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, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 /*
  20  * Modified by the GTK+ Team and others 1997-2003.  See the AUTHORS
  21  * file for a list of people on the GTK+ Team.  See the ChangeLog
  22  * files for a list of changes.  These files are distributed with
  23  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <string.h>
  29
  30 #include "gtkmessagedialog.h"
  31 #include "gtkaccessible.h"
  32 #include "gtkbuildable.h"
  33 #include "gtklabel.h"
  34 #include "gtkbox.h"
  35 #include "gtkimage.h"
  36 #include "gtkstock.h"
  37 #include "gtkiconfactory.h"
  38 #include "gtkintl.h"
  39 #include "gtkprivate.h"
  40 #include "gtktypebuiltins.h"
  41
  42 /**
  43  * SECTION:gtkmessagedialog
  44  * @Short_description: A convenient message window
  45  * @Title: GtkMessageDialog
  46  * @See_also:#GtkDialog
  47  *
  48  * #GtkMessageDialog presents a dialog with an image representing the type of
  49  * message (Error, Question, etc.) alongside some message text. It's simply a
  50  * convenience widget; you could construct the equivalent of #GtkMessageDialog
  51  * from #GtkDialog without too much effort, but #GtkMessageDialog saves typing.
  52  *
  53  * The easiest way to do a modal message dialog is to use gtk_dialog_run(), though
  54  * you can also pass in the %GTK_DIALOG_MODAL flag, gtk_dialog_run() automatically
  55  * makes the dialog modal and waits for the user to respond to it. gtk_dialog_run()
  56  * returns when any dialog button is clicked.
  57  * <example>
  58  * <title>A modal dialog.</title>
  59  * <programlisting>
  60  *  dialog = gtk_message_dialog_new (main_application_window,
  61  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
  62  *                                   GTK_MESSAGE_ERROR,
  63  *                                   GTK_BUTTONS_CLOSE,
  64  *                                   "Error loading file '&percnt;s': &percnt;s",
  65  *                                   filename, g_strerror (errno));
  66  *  gtk_dialog_run (GTK_DIALOG (dialog));
  67  *  gtk_widget_destroy (dialog);
  68  * </programlisting>
  69  * </example>
  70  * You might do a non-modal #GtkMessageDialog as follows:
  71  * <example>
  72  * <title>A non-modal dialog.</title>
  73  * <programlisting>
  74  *  dialog = gtk_message_dialog_new (main_application_window,
  75  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
  76  *                                   GTK_MESSAGE_ERROR,
  77  *                                   GTK_BUTTONS_CLOSE,
  78  *                                   "Error loading file '&percnt;s': &percnt;s",
  79  *                                   filename, g_strerror (errno));
  80  *
  81  *  /&ast; Destroy the dialog when the user responds to it (e.g. clicks a button) &ast;/
  82  *  g_signal_connect_swapped (dialog, "response",
  83  *                            G_CALLBACK (gtk_widget_destroy),
  84  *                            dialog);
  85  * </programlisting>
  86  * </example>
  87  *
  88  * <refsect2 id="GtkMessageDialog-BUILDER-UI">
  89  * <title>GtkMessageDialog as GtkBuildable</title>
  90  * <para>
  91  * The GtkMessageDialog implementation of the GtkBuildable interface exposes
  92  * the message area as an internal child with the name "message_area".
