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Viewing changes to gui/simple-greeter/gdm-language-option-widget.c

  • Committer: Bazaar Package Importer
  • Author(s): Josselin Mouette
  • Date: 2010-03-25 20:02:20 UTC
  • Revision ID: james.westby@ubuntu.com-20100325200220-12cap62s6p304nuh
Tags: upstream-2.29.92
Import upstream version 2.29.92

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gui/simple-greeter/gdm-language-option-widget.c
 
1
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
 
2
 *
 
3
 * Copyright (C) 2008 Red Hat, Inc.
 
4
 *
 
5
 * This program is free software; you can redistribute it and/or modify
 
6
 * it under the terms of the GNU General Public License as published by
 
7
 * the Free Software Foundation; either version 2 of the License, or
 
8
 * (at your option) any later version.
 
9
 *
 
10
 * This program is distributed in the hope that it will be useful,
 
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
13
 * GNU General Public License for more details.
 
14
 *
 
15
 * You should have received a copy of the GNU General Public License
 
16
 * along with this program; if not, write to the Free Software
 
17
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
18
 *
 
19
 * Written by: Ray Strode <rstrode@redhat.com>
 
20
 *
 
21
 */
 
22
 
 
23
#include "config.h"
 
24
 
 
25
#include <stdlib.h>
 
26
#include <stdio.h>
 
27
#include <unistd.h>
 
28
#include <string.h>
 
29
#include <errno.h>
 
30
#include <dirent.h>
 
31
#include <sys/stat.h>
 
32
 
 
33
#include <glib.h>
 
34
#include <glib/gi18n.h>
 
35
#include <glib/gstdio.h>
 
36
#include <gtk/gtk.h>
 
37
 
 
38
#include "gdm-profile.h"
 
39
#include "gdm-languages.h"
 
40
#include "gdm-language-option-widget.h"
 
41
#include "gdm-recent-option-widget.h"
 
42
#include "gdm-language-chooser-dialog.h"
 
43
 
 
44
#define GDM_LANGUAGE_OPTION_WIDGET_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_LANGUAGE_OPTION_WIDGET, GdmLanguageOptionWidgetPrivate))
 
45
 
 
46
struct GdmLanguageOptionWidgetPrivate
 
47
{
 
48
        GtkWidget *dialog;
 
49
};
 
50
 
 
51
enum {
 
52
        LANGUAGE_ACTIVATED,
 
53
        DIALOG_HIDDEN,
 
54
        NUMBER_OF_SIGNALS
 
55
};
 
56
 
 
57
static guint signals [NUMBER_OF_SIGNALS] = { 0, };
 
58
 
 
59
static void     gdm_language_option_widget_class_init  (GdmLanguageOptionWidgetClass *klass);
 
60
static void     gdm_language_option_widget_init        (GdmLanguageOptionWidget      *language_option_widget);
 
61
static void     gdm_language_option_widget_finalize    (GObject                      *object);
 
62
static void     gdm_language_option_widget_hide_dialog (GdmLanguageOptionWidget      *widget);
 
63
 
 
64
G_DEFINE_TYPE (GdmLanguageOptionWidget, gdm_language_option_widget, GDM_TYPE_RECENT_OPTION_WIDGET)
 
65
 
 
66
static void
 
67
gdm_language_option_widget_set_language_from_dialog (GdmLanguageOptionWidget *widget)
 
68
{
 
69
        char *language_name;
 
70
 
 
71
        language_name = gdm_language_chooser_dialog_get_current_language_name (GDM_LANGUAGE_CHOOSER_DIALOG (widget->priv->dialog));
 
72
        gdm_language_option_widget_set_current_language_name (widget, language_name);
 
73
        g_free (language_name);
 
74
}
 
75
 
 
76
static void
 
77
on_dialog_response (GtkDialog               *dialog,
 
78
                    int                      response_id,
 
79
                    GdmLanguageOptionWidget *widget)
 
80
{
 
81
        switch (response_id) {
 
82
                case GTK_RESPONSE_OK:
 
83
                        gdm_language_option_widget_set_language_from_dialog (widget);
 
84
                        break;
 
85
 
 
86
                default:
 
87
                        break;
 
88
        }
 
89
 
 
90
        gdm_language_option_widget_hide_dialog (widget);
 
91
}
 
92
 
 
93
static void
 
94
gdm_language_option_widget_hide_dialog (GdmLanguageOptionWidget *widget)
 
95
{
 
96
        gtk_widget_destroy (widget->priv->dialog);
 
97
        widget->priv->dialog = NULL;
 
98
        g_signal_emit (G_OBJECT (widget), signals[DIALOG_HIDDEN], 0);
 
99
}
 
100
 
 
101
static void
 
102
create_dialog (GdmLanguageOptionWidget *widget)
 
103
{
 
104
        gdm_profile_start (NULL);
 
105
 
 
106
        g_assert (widget->priv->dialog == NULL);
 
