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

   1 /*
   2  * gtkinfobar.c
   3  * This file is part of GTK+
   4  *
   5  * Copyright (C) 2005 - Paolo Maggi
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 /*
  24  * Modified by the gedit Team, 2005. See the AUTHORS file for a
  25  * list of people on the gtk Team.
  26  * See the gedit ChangeLog files for a list of changes.
  27  *
  28  * Modified by the GTK+ team, 2008-2009.
  29  */
  30
  31
  32 #include "config.h"
  33
  34 #include <stdlib.h>
  35
  36 #include "gtkinfobar.h"
  37 #include "gtkaccessible.h"
  38 #include "gtkbuildable.h"
  39 #include "gtkbox.h"
  40 #include "gtkvbbox.h"
  41 #include "gtklabel.h"
  42 #include "gtkbutton.h"
  43 #include "gtkenums.h"
  44 #include "gtkbindings.h"
  45 #include "gtkdialog.h"
  46 #include "gtkintl.h"
  47 #include "gtkprivate.h"
  48 #include "gtkstock.h"
  49 #include "gdkkeysyms.h"
  50
  51 /**
  52  * SECTION:gtkinfobar
  53  * @short_description: Report important messages to the user
  54  * @include: gtk/gtk.h
  55  * @see_also: #GtkStatusbar, #GtkMessageDialog
  56  *
  57  * #GtkInfoBar is a widget that can be used to show messages to
  58  * the user without showing a dialog. It is often temporarily shown
  59  * at the top or bottom of a document. In contrast to #GtkDialog, which
  60  * has a horizontal action area at the bottom, #GtkInfoBar has a
  61  * vertical action area at the side.
  62  *
  63  * The API of #GtkInfoBar is very similar to #GtkDialog, allowing you
  64  * to add buttons to the action area with gtk_info_bar_add_button() or
  65  * gtk_info_bar_new_with_buttons(). The sensitivity of action widgets
  66  * can be controlled with gtk_info_bar_set_response_sensitive().
  67  * To add widgets to the main content area of a #GtkInfoBar, use
  68  * gtk_info_bar_get_content_area() and add your widgets to the container.
  69  *
  70  * Similar to #GtkMessageDialog, the contents of a #GtkInfoBar can by
  71  * classified as error message, warning, informational message, etc,
  72  * by using gtk_info_bar_set_message_type(). GTK+ uses the message type
  73  * to determine the background color of the message area.
  74  *
  75  * <example>
  76  * <title>Simple GtkInfoBar usage.</title>
  77  * <programlisting>
  78  * /&ast; set up info bar &ast;/
  79  * info_bar = gtk_info_bar_new ();
  80  * gtk_widget_set_no_show_all (info_bar, TRUE);
  81  * message_label = gtk_label_new ("");
  82  * gtk_widget_show (message_label);
  83  * content_area = gtk_info_bar_get_content_area (GTK_INFO_BAR (info_bar));
  84  * gtk_container_add (GTK_CONTAINER (content_area), message_label);
  85  * gtk_info_bar_add_button (GTK_INFO_BAR (info_bar),
  86  *                          GTK_STOCK_OK, GTK_RESPONSE_OK);
  87  * g_signal_connect (info_bar, "response",
  88  *                   G_CALLBACK (gtk_widget_hide), NULL);
  89  * gtk_table_attach (GTK_TABLE (table),
  90  *                   info_bar,
  91  *                   0, 1, 2, 3,
  92  *                   GTK_EXPAND | GTK_FILL,  0,
  93  *                   0,                      0);
  94  *
  95  * /&ast; ... &ast;/
  96  *
  97  * /&ast; show an error message &ast;/
  98  * gtk_label_set_text (GTK_LABEL (message_label), error_message);
  99  * gtk_info_bar_set_message_type (GTK_INFO_BAR (info_bar),
 100  *                                GTK_MESSAGE_ERROR);
 101  * gtk_widget_show (info_bar);
 102  * </programlisting>
 103  * </example>
 104  *
 105  * <refsect2 id="GtkInfoBar-BUILDER-UI">
 106  * <title>GtkInfoBar as GtkBuildable</title>
 107  * <para>
 108  * The GtkInfoBar implementation of the GtkBuildable interface exposes
 109  * the content area and action area as internal children with the names
 110  * "content_area" and "action_area".
 111  * </para>
 112  * <para>
 113  * GtkInfoBar supports a custom &lt;action-widgets&gt; element, which
 114  * can contain multiple &lt;action-widget&gt; elements. The "response"
 115  * attribute specifies a numeric response, and the content of the element
 116  * is the id of widget (which should be a child of the dialogs @action_area).
