2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2008, Codethink Ltd.
6 * Copyright 2001, 2002 Sun Microsystems Inc.,
7 * Copyright 2001, 2002 Ximian, Inc.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
27 #include <dbus/dbus-glib-lowlevel.h>
34 REGISTRY_APPLICATION_REMOVE = 0,
35 REGISTRY_APPLICATION_ADD = 1
38 /*---------------------------------------------------------------------------*/
40 G_DEFINE_TYPE(SpiRegistry, spi_registry, G_TYPE_OBJECT)
43 spi_registry_class_init (SpiRegistryClass *klass)
45 GObjectClass * object_class = (GObjectClass *) klass;
47 spi_registry_parent_class = g_type_class_ref (G_TYPE_OBJECT);
51 spi_registry_init (SpiRegistry *registry)
53 registry->apps = g_sequence_new (g_free);
56 /*---------------------------------------------------------------------------*/
58 static void emit_update_applications(SpiRegistry *reg, guint sigtype, const char *app)
60 DBusMessage *msg = NULL;
63 dbus_error_init (&error);
65 if ((msg = dbus_message_new_signal (SPI_DBUS_PATH_REGISTRY,
66 SPI_DBUS_INTERFACE_REGISTRY,
67 "UpdateApplications"))) {
68 dbus_message_append_args(msg, DBUS_TYPE_INT32, &sigtype,
69 DBUS_TYPE_STRING, &app, DBUS_TYPE_INVALID);
71 dbus_connection_send (reg->bus, msg, NULL);
73 dbus_message_unref (msg);
76 dbus_error_free (&error);
80 /*---------------------------------------------------------------------------*/
83 data_str_cmp (gpointer a, gpointer b, gpointer data)
85 return g_strcmp0(a, b);
89 seq_add_string (GSequence *seq, gchar *str)
95 iter = g_sequence_search (seq, str, (GCompareDataFunc) data_str_cmp, NULL);
96 iter = g_sequence_iter_prev (iter);
98 if (!g_sequence_iter_is_end (iter))
100 item = g_sequence_get (iter);
101 if (g_strcmp0 (item, str))
103 g_sequence_insert_sorted (seq, g_strdup(str), (GCompareDataFunc) data_str_cmp, NULL);
109 g_sequence_insert_sorted (seq, g_strdup(str), (GCompareDataFunc) data_str_cmp, NULL);
117 seq_remove_string (GSequence *seq, gchar *str)
121 gboolean res = FALSE;
123 iter = g_sequence_search (seq, str, (GCompareDataFunc) data_str_cmp, NULL);
124 iter = g_sequence_iter_prev (iter);
126 if (!g_sequence_iter_is_end (iter))
128 item = g_sequence_get (iter);
129 if (!g_strcmp0 (item, str))
131 g_sequence_remove (iter);
139 add_application (DBusConnection *bus, SpiRegistry *reg, gchar *app)
141 if (seq_add_string (reg->apps, app))
143 emit_update_applications (reg, REGISTRY_APPLICATION_ADD, app);
148 remove_application (DBusConnection *bus, SpiRegistry *reg, gchar *app)
150 if (seq_remove_string (reg->apps, app))
152 /*TODO spi_remove_device_listeners (registry->de_controller, old);*/
153 emit_update_applications (reg, REGISTRY_APPLICATION_REMOVE, app);
157 /*---------------------------------------------------------------------------*/
160 add_bus_name_cb (gpointer item, gpointer data)
162 DBusMessageIter *iter_array = (DBusMessageIter *) data;
164 dbus_message_iter_append_basic (iter_array, DBUS_TYPE_STRING, (gchar **) &item);
168 impl_GetApplications (DBusConnection *bus, DBusMessage *message, void *user_data)
170 DBusMessage *reply = NULL;
171 DBusMessageIter iter, iter_array;
172 SpiRegistry *reg = SPI_REGISTRY (user_data);
174 reply = dbus_message_new_method_return (message);
176 dbus_message_iter_init_append (reply, &iter);
177 dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &iter_array);
178 g_sequence_foreach (reg->apps, add_bus_name_cb, &iter_array);
179 dbus_message_iter_close_container(&iter, &iter_array);
183 /*---------------------------------------------------------------------------*/
