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.
28 #include <droute/droute.h>
31 #include "accessible-register.h"
33 #include "common/spi-dbus.h"
35 static GArray *listener_ids = NULL;
37 static gint atk_bridge_key_event_listener_id;
38 static gint atk_bridge_focus_tracker_id;
40 /*---------------------------------------------------------------------------*/
42 #define ITF_EVENT_OBJECT "org.freedesktop.atspi.Event.Object"
43 #define ITF_EVENT_WINDOW "org.freedesktop.atspi.Event.Window"
44 #define ITF_EVENT_DOCUMENT "org.freedesktop.atspi.Event.Document"
45 #define ITF_EVENT_FOCUS "org.freedesktop.atspi.Event.Focus"
47 /*---------------------------------------------------------------------------*/
49 typedef struct _SpiReentrantCallClosure
53 } SpiReentrantCallClosure;
56 set_reply (DBusPendingCall * pending, void *user_data)
58 SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
60 closure->reply = dbus_pending_call_steal_reply (pending);
61 g_main_loop_quit (closure->loop);
65 send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
67 DBusPendingCall *pending;
68 SpiReentrantCallClosure closure;
70 if (!dbus_connection_send_with_reply (bus, message, &pending, -1))
72 dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
73 closure.loop = g_main_loop_new (NULL, FALSE);
75 g_main_loop_run (closure.loop);
77 g_main_loop_unref (closure.loop);
81 /*---------------------------------------------------------------------------*/
84 * Functionality related to sending device events from the application.
86 * This is used for forwarding key events on to the registry daemon.
90 Accessibility_DeviceEventController_NotifyListenersSync (const
91 Accessibility_DeviceEvent
96 dbus_bool_t consumed = FALSE;
99 dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
101 SPI_DBUS_INTERFACE_DEC,
102 "NotifyListenersSync");
104 dbus_error_init (&error);
105 if (spi_dbus_marshal_deviceEvent (message, key_event))
108 send_and_allow_reentry (spi_global_app_data->bus, message);
112 dbus_error_init (&error);
113 dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN, &consumed,
115 dbus_message_unref (reply);
118 dbus_message_unref (message);
123 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent * keystroke,
124 AtkKeyEventStruct * event)
126 keystroke->id = (dbus_int32_t) event->keyval;
127 keystroke->hw_code = (dbus_int16_t) event->keycode;
128 keystroke->timestamp = (dbus_uint32_t) event->timestamp;
129 keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
134 keystroke->event_string = g_strdup (event->string);
135 c = g_utf8_get_char_validated (event->string, -1);
136 if (c > 0 && g_unichar_isprint (c))
137 keystroke->is_text = TRUE;
139 keystroke->is_text = FALSE;
143 keystroke->event_string = g_strdup ("");
144 keystroke->is_text = FALSE;
148 case (ATK_KEY_EVENT_PRESS):
149 keystroke->type = Accessibility_KEY_PRESSED_EVENT;
151 case (ATK_KEY_EVENT_RELEASE):
152 keystroke->type = Accessibility_KEY_RELEASED_EVENT;
160 ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
161 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
162 (int) keystroke->modifiers, keystroke->event_string,
163 (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
169 spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
172 Accessibility_DeviceEvent key_event;
174 spi_init_keystroke_from_atk_key_event (&key_event, event);
177 Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
179 if (key_event.event_string)
180 g_free (key_event.event_string);
185 /*---------------------------------------------------------------------------*/
188 convert_signal_name (const gchar * s)
190 gchar *ret = g_strdup (s);
195 ret[0] = toupper (ret[0]);
196 while ((t = strchr (ret, '-')) != NULL)
198 memmove (t, t + 1, strlen (t));
205 replace_null (const gint type,
210 case DBUS_TYPE_STRING:
211 case DBUS_TYPE_OBJECT_PATH:
222 append_basic (DBusMessageIter *iter,
228 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
230 val = replace_null ((int) *type, val);
231 dbus_message_iter_append_basic(&sub, (int) *type, &val);
233 dbus_message_iter_close_container(iter, &sub);
237 append_rect (DBusMessageIter *iter,
241 DBusMessageIter variant, sub;
242 const AtkRectangle *rect = (const AtkRectangle *) val;
244 dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
246 dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
248 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
249 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
250 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
251 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
253 dbus_message_iter_close_container (&variant, &sub);
255 dbus_message_iter_close_container(iter, &variant);
259 append_object (DBusMessageIter *iter,
263 spi_object_append_v_reference (iter, ATK_OBJECT (val));
267 signal_name_to_dbus (const gchar *s)
269 gchar *ret = g_strdup (s);
274 ret [0] = toupper (ret [0]);
275 while ((t = strchr (ret, '-')) != NULL)
277 memmove (t, t + 1, strlen (t));
284 * Emits an AT-SPI event.