 117  * </para>
 118  * </refsect2>
 119  */
 120
 121 enum
 122 {
 123   PROP_0,
 124   PROP_MESSAGE_TYPE
 125 };
 126
 127 struct _GtkInfoBarPrivate
 128 {
 129   GtkWidget *content_area;
 130   GtkWidget *action_area;
 131
 132   GtkMessageType message_type;
 133 };
 134
 135 typedef struct _ResponseData ResponseData;
 136
 137 struct _ResponseData
 138 {
 139   gint response_id;
 140 };
 141
 142 enum
 143 {
 144   RESPONSE,
 145   CLOSE,
 146   LAST_SIGNAL
 147 };
 148
 149 static guint signals[LAST_SIGNAL];
 150
 151
 152 static void     gtk_info_bar_set_property (GObject        *object,
 153                                            guint           prop_id,
 154                                            const GValue   *value,
 155                                            GParamSpec     *pspec);
 156 static void     gtk_info_bar_get_property (GObject        *object,
 157                                            guint           prop_id,
 158                                            GValue         *value,
 159                                            GParamSpec     *pspec);
 160 static void     gtk_info_bar_style_set    (GtkWidget      *widget,
 161                                            GtkStyle       *prev_style);
 162 static gboolean gtk_info_bar_expose       (GtkWidget      *widget,
 163                                            GdkEventExpose *event);
 164 static void     gtk_info_bar_buildable_interface_init     (GtkBuildableIface *iface);
 165 static GObject *gtk_info_bar_buildable_get_internal_child (GtkBuildable  *buildable,
 166                                                            GtkBuilder    *builder,
 167                                                            const gchar   *childname);
 168 static gboolean  gtk_info_bar_buildable_custom_tag_start   (GtkBuildable  *buildable,
 169                                                             GtkBuilder    *builder,
 170                                                             GObject       *child,
 171                                                             const gchar   *tagname,
 172                                                             GMarkupParser *parser,
 173                                                             gpointer      *data);
 174 static void      gtk_info_bar_buildable_custom_finished    (GtkBuildable  *buildable,
 175                                                             GtkBuilder    *builder,
 176                                                             GObject       *child,
 177                                                             const gchar   *tagname,
 178                                                             gpointer       user_data);
 179
 180
 181 G_DEFINE_TYPE_WITH_CODE (GtkInfoBar, gtk_info_bar, GTK_TYPE_HBOX,
 182                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 183                                                 gtk_info_bar_buildable_interface_init))
 184
 185 static void
 186 gtk_info_bar_set_property (GObject      *object,
 187                            guint         prop_id,
 188                            const GValue *value,
 189                            GParamSpec   *pspec)
 190 {
 191   GtkInfoBar *info_bar;
 192   GtkInfoBarPrivate *priv;
 193
 194   info_bar = GTK_INFO_BAR (object);
 195   priv = info_bar->priv;
 196
 197   switch (prop_id)
 198     {
 199     case PROP_MESSAGE_TYPE:
 200       gtk_info_bar_set_message_type (info_bar, g_value_get_enum (value));
 201       break;
 202     default:
 203       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 204       break;
 205     }
 206 }
 207
 208 static void
 209 gtk_info_bar_get_property (GObject    *object,
 210                            guint       prop_id,
 211                            GValue     *value,
 212                            GParamSpec *pspec)
 213 {
 214   GtkInfoBar *info_bar;
 215   GtkInfoBarPrivate *priv;
 216
 217   info_bar = GTK_INFO_BAR (object);
 218   priv = info_bar->priv;
 219
 220   switch (prop_id)
 221     {
 222     case PROP_MESSAGE_TYPE:
 223       g_value_set_enum (value, gtk_info_bar_get_message_type (info_bar));
 224       break;
 225     default:
 226       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 227       break;
 228     }
 229 }
 230
 231 static void
 232 gtk_info_bar_finalize (GObject *object)
 233 {
 234   G_OBJECT_CLASS (gtk_info_bar_parent_class)->finalize (object);
 235 }
 236
 237 static void
 238 response_data_free (gpointer data)
 239 {
 240   g_slice_free (ResponseData, data);
 241 }
 242
 243 static ResponseData *
 244 get_response_data (GtkWidget *widget,
 245                    gboolean   create)
 246 {
 247   ResponseData *ad = g_object_get_data (G_OBJECT (widget),
 248                                         "gtk-info-bar-response-data");
 249
 250   if (ad == NULL && create)
 251     {
 252       ad = g_slice_new (ResponseData);
 253
 254       g_object_set_data_full (G_OBJECT (widget),
 255                               I_("gtk-info-bar-response-data"),
 256                               ad,
 257                               response_data_free);
 258     }
 259
 260   return ad;
 261 }
 262
 263 static GtkWidget *
 264 find_button (GtkInfoBar *info_bar,
 265              gint        response_id)
 266 {
 267   GList *children, *list;
 268   GtkWidget *child = NULL;
 269
 270   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 271
 272   for (list = children; list; list = list->next)
 273     {
 274       ResponseData *rd = get_response_data (list->data, FALSE);
 275
 276       if (rd && rd->response_id == response_id)
 277         {
 278           child = list->data;
 279           break;
 280         }
 281     }
 282
 283   g_list_free (children);
 284
 285   return child;
 286 }
 287
 288 static void
 289 gtk_info_bar_close (GtkInfoBar *info_bar)
 290 {
 291   if (!find_button (info_bar, GTK_RESPONSE_CANCEL))
 292     return;
 293
 294   gtk_info_bar_response (GTK_INFO_BAR (info_bar),
 295                          GTK_RESPONSE_CANCEL);
 296 }
 297
 298 static gboolean
 299 gtk_info_bar_expose (GtkWidget      *widget,
 300                      GdkEventExpose *event)
 301 {
 302   GtkInfoBarPrivate *priv = GTK_INFO_BAR (widget)->priv;
 303   const char* type_detail[] = {
 304     "infobar-info",
 305     "infobar-warning",
 306     "infobar-question",
 307     "infobar-error",
 308     "infobar"
