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 validate_for_dbus (const gint type,
236 case DBUS_TYPE_STRING:
237 case DBUS_TYPE_OBJECT_PATH:
240 else if (!g_utf8_validate (val, -1, NULL))
242 g_warning ("atk-bridge: Received bad UTF-8 string when emitting event");
253 append_basic (DBusMessageIter *iter,
259 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
261 val = validate_for_dbus ((int) *type, val);
262 dbus_message_iter_append_basic(&sub, (int) *type, &val);
264 dbus_message_iter_close_container(iter, &sub);
268 append_rect (DBusMessageIter *iter,
272 DBusMessageIter variant, sub;
273 const AtkRectangle *rect = (const AtkRectangle *) val;
275 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
277 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
279 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
280 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
281 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
282 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
284 dbus_message_iter_close_container (&variant, &sub);
286 dbus_message_iter_close_container(iter, &variant);
290 append_object (DBusMessageIter *iter,
294 spi_object_append_v_reference (iter, ATK_OBJECT (val));
298 signal_name_to_dbus (const gchar *s)
300 gchar *ret = g_strdup (s);
305 ret [0] = toupper (ret [0]);
306 while ((t = strchr (ret, '-')) != NULL)
308 memmove (t, t + 1, strlen (t));
315 * Converts names of the form "active-descendant-changed" to
316 * "ActiveDescendantChanged"
319 ensure_proper_format (const char *name)
321 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
323 gboolean need_upper = TRUE;
331 *p++ = toupper (*name);
334 else if (*name == '-')
336 else if (*name == ':')
350 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
355 gboolean ret = FALSE;
358 if (!spi_global_app_data->events_initialized)
361 data [0] = ensure_proper_format (klass + 21);
362 data [1] = ensure_proper_format (major);
363 data [2] = ensure_proper_format (minor);
366 /* Hack: events such as "object::text-changed::insert:system" as
367 generated by Gecko */
368 data [2][strcspn (data [2], ":")] = '\0';
369 for (list = spi_global_app_data->events; list; list = list->next)
372 if (spi_event_is_subtype (data, evdata->data))
379 //printf("event: %s %s %s: %d\n", data[0], data[1], data[2], ret);
387 * Emits an AT-SPI event.
388 * AT-SPI events names are split into three parts:
390 * This is mapped onto D-Bus events as:
391 * D-Bus Interface:Signal Name:Detail argument
393 * Marshals a basic type into the 'any_data' attribute of
397 emit_event (AtkObject *obj,
401 dbus_int32_t detail1,
402 dbus_int32_t detail2,
405 void (*append_variant) (DBusMessageIter *, const char *, const void *))
407 DBusConnection *bus = spi_global_app_data->bus;
412 DBusMessageIter iter, iter_struct;
414 if (!klass) klass = "";
415 if (!major) major = "";
416 if (!minor) minor = "";
417 if (!type) type = "u";
419 if (!signal_is_needed (klass, major, minor))
422 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
425 * This is very annoying, but as '-' isn't a legal signal
426 * name in D-Bus (Why not??!?) The names need converting
427 * on this side, and again on the client side.
429 cname = signal_name_to_dbus (major);
430 sig = dbus_message_new_signal(path, klass, cname);
432 dbus_message_iter_init_append(sig, &iter);
434 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
435 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
436 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
437 append_variant (&iter, type, val);
438 spi_object_append_reference (&iter, spi_global_app_data->root);
440 dbus_connection_send(bus, sig, NULL);
441 dbus_message_unref(sig);
443 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
444 spi_object_lease_if_needed (G_OBJECT (obj));
450 /*---------------------------------------------------------------------------*/
453 * The focus listener handles the ATK 'focus' signal and forwards it
454 * as the AT-SPI event, 'focus:'
457 focus_tracker (AtkObject * accessible)
459 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
460 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
463 /*---------------------------------------------------------------------------*/
465 #define PCHANGE "PropertyChange"
468 * This handler handles the following ATK signals and
469 * converts them to AT-SPI events:
471 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
473 * The property-name is part of the ATK property-change signal.
