Pileus Git - ~andy/gtk/blob - gtk/gtkmessagedialog.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 2 -*- */
   2 /* GTK - The GIMP Toolkit
   3  * Copyright (C) 2000 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library 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 GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2003.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "config.h"
  29 #include <string.h>
  30
  31 #include "gtkmessagedialog.h"
  32 #include "gtkaccessible.h"
  33 #include "gtkbuildable.h"
  34 #include "gtklabel.h"
  35 #include "gtkhbox.h"
  36 #include "gtkvbox.h"
  37 #include "gtkimage.h"
  38 #include "gtkstock.h"
  39 #include "gtkiconfactory.h"
  40 #include "gtkintl.h"
  41 #include "gtkprivate.h"
  42
  43 /**
  44  * SECTION:gtkmessagedialog
  45  * @Short_description: A convenient message window
  46  * @Title: GtkMessageDialog
  47  * @See_also:#GtkDialog
  48  *
  49  * #GtkMessageDialog presents a dialog with an image representing the type of
  50  * message (Error, Question, etc.) alongside some message text. It's simply a
  51  * convenience widget; you could construct the equivalent of #GtkMessageDialog
  52  * from #GtkDialog without too much effort, but #GtkMessageDialog saves typing.
  53  *
  54  * The easiest way to do a modal message dialog is to use gtk_dialog_run(), though
  55  * you can also pass in the %GTK_DIALOG_MODAL flag, gtk_dialog_run() automatically
  56  * makes the dialog modal and waits for the user to respond to it. gtk_dialog_run()
  57  * returns when any dialog button is clicked.
  58  * <example>
  59  * <title>A modal dialog.</title>
  60  * <programlisting>
  61  *  dialog = gtk_message_dialog_new (main_application_window,
  62  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
  63  *                                   GTK_MESSAGE_ERROR,
  64  *                                   GTK_BUTTONS_CLOSE,
  65  *                                   "Error loading file '&percnt;s': &percnt;s",
  66  *                                   filename, g_strerror (errno));
  67  *  gtk_dialog_run (GTK_DIALOG (dialog));
  68  *  gtk_widget_destroy (dialog);
  69  * </programlisting>
  70  * </example>
  71  * You might do a non-modal #GtkMessageDialog as follows:
  72  * <example>
  73  * <title>A non-modal dialog.</title>
  74  * <programlisting>
  75  *  dialog = gtk_message_dialog_new (main_application_window,
  76  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
  77  *                                   GTK_MESSAGE_ERROR,
  78  *                                   GTK_BUTTONS_CLOSE,
  79  *                                   "Error loading file '&percnt;s': &percnt;s",
  80  *                                   filename, g_strerror (errno));
  81  *
  82  *  /&ast; Destroy the dialog when the user responds to it (e.g. clicks a button) &ast;/
  83  *  g_signal_connect_swapped (dialog, "response",
  84  *                            G_CALLBACK (gtk_widget_destroy),
  85  *                            dialog);
  86  * </programlisting>
  87  * </example>
  88  *
  89  * <refsect2 id="GtkMessageDialog-BUILDER-UI">
  90  * <title>GtkMessageDialog as GtkBuildable</title>
  91  * <para>
  92  * The GtkMessageDialog implementation of the GtkBuildable interface exposes
  93  * the message area as an internal child with the name "message_area".
  94  * </para>
  95  * </refsect2>
  96  */
  97
  98 struct _GtkMessageDialogPrivate
  99 {
 100   GtkWidget     *image;
 101   GtkWidget     *label;
 102   GtkWidget     *message_area; /* vbox for the primary and secondary labels, and any extra content from the caller */
 103   GtkWidget     *secondary_label;
 104
 105   guint          has_primary_markup : 1;
 106   guint          has_secondary_text : 1;
 107   guint          message_type       : 3;
 108 };
 109
 110 static void gtk_message_dialog_style_set  (GtkWidget             *widget,
 111                                            GtkStyle              *prev_style);
 112
 113 static void gtk_message_dialog_set_property (GObject          *object,
 114                                              guint             prop_id,
 115                                              const GValue     *value,
 116                                              GParamSpec       *pspec);
 117 static void gtk_message_dialog_get_property (GObject          *object,
 118                                              guint             prop_id,
 119                                              GValue           *value,
 120                                              GParamSpec       *pspec);
 121 static void gtk_message_dialog_add_buttons  (GtkMessageDialog *message_dialog,
 122                                              GtkButtonsType    buttons);
 123 static void      gtk_message_dialog_buildable_interface_init     (GtkBuildableIface *iface);
 124 static GObject * gtk_message_dialog_buildable_get_internal_child (GtkBuildable  *buildable,
 125                                                                   GtkBuilder    *builder,
 126                                                                   const gchar   *childname);
 127
 128
 129 enum {
 130   PROP_0,
 131   PROP_MESSAGE_TYPE,
 132   PROP_BUTTONS,
 133   PROP_TEXT,
 134   PROP_USE_MARKUP,
 135   PROP_SECONDARY_TEXT,
 136   PROP_SECONDARY_USE_MARKUP,
 137   PROP_IMAGE,
 138   PROP_MESSAGE_AREA
 139 };
 140
 141 G_DEFINE_TYPE_WITH_CODE (GtkMessageDialog, gtk_message_dialog, GTK_TYPE_DIALOG,
