2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2011, F123 Consulting & Mais Diferenças
6 * Copyright 2008, 2009, Codethink Ltd.
7 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
8 * Copyright 2001, 2002, 2003 Ximian, Inc.
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
20 * You should have received a copy of the GNU Library General Public
21 * License along with this library; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 02111-1307, USA.
30 #include <droute/droute.h>
31 #include <atspi/atspi.h>
34 #include "accessible-register.h"
40 static GArray *listener_ids = NULL;
42 static gint atk_bridge_key_event_listener_id;
43 static gint atk_bridge_focus_tracker_id;
45 /*---------------------------------------------------------------------------*/
47 #define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
48 #define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
49 #define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
50 #define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
52 /*---------------------------------------------------------------------------*/
54 typedef struct _SpiReentrantCallClosure
60 } SpiReentrantCallClosure;
63 switch_main_context (GMainContext *cnx)
68 atspi_dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
70 atspi_dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
71 for (list = spi_global_app_data->direct_connections; list; list = list->next)
72 atspi_dbus_connection_setup_with_g_main (list->data, cnx);
76 set_reply (DBusPendingCall * pending, void *user_data)
78 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
80 closure->reply = dbus_pending_call_steal_reply (pending);
81 dbus_pending_call_unref (pending);
82 switch_main_context (NULL);
83 g_main_loop_quit (closure->loop);
87 timeout_reply (void *data)
89 SpiReentrantCallClosure *closure = data;
91 if (!dbus_connection_get_is_connected (closure->bus))
92 g_main_loop_quit (closure->loop);
93 closure->timeout = -1;
98 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
100 DBusPendingCall *pending;
101 SpiReentrantCallClosure closure;
102 GMainContext *main_context;
105 main_context = (g_getenv ("AT_SPI_CLIENT") ? NULL :
106 spi_global_app_data->main_context);
108 closure.loop = g_main_loop_new (main_context, FALSE);
109 closure.reply = NULL;
110 switch_main_context (main_context);
112 if (!dbus_connection_send_with_reply (bus, message, &pending, 9000) || !pending)
114 switch_main_context (NULL);
117 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
118 source = g_timeout_source_new (500);
119 g_source_set_callback (source, timeout_reply, &closure, NULL);
120 closure.timeout = g_source_attach (source, main_context);
121 g_source_unref (source);
122 g_main_loop_run (closure.loop);
123 if (closure.timeout != -1)
124 g_source_destroy (source);
126 g_main_loop_unref (closure.loop);
127 return closure.reply;
130 /*---------------------------------------------------------------------------*/
133 * Functionality related to sending device events from the application.
135 * This is used for forwarding key events on to the registry daemon.
139 Accessibility_DeviceEventController_NotifyListenersSync (const
143 DBusMessage *message;
145 dbus_bool_t consumed = FALSE;
148 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
150 ATSPI_DBUS_INTERFACE_DEC,
151 "NotifyListenersSync");
153 dbus_error_init (&error);
154 if (spi_dbus_marshal_deviceEvent (message, key_event))
157 send_and_allow_reentry (spi_global_app_data->bus, message);
161 dbus_error_init (&error);
162 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
164 dbus_message_unref (reply);
167 dbus_message_unref (message);
172 spi_init_keystroke_from_atk_key_event (AtspiDeviceEvent * keystroke,
173 AtkKeyEventStruct * event)
175 keystroke->id = (dbus_int32_t) event->keyval;
176 keystroke->hw_code = (dbus_int16_t) event->keycode;
177 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
178 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
183 keystroke->event_string = g_strdup (event->string);
184 c = g_utf8_get_char_validated (event->string, -1);
185 if (c > 0 && g_unichar_isprint (c))
186 keystroke->is_text = TRUE;
188 keystroke->is_text = FALSE;
192 keystroke->event_string = g_strdup ("");
193 keystroke->is_text = FALSE;
197 case (ATK_KEY_EVENT_PRESS):
198 keystroke->type = ATSPI_KEY_PRESSED;
200 case (ATK_KEY_EVENT_RELEASE):
