2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2001 Sun Microsystems Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
26 #include <libbonobo.h>
27 #include <orbit/orbit.h>
29 #include <atk/atkobject.h>
30 #include <atk/atknoopobject.h>
31 #include <libspi/Accessibility.h>
32 #include "accessible.h"
33 #include "application.h"
35 #undef SPI_BRIDGE_DEBUG
37 static CORBA_Environment ev;
38 static Accessibility_Registry registry;
39 static SpiApplication *this_app = NULL;
41 static void spi_atk_bridge_exit_func (void);
42 static void spi_atk_register_event_listeners (void);
43 static gboolean spi_atk_bridge_idle_init (gpointer user_data);
44 static void spi_atk_bridge_focus_tracker (AtkObject *object);
45 static gboolean spi_atk_bridge_property_event_listener (GSignalInvocationHint *signal_hint,
47 const GValue *param_values,
49 static gboolean spi_atk_bridge_signal_listener (GSignalInvocationHint *signal_hint,
51 const GValue *param_values,
53 static gint spi_atk_bridge_key_listener (AtkKeyEventStruct *event,
57 * These exported symbols are hooked by gnome-program
58 * to provide automatic module initialization and shutdown.
60 extern void gnome_accessibility_module_init (void);
61 extern void gnome_accessibility_module_shutdown (void);
63 static int atk_bridge_initialized = FALSE;
64 static guint atk_bridge_focus_tracker_id = 0;
65 static guint atk_bridge_key_event_listener_id = 0;
66 static guint idle_init_id = 0;
67 static GArray *listener_ids = NULL;
70 gtk_module_init (gint *argc, gchar **argv[])
74 if (atk_bridge_initialized)
78 atk_bridge_initialized = TRUE;
80 if (!bonobo_init (argc, *argv))
82 g_error ("Could not initialize Bonobo");
85 CORBA_exception_init(&ev);
87 registry = bonobo_activation_activate_from_id (
88 "OAFIID:Accessibility_Registry:proto0.1", 0, NULL, &ev);
90 if (ev._major != CORBA_NO_EXCEPTION)
92 g_error ("Accessibility app error: exception during "
93 "registry activation from id: %s\n",
94 CORBA_exception_id (&ev));
95 CORBA_exception_free (&ev);
98 if (CORBA_Object_is_nil (registry, &ev))
100 g_error ("Could not locate registry");
105 /* Create the accessible application server object */
107 this_app = spi_application_new (atk_get_root ());
109 fprintf (stderr, "About to register application\n");
111 Accessibility_Registry_registerApplication (registry,
112 BONOBO_OBJREF (this_app),
115 g_atexit (spi_atk_bridge_exit_func);
117 idle_init_id = g_idle_add (spi_atk_bridge_idle_init, NULL);
123 spi_atk_bridge_idle_init (gpointer user_data)
127 spi_atk_register_event_listeners ();
129 fprintf (stderr, "Application registered & listening\n");
135 add_signal_listener (const char *signal_name)
139 id = atk_add_global_event_listener (
140 spi_atk_bridge_signal_listener, signal_name);
142 g_array_append_val (listener_ids, id);
146 spi_atk_register_event_listeners (void)
149 * kludge to make sure the Atk interface types are registered, otherwise
150 * the AtkText signal handlers below won't get registered
153 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
154 AtkObject *bo = atk_no_op_object_new (ao);
156 /* Register for focus event notifications, and register app with central registry */
158 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
160 atk_bridge_focus_tracker_id = atk_add_focus_tracker (spi_atk_bridge_focus_tracker);
162 id = atk_add_global_event_listener (spi_atk_bridge_property_event_listener,
163 "Gtk:AtkObject:property-change");
164 g_array_append_val (listener_ids, id);
166 add_signal_listener ("Gtk:AtkObject:children-changed");
167 add_signal_listener ("Gtk:AtkObject:visible-data-changed");
168 add_signal_listener ("Gtk:AtkSelection:selection-changed");
169 add_signal_listener ("Gtk:AtkText:text-selection-changed");
170 add_signal_listener ("Gtk:AtkText:text-changed");