186 impl_RegisterApplication (DBusConnection *bus, DBusMessage *message, void *user_data)
189 SpiRegistry *reg = SPI_REGISTRY (user_data);
191 if (dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &app_name, DBUS_TYPE_INVALID))
192 add_application(bus, reg, app_name);
197 impl_DeregisterApplication (DBusConnection *bus, DBusMessage *message, void *user_data)
200 SpiRegistry *reg = SPI_REGISTRY (user_data);
202 if (dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &app_name, DBUS_TYPE_INVALID))
203 remove_application(bus, reg, app_name);
207 /*---------------------------------------------------------------------------*/
210 handle_disconnection (DBusConnection *bus, DBusMessage *message, void *user_data)
212 char *name, *old, *new;
213 SpiRegistry *reg = SPI_REGISTRY (user_data);
215 if (dbus_message_get_args (message, NULL,
216 DBUS_TYPE_STRING, &name,
217 DBUS_TYPE_STRING, &old,
218 DBUS_TYPE_STRING, &new,
221 if (*old != '\0' && *new == '\0')
223 remove_application(bus, reg, old);
228 /*---------------------------------------------------------------------------*/
230 static DBusHandlerResult
231 signal_filter (DBusConnection *bus, DBusMessage *message, void *user_data)
233 SpiRegistry *registry = SPI_REGISTRY (user_data);
234 guint res = DBUS_HANDLER_RESULT_HANDLED;
235 const char *iface = dbus_message_get_interface (message);
236 const char *member = dbus_message_get_member (message);
238 if (!g_strcmp0(iface, DBUS_INTERFACE_DBUS) && !g_strcmp0(member, "NameOwnerChanged"))
239 handle_disconnection (bus, message, user_data);
241 res = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
246 /*---------------------------------------------------------------------------*/
248 #define _SPI_DEBUG(format, args...) g_print (format , ## args)
250 static gchar *app_sig_match_name_owner =
251 "type='signal', interface='org.freedesktop.DBus', member='NameOwnerChanged'";
253 static DBusHandlerResult
254 handle_registry_method (DBusConnection *bus, DBusMessage *message, void *user_data)
256 const gchar *iface = dbus_message_get_interface (message);
257 const gchar *member = dbus_message_get_member (message);
258 const gint type = dbus_message_get_type (message);
260 DBusMessage *reply = NULL;
262 /* Check for basic reasons not to handle */
263 if (type != DBUS_MESSAGE_TYPE_METHOD_CALL ||
266 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
268 if (strcmp (iface, SPI_DBUS_INTERFACE_REGISTRY))
269 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
271 if (!strcmp (member, "GetApplications"))
272 reply = impl_GetApplications (bus, message, user_data);
273 else if (!strcmp (member, "RegisterApplication"))
274 reply = impl_RegisterApplication (bus, message, user_data);
275 else if (!strcmp (member, "DeregisterApplication"))
276 reply = impl_DeregisterApplication (bus, message, user_data);
278 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
282 reply = dbus_message_new_method_return (message);
284 dbus_connection_send (bus, reply, NULL);
285 dbus_message_unref (reply);
287 return DBUS_HANDLER_RESULT_HANDLED;
290 static DBusObjectPathVTable registry_vtable =
293 &handle_registry_method,
294 NULL, NULL, NULL, NULL
298 spi_registry_new (DBusConnection *bus)
300 SpiRegistry *reg = g_object_new (SPI_REGISTRY_TYPE, NULL);
304 dbus_bus_add_match (bus, app_sig_match_name_owner, NULL);
305 dbus_connection_add_filter (bus, signal_filter, reg, NULL);
307 dbus_connection_register_object_path (bus, SPI_DBUS_PATH_REGISTRY, ®istry_vtable, reg);
312 /*END------------------------------------------------------------------------*/