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 #include <bonobo-activation/bonobo-activation-register.h>
37 #undef SPI_BRIDGE_DEBUG
39 static CORBA_Environment ev;
40 static Accessibility_Registry registry;
41 static SpiApplication *this_app = NULL;
43 static void spi_atk_bridge_exit_func (void);
44 static void spi_atk_register_event_listeners (void);
45 static gboolean spi_atk_bridge_idle_init (gpointer user_data);
46 static void spi_atk_bridge_focus_tracker (AtkObject *object);
47 static gboolean spi_atk_bridge_property_event_listener (GSignalInvocationHint *signal_hint,
49 const GValue *param_values,
52 spi_atk_bridge_window_event_listener (GSignalInvocationHint *signal_hint,
54 const GValue *param_values,
56 static gboolean spi_atk_bridge_signal_listener (GSignalInvocationHint *signal_hint,
58 const GValue *param_values,
60 static gint spi_atk_bridge_key_listener (AtkKeyEventStruct *event,
63 /* For automatic libgnome init */
64 extern void gnome_accessibility_module_init (void);
65 extern void gnome_accessibility_module_shutdown (void);
67 static int atk_bridge_initialized = FALSE;
68 static guint atk_bridge_focus_tracker_id = 0;
69 static guint atk_bridge_key_event_listener_id = 0;
70 static guint idle_init_id = 0;
71 static GArray *listener_ids = NULL;
74 * These exported symbols are hooked by gnome-program
75 * to provide automatic module initialization and shutdown.
77 extern void gnome_accessibility_module_init (void);
78 extern void gnome_accessibility_module_shutdown (void);
81 atk_bridge_init (gint *argc, gchar **argv[])
85 if (atk_bridge_initialized)
89 atk_bridge_initialized = TRUE;
91 if (!bonobo_init (argc, argv ? *argv : NULL))
93 g_error ("Could not initialize Bonobo");
97 * We only want to enable the bridge for top level
98 * applications, we detect bonobo components by seeing
99 * if they were activated with the intention of extracting
100 * an impl. by IID - very solid.
102 if (bonobo_activation_iid_get ())
105 CORBA_exception_init(&ev);
107 registry = bonobo_activation_activate_from_id (
108 "OAFIID:Accessibility_Registry:proto0.1", 0, NULL, &ev);
110 if (ev._major != CORBA_NO_EXCEPTION)
112 g_error ("Accessibility app error: exception during "
113 "registry activation from id: %s\n",
114 CORBA_exception_id (&ev));
115 CORBA_exception_free (&ev);
118 if (registry == CORBA_OBJECT_NIL)
120 g_error ("Could not locate registry");
125 /* Create the accessible application server object */
127 this_app = spi_application_new (atk_get_root ());
129 fprintf (stderr, "About to register application\n");
131 Accessibility_Registry_registerApplication (registry,
132 BONOBO_OBJREF (this_app),
135 g_atexit (spi_atk_bridge_exit_func);
137 idle_init_id = g_idle_add (spi_atk_bridge_idle_init, NULL);
143 gtk_module_init (gint *argc, gchar **argv[])
145 return atk_bridge_init (argc, argv);
149 spi_atk_bridge_idle_init (gpointer user_data)
153 spi_atk_register_event_listeners ();
155 fprintf (stderr, "Application registered & listening\n");
161 add_signal_listener (const char *signal_name)
165 id = atk_add_global_event_listener (
166 spi_atk_bridge_signal_listener, signal_name);
168 g_array_append_val (listener_ids, id);
172 spi_atk_register_event_listeners (void)
175 * kludge to make sure the Atk interface types are registered, otherwise
176 * the AtkText signal handlers below won't get registered
179 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
180 AtkObject *bo = atk_no_op_object_new (ao);
182 /* Register for focus event notifications, and register app with central registry */
184 listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
186 atk_bridge_focus_tracker_id = atk_add_focus_tracker (spi_atk_bridge_focus_tracker);
188 id = atk_add_global_event_listener (spi_atk_bridge_property_event_listener,
189 "Gtk:AtkObject:property-change");
190 g_array_append_val (listener_ids, id);
191 id = atk_add_global_event_listener (spi_atk_bridge_window_event_listener,