201 keystroke->type = ATSPI_KEY_RELEASED;
209 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
210 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
211 (int) keystroke->modifiers, keystroke->event_string,
212 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
218 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
221 AtspiDeviceEvent key_event;
223 spi_init_keystroke_from_atk_key_event (&key_event, event);
226 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
228 if (key_event.event_string)
229 g_free (key_event.event_string);
234 /*---------------------------------------------------------------------------*/
237 validate_for_dbus (const gint type,
242 case DBUS_TYPE_STRING:
243 case DBUS_TYPE_OBJECT_PATH:
246 else if (!g_utf8_validate (val, -1, NULL))
248 g_warning ("atk-bridge: Received bad UTF-8 string when emitting event");
259 append_basic (DBusMessageIter *iter,
265 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
267 val = validate_for_dbus ((int) *type, val);
268 dbus_message_iter_append_basic(&sub, (int) *type, &val);
270 dbus_message_iter_close_container(iter, &sub);
274 append_rect (DBusMessageIter *iter,
278 DBusMessageIter variant, sub;
279 const AtkRectangle *rect = (const AtkRectangle *) val;
281 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
283 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
285 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
286 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
287 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
288 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
290 dbus_message_iter_close_container (&variant, &sub);
292 dbus_message_iter_close_container(iter, &variant);
296 append_object (DBusMessageIter *iter,
300 spi_object_append_v_reference (iter, ATK_OBJECT (val));
304 signal_name_to_dbus (const gchar *s)
306 gchar *ret = g_strdup (s);
311 ret [0] = toupper (ret [0]);
312 while ((t = strchr (ret, '-')) != NULL)
314 memmove (t, t + 1, strlen (t));
321 * Converts names of the form "active-descendant-changed" to
322 * "ActiveDescendantChanged"
325 ensure_proper_format (const char *name)
327 gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
329 gboolean need_upper = TRUE;
337 *p++ = toupper (*name);
340 else if (*name == '-')
342 else if (*name == ':')
356 signal_is_needed (const gchar *klass, const gchar *major, const gchar *minor)
360 gboolean ret = FALSE;
363 if (!spi_global_app_data->events_initialized)
366 data [0] = ensure_proper_format (klass + 21);
367 data [1] = ensure_proper_format (major);
368 data [2] = ensure_proper_format (minor);
371 /* Hack: Always pass events that update the cache.
372 * TODO: FOr 2.2, have at-spi2-core define a special "cache listener" for
373 * this instead, so that we don't send these if no one is listening */
374 if (!g_strcmp0 (data [1], "ChildrenChanged") ||
375 !g_strcmp0 (data [1], "PropertyChange") ||
376 !g_strcmp0 (data [1], "StateChanged"))
384 /* Hack: events such as "object::text-changed::insert:system" as
385 generated by Gecko */
386 data [2][strcspn (data [2], ":")] = '\0';
387 for (list = spi_global_app_data->events; list; list = list->next)
390 if (spi_event_is_subtype (data, evdata->data))
398 g_print("event: %s %s %s: %d\n", data[0], data[1], data[2], ret);
406 /* Convert a : to a / so that listeners can use arg0path to match only
409 adapt_minor_for_dbus (const char *source)
411 gchar *ret = g_strdup (source);
412 int i = strcspn (ret, ":");
419 * Emits an AT-SPI event.
420 * AT-SPI events names are split into three parts:
422 * This is mapped onto D-Bus events as:
423 * D-Bus Interface:Signal Name:Detail argument
425 * Marshals a basic type into the 'any_data' attribute of
429 emit_event (AtkObject *obj,
433 dbus_int32_t detail1,
434 dbus_int32_t detail2,
437 void (*append_variant) (DBusMessageIter *, const char *, const void *))
439 DBusConnection *bus = spi_global_app_data->bus;
445 DBusMessageIter iter;
447 if (!klass) klass = "";
448 if (!major) major = "";
449 if (!minor) minor = "";
450 if (!type) type = "u";
452 if (!signal_is_needed (klass, major, minor))
455 path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
456 g_return_if_fail (path != NULL);
459 * This is very annoying, but as '-' isn't a legal signal
460 * name in D-Bus (Why not??!?) The names need converting
461 * on this side, and again on the client side.
