Fixes: NB#61843
[modest] / src / maemo / modest-maemo-global-settings-dialog.c
1 /* Copyright (c) 2006, Nokia Corporation
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are
6  * met:
7  *
8  * * Redistributions of source code must retain the above copyright
9  *   notice, this list of conditions and the following disclaimer.
10  * * Redistributions in binary form must reproduce the above copyright
11  *   notice, this list of conditions and the following disclaimer in the
12  *   documentation and/or other materials provided with the distribution.
13  * * Neither the name of the Nokia Corporation nor the names of its
14  *   contributors may be used to endorse or promote products derived from
15  *   this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29
30 #ifdef HAVE_CONFIG_H
31 #include <config.h>
32 #endif /*HAVE_CONFIG_H*/
33
34 #ifdef MODEST_HAVE_HILDON0_WIDGETS
35 #include <hildon-widgets/hildon-caption.h>
36 #include <hildon-widgets/hildon-number-editor.h>
37 #include <hildon-widgets/hildon-banner.h>
38 #else
39 #include <hildon/hildon-caption.h>
40 #include <hildon/hildon-number-editor.h>
41 #include <hildon/hildon-banner.h>
42 #endif /*MODEST_HAVE_HILDON0_WIDGETS*/
43
44 #include <glib/gi18n.h>
45 #include <string.h>
46 #include <gtk/gtkbox.h>
47 #include <gtk/gtkvbox.h>
48 #include <gtk/gtknotebook.h>
49 #include <gtk/gtklabel.h>
50 #include <gtk/gtkcheckbutton.h>
51 #include <gtk/gtkhseparator.h>
52 #include "modest-runtime.h"
53 #include "widgets/modest-global-settings-dialog-priv.h"
54 #include "widgets/modest-combo-box.h"
55 #include "maemo/modest-maemo-global-settings-dialog.h"
56 #include "widgets/modest-ui-constants.h"
57 #include <tny-account-store.h>
58 #include <tny-maemo-conic-device.h>
59
60 #define MSG_SIZE_MAX_VAL 5000
61 #define MSG_SIZE_DEF_VAL 1000
62 #define MSG_SIZE_MIN_VAL 1
63
64 #define DEFAULT_FOCUS_WIDGET "default-focus-widget"
65
66 /* 'private'/'protected' functions */
67 static void modest_maemo_global_settings_dialog_class_init (ModestMaemoGlobalSettingsDialogClass *klass);
68 static void modest_maemo_global_settings_dialog_init       (ModestMaemoGlobalSettingsDialog *obj);
69 static void modest_maemo_global_settings_dialog_finalize   (GObject *obj);
70
71 static ModestConnectedVia current_connection (void);
72
73 /* list my signals  */
74 enum {
75         /* MY_SIGNAL_1, */
76         /* MY_SIGNAL_2, */
77         LAST_SIGNAL
78 };
79
80 static GtkWidget* create_updating_page   (ModestMaemoGlobalSettingsDialog *self);
81 static GtkWidget* create_composing_page  (ModestMaemoGlobalSettingsDialog *self);
82
83 static gboolean   on_range_error         (HildonNumberEditor *editor, 
84                                           HildonNumberEditorErrorType type,
85                                           gpointer user_data);
86
87 static void       on_auto_update_toggled (GtkToggleButton *togglebutton,
88                                           gpointer user_data);
89
90 static gboolean   on_inner_tabs_key_pressed (GtkWidget *widget,
91                                              GdkEventKey *event,
92                                              gpointer user_data);
93
94 typedef struct _ModestMaemoGlobalSettingsDialogPrivate ModestMaemoGlobalSettingsDialogPrivate;
95 struct _ModestMaemoGlobalSettingsDialogPrivate {
96         ModestPairList *connect_via_list;
97         gint switch_handler;
98 };
99 #define MODEST_MAEMO_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
100                                                            MODEST_TYPE_MAEMO_GLOBAL_SETTINGS_DIALOG, \
101                                                            ModestMaemoGlobalSettingsDialogPrivate))
102 /* globals */
103 static GtkDialogClass *parent_class = NULL;
104
105 /* uncomment the following if you have defined any signals */
106 /* static guint signals[LAST_SIGNAL] = {0}; */
107
108 GType
109 modest_maemo_global_settings_dialog_get_type (void)
110 {
111         static GType my_type = 0;
112         if (!my_type) {
113                 static const GTypeInfo my_info = {
114                         sizeof(ModestMaemoGlobalSettingsDialogClass),
115                         NULL,           /* base init */
116                         NULL,           /* base finalize */
117                         (GClassInitFunc) modest_maemo_global_settings_dialog_class_init,
118                         NULL,           /* class finalize */
119                         NULL,           /* class data */
