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 spi_atk_bridge_idle_init (gpointer user_data);
42 static void spi_atk_bridge_focus_tracker (AtkObject *object);
43 static void spi_atk_bridge_exit_func (void);
44 static void spi_atk_register_event_listeners (void);
45 static gboolean spi_atk_bridge_property_event_listener (GSignalInvocationHint *signal_hint,
47 const GValue *param_values,
49 static gboolean spi_atk_bridge_state_event_listener (GSignalInvocationHint *signal_hint,
51 const GValue *param_values,
53 static gboolean spi_atk_bridge_signal_listener (GSignalInvocationHint *signal_hint,
55 const GValue *param_values,
57 static gint spi_atk_bridge_key_listener (AtkKeyEventStruct *event,
61 gtk_module_init (gint *argc, gchar **argv[])
65 if (!bonobo_init (argc, *argv))
67 g_error ("Could not initialize Bonobo");
70 CORBA_exception_init(&ev);
72 registry = bonobo_activation_activate_from_id (
73 "OAFIID:Accessibility_Registry:proto0.1", 0, NULL, &ev);
75 if (ev._major != CORBA_NO_EXCEPTION)
77 g_error ("Accessibility app error: exception during "
78 "registry activation from id: %s\n",
79 CORBA_exception_id (&ev));
80 CORBA_exception_free (&ev);
83 if (CORBA_Object_is_nil (registry, &ev))
85 g_error ("Could not locate registry");
90 /* Create the accessible application server object */
92 this_app = spi_application_new (atk_get_root ());
94 fprintf (stderr, "About to register application\n");
96 Accessibility_Registry_registerApplication (registry,
97 BONOBO_OBJREF (this_app),
100 g_atexit (spi_atk_bridge_exit_func);
102 g_idle_add (spi_atk_bridge_idle_init, NULL);
108 spi_atk_bridge_idle_init (gpointer user_data)
110 spi_atk_register_event_listeners ();
112 fprintf (stderr, "Application registered & listening\n");
118 spi_atk_register_event_listeners (void)
121 * kludge to make sure the Atk interface types are registered, otherwise
122 * the AtkText signal handlers below won't get registered
124 GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
125 AtkObject *bo = atk_no_op_object_new (ao);
127 /* Register for focus event notifications, and register app with central registry */
129 atk_add_focus_tracker (spi_atk_bridge_focus_tracker);
130 atk_add_global_event_listener (spi_atk_bridge_property_event_listener, "Gtk:AtkObject:property-change");
131 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkObject:children-changed");
132 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkObject:visible-data-changed");
133 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkSelection:selection-changed");
134 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkText:text-selection-changed");
135 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkText:text-changed");
136 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkText:text-caret-moved");
137 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkTable:row-inserted");
138 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkTable:row-reordered");
139 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkTable:row-deleted");
140 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkTable:column-inserted");
141 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkTable:column-reordered");
142 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkTable:column-deleted");
143 atk_add_global_event_listener (spi_atk_bridge_signal_listener, "Gtk:AtkTable:model-changed");
145 * May add the following listeners to implement preemptive key listening for GTK+
147 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
148 * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
150 atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
152 g_object_unref (G_OBJECT (bo));
157 spi_atk_bridge_exit_func (void)
159 BonoboObject *app = (BonoboObject *) this_app;
161 fprintf (stderr, "exiting bridge\n");
170 * FIXME: this may be incorrect for apps that do their own bonobo
171 * shutdown, until we can explicitly shutdown to get the ordering
174 if (!bonobo_is_initialized ())
176 fprintf (stderr, "Re-initializing bonobo\n");
177 g_assert (bonobo_init (0, NULL));
178 g_assert (bonobo_activate ());
181 Accessibility_Registry_deregisterApplication (
182 registry, BONOBO_OBJREF (app), &ev);
184 bonobo_object_release_unref (registry, &ev);
186 bonobo_object_unref (app);
188 fprintf (stderr, "bridge exit func complete.\n");
190 if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
192 g_assert (!bonobo_debug_shutdown ());
197 spi_atk_bridge_focus_tracker (AtkObject *object)
199 SpiAccessible *source;
200 Accessibility_Event e;
202 source = spi_accessible_new (object);
205 e.source = BONOBO_OBJREF (source);
209 Accessibility_Registry_notifyEvent (registry, &e, &ev);
211 CORBA_exception_free (&ev);
215 spi_atk_emit_eventv (GObject *gobject,
216 unsigned long detail1,
217 unsigned long detail2,
218 const char *format, ...)