 309   };
 310
 311   if (priv->message_type != GTK_MESSAGE_OTHER)
 312     {
 313       GtkAllocation allocation;
 314       const char *detail;
 315
 316       detail = type_detail[priv->message_type];
 317
 318       gtk_widget_get_allocation (widget, &allocation);
 319
 320       gtk_paint_box (gtk_widget_get_style (widget),
 321                      gtk_widget_get_window (widget),
 322                      GTK_STATE_NORMAL,
 323                      GTK_SHADOW_OUT,
 324                      NULL,
 325                      widget,
 326                      detail,
 327                      allocation.x, allocation.y,
 328                      allocation.width, allocation.height);
 329     }
 330
 331   if (GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event)
 332     GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event (widget, event);
 333
 334   return FALSE;
 335 }
 336
 337 static void
 338 gtk_info_bar_class_init (GtkInfoBarClass *klass)
 339 {
 340   GtkWidgetClass *widget_class;
 341   GObjectClass *object_class;
 342   GtkBindingSet *binding_set;
 343
 344   widget_class = GTK_WIDGET_CLASS (klass);
 345   object_class = G_OBJECT_CLASS (klass);
 346
 347   object_class->get_property = gtk_info_bar_get_property;
 348   object_class->set_property = gtk_info_bar_set_property;
 349   object_class->finalize = gtk_info_bar_finalize;
 350
 351   widget_class->style_set = gtk_info_bar_style_set;
 352   widget_class->expose_event = gtk_info_bar_expose;
 353
 354   klass->close = gtk_info_bar_close;
 355
 356   /**
 357    * GtkInfoBar:message-type:
 358    *
 359    * The type of the message.
 360    *
 361    * The type is used to determine the colors to use in the info bar.
 362    * The following symbolic color names can by used to customize
 363    * these colors:
 364    * "info_fg_color", "info_bg_color",
 365    * "warning_fg_color", "warning_bg_color",
 366    * "question_fg_color", "question_bg_color",
 367    * "error_fg_color", "error_bg_color".
 368    * "other_fg_color", "other_bg_color".
 369    *
 370    * If the type is #GTK_MESSAGE_OTHER, no info bar is painted but the
 371    * colors are still set.
 372    *
 373    * Since: 2.18
 374    */
 375   g_object_class_install_property (object_class,
 376                                    PROP_MESSAGE_TYPE,
 377                                    g_param_spec_enum ("message-type",
 378                                                       P_("Message Type"),
 379                                                       P_("The type of message"),
 380                                                       GTK_TYPE_MESSAGE_TYPE,
 381                                                       GTK_MESSAGE_INFO,
 382                                                       GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 383   /**
 384    * GtkInfoBar::response:
 385    * @info_bar: the object on which the signal is emitted
 386    * @response_id: the response ID
 387    *
 388    * Emitted when an action widget is clicked or the application programmer
 389    * calls gtk_dialog_response(). The @response_id depends on which action
 390    * widget was clicked.
 391    *
 392    * Since: 2.18
 393    */
 394   signals[RESPONSE] = g_signal_new (I_("response"),
 395                                     G_OBJECT_CLASS_TYPE (klass),
 396                                     G_SIGNAL_RUN_LAST,
 397                                     G_STRUCT_OFFSET (GtkInfoBarClass, response),
 398                                     NULL, NULL,
 399                                     g_cclosure_marshal_VOID__INT,
 400                                     G_TYPE_NONE, 1,
 401                                     G_TYPE_INT);
 402
 403   /**
 404    * GtkInfoBar::close:
 405    *
 406    * The ::close signal is a
 407    * <link linkend="keybinding-signals">keybinding signal</link>
 408    * which gets emitted when the user uses a keybinding to dismiss
 409    * the info bar.
 410    *
 411    * The default binding for this signal is the Escape key.
 412    *
 413    * Since: 2.18
 414    */
 415   signals[CLOSE] =  g_signal_new (I_("close"),
 416                                   G_OBJECT_CLASS_TYPE (klass),
 417                                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 418                                   G_STRUCT_OFFSET (GtkInfoBarClass, close),
 419                                   NULL, NULL,
 420                                   g_cclosure_marshal_VOID__VOID,
 421                                   G_TYPE_NONE, 0);
 422
 423   /**
 424    * GtkInfoBar:content-area-border:
 425    *
 426    * The width of the border around the content
 427    * content area of the info bar.
 428    *
 429    * Since: 2.18
 430    */
 431   gtk_widget_class_install_style_property (widget_class,
 432                                            g_param_spec_int ("content-area-border",
 433                                                              P_("Content area border"),
 434                                                              P_("Width of border around the content area"),
 435                                                              0,
 436                                                              G_MAXINT,
 437                                                              8,
 438                                                              GTK_PARAM_READABLE));
 439
 440   /**
 441    * GtkInfoBar:content-area-spacing:
 442    *
 443    * The default spacing used between elements of the
 444    * content area of the info bar.
 445    *
 446    * Since: 2.18
 447    */
 448   gtk_widget_class_install_style_property (widget_class,
 449                                            g_param_spec_int ("content-area-spacing",
 450                                                              P_("Content area spacing"),
 451                                                              P_("Spacing between elements of the area"),
 452                                                              0,
 453                                                              G_MAXINT,
 454                                                              16,
 455                                                              GTK_PARAM_READABLE));
 456
 457   /**
 458    * GtkInfoBar:button-spacing:
 459    *
 460    * Spacing between buttons in the action area of the info bar.
