1 /* -*- mode: c; style: linux -*- */
2 
3 /* mate-keyboard-properties-xkbltadd.c
4  * Copyright (C) 2007 Sergey V. Udaltsov
5  *
6  * Written by: Sergey V. Udaltsov <svu@gnome.org>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2, or (at your option)
11  * any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21  * 02110-1301, USA.
22  */
23 
24 #ifdef HAVE_CONFIG_H
25 #  include <config.h>
26 #endif
27 
28 #include <string.h>
29 
30 #include <libmatekbd/matekbd-keyboard-drawing.h>
31 #include <libmatekbd/matekbd-util.h>
32 
33 #include "capplet-util.h"
34 #include "mate-keyboard-properties-xkb.h"
35 
36 enum {
37 	COMBO_BOX_MODEL_COL_SORT,
38 	COMBO_BOX_MODEL_COL_VISIBLE,
39 	COMBO_BOX_MODEL_COL_XKB_ID,
40 	COMBO_BOX_MODEL_COL_REAL_ID
41 };
42 
43 typedef void (*LayoutIterFunc) (XklConfigRegistry * config,
44 				ConfigItemProcessFunc func, gpointer data);
45 
46 typedef struct {
47 	GtkListStore *list_store;
48 	const gchar *lang_id;
49 } AddVariantData;
50 
51 static void
52 
53 
54 
55 
56 
57 
58 
59 
60 
61 xkb_layout_chooser_available_layouts_fill (GtkBuilder * chooser_dialog,
62 					   const gchar cblid[],
63 					   const gchar cbvid[],
64 					   LayoutIterFunc layout_iterator,
65 					   ConfigItemProcessFunc
66 					   layout_handler,
67 					   GCallback combo_changed_notify);
68 
69 static void
70 
71 
72 
73 
74 
75 
76 
77 
78 
79 xkb_layout_chooser_available_language_variants_fill (GtkBuilder *
80 						     chooser_dialog);
81 
82 static void
83 
84 
85 
86 
87 
88 
89 
90 
91 
92 xkb_layout_chooser_available_country_variants_fill (GtkBuilder *
93 						    chooser_dialog);
94 
95 static void
xkb_layout_chooser_add_variant_to_available_country_variants(XklConfigRegistry * config_registry,XklConfigItem * parent_config_item,XklConfigItem * config_item,AddVariantData * data)96  xkb_layout_chooser_add_variant_to_available_country_variants
97     (XklConfigRegistry * config_registry,
98      XklConfigItem * parent_config_item, XklConfigItem * config_item,
99      AddVariantData * data) {
100 	gchar *utf_variant_name = config_item ?
101 	    xkb_layout_description_utf8 (matekbd_keyboard_config_merge_items
102 					 (parent_config_item->name,
103 					  config_item->name)) :
104 	    xci_desc_to_utf8 (parent_config_item);
105 	GtkTreeIter iter;
106 	const gchar *xkb_id =
107 	    config_item ?