193 g_array_append_val (listener_ids, id);
194 id = atk_add_global_event_listener (spi_atk_bridge_window_event_listener,
196 g_array_append_val (listener_ids, id);
197 id = atk_add_global_event_listener (spi_atk_bridge_window_event_listener,
199 g_array_append_val (listener_ids, id);
200 id = atk_add_global_event_listener (spi_atk_bridge_window_event_listener,
202 g_array_append_val (listener_ids, id);
203 id = atk_add_global_event_listener (spi_atk_bridge_window_event_listener,
205 g_array_append_val (listener_ids, id);
206 id = atk_add_global_event_listener (spi_atk_bridge_window_event_listener,
208 g_array_append_val (listener_ids, id);
209 id = atk_add_global_event_listener (spi_atk_bridge_window_event_listener,
210 "window:deactivate");
211 g_array_append_val (listener_ids, id);
213 add_signal_listener ("Gtk:AtkObject:state-change");
214 add_signal_listener ("Gtk:AtkObject:children-changed");
215 add_signal_listener ("Gtk:AtkObject:visible-data-changed");
216 add_signal_listener ("Gtk:AtkSelection:selection-changed");
217 add_signal_listener ("Gtk:AtkText:text-selection-changed");
218 add_signal_listener ("Gtk:AtkText:text-changed");
219 add_signal_listener ("Gtk:AtkText:text-caret-moved");
220 add_signal_listener ("Gtk:AtkTable:row-inserted");
221 add_signal_listener ("Gtk:AtkTable:row-reordered");
222 add_signal_listener ("Gtk:AtkTable:row-deleted");
223 add_signal_listener ("Gtk:AtkTable:column-inserted");
224 add_signal_listener ("Gtk:AtkTable:column-reordered");
225 add_signal_listener ("Gtk:AtkTable:column-deleted");
226 add_signal_listener ("Gtk:AtkTable:model-changed");
228 * May add the following listeners to implement preemptive key listening for GTK+
230 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
231 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
233 atk_bridge_key_event_listener_id = atk_add_key_event_listener (
234 spi_atk_bridge_key_listener, NULL);
236 g_object_unref (G_OBJECT (bo));
241 deregister_application (BonoboObject *app)
243 Accessibility_Registry_deregisterApplication (
244 registry, BONOBO_OBJREF (app), &ev);
246 registry = bonobo_object_release_unref (registry, &ev);
248 app = bonobo_object_unref (app);
252 spi_atk_bridge_exit_func (void)
254 BonoboObject *app = (BonoboObject *) this_app;
256 fprintf (stderr, "exiting bridge\n");
265 * FIXME: this may be incorrect for apps that do their own bonobo
266 * shutdown, until we can explicitly shutdown to get the ordering
269 if (!bonobo_is_initialized ())
271 fprintf (stderr, "Re-initializing bonobo\n");
272 g_assert (bonobo_init (0, NULL));
273 g_assert (bonobo_activate ());
276 deregister_application (app);
278 fprintf (stderr, "bridge exit func complete.\n");
280 if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
282 g_assert (!bonobo_debug_shutdown ());
287 gnome_accessibility_module_init (void)
289 atk_bridge_init (NULL, NULL);
291 g_print("Atk Accessibilty bridge initialized\n");
295 gnome_accessibility_module_shutdown (void)
297 BonoboObject *app = (BonoboObject *) this_app;
299 if (!atk_bridge_initialized)
303 atk_bridge_initialized = FALSE;
306 g_print("Atk Accessibilty bridge shutdown\n");
310 g_source_remove (idle_init_id);
316 GArray *ids = listener_ids;
319 atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
321 for (i = 0; ids && i < ids->len; i++)
323 atk_remove_global_event_listener (g_array_index (ids, guint, i));
326 atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
329 deregister_application (app);
333 spi_atk_bridge_focus_tracker (AtkObject *object)
335 SpiAccessible *source;
336 Accessibility_Event e;
338 source = spi_accessible_new (object);
341 e.source = BONOBO_OBJREF (source);
345 Accessibility_Registry_notifyEvent (registry, &e, &ev);
347 CORBA_exception_free (&ev);
351 spi_atk_emit_eventv (GObject *gobject,
352 unsigned long detail1,
353 unsigned long detail2,
354 const char *format, ...)