  93  * </para>
  94  * </refsect2>
  95  */
  96
  97 struct _GtkMessageDialogPrivate
  98 {
  99   GtkWidget     *image;
 100   GtkWidget     *label;
 101   GtkWidget     *message_area; /* vbox for the primary and secondary labels, and any extra content from the caller */
 102   GtkWidget     *secondary_label;
 103
 104   guint          has_primary_markup : 1;
 105   guint          has_secondary_text : 1;
 106   guint          message_type       : 3;
 107 };
 108
 109 static void gtk_message_dialog_style_updated (GtkWidget             *widget);
 110
 111 static void gtk_message_dialog_set_property (GObject          *object,
 112                                              guint             prop_id,
 113                                              const GValue     *value,
 114                                              GParamSpec       *pspec);
 115 static void gtk_message_dialog_get_property (GObject          *object,
 116                                              guint             prop_id,
 117                                              GValue           *value,
 118                                              GParamSpec       *pspec);
 119 static void gtk_message_dialog_add_buttons  (GtkMessageDialog *message_dialog,
 120                                              GtkButtonsType    buttons);
 121 static void      gtk_message_dialog_buildable_interface_init     (GtkBuildableIface *iface);
 122 static GObject * gtk_message_dialog_buildable_get_internal_child (GtkBuildable  *buildable,
 123                                                                   GtkBuilder    *builder,
 124                                                                   const gchar   *childname);
 125
 126
 127 enum {
 128   PROP_0,
 129   PROP_MESSAGE_TYPE,
 130   PROP_BUTTONS,
 131   PROP_TEXT,
 132   PROP_USE_MARKUP,
 133   PROP_SECONDARY_TEXT,
 134   PROP_SECONDARY_USE_MARKUP,
 135   PROP_IMAGE,
 136   PROP_MESSAGE_AREA
 137 };
 138
 139 G_DEFINE_TYPE_WITH_CODE (GtkMessageDialog, gtk_message_dialog, GTK_TYPE_DIALOG,
 140                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 141                                                 gtk_message_dialog_buildable_interface_init))
 142
 143 static GtkBuildableIface *parent_buildable_iface;
 144
 145 static void
 146 gtk_message_dialog_buildable_interface_init (GtkBuildableIface *iface)
 147 {
 148   parent_buildable_iface = g_type_interface_peek_parent (iface);
 149   iface->get_internal_child = gtk_message_dialog_buildable_get_internal_child;
 150   iface->custom_tag_start = parent_buildable_iface->custom_tag_start;
 151   iface->custom_finished = parent_buildable_iface->custom_finished;
 152 }
 153
 154 static GObject *
 155 gtk_message_dialog_buildable_get_internal_child (GtkBuildable *buildable,
 156                                                  GtkBuilder   *builder,
 157                                                  const gchar  *childname)
 158 {
 159   if (strcmp (childname, "message_area") == 0)
 160     return G_OBJECT (gtk_message_dialog_get_message_area (GTK_MESSAGE_DIALOG (buildable)));
 161
 162   return parent_buildable_iface->get_internal_child (buildable, builder, childname);
 163 }
 164
 165
 166 static void
 167 gtk_message_dialog_class_init (GtkMessageDialogClass *class)
 168 {
 169   GtkWidgetClass *widget_class;
 170   GObjectClass *gobject_class;
 171
 172   widget_class = GTK_WIDGET_CLASS (class);
 173   gobject_class = G_OBJECT_CLASS (class);
 174
 175   widget_class->style_updated = gtk_message_dialog_style_updated;
 176
 177   gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_ALERT);
 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_widget_set_halign (priv->image, GTK_ALIGN_CENTER);
 341   gtk_widget_set_valign (priv->image, GTK_ALIGN_START);
 342
 343   gtk_label_set_line_wrap  (GTK_LABEL (priv->label), TRUE);
 344   gtk_label_set_selectable (GTK_LABEL (priv->label), TRUE);
 345   gtk_widget_set_halign (priv->label, GTK_ALIGN_START);
 346   gtk_widget_set_valign (priv->label, GTK_ALIGN_START);
 347
 348   gtk_label_set_line_wrap  (GTK_LABEL (priv->secondary_label), TRUE);
 349   gtk_label_set_selectable (GTK_LABEL (priv->secondary_label), TRUE);
 350   gtk_widget_set_halign (priv->secondary_label, GTK_ALIGN_START);
