git.maemo.org Git - modest/blob - src/widgets/modest-wizard-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 /**
  31  * SECTION:modest-wizard-dialog
  32  * @short_description: A widget to create a guided installation
  33  * process wizard
  34  *
  35  * #ModestWizardDialog is a widget to create a guided installation
  36  * process. The dialog has four standard buttons, previous, next,
  37  * finish, cancel, and contains several pages with optional icons.
  38  * Response buttons are dimmed/undimmed automatically and the standard
  39  * icon is shown/hidden in response to page navigation. The notebook
  40  * widget provided by users contains the actual wizard pages.
  41  */
  42
  43 #include <config.h>
  44 #include <gtk/gtkdialog.h>
  45 #include <gtk/gtknotebook.h>
  46 #include <gtk/gtkimage.h>
  47 #include <gtk/gtkbox.h>
  48 #include <gtk/gtkhbox.h>
  49 #include <gtk/gtkvbox.h>
  50 #include <gtk/gtkbutton.h>
  51 #include <gtk/gtk.h>
  52
  53 #ifdef HAVE_CONFIG_H
  54 #include <config.h>
  55 #endif
  56
  57 #ifndef MODEST_TOOLKIT_GTK
  58 #if MODEST_HILDON_API == 0
  59 #include <hildon-widgets/hildon-defines.h>
  60 #else
  61 #include <hildon/hildon-defines.h>
  62 #endif /*MODEST_HILDON_API == 0*/
  63 #endif /*!MODEST_TOOLKIT_GTK*/
  64
  65 #include "modest-wizard-dialog.h"
  66 #include "modest-debug.h"
  67 #include "modest-text-utils.h"
  68
  69 static GtkDialogClass *parent_class;
  70
  71 static void class_init              (ModestWizardDialogClass   *wizard_dialog_class);
  72
  73 static void init                    (ModestWizardDialog        *wizard_dialog);
  74
  75 static void create_title            (ModestWizardDialog        *wizard_dialog);
  76
  77 static void set_property            (GObject                   *object,
  78                                      guint                     property_id,
  79                                      const GValue              *value,
  80                                      GParamSpec                *pspec);
  81
  82 static void get_property            (GObject                   *object,
  83                                      guint                     property_id,
  84                                      GValue                    *value,
  85                                      GParamSpec                *pspec);
  86
  87 static void finalize                (GObject                   *object);
  88
  89 static void response                (ModestWizardDialog        *wizard,
  90                                      gint                      response_id,
  91                                      gpointer                  unused);
  92
  93 static void make_buttons_sensitive  (ModestWizardDialog *wizard_dialog,
  94                                      gboolean           previous,
  95                                      gboolean           finish,
  96                                      gboolean next);
  97
  98 static gboolean invoke_before_next_vfunc (ModestWizardDialog *wizard_dialog);
  99 static void invoke_enable_buttons_vfunc (ModestWizardDialog *wizard_dialog);
 100
 101 enum {
 102     PROP_ZERO,
 103     PROP_WIZARD_NAME,
 104     PROP_WIZARD_NOTEBOOK,
 105     PROP_WIZARD_AUTOTITLE
 106 };
 107
 108 struct _ModestWizardDialogPrivate {
 109     gchar       *wizard_name;
 110     GtkNotebook *notebook;
 111     GtkBox      *box;
 112     GtkWidget   *image;
 113     gboolean    autotitle;
 114 };
 115
 116
 117 GType
 118 modest_wizard_dialog_get_type (void)
 119 {
 120     static GType wizard_dialog_type = 0;
 121
 122     if (!wizard_dialog_type) {
 123
 124         static const GTypeInfo wizard_dialog_info = {
 125             sizeof (ModestWizardDialogClass),
 126             NULL,       /* base_init      */
 127             NULL,       /* base_finalize  */
 128             (GClassInitFunc) class_init,
 129             NULL,       /* class_finalize */
 130             NULL,       /* class_data     */
 131             sizeof (ModestWizardDialog),
 132             0,          /* n_preallocs    */
 133             (GInstanceInitFunc) init,
 134         };
 135
 136         wizard_dialog_type = g_type_register_static (GTK_TYPE_DIALOG,
 137                                                      "ModestWizardDialog",
 138                                                      &wizard_dialog_info,
 139                                                      0);
 140     }
 141
 142     return wizard_dialog_type;
 143 }
 144
 145 static void
 146 class_init (ModestWizardDialogClass *wizard_dialog_class)
 147 {
 148     GObjectClass *object_class = G_OBJECT_CLASS (wizard_dialog_class);
 149
 150     parent_class = g_type_class_peek_parent (wizard_dialog_class);
 151
 152     g_type_class_add_private (wizard_dialog_class,
 153                               sizeof(ModestWizardDialogPrivate));
 154
 155     /* Override virtual methods */
 156     object_class->set_property = set_property;
 157     object_class->get_property = get_property;
 158     object_class->finalize     = finalize;
 159
 160     /**
 161      * ModestWizardDialog:wizard-name:
 162      *
 163      * The name of the wizard.