221 Accessibility_Event e;
222 SpiAccessible *source;
224 #ifdef SPI_BRIDGE_DEBUG
228 va_start (args, format);
230 if (ATK_IS_IMPLEMENTOR (gobject))
232 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
233 source = spi_accessible_new (aobject);
234 g_object_unref (G_OBJECT (aobject));
236 else if (ATK_IS_OBJECT (gobject))
238 aobject = ATK_OBJECT (gobject);
239 source = spi_accessible_new (aobject);
245 g_error ("received property-change event from non-AtkImplementor");
250 e.type = g_strdup_vprintf (format, args);
251 e.source = BONOBO_OBJREF (source);
255 #ifdef SPI_BRIDGE_DEBUG
256 s = Accessibility_Accessible__get_name (BONOBO_OBJREF (source), &ev);
257 g_warning ("Emitting event '%s' (%lu, %lu) on %s",
258 e.type, e.detail1, e.detail2, s);
262 Accessibility_Registry_notifyEvent (registry, &e, &ev);
264 CORBA_exception_free (&ev);
273 spi_atk_bridge_property_event_listener (GSignalInvocationHint *signal_hint,
274 guint n_param_values,
275 const GValue *param_values,
278 AtkPropertyValues *values;
281 #ifdef SPI_BRIDGE_DEBUG
282 GSignalQuery signal_query;
286 g_signal_query (signal_hint->signal_id, &signal_query);
287 name = signal_query.signal_name;
289 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
290 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
291 fprintf (stderr, "Received (property) signal %s:%s from object %s (gail %s)\n",
292 g_type_name (signal_query.itype), name, s, s2);
295 gobject = g_value_get_object (param_values + 0);
296 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
298 spi_atk_emit_eventv (gobject, 0, 0, "object:property-change:%s", values->property_name);
304 spi_atk_bridge_state_event_listener (GSignalInvocationHint *signal_hint,
305 guint n_param_values,
306 const GValue *param_values,
310 AtkPropertyValues *values;
311 #ifdef SPI_BRIDGE_DEBUG
312 GSignalQuery signal_query;
315 g_signal_query (signal_hint->signal_id, &signal_query);
316 name = signal_query.signal_name;
317 fprintf (stderr, "Received (state) signal %s:%s\n",
318 g_type_name (signal_query.itype), name);
321 gobject = g_value_get_object (param_values + 0);
322 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
324 spi_atk_emit_eventv (gobject,
325 (unsigned long) values->old_value.data[0].v_ulong,
326 (unsigned long) values->new_value.data[0].v_ulong,
327 "object:%s:?", values->property_name);
333 spi_init_keystroke_from_atk_key_event (Accessibility_DeviceEvent *keystroke,
334 AtkKeyEventStruct *event)
339 g_print ("event %c (%d)\n", (int) event->keyval, (int) event->keycode);
345 g_print ("WARNING: NULL key event!");
348 keystroke->id = (CORBA_long) event->keyval;
349 keystroke->hw_code = (CORBA_short) event->keycode;
350 keystroke->timestamp = (CORBA_unsigned_long) event->timestamp;
351 keystroke->modifiers = (CORBA_unsigned_short) (event->state & 0xFFFF);
354 keystroke->event_string = CORBA_string_dup (event->string);
355 keystroke->is_text = CORBA_TRUE;
359 keystroke->event_string = CORBA_string_dup ("");
360 keystroke->is_text = CORBA_FALSE;
364 case (ATK_KEY_EVENT_PRESS):
365 keystroke->type = Accessibility_KEY_PRESSED;
367 case (ATK_KEY_EVENT_RELEASE):
368 keystroke->type = Accessibility_KEY_RELEASED;
375 g_print ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
376 (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
377 (int) keystroke->modifiers,
378 keystroke->event_string, (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
383 spi_atk_bridge_key_listener (AtkKeyEventStruct *event, gpointer data)
385 CORBA_boolean result;
386 Accessibility_DeviceEvent key_event;
387 Accessibility_DeviceEventController controller =
388 Accessibility_Registry_getDeviceEventController (registry, &ev);
392 g_warning ("failure: no deviceeventcontroller found\n");
393 CORBA_exception_free (&ev);
399 spi_init_keystroke_from_atk_key_event (&key_event, event);
401 result = Accessibility_DeviceEventController_notifyListenersSync (
402 controller, &key_event, &ev);
404 CORBA_exception_free (&ev);
411 spi_atk_bridge_signal_listener (GSignalInvocationHint *signal_hint,
412 guint n_param_values,
413 const GValue *param_values,
417 GSignalQuery signal_query;
419 gint detail1 = 0, detail2 = 0;
420 #ifdef SPI_BRIDGE_DEBUG
424 g_signal_query (signal_hint->signal_id, &signal_query);
426 name = signal_query.signal_name;
428 #ifdef SPI_BRIDGE_DEBUG
429 s2 = g_type_name (G_OBJECT_TYPE (g_value_get_object (param_values + 0)));
430 s = atk_object_get_name (ATK_OBJECT (g_value_get_object (param_values + 0)));
431 fprintf (stderr, "Received signal %s:%s from object %s (gail %s)\n",
432 g_type_name (signal_query.itype), name, s, s2);
435 gobject = g_value_get_object (param_values + 0);
436 if (G_VALUE_TYPE (param_values + 1) == G_TYPE_INT)
437 detail1 = g_value_get_int (param_values + 1);
438 if (G_VALUE_TYPE (param_values + 2) == G_TYPE_INT)
439 detail2 = g_value_get_int (param_values + 2);
441 spi_atk_emit_eventv (gobject, detail1, detail2, "object:%s", name);