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_draw         (GtkWidget      *widget,
 163                                            cairo_t        *cr);
 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_draw (GtkWidget      *widget,
 300                    cairo_t        *cr)
 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       const char *detail;
 314
 315       detail = type_detail[priv->message_type];
 316
 317       gtk_paint_box (gtk_widget_get_style (widget),
 318                      cr,
 319                      GTK_STATE_NORMAL,
 320                      GTK_SHADOW_OUT,
 321                      widget,
 322                      detail,
 323                      0, 0,
 324                      gtk_widget_get_allocated_width (widget),
 325                      gtk_widget_get_allocated_height (widget));
 326     }
 327
 328   if (GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->draw)
 329     GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->draw (widget, cr);
 330
 331   return FALSE;
 332 }
 333
 334 static void
 335 gtk_info_bar_class_init (GtkInfoBarClass *klass)
 336 {
 337   GtkWidgetClass *widget_class;
 338   GObjectClass *object_class;
 339   GtkBindingSet *binding_set;
 340
 341   widget_class = GTK_WIDGET_CLASS (klass);
 342   object_class = G_OBJECT_CLASS (klass);
 343
 344   object_class->get_property = gtk_info_bar_get_property;
 345   object_class->set_property = gtk_info_bar_set_property;
 346   object_class->finalize = gtk_info_bar_finalize;
 347
 348   widget_class->style_set = gtk_info_bar_style_set;
 349   widget_class->draw = gtk_info_bar_draw;
 350
 351   klass->close = gtk_info_bar_close;
 352
 353   /**
 354    * GtkInfoBar:message-type:
 355    *
 356    * The type of the message.
 357    *
 358    * The type is used to determine the colors to use in the info bar.
 359    * The following symbolic color names can by used to customize
 360    * these colors:
 361    * "info_fg_color", "info_bg_color",
 362    * "warning_fg_color", "warning_bg_color",
 363    * "question_fg_color", "question_bg_color",
 364    * "error_fg_color", "error_bg_color".
 365    * "other_fg_color", "other_bg_color".
 366    *
 367    * If the type is #GTK_MESSAGE_OTHER, no info bar is painted but the
 368    * colors are still set.
 369    *
 370    * Since: 2.18
 371    */
 372   g_object_class_install_property (object_class,
 373                                    PROP_MESSAGE_TYPE,
 374                                    g_param_spec_enum ("message-type",
 375                                                       P_("Message Type"),
 376                                                       P_("The type of message"),
 377                                                       GTK_TYPE_MESSAGE_TYPE,
 378                                                       GTK_MESSAGE_INFO,
 379                                                       GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 380   /**
 381    * GtkInfoBar::response:
 382    * @info_bar: the object on which the signal is emitted
 383    * @response_id: the response ID
 384    *
 385    * Emitted when an action widget is clicked or the application programmer
 386    * calls gtk_dialog_response(). The @response_id depends on which action
 387    * widget was clicked.
 388    *
 389    * Since: 2.18
 390    */
 391   signals[RESPONSE] = g_signal_new (I_("response"),
 392                                     G_OBJECT_CLASS_TYPE (klass),
 393                                     G_SIGNAL_RUN_LAST,
 394                                     G_STRUCT_OFFSET (GtkInfoBarClass, response),
 395                                     NULL, NULL,
 396                                     g_cclosure_marshal_VOID__INT,
 397                                     G_TYPE_NONE, 1,
 398                                     G_TYPE_INT);
 399
 400   /**
 401    * GtkInfoBar::close:
 402    *
 403    * The ::close signal is a
 404    * <link linkend="keybinding-signals">keybinding signal</link>
 405    * which gets emitted when the user uses a keybinding to dismiss
 406    * the info bar.
 407    *
 408    * The default binding for this signal is the Escape key.
 409    *
 410    * Since: 2.18
 411    */
 412   signals[CLOSE] =  g_signal_new (I_("close"),
 413                                   G_OBJECT_CLASS_TYPE (klass),
 414                                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 415                                   G_STRUCT_OFFSET (GtkInfoBarClass, close),
 416                                   NULL, NULL,
 417                                   g_cclosure_marshal_VOID__VOID,
 418                                   G_TYPE_NONE, 0);
 419
 420   /**
 421    * GtkInfoBar:content-area-border:
 422    *
 423    * The width of the border around the content
 424    * content area of the info bar.
 425    *
 426    * Since: 2.18
 427    */
 428   gtk_widget_class_install_style_property (widget_class,
 429                                            g_param_spec_int ("content-area-border",
 430                                                              P_("Content area border"),
 431                                                              P_("Width of border around the content area"),
 432                                                              0,
 433                                                              G_MAXINT,
 434                                                              8,
 435                                                              GTK_PARAM_READABLE));
 436
 437   /**
 438    * GtkInfoBar:content-area-spacing:
 439    *
 440    * The default spacing used between elements of the
 441    * content area of the info bar.