108 	    matekbd_keyboard_config_merge_items (parent_config_item->name,
109 					      config_item->name) :
110 	    parent_config_item->name;
111 
112 	if (config_item && g_object_get_data
113 	    (G_OBJECT (config_item), XCI_PROP_EXTRA_ITEM)) {
114 		gchar *buf =
115 		    g_strdup_printf ("<i>%s</i>", utf_variant_name);
116 		gtk_list_store_insert_with_values (data->list_store, &iter,
117 						   -1,
118 						   COMBO_BOX_MODEL_COL_SORT,
119 						   utf_variant_name,
120 						   COMBO_BOX_MODEL_COL_VISIBLE,
121 						   buf,
122 						   COMBO_BOX_MODEL_COL_XKB_ID,
123 						   xkb_id, -1);
124 		g_free (buf);
125 	} else
126 		gtk_list_store_insert_with_values (data->list_store, &iter,
127 						   -1,
128 						   COMBO_BOX_MODEL_COL_SORT,
129 						   utf_variant_name,
130 						   COMBO_BOX_MODEL_COL_VISIBLE,
131 						   utf_variant_name,
132 						   COMBO_BOX_MODEL_COL_XKB_ID,
133 						   xkb_id, -1);
134 	g_free (utf_variant_name);
135 }
136 
137 static void
xkb_layout_chooser_add_variant_to_available_language_variants(XklConfigRegistry * config_registry,XklConfigItem * parent_config_item,XklConfigItem * config_item,AddVariantData * data)138  xkb_layout_chooser_add_variant_to_available_language_variants
139     (XklConfigRegistry * config_registry,
140      XklConfigItem * parent_config_item, XklConfigItem * config_item,
141      AddVariantData * data) {
142 	xkb_layout_chooser_add_variant_to_available_country_variants
143 	    (config_registry, parent_config_item, config_item, data);
144 }
145 
146 static void
xkb_layout_chooser_add_language_to_available_languages(XklConfigRegistry * config_registry,XklConfigItem * config_item,GtkListStore * list_store)147 xkb_layout_chooser_add_language_to_available_languages (XklConfigRegistry *
148 							config_registry,
149 							XklConfigItem *
150 							config_item,
151 							GtkListStore *
152 							list_store)
153 {
154 	gtk_list_store_insert_with_values (list_store, NULL, -1,
155 					   COMBO_BOX_MODEL_COL_SORT,
156 					   config_item->description,
157 					   COMBO_BOX_MODEL_COL_VISIBLE,
158 					   config_item->description,
159 					   COMBO_BOX_MODEL_COL_REAL_ID,
160 					   config_item->name, -1);
161 }
162 
163 static void
xkb_layout_chooser_add_country_to_available_countries(XklConfigRegistry * config_registry,XklConfigItem * config_item,GtkListStore * list_store)164 xkb_layout_chooser_add_country_to_available_countries (XklConfigRegistry *
165 						       config_registry,
166 						       XklConfigItem *
167 						       config_item,
168 						       GtkListStore *
169 						       list_store)
170 {
171 	gtk_list_store_insert_with_values (list_store, NULL, -1,
172 					   COMBO_BOX_MODEL_COL_SORT,
173 					   config_item->description,
174 					   COMBO_BOX_MODEL_COL_VISIBLE,
175 					   config_item->description,
176 					   COMBO_BOX_MODEL_COL_REAL_ID,
177 					   config_item->name, -1);
178 }
179 
180 static void
xkb_layout_chooser_enable_disable_buttons(GtkBuilder * chooser_dialog)181 xkb_layout_chooser_enable_disable_buttons (GtkBuilder * chooser_dialog)
182 {
183 	GtkWidget *cbv =
184 	    CWID (gtk_notebook_get_current_page
185 		  (GTK_NOTEBOOK (CWID ("choosers_nb"))) ?
186 		  "xkb_language_variants_available" :
187 		  "xkb_country_variants_available");
188 	GtkTreeIter viter;
189 	gboolean enable_ok =
190 	    gtk_combo_box_get_active_iter (GTK_COMBO_BOX (cbv),
191 					   &viter);
192 
193 	gtk_dialog_set_response_sensitive (GTK_DIALOG
194 					   (CWID
195 					    ("xkb_layout_chooser")),