 461    *
 462    * Since: 2.18
 463    */
 464   gtk_widget_class_install_style_property (widget_class,
 465                                            g_param_spec_int ("button-spacing",
 466                                                              P_("Button spacing"),
 467                                                              P_("Spacing between buttons"),
 468                                                              0,
 469                                                              G_MAXINT,
 470                                                              6,
 471                                                              GTK_PARAM_READABLE));
 472
 473   /**
 474    * GtkInfoBar:action-area-border:
 475    *
 476    * Width of the border around the action area of the info bar.
 477    *
 478    * Since: 2.18
 479    */
 480   gtk_widget_class_install_style_property (widget_class,
 481                                            g_param_spec_int ("action-area-border",
 482                                                              P_("Action area border"),
 483                                                              P_("Width of border around the action area"),
 484                                                              0,
 485                                                              G_MAXINT,
 486                                                              5,
 487                                                              GTK_PARAM_READABLE));
 488
 489   binding_set = gtk_binding_set_by_class (klass);
 490
 491   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0, "close", 0);
 492
 493   g_type_class_add_private (object_class, sizeof (GtkInfoBarPrivate));
 494 }
 495
 496 static void
 497 gtk_info_bar_update_colors (GtkInfoBar *info_bar)
 498 {
 499   GtkWidget *widget = GTK_WIDGET (info_bar);
 500   GtkInfoBarPrivate *priv = info_bar->priv;
 501   GdkColor info_default_border_color     = { 0, 0xb800, 0xad00, 0x9d00 };
 502   GdkColor info_default_fill_color       = { 0, 0xff00, 0xff00, 0xbf00 };
 503   GdkColor warning_default_border_color  = { 0, 0xb000, 0x7a00, 0x2b00 };
 504   GdkColor warning_default_fill_color    = { 0, 0xfc00, 0xaf00, 0x3e00 };
 505   GdkColor question_default_border_color = { 0, 0x6200, 0x7b00, 0xd960 };
 506   GdkColor question_default_fill_color   = { 0, 0x8c00, 0xb000, 0xd700 };
 507   GdkColor error_default_border_color    = { 0, 0xa800, 0x2700, 0x2700 };
 508   GdkColor error_default_fill_color      = { 0, 0xf000, 0x3800, 0x3800 };
 509   GdkColor other_default_border_color    = { 0, 0xb800, 0xad00, 0x9d00 };
 510   GdkColor other_default_fill_color      = { 0, 0xff00, 0xff00, 0xbf00 };
 511   GdkColor *fg, *bg;
 512   GdkColor sym_fg, sym_bg;
 513   GtkStyle *style;
 514   const char* fg_color_name[] = {
 515     "info_fg_color",
 516     "warning_fg_color",
 517     "question_fg_color",
 518     "error_fg_color",
 519     "other_fg_color"
 520   };
 521   const char* bg_color_name[] = {
 522     "info_bg_color",
 523     "warning_bg_color",
 524     "question_bg_color",
 525     "error_bg_color",
 526     "other_bg_color"
 527   };
 528
 529   style = gtk_widget_get_style (widget);
 530
 531   if (gtk_style_lookup_color (style, fg_color_name[priv->message_type], &sym_fg) &&
 532       gtk_style_lookup_color (style, bg_color_name[priv->message_type], &sym_bg))
 533     {
 534       fg = &sym_fg;
 535       bg = &sym_bg;
 536     }
 537   else
 538     {
 539       switch (priv->message_type)
 540         {
 541         case GTK_MESSAGE_INFO:
 542           fg = &info_default_border_color;
 543           bg = &info_default_fill_color;
 544           break;
 545
 546         case GTK_MESSAGE_WARNING:
 547           fg = &warning_default_border_color;
 548           bg = &warning_default_fill_color;
 549           break;
 550
 551         case GTK_MESSAGE_QUESTION:
 552           fg = &question_default_border_color;
 553           bg = &question_default_fill_color;
 554           break;
 555
 556         case GTK_MESSAGE_ERROR:
 557           fg = &error_default_border_color;
 558           bg = &error_default_fill_color;
 559           break;
 560
 561         case GTK_MESSAGE_OTHER:
 562           fg = &other_default_border_color;
 563           bg = &other_default_fill_color;
 564           break;
 565
 566         default:
 567           g_assert_not_reached();
 568           fg = NULL;
 569           bg = NULL;
 570         }
 571     }
 572
 573   if (!gdk_color_equal (bg, &style->bg[GTK_STATE_NORMAL]))
 574     gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, bg);
 575   if (!gdk_color_equal (fg, &style->fg[GTK_STATE_NORMAL]))
 576     gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, fg);
 577 }
 578
 579 static void
 580 gtk_info_bar_style_set (GtkWidget *widget,
 581                         GtkStyle  *prev_style)
 582 {
 583   GtkInfoBar *info_bar = GTK_INFO_BAR (widget);
 584   gint button_spacing;
 585   gint action_area_border;
 586   gint content_area_spacing;
 587   gint content_area_border;
 588
 589   gtk_widget_style_get (widget,
 590                         "button-spacing", &button_spacing,
 591                         "action-area-border", &action_area_border,
 592                         "content-area-spacing", &content_area_spacing,
 593                         "content-area-border", &content_area_border,