171 add_signal_listener ("Gtk:AtkText:text-caret-moved");
172 add_signal_listener ("Gtk:AtkTable:row-inserted");
173 add_signal_listener ("Gtk:AtkTable:row-reordered");
174 add_signal_listener ("Gtk:AtkTable:row-deleted");
175 add_signal_listener ("Gtk:AtkTable:column-inserted");
176 add_signal_listener ("Gtk:AtkTable:column-reordered");
177 add_signal_listener ("Gtk:AtkTable:column-deleted");
178 add_signal_listener ("Gtk:AtkTable:model-changed");
180 * May add the following listeners to implement preemptive key listening for GTK+
182 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
183 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
185 atk_bridge_key_event_listener_id = atk_add_key_event_listener (
186 spi_atk_bridge_key_listener, NULL);
188 g_object_unref (G_OBJECT (bo));
193 deregister_application (BonoboObject *app)
195 Accessibility_Registry_deregisterApplication (
196 registry, BONOBO_OBJREF (app), &ev);
198 registry = bonobo_object_release_unref (registry, &ev);
200 app = bonobo_object_unref (app);
204 spi_atk_bridge_exit_func (void)
206 BonoboObject *app = (BonoboObject *) this_app;
208 fprintf (stderr, "exiting bridge\n");
217 * FIXME: this may be incorrect for apps that do their own bonobo
218 * shutdown, until we can explicitly shutdown to get the ordering
221 if (!bonobo_is_initialized ())
223 fprintf (stderr, "Re-initializing bonobo\n");
224 g_assert (bonobo_init (0, NULL));
225 g_assert (bonobo_activate ());
228 deregister_application (app);
230 fprintf (stderr, "bridge exit func complete.\n");
232 if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
234 g_assert (!bonobo_debug_shutdown ());
239 gnome_accessibility_module_init (void)
241 gtk_module_init (NULL, NULL);
243 g_print("Atk Accessibilty bridge initialized\n");
247 gnome_accessibility_module_shutdown (void)
249 BonoboObject *app = (BonoboObject *) this_app;
251 if (!atk_bridge_initialized)
255 atk_bridge_initialized = FALSE;
258 g_print("Atk Accessibilty bridge shutdown\n");
262 g_source_remove (idle_init_id);
268 GArray *ids = listener_ids;
271 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
273 for (i = 0; ids && i < ids->len; i++)
275 atk_remove_global_event_listener (g_array_index (ids, guint, i));
278 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
281 deregister_application (app);
285 spi_atk_bridge_focus_tracker (AtkObject *object)
287 SpiAccessible *source;
288 Accessibility_Event e;
290 source = spi_accessible_new (object);
293 e.source = BONOBO_OBJREF (source);
297 Accessibility_Registry_notifyEvent (registry, &e, &ev);
299 CORBA_exception_free (&ev);
303 spi_atk_emit_eventv (GObject *gobject,
304 unsigned long detail1,
305 unsigned long detail2,
306 const char *format, ...)
309 Accessibility_Event e;
310 SpiAccessible *source;
312 #ifdef SPI_BRIDGE_DEBUG
316 va_start (args, format);
318 if (ATK_IS_IMPLEMENTOR (gobject))
320 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
321 source = spi_accessible_new (aobject);
322 g_object_unref (G_OBJECT (aobject));
324 else if (ATK_IS_OBJECT (gobject))
326 aobject = ATK_OBJECT (gobject);
327 source = spi_accessible_new (aobject);
333 g_error ("received property-change event from non-AtkImplementor");
338 e.type = g_strdup_vprintf (format, args);
339 e.source = BONOBO_OBJREF (source);
343 #ifdef SPI_BRIDGE_DEBUG
344 s = Accessibility_Accessible__get_name (BONOBO_OBJREF (source), &ev);
345 g_warning ("Emitting event '%s' (%lu, %lu) on %s",
346 e.type, e.detail1, e.detail2, s);
350 Accessibility_Registry_notifyEvent (registry, &e, &ev);
352 CORBA_exception_free (&ev);
361 spi_atk_bridge_property_event_listener (GSignalInvocationHint *signal_hint,
362 guint n_param_values,
363 const GValue *param_values,
366 AtkPropertyValues *values;
369 #ifdef SPI_BRIDGE_DEBUG
370 GSignalQuery signal_query;