463 cname = signal_name_to_dbus (major);
464 sig = dbus_message_new_signal(path, klass, cname);
466 dbus_message_iter_init_append(sig, &iter);
468 minor_dbus = adapt_minor_for_dbus (minor);
469 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor_dbus);
471 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
472 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
473 append_variant (&iter, type, val);
474 spi_object_append_reference (&iter, spi_global_app_data->root);
476 dbus_connection_send(bus, sig, NULL);
477 dbus_message_unref(sig);
479 if (g_strcmp0 (cname, "ChildrenChanged") != 0)
480 spi_object_lease_if_needed (G_OBJECT (obj));
486 /*---------------------------------------------------------------------------*/
489 * The focus listener handles the ATK 'focus' signal and forwards it
490 * as the AT-SPI event, 'focus:'
493 focus_tracker (AtkObject * accessible)
495 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
496 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
499 /*---------------------------------------------------------------------------*/
501 #define PCHANGE "PropertyChange"
504 * This handler handles the following ATK signals and
505 * converts them to AT-SPI events:
507 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
509 * The property-name is part of the ATK property-change signal.
512 property_event_listener (GSignalInvocationHint * signal_hint,
513 guint n_param_values,
514 const GValue * param_values, gpointer data)
516 AtkObject *accessible;
517 AtkPropertyValues *values;
519 const gchar *pname = NULL;
525 accessible = g_value_get_object (¶m_values[0]);
526 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
528 pname = values[0].property_name;
530 /* TODO Could improve this control statement by matching
531 * on only the end of the signal names,
533 if (strcmp (pname, "accessible-name") == 0)
535 s1 = atk_object_get_name (accessible);
537 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
538 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
540 else if (strcmp (pname, "accessible-description") == 0)
542 s1 = atk_object_get_description (accessible);
544 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
545 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
547 else if (strcmp (pname, "accessible-parent") == 0)
549 otemp = atk_object_get_parent (accessible);
551 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
552 "(so)", otemp, append_object);
554 else if (strcmp (pname, "accessible-role") == 0)
556 i = atk_object_get_role (accessible);
557 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
558 DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
560 else if (strcmp (pname, "accessible-table-summary") == 0)
562 otemp = atk_table_get_summary (ATK_TABLE (accessible));
564 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
565 "(so)", otemp, append_object);
567 else if (strcmp (pname, "accessible-table-column-header") == 0)
569 i = g_value_get_int (&(values->new_value));
570 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
572 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
573 "(so)", otemp, append_object);
575 else if (strcmp (pname, "accessible-table-row-header") == 0)
577 i = g_value_get_int (&(values->new_value));
578 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
580 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
581 "(so)", otemp, append_object);
583 else if (strcmp (pname, "accessible-table-row-description") == 0)
585 i = g_value_get_int (&(values->new_value));
586 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
587 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
588 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
590 else if (strcmp (pname, "accessible-table-column-description") == 0)
592 i = g_value_get_int (&(values->new_value));
593 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
594 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
595 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
597 else if (strcmp (pname, "accessible-table-caption-object") == 0)
599 otemp = atk_table_get_caption (ATK_TABLE (accessible));
600 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
601 "(so)", otemp, append_object);
605 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
606 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
611 /*---------------------------------------------------------------------------*/
613 #define STATE_CHANGED "state-changed"
616 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
617 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
618 * the param-name is part of the ATK state-change signal.
