1 | /* |
---|
2 | * AT-SPI - Assistive Technology Service Provider Interface |
---|
3 | * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap) |
---|
4 | * |
---|
5 | * Copyright 2001 Sun Microsystems Inc. |
---|
6 | * |
---|
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. |
---|
11 | * |
---|
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. |
---|
16 | * |
---|
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. |
---|
21 | */ |
---|
22 | |
---|
23 | /* application.c: implements SpiApplication.idl */ |
---|
24 | |
---|
25 | #include <string.h> |
---|
26 | #include <config.h> |
---|
27 | #include <atk/atkutil.h> |
---|
28 | #include <libspi/application.h> |
---|
29 | |
---|
30 | /* Our parent Gtk object type */ |
---|
31 | #define PARENT_TYPE SPI_ACCESSIBLE_TYPE |
---|
32 | |
---|
33 | /* A pointer to our parent object class */ |
---|
34 | static SpiAccessibleClass *spi_application_parent_class; |
---|
35 | |
---|
36 | static SpiApplication *the_app; |
---|
37 | |
---|
38 | /* static methods */ |
---|
39 | |
---|
40 | static void notify_listeners (GList *listeners, |
---|
41 | SpiAccessible *source, |
---|
42 | Accessibility_Event *e); |
---|
43 | |
---|
44 | static const char *reverse_lookup_name_for_toolkit_event (char *toolkit_name); |
---|
45 | |
---|
46 | static const char * |
---|
47 | lookup_toolkit_event_for_name (const char *generic_name) |
---|
48 | { |
---|
49 | char *toolkit_specific_name; |
---|
50 | SpiApplicationClass *klass = g_type_class_peek (SPI_APPLICATION_TYPE); |
---|
51 | #ifdef SPI_DEBUG |
---|
52 | fprintf (stderr, "looking for %s in hash table.\n", generic_name); |
---|
53 | #endif |
---|
54 | toolkit_specific_name = |
---|
55 | (char *) g_hash_table_lookup (klass->toolkit_event_names, generic_name); |
---|
56 | #ifdef SPI_DEBUG |
---|
57 | fprintf (stderr, "generic event %s converted to %s\n", generic_name, toolkit_specific_name); |
---|
58 | #endif |
---|
59 | return toolkit_specific_name; |
---|
60 | } |
---|
61 | |
---|
62 | /* |
---|
63 | * Implemented GObject::finalize |
---|
64 | */ |
---|
65 | static void |
---|
66 | spi_accessible_application_finalize (GObject *object) |
---|
67 | { |
---|
68 | GList *l; |
---|
69 | SpiApplication *application = (SpiApplication *) object; |
---|
70 | CORBA_Environment ev; |
---|
71 | |
---|
72 | CORBA_exception_init (&ev); |
---|
73 | |
---|
74 | for (l = application->toolkit_listeners; l; l = l->next) |
---|
75 | { |
---|
76 | CORBA_Object_release ((CORBA_Object) l->data, &ev); |
---|
77 | } |
---|
78 | |
---|
79 | CORBA_exception_free (&ev); |
---|
80 | |
---|
81 | g_list_free (application->toolkit_listeners); |
---|
82 | application->toolkit_listeners = NULL; |
---|
83 | |
---|
84 | g_print ("application finalize called\n"); |
---|
85 | (G_OBJECT_CLASS (spi_application_parent_class))->finalize (object); |
---|
86 | } |
---|
87 | |
---|
88 | static CORBA_string |
---|
89 | impl_accessibility_application_get_toolkit_name (PortableServer_Servant servant, |
---|
90 | CORBA_Environment *ev) |
---|
91 | { |
---|
92 | return CORBA_string_dup (atk_get_toolkit_name ()); |
---|
93 | } |
---|
94 | |
---|
95 | static CORBA_string |
---|
96 | impl_accessibility_application_get_version (PortableServer_Servant servant, |
---|
97 | CORBA_Environment *ev) |
---|
98 | { |
---|
99 | return CORBA_string_dup (atk_get_toolkit_version ()); |
---|
100 | } |
---|
101 | |
---|
102 | static CORBA_long |
---|