120                         sizeof(ModestMaemoGlobalSettingsDialog),
121                         1,              /* n_preallocs */
122                         (GInstanceInitFunc) modest_maemo_global_settings_dialog_init,
123                         NULL
124                 };
125                 my_type = g_type_register_static (MODEST_TYPE_GLOBAL_SETTINGS_DIALOG,
126                                                   "ModestMaemoGlobalSettingsDialog",
127                                                   &my_info, 0);
128         }
129         return my_type;
130 }
131
132 static void
133 modest_maemo_global_settings_dialog_class_init (ModestMaemoGlobalSettingsDialogClass *klass)
134 {
135         GObjectClass *gobject_class;
136         gobject_class = (GObjectClass*) klass;
137
138         parent_class            = g_type_class_peek_parent (klass);
139         gobject_class->finalize = modest_maemo_global_settings_dialog_finalize;
140
141         g_type_class_add_private (gobject_class, sizeof(ModestMaemoGlobalSettingsDialogPrivate));
142
143         MODEST_GLOBAL_SETTINGS_DIALOG_CLASS (klass)->current_connection_func = current_connection;
144 }
145
146 typedef struct {
147         ModestMaemoGlobalSettingsDialog *dia;
148         GtkWidget *focus_widget;
149 } SwitchPageHelper;
150
151 static gboolean
152 idle_select_default_focus (gpointer data) 
153 {
154         ModestGlobalSettingsDialogPrivate *ppriv;
155         ModestMaemoGlobalSettingsDialogPrivate *priv;
156         SwitchPageHelper *helper;
157
158         helper = (SwitchPageHelper *) data;
159         priv  = MODEST_MAEMO_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (helper->dia);
160         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (helper->dia);
161
162         /* Grab focus, we need to block in order to prevent a
163            recursive call to this callback */
164         g_signal_handler_block (G_OBJECT (ppriv->notebook), priv->switch_handler);
165         gtk_widget_grab_focus (helper->focus_widget);
166         g_signal_handler_unblock (G_OBJECT (ppriv->notebook), priv->switch_handler);
167
168         g_free (helper);
169
170         return FALSE;
171 }
172
173
174 static void
175 on_switch_page (GtkNotebook *notebook, GtkNotebookPage *page, guint page_num, gpointer user_data)
176 {
177         /* grab the focus to the default element in the current page */
178         GtkWidget *selected_page = NULL, *focus_item = NULL;
179         ModestGlobalSettingsDialogPrivate *ppriv;
180         ModestMaemoGlobalSettingsDialogPrivate *priv;
181         SwitchPageHelper *helper;
182
183         priv  = MODEST_MAEMO_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (user_data);
184         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (user_data);
185
186         selected_page = gtk_notebook_get_nth_page (notebook, page_num);
187         focus_item = GTK_WIDGET(g_object_get_data (G_OBJECT(selected_page), DEFAULT_FOCUS_WIDGET));
188         if (!focus_item) {
189                 g_printerr ("modest: cannot get focus item\n");
190                 return;
191         }
192
193         /* Create the helper */
194         helper = g_malloc0 (sizeof (SwitchPageHelper));
195         helper->dia = MODEST_MAEMO_GLOBAL_SETTINGS_DIALOG (user_data);
196         helper->focus_widget = focus_item;
197
198         /* Focus the widget in an idle. We need to do this in an idle,
199            because this handler is executed *before* the page was
200            really switched, so the focus is not placed in the right
201            widget */
202         g_idle_add (idle_select_default_focus, helper);
203 }
204
205
206 static void
207 modest_maemo_global_settings_dialog_init (ModestMaemoGlobalSettingsDialog *self)
208 {
209         ModestMaemoGlobalSettingsDialogPrivate *priv;
210         ModestGlobalSettingsDialogPrivate *ppriv;
211
212         priv  = MODEST_MAEMO_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (self);
213         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (self);
214
215         ppriv->updating_page = create_updating_page (self);
216         ppriv->composing_page = create_composing_page (self);
217     
218         /* Set the default focusable widgets */
219         g_object_set_data (G_OBJECT(ppriv->updating_page), DEFAULT_FOCUS_WIDGET,
220                            (gpointer)ppriv->auto_update);
221         g_object_set_data (G_OBJECT(ppriv->composing_page), DEFAULT_FOCUS_WIDGET,
222                            (gpointer)ppriv->msg_format);
223