 142                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 143                                                 gtk_message_dialog_buildable_interface_init))
 144
 145 static GtkBuildableIface *parent_buildable_iface;
 146
 147 static void
 148 gtk_message_dialog_buildable_interface_init (GtkBuildableIface *iface)
 149 {
 150   parent_buildable_iface = g_type_interface_peek_parent (iface);
 151   iface->get_internal_child = gtk_message_dialog_buildable_get_internal_child;
 152   iface->custom_tag_start = parent_buildable_iface->custom_tag_start;
 153   iface->custom_finished = parent_buildable_iface->custom_finished;
 154 }
 155
 156 static GObject *
 157 gtk_message_dialog_buildable_get_internal_child (GtkBuildable *buildable,
 158                                                  GtkBuilder   *builder,
 159                                                  const gchar  *childname)
 160 {
 161   if (strcmp (childname, "message_area") == 0)
 162     return G_OBJECT (gtk_message_dialog_get_message_area (GTK_MESSAGE_DIALOG (buildable)));
 163
 164   return parent_buildable_iface->get_internal_child (buildable, builder, childname);
 165 }
 166
 167
 168 static void
 169 gtk_message_dialog_class_init (GtkMessageDialogClass *class)
 170 {
 171   GtkWidgetClass *widget_class;
 172   GObjectClass *gobject_class;
 173
 174   widget_class = GTK_WIDGET_CLASS (class);
 175   gobject_class = G_OBJECT_CLASS (class);
 176
 177   widget_class->style_set = gtk_message_dialog_style_set;
 178
 179   gobject_class->set_property = gtk_message_dialog_set_property;
 180   gobject_class->get_property = gtk_message_dialog_get_property;
 181
 182   gtk_widget_class_install_style_property (widget_class,
 183                                            g_param_spec_int ("message-border",
 184                                                              P_("Image/label border"),
 185                                                              P_("Width of border around the label and image in the message dialog"),
 186                                                              0,
 187                                                              G_MAXINT,
 188                                                              12,
 189                                                              GTK_PARAM_READABLE));
 190
 191   /**
 192    * GtkMessageDialog:message-type:
 193    *
 194    * The type of the message. The type is used to determine
 195    * the image that is shown in the dialog, unless the image is
 196    * explicitly set by the ::image property.
 197    */
 198   g_object_class_install_property (gobject_class,
 199                                    PROP_MESSAGE_TYPE,
 200                                    g_param_spec_enum ("message-type",
 201                                                       P_("Message Type"),
 202                                                       P_("The type of message"),
 203                                                       GTK_TYPE_MESSAGE_TYPE,
 204                                                       GTK_MESSAGE_INFO,
 205                                                       GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 206   g_object_class_install_property (gobject_class,
 207                                    PROP_BUTTONS,
 208                                    g_param_spec_enum ("buttons",
 209                                                       P_("Message Buttons"),
 210                                                       P_("The buttons shown in the message dialog"),
 211                                                       GTK_TYPE_BUTTONS_TYPE,
 212                                                       GTK_BUTTONS_NONE,
 213                                                       GTK_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
 214
 215   /**
 216    * GtkMessageDialog:text:
 217    *
 218    * The primary text of the message dialog. If the dialog has
 219    * a secondary text, this will appear as the title.
 220    *
 221    * Since: 2.10
 222    */
 223   g_object_class_install_property (gobject_class,
 224                                    PROP_TEXT,
 225                                    g_param_spec_string ("text",
 226                                                         P_("Text"),
 227                                                         P_("The primary text of the message dialog"),
 228                                                         "",
 229                                                         GTK_PARAM_READWRITE));
 230
 231   /**
 232    * GtkMessageDialog:use-markup:
 233    *
 234    * %TRUE if the primary text of the dialog includes Pango markup.
 235    * See pango_parse_markup().
 236    *
 237    * Since: 2.10
 238    */
 239   g_object_class_install_property (gobject_class,
 240                                    PROP_USE_MARKUP,
 241                                    g_param_spec_boolean ("use-markup",
 242                                                          P_("Use Markup"),
 243                                                          P_("The primary text of the title includes Pango markup."),
 244                                                          FALSE,
 245                                                          GTK_PARAM_READWRITE));
 246
 247   /**
 248    * GtkMessageDialog:secondary-text:
 249    *
 250    * The secondary text of the message dialog.