621 state_event_listener (GSignalInvocationHint * signal_hint,
622 guint n_param_values,
623 const GValue * param_values, gpointer data)
625 AtkObject *accessible;
629 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
630 pname = g_value_get_string (¶m_values[1]);
632 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
633 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
634 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
636 if (!g_strcmp0 (pname, "defunct") && detail1)
637 spi_register_deregister_object (spi_global_register, G_OBJECT (accessible),
642 /*---------------------------------------------------------------------------*/
645 * The window event listener handles the following ATK signals and forwards
646 * them as AT-SPI events:
648 * window:create -> window:create
649 * window:destroy -> window:destroy
650 * window:minimize -> window:minimize
651 * window:maximize -> window:maximize
652 * window:activate -> window:activate
653 * window:deactivate -> window:deactivate
656 window_event_listener (GSignalInvocationHint * signal_hint,
657 guint n_param_values,
658 const GValue * param_values, gpointer data)
660 AtkObject *accessible;
661 GSignalQuery signal_query;
662 const gchar *name, *s;
664 g_signal_query (signal_hint->signal_id, &signal_query);
665 name = signal_query.signal_name;
667 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
668 s = atk_object_get_name (accessible);
669 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
670 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
675 /*---------------------------------------------------------------------------*/
678 * The document event listener handles the following ATK signals
679 * and converts them to AT-SPI events:
681 * Gtk:AtkDocument:load-complete -> document:load-complete
682 * Gtk:AtkDocument:load-stopped -> document:load-stopped
683 * Gtk:AtkDocument:reload -> document:reload
686 document_event_listener (GSignalInvocationHint * signal_hint,
687 guint n_param_values,
688 const GValue * param_values, gpointer data)
690 AtkObject *accessible;
691 GSignalQuery signal_query;
692 const gchar *name, *s;
694 g_signal_query (signal_hint->signal_id, &signal_query);
695 name = signal_query.signal_name;
697 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
698 s = atk_object_get_name (accessible);
699 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
700 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
705 /*---------------------------------------------------------------------------*/
708 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
709 * this to an AT-SPI event - "object:bounds-changed".
712 bounds_event_listener (GSignalInvocationHint * signal_hint,
713 guint n_param_values,
714 const GValue * param_values, gpointer data)
716 AtkObject *accessible;
717 AtkRectangle *atk_rect;
718 GSignalQuery signal_query;
721 g_signal_query (signal_hint->signal_id, &signal_query);
722 name = signal_query.signal_name;
724 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
726 if (G_VALUE_HOLDS_BOXED (param_values + 1))
728 atk_rect = g_value_get_boxed (param_values + 1);
730 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
731 "(iiii)", atk_rect, append_rect);
736 /*---------------------------------------------------------------------------*/
739 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
740 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
744 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
745 guint n_param_values,
746 const GValue * param_values, gpointer data)
748 AtkObject *accessible;
750 GSignalQuery signal_query;
754 g_signal_query (signal_hint->signal_id, &signal_query);
755 name = signal_query.signal_name;
757 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
758 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
759 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
761 detail1 = atk_object_get_index_in_parent (child);
763 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
764 "(so)", child, append_object);
768 /*---------------------------------------------------------------------------*/
771 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
772 * converts it to the AT-SPI signal - 'object:link-selected'
776 link_selected_event_listener (GSignalInvocationHint * signal_hint,
777 guint n_param_values,
778 const GValue * param_values, gpointer data)
780 AtkObject *accessible;
781 GSignalQuery signal_query;
782 const gchar *name, *minor;
785 g_signal_query (signal_hint->signal_id, &signal_query);
786 name = signal_query.signal_name;
788 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
789 minor = g_quark_to_string (signal_hint->detail);
791 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
792 detail1 = g_value_get_int (¶m_values[1]);
794 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
795 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
799 /*---------------------------------------------------------------------------*/
802 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