103 | impl_accessibility_application_get_id (PortableServer_Servant servant, |
---|
104 | CORBA_Environment *ev) |
---|
105 | { |
---|
106 | SpiApplication *application = SPI_APPLICATION ( |
---|
107 | bonobo_object_from_servant (servant)); |
---|
108 | |
---|
109 | return application->id; |
---|
110 | } |
---|
111 | |
---|
112 | static void |
---|
113 | impl_accessibility_application_set_id (PortableServer_Servant servant, |
---|
114 | const CORBA_long id, |
---|
115 | CORBA_Environment *ev) |
---|
116 | { |
---|
117 | SpiApplication *application = SPI_APPLICATION ( |
---|
118 | bonobo_object_from_servant (servant)); |
---|
119 | |
---|
120 | application->id = id; |
---|
121 | } |
---|
122 | |
---|
123 | static AtkObject * |
---|
124 | get_atk_object_ref (GObject *gobject) |
---|
125 | { |
---|
126 | AtkObject *aobject; |
---|
127 | |
---|
128 | if (ATK_IS_IMPLEMENTOR (gobject)) |
---|
129 | { |
---|
130 | aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject)); |
---|
131 | } |
---|
132 | else if (ATK_IS_OBJECT (gobject)) |
---|
133 | { |
---|
134 | aobject = ATK_OBJECT (gobject); |
---|
135 | g_object_ref (G_OBJECT (aobject)); |
---|
136 | } |
---|
137 | else |
---|
138 | { |
---|
139 | aobject = NULL; |
---|
140 | g_error ("received event from non-AtkImplementor"); |
---|
141 | } |
---|
142 | |
---|
143 | return aobject; |
---|
144 | } |
---|
145 | |
---|
146 | static gboolean |
---|
147 | spi_application_object_event_listener (GSignalInvocationHint *signal_hint, |
---|
148 | guint n_param_values, |
---|
149 | const GValue *param_values, |
---|
150 | gpointer data) |
---|
151 | { |
---|
152 | Accessibility_Event e; |
---|
153 | AtkObject *aobject; |
---|
154 | SpiAccessible *source; |
---|
155 | GSignalQuery signal_query; |
---|
156 | gchar *event_name; |
---|
157 | const char *generic_name; |
---|
158 | |
---|
159 | g_return_val_if_fail (the_app != NULL, FALSE); |
---|
160 | |
---|
161 | g_signal_query (signal_hint->signal_id, &signal_query); |
---|
162 | |
---|
163 | /* TODO: move GTK reference out of app.c into bridge */ |
---|
164 | event_name = g_strdup_printf ("Gtk:%s:%s", |
---|
165 | g_type_name (signal_query.itype), |
---|
166 | signal_query.signal_name); |
---|
167 | |
---|
168 | generic_name = reverse_lookup_name_for_toolkit_event (event_name); |
---|
169 | |
---|
170 | fprintf (stderr, "Received (object) signal %s maps to '%s'\n", |
---|
171 | event_name, generic_name); |
---|
172 | |
---|
173 | g_free (event_name); |
---|
174 | |
---|
175 | g_return_val_if_fail (generic_name, FALSE); |
---|
176 | |
---|
177 | aobject = get_atk_object_ref (g_value_get_object (param_values + 0)); |
---|
178 | |
---|
179 | source = spi_accessible_new (aobject); |
---|
180 | e.type = CORBA_string_dup (generic_name); |
---|
181 | e.source = CORBA_OBJECT_NIL; |
---|
182 | e.detail1 = 0; |
---|
183 | e.detail2 = 0; |
---|
184 | |
---|
185 | notify_listeners (the_app->toolkit_listeners, source, &e); |
---|
186 | |
---|
187 | bonobo_object_unref (BONOBO_OBJECT (source)); |
---|
188 | |
---|
189 | g_object_unref (G_OBJECT (aobject)); |
---|
190 | |
---|
191 | return TRUE; |
---|
192 | } |
---|
193 | |
---|
194 | static gboolean |
---|
195 | spi_application_toolkit_event_listener (GSignalInvocationHint *signal_hint, |
---|
196 | guint n_param_values, |
---|
197 | const GValue *param_values, |
---|
198 | gpointer data) |
---|
199 | { |
---|
200 | Accessibility_Event e; |
---|
201 | AtkObject *aobject; |
---|