 251    *
 252    * Since: 2.10
 253    */
 254   g_object_class_install_property (gobject_class,
 255                                    PROP_SECONDARY_TEXT,
 256                                    g_param_spec_string ("secondary-text",
 257                                                         P_("Secondary Text"),
 258                                                         P_("The secondary text of the message dialog"),
 259                                                         NULL,
 260                                                         GTK_PARAM_READWRITE));
 261
 262   /**
 263    * GtkMessageDialog:secondary-use-markup:
 264    *
 265    * %TRUE if the secondary text of the dialog includes Pango markup.
 266    * See pango_parse_markup().
 267    *
 268    * Since: 2.10
 269    */
 270   g_object_class_install_property (gobject_class,
 271                                    PROP_SECONDARY_USE_MARKUP,
 272                                    g_param_spec_boolean ("secondary-use-markup",
 273                                                          P_("Use Markup in secondary"),
 274                                                          P_("The secondary text includes Pango markup."),
 275                                                          FALSE,
 276                                                          GTK_PARAM_READWRITE));
 277
 278   /**
 279    * GtkMessageDialog:image:
 280    *
 281    * The image for this dialog.
 282    *
 283    * Since: 2.10
 284    */
 285   g_object_class_install_property (gobject_class,
 286                                    PROP_IMAGE,
 287                                    g_param_spec_object ("image",
 288                                                         P_("Image"),
 289                                                         P_("The image"),
 290                                                         GTK_TYPE_WIDGET,
 291                                                         GTK_PARAM_READWRITE));
 292
 293   /**
 294    * GtkMessageDialog:message-area
 295    *
 296    * The #GtkVBox that corresponds to the message area of this dialog.  See
 297    * gtk_message_dialog_get_message_area() for a detailed description of this
 298    * area.
 299    *
 300    * Since: 2.22
 301    */
 302   g_object_class_install_property (gobject_class,
 303                                    PROP_MESSAGE_AREA,
 304                                    g_param_spec_object ("message-area",
 305                                                         P_("Message area"),
 306                                                         P_("GtkVBox that holds the dialog's primary and secondary labels"),
 307                                                         GTK_TYPE_WIDGET,
 308                                                         GTK_PARAM_READABLE));
 309
 310   g_type_class_add_private (gobject_class, sizeof (GtkMessageDialogPrivate));
 311 }
 312
 313 static void
 314 gtk_message_dialog_init (GtkMessageDialog *dialog)
 315 {
 316   GtkWidget *hbox;
 317   GtkDialog *message_dialog = GTK_DIALOG (dialog);
 318   GtkWidget *action_area, *content_area;
 319   GtkMessageDialogPrivate *priv;
 320
 321   dialog->priv = G_TYPE_INSTANCE_GET_PRIVATE (dialog,
 322                                               GTK_TYPE_MESSAGE_DIALOG,
 323                                               GtkMessageDialogPrivate);
 324   priv = dialog->priv;
 325
 326   content_area = gtk_dialog_get_content_area (message_dialog);
 327   action_area = gtk_dialog_get_action_area (message_dialog);
 328
 329   gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
 330   gtk_window_set_title (GTK_WINDOW (dialog), "");
 331   gtk_window_set_skip_taskbar_hint (GTK_WINDOW (dialog), TRUE);
 332
 333   priv->has_primary_markup = FALSE;
 334   priv->has_secondary_text = FALSE;
 335   priv->secondary_label = gtk_label_new (NULL);
 336   gtk_widget_set_no_show_all (priv->secondary_label, TRUE);
 337
 338   priv->label = gtk_label_new (NULL);
 339   priv->image = gtk_image_new_from_stock (NULL, GTK_ICON_SIZE_DIALOG);
 340   gtk_misc_set_alignment (GTK_MISC (priv->image), 0.5, 0.0);
 341
 342   gtk_label_set_line_wrap  (GTK_LABEL (priv->label), TRUE);
 343   gtk_label_set_selectable (GTK_LABEL (priv->label), TRUE);
 344   gtk_misc_set_alignment   (GTK_MISC  (priv->label), 0.0, 0.0);
 345
 346   gtk_label_set_line_wrap  (GTK_LABEL (priv->secondary_label), TRUE);