476 property_event_listener (GSignalInvocationHint * signal_hint,
477 guint n_param_values,
478 const GValue * param_values, gpointer data)
480 AtkObject *accessible;
481 AtkPropertyValues *values;
483 const gchar *pname = NULL;
489 accessible = g_value_get_object (¶m_values[0]);
490 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
492 pname = values[0].property_name;
494 /* TODO Could improve this control statement by matching
495 * on only the end of the signal names,
497 if (strcmp (pname, "accessible-name") == 0)
499 s1 = atk_object_get_name (accessible);
501 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
502 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
504 else if (strcmp (pname, "accessible-description") == 0)
506 s1 = atk_object_get_description (accessible);
508 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
509 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
511 else if (strcmp (pname, "accessible-parent") == 0)
513 otemp = atk_object_get_parent (accessible);
515 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
516 "(so)", otemp, append_object);
518 else if (strcmp (pname, "accessible-role") == 0)
520 i = atk_object_get_role (accessible);
521 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
522 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
524 else if (strcmp (pname, "accessible-table-summary") == 0)
526 otemp = atk_table_get_summary (ATK_TABLE (accessible));
528 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
529 "(so)", otemp, append_object);
531 else if (strcmp (pname, "accessible-table-column-header") == 0)
533 i = g_value_get_int (&(values->new_value));
534 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
536 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
537 "(so)", otemp, append_object);
539 else if (strcmp (pname, "accessible-table-row-header") == 0)
541 i = g_value_get_int (&(values->new_value));
542 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
544 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
545 "(so)", otemp, append_object);
547 else if (strcmp (pname, "accessible-table-row-description") == 0)
549 i = g_value_get_int (&(values->new_value));
550 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
551 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
552 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
554 else if (strcmp (pname, "accessible-table-column-description") == 0)
556 i = g_value_get_int (&(values->new_value));
557 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
558 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
559 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
561 else if (strcmp (pname, "accessible-table-caption-object") == 0)
563 otemp = atk_table_get_caption (ATK_TABLE (accessible));
564 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
565 "(so)", otemp, append_object);
569 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
570 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
575 /*---------------------------------------------------------------------------*/
577 #define STATE_CHANGED "state-changed"
580 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
581 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
582 * the param-name is part of the ATK state-change signal.
585 state_event_listener (GSignalInvocationHint * signal_hint,
586 guint n_param_values,
587 const GValue * param_values, gpointer data)
589 AtkObject *accessible;
593 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
594 pname = g_strdup (g_value_get_string (¶m_values[1]));
596 /* TODO - Possibly ignore a change to the 'defunct' state.
597 * This is because without reference counting defunct objects should be removed.
599 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
600 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
601 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
606 /*---------------------------------------------------------------------------*/
609 * The window event listener handles the following ATK signals and forwards
610 * them as AT-SPI events:
612 * window:create -> window:create
613 * window:destroy -> window:destroy
614 * window:minimize -> window:minimize
615 * window:maximize -> window:maximize
616 * window:activate -> window:activate
617 * window:deactivate -> window:deactivate
620 window_event_listener (GSignalInvocationHint * signal_hint,
621 guint n_param_values,
622 const GValue * param_values, gpointer data)
624 AtkObject *accessible;
625 GSignalQuery signal_query;
626 const gchar *name, *s;
628 g_signal_query (signal_hint->signal_id, &signal_query);
629 name = signal_query.signal_name;
631 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
632 s = atk_object_get_name (accessible);
633 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
634 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
639 /*---------------------------------------------------------------------------*/
642 * The document event listener handles the following ATK signals
643 * and converts them to AT-SPI events:
645 * Gtk:AtkDocument:load-complete -> document:load-complete
646 * Gtk:AtkDocument:load-stopped -> document:load-stopped
647 * Gtk:AtkDocument:reload -> document:reload
650 document_event_listener (GSignalInvocationHint * signal_hint,
651 guint n_param_values,
652 const GValue * param_values, gpointer data)
654 AtkObject *accessible;
655 GSignalQuery signal_query;
656 const gchar *name, *s;
658 g_signal_query (signal_hint->signal_id, &signal_query);
659 name = signal_query.signal_name;
661 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
662 s = atk_object_get_name (accessible);
663 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
664 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
669 /*---------------------------------------------------------------------------*/
672 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
673 * this to an AT-SPI event - "object:bounds-changed".