803 * converts it to the AT-SPI signal - 'object:text-changed'
804 * This signal is deprecated by Gtk:AtkText:text-insert
805 * and Gtk:AtkText:text-remove
809 text_changed_event_listener (GSignalInvocationHint * signal_hint,
810 guint n_param_values,
811 const GValue * param_values, gpointer data)
813 AtkObject *accessible;
814 GSignalQuery signal_query;
815 const gchar *name, *minor;
817 gint detail1 = 0, detail2 = 0;
819 g_signal_query (signal_hint->signal_id, &signal_query);
820 name = signal_query.signal_name;
822 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
823 minor = g_quark_to_string (signal_hint->detail);
825 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
826 detail1 = g_value_get_int (¶m_values[1]);
828 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
829 detail2 = g_value_get_int (¶m_values[2]);
832 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
834 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
835 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
842 * Handles the ATK signal 'Gtk:AtkText:text-insert' and
843 * converts it to the AT-SPI signal - 'object:text-changed'
847 text_insert_event_listener (GSignalInvocationHint * signal_hint,
848 guint n_param_values,
849 const GValue * param_values, gpointer data)
851 AtkObject *accessible;
852 guint text_changed_signal_id;
853 GSignalQuery signal_query;
856 gint detail1 = 0, detail2 = 0;
858 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
859 /* Get signal name for 'Gtk:AtkText:text-changed' so
860 * we convert it to the AT-SPI signal - 'object:text-changed'
862 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
863 g_signal_query (text_changed_signal_id, &signal_query);
864 name = signal_query.signal_name;
867 /* Add the insert and keep any detail coming from atk */
868 minor = g_quark_to_string (signal_hint->detail);
870 minor = g_strconcat ("insert:", minor, NULL);
872 minor = g_strdup ("insert");
874 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
875 detail1 = g_value_get_int (¶m_values[1]);
877 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
878 detail2 = g_value_get_int (¶m_values[2]);
880 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
881 text = g_value_get_string (¶m_values[3]);
883 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
884 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
890 * Handles the ATK signal 'Gtk:AtkText:text-remove' and
891 * converts it to the AT-SPI signal - 'object:text-changed'
895 text_remove_event_listener (GSignalInvocationHint * signal_hint,
896 guint n_param_values,
897 const GValue * param_values, gpointer data)
899 AtkObject *accessible;
900 guint text_changed_signal_id;
901 GSignalQuery signal_query;
904 gint detail1 = 0, detail2 = 0;
906 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
907 /* Get signal name for 'Gtk:AtkText:text-changed' so
908 * we convert it to the AT-SPI signal - 'object:text-changed'
910 text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
911 g_signal_query (text_changed_signal_id, &signal_query);
912 name = signal_query.signal_name;
914 minor = g_quark_to_string (signal_hint->detail);
916 /* Add the delete and keep any detail coming from atk */
917 minor = g_quark_to_string (signal_hint->detail);
919 minor = g_strconcat ("delete:", minor, NULL);
921 minor = g_strdup ("delete");
923 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
924 detail1 = g_value_get_int (¶m_values[1]);
926 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
927 detail2 = g_value_get_int (¶m_values[2]);
929 if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
930 text = g_value_get_string (¶m_values[3]);
932 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
933 DBUS_TYPE_STRING_AS_STRING, text, append_basic);
939 /*---------------------------------------------------------------------------*/
942 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
943 * converts it to the AT-SPI signal - 'object:text-selection-changed'
947 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
948 guint n_param_values,
949 const GValue * param_values,
952 AtkObject *accessible;
953 GSignalQuery signal_query;
954 const gchar *name, *minor;
955 gint detail1 = 0, detail2 = 0;
957 g_signal_query (signal_hint->signal_id, &signal_query);
958 name = signal_query.signal_name;
960 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
961 minor = g_quark_to_string (signal_hint->detail);
963 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
964 detail1 = g_value_get_int (¶m_values[1]);
966 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
967 detail2 = g_value_get_int (¶m_values[2]);
969 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
970 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
974 /*---------------------------------------------------------------------------*/
977 * Children changed signal converter and forwarder.
979 * Klass (Interface) org.a11y.atspi.Event.Object
980 * Major is the signal name.
981 * Minor is 'add' or 'remove'
982 * detail1 is the index.
984 * any_data is the child reference.