 164      */
 165     g_object_class_install_property (object_class, PROP_WIZARD_NAME,
 166             g_param_spec_string
 167             ("wizard-name",
 168              "Wizard Name",
 169              "The name of the ModestWizardDialog",
 170              NULL,
 171              G_PARAM_READWRITE));
 172
 173     /**
 174      * ModestWizardDialog:wizard-notebook:
 175      *
 176      * The notebook object, which is used by the ModestWizardDialog.
 177      */
 178     g_object_class_install_property(object_class, PROP_WIZARD_NOTEBOOK,
 179             g_param_spec_object
 180             ("wizard-notebook",
 181              "Wizard Notebook",
 182              "GtkNotebook object to be used in the "
 183              "ModestWizardDialog",
 184              GTK_TYPE_NOTEBOOK, G_PARAM_READWRITE));
 185
 186     /**
 187      * ModestWizardDialog:autotitle
 188      *
 189      * If the wizard should automatically try to change the window title when changing steps.
 190      * Set to FALSE if you'd like to override the default behaviour.
 191      *
 192      * Since: 0.14.5
 193      */
 194     g_object_class_install_property(object_class, PROP_WIZARD_AUTOTITLE,
 195             g_param_spec_boolean
 196             ("autotitle",
 197              "AutoTitle",
 198              "If the wizard should autotitle itself",
 199              TRUE,
 200              G_PARAM_READWRITE));
 201 }
 202
 203 static void
 204 finalize (GObject *object)
 205 {
 206     ModestWizardDialog *dialog = MODEST_WIZARD_DIALOG (object);
 207     g_return_if_fail (dialog != NULL);
 208
 209     if (dialog->priv->wizard_name != NULL)
 210         g_free (MODEST_WIZARD_DIALOG (object)->priv->wizard_name);
 211
 212     if (G_OBJECT_CLASS (parent_class)->finalize)
 213         G_OBJECT_CLASS (parent_class)->finalize(object);
 214 }
 215
 216 /* Disable or enable the Previous, Next and Finish buttons */
 217 static void
 218 make_buttons_sensitive (ModestWizardDialog *wizard_dialog,
 219                         gboolean previous,
 220                         gboolean finish,
 221                         gboolean next)
 222 {
 223     gtk_dialog_set_response_sensitive (GTK_DIALOG (wizard_dialog),
 224                                        MODEST_WIZARD_DIALOG_PREVIOUS,
 225                                        previous);
 226
 227     gtk_dialog_set_response_sensitive (GTK_DIALOG (wizard_dialog),
 228                                        MODEST_WIZARD_DIALOG_FINISH,
 229                                        finish);
 230
 231     gtk_dialog_set_response_sensitive (GTK_DIALOG (wizard_dialog),
 232                                        MODEST_WIZARD_DIALOG_NEXT,
 233                                        next);
 234 }
 235
 236 static void
 237 init (ModestWizardDialog *wizard_dialog)
 238 {
 239     /* Initialize private structure for faster member access */
 240     ModestWizardDialogPrivate *priv =
 241         G_TYPE_INSTANCE_GET_PRIVATE (wizard_dialog,
 242                 MODEST_TYPE_WIZARD_DIALOG,
 243                 ModestWizardDialogPrivate);
 244
 245     GtkDialog *dialog = GTK_DIALOG (wizard_dialog);
 246
 247     /* Init internal widgets */
 248     GtkWidget *vbox = gtk_vbox_new (FALSE, 0);
 249     gtk_dialog_set_has_separator (dialog, FALSE);
 250     wizard_dialog->priv = priv;
 251     priv->box = GTK_BOX (gtk_hbox_new (FALSE, 0));
 252 #ifndef MODEST_TOOLKIT_GTK
 253 #if MODEST_HILDON_API == 0
 254     priv->image = gtk_image_new_from_icon_name ("qgn_widg_wizard",
 255                                                 HILDON_ICON_SIZE_WIDG_WIZARD);
 256 #else
 257     static int icon_size = 0;
 258     if (!icon_size)
 259             icon_size = gtk_icon_size_register("modest_wizard", 50, 50);
 260     priv->image = gtk_image_new_from_icon_name ("qgn_widg_wizard",
