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     ModestWizardDialogResponseOverrideFunc override_func;
 116 };
 117
 118
 119 GType
 120 modest_wizard_dialog_get_type (void)
 121 {
 122     static GType wizard_dialog_type = 0;
 123
 124     if (!wizard_dialog_type) {
 125
 126         static const GTypeInfo wizard_dialog_info = {
 127             sizeof (ModestWizardDialogClass),
 128             NULL,       /* base_init      */
 129             NULL,       /* base_finalize  */
 130             (GClassInitFunc) class_init,
 131             NULL,       /* class_finalize */
 132             NULL,       /* class_data     */
 133             sizeof (ModestWizardDialog),
 134             0,          /* n_preallocs    */
 135             (GInstanceInitFunc) init,
 136         };
 137
 138         wizard_dialog_type = g_type_register_static (GTK_TYPE_DIALOG,
 139                                                      "ModestWizardDialog",
 140                                                      &wizard_dialog_info,
 141                                                      0);
 142     }
 143
 144     return wizard_dialog_type;
 145 }
 146
 147 static void
 148 class_init (ModestWizardDialogClass *wizard_dialog_class)
 149 {
 150     GObjectClass *object_class = G_OBJECT_CLASS (wizard_dialog_class);
 151
 152     parent_class = g_type_class_peek_parent (wizard_dialog_class);
 153
 154     g_type_class_add_private (wizard_dialog_class,
 155                               sizeof(ModestWizardDialogPrivate));
 156
 157     /* Override virtual methods */
 158     object_class->set_property = set_property;
 159     object_class->get_property = get_property;
 160     object_class->finalize     = finalize;
 161
 162     /**
 163      * ModestWizardDialog:wizard-name:
 164      *
 165      * The name of the wizard.
 166      */
 167     g_object_class_install_property (object_class, PROP_WIZARD_NAME,
 168             g_param_spec_string
 169             ("wizard-name",
 170              "Wizard Name",
 171              "The name of the ModestWizardDialog",
 172              NULL,
 173              G_PARAM_READWRITE));
 174
 175     /**
 176      * ModestWizardDialog:wizard-notebook:
 177      *
 178      * The notebook object, which is used by the ModestWizardDialog.
 179      */
 180     g_object_class_install_property(object_class, PROP_WIZARD_NOTEBOOK,
 181             g_param_spec_object
 182             ("wizard-notebook",
 183              "Wizard Notebook",
 184              "GtkNotebook object to be used in the "
 185              "ModestWizardDialog",
 186              GTK_TYPE_NOTEBOOK, G_PARAM_READWRITE));
 187
 188     /**
 189      * ModestWizardDialog:autotitle
 190      *
 191      * If the wizard should automatically try to change the window title when changing steps.
 192      * Set to FALSE if you'd like to override the default behaviour.
 193      *
 194      * Since: 0.14.5
 195      */
 196     g_object_class_install_property(object_class, PROP_WIZARD_AUTOTITLE,
 197             g_param_spec_boolean
 198             ("autotitle",
 199              "AutoTitle",
 200              "If the wizard should autotitle itself",
 201              TRUE,
 202              G_PARAM_READWRITE));
 203 }
 204
 205 static void
 206 finalize (GObject *object)
 207 {
 208     ModestWizardDialog *dialog = MODEST_WIZARD_DIALOG (object);
 209     g_return_if_fail (dialog != NULL);
 210
 211     if (dialog->priv->wizard_name != NULL)
 212         g_free (MODEST_WIZARD_DIALOG (object)->priv->wizard_name);
 213
 214     if (G_OBJECT_CLASS (parent_class)->finalize)
 215         G_OBJECT_CLASS (parent_class)->finalize(object);
 216 }
 217
 218 /* Disable or enable the Previous, Next and Finish buttons */
 219 static void
 220 make_buttons_sensitive (ModestWizardDialog *wizard_dialog,
 221                         gboolean previous,
 222                         gboolean finish,
