497 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
498 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
500 else if (strcmp (pname, "accessible-description") == 0)
502 s1 = atk_object_get_description (accessible);
504 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
505 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
507 else if (strcmp (pname, "accessible-parent") == 0)
509 otemp = atk_object_get_parent (accessible);
511 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
512 "(so)", otemp, append_object);
514 else if (strcmp (pname, "accessible-role") == 0)
516 i = atk_object_get_role (accessible);
517 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
518 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
520 else if (strcmp (pname, "accessible-table-summary") == 0)
522 otemp = atk_table_get_summary (ATK_TABLE (accessible));
524 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
525 "(so)", otemp, append_object);
527 else if (strcmp (pname, "accessible-table-column-header") == 0)
529 i = g_value_get_int (&(values->new_value));
530 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
532 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
533 "(so)", otemp, append_object);
535 else if (strcmp (pname, "accessible-table-row-header") == 0)
537 i = g_value_get_int (&(values->new_value));
538 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
540 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
541 "(so)", otemp, append_object);
543 else if (strcmp (pname, "accessible-table-row-description") == 0)
545 i = g_value_get_int (&(values->new_value));
546 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
547 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
548 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
550 else if (strcmp (pname, "accessible-table-column-description") == 0)
552 i = g_value_get_int (&(values->new_value));
553 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
554 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
555 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
557 else if (strcmp (pname, "accessible-table-caption-object") == 0)
559 otemp = atk_table_get_caption (ATK_TABLE (accessible));
560 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
561 "(so)", otemp, append_object);
565 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
566 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
571 /*---------------------------------------------------------------------------*/
573 #define STATE_CHANGED "state-changed"
576 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
577 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
578 * the param-name is part of the ATK state-change signal.
581 state_event_listener (GSignalInvocationHint * signal_hint,
582 guint n_param_values,
583 const GValue * param_values, gpointer data)
585 AtkObject *accessible;
589 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
590 pname = g_strdup (g_value_get_string (¶m_values[1]));
592 /* TODO - Possibly ignore a change to the 'defunct' state.
593 * This is because without reference counting defunct objects should be removed.
595 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
596 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
597 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
602 /*---------------------------------------------------------------------------*/
605 * The window event listener handles the following ATK signals and forwards
606 * them as AT-SPI events:
608 * window:create -> window:create
609 * window:destroy -> window:destroy
610 * window:minimize -> window:minimize
611 * window:maximize -> window:maximize
612 * window:activate -> window:activate
613 * window:deactivate -> window:deactivate
616 window_event_listener (GSignalInvocationHint * signal_hint,
617 guint n_param_values,
618 const GValue * param_values, gpointer data)
620 AtkObject *accessible;
621 GSignalQuery signal_query;
622 const gchar *name, *s;
624 g_signal_query (signal_hint->signal_id, &signal_query);
625 name = signal_query.signal_name;
627 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
628 s = atk_object_get_name (accessible);
629 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
630 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
635 /*---------------------------------------------------------------------------*/
638 * The document event listener handles the following ATK signals
639 * and converts them to AT-SPI events:
641 * Gtk:AtkDocument:load-complete -> document:load-complete
642 * Gtk:AtkDocument:load-stopped -> document:load-stopped
643 * Gtk:AtkDocument:reload -> document:reload
646 document_event_listener (GSignalInvocationHint * signal_hint,
647 guint n_param_values,
648 const GValue * param_values, gpointer data)
650 AtkObject *accessible;
651 GSignalQuery signal_query;
652 const gchar *name, *s;
654 g_signal_query (signal_hint->signal_id, &signal_query);
655 name = signal_query.signal_name;
657 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
658 s = atk_object_get_name (accessible);
659 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
660 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
665 /*---------------------------------------------------------------------------*/
668 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
669 * this to an AT-SPI event - "object:bounds-changed".