202 | SpiAccessible *source; |
---|
203 | GSignalQuery signal_query; |
---|
204 | char *event_name; |
---|
205 | |
---|
206 | g_return_val_if_fail (the_app != NULL, FALSE); |
---|
207 | |
---|
208 | g_signal_query (signal_hint->signal_id, &signal_query); |
---|
209 | |
---|
210 | /* TODO: move GTK reference out of app.c into bridge */ |
---|
211 | event_name = g_strdup_printf ("Gtk:%s:%s", |
---|
212 | g_type_name (signal_query.itype), |
---|
213 | signal_query.signal_name); |
---|
214 | |
---|
215 | #ifdef SPI_DEBUG |
---|
216 | fprintf (stderr, "Received signal %s\n", event_name); |
---|
217 | #endif |
---|
218 | |
---|
219 | aobject = get_atk_object_ref (g_value_get_object (param_values + 0)); |
---|
220 | |
---|
221 | source = spi_accessible_new (aobject); |
---|
222 | e.type = CORBA_string_dup (event_name); |
---|
223 | e.source = CORBA_OBJECT_NIL; |
---|
224 | e.detail1 = 0; |
---|
225 | e.detail2 = 0; |
---|
226 | notify_listeners (the_app->toolkit_listeners, source, &e); |
---|
227 | |
---|
228 | bonobo_object_unref (BONOBO_OBJECT (source)); |
---|
229 | g_object_unref (G_OBJECT (aobject)); |
---|
230 | |
---|
231 | g_free (event_name); |
---|
232 | |
---|
233 | return TRUE; |
---|
234 | } |
---|
235 | |
---|
236 | static void |
---|
237 | impl_accessibility_application_register_toolkit_event_listener (PortableServer_Servant servant, |
---|
238 | Accessibility_EventListener listener, |
---|
239 | const CORBA_char *event_name, |
---|
240 | CORBA_Environment *ev) |
---|
241 | { |
---|
242 | guint spi_listener_id; |
---|
243 | spi_listener_id = |
---|
244 | atk_add_global_event_listener (spi_application_toolkit_event_listener, event_name); |
---|
245 | the_app->toolkit_listeners = g_list_append (the_app->toolkit_listeners, |
---|
246 | CORBA_Object_duplicate (listener, ev)); |
---|
247 | #ifdef SPI_DEBUG |
---|
248 | fprintf (stderr, "registered %d for toolkit events named: %s\n", |
---|
249 | spi_listener_id, |
---|
250 | event_name); |
---|
251 | #endif |
---|
252 | } |
---|
253 | |
---|
254 | static void |
---|
255 | impl_accessibility_application_register_object_event_listener (PortableServer_Servant servant, |
---|
256 | Accessibility_EventListener listener, |
---|
257 | const CORBA_char *event_name, |
---|
258 | CORBA_Environment *ev) |
---|
259 | { |
---|
260 | guint spi_listener_id = 0; |
---|
261 | const char *toolkit_specific_event_name = |
---|
262 | lookup_toolkit_event_for_name (event_name); |
---|
263 | if (toolkit_specific_event_name) |
---|
264 | { |
---|
265 | spi_listener_id = |
---|
266 | atk_add_global_event_listener (spi_application_object_event_listener, |
---|
267 | toolkit_specific_event_name); |
---|
268 | the_app->toolkit_listeners = g_list_append (the_app->toolkit_listeners, |
---|
269 | CORBA_Object_duplicate (listener, ev)); |
---|
270 | } |
---|
271 | #ifdef SPI_DEBUG |
---|
272 | fprintf (stderr, "registered %d for object events named: %s\n", |
---|
273 | spi_listener_id, |
---|
274 | event_name); |
---|
275 | #endif |
---|
276 | } |
---|
277 | |
---|
278 | static void |
---|
279 | notify_listeners (GList *listeners, SpiAccessible *source, Accessibility_Event *e) |
---|
280 | { |
---|
281 | GList *l; |
---|
282 | CORBA_Environment ev; |
---|
283 | |
---|
284 | CORBA_exception_init (&ev); |
---|
285 | |
---|
286 | for (l = listeners; l; l = l->next) |
---|
287 | { |
---|
288 | Accessibility_EventListener listener = l->data; |
---|
289 | |
---|