 223                         gboolean next)
 224 {
 225     gtk_dialog_set_response_sensitive (GTK_DIALOG (wizard_dialog),
 226                                        MODEST_WIZARD_DIALOG_PREVIOUS,
 227                                        previous);
 228
 229     gtk_dialog_set_response_sensitive (GTK_DIALOG (wizard_dialog),
 230                                        MODEST_WIZARD_DIALOG_FINISH,
 231                                        finish);
 232
 233     gtk_dialog_set_response_sensitive (GTK_DIALOG (wizard_dialog),
 234                                        MODEST_WIZARD_DIALOG_NEXT,
 235                                        next);
 236 }
 237
 238 static void
 239 init (ModestWizardDialog *wizard_dialog)
 240 {
 241     /* Initialize private structure for faster member access */
 242     ModestWizardDialogPrivate *priv =
 243         G_TYPE_INSTANCE_GET_PRIVATE (wizard_dialog,
 244                 MODEST_TYPE_WIZARD_DIALOG,
 245                 ModestWizardDialogPrivate);
 246
 247     GtkDialog *dialog = GTK_DIALOG (wizard_dialog);
 248
 249     /* Init internal widgets */
 250     GtkWidget *vbox = gtk_vbox_new (FALSE, 0);
 251     gtk_dialog_set_has_separator (dialog, FALSE);
 252     wizard_dialog->priv = priv;
 253     priv->override_func = NULL;
 254     priv->box = GTK_BOX (gtk_hbox_new (FALSE, 0));
 255 #ifdef MODEST_TOOLKIT_HILDON2
 256     priv->image = NULL;
 257 #else
 258 #ifdef MODEST_TOOLKIT_GTK
 259     priv->image = gtk_image_new_from_stock (GTK_STOCK_PREFERENCES, GTK_ICON_SIZE_DIALOG);
 260 #else /*MODEST_TOOLKIT_GTK*/
 261 #if MODEST_HILDON_API == 0
 262     priv->image = gtk_image_new_from_icon_name ("qgn_widg_wizard",
 263                                                 HILDON_ICON_SIZE_WIDG_WIZARD);
 264 #else
 265     static int icon_size = 0;
 266     if (!icon_size)
 267             icon_size = gtk_icon_size_register("modest_wizard", 50, 50);
 268     priv->image = gtk_image_new_from_icon_name ("qgn_widg_wizard",
 269                                                 icon_size);
 270 #endif /*MODEST_HILDON_API == 0*/
 271 #endif /*!MODEST_TOOLKIT_GTK*/
 272 #endif /*MODEST_TOOLKIT_HILDON2 */
 273     /* Default values for user provided properties */
 274     priv->notebook = NULL;
 275     priv->wizard_name = NULL;
 276     priv->autotitle = TRUE;
 277
 278     /* Build wizard layout */
 279     gtk_box_pack_start_defaults (GTK_BOX (dialog->vbox), GTK_WIDGET (priv->box));
 280     gtk_box_pack_start_defaults (GTK_BOX (priv->box), GTK_WIDGET (vbox));
 281     if (priv->image)
 282       gtk_box_pack_start (GTK_BOX (vbox), GTK_WIDGET (priv->image), FALSE, FALSE, 0);
 283
 284     /* Add response buttons: finish, previous, next, cancel */
 285 #ifdef MODEST_TOOLKIT_HILDON1
 286     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_finish"), MODEST_WIZARD_DIALOG_FINISH);
 287     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_previous"), MODEST_WIZARD_DIALOG_PREVIOUS);
 288     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_next"), MODEST_WIZARD_DIALOG_NEXT);
 289     gtk_dialog_add_button (dialog, _HL("ecdg_bd_wizard_cancel"), MODEST_WIZARD_DIALOG_CANCEL);
 290 #endif
 291 #ifdef MODEST_TOOLKIT_HILDON2
 292     gtk_dialog_add_button (dialog, _HL("wdgt_bd_finish"), MODEST_WIZARD_DIALOG_FINISH);
 293     gtk_dialog_add_button (dialog, _HL("wdgt_bd_previous"), MODEST_WIZARD_DIALOG_PREVIOUS);
 294     gtk_dialog_add_button (dialog, _HL("wdgt_bd_next"), MODEST_WIZARD_DIALOG_NEXT);
 295 #endif
 296 #ifdef MODEST_TOOLKIT_GTK
 297     gtk_dialog_add_button (dialog, GTK_STOCK_SAVE, MODEST_WIZARD_DIALOG_FINISH);
 298     gtk_dialog_add_button (dialog, GTK_STOCK_GO_BACK, MODEST_WIZARD_DIALOG_PREVIOUS);
 299     gtk_dialog_add_button (dialog, GTK_STOCK_GO_FORWARD, MODEST_WIZARD_DIALOG_NEXT);
 300     gtk_dialog_add_button (dialog, GTK_STOCK_CANCEL, MODEST_WIZARD_DIALOG_CANCEL);
 301 #endif
 302
 303     /* Set initial button states: previous and finish buttons are disabled */