676 bounds_event_listener (GSignalInvocationHint * signal_hint,
677 guint n_param_values,
678 const GValue * param_values, gpointer data)
680 AtkObject *accessible;
681 AtkRectangle *atk_rect;
682 GSignalQuery signal_query;
683 const gchar *name, *s;
685 g_signal_query (signal_hint->signal_id, &signal_query);
686 name = signal_query.signal_name;
688 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
690 if (G_VALUE_HOLDS_BOXED (param_values + 1))
692 atk_rect = g_value_get_boxed (param_values + 1);
694 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
695 "(iiii)", atk_rect, append_rect);
700 /*---------------------------------------------------------------------------*/
703 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
704 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
708 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
709 guint n_param_values,
710 const GValue * param_values, gpointer data)
712 AtkObject *accessible;
714 GSignalQuery signal_query;
715 const gchar *name, *minor;
718 g_signal_query (signal_hint->signal_id, &signal_query);
719 name = signal_query.signal_name;
721 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
722 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
723 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
724 minor = g_quark_to_string (signal_hint->detail);
726 detail1 = atk_object_get_index_in_parent (child);
728 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
729 "(so)", child, append_object);
733 /*---------------------------------------------------------------------------*/
736 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
737 * converts it to the AT-SPI signal - 'object:link-selected'
741 link_selected_event_listener (GSignalInvocationHint * signal_hint,
742 guint n_param_values,
743 const GValue * param_values, gpointer data)
745 AtkObject *accessible;
746 GSignalQuery signal_query;
747 const gchar *name, *minor;
750 g_signal_query (signal_hint->signal_id, &signal_query);
751 name = signal_query.signal_name;
753 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
754 minor = g_quark_to_string (signal_hint->detail);
756 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
757 detail1 = g_value_get_int (¶m_values[1]);
759 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
760 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
764 /*---------------------------------------------------------------------------*/
767 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
768 * converts it to the AT-SPI signal - 'object:text-changed'
769 * This signal is deprecated by Gtk:AtkText:text-insert
770 * and Gtk:AtkText:text-remove
774 text_changed_event_listener (GSignalInvocationHint * signal_hint,
775 guint n_param_values,
776 const GValue * param_values, gpointer data)
778 AtkObject *accessible;
779 GSignalQuery signal_query;
780 const gchar *name, *minor;
782 gint detail1, detail2;
784 g_signal_query (signal_hint->signal_id, &signal_query);
785 name = signal_query.signal_name;
787 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
788 minor = g_quark_to_string (signal_hint->detail);
790 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
791 detail1 = g_value_get_int (¶m_values[1]);
793 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
794 detail2 = g_value_get_int (¶m_values[2]);
797 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
799 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
800 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
807 * Handles the ATK signal 'Gtk:AtkText:text-insert' and
808 * converts it to the AT-SPI signal - 'object:text-changed'
812 text_insert_event_listener (GSignalInvocationHint * signal_hint,
813 guint n_param_values,
814 const GValue * param_values, gpointer data)
816 AtkObject *accessible;
817 guint text_changed_signal_id;
818 GSignalQuery signal_query;
821 gint detail1, detail2;
823 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
824 /* Get signal name for 'Gtk:AtkText:text-changed' so
825 * we convert it to the AT-SPI signal - 'object:text-changed'
827 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
828 g_signal_query (text_changed_signal_id, &signal_query);
829 name = signal_query.signal_name;
832 /* Add the insert and keep any detail coming from atk */
833 minor = g_quark_to_string (signal_hint->detail);
835 minor = g_strconcat ("insert:", minor, NULL);
837 minor = g_strdup ("insert");
839 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
840 detail1 = g_value_get_int (¶m_values[1]);
842 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
843 detail2 = g_value_get_int (¶m_values[2]);
845 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
846 text = g_value_get_string (¶m_values[3]);
848 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
849 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
855 * Handles the ATK signal 'Gtk:AtkText:text-remove' and
856 * converts it to the AT-SPI signal - 'object:text-changed'
860 text_remove_event_listener (GSignalInvocationHint * signal_hint,
861 guint n_param_values,
862 const GValue * param_values, gpointer data)
864 AtkObject *accessible;
865 guint text_changed_signal_id;
866 GSignalQuery signal_query;
869 gint detail1, detail2;