672 bounds_event_listener (GSignalInvocationHint * signal_hint,
673 guint n_param_values,
674 const GValue * param_values, gpointer data)
676 AtkObject *accessible;
677 AtkRectangle *atk_rect;
678 GSignalQuery signal_query;
679 const gchar *name, *s;
681 g_signal_query (signal_hint->signal_id, &signal_query);
682 name = signal_query.signal_name;
684 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
686 if (G_VALUE_HOLDS_BOXED (param_values + 1))
688 atk_rect = g_value_get_boxed (param_values + 1);
690 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
691 "(iiii)", atk_rect, append_rect);
696 /*---------------------------------------------------------------------------*/
699 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
700 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
704 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
705 guint n_param_values,
706 const GValue * param_values, gpointer data)
708 AtkObject *accessible;
710 GSignalQuery signal_query;
711 const gchar *name, *minor;
714 g_signal_query (signal_hint->signal_id, &signal_query);
715 name = signal_query.signal_name;
717 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
718 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
719 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
720 minor = g_quark_to_string (signal_hint->detail);
722 detail1 = atk_object_get_index_in_parent (child);
724 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
725 "(so)", child, append_object);
729 /*---------------------------------------------------------------------------*/
732 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
733 * converts it to the AT-SPI signal - 'object:link-selected'
737 link_selected_event_listener (GSignalInvocationHint * signal_hint,
738 guint n_param_values,
739 const GValue * param_values, gpointer data)
741 AtkObject *accessible;
742 GSignalQuery signal_query;
743 const gchar *name, *minor;
746 g_signal_query (signal_hint->signal_id, &signal_query);
747 name = signal_query.signal_name;
749 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
750 minor = g_quark_to_string (signal_hint->detail);
752 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
753 detail1 = g_value_get_int (¶m_values[1]);
755 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
756 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
760 /*---------------------------------------------------------------------------*/
763 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
764 * converts it to the AT-SPI signal - 'object:text-changed'
768 text_changed_event_listener (GSignalInvocationHint * signal_hint,
769 guint n_param_values,
770 const GValue * param_values, gpointer data)
772 AtkObject *accessible;
773 GSignalQuery signal_query;
774 const gchar *name, *minor;
776 gint detail1, detail2;
778 g_signal_query (signal_hint->signal_id, &signal_query);
779 name = signal_query.signal_name;
781 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
782 minor = g_quark_to_string (signal_hint->detail);
784 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
785 detail1 = g_value_get_int (¶m_values[1]);
787 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
788 detail2 = g_value_get_int (¶m_values[2]);
791 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
793 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
794 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
798 /*---------------------------------------------------------------------------*/
801 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
802 * converts it to the AT-SPI signal - 'object:text-selection-changed'
806 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
807 guint n_param_values,
808 const GValue * param_values,
811 AtkObject *accessible;
812 GSignalQuery signal_query;
813 const gchar *name, *minor;
814 gint detail1, detail2;
816 g_signal_query (signal_hint->signal_id, &signal_query);
817 name = signal_query.signal_name;
819 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
820 minor = g_quark_to_string (signal_hint->detail);
822 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
823 detail1 = g_value_get_int (¶m_values[1]);
825 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
826 detail2 = g_value_get_int (¶m_values[2]);
828 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
829 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
833 /*---------------------------------------------------------------------------*/
836 * Children changed signal converter and forwarder.
838 * Klass (Interface) org.a11y.atspi.Event.Object
839 * Major is the signal name.
840 * Minor is 'add' or 'remove'
841 * detail1 is the index.
843 * any_data is the child reference.
846 children_changed_event_listener (GSignalInvocationHint * signal_hint,
847 guint n_param_values,
848 const GValue * param_values, gpointer data)
850 GSignalQuery signal_query;
851 const gchar *name, *minor;
852 gint detail1, detail2 = 0;
854 AtkObject *accessible, *ao=NULL;
857 g_signal_query (signal_hint->signal_id, &signal_query);
858 name = signal_query.signal_name;
860 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
861 minor = g_quark_to_string (signal_hint->detail);
863 detail1 = g_value_get_uint (param_values + 1);
864 child = g_value_get_pointer (param_values + 2);
866 if (ATK_IS_OBJECT (child))
868 ao = ATK_OBJECT (child);
869 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
870 "(so)", ao, append_object);
872 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
874 ao = atk_object_ref_accessible_child (accessible,
876 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
877 "(so)", ao, append_object);
881 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
882 "(so)", ao, append_object);
888 /*---------------------------------------------------------------------------*/
891 toplevel_added_event_listener (AtkObject * accessible,
892 guint index, AtkObject * child)
894 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
895 "(so)", child, append_object);
899 toplevel_removed_event_listener (AtkObject * accessible,
900 guint index, AtkObject * child)
902 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
903 "(so)", child, append_object);
906 /*---------------------------------------------------------------------------*/
909 * Generic signal converter and forwarder.
911 * Klass (Interface) org.a11y.atspi.Event.Object
912 * Major is the signal name.
919 generic_event_listener (GSignalInvocationHint * signal_hint,
920 guint n_param_values,
921 const GValue * param_values, gpointer data)
923 AtkObject *accessible;
924 GSignalQuery signal_query;
926 int detail1 = 0, detail2 = 0;
928 g_signal_query (signal_hint->signal_id, &signal_query);
929 name = signal_query.signal_name;
931 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
933 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
934 detail1 = g_value_get_int (¶m_values[1]);
936 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
937 detail2 = g_value_get_int (¶m_values[2]);
939 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
940 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
944 /*---------------------------------------------------------------------------*/
947 * Registers the provided function as a handler for the given signal name
948 * and stores the signal id returned so that the function may be
949 * de-registered later.