 304     make_buttons_sensitive (wizard_dialog, FALSE, FALSE, TRUE);
 305
 306     /* Show all the internal widgets */
 307     gtk_widget_show_all (GTK_WIDGET (dialog->vbox));
 308
 309     /* connect to dialog's response signal */
 310     g_signal_connect (G_OBJECT (dialog), "response",
 311             G_CALLBACK (response), NULL);
 312 }
 313
 314 #if GTK_CHECK_VERSION(2, 10, 0) /* These signals were added in GTK+ 2.10: */
 315 static void on_notebook_page_added(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
 329 static void on_notebook_page_removed(GtkNotebook *notebook,
 330                                      GtkWidget   *child,
 331                                      guint        page_num,
 332                                      gpointer     user_data)
 333 {
 334         ModestWizardDialog* dialog = NULL;
 335
 336         g_return_if_fail (MODEST_IS_WIZARD_DIALOG(user_data));
 337         dialog = MODEST_WIZARD_DIALOG(user_data);
 338
 339         /* The title should show the total number of pages: */
 340         create_title (dialog);
 341 }
 342 #endif /* GTK_CHECK_VERSION */
 343
 344 static void
 345 connect_to_notebook_signals(ModestWizardDialog* dialog)
 346 {
 347 #if GTK_CHECK_VERSION(2, 10, 0) /* These signals were added in GTK+ 2.10: */
 348         ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(dialog)->priv;
 349         g_return_if_fail (priv->notebook);
 350
 351         /* Connect to the notebook signals,
 352          * so we can update the title when necessary: */
 353         g_signal_connect (G_OBJECT (priv->notebook), "page-added",
 354                       G_CALLBACK (on_notebook_page_added), dialog);
 355         g_signal_connect (G_OBJECT (priv->notebook), "page-removed",
 356                       G_CALLBACK (on_notebook_page_removed), dialog);
 357 #endif /* GTK_CHECK_VERSION */
 358 }
 359
 360
 361 static void
 362 set_property (GObject      *object,
 363               guint        property_id,
 364               const GValue *value,
 365               GParamSpec   *pspec)
 366 {
 367     ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(object)->priv;
 368
 369     switch (property_id) {
 370
 371         case PROP_WIZARD_AUTOTITLE:
 372
 373             priv->autotitle = g_value_get_boolean (value);
 374
 375             if (priv->autotitle &&
 376                 priv->wizard_name &&
 377                 priv->notebook)
 378                 create_title (MODEST_WIZARD_DIALOG (object));
 379             else if (priv->wizard_name)
 380                 gtk_window_set_title (GTK_WINDOW (object), priv->wizard_name);
 381
 382             break;
 383
 384         case PROP_WIZARD_NAME:
 385
 386             /* Set new wizard name. This name will appear in titlebar */
 387             if (priv->wizard_name)
 388                 g_free (priv->wizard_name);
 389
 390             gchar *str = (gchar *) g_value_get_string (value);
 391             g_return_if_fail (str != NULL);
 392
 393             priv->wizard_name = g_strdup (str);
 394
 395             /* We need notebook in order to create title, since page information
 396                is used in title generation */
 397
 398             if (priv->notebook && priv->autotitle)
 399                 create_title (MODEST_WIZARD_DIALOG (object));
 400
 401             break;
 402
 403         case PROP_WIZARD_NOTEBOOK: {
 404
 405             GtkNotebook *book = GTK_NOTEBOOK (g_value_get_object (value));
 406             g_return_if_fail (book != NULL);
 407
 408             priv->notebook = book;
 409
 410             /* Set the default properties for the notebook (disable tabs,
 411              * and remove borders) to make it look like a nice wizard widget */
 412             gtk_notebook_set_show_tabs (priv->notebook, FALSE);
 413             gtk_notebook_set_show_border (priv->notebook, FALSE);
 414             gtk_box_pack_start_defaults (GTK_BOX( priv->box), GTK_WIDGET (priv->notebook));