374 g_signal_query (signal_hint->signal_id, &signal_query);
375 name = signal_query.signal_name;
377 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
378 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
379 fprintf (stderr, "Received (property) signal %s:%s from object %s (gail %s)\n",
380 g_type_name (signal_query.itype), name, s, s2);
383 gobject = g_value_get_object (param_values + 0);
384 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
386 spi_atk_emit_eventv (gobject, 0, 0, "object:property-change:%s", values->property_name);
391 #if THIS_WILL_EVER_BE_USED
393 spi_atk_bridge_state_event_listener (GSignalInvocationHint *signal_hint,
394 guint n_param_values,
395 const GValue *param_values,
399 AtkPropertyValues *values;
400 #ifdef SPI_BRIDGE_DEBUG
401 GSignalQuery signal_query;
404 g_signal_query (signal_hint->signal_id, &signal_query);
405 name = signal_query.signal_name;
406 fprintf (stderr, "Received (state) signal %s:%s\n",
407 g_type_name (signal_query.itype), name);
410 gobject = g_value_get_object (param_values + 0);
411 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
413 spi_atk_emit_eventv (gobject,
414 (unsigned long) values->old_value.data[0].v_ulong,
415 (unsigned long) values->new_value.data[0].v_ulong,
416 "object:%s:?", values->property_name);
423 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent *keystroke,
424 AtkKeyEventStruct *event)
429 g_print ("event %c (%d)\n", (int) event->keyval, (int) event->keycode);
435 g_print ("WARNING: NULL key event!");
438 keystroke->id = (CORBA_long) event->keyval;
439 keystroke->hw_code = (CORBA_short) event->keycode;
440 keystroke->timestamp = (CORBA_unsigned_long) event->timestamp;
441 keystroke->modifiers = (CORBA_unsigned_short) (event->state & 0xFFFF);
444 keystroke->event_string = CORBA_string_dup (event->string);
445 keystroke->is_text = CORBA_TRUE;
449 keystroke->event_string = CORBA_string_dup ("");
450 keystroke->is_text = CORBA_FALSE;
454 case (ATK_KEY_EVENT_PRESS):
455 keystroke->type = Accessibility_KEY_PRESSED;
457 case (ATK_KEY_EVENT_RELEASE):
458 keystroke->type = Accessibility_KEY_RELEASED;
465 g_print ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
466 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
467 (int) keystroke->modifiers,
468 keystroke->event_string, (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
473 spi_atk_bridge_key_listener (AtkKeyEventStruct *event, gpointer data)
475 CORBA_boolean result;
476 Accessibility_DeviceEvent key_event;
477 Accessibility_DeviceEventController controller =
478 Accessibility_Registry_getDeviceEventController (registry, &ev);
482 g_warning ("failure: no deviceeventcontroller found\n");
483 CORBA_exception_free (&ev);
489 spi_init_keystroke_from_atk_key_event (&key_event, event);
491 result = Accessibility_DeviceEventController_notifyListenersSync (
492 controller, &key_event, &ev);
494 CORBA_exception_free (&ev);
501 spi_atk_bridge_signal_listener (GSignalInvocationHint *signal_hint,
502 guint n_param_values,
503 const GValue *param_values,
507 GSignalQuery signal_query;
509 gint detail1 = 0, detail2 = 0;
510 #ifdef SPI_BRIDGE_DEBUG
514 g_signal_query (signal_hint->signal_id, &signal_query);
516 name = signal_query.signal_name;
518 #ifdef SPI_BRIDGE_DEBUG
519 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
520 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
521 fprintf (stderr, "Received signal %s:%s from object %s (gail %s)\n",
522 g_type_name (signal_query.itype), name, s, s2);
525 gobject = g_value_get_object (param_values + 0);
526 if (G_VALUE_TYPE (param_values + 1) == G_TYPE_INT)
527 detail1 = g_value_get_int (param_values + 1);
528 if (G_VALUE_TYPE (param_values + 2) == G_TYPE_INT)
529 detail2 = g_value_get_int (param_values + 2);
531 spi_atk_emit_eventv (gobject, detail1, detail2, "object:%s", name);