107
 
 
108
        widget->priv->dialog = gdm_language_chooser_dialog_new ();
 
109
 
 
110
        gdm_profile_end (NULL);
 
111
}
 
112
 
 
113
static void
 
114
gdm_language_option_widget_show_dialog (GdmLanguageOptionWidget *widget,
 
115
                                        const char              *active_item_id)
 
116
{
 
117
        if (widget->priv->dialog == NULL) {
 
118
                create_dialog (widget);
 
119
        }
 
120
 
 
121
        g_signal_connect (GTK_DIALOG (widget->priv->dialog),
 
122
                          "response",
 
123
                          G_CALLBACK (on_dialog_response),
 
124
                          widget);
 
125
 
 
126
        gtk_widget_show_all (GTK_WIDGET (widget->priv->dialog));
 
127
 
 
128
        gdm_language_chooser_dialog_set_current_language_name (GDM_LANGUAGE_CHOOSER_DIALOG (GDM_LANGUAGE_OPTION_WIDGET (widget)->priv->dialog),
 
129
                                                               active_item_id);
 
130
}
 
131
 
 
132
static void
 
133
gdm_language_option_widget_activated (GdmOptionWidget *widget)
 
134
{
 
135
        char *active_item_id;
 
136
 
 
137
        active_item_id = gdm_option_widget_get_active_item (GDM_OPTION_WIDGET (widget));
 
138
        if (active_item_id == NULL) {
 
139
                return;
 
140
        }
 
141
 
 
142
        if (strcmp (active_item_id, "__other") == 0) {
 
143
                g_free (active_item_id);
 
144
 
 
145
                active_item_id = gdm_option_widget_get_default_item (widget);
 
146
                gdm_language_option_widget_set_current_language_name (GDM_LANGUAGE_OPTION_WIDGET (widget), active_item_id);
 
147
                gdm_language_option_widget_show_dialog (GDM_LANGUAGE_OPTION_WIDGET (widget), active_item_id);
 
148
        }
 
149
 
 
150
        g_signal_emit (G_OBJECT (widget), signals[LANGUAGE_ACTIVATED], 0);
 
151
 
 
152
        g_free (active_item_id);
 
153
}
 
154
 
 
155
static void
 
156
gdm_language_option_widget_class_init (GdmLanguageOptionWidgetClass *klass)
 
157
{
 
158
        GObjectClass         *object_class = G_OBJECT_CLASS (klass);
 
159
        GdmOptionWidgetClass *option_widget_class = GDM_OPTION_WIDGET_CLASS (klass);
 
160
 
 
161
        object_class->finalize = gdm_language_option_widget_finalize;
 
162
 
 
163
        option_widget_class->activated = gdm_language_option_widget_activated;
 
164
 
 
165
        signals[LANGUAGE_ACTIVATED] = g_signal_new ("language-activated",
 
166
                                                     G_TYPE_FROM_CLASS (object_class),
 
167
                                                     G_SIGNAL_RUN_FIRST,
 
168
                                                     G_STRUCT_OFFSET (GdmLanguageOptionWidgetClass, language_activated),
 
169
                                                     NULL,
 
170
                                                     NULL,
 
171
                                                     g_cclosure_marshal_VOID__VOID,
 
172
                                                     G_TYPE_NONE,
 
173
                                                     0);
 
174
 
 
175
        signals[DIALOG_HIDDEN] = g_signal_new ("dialog-hidden",
 
176
                                               G_TYPE_FROM_CLASS (object_class),
 
177
                                               G_SIGNAL_RUN_FIRST,
 
178
                                               G_STRUCT_OFFSET (GdmLanguageOptionWidgetClass, dialog_hidden),
 
179
                                               NULL,
 
180
                                               NULL,
 
181
                                               g_cclosure_marshal_VOID__VOID,
 
182
                                               G_TYPE_NONE,
 
183
                                               0);
 
184
 
 
185
        g_type_class_add_private (klass, sizeof (GdmLanguageOptionWidgetPrivate));
 
186
}
 
187
 
 
188
static char *
 
189
gdm_language_option_widget_lookup_item (GdmRecentOptionWidget *widget,
 
190
                                        const char            *locale,
 
191
                                        char                 **name,
 
192
                                        char                 **comment)
 
193
{
 
194
        char *language;
 
195
        char *readable_language;
 
196
        char *lang_tag;
 
197
        char *normalized_locale;
 
198
 
 
199
        normalized_locale = gdm_normalize_language_name (locale);
 
200
 
 
201
        language = gdm_get_language_from_name (locale, normalized_locale);
 
202
 
 
203
        if (language == NULL) {
 
204
                g_free (normalized_locale);
 
205
                return NULL;
 
206
        }
 
207
 
 
208
        readable_language = gdm_get_language_from_name (locale, NULL);
 
209
        gdm_parse_language_name (locale, &lang_tag, NULL, NULL, NULL);
 