987 children_changed_event_listener (GSignalInvocationHint * signal_hint,
988 guint n_param_values,
989 const GValue * param_values, gpointer data)
991 GSignalQuery signal_query;
992 const gchar *name, *minor;
993 gint detail1 = 0, detail2 = 0;
995 AtkObject *accessible, *ao=NULL;
998 g_signal_query (signal_hint->signal_id, &signal_query);
999 name = signal_query.signal_name;
1001 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1002 minor = g_quark_to_string (signal_hint->detail);
1004 detail1 = g_value_get_uint (param_values + 1);
1005 child = g_value_get_pointer (param_values + 2);
1007 if (ATK_IS_OBJECT (child))
1009 ao = ATK_OBJECT (child);
1010 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1011 "(so)", ao, append_object);
1013 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
1015 ao = atk_object_ref_accessible_child (accessible,
1017 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1018 "(so)", ao, append_object);
1022 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
1023 "(so)", ao, append_object);
1029 /*---------------------------------------------------------------------------*/
1032 * Generic signal converter and forwarder.
1034 * Klass (Interface) org.a11y.atspi.Event.Object
1035 * Major is the signal name.
1042 generic_event_listener (GSignalInvocationHint * signal_hint,
1043 guint n_param_values,
1044 const GValue * param_values, gpointer data)
1046 AtkObject *accessible;
1047 GSignalQuery signal_query;
1049 int detail1 = 0, detail2 = 0;
1051 g_signal_query (signal_hint->signal_id, &signal_query);
1052 name = signal_query.signal_name;
1054 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
1056 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
1057 detail1 = g_value_get_int (¶m_values[1]);
1059 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
1060 detail2 = g_value_get_int (¶m_values[2]);
1062 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
1063 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
1067 /*---------------------------------------------------------------------------*/
1070 * Registers the provided function as a handler for the given signal name
1071 * and stores the signal id returned so that the function may be
1072 * de-registered later.
1075 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
1079 id = atk_add_global_event_listener (listener, signal_name);
1081 if (id > 0) /* id == 0 is a failure */
1082 g_array_append_val (listener_ids, id);
1088 * Initialization for the signal handlers.
1090 * Registers all required signal handlers.
1093 spi_atk_register_event_listeners (void)
1096 * Kludge to make sure the Atk interface types are registered, otherwise
1097 * the AtkText signal handlers below won't get registered
1099 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
1100 AtkObject *bo = atk_no_op_object_new (ao);
1103 g_object_unref (G_OBJECT (bo));
1104 g_object_unref (ao);
1108 g_warning ("atk_bridge: spi_atk-register_event_listeners called multiple times");
1112 /* Register for focus event notifications, and register app with central registry */
1113 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
1115 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
1117 add_signal_listener (property_event_listener,
1118 "Gtk:AtkObject:property-change");
1120 /* window events: we tentative try to register using the old format */
1121 id = add_signal_listener (window_event_listener, "window:create");
1125 /* If we are able to register using the old format, we assume
1126 * that the ATK implementor is managing window events without
1127 * AtkWindow. We can't use the opposite test because after
1128 * including AtkWindow on ATK you would be able to register to
1129 * that event, although the ATK implementor could or not use it.