871 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
872 /* Get signal name for 'Gtk:AtkText:text-changed' so
873 * we convert it to the AT-SPI signal - 'object:text-changed'
875 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
876 g_signal_query (text_changed_signal_id, &signal_query);
877 name = signal_query.signal_name;
879 minor = g_quark_to_string (signal_hint->detail);
881 /* Add the delete and keep any detail coming from atk */
882 minor = g_quark_to_string (signal_hint->detail);
884 minor = g_strconcat ("delete:", minor, NULL);
886 minor = g_strdup ("delete");
888 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
889 detail1 = g_value_get_int (¶m_values[1]);
891 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
892 detail2 = g_value_get_int (¶m_values[2]);
894 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
895 text = g_value_get_string (¶m_values[3]);
897 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
898 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
904 /*---------------------------------------------------------------------------*/
907 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
908 * converts it to the AT-SPI signal - 'object:text-selection-changed'
912 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
913 guint n_param_values,
914 const GValue * param_values,
917 AtkObject *accessible;
918 GSignalQuery signal_query;
919 const gchar *name, *minor;
920 gint detail1, detail2;
922 g_signal_query (signal_hint->signal_id, &signal_query);
923 name = signal_query.signal_name;
925 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
926 minor = g_quark_to_string (signal_hint->detail);
928 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
929 detail1 = g_value_get_int (¶m_values[1]);
931 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
932 detail2 = g_value_get_int (¶m_values[2]);
934 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
935 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
939 /*---------------------------------------------------------------------------*/
942 * Children changed signal converter and forwarder.
944 * Klass (Interface) org.a11y.atspi.Event.Object
945 * Major is the signal name.
946 * Minor is 'add' or 'remove'
947 * detail1 is the index.
949 * any_data is the child reference.
952 children_changed_event_listener (GSignalInvocationHint * signal_hint,
953 guint n_param_values,
954 const GValue * param_values, gpointer data)
956 GSignalQuery signal_query;
957 const gchar *name, *minor;
958 gint detail1, detail2 = 0;
960 AtkObject *accessible, *ao=NULL;
963 g_signal_query (signal_hint->signal_id, &signal_query);
964 name = signal_query.signal_name;
966 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
967 minor = g_quark_to_string (signal_hint->detail);
969 detail1 = g_value_get_uint (param_values + 1);
970 child = g_value_get_pointer (param_values + 2);
972 if (ATK_IS_OBJECT (child))
974 ao = ATK_OBJECT (child);
975 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
976 "(so)", ao, append_object);
978 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
980 ao = atk_object_ref_accessible_child (accessible,
982 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
983 "(so)", ao, append_object);
987 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
988 "(so)", ao, append_object);
994 /*---------------------------------------------------------------------------*/
997 toplevel_added_event_listener (AtkObject * accessible,
998 guint index, AtkObject * child)
1000 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
1001 "(so)", child, append_object);
1005 toplevel_removed_event_listener (AtkObject * accessible,
1006 guint index, AtkObject * child)
1008 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
1009 "(so)", child, append_object);
1012 /*---------------------------------------------------------------------------*/
1015 * Generic signal converter and forwarder.
1017 * Klass (Interface) org.a11y.atspi.Event.Object
1018 * Major is the signal name.
1025 generic_event_listener (GSignalInvocationHint * signal_hint,
1026 guint n_param_values,
1027 const GValue * param_values, gpointer data)
1029 AtkObject *accessible;
1030 GSignalQuery signal_query;
1032 int detail1 = 0, detail2 = 0;
1034 g_signal_query (signal_hint->signal_id, &signal_query);
1035 name = signal_query.signal_name;
1037 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1039 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
1040 detail1 = g_value_get_int (¶m_values[1]);
1042 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
1043 detail2 = g_value_get_int (¶m_values[2]);
1045 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
1046 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
1050 /*---------------------------------------------------------------------------*/
1053 * Registers the provided function as a handler for the given signal name
1054 * and stores the signal id returned so that the function may be
1055 * de-registered later.
1058 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
1062 id = atk_add_global_event_listener (listener, signal_name);
1063 g_array_append_val (listener_ids, id);
1067 * Initialization for the signal handlers.
1069 * Registers all required signal handlers.