 351   gtk_widget_set_valign (priv->secondary_label, GTK_ALIGN_START);
 352
 353   gtk_misc_set_alignment (GTK_MISC (priv->label), 0.0, 0.0);
 354   gtk_misc_set_alignment (GTK_MISC (priv->secondary_label), 0.0, 0.0);
 355
 356   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
 357   priv->message_area = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
 358
 359   gtk_box_pack_start (GTK_BOX (priv->message_area), priv->label,
 360                       FALSE, FALSE, 0);
 361
 362   gtk_box_pack_start (GTK_BOX (priv->message_area), priv->secondary_label,
 363                       TRUE, TRUE, 0);
 364
 365   gtk_box_pack_start (GTK_BOX (hbox), priv->image,
 366                       FALSE, FALSE, 0);
 367
 368   gtk_box_pack_start (GTK_BOX (hbox), priv->message_area,
 369                       TRUE, TRUE, 0);
 370
 371   gtk_box_pack_start (GTK_BOX (content_area),
 372                       hbox,
 373                       FALSE, FALSE, 0);
 374
 375   gtk_container_set_border_width (GTK_CONTAINER (dialog), 5);
 376   gtk_container_set_border_width (GTK_CONTAINER (hbox), 5);
 377   gtk_box_set_spacing (GTK_BOX (content_area), 14); /* 14 + 2 * 5 = 24 */
 378   gtk_container_set_border_width (GTK_CONTAINER (action_area), 5);
 379   gtk_box_set_spacing (GTK_BOX (action_area), 6);
 380
 381   gtk_message_dialog_style_updated (GTK_WIDGET (dialog));
 382
 383   gtk_widget_show_all (hbox);
 384 }
 385
 386 static void
 387 setup_primary_label_font (GtkMessageDialog *dialog)
 388 {
 389   GtkMessageDialogPrivate *priv = dialog->priv;
 390
 391   if (priv->has_secondary_text && !priv->has_primary_markup)
 392     {
 393       PangoAttrList *attributes;
 394       PangoAttribute *attr;
 395
 396       attributes = pango_attr_list_new ();
 397
 398       attr = pango_attr_weight_new (PANGO_WEIGHT_BOLD);
 399       pango_attr_list_insert (attributes, attr);
 400
 401       attr = pango_attr_scale_new (PANGO_SCALE_LARGE);
 402       pango_attr_list_insert (attributes, attr);
 403
 404       gtk_label_set_attributes (GTK_LABEL (priv->label), attributes);
 405       pango_attr_list_unref (attributes);
 406     }
 407   else
 408     {
 409       /* unset the font settings */
 410       gtk_label_set_attributes (GTK_LABEL (priv->label), NULL);
 411     }
 412 }
 413
 414 static void
 415 setup_type (GtkMessageDialog *dialog,
 416             GtkMessageType    type)
 417 {
 418   GtkMessageDialogPrivate *priv = dialog->priv;
 419   const gchar *stock_id = NULL;
 420   AtkObject *atk_obj;
 421
 422   priv->message_type = type;
 423
 424   switch (type)
 425     {
 426     case GTK_MESSAGE_INFO:
 427       stock_id = GTK_STOCK_DIALOG_INFO;
 428       break;
 429
 430     case GTK_MESSAGE_QUESTION:
 431       stock_id = GTK_STOCK_DIALOG_QUESTION;
 432       break;
 433
 434     case GTK_MESSAGE_WARNING:
 435       stock_id = GTK_STOCK_DIALOG_WARNING;
 436       break;
 437
 438     case GTK_MESSAGE_ERROR:
 439       stock_id = GTK_STOCK_DIALOG_ERROR;
 440       break;
 441
 442     case GTK_MESSAGE_OTHER:
 443       break;
 444
 445     default:
 446       g_warning ("Unknown GtkMessageType %u", type);
 447       break;
 448     }
 449
 450   if (stock_id)
 451     gtk_image_set_from_stock (GTK_IMAGE (priv->image), stock_id,
 452                               GTK_ICON_SIZE_DIALOG);
 453
 454   atk_obj = gtk_widget_get_accessible (GTK_WIDGET (dialog));
 455   if (GTK_IS_ACCESSIBLE (atk_obj))
 456     {
 457       atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
 458       if (stock_id)
 459         {
 460           GtkStockItem item;
 461
 462           gtk_stock_lookup (stock_id, &item);
 463           atk_object_set_name (atk_obj, item.label);
 464         }
 465     }
 466 }
 467
 468 static void
 469 gtk_message_dialog_set_property (GObject      *object,
 470                                  guint         prop_id,
 471                                  const GValue *value,
 472                                  GParamSpec   *pspec)
 473 {
 474   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (object);
 475   GtkMessageDialogPrivate *priv = dialog->priv;
 476
 477   switch (prop_id)
 478     {
 479     case PROP_MESSAGE_TYPE:
 480       setup_type (dialog, g_value_get_enum (value));
 481       break;
 482     case PROP_BUTTONS:
 483       gtk_message_dialog_add_buttons (dialog, g_value_get_enum (value));
 484       break;
 485     case PROP_TEXT:
 486       if (priv->has_primary_markup)
 487         gtk_label_set_markup (GTK_LABEL (priv->label),
 488                               g_value_get_string (value));
 489       else
 490         gtk_label_set_text (GTK_LABEL (priv->label),
 491                             g_value_get_string (value));
 492       break;
 493     case PROP_USE_MARKUP:
 494       priv->has_primary_markup = g_value_get_boolean (value) != FALSE;
 495       gtk_label_set_use_markup (GTK_LABEL (priv->label),
 496                                 priv->has_primary_markup);
 497       setup_primary_label_font (dialog);
 498       break;
 499     case PROP_SECONDARY_TEXT:
 500       {
 501         const gchar *txt = g_value_get_string (value);
 502
 503         if (gtk_label_get_use_markup (GTK_LABEL (priv->secondary_label)))
 504           gtk_label_set_markup (GTK_LABEL (priv->secondary_label), txt);
 505         else
 506           gtk_label_set_text (GTK_LABEL (priv->secondary_label), txt);
 507
 508         if (txt)
 509           {
 510             priv->has_secondary_text = TRUE;
 511             gtk_widget_show (priv->secondary_label);
 512           }
 513         else
 514           {
 515             priv->has_secondary_text = FALSE;
 516             gtk_widget_hide (priv->secondary_label);
 517           }
 518         setup_primary_label_font (dialog);
 519       }
 520       break;
 521     case PROP_SECONDARY_USE_MARKUP:
 522       gtk_label_set_use_markup (GTK_LABEL (priv->secondary_label),
 523                                 g_value_get_boolean (value));
 524       break;
 525     case PROP_IMAGE:
 526       gtk_message_dialog_set_image (dialog, g_value_get_object (value));
 527       break;
 528
 529     default:
 530       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 531       break;
 532     }
 533 }
 534
 535 static void
 536 gtk_message_dialog_get_property (GObject     *object,
 537                                  guint        prop_id,
 538                                  GValue      *value,
 539                                  GParamSpec  *pspec)
 540 {
 541   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (object);
 542   GtkMessageDialogPrivate *priv = dialog->priv;
 543
 544   switch (prop_id)
 545     {
 546     case PROP_MESSAGE_TYPE:
 547       g_value_set_enum (value, (GtkMessageType) priv->message_type);
 548       break;
 549     case PROP_TEXT:
 550       g_value_set_string (value, gtk_label_get_label (GTK_LABEL (priv->label)));
 551       break;
 552     case PROP_USE_MARKUP:
 553       g_value_set_boolean (value, priv->has_primary_markup);
 554       break;
 555     case PROP_SECONDARY_TEXT:
 556       if (priv->has_secondary_text)
 557       g_value_set_string (value,
 558                           gtk_label_get_label (GTK_LABEL (priv->secondary_label)));
 559       else
 560         g_value_set_string (value, NULL);
 561       break;
 562     case PROP_SECONDARY_USE_MARKUP:
 563       if (priv->has_secondary_text)
 564         g_value_set_boolean (value,
 565                              gtk_label_get_use_markup (GTK_LABEL (priv->secondary_label)));
 566       else
 567         g_value_set_boolean (value, FALSE);
 568       break;
 569     case PROP_IMAGE:
 570       g_value_set_object (value, priv->image);
 571       break;
 572     case PROP_MESSAGE_AREA:
 573       g_value_set_object (value, priv->message_area);
 574       break;
 575     default:
 576       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 577       break;
 578     }
 579 }
 580
 581 /**
 582  * gtk_message_dialog_new:
 583  * @parent: (allow-none): transient parent, or %NULL for none
 584  * @flags: flags
 585  * @type: type of message
 586  * @buttons: set of buttons to use
 587  * @message_format: (allow-none): printf()-style format string, or %NULL
 588  * @...: arguments for @message_format
 589  *
 590  * Creates a new message dialog, which is a simple dialog with an icon
 591  * indicating the dialog type (error, warning, etc.) and some text the
 592  * user may want to see. When the user clicks a button a "response"
 593  * signal is emitted with response IDs from #GtkResponseType. See
 594  * #GtkDialog for more details.