 347   gtk_label_set_selectable (GTK_LABEL (priv->secondary_label), TRUE);
 348   gtk_misc_set_alignment   (GTK_MISC  (priv->secondary_label), 0.0, 0.0);
 349
 350   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, FALSE, 12);
 351   priv->message_area = gtk_box_new (GTK_ORIENTATION_VERTICAL, FALSE, 12);
 352
 353   gtk_box_pack_start (GTK_BOX (priv->message_area), priv->label,
 354                       FALSE, FALSE, 0);
 355
 356   gtk_box_pack_start (GTK_BOX (priv->message_area), priv->secondary_label,
 357                       TRUE, TRUE, 0);
 358
 359   gtk_box_pack_start (GTK_BOX (hbox), priv->image,
 360                       FALSE, FALSE, 0);
 361
 362   gtk_box_pack_start (GTK_BOX (hbox), priv->message_area,
 363                       TRUE, TRUE, 0);
 364
 365   gtk_box_pack_start (GTK_BOX (content_area),
 366                       hbox,
 367                       FALSE, FALSE, 0);
 368
 369   gtk_container_set_border_width (GTK_CONTAINER (dialog), 5);
 370   gtk_container_set_border_width (GTK_CONTAINER (hbox), 5);
 371   gtk_box_set_spacing (GTK_BOX (content_area), 14); /* 14 + 2 * 5 = 24 */
 372   gtk_container_set_border_width (GTK_CONTAINER (action_area), 5);
 373   gtk_box_set_spacing (GTK_BOX (action_area), 6);
 374
 375   gtk_widget_show_all (hbox);
 376 }
 377
 378 static void
 379 setup_primary_label_font (GtkMessageDialog *dialog)
 380 {
 381   GtkMessageDialogPrivate *priv = dialog->priv;
 382   gint size;
 383   PangoFontDescription *font_desc;
 384
 385   /* unset the font settings */
 386   gtk_widget_modify_font (priv->label, NULL);
 387
 388   if (priv->has_secondary_text && !priv->has_primary_markup)
 389     {
 390       size = pango_font_description_get_size (gtk_widget_get_style (priv->label)->font_desc);
 391       font_desc = pango_font_description_new ();
 392       pango_font_description_set_weight (font_desc, PANGO_WEIGHT_BOLD);
 393       pango_font_description_set_size (font_desc, size * PANGO_SCALE_LARGE);
 394       gtk_widget_modify_font (priv->label, font_desc);
 395       pango_font_description_free (font_desc);
 396     }
 397 }
 398
 399 static void
 400 setup_type (GtkMessageDialog *dialog,
 401             GtkMessageType    type)
 402 {
 403   GtkMessageDialogPrivate *priv = dialog->priv;
 404   const gchar *stock_id = NULL;
 405   AtkObject *atk_obj;
 406
 407   priv->message_type = type;
 408
 409   switch (type)
 410     {
 411     case GTK_MESSAGE_INFO:
 412       stock_id = GTK_STOCK_DIALOG_INFO;
 413       break;
 414
 415     case GTK_MESSAGE_QUESTION:
 416       stock_id = GTK_STOCK_DIALOG_QUESTION;
 417       break;
 418
 419     case GTK_MESSAGE_WARNING:
 420       stock_id = GTK_STOCK_DIALOG_WARNING;
 421       break;
 422
 423     case GTK_MESSAGE_ERROR:
 424       stock_id = GTK_STOCK_DIALOG_ERROR;
 425       break;
 426
 427     case GTK_MESSAGE_OTHER:
 428       break;
 429
 430     default:
 431       g_warning ("Unknown GtkMessageType %u", type);
 432       break;
 433     }
 434
 435   if (stock_id)
 436     gtk_image_set_from_stock (GTK_IMAGE (priv->image), stock_id,
 437                               GTK_ICON_SIZE_DIALOG);
 438
 439   atk_obj = gtk_widget_get_accessible (GTK_WIDGET (dialog));
 440   if (GTK_IS_ACCESSIBLE (atk_obj))
 441     {
 442       atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
 443       if (stock_id)
 444         {
 445           GtkStockItem item;
 446
 447           gtk_stock_lookup (stock_id, &item);
 448           atk_object_set_name (atk_obj, item.label);
 449         }
 450     }
 451 }
 452
 453 static void
 454 gtk_message_dialog_set_property (GObject      *object,
 455                                  guint         prop_id,
 456                                  const GValue *value,
 457                                  GParamSpec   *pspec)
 458 {
 459   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (object);
 460   GtkMessageDialogPrivate *priv = dialog->priv;
 461
 462   switch (prop_id)
 463     {
 464     case PROP_MESSAGE_TYPE:
 465       setup_type (dialog, g_value_get_enum (value));
 466       break;
 467     case PROP_BUTTONS:
 468       gtk_message_dialog_add_buttons (dialog, g_value_get_enum (value));
 469       break;
 470     case PROP_TEXT:
 471       if (priv->has_primary_markup)
 472         gtk_label_set_markup (GTK_LABEL (priv->label),
 473                               g_value_get_string (value));