 594                         NULL);
 595
 596   gtk_box_set_spacing (GTK_BOX (info_bar->priv->action_area), button_spacing);
 597   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->action_area),
 598                                   action_area_border);
 599   gtk_box_set_spacing (GTK_BOX (info_bar->priv->content_area), content_area_spacing);
 600   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->content_area),
 601                                   content_area_border);
 602
 603   gtk_info_bar_update_colors (info_bar);
 604 }
 605
 606 static void
 607 gtk_info_bar_init (GtkInfoBar *info_bar)
 608 {
 609   GtkWidget *content_area;
 610   GtkWidget *action_area;
 611
 612   gtk_widget_push_composite_child ();
 613
 614   info_bar->priv = G_TYPE_INSTANCE_GET_PRIVATE (info_bar,
 615                                                 GTK_TYPE_INFO_BAR,
 616                                                 GtkInfoBarPrivate);
 617
 618   content_area = gtk_hbox_new (FALSE, 0);
 619   gtk_widget_show (content_area);
 620   gtk_box_pack_start (GTK_BOX (info_bar), content_area, TRUE, TRUE, 0);
 621
 622   action_area = gtk_vbutton_box_new ();
 623   gtk_widget_show (action_area);
 624   gtk_button_box_set_layout (GTK_BUTTON_BOX (action_area), GTK_BUTTONBOX_END);
 625   gtk_box_pack_start (GTK_BOX (info_bar), action_area, FALSE, TRUE, 0);
 626
 627   gtk_widget_set_app_paintable (GTK_WIDGET (info_bar), TRUE);
 628   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (info_bar), TRUE);
 629
 630   info_bar->priv->content_area = content_area;
 631   info_bar->priv->action_area = action_area;
 632
 633   gtk_widget_pop_composite_child ();
 634 }
 635
 636 static GtkBuildableIface *parent_buildable_iface;
 637
 638 static void
 639 gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface)
 640 {
 641   parent_buildable_iface = g_type_interface_peek_parent (iface);
 642   iface->get_internal_child = gtk_info_bar_buildable_get_internal_child;
 643   iface->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
 644   iface->custom_finished = gtk_info_bar_buildable_custom_finished;
 645 }
 646
 647 static GObject *
 648 gtk_info_bar_buildable_get_internal_child (GtkBuildable *buildable,
 649                                            GtkBuilder   *builder,
 650                                            const gchar  *childname)
 651 {
 652   if (strcmp (childname, "content_area") == 0)
 653     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->content_area);
 654   else if (strcmp (childname, "action_area") == 0)
 655     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->action_area);
 656
 657   return parent_buildable_iface->get_internal_child (buildable,
 658                                                      builder,
 659                                                      childname);
 660 }
 661
 662 static gint
 663 get_response_for_widget (GtkInfoBar *info_bar,
 664                          GtkWidget  *widget)
 665 {
 666   ResponseData *rd;
 667
 668   rd = get_response_data (widget, FALSE);
 669   if (!rd)
 670     return GTK_RESPONSE_NONE;
 671   else
 672     return rd->response_id;
 673 }
 674
 675 static void
 676 action_widget_activated (GtkWidget  *widget,
 677                          GtkInfoBar *info_bar)
 678 {
 679   gint response_id;
 680
 681   response_id = get_response_for_widget (info_bar, widget);
 682   gtk_info_bar_response (info_bar, response_id);
 683 }
 684
 685 /**
 686  * gtk_info_bar_add_action_widget:
 687  * @info_bar: a #GtkInfoBar
 688  * @child: an activatable widget
 689  * @response_id: response ID for @child
 690  *
 691  * Add an activatable widget to the action area of a #GtkInfoBar,
 692  * connecting a signal handler that will emit the #GtkInfoBar::response
 693  * signal on the message area when the widget is activated. The widget
 694  * is appended to the end of the message areas action area.
 695  *
 696  * Since: 2.18
 697  */
 698 void
 699 gtk_info_bar_add_action_widget (GtkInfoBar *info_bar,
 700                                 GtkWidget  *child,
 701                                 gint        response_id)
 702 {
 703   ResponseData *ad;
 704   guint signal_id;
 705
 706   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 707   g_return_if_fail (GTK_IS_WIDGET (child));
 708
 709   ad = get_response_data (child, TRUE);
 710
 711   ad->response_id = response_id;
 712
 713   if (GTK_IS_BUTTON (child))
 714     signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
 715   else
 716     signal_id = GTK_WIDGET_GET_CLASS (child)->activate_signal;
 717
 718   if (signal_id)
 719     {
 720       GClosure *closure;
 721
 722       closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
 723                                        G_OBJECT (info_bar));
 724       g_signal_connect_closure_by_id (child, signal_id, 0, closure, FALSE);
 725     }
 726   else
 727     g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkInfoBar");
 728
 729   gtk_box_pack_end (GTK_BOX (info_bar->priv->action_area),
 730                     child, FALSE, FALSE, 0);
 731   if (response_id == GTK_RESPONSE_HELP)
 732     gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
 733                                         child, TRUE);
 734 }
 735
 736 /**
 737  * gtk_info_bar_get_action_area:
 738  * @info_bar: a #GtkInfoBar
 739  *
 740  * Returns the action area of @info_bar.