 415
 416             /* Show the notebook so that a gtk_widget_show on the dialog is
 417              * all that is required to display the dialog correctly */
 418             gtk_widget_show ( GTK_WIDGET (priv->notebook));
 419
 420             /* Update dialog title to reflect current page stats etc */
 421             ModestWizardDialog *wizard_dialog = MODEST_WIZARD_DIALOG (object);
 422             if (priv->wizard_name && priv->autotitle)
 423                 create_title (wizard_dialog);
 424
 425             connect_to_notebook_signals (wizard_dialog);
 426
 427             }break;
 428
 429         default:
 430             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 431             break;
 432     }
 433 }
 434
 435 static void
 436 get_property (GObject      *object,
 437               guint        property_id,
 438               GValue       *value,
 439               GParamSpec   *pspec)
 440 {
 441     ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG (object)->priv;
 442
 443     switch (property_id) {
 444
 445         case PROP_WIZARD_NAME:
 446             g_value_set_string (value, priv->wizard_name);
 447             break;
 448
 449         case PROP_WIZARD_NOTEBOOK:
 450             g_value_set_object (value, priv->notebook);
 451             break;
 452
 453         default:
 454             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 455             break;
 456     }
 457 }
 458
 459 /*
 460  * Creates the title of the dialog taking into account the current
 461  * page of the notebook.
 462  */
 463 static void
 464 create_title (ModestWizardDialog *wizard_dialog)
 465 {
 466     gchar *str = NULL;
 467     ModestWizardDialogPrivate *priv = NULL;
 468     GtkNotebook *notebook = NULL;
 469
 470     g_return_if_fail (MODEST_IS_WIZARD_DIALOG(wizard_dialog));
 471     g_return_if_fail (wizard_dialog->priv != NULL);
 472
 473     priv = wizard_dialog->priv;
 474     notebook = priv->notebook;
 475
 476     if (!notebook)
 477         return;
 478
 479     /* Get page information, we'll need that when creating title */
 480     gint pages = gtk_notebook_get_n_pages (notebook);
 481     if (pages == 0)
 482       return;
 483
 484     gint current = gtk_notebook_get_current_page (priv->notebook);
 485     if (current < 0)
 486         current = 0;
 487
 488     /* the welcome title on the initial page */
 489     /* This is the standard wizard title, with, e.g., 1/4 at the end,
 490          * but the Modest UI spec does not want this. */
 491         /*
 492     if (current == 0) {
 493         str = g_strdup_printf (_HL("ecdg_ti_wizard_welcome"),
 494                 priv->wizard_name, pages);
 495     } else {
 496     */
 497         const gchar *steps = gtk_notebook_get_tab_label_text (notebook,
 498                 gtk_notebook_get_nth_page (notebook, current));
 499
 500                 /* This is the standard wizard title, with, e.g., 1/4 at the end,
 501                  * but the Modest UI spec does not want this.
 502                  */
 503                 /*
 504         str = g_strdup_printf (_HL("ecdg_ti_wizard_step"),
 505                 priv->wizard_name, current + 1, pages, steps);
 506         */
 507
 508         str = g_strdup_printf ((steps&&*steps)?_HL("%s: %s"):_HL("%s"),
 509                 priv->wizard_name, steps);
 510     /* } */
 511
 512     /* Update the dialog to display the generated title */
 513     gtk_window_set_title (GTK_WINDOW (wizard_dialog), str);
 514     g_free (str);
 515 }
 516
 517 /*
 518  * Response signal handler. This function is needed because GtkDialog's
 519  * handler for this signal closes the dialog and we don't want that, we
 520  * want to change pages and, dim certain response buttons. Overriding the
 521  * virtual function would not work because that would be called after the
 522  * signal handler implemented by GtkDialog.