 474       else
 475         gtk_label_set_text (GTK_LABEL (priv->label),
 476                             g_value_get_string (value));
 477       break;
 478     case PROP_USE_MARKUP:
 479       priv->has_primary_markup = g_value_get_boolean (value) != FALSE;
 480       gtk_label_set_use_markup (GTK_LABEL (priv->label),
 481                                 priv->has_primary_markup);
 482       setup_primary_label_font (dialog);
 483       break;
 484     case PROP_SECONDARY_TEXT:
 485       {
 486         const gchar *txt = g_value_get_string (value);
 487
 488         if (gtk_label_get_use_markup (GTK_LABEL (priv->secondary_label)))
 489           gtk_label_set_markup (GTK_LABEL (priv->secondary_label), txt);
 490         else
 491           gtk_label_set_text (GTK_LABEL (priv->secondary_label), txt);
 492
 493         if (txt)
 494           {
 495             priv->has_secondary_text = TRUE;
 496             gtk_widget_show (priv->secondary_label);
 497           }
 498         else
 499           {
 500             priv->has_secondary_text = FALSE;
 501             gtk_widget_hide (priv->secondary_label);
 502           }
 503         setup_primary_label_font (dialog);
 504       }
 505       break;
 506     case PROP_SECONDARY_USE_MARKUP:
 507       gtk_label_set_use_markup (GTK_LABEL (priv->secondary_label),
 508                                 g_value_get_boolean (value));
 509       break;
 510     case PROP_IMAGE:
 511       gtk_message_dialog_set_image (dialog, g_value_get_object (value));
 512       break;
 513
 514     default:
 515       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 516       break;
 517     }
 518 }
 519
 520 static void
 521 gtk_message_dialog_get_property (GObject     *object,
 522                                  guint        prop_id,
 523                                  GValue      *value,
 524                                  GParamSpec  *pspec)
 525 {
 526   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (object);
 527   GtkMessageDialogPrivate *priv = dialog->priv;
 528
 529   switch (prop_id)
 530     {
 531     case PROP_MESSAGE_TYPE:
 532       g_value_set_enum (value, (GtkMessageType) priv->message_type);
 533       break;
 534     case PROP_TEXT:
 535       g_value_set_string (value, gtk_label_get_label (GTK_LABEL (priv->label)));
 536       break;
 537     case PROP_USE_MARKUP:
 538       g_value_set_boolean (value, priv->has_primary_markup);
 539       break;
 540     case PROP_SECONDARY_TEXT:
 541       if (priv->has_secondary_text)
 542       g_value_set_string (value,
 543                           gtk_label_get_label (GTK_LABEL (priv->secondary_label)));
 544       else
 545         g_value_set_string (value, NULL);
 546       break;
 547     case PROP_SECONDARY_USE_MARKUP:
 548       if (priv->has_secondary_text)
 549         g_value_set_boolean (value,
 550                              gtk_label_get_use_markup (GTK_LABEL (priv->secondary_label)));
 551       else
 552         g_value_set_boolean (value, FALSE);
 553       break;
 554     case PROP_IMAGE:
 555       g_value_set_object (value, priv->image);
 556       break;
 557     case PROP_MESSAGE_AREA:
 558       g_value_set_object (value, priv->message_area);
 559       break;
 560     default:
 561       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 562       break;
 563     }
 564 }
 565
 566 /**
 567  * gtk_message_dialog_new:
 568  * @parent: (allow-none): transient parent, or %NULL for none
 569  * @flags: flags
 570  * @type: type of message
 571  * @buttons: set of buttons to use
 572  * @message_format: (allow-none): printf()-style format string, or %NULL
 573  * @Varargs: arguments for @message_format
 574  *
 575  * Creates a new message dialog, which is a simple dialog with an icon
 576  * indicating the dialog type (error, warning, etc.) and some text the
 577  * user may want to see. When the user clicks a button a "response"
 578  * signal is emitted with response IDs from #GtkResponseType. See
 579  * #GtkDialog for more details.
 580  *
 581  * Return value: (transfer none): a new #GtkMessageDialog
 582  **/
 583 GtkWidget*
 584 gtk_message_dialog_new (GtkWindow     *parent,
 585                         GtkDialogFlags flags,
 586                         GtkMessageType type,
 587                         GtkButtonsType buttons,
 588                         const gchar   *message_format,
 589                         ...)