 261                                                 icon_size);
 262 #endif /*MODEST_HILDON_API == 0*/
 263 #else /*MODEST_TOOLKIT_GTK*/
 264     priv->image = gtk_image_new_from_stock (GTK_STOCK_PREFERENCES, GTK_ICON_SIZE_DIALOG);
 265 #endif /*!MODEST_TOOLKIT_GTK*/
 266     /* Default values for user provided properties */
 267     priv->notebook = NULL;
 268     priv->wizard_name = NULL;
 269     priv->autotitle = TRUE;
 270
 271     /* Build wizard layout */
 272     gtk_box_pack_start_defaults (GTK_BOX (dialog->vbox), GTK_WIDGET (priv->box));
 273     gtk_box_pack_start_defaults (GTK_BOX (priv->box), GTK_WIDGET (vbox));
 274     gtk_box_pack_start (GTK_BOX (vbox), GTK_WIDGET (priv->image), FALSE, FALSE, 0);
 275
 276     /* Add response buttons: finish, previous, next, cancel */
 277 #ifndef MODEST_TOOLKIT_GTK
 278     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_finish"), MODEST_WIZARD_DIALOG_FINISH);
 279     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_previous"), MODEST_WIZARD_DIALOG_PREVIOUS);
 280     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_next"), MODEST_WIZARD_DIALOG_NEXT);
 281     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_cancel"), MODEST_WIZARD_DIALOG_CANCEL);
 282 #else
 283     gtk_dialog_add_button (dialog, GTK_STOCK_SAVE, MODEST_WIZARD_DIALOG_FINISH);
 284     gtk_dialog_add_button (dialog, GTK_STOCK_GO_BACK, MODEST_WIZARD_DIALOG_PREVIOUS);
 285     gtk_dialog_add_button (dialog, GTK_STOCK_GO_FORWARD, MODEST_WIZARD_DIALOG_NEXT);
 286     gtk_dialog_add_button (dialog, GTK_STOCK_CANCEL, MODEST_WIZARD_DIALOG_CANCEL);
 287 #endif
 288
 289     /* Set initial button states: previous and finish buttons are disabled */
 290     make_buttons_sensitive (wizard_dialog, FALSE, FALSE, TRUE);
 291
 292     /* Show all the internal widgets */
 293     gtk_widget_show_all (GTK_WIDGET (dialog->vbox));
 294
 295     /* connect to dialog's response signal */
 296     g_signal_connect (G_OBJECT (dialog), "response",
 297             G_CALLBACK (response), NULL);
 298 }
 299
 300 #if GTK_CHECK_VERSION(2, 10, 0) /* These signals were added in GTK+ 2.10: */
 301 static void on_notebook_page_added(GtkNotebook *notebook,
 302                                    GtkWidget   *child,
 303                                    guint        page_num,
 304                                    gpointer     user_data)
 305 {
 306         ModestWizardDialog* dialog = NULL;
 307
 308         g_return_if_fail (MODEST_IS_WIZARD_DIALOG(user_data));
 309         dialog = MODEST_WIZARD_DIALOG(user_data);
 310
 311         /* The title should show the total number of pages: */
 312         create_title (dialog);
 313 }
 314
 315 static void on_notebook_page_removed(GtkNotebook *notebook,
 316                                      GtkWidget   *child,
 317                                      guint        page_num,
 318                                      gpointer     user_data)
 319 {
 320         ModestWizardDialog* dialog = NULL;
 321
 322         g_return_if_fail (MODEST_IS_WIZARD_DIALOG(user_data));
 323         dialog = MODEST_WIZARD_DIALOG(user_data);
 324
 325         /* The title should show the total number of pages: */
 326         create_title (dialog);
 327 }
 328 #endif /* GTK_CHECK_VERSION */
 329
 330 static void
 331 connect_to_notebook_signals(ModestWizardDialog* dialog)
 332 {
 333 #if GTK_CHECK_VERSION(2, 10, 0) /* These signals were added in GTK+ 2.10: */
 334         ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(dialog)->priv;
 335         g_return_if_fail (priv->notebook);
 336
 337         /* Connect to the notebook signals,
 338          * so we can update the title when necessary: */
 339         g_signal_connect (G_OBJECT (priv->notebook), "page-added",
 340                       G_CALLBACK (on_notebook_page_added), dialog);