 595  *
 596  * Return value: (transfer none): a new #GtkMessageDialog
 597  */
 598 GtkWidget*
 599 gtk_message_dialog_new (GtkWindow     *parent,
 600                         GtkDialogFlags flags,
 601                         GtkMessageType type,
 602                         GtkButtonsType buttons,
 603                         const gchar   *message_format,
 604                         ...)
 605 {
 606   GtkWidget *widget;
 607   GtkDialog *dialog;
 608   gchar* msg = NULL;
 609   va_list args;
 610
 611   g_return_val_if_fail (parent == NULL || GTK_IS_WINDOW (parent), NULL);
 612
 613   widget = g_object_new (GTK_TYPE_MESSAGE_DIALOG,
 614                          "message-type", type,
 615                          "buttons", buttons,
 616                          NULL);
 617   dialog = GTK_DIALOG (widget);
 618
 619   if (message_format)
 620     {
 621       va_start (args, message_format);
 622       msg = g_strdup_vprintf (message_format, args);
 623       va_end (args);
 624
 625       gtk_label_set_text (GTK_LABEL (GTK_MESSAGE_DIALOG (widget)->priv->label),
 626                           msg);
 627
 628       g_free (msg);
 629     }
 630
 631   if (parent != NULL)
 632     gtk_window_set_transient_for (GTK_WINDOW (widget),
 633                                   GTK_WINDOW (parent));
 634
 635   if (flags & GTK_DIALOG_MODAL)
 636     gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 637
 638   if (flags & GTK_DIALOG_DESTROY_WITH_PARENT)
 639     gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog), TRUE);
 640
 641   return widget;
 642 }
 643
 644 /**
 645  * gtk_message_dialog_new_with_markup:
 646  * @parent: (allow-none): transient parent, or %NULL for none
 647  * @flags: flags
 648  * @type: type of message
 649  * @buttons: set of buttons to use
 650  * @message_format: (allow-none): printf()-style format string, or %NULL
 651  * @...: arguments for @message_format
 652  *
 653  * Creates a new message dialog, which is a simple dialog with an icon
 654  * indicating the dialog type (error, warning, etc.) and some text which
 655  * is marked up with the <link linkend="PangoMarkupFormat">Pango text markup language</link>.
 656  * When the user clicks a button a "response" signal is emitted with
 657  * response IDs from #GtkResponseType. See #GtkDialog for more details.
 658  *
 659  * Special XML characters in the printf() arguments passed to this
 660  * function will automatically be escaped as necessary.
 661  * (See g_markup_printf_escaped() for how this is implemented.)
 662  * Usually this is what you want, but if you have an existing
 663  * Pango markup string that you want to use literally as the
 664  * label, then you need to use gtk_message_dialog_set_markup()
 665  * instead, since you can't pass the markup string either
 666  * as the format (it might contain '%' characters) or as a string
 667  * argument.