196 					   GTK_RESPONSE_OK, enable_ok);
197 	gtk_widget_set_sensitive (CWID ("btnPrint"), enable_ok);
198 }
199 
200 static void
xkb_layout_chooser_available_variant_changed(GtkBuilder * chooser_dialog)201 xkb_layout_chooser_available_variant_changed (GtkBuilder * chooser_dialog)
202 {
203 	xkb_layout_preview_update (chooser_dialog);
204 	xkb_layout_chooser_enable_disable_buttons (chooser_dialog);
205 }
206 
207 static void
xkb_layout_chooser_available_language_changed(GtkBuilder * chooser_dialog)208 xkb_layout_chooser_available_language_changed (GtkBuilder * chooser_dialog)
209 {
210 	xkb_layout_chooser_available_language_variants_fill
211 	    (chooser_dialog);
212 	xkb_layout_chooser_available_variant_changed (chooser_dialog);
213 }
214 
215 static void
xkb_layout_chooser_available_country_changed(GtkBuilder * chooser_dialog)216 xkb_layout_chooser_available_country_changed (GtkBuilder * chooser_dialog)
217 {
218 	xkb_layout_chooser_available_country_variants_fill
219 	    (chooser_dialog);
220 	xkb_layout_chooser_available_variant_changed (chooser_dialog);
221 }
222 
223 static void
xkb_layout_chooser_page_changed(GtkWidget * notebook,GtkWidget * page,gint page_num,GtkBuilder * chooser_dialog)224 xkb_layout_chooser_page_changed (GtkWidget * notebook, GtkWidget * page,
225 				 gint page_num,
226 				 GtkBuilder * chooser_dialog)
227 {
228 	xkb_layout_chooser_available_variant_changed (chooser_dialog);
229 }
230 
231 static void
xkb_layout_chooser_available_language_variants_fill(GtkBuilder * chooser_dialog)232 xkb_layout_chooser_available_language_variants_fill (GtkBuilder *
233 						     chooser_dialog)
234 {
235 	GtkWidget *cbl = CWID ("xkb_languages_available");
236 	GtkWidget *cbv = CWID ("xkb_language_variants_available");
237 	GtkListStore *list_store;
238 	GtkTreeIter liter;
239 
240 	list_store = gtk_list_store_new
241 	    (4, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING,
242 	     G_TYPE_STRING);
243 
244 	if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (cbl), &liter)) {
245 		GtkTreeModel *lm =
246 		    gtk_combo_box_get_model (GTK_COMBO_BOX (cbl));
247 		gchar *lang_id;
248 		AddVariantData data = { list_store, 0 };
249 
250 		/* Now the variants of the selected layout */
251 		gtk_tree_model_get (lm, &liter,
252 				    COMBO_BOX_MODEL_COL_REAL_ID,
253 				    &lang_id, -1);
254 		data.lang_id = lang_id;
255 
256 		xkl_config_registry_foreach_language_variant
257 		    (config_registry, lang_id, (TwoConfigItemsProcessFunc)
258 		     xkb_layout_chooser_add_variant_to_available_language_variants,
259 		     &data);
260 		g_free (lang_id);
261 	}
262 
263 	/* Turn on sorting after filling the store, since that's faster */
264 	gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE
265 					      (list_store),
266 					      COMBO_BOX_MODEL_COL_SORT,
267 					      GTK_SORT_ASCENDING);
268 
269 	gtk_combo_box_set_model (GTK_COMBO_BOX (cbv),
270 				 GTK_TREE_MODEL (list_store));
271 	gtk_combo_box_set_active (GTK_COMBO_BOX (cbv), 0);
272 }
273 
274 static void
xkb_layout_chooser_available_country_variants_fill(GtkBuilder * chooser_dialog)275 xkb_layout_chooser_available_country_variants_fill (GtkBuilder *
276 						    chooser_dialog)
277 {
278 	GtkWidget *cbl = CWID ("xkb_countries_available");
279 	GtkWidget *cbv = CWID ("xkb_country_variants_available");
280 	GtkListStore *list_store;
281 	GtkTreeIter liter;
282 
283 	list_store = gtk_list_store_new
284 	    (4, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING,
285 	     G_TYPE_STRING);
