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,
56 /* For automatic libgnome init */
57 extern void gnome_accessibility_module_init (void);
58 extern void gnome_accessibility_module_shutdown (void);
60 static int atk_bridge_initialized = FALSE;
61 static guint atk_bridge_focus_tracker_id = 0;
62 static guint atk_bridge_key_event_listener_id = 0;
63 static guint idle_init_id = 0;
64 static GArray *listener_ids = NULL;
67 * These exported symbols are hooked by gnome-program
68 * to provide automatic module initialization and shutdown.
70 extern void gnome_accessibility_module_init (void);
71 extern void gnome_accessibility_module_shutdown (void);
74 atk_bridge_init (gint *argc, gchar **argv[])
78 if (atk_bridge_initialized)
82 atk_bridge_initialized = TRUE;
84 if (!bonobo_init (argc, argv ? *argv : NULL))
86 g_error ("Could not initialize Bonobo");
89 CORBA_exception_init(&ev);
91 registry = bonobo_activation_activate_from_id (
92 "OAFIID:Accessibility_Registry:proto0.1", 0, NULL, &ev);
94 if (ev._major != CORBA_NO_EXCEPTION)
96 g_error ("Accessibility app error: exception during "
97 "registry activation from id: %s\n",
98 CORBA_exception_id (&ev));
99 CORBA_exception_free (&ev);
102 if (registry == CORBA_OBJECT_NIL)
104 g_error ("Could not locate registry");
109 /* Create the accessible application server object */
111 this_app = spi_application_new (atk_get_root ());
113 fprintf (stderr, "About to register application\n");
115 Accessibility_Registry_registerApplication (registry,
116 BONOBO_OBJREF (this_app),
119 g_atexit (spi_atk_bridge_exit_func);
121 idle_init_id = g_idle_add (spi_atk_bridge_idle_init, NULL);
127 gtk_module_init (gint *argc, gchar **argv[])
129 return atk_bridge_init (argc, argv);
133 spi_atk_bridge_idle_init (gpointer user_data)
137 spi_atk_register_event_listeners ();
139 fprintf (stderr, "Application registered & listening\n");
145 add_signal_listener (const char *signal_name)
149 id = atk_add_global_event_listener (
150 spi_atk_bridge_signal_listener, signal_name);
152 g_array_append_val (listener_ids, id);
156 spi_atk_register_event_listeners (void)
159 * kludge to make sure the Atk interface types are registered, otherwise
160 * the AtkText signal handlers below won't get registered
163 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
164 AtkObject *bo = atk_no_op_object_new (ao);
166 /* Register for focus event notifications, and register app with central registry */
168 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
170 atk_bridge_focus_tracker_id = atk_add_focus_tracker (spi_atk_bridge_focus_tracker);
172 id = atk_add_global_event_listener (spi_atk_bridge_property_event_listener,
173 "Gtk:AtkObject:property-change");
174 g_array_append_val (listener_ids, id);
176 add_signal_listener ("Gtk:AtkObject:children-changed");
177 add_signal_listener ("Gtk:AtkObject:visible-data-changed");
178 add_signal_listener ("Gtk:AtkSelection:selection-changed");
179 add_signal_listener ("Gtk:AtkText:text-selection-changed");
180 add_signal_listener ("Gtk:AtkText:text-changed");
181 add_signal_listener ("Gtk:AtkText:text-caret-moved");
182 add_signal_listener ("Gtk:AtkTable:row-inserted");
183 add_signal_listener ("Gtk:AtkTable:row-reordered");
184 add_signal_listener ("Gtk:AtkTable:row-deleted");
185 add_signal_listener ("Gtk:AtkTable:column-inserted");
186 add_signal_listener ("Gtk:AtkTable:column-reordered");
187 add_signal_listener ("Gtk:AtkTable:column-deleted");
188 add_signal_listener ("Gtk:AtkTable:model-changed");
190 * May add the following listeners to implement preemptive key listening for GTK+