 590 {
 591   GtkWidget *widget;
 592   GtkDialog *dialog;
 593   gchar* msg = NULL;
 594   va_list args;
 595
 596   g_return_val_if_fail (parent == NULL || GTK_IS_WINDOW (parent), NULL);
 597
 598   widget = g_object_new (GTK_TYPE_MESSAGE_DIALOG,
 599                          "message-type", type,
 600                          "buttons", buttons,
 601                          NULL);
 602   dialog = GTK_DIALOG (widget);
 603
 604   if (message_format)
 605     {
 606       va_start (args, message_format);
 607       msg = g_strdup_vprintf (message_format, args);
 608       va_end (args);
 609
 610       gtk_label_set_text (GTK_LABEL (GTK_MESSAGE_DIALOG (widget)->priv->label),
 611                           msg);
 612
 613       g_free (msg);
 614     }
 615
 616   if (parent != NULL)
 617     gtk_window_set_transient_for (GTK_WINDOW (widget),
 618                                   GTK_WINDOW (parent));
 619
 620   if (flags & GTK_DIALOG_MODAL)
 621     gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 622
 623   if (flags & GTK_DIALOG_DESTROY_WITH_PARENT)
 624     gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog), TRUE);
 625
 626   return widget;
 627 }
 628
 629 /**
 630  * gtk_message_dialog_new_with_markup:
 631  * @parent: (allow-none): transient parent, or %NULL for none
 632  * @flags: flags
 633  * @type: type of message
 634  * @buttons: set of buttons to use
 635  * @message_format: (allow-none): printf()-style format string, or %NULL
 636  * @Varargs: arguments for @message_format
 637  *
 638  * Creates a new message dialog, which is a simple dialog with an icon
 639  * indicating the dialog type (error, warning, etc.) and some text which
 640  * is marked up with the <link linkend="PangoMarkupFormat">Pango text markup language</link>.
 641  * When the user clicks a button a "response" signal is emitted with
 642  * response IDs from #GtkResponseType. See #GtkDialog for more details.
 643  *
 644  * Special XML characters in the printf() arguments passed to this
 645  * function will automatically be escaped as necessary.
 646  * (See g_markup_printf_escaped() for how this is implemented.)
 647  * Usually this is what you want, but if you have an existing
 648  * Pango markup string that you want to use literally as the
 649  * label, then you need to use gtk_message_dialog_set_markup()
 650  * instead, since you can't pass the markup string either
 651  * as the format (it might contain '%' characters) or as a string
 652  * argument.
 653  * |[
 654  *  GtkWidget *dialog;
 655  *  dialog = gtk_message_dialog_new (main_application_window,
 656  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
 657  *                                   GTK_MESSAGE_ERROR,
 658  *                                   GTK_BUTTONS_CLOSE,
 659  *                                   NULL);
 660  *  gtk_message_dialog_set_markup (GTK_MESSAGE_DIALOG (dialog),
 661  *                                 markup);
 662  * ]|
 663  *
 664  * Return value: a new #GtkMessageDialog
 665  *
 666  * Since: 2.4
 667  **/
 668 GtkWidget*
 669 gtk_message_dialog_new_with_markup (GtkWindow     *parent,
 670                                     GtkDialogFlags flags,
 671                                     GtkMessageType type,
 672                                     GtkButtonsType buttons,
 673                                     const gchar   *message_format,
 674                                     ...)
 675 {
 676   GtkWidget *widget;
 677   va_list args;
 678   gchar *msg = NULL;
 679
 680   g_return_val_if_fail (parent == NULL || GTK_IS_WINDOW (parent), NULL);
 681
 682   widget = gtk_message_dialog_new (parent, flags, type, buttons, NULL);
 683
 684   if (message_format)
 685     {
 686       va_start (args, message_format);
 687       msg = g_markup_vprintf_escaped (message_format, args);
 688       va_end (args);
 689
 690       gtk_message_dialog_set_markup (GTK_MESSAGE_DIALOG (widget), msg);
 691
 692       g_free (msg);
 693     }
 694
 695   return widget;
 696 }
 697
 698 /**
 699  * gtk_message_dialog_set_image:
 700  * @dialog: a #GtkMessageDialog
 701  * @image: the image
 702  *
 703  * Sets the dialog's image to @image.
 704  *
 705  * Since: 2.10
 706  **/
 707 void
 708 gtk_message_dialog_set_image (GtkMessageDialog *dialog,
 709                               GtkWidget        *image)
 710 {
 711   GtkMessageDialogPrivate *priv;
 712   GtkWidget *parent;
 713
 714   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (dialog));
 715   g_return_if_fail (image == NULL || GTK_IS_WIDGET (image));
 716
 717   priv = dialog->priv;
 718
 719   if (image == NULL)
 720     {
 721       image = gtk_image_new_from_stock (NULL, GTK_ICON_SIZE_DIALOG);
 722       gtk_misc_set_alignment (GTK_MISC (image), 0.5, 0.0);
 723     }
 724
 725   priv->message_type = GTK_MESSAGE_OTHER;
 726
 727   parent = gtk_widget_get_parent (priv->image);
 728   gtk_container_add (GTK_CONTAINER (parent), image);
 729   gtk_container_remove (GTK_CONTAINER (parent), priv->image);
 730   gtk_box_reorder_child (GTK_BOX (parent), image, 0);
 731
 732   priv->image = image;
 733
 734   g_object_notify (G_OBJECT (dialog), "image");
 735 }
 736
 737 /**
 738  * gtk_message_dialog_get_image:
 739  * @dialog: a #GtkMessageDialog
 740  *
 741  * Gets the dialog's image.