 668  * |[
 669  *  GtkWidget *dialog;
 670  *  dialog = gtk_message_dialog_new (main_application_window,
 671  *                                   GTK_DIALOG_DESTROY_WITH_PARENT,
 672  *                                   GTK_MESSAGE_ERROR,
 673  *                                   GTK_BUTTONS_CLOSE,
 674  *                                   NULL);
 675  *  gtk_message_dialog_set_markup (GTK_MESSAGE_DIALOG (dialog),
 676  *                                 markup);
 677  * ]|
 678  *
 679  * Return value: a new #GtkMessageDialog
 680  *
 681  * Since: 2.4
 682  **/
 683 GtkWidget*
 684 gtk_message_dialog_new_with_markup (GtkWindow     *parent,
 685                                     GtkDialogFlags flags,
 686                                     GtkMessageType type,
 687                                     GtkButtonsType buttons,
 688                                     const gchar   *message_format,
 689                                     ...)
 690 {
 691   GtkWidget *widget;
 692   va_list args;
 693   gchar *msg = NULL;
 694
 695   g_return_val_if_fail (parent == NULL || GTK_IS_WINDOW (parent), NULL);
 696
 697   widget = gtk_message_dialog_new (parent, flags, type, buttons, NULL);
 698
 699   if (message_format)
 700     {
 701       va_start (args, message_format);
 702       msg = g_markup_vprintf_escaped (message_format, args);
 703       va_end (args);
 704
 705       gtk_message_dialog_set_markup (GTK_MESSAGE_DIALOG (widget), msg);
 706
 707       g_free (msg);
 708     }
 709
 710   return widget;
 711 }
 712
 713 /**
 714  * gtk_message_dialog_set_image:
 715  * @dialog: a #GtkMessageDialog
 716  * @image: the image
 717  *
 718  * Sets the dialog's image to @image.
 719  *
 720  * Since: 2.10
 721  **/
 722 void
 723 gtk_message_dialog_set_image (GtkMessageDialog *dialog,
 724                               GtkWidget        *image)
 725 {
 726   GtkMessageDialogPrivate *priv;
 727   GtkWidget *parent;
 728
 729   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (dialog));
 730   g_return_if_fail (image == NULL || GTK_IS_WIDGET (image));
 731
 732   priv = dialog->priv;
 733
 734   if (image == NULL)
 735     {
 736       image = gtk_image_new_from_stock (NULL, GTK_ICON_SIZE_DIALOG);
 737       gtk_widget_set_halign (image, GTK_ALIGN_CENTER);
 738       gtk_widget_set_valign (image, GTK_ALIGN_START);
 739     }
 740
 741   priv->message_type = GTK_MESSAGE_OTHER;
 742
 743   parent = gtk_widget_get_parent (priv->image);
 744   gtk_container_add (GTK_CONTAINER (parent), image);
 745   gtk_container_remove (GTK_CONTAINER (parent), priv->image);
 746   gtk_box_reorder_child (GTK_BOX (parent), image, 0);
 747
 748   priv->image = image;
 749
 750   g_object_notify (G_OBJECT (dialog), "image");
 751 }
 752
 753 /**
 754  * gtk_message_dialog_get_image:
 755  * @dialog: a #GtkMessageDialog
 756  *
 757  * Gets the dialog's image.
 758  *
 759  * Return value: (transfer none): the dialog's image
 760  *
 761  * Since: 2.14
 762  **/
 763 GtkWidget *
 764 gtk_message_dialog_get_image (GtkMessageDialog *dialog)
 765 {
 766   g_return_val_if_fail (GTK_IS_MESSAGE_DIALOG (dialog), NULL);
 767
 768   return dialog->priv->image;
 769 }
 770
 771 /**
 772  * gtk_message_dialog_set_markup:
 773  * @message_dialog: a #GtkMessageDialog
 774  * @str: markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
 775  *
 776  * Sets the text of the message dialog to be @str, which is marked
 777  * up with the <link linkend="PangoMarkupFormat">Pango text markup
 778  * language</link>.
