2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2008 Novell, 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.
27 #include <glib-object.h>
28 #include <dbus/dbus.h>
30 #include "spi-types.h"
34 spi_dbus_general_error (DBusMessage * message)
36 return dbus_message_new_error (message,
37 "org.freedesktop.atspi.GeneralError",
44 spi_dbus_return_rect (DBusMessage * message, gint ix, gint iy, gint iwidth,
48 dbus_uint32_t x, y, width, height;
54 reply = dbus_message_new_method_return (message);
57 DBusMessageIter iter, sub;
58 dbus_message_iter_init_append (reply, &iter);
59 if (!dbus_message_iter_open_container
60 (&iter, DBUS_TYPE_STRUCT, NULL, &sub))
62 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &x);
63 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &y);
64 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &width);
65 dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &height);
66 if (!dbus_message_iter_close_container (&iter, &sub))
71 /* todo: return an error */
75 void spi_dbus_emit_valist(DBusConnection *bus, const char *path, const char *interface, const char *name, int first_arg_type, va_list args)
79 sig = dbus_message_new_signal(path, interface, name);
80 if (first_arg_type != DBUS_TYPE_INVALID)
82 dbus_message_append_args_valist(sig, first_arg_type, args);
84 dbus_connection_send(bus, sig, NULL);
85 dbus_message_unref(sig);
88 dbus_bool_t spi_dbus_message_iter_get_struct(DBusMessageIter *iter, ...)
91 DBusMessageIter iter_struct;
95 dbus_message_iter_recurse(iter, &iter_struct);
99 type = va_arg(args, int);
100 if (type == DBUS_TYPE_INVALID) break;
101 if (type != dbus_message_iter_get_arg_type(&iter_struct))
106 ptr = va_arg(args, void *);
107 dbus_message_iter_get_basic(&iter_struct, ptr);
108 dbus_message_iter_next(&iter_struct);
110 dbus_message_iter_next(iter);
115 dbus_bool_t spi_dbus_message_iter_append_struct(DBusMessageIter *iter, ...)
118 DBusMessageIter iter_struct;
122 if (!dbus_message_iter_open_container(iter, DBUS_TYPE_STRUCT, NULL, &iter_struct)) return FALSE;
123 va_start(args, iter);
126 type = va_arg(args, int);
127 if (type == DBUS_TYPE_INVALID) break;
128 ptr = va_arg(args, void *);
129 dbus_message_iter_append_basic(&iter_struct, type, ptr);
131 if (!dbus_message_iter_close_container(iter, &iter_struct)) return FALSE;
136 dbus_bool_t spi_dbus_marshal_deviceEvent(DBusMessage *message, const Accessibility_DeviceEvent *e)
138 DBusMessageIter iter;
140 if (!message) return FALSE;
141 dbus_message_iter_init_append(message, &iter);
142 return spi_dbus_message_iter_append_struct(&iter, DBUS_TYPE_UINT32, &e->type, DBUS_TYPE_INT32, &e->id, DBUS_TYPE_INT16, &e->hw_code, DBUS_TYPE_INT16, &e->modifiers, DBUS_TYPE_INT32, &e->timestamp, DBUS_TYPE_STRING, &e->event_string, DBUS_TYPE_BOOLEAN, &e->is_text, DBUS_TYPE_INVALID);
145 dbus_bool_t spi_dbus_demarshal_deviceEvent(DBusMessage *message, Accessibility_DeviceEvent *e)
147 DBusMessageIter iter;
149 dbus_message_iter_init(message, &iter);
150 return spi_dbus_message_iter_get_struct(&iter, DBUS_TYPE_UINT32, &e->type, DBUS_TYPE_INT32, &e->id, DBUS_TYPE_INT16, &e->hw_code, DBUS_TYPE_INT16, &e->modifiers, DBUS_TYPE_INT32, &e->timestamp, DBUS_TYPE_STRING, &e->event_string, DBUS_TYPE_BOOLEAN, &e->is_text, DBUS_TYPE_INVALID);
154 * This is a rather annoying function needed to replace
155 * NULL values of strings with the empty string. Null string
156 * values can be created by the atk_object_get_name or text selection
159 provide_defaults(const gint type,
164 case DBUS_TYPE_STRING:
165 case DBUS_TYPE_OBJECT_PATH:
176 spi_dbus_emit_signal(DBusConnection *bus, const char *path,
180 dbus_int32_t detail1,
181 dbus_int32_t detail2,
187 DBusMessageIter iter, sub;
188 if (!klass) klass = "";
189 if (!major) major = "";
190 if (!minor) minor = "";
191 if (!type) type = "u";
194 * This is very annoying, but as '-' isn't a legal signal
195 * name in D-Bus (Why not??!?) The names need converting
196 * on this side, and again on the client side.
198 cname = g_strdup(major);
199 while ((t = strchr(cname, '-')) != NULL) *t = '_';
201 sig = dbus_message_new_signal(path, klass, cname);
204 dbus_message_iter_init_append(sig, &iter);
206 dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor);
207 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
208 dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
210 dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT, type, &sub);
212 * I need to convert the string signature to an integer type signature.
213 * DBUS_TYPE_INT32 is defined as 'i' whereas the string is "i".
214 * I should just be able to cast the first character of the string to an
217 val = provide_defaults((int) *type, val);
218 dbus_message_iter_append_basic(&sub, (int) *type, &val);
219 dbus_message_iter_close_container(&iter, &sub);
221 dbus_connection_send(bus, sig, NULL);
222 dbus_message_unref(sig);
226 dbus_bool_t spi_dbus_get_simple_property (DBusConnection *bus, const char *dest, const char *path, const char *interface, const char *prop, int *type, void *ptr, DBusError *error)
228 DBusMessage *message, *reply;
229 DBusMessageIter iter, iter_variant;
232 dbus_error_init (error);
233 message = dbus_message_new_method_call (dest, path, "org.freedesktop.DBus.Properties", "get");
234 if (!message) return FALSE;
235 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &prop, DBUS_TYPE_INVALID))
239 reply = dbus_connection_send_with_reply_and_block (bus, message, 1000, error);
240 dbus_message_unref (message);
241 if (!reply) return FALSE;
242 dbus_message_iter_init (reply, &iter);
243 dbus_message_iter_recurse (&iter, &iter_variant);
244 typ = dbus_message_iter_get_arg_type (&iter_variant);
245 if (type) *type = typ;
246 if (typ == DBUS_TYPE_INVALID || typ == DBUS_TYPE_STRUCT || typ == DBUS_TYPE_ARRAY)
250 dbus_message_iter_get_basic (&iter_variant, ptr);
251 dbus_message_unref (reply);