 742  *
 743  * Return value: (transfer none): the dialog's image
 744  *
 745  * Since: 2.14
 746  **/
 747 GtkWidget *
 748 gtk_message_dialog_get_image (GtkMessageDialog *dialog)
 749 {
 750   g_return_val_if_fail (GTK_IS_MESSAGE_DIALOG (dialog), NULL);
 751
 752   return dialog->priv->image;
 753 }
 754
 755 /**
 756  * gtk_message_dialog_set_markup:
 757  * @message_dialog: a #GtkMessageDialog
 758  * @str: markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
 759  *
 760  * Sets the text of the message dialog to be @str, which is marked
 761  * up with the <link linkend="PangoMarkupFormat">Pango text markup
 762  * language</link>.
 763  *
 764  * Since: 2.4
 765  **/
 766 void
 767 gtk_message_dialog_set_markup (GtkMessageDialog *message_dialog,
 768                                const gchar      *str)
 769 {
 770   GtkMessageDialogPrivate *priv;
 771
 772   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 773
 774   priv = message_dialog->priv;
 775
 776   priv->has_primary_markup = TRUE;
 777   gtk_label_set_markup (GTK_LABEL (priv->label), str);
 778 }
 779
 780 /**
 781  * gtk_message_dialog_format_secondary_text:
 782  * @message_dialog: a #GtkMessageDialog
 783  * @message_format: (allow-none): printf()-style format string, or %NULL
 784  * @Varargs: arguments for @message_format
 785  *
 786  * Sets the secondary text of the message dialog to be @message_format
 787  * (with printf()-style).
 788  *
 789  * Note that setting a secondary text makes the primary text become
 790  * bold, unless you have provided explicit markup.
 791  *
 792  * Since: 2.6
 793  **/
 794 void
 795 gtk_message_dialog_format_secondary_text (GtkMessageDialog *message_dialog,
 796                                           const gchar      *message_format,
 797                                           ...)
 798 {
 799   va_list args;
 800   gchar *msg = NULL;
 801   GtkMessageDialogPrivate *priv;
 802
 803   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 804
 805   priv = message_dialog->priv;
 806
 807   if (message_format)
 808     {
 809       priv->has_secondary_text = TRUE;
 810
 811       va_start (args, message_format);
 812       msg = g_strdup_vprintf (message_format, args);
 813       va_end (args);
 814
 815       gtk_widget_show (priv->secondary_label);
 816       gtk_label_set_text (GTK_LABEL (priv->secondary_label), msg);
 817
 818       g_free (msg);
 819     }
 820   else
 821     {
 822       priv->has_secondary_text = FALSE;
 823       gtk_widget_hide (priv->secondary_label);
 824     }
 825
 826   setup_primary_label_font (message_dialog);
 827 }
 828
 829 /**
 830  * gtk_message_dialog_format_secondary_markup:
 831  * @message_dialog: a #GtkMessageDialog
 832  * @message_format: printf()-style markup string (see
 833      <link linkend="PangoMarkupFormat">Pango markup format</link>), or %NULL
 834  * @Varargs: arguments for @message_format
 835  *
 836  * Sets the secondary text of the message dialog to be @message_format (with
 837  * printf()-style), which is marked up with the
 838  * <link linkend="PangoMarkupFormat">Pango text markup language</link>.
 839  *
 840  * Note that setting a secondary text makes the primary text become
 841  * bold, unless you have provided explicit markup.
 842  *
 843  * Due to an oversight, this function does not escape special XML characters
 844  * like gtk_message_dialog_new_with_markup() does. Thus, if the arguments
 845  * may contain special XML characters, you should use g_markup_printf_escaped()
 846  * to escape it.
 847
 848  * <informalexample><programlisting>
 849  * gchar *msg;
 850  *
 851  * msg = g_markup_printf_escaped (message_format, ...);
 852  * gtk_message_dialog_format_secondary_markup (message_dialog, "&percnt;s", msg);
 853  * g_free (msg);
 854  * </programlisting></informalexample>
 855  *
 856  * Since: 2.6
 857  **/
 858 void
 859 gtk_message_dialog_format_secondary_markup (GtkMessageDialog *message_dialog,
 860                                             const gchar      *message_format,
 861                                             ...)