 741  *
 742  * Returns: (transfer none): the action area
 743  *
 744  * Since: 2.18
 745  */
 746 GtkWidget*
 747 gtk_info_bar_get_action_area (GtkInfoBar *info_bar)
 748 {
 749   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 750
 751   return info_bar->priv->action_area;
 752 }
 753
 754 /**
 755  * gtk_info_bar_get_content_area:
 756  * @info_bar: a #GtkInfoBar
 757  *
 758  * Returns the content area of @info_bar.
 759  *
 760  * Returns: (transfer none): the content area
 761  *
 762  * Since: 2.18
 763  */
 764 GtkWidget*
 765 gtk_info_bar_get_content_area (GtkInfoBar *info_bar)
 766 {
 767   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 768
 769   return info_bar->priv->content_area;
 770 }
 771
 772 /**
 773  * gtk_info_bar_add_button:
 774  * @info_bar: a #GtkInfoBar
 775  * @button_text: text of button, or stock ID
 776  * @response_id: response ID for the button
 777  *
 778  * Adds a button with the given text (or a stock button, if button_text
 779  * is a stock ID) and sets things up so that clicking the button will emit
 780  * the "response" signal with the given response_id. The button is appended
 781  * to the end of the info bars's action area. The button widget is
 782  * returned, but usually you don't need it.
 783  *
 784  * Returns: (transfer none): the button widget that was added
 785  *
 786  * Since: 2.18
 787  */
 788 GtkWidget*
 789 gtk_info_bar_add_button (GtkInfoBar  *info_bar,
 790                          const gchar *button_text,
 791                          gint         response_id)
 792 {
 793   GtkWidget *button;
 794
 795   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 796   g_return_val_if_fail (button_text != NULL, NULL);
 797
 798   button = gtk_button_new_from_stock (button_text);
 799
 800   gtk_widget_set_can_default (button, TRUE);
 801
 802   gtk_widget_show (button);
 803
 804   gtk_info_bar_add_action_widget (info_bar, button, response_id);
 805
 806   return button;
 807 }
 808
 809 static void
 810 add_buttons_valist (GtkInfoBar  *info_bar,
 811                     const gchar *first_button_text,
 812                     va_list      args)
 813 {
 814   const gchar* text;
 815   gint response_id;
 816
 817   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 818
 819   if (first_button_text == NULL)
 820     return;
 821
 822   text = first_button_text;
 823   response_id = va_arg (args, gint);
 824
 825   while (text != NULL)
 826     {
 827       gtk_info_bar_add_button (info_bar, text, response_id);
 828
 829       text = va_arg (args, gchar*);
 830       if (text == NULL)
 831         break;
 832
 833       response_id = va_arg (args, int);
 834     }
 835 }
 836
 837 /**
 838  * gtk_info_bar_add_buttons:
 839  * @info_bar: a #GtkInfoBar
 840  * @first_button_text: button text or stock ID
 841  * @...: response ID for first button, then more text-response_id pairs,
 842  *     ending with %NULL
 843  *
 844  * Adds more buttons, same as calling gtk_info_bar_add_button()
 845  * repeatedly. The variable argument list should be %NULL-terminated
 846  * as with gtk_info_bar_new_with_buttons(). Each button must have both
 847  * text and response ID.
 848  *
 849  * Since: 2.18
 850  */
 851 void
 852 gtk_info_bar_add_buttons (GtkInfoBar  *info_bar,
 853                           const gchar *first_button_text,
 854                           ...)
 855 {
 856   va_list args;
 857
 858   va_start (args, first_button_text);
 859   add_buttons_valist (info_bar, first_button_text, args);
 860   va_end (args);
 861 }
 862
 863 /**
 864  * gtk_info_bar_new:
 865  *
 866  * Creates a new #GtkInfoBar object.
 867  *
 868  * Returns: a new #GtkInfoBar object
 869  *
 870  * Since: 2.18
 871  */
 872 GtkWidget *
 873 gtk_info_bar_new (void)
 874 {
 875    return g_object_new (GTK_TYPE_INFO_BAR, NULL);
 876 }
 877
 878 /**
 879  * gtk_info_bar_new_with_buttons:
 880  * @first_button_text: (allow-none): stock ID or text to go in first button, or %NULL
 881  * @...: response ID for first button, then additional buttons, ending
 882  *    with %NULL
 883  *
 884  * Creates a new #GtkInfoBar with buttons. Button text/response ID
 885  * pairs should be listed, with a %NULL pointer ending the list.
 886  * Button text can be either a stock ID such as %GTK_STOCK_OK, or
 887  * some arbitrary text. A response ID can be any positive number,
 888  * or one of the values in the #GtkResponseType enumeration. If the
 889  * user clicks one of these dialog buttons, GtkInfoBar will emit
 890  * the "response" signal with the corresponding response ID.
 891  *
 892  * Returns: a new #GtkInfoBar
 893  */
 894 GtkWidget*
 895 gtk_info_bar_new_with_buttons (const gchar *first_button_text,
 896                                ...)