192 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
193 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
195 atk_bridge_key_event_listener_id = atk_add_key_event_listener (
196 spi_atk_bridge_key_listener, NULL);
198 g_object_unref (G_OBJECT (bo));
203 deregister_application (BonoboObject *app)
205 Accessibility_Registry_deregisterApplication (
206 registry, BONOBO_OBJREF (app), &ev);
208 registry = bonobo_object_release_unref (registry, &ev);
210 app = bonobo_object_unref (app);
214 spi_atk_bridge_exit_func (void)
216 BonoboObject *app = (BonoboObject *) this_app;
218 fprintf (stderr, "exiting bridge\n");
227 * FIXME: this may be incorrect for apps that do their own bonobo
228 * shutdown, until we can explicitly shutdown to get the ordering
231 if (!bonobo_is_initialized ())
233 fprintf (stderr, "Re-initializing bonobo\n");
234 g_assert (bonobo_init (0, NULL));
235 g_assert (bonobo_activate ());
238 deregister_application (app);
240 fprintf (stderr, "bridge exit func complete.\n");
242 if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
244 g_assert (!bonobo_debug_shutdown ());
249 gnome_accessibility_module_init (void)
251 atk_bridge_init (NULL, NULL);
253 g_print("Atk Accessibilty bridge initialized\n");
257 gnome_accessibility_module_shutdown (void)
259 BonoboObject *app = (BonoboObject *) this_app;
261 if (!atk_bridge_initialized)
265 atk_bridge_initialized = FALSE;
268 g_print("Atk Accessibilty bridge shutdown\n");
272 g_source_remove (idle_init_id);
278 GArray *ids = listener_ids;
281 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
283 for (i = 0; ids && i < ids->len; i++)
285 atk_remove_global_event_listener (g_array_index (ids, guint, i));
288 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
291 deregister_application (app);
295 spi_atk_bridge_focus_tracker (AtkObject *object)
297 SpiAccessible *source;
298 Accessibility_Event e;
300 source = spi_accessible_new (object);
303 e.source = BONOBO_OBJREF (source);
307 Accessibility_Registry_notifyEvent (registry, &e, &ev);
309 CORBA_exception_free (&ev);
313 spi_atk_emit_eventv (GObject *gobject,
314 unsigned long detail1,
315 unsigned long detail2,
316 const char *format, ...)
319 Accessibility_Event e;
320 SpiAccessible *source;
322 #ifdef SPI_BRIDGE_DEBUG
326 va_start (args, format);
328 if (ATK_IS_IMPLEMENTOR (gobject))
330 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
331 source = spi_accessible_new (aobject);
332 g_object_unref (G_OBJECT (aobject));
334 else if (ATK_IS_OBJECT (gobject))
336 aobject = ATK_OBJECT (gobject);
337 source = spi_accessible_new (aobject);
343 g_error ("received property-change event from non-AtkImplementor");
348 e.type = g_strdup_vprintf (format, args);
349 e.source = BONOBO_OBJREF (source);
353 #ifdef SPI_BRIDGE_DEBUG
354 s = Accessibility_Accessible__get_name (BONOBO_OBJREF (source), &ev);
355 g_warning ("Emitting event '%s' (%lu, %lu) on %s",
356 e.type, e.detail1, e.detail2, s);
360 Accessibility_Registry_notifyEvent (registry, &e, &ev);
362 CORBA_exception_free (&ev);
371 spi_atk_bridge_property_event_listener (GSignalInvocationHint *signal_hint,
372 guint n_param_values,
373 const GValue *param_values,
376 AtkPropertyValues *values;
379 #ifdef SPI_BRIDGE_DEBUG
380 GSignalQuery signal_query;
384 g_signal_query (signal_hint->signal_id, &signal_query);
385 name = signal_query.signal_name;
387 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
388 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
389 fprintf (stderr, "Received (property) signal %s:%s from object %s (gail %s)\n",
