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.
25 #include <libbonobo.h>
26 #include <orbit/orbit.h>
28 #include <atk/atkobject.h>
29 #include <atk/atknoopobject.h>
30 #include <libspi/Accessibility.h>
31 #include "accessible.h"
32 #include "application.h"
34 #define SPI_BRIDGE_DEBUG 1
36 #define APP_STATIC_BUFF_SZ 64
38 typedef struct _ArgStruct ArgStruct;
45 static CORBA_Environment ev;
46 static Accessibility_Registry registry;
47 static SpiApplication *this_app;
49 static gboolean bridge_register_app (gpointer p);
50 static void bridge_focus_tracker (AtkObject *object);
51 static void bridge_exit_func(void);
52 static gboolean bridge_register_event_listener ();
53 static void register_atk_event_listeners();
54 static gboolean bridge_property_event_listener (GSignalInvocationHint *signal_hint,
56 const GValue *param_values,
58 static gboolean bridge_state_event_listener (GSignalInvocationHint *signal_hint,
60 const GValue *param_values,
62 static gboolean bridge_signal_listener (GSignalInvocationHint *signal_hint,
64 const GValue *param_values,
67 static gint bridge_key_listener (AtkKeyEventStruct *event,
71 gtk_module_init(gint *argc, gchar **argv[])
73 ArgStruct *args = (ArgStruct *) g_new0(ArgStruct, 1);
76 g_idle_add (bridge_register_app, args);
77 g_atexit (bridge_exit_func);
81 bridge_register_app (gpointer gp)
86 ArgStruct *args = (ArgStruct *)gp;
88 CORBA_exception_init(&ev);
90 if (!bonobo_init (&(args->c), args->v))
92 g_error ("Could not initialize Bonobo");
95 /* Create the accesssible application server object */
96 this_app = spi_application_new(atk_get_root ());
98 obj_id = "OAFIID:Accessibility_Registry:proto0.1";
100 oclient = bonobo_activation_activate_from_id (obj_id, 0, NULL, &ev);
101 if (ev._major != CORBA_NO_EXCEPTION) {
103 ("Accessibility app error: exception during registry activation from id: %s\n"),
104 CORBA_exception_id(&ev));
105 CORBA_exception_free(&ev);
109 if (CORBA_Object_is_nil (oclient, &ev))
111 g_error ("Could not locate registry");
114 registry = (Accessibility_Registry) oclient;
116 fprintf(stderr, "About to register application\n");
120 Accessibility_Registry_registerApplication (registry,
121 CORBA_Object_duplicate (BONOBO_OBJREF (this_app), &ev),
124 register_atk_event_listeners ();
130 register_atk_event_listeners ()
135 * kludge to make sure the Atk interface types are registered, otherwise
136 * the AtkText signal handlers below won't get registered
139 AtkObject *o = atk_no_op_object_new (g_object_new (ATK_TYPE_OBJECT, NULL));
141 /* Register for focus event notifications, and register app with central registry */
143 atk_add_focus_tracker (bridge_focus_tracker);
144 atk_add_global_event_listener (bridge_property_event_listener, "Gtk:AtkObject:property-change");
145 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkObject:children-changed");
146 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkObject:visible-data-changed");
147 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkSelection:selection-changed");
148 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-selection-changed");
149 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-changed");
150 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-caret-moved");
151 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:row-inserted");
152 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:row-reordered");
153 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:row-deleted");
154 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:column-inserted");
155 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:column-reordered");
156 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:column-deleted");
157 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkTable:model-changed");
158 atk_add_key_event_listener (bridge_key_listener, NULL);
161 static void bridge_exit_func()
163 fprintf (stderr, "exiting bridge\n");
164 Accessibility_Registry_deregisterApplication (registry,
165 CORBA_Object_duplicate (BONOBO_OBJREF (this_app), &ev),
167 fprintf (stderr, "bridge exit func complete.\n");
170 static void bridge_focus_tracker (AtkObject *object)
172 Accessibility_Event *e = Accessibility_Event__alloc();
173 e->type = CORBA_string_dup ("focus:");
174 e->source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (object)), &ev);
177 Accessibility_Registry_notifyEvent (registry, e, &ev);
181 bridge_property_event_listener (GSignalInvocationHint *signal_hint,
182 guint n_param_values,
183 const GValue *param_values,
186 Accessibility_Event *e = Accessibility_Event__alloc();
187 Bonobo_Unknown source = NULL;
189 AtkPropertyValues *values;
191 GSignalQuery signal_query;
193 char sbuf[APP_STATIC_BUFF_SZ];