285 * AT-SPI events names are split into three parts:
287 * This is mapped onto D-Bus events as:
288 * D-Bus Interface:Signal Name:Detail argument
290 * Marshals a basic type into the 'any_data' attribute of
294 emit_event (AtkObject *obj,
298 dbus_int32_t detail1,
299 dbus_int32_t detail2,
302 void (*append_variant) (DBusMessageIter *, const char *, const void *))
304 DBusConnection *bus = spi_global_app_data->bus;
305 const char *path = spi_register_object_to_path (spi_global_register,
310 DBusMessageIter iter, iter_struct;
312 if (!klass) klass = "";
313 if (!major) major = "";
314 if (!minor) minor = "";
315 if (!type) type = "u";
318 * This is very annoying, but as '-' isn't a legal signal
319 * name in D-Bus (Why not??!?) The names need converting
320 * on this side, and again on the client side.
322 cname = signal_name_to_dbus (major);
323 sig = dbus_message_new_signal(path, klass, cname);
326 dbus_message_iter_init_append(sig, &iter);
328 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
329 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
330 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
331 append_variant (&iter, type, val);
332 spi_object_append_reference (&iter, spi_global_app_data->root);
334 dbus_connection_send(bus, sig, NULL);
335 dbus_message_unref(sig);
338 /*---------------------------------------------------------------------------*/
341 * The focus listener handles the ATK 'focus' signal and forwards it
342 * as the AT-SPI event, 'focus:'
345 focus_tracker (AtkObject * accessible)
347 emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
348 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
351 /*---------------------------------------------------------------------------*/
353 #define PCHANGE "PropertyChange"
356 * This handler handles the following ATK signals and
357 * converts them to AT-SPI events:
359 * Gtk:AtkObject:property-change -> object:property-change:(property-name)
361 * The property-name is part of the ATK property-change signal.
364 property_event_listener (GSignalInvocationHint * signal_hint,
365 guint n_param_values,
366 const GValue * param_values, gpointer data)
368 AtkObject *accessible;
369 AtkPropertyValues *values;
371 const gchar *pname = NULL;
377 accessible = g_value_get_object (¶m_values[0]);
378 values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
380 pname = values[0].property_name;
382 /* TODO Could improve this control statement by matching
383 * on only the end of the signal names,
385 if (strcmp (pname, "accessible-name") == 0)
387 s1 = atk_object_get_name (accessible);
389 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
390 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
392 else if (strcmp (pname, "accessible-description") == 0)
394 s1 = atk_object_get_description (accessible);
396 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
397 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
399 else if (strcmp (pname, "accessible-parent") == 0)
401 otemp = atk_object_get_parent (accessible);
403 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
404 "(so)", otemp, append_object);
406 else if (strcmp (pname, "accessible-role") == 0)
408 dbus_uint32_t role = atk_object_get_role (accessible);
409 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
410 DBUS_TYPE_UINT32_AS_STRING, role, append_basic);
412 else if (strcmp (pname, "accessible-table-summary") == 0)
414 otemp = atk_table_get_summary (ATK_TABLE (accessible));
416 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
417 "(so)", otemp, append_object);
419 else if (strcmp (pname, "accessible-table-column-header") == 0)
421 i = g_value_get_int (&(values->new_value));
422 otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
424 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
425 "(so)", otemp, append_object);
427 else if (strcmp (pname, "accessible-table-row-header") == 0)
429 i = g_value_get_int (&(values->new_value));
430 otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
432 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
433 "(so)", otemp, append_object);
435 else if (strcmp (pname, "accessible-table-row-description") == 0)
437 i = g_value_get_int (&(values->new_value));
438 s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
439 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
440 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
442 else if (strcmp (pname, "accessible-table-column-description") == 0)
444 i = g_value_get_int (&(values->new_value));
445 s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
446 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
447 DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
449 else if (strcmp (pname, "accessible-table-caption-object") == 0)
451 otemp = atk_table_get_caption (ATK_TABLE (accessible));
452 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
453 "(so)", otemp, append_object);
457 emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
458 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
463 /*---------------------------------------------------------------------------*/
465 #define STATE_CHANGED "state-changed"
468 * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
469 * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
470 * the param-name is part of the ATK state-change signal.
