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 <libspi/Accessibility.h>
30 #include "accessible.h"
31 #include "application.h"
33 #define SPI_BRIDGE_DEBUG 1
35 #define APP_STATIC_BUFF_SZ 64
37 typedef struct _ArgStruct ArgStruct;
44 static CORBA_Environment ev;
45 static Accessibility_Registry registry;
46 static SpiApplication *this_app;
48 static gboolean bridge_register_app (gpointer p);
49 static void bridge_focus_tracker (AtkObject *object);
50 static void bridge_exit_func(void);
51 static gboolean bridge_register_event_listener ();
52 static void register_atk_event_listeners();
53 static gboolean bridge_property_event_listener (GSignalInvocationHint *signal_hint,
55 const GValue *param_values,
57 static gboolean bridge_signal_listener (GSignalInvocationHint *signal_hint,
59 const GValue *param_values,
62 static gint bridge_key_listener (AtkImplementor *atk_impl,
63 AtkKeyEventStruct *event,
67 gtk_module_init(gint *argc, gchar **argv[])
69 ArgStruct *args = (ArgStruct *) g_new0(ArgStruct, 1);
72 g_idle_add (bridge_register_app, args);
73 g_atexit (bridge_exit_func);
77 bridge_register_app (gpointer gp)
82 ArgStruct *args = (ArgStruct *)gp;
84 CORBA_exception_init(&ev);
86 if (!bonobo_init (&(args->c), args->v))
88 g_error ("Could not initialize Bonobo");
91 /* Create the accesssible application server object */
92 this_app = spi_application_new(atk_get_root ());
94 obj_id = "OAFIID:Accessibility_Registry:proto0.1";
96 oclient = bonobo_activation_activate_from_id (obj_id, 0, NULL, &ev);
97 if (ev._major != CORBA_NO_EXCEPTION) {
99 ("Accessibility app error: exception during registry activation from id: %s\n"),
100 CORBA_exception_id(&ev));
101 CORBA_exception_free(&ev);
105 if (CORBA_Object_is_nil (oclient, &ev))
107 g_error ("Could not locate registry");
110 registry = (Accessibility_Registry) oclient;
112 fprintf(stderr, "About to register application\n");
116 Accessibility_Registry_registerApplication (registry,
117 CORBA_Object_duplicate (BONOBO_OBJREF (this_app), &ev),
120 register_atk_event_listeners ();
126 register_atk_event_listeners ()
128 /* Register for focus event notifications, and register app with central registry */
130 /* kludge to make sure the Atk interface types are registered, otherwise
131 the AtkText signal handlers below won't get registered */
135 atk_add_focus_tracker (bridge_focus_tracker);
136 atk_add_global_event_listener (bridge_property_event_listener, "Gtk:AtkObject:property-change");
137 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkObject:children-changed");
138 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-changed");
139 atk_add_global_event_listener (bridge_signal_listener, "Gtk:AtkText:text-caret-moved");
140 atk_add_key_event_listener (bridge_key_listener, NULL);
143 static void bridge_exit_func()
145 fprintf (stderr, "exiting bridge\n");
146 Accessibility_Registry_deregisterApplication (registry,
147 CORBA_Object_duplicate (BONOBO_OBJREF (this_app), &ev),
149 fprintf (stderr, "bridge exit func complete.\n");
152 static void bridge_focus_tracker (AtkObject *object)
154 Accessibility_Event *e = Accessibility_Event__alloc();
155 e->type = CORBA_string_dup ("focus:");
156 e->source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (object)), &ev);
159 Accessibility_Registry_notifyEvent (registry, e, &ev);
163 bridge_property_event_listener (GSignalInvocationHint *signal_hint,
164 guint n_param_values,
165 const GValue *param_values,
168 Accessibility_Event *e = Accessibility_Event__alloc();
169 Bonobo_Unknown source = NULL;
171 AtkPropertyValues *values;
173 GSignalQuery signal_query;
175 char sbuf[APP_STATIC_BUFF_SZ];
177 g_signal_query (signal_hint->signal_id, &signal_query);
178 name = signal_query.signal_name;
179 #ifdef SPI_BRIDGE_DEBUG
180 fprintf (stderr, "Received (property) signal %s:%s\n",
181 g_type_name (signal_query.itype), name);
183 gobject = g_value_get_object (param_values + 0);
184 values = (AtkPropertyValues*) g_value_get_pointer (param_values + 1);
186 /* notify the actual listeners */
187 if (ATK_IS_IMPLEMENTOR (gobject))
189 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
190 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
191 g_object_unref (G_OBJECT(aobject));
193 else if (ATK_IS_OBJECT (gobject))
195 aobject = ATK_OBJECT (gobject);
196 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
200 g_error("received property-change event from non-AtkImplementor");
203 snprintf(sbuf, APP_STATIC_BUFF_SZ, "object:property-change:%s", values->property_name);
204 e->type = CORBA_string_dup (sbuf);
209 Accessibility_Registry_notifyEvent (registry, e, &ev);
214 bridge_key_listener (AtkImplementor *atk_impl, AtkKeyEventStruct *event, gpointer data)
216 g_print ("bridge key listener!\n");
220 bridge_signal_listener (GSignalInvocationHint *signal_hint,
221 guint n_param_values,
222 const GValue *param_values,
225 Accessibility_Event *e = g_new0(Accessibility_Event, 1);
227 Bonobo_Unknown source;
228 AtkPropertyValues *values;
230 GSignalQuery signal_query;
232 char sbuf[APP_STATIC_BUFF_SZ];
234 g_signal_query (signal_hint->signal_id, &signal_query);
235 name = signal_query.signal_name;
236 #ifdef SPI_BRIDGE_DEBUG
237 fprintf (stderr, "Received (property) signal %s:%s\n",
238 g_type_name (signal_query.itype), name);
240 gobject = g_value_get_object (param_values + 0);
242 /* notify the actual listeners */
243 if (ATK_IS_IMPLEMENTOR (gobject))
245 aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject));
247 else if (ATK_IS_OBJECT (gobject))
249 aobject = ATK_OBJECT (gobject);
250 g_object_ref (aobject);
254 g_error("received property-change event from non-AtkImplementor");
257 snprintf(sbuf, APP_STATIC_BUFF_SZ, "%s:%s", name, g_type_name (signal_query.itype));
258 source = CORBA_Object_duplicate (BONOBO_OBJREF (spi_accessible_new (aobject)), &ev);
259 e->type = CORBA_string_dup (sbuf);
263 Accessibility_Registry_notifyEvent (registry, e, &ev);
264 g_object_unref (aobject);
268 static Accessibility_Registry bridge_get_registry ()