286 
287 	if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (cbl), &liter)) {
288 		GtkTreeModel *lm =
289 		    gtk_combo_box_get_model (GTK_COMBO_BOX (cbl));
290 		gchar *country_id;
291 		AddVariantData data = { list_store, 0 };
292 
293 		/* Now the variants of the selected layout */
294 		gtk_tree_model_get (lm, &liter,
295 				    COMBO_BOX_MODEL_COL_REAL_ID,
296 				    &country_id, -1);
297 		xkl_config_registry_foreach_country_variant
298 		    (config_registry, country_id,
299 		     (TwoConfigItemsProcessFunc)
300 		     xkb_layout_chooser_add_variant_to_available_country_variants,
301 		     &data);
302 		g_free (country_id);
303 	}
304 
305 	/* Turn on sorting after filling the store, since that's faster */
306 	gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE
307 					      (list_store),
308 					      COMBO_BOX_MODEL_COL_SORT,
309 					      GTK_SORT_ASCENDING);
310 
311 	gtk_combo_box_set_model (GTK_COMBO_BOX (cbv),
312 				 GTK_TREE_MODEL (list_store));
313 	gtk_combo_box_set_active (GTK_COMBO_BOX (cbv), 0);
314 }
315 
316 static void
xkb_layout_chooser_available_layouts_fill(GtkBuilder * chooser_dialog,const gchar cblid[],const gchar cbvid[],LayoutIterFunc layout_iterator,ConfigItemProcessFunc layout_handler,GCallback combo_changed_notify)317 xkb_layout_chooser_available_layouts_fill (GtkBuilder *
318 					   chooser_dialog,
319 					   const gchar cblid[],
320 					   const gchar cbvid[],
321 					   LayoutIterFunc layout_iterator,
322 					   ConfigItemProcessFunc
323 					   layout_handler,
324 					   GCallback combo_changed_notify)
325 {
326 	GtkWidget *cbl = CWID (cblid);
327 	GtkWidget *cbev = CWID (cbvid);
328 	GtkCellRenderer *renderer;
329 	GtkListStore *list_store;
330 
331 	list_store = gtk_list_store_new
332 	    (4, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING,
333 	     G_TYPE_STRING);
334 
335 	gtk_combo_box_set_model (GTK_COMBO_BOX (cbl),
336 				 GTK_TREE_MODEL (list_store));
337 
338 	renderer = gtk_cell_renderer_text_new ();
339 	gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (cbl), renderer, TRUE);
340 	gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (cbl),
341 					renderer, "markup",
342 					COMBO_BOX_MODEL_COL_VISIBLE, NULL);
343 
344 	layout_iterator (config_registry, layout_handler, list_store);
345 
346 	/* Turn on sorting after filling the model since that's faster */
347 	gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE
348 					      (list_store),
349 					      COMBO_BOX_MODEL_COL_SORT,
350 					      GTK_SORT_ASCENDING);
351 
352 	g_signal_connect_swapped (G_OBJECT (cbl), "changed",
353 				  combo_changed_notify, chooser_dialog);
354 
355 	/* Setup the variants combo */
356 	renderer = gtk_cell_renderer_text_new ();
357 	gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (cbev),
358 				    renderer, TRUE);
359 	gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (cbev),
360 					renderer, "markup",
361 					COMBO_BOX_MODEL_COL_VISIBLE, NULL);
362 
363 	g_signal_connect_swapped (G_OBJECT (cbev), "changed",
364 				  G_CALLBACK
365 				  (xkb_layout_chooser_available_variant_changed),
366 				  chooser_dialog);
367 }
368 
369 static gchar **
xkb_layout_strv_from_gslist(GSList * list)370 xkb_layout_strv_from_gslist (GSList *list)
371 {
372     GArray *array;
373     GSList *l;
374     array = g_array_new (TRUE, TRUE, sizeof (gchar *));
375     for (l = list; l; l = l->next) {
376         array = g_array_append_val (array, l->data);
377     }
378     return (gchar **) array->data;