224         /* Add the notebook pages: */
225         gtk_notebook_append_page (GTK_NOTEBOOK (ppriv->notebook), ppriv->updating_page, 
226                                   gtk_label_new (_("mcen_ti_options_updating")));
227         gtk_notebook_append_page (GTK_NOTEBOOK (ppriv->notebook), ppriv->composing_page, 
228                                   gtk_label_new (_("mcen_ti_options_composing")));
229                 
230         gtk_container_add (GTK_CONTAINER (GTK_DIALOG (self)->vbox), ppriv->notebook);
231         gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (self)->vbox), MODEST_MARGIN_HALF);
232
233         g_signal_connect (G_OBJECT (self), "key-press-event",
234                           G_CALLBACK (on_inner_tabs_key_pressed), self);
235         priv->switch_handler = g_signal_connect (G_OBJECT(ppriv->notebook), "switch-page",
236                                                  G_CALLBACK(on_switch_page), self);
237
238         /* Load current config */
239         _modest_global_settings_dialog_load_conf (MODEST_GLOBAL_SETTINGS_DIALOG (self));
240
241         /* Set first page */
242         gtk_notebook_set_current_page (GTK_NOTEBOOK (ppriv->notebook), 0);
243 }
244
245 static void
246 modest_maemo_global_settings_dialog_finalize (GObject *obj)
247 {
248         ModestGlobalSettingsDialogPrivate *ppriv;
249         ModestMaemoGlobalSettingsDialogPrivate *priv;
250
251         priv = MODEST_MAEMO_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (obj);
252         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (obj);
253
254         if (priv->switch_handler) {
255                 g_signal_handler_disconnect (G_OBJECT (ppriv->notebook), priv->switch_handler);
256                 priv->switch_handler = 0;
257         }
258
259 /*      free/unref instance resources here */
260         G_OBJECT_CLASS(parent_class)->finalize (obj);
261 }
262
263 GtkWidget*
264 modest_maemo_global_settings_dialog_new (void)
265 {
266         return GTK_WIDGET(g_object_new(MODEST_TYPE_MAEMO_GLOBAL_SETTINGS_DIALOG, NULL));
267 }
268
269
270 /*
271  * Creates the updating page
272  */
273 static GtkWidget*
274 create_updating_page (ModestMaemoGlobalSettingsDialog *self)
275 {
276         GtkWidget *vbox, *vbox_update, *vbox_limit, *caption;
277         GtkSizeGroup *size_group;
278         ModestGlobalSettingsDialogPrivate *ppriv;
279
280         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (self);
281
282         vbox = gtk_vbox_new (FALSE, MODEST_MARGIN_DEFAULT);
283
284         vbox_update = gtk_vbox_new (FALSE, MODEST_MARGIN_DEFAULT);
285         size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
286
287         /* Auto update */
288         ppriv->auto_update = gtk_check_button_new ();
289         caption = hildon_caption_new (size_group, 
290                                       _("mcen_fi_options_autoupdate"), 
291                                       ppriv->auto_update, 
292                                       NULL, 
293                                       HILDON_CAPTION_MANDATORY);
294         gtk_box_pack_start (GTK_BOX (vbox_update), caption, FALSE, FALSE, MODEST_MARGIN_HALF);
295         g_signal_connect (ppriv->auto_update, "toggled", G_CALLBACK (on_auto_update_toggled), self);
296
297         /* Connected via */
298
299         /* Note: This ModestPairList* must exist for as long as the combo
300          * that uses it, because the ModestComboBox uses the ID opaquely, 
301          * so it can't know how to manage its memory. */ 
302         ppriv->connect_via_list = _modest_global_settings_dialog_get_connected_via ();
303         ppriv->connect_via = modest_combo_box_new (ppriv->connect_via_list, g_int_equal);
304
305         caption = hildon_caption_new (size_group, 
306                                       _("mcen_fi_options_connectiontype"),
307                                       ppriv->connect_via, 
308                                       NULL, 
309                                       HILDON_CAPTION_MANDATORY);
310         gtk_box_pack_start (GTK_BOX (vbox_update), caption, FALSE, FALSE, MODEST_MARGIN_HALF);
311
312         /* Update interval */
313
314         /* Note: This ModestPairList* must exist for as long as the combo
315          * that uses it, because the ModestComboBox uses the ID opaquely, 
316          * so it can't know how to manage its memory. */ 
317         ppriv->update_interval_list = _modest_global_settings_dialog_get_update_interval ();
318         ppriv->update_interval = modest_combo_box_new (ppriv->update_interval_list, g_int_equal);