 779  *
 780  * Since: 2.4
 781  **/
 782 void
 783 gtk_message_dialog_set_markup (GtkMessageDialog *message_dialog,
 784                                const gchar      *str)
 785 {
 786   GtkMessageDialogPrivate *priv;
 787
 788   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 789
 790   priv = message_dialog->priv;
 791
 792   priv->has_primary_markup = TRUE;
 793   gtk_label_set_markup (GTK_LABEL (priv->label), str);
 794 }
 795
 796 /**
 797  * gtk_message_dialog_format_secondary_text:
 798  * @message_dialog: a #GtkMessageDialog
 799  * @message_format: (allow-none): printf()-style format string, or %NULL
 800  * @...: arguments for @message_format
 801  *
 802  * Sets the secondary text of the message dialog to be @message_format
 803  * (with printf()-style).
 804  *
 805  * Note that setting a secondary text makes the primary text become
 806  * bold, unless you have provided explicit markup.
 807  *
 808  * Since: 2.6
 809  */
 810 void
 811 gtk_message_dialog_format_secondary_text (GtkMessageDialog *message_dialog,
 812                                           const gchar      *message_format,
 813                                           ...)
 814 {
 815   va_list args;
 816   gchar *msg = NULL;
 817   GtkMessageDialogPrivate *priv;
 818
 819   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 820
 821   priv = message_dialog->priv;
 822
 823   if (message_format)
 824     {
 825       priv->has_secondary_text = TRUE;
 826
 827       va_start (args, message_format);
 828       msg = g_strdup_vprintf (message_format, args);
 829       va_end (args);
 830
 831       gtk_widget_show (priv->secondary_label);
 832       gtk_label_set_text (GTK_LABEL (priv->secondary_label), msg);
 833
 834       g_free (msg);
 835     }
 836   else
 837     {
 838       priv->has_secondary_text = FALSE;
 839       gtk_widget_hide (priv->secondary_label);
 840     }
 841
 842   setup_primary_label_font (message_dialog);
 843 }
 844
 845 /**
 846  * gtk_message_dialog_format_secondary_markup:
 847  * @message_dialog: a #GtkMessageDialog
 848  * @message_format: printf()-style markup string (see
 849      <link linkend="PangoMarkupFormat">Pango markup format</link>), or %NULL
 850  * @...: arguments for @message_format
 851  *
 852  * Sets the secondary text of the message dialog to be @message_format (with
 853  * printf()-style), which is marked up with the
 854  * <link linkend="PangoMarkupFormat">Pango text markup language</link>.
 855  *
 856  * Note that setting a secondary text makes the primary text become
 857  * bold, unless you have provided explicit markup.
 858  *
 859  * Due to an oversight, this function does not escape special XML characters
 860  * like gtk_message_dialog_new_with_markup() does. Thus, if the arguments
 861  * may contain special XML characters, you should use g_markup_printf_escaped()
 862  * to escape it.
 863
 864  * <informalexample><programlisting>
 865  * gchar *msg;
 866  *
 867  * msg = g_markup_printf_escaped (message_format, ...);
 868  * gtk_message_dialog_format_secondary_markup (message_dialog, "&percnt;s", msg);
 869  * g_free (msg);
 870  * </programlisting></informalexample>
 871  *
 872  * Since: 2.6
 873  */
 874 void
 875 gtk_message_dialog_format_secondary_markup (GtkMessageDialog *message_dialog,
 876                                             const gchar      *message_format,
 877                                             ...)
 878 {
 879   va_list args;
 880   gchar *msg = NULL;
 881   GtkMessageDialogPrivate *priv;
 882
 883   g_return_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog));
 884
 885   priv = message_dialog->priv;
 886
 887   if (message_format)
 888     {
 889       priv->has_secondary_text = TRUE;
 890
 891       va_start (args, message_format);
 892       msg = g_strdup_vprintf (message_format, args);
 893       va_end (args);
 894
 895       gtk_widget_show (priv->secondary_label);
 896       gtk_label_set_markup (GTK_LABEL (priv->secondary_label), msg);
 897
 898       g_free (msg);
 899     }
 900   else
 901     {
 902       priv->has_secondary_text = FALSE;
 903       gtk_widget_hide (priv->secondary_label);
 904     }
 905
 906   setup_primary_label_font (message_dialog);
 907 }
 908
 909 /**
 910  * gtk_message_dialog_get_message_area:
 911  * @message_dialog: a #GtkMessageDialog
 912  *
 913  * Returns the message area of the dialog. This is the box where the
 914  * dialog's primary and secondary labels are packed. You can add your
 915  * own extra content to that box and it will appear below those labels,
 916  * on the right side of the dialog's image (or on the left for right-to-left
 917  * languages).  See gtk_dialog_get_content_area() for the corresponding
 918  * function in the parent #GtkDialog.