357 Accessibility_Event e;
358 SpiAccessible *source;
360 #ifdef SPI_BRIDGE_DEBUG
364 va_start (args, format);
366 if (ATK_IS_IMPLEMENTOR (gobject))
368 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
369 source = spi_accessible_new (aobject);
370 g_object_unref (G_OBJECT (aobject));
372 else if (ATK_IS_OBJECT (gobject))
374 aobject = ATK_OBJECT (gobject);
375 source = spi_accessible_new (aobject);
381 g_error ("received property-change event from non-AtkImplementor");
386 e.type = g_strdup_vprintf (format, args);
387 e.source = BONOBO_OBJREF (source);
391 #ifdef SPI_BRIDGE_DEBUG
392 s = Accessibility_Accessible__get_name (BONOBO_OBJREF (source), &ev);
393 g_warning ("Emitting event '%s' (%lu, %lu) on %s",
394 e.type, e.detail1, e.detail2, s);
398 Accessibility_Registry_notifyEvent (registry, &e, &ev);
400 CORBA_exception_free (&ev);
409 spi_atk_bridge_property_event_listener (GSignalInvocationHint *signal_hint,
410 guint n_param_values,
411 const GValue *param_values,
414 AtkPropertyValues *values;
417 #ifdef SPI_BRIDGE_DEBUG
418 GSignalQuery signal_query;
422 g_signal_query (signal_hint->signal_id, &signal_query);
423 name = signal_query.signal_name;
425 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
426 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
427 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
428 fprintf (stderr, "Received (property) signal %s:%s:%s from object %s (gail %s)\n",
429 g_type_name (signal_query.itype), name, values->property_name, s, s2);
433 gobject = g_value_get_object (param_values + 0);
434 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
436 spi_atk_emit_eventv (gobject, 0, 0, "object:property-change:%s", values->property_name);
441 #if THIS_WILL_EVER_BE_USED
443 spi_atk_bridge_state_event_listener (GSignalInvocationHint *signal_hint,
444 guint n_param_values,
445 const GValue *param_values,
449 AtkPropertyValues *values;
450 #ifdef SPI_BRIDGE_DEBUG
451 GSignalQuery signal_query;
454 g_signal_query (signal_hint->signal_id, &signal_query);
455 name = signal_query.signal_name;
456 fprintf (stderr, "Received (state) signal %s:%s\n",
457 g_type_name (signal_query.itype), name);
460 gobject = g_value_get_object (param_values + 0);
461 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
463 spi_atk_emit_eventv (gobject,
464 (unsigned long) values->old_value.data[0].v_ulong,
465 (unsigned long) values->new_value.data[0].v_ulong,
466 "object:%s:?", values->property_name);
473 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent *keystroke,
474 AtkKeyEventStruct *event)
479 g_print ("event %c (%d)\n", (int) event->keyval, (int) event->keycode);
485 g_print ("WARNING: NULL key event!");
488 keystroke->id = (CORBA_long) event->keyval;
489 keystroke->hw_code = (CORBA_short) event->keycode;
490 keystroke->timestamp = (CORBA_unsigned_long) event->timestamp;
491 keystroke->modifiers = (CORBA_unsigned_short) (event->state & 0xFFFF);
494 keystroke->event_string = CORBA_string_dup (event->string);
495 keystroke->is_text = CORBA_TRUE;
499 keystroke->event_string = CORBA_string_dup ("");
500 keystroke->is_text = CORBA_FALSE;
504 case (ATK_KEY_EVENT_PRESS):
505 keystroke->type = Accessibility_KEY_PRESSED;
507 case (ATK_KEY_EVENT_RELEASE):
508 keystroke->type = Accessibility_KEY_RELEASED;
515 g_print ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
516 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
517 (int) keystroke->modifiers,
518 keystroke->event_string, (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
523 spi_atk_bridge_key_listener (AtkKeyEventStruct *event, gpointer data)
525 CORBA_boolean result;
526 Accessibility_DeviceEvent key_event;
527 Accessibility_DeviceEventController controller =
528 Accessibility_Registry_getDeviceEventController (registry, &ev);
532 g_warning ("failure: no deviceeventcontroller found\n");
533 CORBA_exception_free (&ev);
539 spi_init_keystroke_from_atk_key_event (&key_event, event);
541 result = Accessibility_DeviceEventController_notifyListenersSync (
542 controller, &key_event, &ev);
544 CORBA_exception_free (&ev);
551 spi_atk_bridge_signal_listener (GSignalInvocationHint *signal_hint,
552 guint n_param_values,
553 const GValue *param_values,
557 GSignalQuery signal_query;
559 gint detail1 = 0, detail2 = 0;
560 #ifdef SPI_BRIDGE_DEBUG
564 g_signal_query (signal_hint->signal_id, &signal_query);
566 name = signal_query.signal_name;
568 #ifdef SPI_BRIDGE_DEBUG
569 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
570 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
571 fprintf (stderr, "Received signal %s:%s from object %s (gail %s)\n",
572 g_type_name (signal_query.itype), name, s ? s : "<NULL>" , s2);
575 gobject = g_value_get_object (param_values + 0);
576 if (G_VALUE_TYPE (param_values + 1) == G_TYPE_INT)
577 detail1 = g_value_get_int (param_values + 1);
578 if (G_VALUE_TYPE (param_values + 2) == G_TYPE_INT)
579 detail2 = g_value_get_int (param_values + 2);
581 spi_atk_emit_eventv (gobject, detail1, detail2, "object:%s", name);
589 spi_atk_bridge_window_event_listener (GSignalInvocationHint *signal_hint,
590 guint n_param_values,
591 const GValue *param_values,
595 GSignalQuery signal_query;
597 #ifdef SPI_BRIDGE_DEBUG
601 g_signal_query (signal_hint->signal_id, &signal_query);
603 name = signal_query.signal_name;
605 #ifdef SPI_BRIDGE_DEBUG
606 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
607 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
608 fprintf (stderr, "Received signal %s:%s from object %s (gail %s)\n",
609 g_type_name (signal_query.itype), name, s ? s : "<NULL>" , s2);
612 gobject = g_value_get_object (param_values + 0);
613 spi_atk_emit_eventv (gobject, 0, 0, "window:%s", name);