 897 {
 898   GtkInfoBar *info_bar;
 899   va_list args;
 900
 901   info_bar = GTK_INFO_BAR (gtk_info_bar_new ());
 902
 903   va_start (args, first_button_text);
 904   add_buttons_valist (info_bar, first_button_text, args);
 905   va_end (args);
 906
 907   return GTK_WIDGET (info_bar);
 908 }
 909
 910 /**
 911  * gtk_info_bar_set_response_sensitive:
 912  * @info_bar: a #GtkInfoBar
 913  * @response_id: a response ID
 914  * @setting: TRUE for sensitive
 915  *
 916  * Calls gtk_widget_set_sensitive (widget, setting) for each
 917  * widget in the info bars's action area with the given response_id.
 918  * A convenient way to sensitize/desensitize dialog buttons.
 919  *
 920  * Since: 2.18
 921  */
 922 void
 923 gtk_info_bar_set_response_sensitive (GtkInfoBar *info_bar,
 924                                      gint        response_id,
 925                                      gboolean    setting)
 926 {
 927   GList *children, *list;
 928
 929   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 930
 931   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 932
 933   for (list = children; list; list = list->next)
 934     {
 935       GtkWidget *widget = list->data;
 936       ResponseData *rd = get_response_data (widget, FALSE);
 937
 938       if (rd && rd->response_id == response_id)
 939         gtk_widget_set_sensitive (widget, setting);
 940     }
 941
 942   g_list_free (children);
 943 }
 944
 945 /**
 946  * gtk_info_bar_set_default_response:
 947  * @info_bar: a #GtkInfoBar
 948  * @response_id: a response ID
 949  *
 950  * Sets the last widget in the info bar's action area with
 951  * the given response_id as the default widget for the dialog.
 952  * Pressing "Enter" normally activates the default widget.
 953  *
 954  * Note that this function currently requires @info_bar to
 955  * be added to a widget hierarchy.
 956  *
 957  * Since: 2.18
 958  */
 959 void
 960 gtk_info_bar_set_default_response (GtkInfoBar *info_bar,
 961                                    gint        response_id)
 962 {
 963   GList *children, *list;
 964
 965   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 966
 967   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 968
 969   for (list = children; list; list = list->next)
 970     {
 971       GtkWidget *widget = list->data;
 972       ResponseData *rd = get_response_data (widget, FALSE);
 973
 974       if (rd && rd->response_id == response_id)
 975         gtk_widget_grab_default (widget);
 976     }
 977
 978   g_list_free (children);
 979 }
 980
 981 /**
 982  * gtk_info_bar_response:
 983  * @info_bar: a #GtkInfoBar
 984  * @response_id: a response ID
 985  *
 986  * Emits the 'response' signal with the given @response_id.
 987  *
 988  * Since: 2.18
 989  */
 990 void
 991 gtk_info_bar_response (GtkInfoBar *info_bar,
 992                        gint        response_id)
 993 {
 994   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 995
 996   g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
 997 }
 998
 999 typedef struct
1000 {
1001   gchar *widget_name;
1002   gchar *response_id;
1003 } ActionWidgetInfo;
1004
1005 typedef struct
1006 {
1007   GtkInfoBar *info_bar;
1008   GtkBuilder *builder;
1009   GSList *items;
1010   gchar *response;
1011 } ActionWidgetsSubParserData;
1012
1013 static void
1014 attributes_start_element (GMarkupParseContext  *context,
1015                           const gchar          *element_name,
1016                           const gchar         **names,
1017                           const gchar         **values,
1018                           gpointer              user_data,
1019                           GError              **error)
1020 {
1021   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1022   guint i;
1023
1024   if (strcmp (element_name, "action-widget") == 0)
1025     {
1026       for (i = 0; names[i]; i++)
1027         if (strcmp (names[i], "response") == 0)
1028           parser_data->response = g_strdup (values[i]);
1029     }
1030   else if (strcmp (element_name, "action-widgets") == 0)
1031     return;
1032   else
1033     g_warning ("Unsupported tag for GtkInfoBar: %s\n", element_name);
1034 }
1035
1036 static void
1037 attributes_text_element (GMarkupParseContext  *context,
1038                          const gchar          *text,
1039                          gsize                 text_len,
1040                          gpointer              user_data,
1041                          GError              **error)
1042 {
1043   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1044   ActionWidgetInfo *item;
1045
1046   if (!parser_data->response)
1047     return;
1048
1049   item = g_new (ActionWidgetInfo, 1);
1050   item->widget_name = g_strndup (text, text_len);
1051   item->response_id = parser_data->response;
1052   parser_data->items = g_slist_prepend (parser_data->items, item);
1053   parser_data->response = NULL;
1054 }
1055
1056 static const GMarkupParser attributes_parser =
1057 {
1058   attributes_start_element,
1059   NULL,
1060   attributes_text_element,
1061 };
1062
1063 gboolean
1064 gtk_info_bar_buildable_custom_tag_start (GtkBuildable  *buildable,
1065                                          GtkBuilder    *builder,
1066                                          GObject       *child,
1067                                          const gchar   *tagname,
1068                                          GMarkupParser *parser,
1069                                          gpointer      *data)
1070 {
1071   ActionWidgetsSubParserData *parser_data;
1072
1073   if (child)
1074     return FALSE;
1075
1076   if (strcmp (tagname, "action-widgets") == 0)
1077     {
1078       parser_data = g_slice_new0 (ActionWidgetsSubParserData);