 919  *
 920  * Return value: (transfer none): A #GtkVBox corresponding to the
 921  *     "message area" in the @message_dialog.
 922  *
 923  * Since: 2.22
 924  **/
 925 GtkWidget *
 926 gtk_message_dialog_get_message_area (GtkMessageDialog *message_dialog)
 927 {
 928   g_return_val_if_fail (GTK_IS_MESSAGE_DIALOG (message_dialog), NULL);
 929
 930   return message_dialog->priv->message_area;
 931 }
 932
 933 static void
 934 gtk_message_dialog_add_buttons (GtkMessageDialog* message_dialog,
 935                                 GtkButtonsType buttons)
 936 {
 937   GtkDialog* dialog = GTK_DIALOG (message_dialog);
 938
 939   switch (buttons)
 940     {
 941     case GTK_BUTTONS_NONE:
 942       /* nothing */
 943       break;
 944
 945     case GTK_BUTTONS_OK:
 946       gtk_dialog_add_button (dialog,
 947                              GTK_STOCK_OK,
 948                              GTK_RESPONSE_OK);
 949       break;
 950
 951     case GTK_BUTTONS_CLOSE:
 952       gtk_dialog_add_button (dialog,
 953                              GTK_STOCK_CLOSE,
 954                              GTK_RESPONSE_CLOSE);
 955       break;
 956
 957     case GTK_BUTTONS_CANCEL:
 958       gtk_dialog_add_button (dialog,
 959                              GTK_STOCK_CANCEL,
 960                              GTK_RESPONSE_CANCEL);
 961       break;
 962
 963     case GTK_BUTTONS_YES_NO:
 964       gtk_dialog_add_button (dialog,
 965                              GTK_STOCK_NO,
 966                              GTK_RESPONSE_NO);
 967       gtk_dialog_add_button (dialog,
 968                              GTK_STOCK_YES,
 969                              GTK_RESPONSE_YES);
 970       gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
 971                                                GTK_RESPONSE_YES,
 972                                                GTK_RESPONSE_NO,
 973                                                -1);
 974       break;
 975
 976     case GTK_BUTTONS_OK_CANCEL:
 977       gtk_dialog_add_button (dialog,
 978                              GTK_STOCK_CANCEL,
 979                              GTK_RESPONSE_CANCEL);
 980       gtk_dialog_add_button (dialog,
 981                              GTK_STOCK_OK,
 982                              GTK_RESPONSE_OK);
 983       gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
 984                                                GTK_RESPONSE_OK,
 985                                                GTK_RESPONSE_CANCEL,
 986                                                -1);
 987       break;
 988
 989     default:
 990       g_warning ("Unknown GtkButtonsType");
 991       break;
 992     }
 993
 994   g_object_notify (G_OBJECT (message_dialog), "buttons");
 995 }
 996
 997 static void
 998 gtk_message_dialog_style_updated (GtkWidget *widget)
 999 {
1000   GtkMessageDialog *dialog = GTK_MESSAGE_DIALOG (widget);
1001   GtkWidget *parent;
1002   gint border_width;
1003
1004   parent = gtk_widget_get_parent (gtk_message_dialog_get_image (dialog));
1005
1006   if (parent)
1007     {
1008       gtk_widget_style_get (widget, "message-border",
1009                             &border_width, NULL);
1010
1011       gtk_container_set_border_width (GTK_CONTAINER (parent),
1012                                       MAX (0, border_width - 7));
1013     }
1014
1015   GTK_WIDGET_CLASS (gtk_message_dialog_parent_class)->style_updated (widget);
1016 }