1072 spi_atk_register_event_listeners (void)
1075 * Kludge to make sure the Atk interface types are registered, otherwise
1076 * the AtkText signal handlers below won't get registered
1078 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
1079 AtkObject *bo = atk_no_op_object_new (ao);
1081 g_object_unref (G_OBJECT (bo));
1082 g_object_unref (ao);
1084 /* Register for focus event notifications, and register app with central registry */
1085 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
1087 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
1089 add_signal_listener (property_event_listener,
1090 "Gtk:AtkObject:property-change");
1091 add_signal_listener (window_event_listener, "window:create");
1092 add_signal_listener (window_event_listener, "window:destroy");
1093 add_signal_listener (window_event_listener, "window:minimize");
1094 add_signal_listener (window_event_listener, "window:maximize");
1095 add_signal_listener (window_event_listener, "window:restore");
1096 add_signal_listener (window_event_listener, "window:activate");
1097 add_signal_listener (window_event_listener, "window:deactivate");
1098 add_signal_listener (document_event_listener,
1099 "Gtk:AtkDocument:load-complete");
1100 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
1101 add_signal_listener (document_event_listener,
1102 "Gtk:AtkDocument:load-stopped");
1103 /* TODO Fake this event on the client side */
1104 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
1106 add_signal_listener (active_descendant_event_listener,
1107 "Gtk:AtkObject:active-descendant-changed");
1108 add_signal_listener (bounds_event_listener,
1109 "Gtk:AtkComponent:bounds-changed");
1110 add_signal_listener (text_selection_changed_event_listener,
1111 "Gtk:AtkText:text-selection-changed");
1112 add_signal_listener (text_changed_event_listener,
1113 "Gtk:AtkText:text-changed");
1114 add_signal_listener (text_insert_event_listener,
1115 "Gtk:AtkText:text-insert");
1116 add_signal_listener (text_remove_event_listener,
1117 "Gtk:AtkText:text-remove");
1118 add_signal_listener (link_selected_event_listener,
1119 "Gtk:AtkHypertext:link-selected");
1120 add_signal_listener (generic_event_listener,
1121 "Gtk:AtkObject:visible-data-changed");
1122 add_signal_listener (generic_event_listener,
1123 "Gtk:AtkSelection:selection-changed");
1124 add_signal_listener (generic_event_listener,
1125 "Gtk:AtkText:text-attributes-changed");
1126 add_signal_listener (generic_event_listener,
1127 "Gtk:AtkText:text-caret-moved");
1128 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1129 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1130 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1131 add_signal_listener (generic_event_listener,
1132 "Gtk:AtkTable:column-inserted");
1133 add_signal_listener (generic_event_listener,
1134 "Gtk:AtkTable:column-reordered");
1135 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1136 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1138 /* Children signal listeners */
1139 atk_add_global_event_listener (children_changed_event_listener,
1140 "Gtk:AtkObject:children-changed");
1143 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1144 "children-changed::add",
1145 (GCallback) toplevel_added_event_listener, NULL);
1147 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1148 "children-changed::remove",
1149 (GCallback) toplevel_removed_event_listener, NULL);
1153 * May add the following listeners to implement preemptive key listening for GTK+
1155 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1156 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1158 atk_bridge_key_event_listener_id =
1159 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1162 /*---------------------------------------------------------------------------*/
1165 * De-registers all ATK signal handlers.
1168 spi_atk_deregister_event_listeners (void)
1171 GArray *ids = listener_ids;
1172 listener_ids = NULL;
1174 if (atk_bridge_focus_tracker_id)
1175 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1177 for (i = 0; ids && i < ids->len; i++)
1179 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1182 if (atk_bridge_key_event_listener_id)
1183 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1186 /*---------------------------------------------------------------------------*/
1189 * TODO This function seems out of place here.
1191 * Emits fake deactivate signals on all top-level windows.
1192 * Used when shutting down AT-SPI, ensuring that all
1193 * windows have been removed on the client side.
1196 spi_atk_tidy_windows (void)
1202 root = atk_get_root ();
1203 n_children = atk_object_get_n_accessible_children (root);
1204 for (i = 0; i < n_children; i++)
1207 AtkStateSet *stateset;
1210 child = atk_object_ref_accessible_child (root, i);
1211 stateset = atk_object_ref_state_set (child);
1213 name = atk_object_get_name (child);
1214 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1216 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1217 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1219 g_object_unref (stateset);
1221 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1222 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1223 g_object_unref (child);
1228 spi_event_is_subtype (gchar **needle, gchar **haystack)
1230 while (*haystack && **haystack)
1232 if (g_strcmp0 (*needle, *haystack))
1240 /*END------------------------------------------------------------------------*/