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 gboolean bridge_idle_init (gpointer user_data);
42 static void bridge_focus_tracker (AtkObject *object);
43 static void bridge_exit_func (void);
44 static void register_atk_event_listeners (void);
45 static gboolean bridge_property_event_listener (GSignalInvocationHint *signal_hint,
47 const GValue *param_values,
49 static gboolean bridge_state_event_listener (GSignalInvocationHint *signal_hint,
51 const GValue *param_values,
53 static gboolean bridge_signal_listener (GSignalInvocationHint *signal_hint,
55 const GValue *param_values,
58 static gint bridge_key_listener (AtkKeyEventStruct *event,
62 gtk_module_init (gint *argc, gchar **argv[])
66 if (!bonobo_init (argc, *argv))
68 g_error ("Could not initialize Bonobo");
71 CORBA_exception_init(&ev);
73 registry = bonobo_activation_activate_from_id (
74 "OAFIID:Accessibility_Registry:proto0.1", 0, NULL, &ev);
76 if (ev._major != CORBA_NO_EXCEPTION)
78 g_error ("Accessibility app error: exception during "
79 "registry activation from id: %s\n",
80 CORBA_exception_id (&ev));
81 CORBA_exception_free (&ev);
84 if (CORBA_Object_is_nil (registry, &ev))
86 g_error ("Could not locate registry");
91 /* Create the accessible application server object */
93 this_app = spi_application_new (atk_get_root ());
95 fprintf (stderr, "About to register application\n");
97 Accessibility_Registry_registerApplication (registry,
98 BONOBO_OBJREF (this_app),
101 g_atexit (bridge_exit_func);
103 g_idle_add (bridge_idle_init, NULL);
109 bridge_idle_init (gpointer user_data)
111 register_atk_event_listeners ();
113 fprintf (stderr, "Application registered & listening\n");
119 register_atk_event_listeners (void)
122 * kludge to make sure the Atk interface types are registered, otherwise
123 * the AtkText signal handlers below won't get registered
125 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
126 AtkObject *bo = atk_no_op_object_new (ao);
128 /* Register for focus event notifications, and register app with central registry */
130 atk_add_focus_tracker (bridge_focus_tracker);
131 atk_add_global_event_listener (bridge_property_event_listener, "Gtk:AtkObject:property-change");
132 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkObject:children-changed");
133 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkObject:visible-data-changed");
134 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkSelection:selection-changed");
135 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-selection-changed");
136 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-changed");
137 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-caret-moved");
138 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:row-inserted");
139 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:row-reordered");
140 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:row-deleted");
141 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:column-inserted");
142 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:column-reordered");
143 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:column-deleted");
144 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:model-changed");
146 * May add the following listeners to implement preemptive key listening for GTK+
148 * atk_add_global_event_listener (bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
149 * atk_add_global_event_listener (bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
151 atk_add_key_event_listener (bridge_key_listener, NULL);
153 g_object_unref (G_OBJECT (bo));
158 bridge_exit_func (void)
160 BonoboObject *app = (BonoboObject *) this_app;
162 fprintf (stderr, "exiting bridge\n");
171 * FIXME: this may be incorrect for apps that do their own bonobo
172 * shutdown, until we can explicitly shutdown to get the ordering
175 if (!bonobo_is_initialized ())
177 fprintf (stderr, "Re-initializing bonobo\n");
178 g_assert (bonobo_init (0, NULL));
179 g_assert (bonobo_activate ());
182 Accessibility_Registry_deregisterApplication (
183 registry, BONOBO_OBJREF (app), &ev);
185 bonobo_object_release_unref (registry, &ev);
187 bonobo_object_unref (app);
189 fprintf (stderr, "bridge exit func complete.\n");
191 if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
193 g_assert (!bonobo_debug_shutdown ());
198 bridge_focus_tracker (AtkObject *object)
200 SpiAccessible *source;
201 Accessibility_Event e;
203 source = spi_accessible_new (object);
206 e.source = BONOBO_OBJREF (source);
210 Accessibility_Registry_notifyEvent (registry, &e, &ev);
212 CORBA_exception_free (&ev);
216 emit_eventv (GObject *gobject,
217 unsigned long detail1,
218 unsigned long detail2,
219 const char *format, ...)