 523  * FIXME: There is a much saner way to do that [MDK]
 524  */
 525 static void
 526 response (ModestWizardDialog   *wizard_dialog,
 527           gint                 response_id,
 528           gpointer             unused)
 529 {
 530     ModestWizardDialogPrivate *priv = wizard_dialog->priv;
 531     GtkNotebook *notebook = priv->notebook;
 532     gint current = 0;
 533     gboolean is_first, is_last;
 534
 535     if (priv->override_func) {
 536             if (priv->override_func (wizard_dialog, response_id, gtk_notebook_get_current_page (notebook))) {
 537                     /* Don't let the dialog close */
 538                     g_signal_stop_emission_by_name (wizard_dialog, "response");
 539
 540                     /* Force refresh of title */
 541                     if (priv->autotitle)
 542                             create_title (wizard_dialog);
 543                     return;
 544             }
 545     }
 546
 547     switch (response_id) {
 548
 549         case MODEST_WIZARD_DIALOG_PREVIOUS:
 550             gtk_notebook_prev_page (notebook); /* go to previous page */
 551             break;
 552
 553         case MODEST_WIZARD_DIALOG_NEXT:
 554                 if (invoke_before_next_vfunc (wizard_dialog))
 555                         gtk_notebook_next_page (notebook); /* go to next page */
 556
 557             break;
 558
 559         case MODEST_WIZARD_DIALOG_CANCEL:
 560                 return;
 561                 break;
 562         case MODEST_WIZARD_DIALOG_FINISH:
 563                 if (invoke_before_next_vfunc (wizard_dialog))
 564                 return;
 565
 566             break;
 567
 568     }
 569
 570     current = gtk_notebook_get_current_page (notebook);
 571     gint last = gtk_notebook_get_n_pages (notebook) - 1;
 572     is_last = current == last;
 573     is_first = current == 0;
 574
 575     /* If first page, previous and finish are disabled,
 576        if last page, next is disabled */
 577     make_buttons_sensitive (wizard_dialog,
 578                             (is_first) ? FALSE : TRUE,
 579                             TRUE,
 580                             (is_last) ? FALSE : TRUE);
 581
 582     /* Allow derived classes to disable buttons to prevent navigation,
 583      * according to their own validation logic: */
 584     invoke_enable_buttons_vfunc (wizard_dialog);
 585
 586     /* Don't let the dialog close */
 587     g_signal_stop_emission_by_name (wizard_dialog, "response");
 588
 589     /* We show the default image on first and last pages */
 590     last = gtk_notebook_get_n_pages (notebook) - 1;
 591     if (priv->image) {
 592             if (current == last || current == 0)
 593                     gtk_widget_show (GTK_WIDGET(priv->image));
 594             else
 595                     gtk_widget_hide (GTK_WIDGET(priv->image));
 596     }
 597
 598     /* New page number may appear in the title, update it */
 599     if (priv->autotitle)
 600         create_title (wizard_dialog);
 601 }
 602
 603 /**
 604  * modest_wizard_dialog_new:
 605  * @parent: a #GtkWindow
 606  * @wizard_name: the name of dialog
 607  * @notebook: the notebook to be shown on the dialog
 608  *
 609  * Creates a new #ModestWizardDialog.