195 g_signal_query (signal_hint->signal_id, &signal_query);
196 name = signal_query.signal_name;
197 #ifdef SPI_BRIDGE_DEBUG
198 fprintf (stderr, "Received (property) signal %s:%s\n",
199 g_type_name (signal_query.itype), name);
201 gobject = g_value_get_object (param_values + 0);
202 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
204 /* notify the actual listeners */
205 if (ATK_IS_IMPLEMENTOR (gobject))
207 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
208 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
209 g_object_unref (G_OBJECT(aobject));
211 else if (ATK_IS_OBJECT (gobject))
213 aobject = ATK_OBJECT (gobject);
214 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
218 g_error("received property-change event from non-AtkImplementor");
221 snprintf(sbuf, APP_STATIC_BUFF_SZ, "object:property-change:%s", values->property_name);
222 e->type = CORBA_string_dup (sbuf);
227 Accessibility_Registry_notifyEvent (registry, e, &ev);
232 bridge_state_event_listener (GSignalInvocationHint *signal_hint,
233 guint n_param_values,
234 const GValue *param_values,
237 Accessibility_Event *e = Accessibility_Event__alloc();
238 Bonobo_Unknown source = NULL;
240 AtkPropertyValues *values;
242 GSignalQuery signal_query;
244 char sbuf[APP_STATIC_BUFF_SZ];
246 g_signal_query (signal_hint->signal_id, &signal_query);
247 name = signal_query.signal_name;
248 #ifdef SPI_BRIDGE_DEBUG
249 fprintf (stderr, "Received (state) signal %s:%s\n",
250 g_type_name (signal_query.itype), name);
252 gobject = g_value_get_object (param_values + 0);
253 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
255 /* notify the actual listeners */
256 if (ATK_IS_IMPLEMENTOR (gobject))
258 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
259 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
260 g_object_unref (G_OBJECT(aobject));
262 else if (ATK_IS_OBJECT (gobject))
264 aobject = ATK_OBJECT (gobject);
265 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
269 g_error("received property-change event from non-AtkImplementor");
272 snprintf(sbuf, APP_STATIC_BUFF_SZ, "object:%s:%s", values->property_name, "?");
273 e->type = CORBA_string_dup (sbuf);
275 e->detail1 = (unsigned long) values->old_value.data[0].v_ulong;
276 e->detail2 = (unsigned long) values->new_value.data[0].v_ulong;
278 Accessibility_Registry_notifyEvent (registry, e, &ev);
284 static Accessibility_KeyStroke *
285 accessibility_keystroke_from_atk_key_event (AtkKeyEventStruct *event)
287 Accessibility_KeyStroke *keystroke;
288 keystroke = Accessibility_KeyStroke__alloc ();
291 if (event) g_print ("event %c (%d)\n", (int) event->keyval, (int) event->keycode);
294 if (!event) g_print ("WARNING: NULL key event!");
296 keystroke->keyID = (CORBA_long) event->keyval;
297 keystroke->keycode = (CORBA_short) event->keycode;
298 keystroke->timestamp = (CORBA_unsigned_long) event->timestamp;
299 keystroke->modifiers = (CORBA_unsigned_short) (event->state & 0xFFFF);
303 case (ATK_KEY_EVENT_PRESS):
304 keystroke->type = Accessibility_KEY_PRESSED;
306 case (ATK_KEY_EVENT_RELEASE):
307 keystroke->type = Accessibility_KEY_RELEASED;
316 bridge_key_listener (AtkKeyEventStruct *event, gpointer data)
318 Accessibility_KeyStroke *key_event = accessibility_keystroke_from_atk_key_event (event);
319 CORBA_boolean result;
320 Accessibility_DeviceEventController controller =
321 Accessibility_Registry_getDeviceEventController (registry, &ev);
322 result = Accessibility_DeviceEventController_notifyListenersSync (controller,
323 (Accessibility_DeviceEvent *) key_event,
328 bridge_signal_listener (GSignalInvocationHint *signal_hint,
329 guint n_param_values,
330 const GValue *param_values,
333 Accessibility_Event *e = g_new0(Accessibility_Event, 1);
335 Bonobo_Unknown source;
336 AtkPropertyValues *values;
338 GSignalQuery signal_query;
340 char sbuf[APP_STATIC_BUFF_SZ];
342 g_signal_query (signal_hint->signal_id, &signal_query);
343 name = signal_query.signal_name;
344 #ifdef SPI_BRIDGE_DEBUG
345 fprintf (stderr, "Received signal %s:%s\n",
346 g_type_name (signal_query.itype), name);
348 gobject = g_value_get_object (param_values + 0);
350 /* notify the actual listeners */
351 if (ATK_IS_IMPLEMENTOR (gobject))
353 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
355 else if (ATK_IS_OBJECT (gobject))
357 aobject = ATK_OBJECT (gobject);
358 g_object_ref (aobject);
362 g_error("received property-change event from non-AtkImplementor");
365 snprintf(sbuf, APP_STATIC_BUFF_SZ, "%s:%s", name, g_type_name (signal_query.itype));
366 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
367 e->type = CORBA_string_dup (sbuf);
371 Accessibility_Registry_notifyEvent (registry, e, &ev);
372 g_object_unref (aobject);
376 static Accessibility_Registry bridge_get_registry ()