473 state_event_listener (GSignalInvocationHint * signal_hint,
474 guint n_param_values,
475 const GValue * param_values, gpointer data)
477 AtkObject *accessible;
481 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
482 pname = g_strdup (g_value_get_string (¶m_values[1]));
484 /* TODO - Possibly ignore a change to the 'defunct' state.
485 * This is because without reference counting defunct objects should be removed.
487 detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
488 emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
489 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
494 /*---------------------------------------------------------------------------*/
497 * The window event listener handles the following ATK signals and forwards
498 * them as AT-SPI events:
500 * window:create -> window:create
501 * window:destroy -> window:destroy
502 * window:minimize -> window:minimize
503 * window:maximize -> window:maximize
504 * window:activate -> window:activate
505 * window:deactivate -> window:deactivate
508 window_event_listener (GSignalInvocationHint * signal_hint,
509 guint n_param_values,
510 const GValue * param_values, gpointer data)
512 AtkObject *accessible;
513 GSignalQuery signal_query;
514 const gchar *name, *s;
516 g_signal_query (signal_hint->signal_id, &signal_query);
517 name = signal_query.signal_name;
519 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
520 s = atk_object_get_name (accessible);
521 emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
522 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
527 /*---------------------------------------------------------------------------*/
530 * The document event listener handles the following ATK signals
531 * and converts them to AT-SPI events:
533 * Gtk:AtkDocument:load-complete -> document:load-complete
534 * Gtk:AtkDocument:load-stopped -> document:load-stopped
535 * Gtk:AtkDocument:reload -> document:reload
538 document_event_listener (GSignalInvocationHint * signal_hint,
539 guint n_param_values,
540 const GValue * param_values, gpointer data)
542 AtkObject *accessible;
543 GSignalQuery signal_query;
544 const gchar *name, *s;
546 g_signal_query (signal_hint->signal_id, &signal_query);
547 name = signal_query.signal_name;
549 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
550 s = atk_object_get_name (accessible);
551 emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", 0, 0,
552 DBUS_TYPE_STRING_AS_STRING, s, append_basic);
557 /*---------------------------------------------------------------------------*/
560 * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
561 * this to an AT-SPI event - "object:bounds-changed".
564 bounds_event_listener (GSignalInvocationHint * signal_hint,
565 guint n_param_values,
566 const GValue * param_values, gpointer data)
568 AtkObject *accessible;
569 AtkRectangle *atk_rect;
570 GSignalQuery signal_query;
571 const gchar *name, *s;
573 g_signal_query (signal_hint->signal_id, &signal_query);
574 name = signal_query.signal_name;
576 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
578 if (G_VALUE_HOLDS_BOXED (param_values + 1))
580 atk_rect = g_value_get_boxed (param_values + 1);
582 emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
583 "(iiii)", atk_rect, append_rect);
588 /*---------------------------------------------------------------------------*/
591 * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
592 * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
596 active_descendant_event_listener (GSignalInvocationHint * signal_hint,
597 guint n_param_values,
598 const GValue * param_values, gpointer data)
600 AtkObject *accessible;
602 GSignalQuery signal_query;
603 const gchar *name, *minor;
606 g_signal_query (signal_hint->signal_id, &signal_query);
607 name = signal_query.signal_name;
609 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
610 child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
611 g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
612 minor = g_quark_to_string (signal_hint->detail);
614 detail1 = atk_object_get_index_in_parent (child);
616 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
617 "(so)", child, append_object);
621 /*---------------------------------------------------------------------------*/
624 * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
625 * converts it to the AT-SPI signal - 'object:link-selected'
629 link_selected_event_listener (GSignalInvocationHint * signal_hint,
630 guint n_param_values,
631 const GValue * param_values, gpointer data)
633 AtkObject *accessible;
634 GSignalQuery signal_query;
635 const gchar *name, *minor;
638 g_signal_query (signal_hint->signal_id, &signal_query);
639 name = signal_query.signal_name;
641 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
642 minor = g_quark_to_string (signal_hint->detail);
644 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
645 detail1 = g_value_get_int (¶m_values[1]);
647 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
648 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
652 /*---------------------------------------------------------------------------*/
655 * Handles the ATK signal 'Gtk:AtkText:text-changed' and