 610  *
 611  * Returns: a new #ModestWizardDialog
 612  */
 613 GtkWidget*
 614 modest_wizard_dialog_new (GtkWindow   *parent,
 615                           const char  *wizard_name,
 616                           GtkNotebook *notebook)
 617 {
 618     GtkWidget *widget;
 619
 620     g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
 621
 622     widget = GTK_WIDGET (g_object_new
 623             (MODEST_TYPE_WIZARD_DIALOG,
 624              "wizard-name", wizard_name,
 625              "wizard-notebook", notebook, NULL));
 626
 627     if (parent)
 628         gtk_window_set_transient_for (GTK_WINDOW (widget), parent);
 629
 630     return widget;
 631 }
 632
 633 /**
 634  * modest_wizard_dialog_force_title_update:
 635  * @wizard_dialog: The wizard dialog
 636  *
 637  * Force the title to be rebuilt, for instance when you have added or
 638  * removed notebook pages. This function is not necessary when using GTK+ 2.10,
 639  * because that has GtkNotebook signals that will be used to update the title
 640  * automatically.
 641  */
 642 void
 643 modest_wizard_dialog_force_title_update (ModestWizardDialog   *wizard_dialog)
 644 {
 645         create_title (wizard_dialog);
 646 }
 647
 648 static gboolean
 649 invoke_before_next_vfunc (ModestWizardDialog *wizard_dialog)
 650 {
 651         ModestWizardDialogClass *klass = MODEST_WIZARD_DIALOG_GET_CLASS (wizard_dialog);
 652
 653         /* Call the vfunc, which may be overridden by derived classes: */
 654         if (klass->before_next) {
 655                 ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(wizard_dialog)->priv;
 656
 657                 gint current_page_num = gtk_notebook_get_current_page (priv->notebook);
 658
 659                 /* Get widgets for the two pages: */
 660                 GtkWidget* current_page_widget = gtk_notebook_get_nth_page (priv->notebook, current_page_num);
 661
 662                 GtkWidget* next_page_widget = NULL;
 663                 if ((current_page_num + 1) < gtk_notebook_get_n_pages (priv->notebook))
 664                         next_page_widget = gtk_notebook_get_nth_page (priv->notebook, current_page_num + 1);
 665
 666                 MODEST_DEBUG_BLOCK (
 667                 g_debug ("Switching to page %d (%s)",
 668                          gtk_notebook_page_num (priv->notebook, next_page_widget),
 669                          gtk_notebook_get_tab_label_text (priv->notebook, next_page_widget));
 670
 671                 {
 672                         GtkWidget *p;
 673                         gint i;
 674                         g_debug ("\t***************");
 675                         for (i=0; i<gtk_notebook_get_n_pages(priv->notebook);i++) {
 676                                 p = gtk_notebook_get_nth_page (priv->notebook, i);
 677                                 g_debug ("\t%d - %s", i, gtk_notebook_get_tab_label_text (priv->notebook, p));
 678                         }
 679                         g_debug ("\t***************");
 680                 }
 681                                     );
 682
 683                 /* Ask the vfunc implementation whether navigation should be allowed: */
 684                 return (*(klass->before_next))(wizard_dialog, current_page_widget, next_page_widget);
 685         }
 686
 687         /* Allow navigation by default if there is no vfunc implementation: */
 688         return TRUE;
 689 }
 690
 691 static void
 692 invoke_enable_buttons_vfunc (ModestWizardDialog *wizard_dialog)
 693 {
 694         ModestWizardDialogClass *klass = MODEST_WIZARD_DIALOG_GET_CLASS (wizard_dialog);
 695
 696         /* Call the vfunc, which may be overridden by derived classes: */
 697         if (klass->enable_buttons) {
 698                 ModestWizardDialogPrivate *priv = MODEST_WIZARD_DIALOG(wizard_dialog)->priv;
 699
 700                 gint current_page_num = gtk_notebook_get_current_page (priv->notebook);
 701
 702                 GtkWidget* current_page_widget = gtk_notebook_get_nth_page (priv->notebook, current_page_num);
 703
 704                 (*(klass->enable_buttons))(wizard_dialog, current_page_widget);
 705         }
 706 }
 707
 708 void
 709 modest_wizard_dialog_set_response_override_handler (ModestWizardDialog *wizard_dialog,
 710                                                     ModestWizardDialogResponseOverrideFunc callback)
 711 {
 712     ModestWizardDialogPrivate *priv = wizard_dialog->priv;
 713
 714     priv->override_func = callback;
 715 }