319
320         caption = hildon_caption_new (size_group, 
321                                       _("mcen_fi_options_updateinterval"),
322                                       ppriv->update_interval, 
323                                       NULL, 
324                                       HILDON_CAPTION_MANDATORY);
325         gtk_box_pack_start (GTK_BOX (vbox_update), caption, FALSE, FALSE, MODEST_MARGIN_HALF);
326
327         /* Add to vbox */
328         gtk_box_pack_start (GTK_BOX (vbox), vbox_update, FALSE, FALSE, MODEST_MARGIN_HALF);
329
330         /* Separator */
331         gtk_box_pack_start (GTK_BOX (vbox), gtk_hseparator_new (), FALSE, FALSE, MODEST_MARGIN_HALF);
332
333         /* Limits */
334         vbox_limit = gtk_vbox_new (FALSE, MODEST_MARGIN_DEFAULT);
335         size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
336
337         /* Size limit */
338         ppriv->size_limit = hildon_number_editor_new (MSG_SIZE_MIN_VAL, MSG_SIZE_MAX_VAL);
339         hildon_number_editor_set_value (HILDON_NUMBER_EDITOR (ppriv->size_limit), MSG_SIZE_DEF_VAL);
340         g_signal_connect (ppriv->size_limit, "range_error", G_CALLBACK (on_range_error), self);
341         caption = hildon_caption_new (size_group, 
342                                       _("mcen_fi_advsetup_sizelimit"), 
343                                       ppriv->size_limit, 
344                                       NULL, 
345                                       HILDON_CAPTION_MANDATORY);
346         gtk_box_pack_start (GTK_BOX (vbox_limit), caption, FALSE, FALSE, MODEST_MARGIN_HALF);
347
348         /* Play sound */
349         ppriv->play_sound = gtk_check_button_new ();
350         caption = hildon_caption_new (size_group, 
351                                       _("mcen_fi_options_playsound"), 
352                                       ppriv->play_sound, 
353                                       NULL, 
354                                       HILDON_CAPTION_MANDATORY);
355         gtk_box_pack_start (GTK_BOX (vbox_limit), caption, FALSE, FALSE, MODEST_MARGIN_HALF);
356
357         /* Add to vbox */
358         gtk_box_pack_start (GTK_BOX (vbox), vbox_limit, FALSE, FALSE, MODEST_MARGIN_HALF);
359         
360         return vbox;
361 }
362
363 /*
364  * Creates the composing page
365  */
366 static GtkWidget* 
367 create_composing_page (ModestMaemoGlobalSettingsDialog *self)
368 {
369         GtkWidget *vbox;
370         GtkSizeGroup *size_group;
371         ModestGlobalSettingsDialogPrivate *ppriv;
372         GtkWidget *caption;
373
374         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (self);
375         size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
376         vbox = gtk_vbox_new (FALSE, MODEST_MARGIN_DEFAULT);
377
378         /* Update interval */
379
380         /* Note: This ModestPairList* must exist for as long as the combo
381          * that uses it, because the ModestComboBox uses the ID opaquely, 
382          * so it can't know how to manage its memory. */ 
383         ppriv->msg_format_list = _modest_global_settings_dialog_get_msg_formats ();
384         ppriv->msg_format = modest_combo_box_new (ppriv->msg_format_list, g_int_equal);
385
386         caption = hildon_caption_new (size_group, 
387                                       _("mcen_fi_options_messageformat"),
388                                       ppriv->msg_format, 
389                                       NULL, 
390                                       HILDON_CAPTION_MANDATORY);
391         gtk_box_pack_start (GTK_BOX (vbox), caption, FALSE, FALSE, MODEST_MARGIN_HALF);
392
393         /* Reply */
394         ppriv->include_reply = gtk_check_button_new ();
395         caption = hildon_caption_new (size_group, 
396                                       _("mcen_va_options_include_original_inreply"), 
397                                       ppriv->include_reply, 
398                                       NULL, 
399                                       HILDON_CAPTION_MANDATORY);
400         gtk_box_pack_start (GTK_BOX (vbox), caption, FALSE, FALSE, MODEST_MARGIN_HALF);
401
402         return vbox;
403 }
404
405 static void
406 on_auto_update_toggled (GtkToggleButton *togglebutton,
407                         gpointer user_data)
408 {
409         ModestGlobalSettingsDialogPrivate *ppriv;
410         GtkWidget *caption1, *caption2;
411
412         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (user_data);