 862 {
 863   va_list args;
 864   gchar *msg = NULL;
 865   GtkMessageDialogPrivate *priv;
 866
 867   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 868
 869   priv = message_dialog->priv;
 870
 871   if (message_format)
 872     {
 873       priv->has_secondary_text = TRUE;
 874
 875       va_start (args, message_format);
 876       msg = g_strdup_vprintf (message_format, args);
 877       va_end (args);
 878
 879       gtk_widget_show (priv->secondary_label);
 880       gtk_label_set_markup (GTK_LABEL (priv->secondary_label), msg);
 881
 882       g_free (msg);
 883     }
 884   else
 885     {
 886       priv->has_secondary_text = FALSE;
 887       gtk_widget_hide (priv->secondary_label);
 888     }
 889
 890   setup_primary_label_font (message_dialog);
 891 }
 892
 893 /**
 894  * gtk_message_dialog_get_message_area:
 895  * @message_dialog: a #GtkMessageDialog
 896  *
 897  * Returns the message area of the dialog. This is the box where the
 898  * dialog's primary and secondary labels are packed. You can add your
 899  * own extra content to that box and it will appear below those labels,
 900  * on the right side of the dialog's image (or on the left for right-to-left
 901  * languages).  See gtk_dialog_get_content_area() for the corresponding
 902  * function in the parent #GtkDialog.
 903  *
 904  * Return value: (transfer none): A #GtkVBox corresponding to the
 905  *     "message area" in the @message_dialog.
 906  *
 907  * Since: 2.22
 908  **/
 909 GtkWidget *
 910 gtk_message_dialog_get_message_area (GtkMessageDialog *message_dialog)
 911 {
 912   g_return_val_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog), NULL);
 913
 914   return message_dialog->priv->message_area;
 915 }
 916
 917 static void
 918 gtk_message_dialog_add_buttons (GtkMessageDialog* message_dialog,
 919                                 GtkButtonsType buttons)
 920 {
 921   GtkDialog* dialog = GTK_DIALOG (message_dialog);
 922
 923   switch (buttons)
 924     {
 925     case GTK_BUTTONS_NONE:
 926       /* nothing */
 927       break;
 928
 929     case GTK_BUTTONS_OK:
 930       gtk_dialog_add_button (dialog,
 931                              GTK_STOCK_OK,
 932                              GTK_RESPONSE_OK);
 933       break;
 934
 935     case GTK_BUTTONS_CLOSE:
 936       gtk_dialog_add_button (dialog,
 937                              GTK_STOCK_CLOSE,
 938                              GTK_RESPONSE_CLOSE);
 939       break;
 940
 941     case GTK_BUTTONS_CANCEL:
 942       gtk_dialog_add_button (dialog,
 943                              GTK_STOCK_CANCEL,
 944                              GTK_RESPONSE_CANCEL);
 945       break;
 946
 947     case GTK_BUTTONS_YES_NO:
 948       gtk_dialog_add_button (dialog,
 949                              GTK_STOCK_NO,
 950                              GTK_RESPONSE_NO);
 951       gtk_dialog_add_button (dialog,
 952                              GTK_STOCK_YES,
 953                              GTK_RESPONSE_YES);
 954       gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
 955                                                GTK_RESPONSE_YES,
 956                                                GTK_RESPONSE_NO,
 957                                                -1);
 958       break;
 959
 960     case GTK_BUTTONS_OK_CANCEL:
 961       gtk_dialog_add_button (dialog,
 962                              GTK_STOCK_CANCEL,
 963                              GTK_RESPONSE_CANCEL);
 964       gtk_dialog_add_button (dialog,
 965                              GTK_STOCK_OK,
 966                              GTK_RESPONSE_OK);
 967       gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
 968                                                GTK_RESPONSE_OK,
 969                                                GTK_RESPONSE_CANCEL,
 970                                                -1);
 971       break;
 972
 973     default:
 974       g_warning ("Unknown GtkButtonsType");
 975       break;
 976     }
 977
 978   g_object_notify (G_OBJECT (message_dialog), "buttons");
 979 }
 980
 981 static void
 982 gtk_message_dialog_style_set (GtkWidget *widget,
 983                               GtkStyle  *prev_style)
 984 {
 985   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (widget);
 986   GtkWidget *parent;
 987   gint border_width;
 988
 989   parent = gtk_widget_get_parent (gtk_message_dialog_get_image (dialog));
 990
 991   if (parent)
 992     {
 993       gtk_widget_style_get (widget, "message-border",
 994                             &border_width, NULL);
 995
 996       gtk_container_set_border_width (GTK_CONTAINER (parent),
 997                                       MAX (0, border_width - 7));
 998     }
 999
1000   setup_primary_label_font (dialog);
1001
1002   GTK_WIDGET_CLASS (gtk_message_dialog_parent_class)->style_set (widget, prev_style);
1003 }