379 }
380 
381 
382 
383 static void
xkl_layout_chooser_add_default_switcher_if_necessary(GSList * layouts_list)384 xkl_layout_chooser_add_default_switcher_if_necessary (GSList *
385 						      layouts_list)
386 {
387 	GSList *options_list = xkb_options_get_selected_list ();
388 	gboolean was_appended;
389 
390 	gchar **layouts_list_strv = xkb_layout_strv_from_gslist (layouts_list);
391 	gchar **options_list_strv = xkb_layout_strv_from_gslist (options_list);
392 
393 	options_list_strv =
394 	    matekbd_keyboard_config_add_default_switch_option_if_necessary
395 		(layouts_list_strv, options_list_strv, &was_appended);
396 	if (was_appended) {
397 		xkb_options_set_selected_list (options_list);
398 
399 	}
400 	clear_xkb_elements_list (options_list);
401 }
402 
403 static void
xkb_layout_chooser_print(GtkBuilder * chooser_dialog)404 xkb_layout_chooser_print (GtkBuilder * chooser_dialog)
405 {
406 	GtkWidget *chooser = CWID ("xkb_layout_chooser");
407 	GtkWidget *kbdraw =
408 	    GTK_WIDGET (g_object_get_data (G_OBJECT (chooser), "kbdraw"));
409 	const char *id =
410 	    xkb_layout_chooser_get_selected_id (chooser_dialog);
411 	char *descr = xkb_layout_description_utf8 (id);
412 	matekbd_keyboard_drawing_print (MATEKBD_KEYBOARD_DRAWING
413 				     (kbdraw),
414 				     GTK_WINDOW (CWID
415 						 ("xkb_layout_chooser")),
416 				     descr);
417 	g_free (descr);
418 }
419 
420 static void
xkb_layout_chooser_response(GtkDialog * dialog,gint response,GtkBuilder * chooser_dialog)421 xkb_layout_chooser_response (GtkDialog * dialog,
422 			     gint response, GtkBuilder * chooser_dialog)
423 {
424 	GdkRectangle rect;
425 
426 	if (response == GTK_RESPONSE_OK) {
427 		gchar *selected_id = (gchar *)
428 		    xkb_layout_chooser_get_selected_id (chooser_dialog);
429 
430 		if (selected_id != NULL) {
431 			GSList *layouts_list =
432 			    xkb_layouts_get_selected_list ();
433 
434 			selected_id = g_strdup (selected_id);
435 
436 			layouts_list =
437 			    g_slist_append (layouts_list, selected_id);
438 			xkb_layouts_set_selected_list (layouts_list);
439 
440 			xkl_layout_chooser_add_default_switcher_if_necessary
441 			    (layouts_list);
442 
443 			clear_xkb_elements_list (layouts_list);
444 		}
445 	} else if (response == gtk_dialog_get_response_for_widget
446 		   (dialog, CWID ("btnPrint"))) {
447 		xkb_layout_chooser_print (chooser_dialog);
448 		g_signal_stop_emission_by_name (dialog, "response");
449 		return;
450 	}
451 
452 	gtk_window_get_position (GTK_WINDOW (dialog), &rect.x, &rect.y);
453 	gtk_window_get_size (GTK_WINDOW (dialog), &rect.width,
454 			     &rect.height);
455 	matekbd_preview_save_position (&rect);
456 }
457 
458 void
xkb_layout_choose(GtkBuilder * dialog)459 xkb_layout_choose (GtkBuilder * dialog)
460 {
461 	GtkBuilder *chooser_dialog;
462 
463 	chooser_dialog = gtk_builder_new ();
464 	gtk_builder_add_from_resource (chooser_dialog,
465 				       "/org/mate/mcc/keyboard/mate-keyboard-properties-layout-chooser.ui",
466 				       NULL);
467 	GtkWidget *chooser = CWID ("xkb_layout_chooser");
468 	GtkWidget *lang_chooser = CWID ("xkb_languages_available");
469 	GtkWidget *notebook = CWID ("choosers_nb");
470 	GtkWidget *kbdraw = NULL;
471 	GtkWidget *toplevel = NULL;
472 
473 	gtk_window_set_transient_for (GTK_WINDOW (chooser),
474 				      GTK_WINDOW (WID
475 						  ("keyboard_dialog")));
476 
477 	xkb_layout_chooser_available_layouts_fill (chooser_dialog,
478 						   "xkb_countries_available",
479 						   "xkb_country_variants_available",