656 * converts it to the AT-SPI signal - 'object:text-changed'
660 text_changed_event_listener (GSignalInvocationHint * signal_hint,
661 guint n_param_values,
662 const GValue * param_values, gpointer data)
664 AtkObject *accessible;
665 GSignalQuery signal_query;
666 const gchar *name, *minor;
668 gint detail1, detail2;
670 g_signal_query (signal_hint->signal_id, &signal_query);
671 name = signal_query.signal_name;
673 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
674 minor = g_quark_to_string (signal_hint->detail);
676 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
677 detail1 = g_value_get_int (¶m_values[1]);
679 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
680 detail2 = g_value_get_int (¶m_values[2]);
683 atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
685 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
686 DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
690 /*---------------------------------------------------------------------------*/
693 * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
694 * converts it to the AT-SPI signal - 'object:text-selection-changed'
698 text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
699 guint n_param_values,
700 const GValue * param_values,
703 AtkObject *accessible;
704 GSignalQuery signal_query;
705 const gchar *name, *minor;
706 gint detail1, detail2;
708 g_signal_query (signal_hint->signal_id, &signal_query);
709 name = signal_query.signal_name;
711 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
712 minor = g_quark_to_string (signal_hint->detail);
714 if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
715 detail1 = g_value_get_int (¶m_values[1]);
717 if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
718 detail2 = g_value_get_int (¶m_values[2]);
720 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
721 DBUS_TYPE_STRING_AS_STRING, "", append_basic);
725 /*---------------------------------------------------------------------------*/
728 * Children changed signal converter and forwarder.
730 * Klass (Interface) org.freedesktop.atspi.Event.Object
731 * Major is the signal name.
732 * Minor is 'add' or 'remove'
733 * detail1 is the index.
735 * any_data is the child reference.
738 children_changed_event_listener (GSignalInvocationHint * signal_hint,
739 guint n_param_values,
740 const GValue * param_values, gpointer data)
742 GSignalQuery signal_query;
743 const gchar *name, *minor;
744 gint detail1, detail2 = 0;
746 AtkObject *accessible, *ao=NULL;
749 g_signal_query (signal_hint->signal_id, &signal_query);
750 name = signal_query.signal_name;
752 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
753 minor = g_quark_to_string (signal_hint->detail);
755 detail1 = g_value_get_uint (param_values + 1);
756 child = g_value_get_pointer (param_values + 2);
758 if (ATK_IS_OBJECT (child))
760 ao = ATK_OBJECT (child);
761 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
762 "(so)", ao, append_object);
764 else if ((minor != NULL) && (strcmp (minor, "add") == 0))
766 ao = atk_object_ref_accessible_child (accessible,
768 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
769 "(so)", ao, append_object);
773 emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
774 "(so)", ao, append_object);
780 /*---------------------------------------------------------------------------*/
783 toplevel_added_event_listener (AtkObject * accessible,
784 guint index, AtkObject * child)
786 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "add", index, 0,
787 "(so)", child, append_object);
791 toplevel_removed_event_listener (AtkObject * accessible,
792 guint index, AtkObject * child)
794 emit_event (accessible, ITF_EVENT_OBJECT, "children-changed", "remove", index, 0,
795 "(so)", child, append_object);
798 /*---------------------------------------------------------------------------*/
801 * Generic signal converter and forwarder.
803 * Klass (Interface) org.freedesktop.atspi.Event.Object
804 * Major is the signal name.
811 generic_event_listener (GSignalInvocationHint * signal_hint,
812 guint n_param_values,
813 const GValue * param_values, gpointer data)
815 AtkObject *accessible;
816 GSignalQuery signal_query;
818 int detail1 = 0, detail2 = 0;
820 g_signal_query (signal_hint->signal_id, &signal_query);
821 name = signal_query.signal_name;
823 accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
825 if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
826 detail1 = g_value_get_int (¶m_values[1]);
828 if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
829 detail2 = g_value_get_int (¶m_values[2]);
831 emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
832 DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
836 /*---------------------------------------------------------------------------*/
839 * Registers the provided function as a handler for the given signal name
840 * and stores the signal id returned so that the function may be
841 * de-registered later.
844 add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
848 id = atk_add_global_event_listener (listener, signal_name);
849 g_array_append_val (listener_ids, id);
853 * Initialization for the signal handlers.