 442    *
 443    * Since: 2.18
 444    */
 445   gtk_widget_class_install_style_property (widget_class,
 446                                            g_param_spec_int ("content-area-spacing",
 447                                                              P_("Content area spacing"),
 448                                                              P_("Spacing between elements of the area"),
 449                                                              0,
 450                                                              G_MAXINT,
 451                                                              16,
 452                                                              GTK_PARAM_READABLE));
 453
 454   /**
 455    * GtkInfoBar:button-spacing:
 456    *
 457    * Spacing between buttons in the action area of the info bar.
 458    *
 459    * Since: 2.18
 460    */
 461   gtk_widget_class_install_style_property (widget_class,
 462                                            g_param_spec_int ("button-spacing",
 463                                                              P_("Button spacing"),
 464                                                              P_("Spacing between buttons"),
 465                                                              0,
 466                                                              G_MAXINT,
 467                                                              6,
 468                                                              GTK_PARAM_READABLE));
 469
 470   /**
 471    * GtkInfoBar:action-area-border:
 472    *
 473    * Width of the border around the action area of the info bar.
 474    *
 475    * Since: 2.18
 476    */
 477   gtk_widget_class_install_style_property (widget_class,
 478                                            g_param_spec_int ("action-area-border",
 479                                                              P_("Action area border"),
 480                                                              P_("Width of border around the action area"),
 481                                                              0,
 482                                                              G_MAXINT,
 483                                                              5,
 484                                                              GTK_PARAM_READABLE));
 485
 486   binding_set = gtk_binding_set_by_class (klass);
 487
 488   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0, "close", 0);
 489
 490   g_type_class_add_private (object_class, sizeof (GtkInfoBarPrivate));
 491 }
 492
 493 static void
 494 gtk_info_bar_update_colors (GtkInfoBar *info_bar)
 495 {
 496   GtkWidget *widget = GTK_WIDGET (info_bar);
 497   GtkInfoBarPrivate *priv = info_bar->priv;
 498   GdkRGBA info_default_border_color     = { 0.71, 0.67, 0.61, 1.0 };
 499   GdkRGBA info_default_fill_color       = { 0.99, 0.99, 0.74, 1.0 };
 500   GdkRGBA warning_default_border_color  = { 0.68, 0.47, 0.16, 1.0 };
 501   GdkRGBA warning_default_fill_color    = { 0.98, 0.68, 0.24, 1.0 };
 502   GdkRGBA question_default_border_color = { 0.38, 0.48, 0.84, 1.0 };
 503   GdkRGBA question_default_fill_color   = { 0.54, 0.68, 0.83, 1.0 };
 504   GdkRGBA error_default_border_color    = { 0.65, 0.15, 0.15, 1.0 };
 505   GdkRGBA error_default_fill_color      = { 0.93, 0.21, 0.21, 1.0 };
 506   GdkRGBA other_default_border_color    = { 0.71, 0.67, 0.61, 1.0 };
 507   GdkRGBA other_default_fill_color      = { 0.99, 0.99, 0.74, 1.0 };
 508   GdkRGBA *fg, *bg;
 509   GdkRGBA sym_fg, sym_bg;
 510   GdkRGBA *color, *bg_color;
 511   GtkStyleContext *context;
 512
 513   const char* fg_color_name[] = {
 514     "info_fg_color",
 515     "warning_fg_color",
 516     "question_fg_color",
 517     "error_fg_color",
 518     "other_fg_color"
 519   };
 520   const char* bg_color_name[] = {
 521     "info_bg_color",
 522     "warning_bg_color",
 523     "question_bg_color",
 524     "error_bg_color",
 525     "other_bg_color"
 526   };
 527
 528   context = gtk_widget_get_style_context (widget);
 529
 530   if (gtk_style_context_lookup_color (context, fg_color_name[priv->message_type], &sym_fg) &&
 531       gtk_style_context_lookup_color (context, bg_color_name[priv->message_type], &sym_bg))
 532     {
 533       fg = &sym_fg;
 534       bg = &sym_bg;
 535     }
 536   else
 537     {
 538       switch (priv->message_type)
 539         {
 540         case GTK_MESSAGE_INFO:
 541           fg = &info_default_border_color;
 542           bg = &info_default_fill_color;
 543           break;
 544
 545         case GTK_MESSAGE_WARNING:
 546           fg = &warning_default_border_color;
 547           bg = &warning_default_fill_color;
 548           break;
 549
 550         case GTK_MESSAGE_QUESTION:
 551           fg = &question_default_border_color;
 552           bg = &question_default_fill_color;
 553           break;
 554
 555         case GTK_MESSAGE_ERROR:
 556           fg = &error_default_border_color;
 557           bg = &error_default_fill_color;
 558           break;
 559
 560         case GTK_MESSAGE_OTHER:
 561           fg = &other_default_border_color;
 562           bg = &other_default_fill_color;
 563           break;
 564
 565         default:
 566           g_assert_not_reached();
 567           fg = NULL;
 568           bg = NULL;
 569         }
 570     }
 571
 572   gtk_style_context_get (context, 0,