1079       parser_data->info_bar = GTK_INFO_BAR (buildable);
1080       parser_data->items = NULL;
1081
1082       *parser = attributes_parser;
1083       *data = parser_data;
1084       return TRUE;
1085     }
1086
1087   return parent_buildable_iface->custom_tag_start (buildable, builder, child,
1088                                                    tagname, parser, data);
1089 }
1090
1091 static void
1092 gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
1093                                         GtkBuilder   *builder,
1094                                         GObject      *child,
1095                                         const gchar  *tagname,
1096                                         gpointer      user_data)
1097 {
1098   GSList *l;
1099   ActionWidgetsSubParserData *parser_data;
1100   GObject *object;
1101   GtkInfoBar *info_bar;
1102   ResponseData *ad;
1103   guint signal_id;
1104
1105   if (strcmp (tagname, "action-widgets"))
1106     {
1107       parent_buildable_iface->custom_finished (buildable, builder, child,
1108                                                tagname, user_data);
1109       return;
1110     }
1111
1112   info_bar = GTK_INFO_BAR (buildable);
1113   parser_data = (ActionWidgetsSubParserData*)user_data;
1114   parser_data->items = g_slist_reverse (parser_data->items);
1115
1116   for (l = parser_data->items; l; l = l->next)
1117     {
1118       ActionWidgetInfo *item = l->data;
1119
1120       object = gtk_builder_get_object (builder, item->widget_name);
1121       if (!object)
1122         {
1123           g_warning ("Unknown object %s specified in action-widgets of %s",
1124                      item->widget_name,
1125                      gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
1126           continue;
1127         }
1128
1129       ad = get_response_data (GTK_WIDGET (object), TRUE);
1130       ad->response_id = atoi (item->response_id);
1131
1132       if (GTK_IS_BUTTON (object))
1133         signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
1134       else
1135         signal_id = GTK_WIDGET_GET_CLASS (object)->activate_signal;
1136
1137       if (signal_id)
1138         {
1139           GClosure *closure;
1140
1141           closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
1142                                            G_OBJECT (info_bar));
1143           g_signal_connect_closure_by_id (object,
1144                                           signal_id,
1145                                           0,
1146                                           closure,
1147                                           FALSE);
1148         }
1149
1150       if (ad->response_id == GTK_RESPONSE_HELP)
1151         gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
1152                                             GTK_WIDGET (object), TRUE);
1153
1154       g_free (item->widget_name);
1155       g_free (item->response_id);
1156       g_free (item);
1157     }
1158   g_slist_free (parser_data->items);
1159   g_slice_free (ActionWidgetsSubParserData, parser_data);
1160 }
1161
1162 /**
1163  * gtk_info_bar_set_message_type:
1164  * @info_bar: a #GtkInfoBar
1165  * @message_type: a #GtkMessageType
1166  *
1167  * Sets the message type of the message area.
1168  * GTK+ uses this type to determine what color to use
1169  * when drawing the message area.
1170  *
1171  * Since: 2.18
1172  */
1173 void
1174 gtk_info_bar_set_message_type (GtkInfoBar     *info_bar,
1175                                GtkMessageType  message_type)
1176 {
1177   GtkInfoBarPrivate *priv;
1178   AtkObject *atk_obj;
1179
1180   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
1181
1182   priv = info_bar->priv;
1183
1184   if (priv->message_type != message_type)
1185     {
1186       priv->message_type = message_type;
1187
1188       gtk_info_bar_update_colors (info_bar);
1189       gtk_widget_queue_draw (GTK_WIDGET (info_bar));
1190
1191       atk_obj = gtk_widget_get_accessible (GTK_WIDGET (info_bar));
1192       if (GTK_IS_ACCESSIBLE (atk_obj))
1193         {
1194           GtkStockItem item;
1195           const char *stock_id = NULL;
1196
1197           atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
1198
1199           switch (message_type)
1200             {
1201             case GTK_MESSAGE_INFO:
1202               stock_id = GTK_STOCK_DIALOG_INFO;
1203               break;
1204
1205             case GTK_MESSAGE_QUESTION:
1206               stock_id = GTK_STOCK_DIALOG_QUESTION;
1207               break;
1208
1209             case GTK_MESSAGE_WARNING:
1210               stock_id = GTK_STOCK_DIALOG_WARNING;
1211               break;
1212
1213             case GTK_MESSAGE_ERROR:
1214               stock_id = GTK_STOCK_DIALOG_ERROR;
1215               break;
1216
1217             case GTK_MESSAGE_OTHER:
1218               break;
1219
1220             default:
1221               g_warning ("Unknown GtkMessageType %u", message_type);
1222               break;
1223             }
1224
1225           if (stock_id)
1226             {
1227               gtk_stock_lookup (stock_id, &item);
1228               atk_object_set_name (atk_obj, item.label);
1229             }
1230         }
1231
1232       g_object_notify (G_OBJECT (info_bar), "message-type");
1233     }
1234 }
1235
1236 /**
1237  * gtk_info_bar_get_message_type:
1238  * @info_bar: a #GtkInfoBar
1239  *
1240  * Returns the message type of the message area.
1241  *
1242  * Returns: the message type of the message area.
1243  *
1244  * Since: 2.18
1245  */
1246 GtkMessageType
1247 gtk_info_bar_get_message_type (GtkInfoBar *info_bar)
1248 {
1249   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
1250
1251   return info_bar->priv->message_type;
1252 }