290 | e->source = bonobo_object_dup_ref (BONOBO_OBJREF (source), &ev); |
---|
291 | |
---|
292 | Accessibility_EventListener_notifyEvent (listener, e, &ev); |
---|
293 | /* |
---|
294 | * when this (oneway) call completes, the CORBA refcount and |
---|
295 | * Bonobo_Unknown refcount will be decremented by the recipient |
---|
296 | */ |
---|
297 | CORBA_exception_free (&ev); |
---|
298 | } |
---|
299 | } |
---|
300 | |
---|
301 | static const char * |
---|
302 | reverse_lookup_name_for_toolkit_event (char *toolkit_specific_name) |
---|
303 | { |
---|
304 | const char *generic_name; |
---|
305 | SpiApplicationClass *klass = g_type_class_peek (SPI_APPLICATION_TYPE); |
---|
306 | #ifdef SPI_DEBUG |
---|
307 | fprintf (stderr, "(reverse lookup) looking for %s in hash table.\n", toolkit_specific_name); |
---|
308 | #endif |
---|
309 | generic_name = |
---|
310 | (const char *) g_hash_table_lookup (klass->generic_event_names, toolkit_specific_name); |
---|
311 | #ifdef SPI_DEBUG |
---|
312 | fprintf (stderr, "toolkit event %s converted to %s\n", toolkit_specific_name, generic_name); |
---|
313 | #endif |
---|
314 | return generic_name; |
---|
315 | } |
---|
316 | |
---|
317 | static void |
---|
318 | init_toolkit_names (GHashTable **generic_event_names, GHashTable **toolkit_event_names) |
---|
319 | { |
---|
320 | *toolkit_event_names = g_hash_table_new (g_str_hash, g_str_equal); |
---|
321 | *generic_event_names = g_hash_table_new (g_str_hash, g_str_equal); |
---|
322 | g_hash_table_insert (*toolkit_event_names, |
---|
323 | "object:property-change", |
---|
324 | "Gtk:AtkObject:property-change"); |
---|
325 | g_hash_table_insert (*generic_event_names, |
---|
326 | "Gtk:AtkObject:property-change", |
---|
327 | "object:property-change"); |
---|
328 | #ifdef SPI_DEBUG |
---|
329 | fprintf (stderr, "inserted spi_selection_changed hash\n"); |
---|
330 | #endif |
---|
331 | } |
---|
332 | |
---|
333 | static void |
---|
334 | spi_application_class_init (SpiApplicationClass *klass) |
---|
335 | { |
---|
336 | GObjectClass * object_class = (GObjectClass *) klass; |
---|
337 | POA_Accessibility_Application__epv *epv = &klass->epv; |
---|
338 | |
---|
339 | spi_application_parent_class = g_type_class_ref (SPI_ACCESSIBLE_TYPE); |
---|
340 | |
---|
341 | object_class->finalize = spi_accessible_application_finalize; |
---|
342 | |
---|
343 | epv->_get_toolkitName = impl_accessibility_application_get_toolkit_name; |
---|
344 | epv->_get_version = impl_accessibility_application_get_version; |
---|
345 | epv->_get_id = impl_accessibility_application_get_id; |
---|
346 | epv->_set_id = impl_accessibility_application_set_id; |
---|
347 | epv->registerToolkitEventListener = impl_accessibility_application_register_toolkit_event_listener; |
---|
348 | init_toolkit_names (&klass->generic_event_names, &klass->toolkit_event_names); |
---|
349 | } |
---|
350 | |
---|
351 | static void |
---|
352 | spi_application_init (SpiApplication *application) |
---|
353 | { |
---|
354 | application->toolkit_listeners = NULL; |
---|
355 | the_app = application; |
---|
356 | } |
---|
357 | |
---|
358 | BONOBO_TYPE_FUNC_FULL (SpiApplication, |
---|
359 | Accessibility_Application, |
---|
360 | PARENT_TYPE, spi_application); |
---|
361 | |
---|
362 | SpiApplication * |
---|
363 | spi_application_new (AtkObject *app_root) |
---|
364 | { |
---|
365 | return SPI_APPLICATION (spi_accessible_construct ( |
---|
366 | SPI_APPLICATION_TYPE, app_root)); |
---|
367 | } |
---|