1132 add_signal_listener (window_event_listener, "window:destroy");
1133 add_signal_listener (window_event_listener, "window:minimize");
1134 add_signal_listener (window_event_listener, "window:maximize");
1135 add_signal_listener (window_event_listener, "window:restore");
1136 add_signal_listener (window_event_listener, "window:activate");
1137 add_signal_listener (window_event_listener, "window:deactivate");
1141 add_signal_listener (window_event_listener, "Atk:AtkWindow:create");
1142 add_signal_listener (window_event_listener, "Atk:AtkWindow:destroy");
1143 add_signal_listener (window_event_listener, "Atk:AtkWindow:minimize");
1144 add_signal_listener (window_event_listener, "Atk:AtkWindow:maximize");
1145 add_signal_listener (window_event_listener, "Atk:AtkWindow:restore");
1146 add_signal_listener (window_event_listener, "Atk:AtkWindow:activate");
1147 add_signal_listener (window_event_listener, "Atk:AtkWindow:deactivate");
1150 add_signal_listener (document_event_listener,
1151 "Gtk:AtkDocument:load-complete");
1152 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
1153 add_signal_listener (document_event_listener,
1154 "Gtk:AtkDocument:load-stopped");
1155 /* TODO Fake this event on the client side */
1156 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
1158 add_signal_listener (active_descendant_event_listener,
1159 "Gtk:AtkObject:active-descendant-changed");
1160 add_signal_listener (bounds_event_listener,
1161 "Gtk:AtkComponent:bounds-changed");
1162 add_signal_listener (text_selection_changed_event_listener,
1163 "Gtk:AtkText:text-selection-changed");
1164 add_signal_listener (text_changed_event_listener,
1165 "Gtk:AtkText:text-changed");
1166 add_signal_listener (text_insert_event_listener,
1167 "Gtk:AtkText:text-insert");
1168 add_signal_listener (text_remove_event_listener,
1169 "Gtk:AtkText:text-remove");
1170 add_signal_listener (link_selected_event_listener,
1171 "Gtk:AtkHypertext:link-selected");
1172 add_signal_listener (generic_event_listener,
1173 "Gtk:AtkObject:visible-data-changed");
1174 add_signal_listener (generic_event_listener,
1175 "Gtk:AtkSelection:selection-changed");
1176 add_signal_listener (generic_event_listener,
1177 "Gtk:AtkText:text-attributes-changed");
1178 add_signal_listener (generic_event_listener,
1179 "Gtk:AtkText:text-caret-moved");
1180 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
1181 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
1182 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
1183 add_signal_listener (generic_event_listener,
1184 "Gtk:AtkTable:column-inserted");
1185 add_signal_listener (generic_event_listener,
1186 "Gtk:AtkTable:column-reordered");
1187 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
1188 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
1189 add_signal_listener (children_changed_event_listener, "Gtk:AtkObject:children-changed");
1192 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1193 "children-changed::add",
1194 (GCallback) toplevel_added_event_listener, NULL);
1196 g_signal_connect (G_OBJECT (spi_global_app_data->root),
1197 "children-changed::remove",
1198 (GCallback) toplevel_removed_event_listener, NULL);
1202 * May add the following listeners to implement preemptive key listening for GTK+
1204 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
1205 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
1207 atk_bridge_key_event_listener_id =
1208 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
1211 /*---------------------------------------------------------------------------*/
1214 * De-registers all ATK signal handlers.
1217 spi_atk_deregister_event_listeners (void)
1220 GArray *ids = listener_ids;
1221 listener_ids = NULL;
1223 if (atk_bridge_focus_tracker_id)
1225 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
1226 atk_bridge_focus_tracker_id = 0;
1231 for (i = 0; i < ids->len; i++)
1233 atk_remove_global_event_listener (g_array_index (ids, guint, i));
1235 g_array_free (ids, TRUE);
1238 if (atk_bridge_key_event_listener_id)
1240 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
1241 atk_bridge_key_event_listener_id = 0;
1245 /*---------------------------------------------------------------------------*/
1248 * TODO This function seems out of place here.
1250 * Emits fake deactivate signals on all top-level windows.
1251 * Used when shutting down AT-SPI, ensuring that all
1252 * windows have been removed on the client side.
1255 spi_atk_tidy_windows (void)
1261 root = atk_get_root ();
1262 n_children = atk_object_get_n_accessible_children (root);
1263 for (i = 0; i < n_children; i++)
1266 AtkStateSet *stateset;
1269 child = atk_object_ref_accessible_child (root, i);
1270 stateset = atk_object_ref_state_set (child);
1272 name = atk_object_get_name (child);
1273 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
1275 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
1276 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1278 g_object_unref (stateset);
1280 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1281 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1282 g_object_unref (child);
1287 spi_event_is_subtype (gchar **needle, gchar **haystack)
1289 while (*haystack && **haystack)
1291 if (g_strcmp0 (*needle, *haystack))
1299 /*END------------------------------------------------------------------------*/