 341         g_signal_connect (G_OBJECT (priv->notebook), "page-removed",
 342                       G_CALLBACK (on_notebook_page_removed), dialog);
 343 #endif /* GTK_CHECK_VERSION */
 344 }
 345
 346
 347 static void
 348 set_property (GObject      *object,
 349               guint        property_id,
 350               const GValue *value,
 351               GParamSpec   *pspec)
 352 {
 353     ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(object)->priv;
 354
 355     switch (property_id) {
 356
 357         case PROP_WIZARD_AUTOTITLE:
 358
 359             priv->autotitle = g_value_get_boolean (value);
 360
 361             if (priv->autotitle &&
 362                 priv->wizard_name &&
 363                 priv->notebook)
 364                 create_title (MODEST_WIZARD_DIALOG (object));
 365             else if (priv->wizard_name)
 366                 gtk_window_set_title (GTK_WINDOW (object), priv->wizard_name);
 367
 368             break;
 369
 370         case PROP_WIZARD_NAME:
 371
 372             /* Set new wizard name. This name will appear in titlebar */
 373             if (priv->wizard_name)
 374                 g_free (priv->wizard_name);
 375
 376             gchar *str = (gchar *) g_value_get_string (value);
 377             g_return_if_fail (str != NULL);
 378
 379             priv->wizard_name = g_strdup (str);
 380
 381             /* We need notebook in order to create title, since page information
 382                is used in title generation */
 383
 384             if (priv->notebook && priv->autotitle)
 385                 create_title (MODEST_WIZARD_DIALOG (object));
 386
 387             break;
 388
 389         case PROP_WIZARD_NOTEBOOK: {
 390
 391             GtkNotebook *book = GTK_NOTEBOOK (g_value_get_object (value));
 392             g_return_if_fail (book != NULL);
 393
 394             priv->notebook = book;
 395
 396             /* Set the default properties for the notebook (disable tabs,
 397              * and remove borders) to make it look like a nice wizard widget */
 398             gtk_notebook_set_show_tabs (priv->notebook, FALSE);
 399             gtk_notebook_set_show_border (priv->notebook, FALSE);
 400             gtk_box_pack_start_defaults (GTK_BOX( priv->box), GTK_WIDGET (priv->notebook));
 401
 402             /* Show the notebook so that a gtk_widget_show on the dialog is
 403              * all that is required to display the dialog correctly */
 404             gtk_widget_show ( GTK_WIDGET (priv->notebook));
 405
 406             /* Update dialog title to reflect current page stats etc */
 407             ModestWizardDialog *wizard_dialog = MODEST_WIZARD_DIALOG (object);
 408             if (priv->wizard_name && priv->autotitle)
 409                 create_title (wizard_dialog);
 410
 411             connect_to_notebook_signals (wizard_dialog);
 412
 413             }break;
 414
 415         default:
 416             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 417             break;
 418     }
 419 }
 420
 421 static void
 422 get_property (GObject      *object,
 423               guint        property_id,
 424               GValue       *value,
 425               GParamSpec   *pspec)
 426 {
 427     ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG (object)->priv;
 428
 429     switch (property_id) {
 430
 431         case PROP_WIZARD_NAME:
 432             g_value_set_string (value, priv->wizard_name);
 433             break;
 434
 435         case PROP_WIZARD_NOTEBOOK:
 436             g_value_set_object (value, priv->notebook);
 437             break;
 438
 439         default:
 440             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 441             break;
 442     }
 443 }
 444
 445 /*
 446  * Creates the title of the dialog taking into account the current
 447  * page of the notebook.