952 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
956 id = atk_add_global_event_listener (listener, signal_name);
957 g_array_append_val (listener_ids, id);
961 * Initialization for the signal handlers.
963 * Registers all required signal handlers.
966 spi_atk_register_event_listeners (void)
969 * Kludge to make sure the Atk interface types are registered, otherwise
970 * the AtkText signal handlers below won't get registered
972 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
973 AtkObject *bo = atk_no_op_object_new (ao);
975 g_object_unref (G_OBJECT (bo));
978 /* Register for focus event notifications, and register app with central registry */
979 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
981 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
983 add_signal_listener (property_event_listener,
984 "Gtk:AtkObject:property-change");
985 add_signal_listener (window_event_listener, "window:create");
986 add_signal_listener (window_event_listener, "window:destroy");
987 add_signal_listener (window_event_listener, "window:minimize");
988 add_signal_listener (window_event_listener, "window:maximize");
989 add_signal_listener (window_event_listener, "window:restore");
990 add_signal_listener (window_event_listener, "window:activate");
991 add_signal_listener (window_event_listener, "window:deactivate");
992 add_signal_listener (document_event_listener,
993 "Gtk:AtkDocument:load-complete");
994 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
995 add_signal_listener (document_event_listener,
996 "Gtk:AtkDocument:load-stopped");
997 /* TODO Fake this event on the client side */
998 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
1000 add_signal_listener (active_descendant_event_listener,
1001 "Gtk:AtkObject:active-descendant-changed");
1002 add_signal_listener (bounds_event_listener,
1003 "Gtk:AtkComponent:bounds-changed");
1004 add_signal_listener (text_selection_changed_event_listener,
1005 "Gtk:AtkText:text-selection-changed");
1006 add_signal_listener (text_changed_event_listener,
1007 "Gtk:AtkText:text-changed");
1008 add_signal_listener (link_selected_event_listener,
1009 "Gtk:AtkHypertext:link-selected");
1010 add_signal_listener (generic_event_listener,
1011 "Gtk:AtkObject:visible-data-changed");
1012 add_signal_listener (generic_event_listener,
1013 "Gtk:AtkSelection:selection-changed");
1014 add_signal_listener (generic_event_listener,
1015 "Gtk:AtkText:text-attributes-changed");
1016 add_signal_listener (generic_event_listener,
1017 "Gtk:AtkText:text-caret-moved");
1018 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1019 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1020 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1021 add_signal_listener (generic_event_listener,
1022 "Gtk:AtkTable:column-inserted");
1023 add_signal_listener (generic_event_listener,
1024 "Gtk:AtkTable:column-reordered");
1025 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1026 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1028 /* Children signal listeners */
1029 atk_add_global_event_listener (children_changed_event_listener,
1030 "Gtk:AtkObject:children-changed");
1033 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1034 "children-changed::add",
1035 (GCallback) toplevel_added_event_listener, NULL);
1037 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1038 "children-changed::remove",
1039 (GCallback) toplevel_removed_event_listener, NULL);
1043 * May add the following listeners to implement preemptive key listening for GTK+
1045 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1046 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1048 atk_bridge_key_event_listener_id =
1049 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1052 /*---------------------------------------------------------------------------*/
1055 * De-registers all ATK signal handlers.
1058 spi_atk_deregister_event_listeners (void)
1061 GArray *ids = listener_ids;
1062 listener_ids = NULL;
1064 if (atk_bridge_focus_tracker_id)
1065 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1067 for (i = 0; ids && i < ids->len; i++)
1069 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1072 if (atk_bridge_key_event_listener_id)
1073 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1076 /*---------------------------------------------------------------------------*/
1079 * TODO This function seems out of place here.
1081 * Emits fake deactivate signals on all top-level windows.
1082 * Used when shutting down AT-SPI, ensuring that all
1083 * windows have been removed on the client side.
1086 spi_atk_tidy_windows (void)
1092 root = atk_get_root ();
1093 n_children = atk_object_get_n_accessible_children (root);
1094 for (i = 0; i < n_children; i++)
1097 AtkStateSet *stateset;
1100 child = atk_object_ref_accessible_child (root, i);
1101 stateset = atk_object_ref_state_set (child);
1103 name = atk_object_get_name (child);
1104 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1106 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1107 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1109 g_object_unref (stateset);
1111 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1112 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1113 g_object_unref (child);
1118 spi_event_is_subtype (gchar **needle, gchar **haystack)
1120 while (*haystack && **haystack)
1122 if (g_strcmp0 (*needle, *haystack))
1130 /*END------------------------------------------------------------------------*/