855 * Registers all required signal handlers.
858 spi_atk_register_event_listeners (void)
861 * Kludge to make sure the Atk interface types are registered, otherwise
862 * the AtkText signal handlers below won't get registered
864 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
865 AtkObject *bo = atk_no_op_object_new (ao);
867 g_object_unref (G_OBJECT (bo));
870 /* Register for focus event notifications, and register app with central registry */
871 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
873 atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
875 add_signal_listener (property_event_listener,
876 "Gtk:AtkObject:property-change");
877 add_signal_listener (window_event_listener, "window:create");
878 add_signal_listener (window_event_listener, "window:destroy");
879 add_signal_listener (window_event_listener, "window:minimize");
880 add_signal_listener (window_event_listener, "window:maximize");
881 add_signal_listener (window_event_listener, "window:restore");
882 add_signal_listener (window_event_listener, "window:activate");
883 add_signal_listener (window_event_listener, "window:deactivate");
884 add_signal_listener (document_event_listener,
885 "Gtk:AtkDocument:load-complete");
886 add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
887 add_signal_listener (document_event_listener,
888 "Gtk:AtkDocument:load-stopped");
889 /* TODO Fake this event on the client side */
890 add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
892 add_signal_listener (active_descendant_event_listener,
893 "Gtk:AtkObject:active-descendant-changed");
894 add_signal_listener (bounds_event_listener,
895 "Gtk:AtkComponent:bounds-changed");
896 add_signal_listener (text_selection_changed_event_listener,
897 "Gtk:AtkText:text-selection-changed");
898 add_signal_listener (text_changed_event_listener,
899 "Gtk:AtkText:text-changed");
900 add_signal_listener (link_selected_event_listener,
901 "Gtk:AtkHypertext:link-selected");
902 add_signal_listener (generic_event_listener,
903 "Gtk:AtkObject:visible-data-changed");
904 add_signal_listener (generic_event_listener,
905 "Gtk:AtkSelection:selection-changed");
906 add_signal_listener (generic_event_listener,
907 "Gtk:AtkText:text-attributes-changed");
908 add_signal_listener (generic_event_listener,
909 "Gtk:AtkText:text-caret-moved");
910 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
911 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
912 add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
913 add_signal_listener (generic_event_listener,
914 "Gtk:AtkTable:column-inserted");
915 add_signal_listener (generic_event_listener,
916 "Gtk:AtkTable:column-reordered");
917 add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
918 add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
920 /* Children signal listeners */
921 atk_add_global_event_listener (children_changed_event_listener,
922 "Gtk:AtkObject:children-changed");
925 g_signal_connect (G_OBJECT (spi_global_app_data->root),
926 "children-changed::add",
927 (GCallback) toplevel_added_event_listener, NULL);
929 g_signal_connect (G_OBJECT (spi_global_app_data->root),
930 "children-changed::remove",
931 (GCallback) toplevel_removed_event_listener, NULL);
935 * May add the following listeners to implement preemptive key listening for GTK+
937 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
938 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
940 atk_bridge_key_event_listener_id =
941 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
944 /*---------------------------------------------------------------------------*/
947 * De-registers all ATK signal handlers.
950 spi_atk_deregister_event_listeners (void)
953 GArray *ids = listener_ids;
956 if (atk_bridge_focus_tracker_id)
957 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
959 for (i = 0; ids && i < ids->len; i++)
961 atk_remove_global_event_listener (g_array_index (ids, guint, i));
964 if (atk_bridge_key_event_listener_id)
965 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
968 /*---------------------------------------------------------------------------*/
971 * TODO This function seems out of place here.
973 * Emits fake deactivate signals on all top-level windows.
974 * Used when shutting down AT-SPI, ensuring that all
975 * windows have been removed on the client side.
978 spi_atk_tidy_windows (void)
984 root = atk_get_root ();
985 n_children = atk_object_get_n_accessible_children (root);
986 for (i = 0; i < n_children; i++)
989 AtkStateSet *stateset;
992 child = atk_object_ref_accessible_child (root, i);
993 stateset = atk_object_ref_state_set (child);
995 name = atk_object_get_name (child);
996 if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
998 emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
999 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1001 g_object_unref (stateset);
1003 emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
1004 DBUS_TYPE_STRING_AS_STRING, name, append_basic);
1005 g_object_unref (child);
1009 /*END------------------------------------------------------------------------*/