413         caption1 = gtk_widget_get_ancestor (ppriv->connect_via, HILDON_TYPE_CAPTION);
414         caption2 = gtk_widget_get_ancestor (ppriv->update_interval, HILDON_TYPE_CAPTION);
415
416         if (gtk_toggle_button_get_active (togglebutton)) {
417                 gtk_widget_set_sensitive (caption1, TRUE);
418                 gtk_widget_set_sensitive (caption2, TRUE);
419         } else {
420                 gtk_widget_set_sensitive (caption1, FALSE);
421                 gtk_widget_set_sensitive (caption2, FALSE);
422         }
423 }
424
425 static gboolean
426 on_range_error (HildonNumberEditor *editor, 
427                 HildonNumberEditorErrorType type,
428                 gpointer user_data)
429 {
430         gchar *msg;
431         gint new_val;
432
433         switch (type) {
434 #ifdef MODEST_HAVE_HILDON0_WIDGETS
435         case MAXIMUM_VALUE_EXCEED:
436 #else
437         case HILDON_NUMBER_EDITOR_ERROR_MAXIMUM_VALUE_EXCEED:
438 #endif
439                 msg = g_strdup_printf (_("ckct_ib_maximum_value"), MSG_SIZE_MAX_VAL);
440                 new_val = MSG_SIZE_MAX_VAL;
441                 break;
442 #ifdef MODEST_HAVE_HILDON0_WIDGETS
443         case MINIMUM_VALUE_EXCEED:
444 #else
445         case HILDON_NUMBER_EDITOR_ERROR_MINIMUM_VALUE_EXCEED:
446 #endif
447                 msg = g_strdup_printf (_("ckct_ib_minimum_value"), MSG_SIZE_MIN_VAL);
448                 new_val = MSG_SIZE_MIN_VAL;
449                 break;
450 #ifdef MODEST_HAVE_HILDON0_WIDGETS
451         case ERRONEOUS_VALUE:
452 #else
453         case HILDON_NUMBER_EDITOR_ERROR_ERRONEOUS_VALUE:
454 #endif
455                 msg = g_strdup_printf (_("ckct_ib_set_a_value_within_range"), 
456                                        MSG_SIZE_MIN_VAL, 
457                                        MSG_SIZE_MAX_VAL);
458                 /* FIXME: use the previous */
459                 new_val = MSG_SIZE_DEF_VAL;
460                 break;
461         default:
462                 g_return_val_if_reached (FALSE);
463         }
464
465         /* Restore value */
466         hildon_number_editor_set_value (editor, new_val);
467
468         /* Show error */
469         hildon_banner_show_information (GTK_WIDGET (user_data), NULL, msg);
470
471         /* Free */
472         g_free (msg);
473
474         return TRUE;
475 }
476
477 static ModestConnectedVia
478 current_connection (void)
479 {
480         TnyAccountStore *account_store;
481         TnyDevice *device;
482         ModestConnectedVia retval = MODEST_CONNECTED_VIA_ANY;
483         
484         account_store = TNY_ACCOUNT_STORE (modest_runtime_get_account_store ());
485         device = tny_account_store_get_device (account_store);
486
487         if (!tny_device_is_online (device))
488                 return MODEST_CONNECTED_VIA_ANY;
489
490         /* Get iap id */
491         const gchar *iap_id = tny_maemo_conic_device_get_current_iap_id (TNY_MAEMO_CONIC_DEVICE (device));
492         if (iap_id) {
493                 ConIcIap *iap = tny_maemo_conic_device_get_iap (
494                         TNY_MAEMO_CONIC_DEVICE (device), iap_id);
495                 const gchar *bearer_type = con_ic_iap_get_bearer_type (iap);
496                         
497                 if (!strcmp (bearer_type, CON_IC_BEARER_WLAN_INFRA) ||
498                     !strcmp (bearer_type, CON_IC_BEARER_WLAN_ADHOC))
499                         retval = MODEST_CONNECTED_VIA_WLAN;
500                 else
501                         retval = MODEST_CONNECTED_VIA_ANY;
502         
503                 g_object_unref (iap);
504         }
505         g_object_unref (device);
506
507         return retval;
508 }
509
510 static gboolean
511 on_inner_tabs_key_pressed (GtkWidget *widget,
512                            GdkEventKey *event,
513                            gpointer user_data)
514 {
515         ModestGlobalSettingsDialogPrivate *ppriv;
516         gboolean retval = FALSE;
517
518         ppriv = MODEST_GLOBAL_SETTINGS_DIALOG_GET_PRIVATE (user_data);
519
520         if (widget == user_data) {
521                 if (event->keyval == GDK_Right) {
522                         gtk_notebook_next_page (GTK_NOTEBOOK (ppriv->notebook));
523                         retval = TRUE;
524                 } else if (event->keyval == GDK_Left) {
525                         gtk_notebook_prev_page (GTK_NOTEBOOK (ppriv->notebook));
526                         retval = TRUE;
527                 }
528         }
529
530         return retval;
531 }