222 Accessibility_Event e;
223 SpiAccessible *source;
225 #ifdef SPI_BRIDGE_DEBUG
229 va_start (args, format);
231 if (ATK_IS_IMPLEMENTOR (gobject))
233 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
234 source = spi_accessible_new (aobject);
235 g_object_unref (G_OBJECT (aobject));
237 else if (ATK_IS_OBJECT (gobject))
239 aobject = ATK_OBJECT (gobject);
240 source = spi_accessible_new (aobject);
246 g_error ("received property-change event from non-AtkImplementor");
251 e.type = g_strdup_vprintf (format, args);
252 e.source = BONOBO_OBJREF (source);
256 #ifdef SPI_BRIDGE_DEBUG
257 s = Accessibility_Accessible__get_name (BONOBO_OBJREF (source), &ev);
258 g_warning ("Emitting event '%s' (%lu, %lu) on %s",
259 e.type, e.detail1, e.detail2, s);
263 Accessibility_Registry_notifyEvent (registry, &e, &ev);
265 CORBA_exception_free (&ev);
274 bridge_property_event_listener (GSignalInvocationHint *signal_hint,
275 guint n_param_values,
276 const GValue *param_values,
279 AtkPropertyValues *values;
282 #ifdef SPI_BRIDGE_DEBUG
283 GSignalQuery signal_query;
287 g_signal_query (signal_hint->signal_id, &signal_query);
288 name = signal_query.signal_name;
290 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
291 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
292 fprintf (stderr, "Received (property) signal %s:%s from object %s (gail %s)\n",
293 g_type_name (signal_query.itype), name, s, s2);
296 gobject = g_value_get_object (param_values + 0);
297 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
299 emit_eventv (gobject, 0, 0, "object:property-change:%s", values->property_name);
305 bridge_state_event_listener (GSignalInvocationHint *signal_hint,
306 guint n_param_values,
307 const GValue *param_values,
311 AtkPropertyValues *values;
312 #ifdef SPI_BRIDGE_DEBUG
313 GSignalQuery signal_query;
316 g_signal_query (signal_hint->signal_id, &signal_query);
317 name = signal_query.signal_name;
318 fprintf (stderr, "Received (state) signal %s:%s\n",
319 g_type_name (signal_query.itype), name);
322 gobject = g_value_get_object (param_values + 0);
323 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
325 emit_eventv (gobject,
326 (unsigned long) values->old_value.data[0].v_ulong,
327 (unsigned long) values->new_value.data[0].v_ulong,
328 "object:%s:?", values->property_name);
334 accessibility_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent *keystroke,
335 AtkKeyEventStruct *event)
340 g_print ("event %c (%d)\n", (int) event->keyval, (int) event->keycode);
346 g_print ("WARNING: NULL key event!");
349 keystroke->id = (CORBA_long) event->keyval;
350 keystroke->hw_code = (CORBA_short) event->keycode;
351 keystroke->timestamp = (CORBA_unsigned_long) event->timestamp;
352 keystroke->modifiers = (CORBA_unsigned_short) (event->state & 0xFFFF);
356 case (ATK_KEY_EVENT_PRESS):
357 keystroke->type = Accessibility_KEY_PRESSED;
359 case (ATK_KEY_EVENT_RELEASE):
360 keystroke->type = Accessibility_KEY_RELEASED;
369 bridge_key_listener (AtkKeyEventStruct *event, gpointer data)
371 CORBA_boolean result;
372 Accessibility_DeviceEvent key_event;
373 Accessibility_DeviceEventController controller =
374 Accessibility_Registry_getDeviceEventController (registry, &ev);
378 CORBA_exception_free (&ev);
384 accessibility_init_keystroke_from_atk_key_event (&key_event, event);
386 result = Accessibility_DeviceEventController_notifyListenersSync (
387 controller, &key_event, &ev);
389 CORBA_exception_free (&ev);
396 bridge_signal_listener (GSignalInvocationHint *signal_hint,
397 guint n_param_values,
398 const GValue *param_values,
402 GSignalQuery signal_query;
404 #ifdef SPI_BRIDGE_DEBUG
408 g_signal_query (signal_hint->signal_id, &signal_query);
410 name = signal_query.signal_name;
412 #ifdef SPI_BRIDGE_DEBUG
413 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
414 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
415 fprintf (stderr, "Received signal %s:%s from object %s (gail %s)\n",
416 g_type_name (signal_query.itype), name, s, s2);
419 gobject = g_value_get_object (param_values + 0);
421 emit_eventv (gobject, 0, 0, "object:%s", name);