 448  */
 449 static void
 450 create_title (ModestWizardDialog *wizard_dialog)
 451 {
 452     gchar *str = NULL;
 453     ModestWizardDialogPrivate *priv = NULL;
 454     GtkNotebook *notebook = NULL;
 455
 456     g_return_if_fail (MODEST_IS_WIZARD_DIALOG(wizard_dialog));
 457     g_return_if_fail (wizard_dialog->priv != NULL);
 458
 459     priv = wizard_dialog->priv;
 460     notebook = priv->notebook;
 461
 462     if (!notebook)
 463         return;
 464
 465     /* Get page information, we'll need that when creating title */
 466     gint pages = gtk_notebook_get_n_pages (notebook);
 467     if (pages == 0)
 468       return;
 469
 470     gint current = gtk_notebook_get_current_page (priv->notebook);
 471     if (current < 0)
 472         current = 0;
 473
 474     /* the welcome title on the initial page */
 475     /* This is the standard wizard title, with, e.g., 1/4 at the end,
 476          * but the Modest UI spec does not want this. */
 477         /*
 478     if (current == 0) {
 479         str = g_strdup_printf (_HL("ecdg_ti_wizard_welcome"),
 480                 priv->wizard_name, pages);
 481     } else {
 482     */
 483         const gchar *steps = gtk_notebook_get_tab_label_text (notebook,
 484                 gtk_notebook_get_nth_page (notebook, current));
 485
 486                 /* This is the standard wizard title, with, e.g., 1/4 at the end,
 487                  * but the Modest UI spec does not want this.
 488                  */
 489                 /*
 490         str = g_strdup_printf (_HL("ecdg_ti_wizard_step"),
 491                 priv->wizard_name, current + 1, pages, steps);
 492         */
 493
 494         str = g_strdup_printf (_HL("%s: %s"),
 495                 priv->wizard_name, steps);
 496     /* } */
 497
 498     /* Update the dialog to display the generated title */
 499     gtk_window_set_title (GTK_WINDOW (wizard_dialog), str);
 500     g_free (str);
 501 }
 502
 503 /*
 504  * Response signal handler. This function is needed because GtkDialog's
 505  * handler for this signal closes the dialog and we don't want that, we
 506  * want to change pages and, dim certain response buttons. Overriding the
 507  * virtual function would not work because that would be called after the
 508  * signal handler implemented by GtkDialog.
 509  * FIXME: There is a much saner way to do that [MDK]
 510  */
 511 static void
 512 response (ModestWizardDialog   *wizard_dialog,
 513           gint                 response_id,
 514           gpointer             unused)
 515 {
 516     ModestWizardDialogPrivate *priv = wizard_dialog->priv;
 517     GtkNotebook *notebook = priv->notebook;
 518     gint current = 0;
 519     gboolean is_first, is_last;
 520
 521     switch (response_id) {
 522
 523         case MODEST_WIZARD_DIALOG_PREVIOUS:
 524             gtk_notebook_prev_page (notebook); /* go to previous page */
 525             break;
 526
 527         case MODEST_WIZARD_DIALOG_NEXT:
 528                 if (invoke_before_next_vfunc (wizard_dialog))
 529                         gtk_notebook_next_page (notebook); /* go to next page */
 530
 531             break;
 532
 533         case MODEST_WIZARD_DIALOG_CANCEL:
 534                 return;
 535                 break;
 536         case MODEST_WIZARD_DIALOG_FINISH:
 537                 if (invoke_before_next_vfunc (wizard_dialog))
 538                 return;
 539
 540             break;
 541
 542     }
 543
 544     current = gtk_notebook_get_current_page (notebook);
 545     gint last = gtk_notebook_get_n_pages (notebook) - 1;
 546     is_last = current == last;
 547     is_first = current == 0;
 548
 549     /* If first page, previous and finish are disabled,
 550        if last page, next is disabled */
 551     make_buttons_sensitive (wizard_dialog,
 552             !is_first /* previous */, !is_first /* finish */, !is_last /* next*/);
 553
 554     /* Allow derived classes to disable buttons to prevent navigation,
 555      * according to their own validation logic: */
 556     invoke_enable_buttons_vfunc (wizard_dialog);
 557
 558     /* Don't let the dialog close */
 559     g_signal_stop_emission_by_name (wizard_dialog, "response");
 560
 561     /* We show the default image on first and last pages */
 562     last = gtk_notebook_get_n_pages (notebook) - 1;
 563     if (current == last || current == 0)
 564         gtk_widget_show (GTK_WIDGET(priv->image));
 565     else
 566         gtk_widget_hide (GTK_WIDGET(priv->image));
 567
 568     /* New page number may appear in the title, update it */
 569     if (priv->autotitle)
 570         create_title (wizard_dialog);
 571 }
 572
 573 /**
 574  * modest_wizard_dialog_new:
 575  * @parent: a #GtkWindow
 576  * @wizard_name: the name of dialog
 577  * @notebook: the notebook to be shown on the dialog
 578  *
 579  * Creates a new #ModestWizardDialog.