390 g_type_name (signal_query.itype), name, s, s2);
393 gobject = g_value_get_object (param_values + 0);
394 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
396 spi_atk_emit_eventv (gobject, 0, 0, "object:property-change:%s", values->property_name);
401 #if THIS_WILL_EVER_BE_USED
403 spi_atk_bridge_state_event_listener (GSignalInvocationHint *signal_hint,
404 guint n_param_values,
405 const GValue *param_values,
409 AtkPropertyValues *values;
410 #ifdef SPI_BRIDGE_DEBUG
411 GSignalQuery signal_query;
414 g_signal_query (signal_hint->signal_id, &signal_query);
415 name = signal_query.signal_name;
416 fprintf (stderr, "Received (state) signal %s:%s\n",
417 g_type_name (signal_query.itype), name);
420 gobject = g_value_get_object (param_values + 0);
421 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
423 spi_atk_emit_eventv (gobject,
424 (unsigned long) values->old_value.data[0].v_ulong,
425 (unsigned long) values->new_value.data[0].v_ulong,
426 "object:%s:?", values->property_name);
433 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent *keystroke,
434 AtkKeyEventStruct *event)
439 g_print ("event %c (%d)\n", (int) event->keyval, (int) event->keycode);
445 g_print ("WARNING: NULL key event!");
448 keystroke->id = (CORBA_long) event->keyval;
449 keystroke->hw_code = (CORBA_short) event->keycode;
450 keystroke->timestamp = (CORBA_unsigned_long) event->timestamp;
451 keystroke->modifiers = (CORBA_unsigned_short) (event->state & 0xFFFF);
454 keystroke->event_string = CORBA_string_dup (event->string);
455 keystroke->is_text = CORBA_TRUE;
459 keystroke->event_string = CORBA_string_dup ("");
460 keystroke->is_text = CORBA_FALSE;
464 case (ATK_KEY_EVENT_PRESS):
465 keystroke->type = Accessibility_KEY_PRESSED;
467 case (ATK_KEY_EVENT_RELEASE):
468 keystroke->type = Accessibility_KEY_RELEASED;
475 g_print ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
476 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
477 (int) keystroke->modifiers,
478 keystroke->event_string, (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
483 spi_atk_bridge_key_listener (AtkKeyEventStruct *event, gpointer data)
485 CORBA_boolean result;
486 Accessibility_DeviceEvent key_event;
487 Accessibility_DeviceEventController controller =
488 Accessibility_Registry_getDeviceEventController (registry, &ev);
492 g_warning ("failure: no deviceeventcontroller found\n");
493 CORBA_exception_free (&ev);
499 spi_init_keystroke_from_atk_key_event (&key_event, event);
501 result = Accessibility_DeviceEventController_notifyListenersSync (
502 controller, &key_event, &ev);
504 CORBA_exception_free (&ev);
511 spi_atk_bridge_signal_listener (GSignalInvocationHint *signal_hint,
512 guint n_param_values,
513 const GValue *param_values,
517 GSignalQuery signal_query;
519 gint detail1 = 0, detail2 = 0;
520 #ifdef SPI_BRIDGE_DEBUG
524 g_signal_query (signal_hint->signal_id, &signal_query);
526 name = signal_query.signal_name;
528 #ifdef SPI_BRIDGE_DEBUG
529 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
530 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
531 fprintf (stderr, "Received signal %s:%s from object %s (gail %s)\n",
532 g_type_name (signal_query.itype), name, s, s2);
535 gobject = g_value_get_object (param_values + 0);
536 if (G_VALUE_TYPE (param_values + 1) == G_TYPE_INT)
537 detail1 = g_value_get_int (param_values + 1);
538 if (G_VALUE_TYPE (param_values + 2) == G_TYPE_INT)
539 detail2 = g_value_get_int (param_values + 2);
541 spi_atk_emit_eventv (gobject, detail1, detail2, "object:%s", name);