480 						   xkl_config_registry_foreach_country,
481 						   (ConfigItemProcessFunc)
482 						   xkb_layout_chooser_add_country_to_available_countries,
483 						   G_CALLBACK
484 						   (xkb_layout_chooser_available_country_changed));
485 	xkb_layout_chooser_available_layouts_fill (chooser_dialog,
486 						   "xkb_languages_available",
487 						   "xkb_language_variants_available",
488 						   xkl_config_registry_foreach_language,
489 						   (ConfigItemProcessFunc)
490 						   xkb_layout_chooser_add_language_to_available_languages,
491 						   G_CALLBACK
492 						   (xkb_layout_chooser_available_language_changed));
493 
494 	g_signal_connect_after (G_OBJECT (notebook), "switch_page",
495 				G_CALLBACK
496 				(xkb_layout_chooser_page_changed),
497 				chooser_dialog);
498 
499 	gtk_combo_box_set_active (GTK_COMBO_BOX
500 				  (CWID ("xkb_countries_available")),
501 				  FALSE);
502 
503 	if (gtk_tree_model_iter_n_children
504 	    (gtk_combo_box_get_model (GTK_COMBO_BOX (lang_chooser)),
505 	     NULL)) {
506 		gtk_combo_box_set_active (GTK_COMBO_BOX
507 					  (CWID
508 					   ("xkb_languages_available")),
509 					  FALSE);
510 	} else {
511 		/* If language info is not available - remove the corresponding tab,
512 		   pretend there is no notebook at all */
513 		gtk_notebook_remove_page (GTK_NOTEBOOK (notebook), 1);
514 		gtk_notebook_set_show_tabs (GTK_NOTEBOOK (notebook),
515 					    FALSE);
516 		gtk_notebook_set_show_border (GTK_NOTEBOOK (notebook),
517 					      FALSE);
518 	}
519 
520 #ifdef HAVE_X11_EXTENSIONS_XKB_H
521 	if (!strcmp (xkl_engine_get_backend_name (engine), "XKB")) {
522 		kbdraw = xkb_layout_preview_create_widget (chooser_dialog);
523 		g_object_set_data (G_OBJECT (chooser), "kbdraw", kbdraw);
524 		gtk_container_add (GTK_CONTAINER
525 				   (CWID ("previewFrame")), kbdraw);
526 		gtk_widget_show_all (kbdraw);
527 		gtk_button_box_set_child_secondary (GTK_BUTTON_BOX
528 						    (CWID
529 						     ("hbtnBox")),
530 						    CWID
531 						    ("btnPrint"), TRUE);
532 	} else
533 #endif
534 	{
535 		gtk_widget_hide (CWID ("vboxPreview"));
536 		gtk_widget_hide (CWID ("btnPrint"));
537 	}
538 
539 	g_signal_connect (G_OBJECT (chooser),
540 			  "response",
541 			  G_CALLBACK (xkb_layout_chooser_response),
542 			  chooser_dialog);
543 
544 	toplevel = gtk_widget_get_toplevel (chooser);
545 	if (gtk_widget_is_toplevel (toplevel)) {
546 		GdkRectangle *rect = matekbd_preview_load_position ();
547 		if (rect != NULL) {
548 			gtk_window_move (GTK_WINDOW (toplevel),
549 					 rect->x, rect->y);
550 			gtk_window_resize (GTK_WINDOW (toplevel),
551 					   rect->width, rect->height);
552 			g_free (rect);
553 		}
554 	}
555 
556 	xkb_layout_preview_update (chooser_dialog);
557 	gtk_dialog_run (GTK_DIALOG (chooser));
558 	gtk_widget_destroy (chooser);
559 }
560 
561 gchar *
xkb_layout_chooser_get_selected_id(GtkBuilder * chooser_dialog)562 xkb_layout_chooser_get_selected_id (GtkBuilder * chooser_dialog)
563 {
564 	GtkWidget *cbv =
565 	    CWID (gtk_notebook_get_current_page
566 		  (GTK_NOTEBOOK (CWID ("choosers_nb"))) ?
567 		  "xkb_language_variants_available" :
568 		  "xkb_country_variants_available");
569 	GtkTreeModel *vm = gtk_combo_box_get_model (GTK_COMBO_BOX (cbv));
570 	GtkTreeIter viter;
571 	gchar *v_id;
572 
573 	if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (cbv), &viter))
574 		return NULL;
575 
576 	gtk_tree_model_get (vm, &viter,
577 			    COMBO_BOX_MODEL_COL_XKB_ID, &v_id, -1);
578 
579 	return v_id;
580 }
581