 580  *
 581  * Returns: a new #ModestWizardDialog
 582  */
 583 GtkWidget*
 584 modest_wizard_dialog_new (GtkWindow   *parent,
 585                           const char  *wizard_name,
 586                           GtkNotebook *notebook)
 587 {
 588     GtkWidget *widget;
 589
 590     g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
 591
 592     widget = GTK_WIDGET (g_object_new
 593             (MODEST_TYPE_WIZARD_DIALOG,
 594              "wizard-name", wizard_name,
 595              "wizard-notebook", notebook, NULL));
 596
 597     if (parent)
 598         gtk_window_set_transient_for (GTK_WINDOW (widget), parent);
 599
 600     return widget;
 601 }
 602
 603 /**
 604  * modest_wizard_dialog_force_title_update:
 605  * @wizard_dialog: The wizard dialog
 606  *
 607  * Force the title to be rebuilt, for instance when you have added or
 608  * removed notebook pages. This function is not necessary when using GTK+ 2.10,
 609  * because that has GtkNotebook signals that will be used to update the title
 610  * automatically.
 611  */
 612 void
 613 modest_wizard_dialog_force_title_update (ModestWizardDialog   *wizard_dialog)
 614 {
 615         create_title (wizard_dialog);
 616 }
 617
 618 static gboolean
 619 invoke_before_next_vfunc (ModestWizardDialog *wizard_dialog)
 620 {
 621         ModestWizardDialogClass *klass = MODEST_WIZARD_DIALOG_GET_CLASS (wizard_dialog);
 622
 623         /* Call the vfunc, which may be overridden by derived classes: */
 624         if (klass->before_next) {
 625                 ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(wizard_dialog)->priv;
 626
 627                 gint current_page_num = gtk_notebook_get_current_page (priv->notebook);
 628
 629                 /* Get widgets for the two pages: */
 630                 GtkWidget* current_page_widget = gtk_notebook_get_nth_page (priv->notebook, current_page_num);
 631
 632                 GtkWidget* next_page_widget = NULL;
 633                 if ((current_page_num + 1) < gtk_notebook_get_n_pages (priv->notebook))
 634                         next_page_widget = gtk_notebook_get_nth_page (priv->notebook, current_page_num + 1);
 635
 636                 MODEST_DEBUG_BLOCK (
 637                 g_debug ("Switching to page %d (%s)",
 638                          gtk_notebook_page_num (priv->notebook, next_page_widget),
 639                          gtk_notebook_get_tab_label_text (priv->notebook, next_page_widget));
 640
 641                 {
 642                         GtkWidget *p;
 643                         gint i;
 644                         g_debug ("\t***************");
 645                         for (i=0; i<gtk_notebook_get_n_pages(priv->notebook);i++) {
 646                                 p = gtk_notebook_get_nth_page (priv->notebook, i);
 647                                 g_debug ("\t%d - %s", i, gtk_notebook_get_tab_label_text (priv->notebook, p));
 648                         }
 649                         g_debug ("\t***************");
 650                 }
 651                                     );
 652
 653                 /* Ask the vfunc implementation whether navigation should be allowed: */
 654                 return (*(klass->before_next))(wizard_dialog, current_page_widget, next_page_widget);
 655         }
 656
 657         /* Allow navigation by default if there is no vfunc implementation: */
 658         return TRUE;
 659 }
 660
 661 static void
 662 invoke_enable_buttons_vfunc (ModestWizardDialog *wizard_dialog)
 663 {
 664         ModestWizardDialogClass *klass = MODEST_WIZARD_DIALOG_GET_CLASS (wizard_dialog);
 665
 666         /* Call the vfunc, which may be overridden by derived classes: */
 667         if (klass->enable_buttons) {
 668                 ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(wizard_dialog)->priv;
 669
 670                 gint current_page_num = gtk_notebook_get_current_page (priv->notebook);
 671
 672                 GtkWidget* current_page_widget = gtk_notebook_get_nth_page (priv->notebook, current_page_num);
 673
 674                 (*(klass->enable_buttons))(wizard_dialog, current_page_widget);
 675         }
 676 }