210
        *name = g_strdup_printf ("<span lang=\"%s\">%s</span>", lang_tag, language);
 
211
        *comment = readable_language;
 
212
 
 
213
        g_free (language);
 
214
        g_free (lang_tag);
 
215
 
 
216
        return normalized_locale;
 
217
}
 
218
 
 
219
static void
 
220
gdm_language_option_widget_init (GdmLanguageOptionWidget *widget)
 
221
{
 
222
        GError *error;
 
223
 
 
224
        widget->priv = GDM_LANGUAGE_OPTION_WIDGET_GET_PRIVATE (widget);
 
225
 
 
226
        error = NULL;
 
227
        gdm_recent_option_widget_set_gconf_key (GDM_RECENT_OPTION_WIDGET (widget),
 
228
                                                "/apps/gdm/simple-greeter/recent-languages",
 
229
                                                gdm_language_option_widget_lookup_item,
 
230
                                                &error);
 
231
 
 
232
        if (error != NULL) {
 
233
                g_warning ("Could not read recent languages from gconf: %s",
 
234
                           error->message);
 
235
                g_error_free (error);
 
236
        }
 
237
 
 
238
        gdm_option_widget_add_item (GDM_OPTION_WIDGET (widget),
 
239
                                    "__other",
 
240
                                    /* translators: This brings up a dialog
 
241
                                     * with a list of languages to choose from
 
242
                                     */
 
243
                                    C_("language", "Other..."),
 
244
                                    _("Choose a language from the "
 
245
                                      "full list of available languages."),
 
246
                                    GDM_OPTION_WIDGET_POSITION_BOTTOM);
 
247
}
 
248
 
 
249
static void
 
250
gdm_language_option_widget_finalize (GObject *object)
 
251
{
 
252
        GdmLanguageOptionWidget *language_option_widget;
 
253
 
 
254
        g_return_if_fail (object != NULL);
 
255
        g_return_if_fail (GDM_IS_LANGUAGE_OPTION_WIDGET (object));
 
256
 
 
257
        language_option_widget = GDM_LANGUAGE_OPTION_WIDGET (object);
 
258
 
 
259
        g_return_if_fail (language_option_widget->priv != NULL);
 
260
 
 
261
        if (language_option_widget->priv->dialog != NULL) {
 
262
                gtk_widget_destroy (language_option_widget->priv->dialog);
 
263
        }
 
264
 
 
265
        G_OBJECT_CLASS (gdm_language_option_widget_parent_class)->finalize (object);
 
266
}
 
267
 
 
268
GtkWidget *
 
269
gdm_language_option_widget_new (void)
 
270
{
 
271
        GObject *object;
 
272
 
 
273
        object = g_object_new (GDM_TYPE_LANGUAGE_OPTION_WIDGET,
 
274
                               "label-text", _("_Language:"),
 
275
                               "icon-name", "preferences-desktop-locale",
 
276
                               "max-item-count", 8,
 
277
                               NULL);
 
278
 
 
279
        return GTK_WIDGET (object);
 
280
}
 
281
 
 
282
char *
 
283
gdm_language_option_widget_get_current_language_name (GdmLanguageOptionWidget *widget)
 
284
{
 
285
        char *active_item_id;
 
286
 
 
287
        active_item_id = gdm_option_widget_get_active_item (GDM_OPTION_WIDGET (widget));
 
288
        if (active_item_id == NULL) {
 
289
                return NULL;
 
290
        }
 
291
 
 
292
        if (strcmp (active_item_id, "__other") == 0) {
 
293
                g_free (active_item_id);
 
294
                return NULL;
 
295
        }
 
296
 
 
297
        return active_item_id;
 
298
}
 
299
 
 
300
void
 
301
gdm_language_option_widget_set_current_language_name (GdmLanguageOptionWidget *widget,
 
302
                                                      const char              *language_name)
 
303
{
 
304
        char *normalized_language_name;
 
305
 
 
306
        g_return_if_fail (GDM_IS_LANGUAGE_OPTION_WIDGET (widget));
 
307
 
 
308
        if (language_name != NULL) {
 
309
                normalized_language_name = gdm_normalize_language_name (language_name);
 
310
        } else {
 
311
                normalized_language_name = NULL;
 
312
        }
 
313
 
 
314
        if (normalized_language_name != NULL &&
 
315
            !gdm_option_widget_lookup_item (GDM_OPTION_WIDGET (widget),
 
316
                                            normalized_language_name, NULL, NULL, NULL)) {
 
317
                gdm_recent_option_widget_add_item (GDM_RECENT_OPTION_WIDGET (widget),
 
318
                                                   normalized_language_name);
 
319
        }
 
320
 
 
321
        gdm_option_widget_set_active_item (GDM_OPTION_WIDGET (widget), normalized_language_name);
 
322
        g_free (normalized_language_name);
 
323
}