 573                          "color", &color,
 574                          "background-color", &bg_color,
 575                          NULL);
 576   if (!gdk_rgba_equal (bg_color, bg))
 577     gtk_widget_override_background_color (widget, 0, bg);
 578   if (!gdk_rgba_equal (color, fg))
 579     gtk_widget_override_color (widget, 0, fg);
 580
 581   gdk_rgba_free (color);
 582   gdk_rgba_free (bg_color);
 583 }
 584
 585 static void
 586 gtk_info_bar_style_set (GtkWidget *widget,
 587                         GtkStyle  *prev_style)
 588 {
 589   GtkInfoBar *info_bar = GTK_INFO_BAR (widget);
 590   gint button_spacing;
 591   gint action_area_border;
 592   gint content_area_spacing;
 593   gint content_area_border;
 594
 595   gtk_widget_style_get (widget,
 596                         "button-spacing", &button_spacing,
 597                         "action-area-border", &action_area_border,
 598                         "content-area-spacing", &content_area_spacing,
 599                         "content-area-border", &content_area_border,
 600                         NULL);
 601
 602   gtk_box_set_spacing (GTK_BOX (info_bar->priv->action_area), button_spacing);
 603   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->action_area),
 604                                   action_area_border);
 605   gtk_box_set_spacing (GTK_BOX (info_bar->priv->content_area), content_area_spacing);
 606   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->content_area),
 607                                   content_area_border);
 608
 609   gtk_info_bar_update_colors (info_bar);
 610 }
 611
 612 static void
 613 gtk_info_bar_init (GtkInfoBar *info_bar)
 614 {
 615   GtkWidget *content_area;
 616   GtkWidget *action_area;
 617
 618   gtk_widget_push_composite_child ();
 619
 620   info_bar->priv = G_TYPE_INSTANCE_GET_PRIVATE (info_bar,
 621                                                 GTK_TYPE_INFO_BAR,
 622                                                 GtkInfoBarPrivate);
 623
 624   content_area = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
 625   gtk_widget_show (content_area);
 626   gtk_box_pack_start (GTK_BOX (info_bar), content_area, TRUE, TRUE, 0);
 627
 628   action_area = gtk_button_box_new (GTK_ORIENTATION_VERTICAL);
 629   gtk_widget_show (action_area);
 630   gtk_button_box_set_layout (GTK_BUTTON_BOX (action_area), GTK_BUTTONBOX_END);
 631   gtk_box_pack_start (GTK_BOX (info_bar), action_area, FALSE, TRUE, 0);
 632
 633   gtk_widget_set_app_paintable (GTK_WIDGET (info_bar), TRUE);
 634   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (info_bar), TRUE);
 635
 636   info_bar->priv->content_area = content_area;
 637   info_bar->priv->action_area = action_area;
 638
 639   gtk_widget_pop_composite_child ();
 640 }
 641
 642 static GtkBuildableIface *parent_buildable_iface;
 643
 644 static void
 645 gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface)
 646 {
 647   parent_buildable_iface = g_type_interface_peek_parent (iface);
 648   iface->get_internal_child = gtk_info_bar_buildable_get_internal_child;
 649   iface->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
 650   iface->custom_finished = gtk_info_bar_buildable_custom_finished;
 651 }
 652
 653 static GObject *
 654 gtk_info_bar_buildable_get_internal_child (GtkBuildable *buildable,
 655                                            GtkBuilder   *builder,
 656                                            const gchar  *childname)
 657 {
 658   if (strcmp (childname, "content_area") == 0)
 659     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->content_area);
 660   else if (strcmp (childname, "action_area") == 0)
 661     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->action_area);
 662
 663   return parent_buildable_iface->get_internal_child (buildable,
 664                                                      builder,
 665                                                      childname);
 666 }
 667
 668 static gint
 669 get_response_for_widget (GtkInfoBar *info_bar,
 670                          GtkWidget  *widget)
 671 {
 672   ResponseData *rd;
 673
 674   rd = get_response_data (widget, FALSE);
 675   if (!rd)
 676     return GTK_RESPONSE_NONE;
 677   else
 678     return rd->response_id;
 679 }
 680
 681 static void
 682 action_widget_activated (GtkWidget  *widget,
 683                          GtkInfoBar *info_bar)
 684 {
 685   gint response_id;
 686
 687   response_id = get_response_for_widget (info_bar, widget);
 688   gtk_info_bar_response (info_bar, response_id);
 689 }
 690
 691 /**
 692  * gtk_info_bar_add_action_widget:
 693  * @info_bar: a #GtkInfoBar
 694  * @child: an activatable widget
 695  * @response_id: response ID for @child
 696  *
 697  * Add an activatable widget to the action area of a #GtkInfoBar,
 698  * connecting a signal handler that will emit the #GtkInfoBar::response
 699  * signal on the message area when the widget is activated. The widget
 700  * is appended to the end of the message areas action area.
 701  *
 702  * Since: 2.18
 703  */
 704 void
 705 gtk_info_bar_add_action_widget (GtkInfoBar *info_bar,
 706                                 GtkWidget  *child,
 707                                 gint        response_id)
 708 {
 709   ResponseData *ad;
 710   guint signal_id;
 711
 712   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 713   g_return_if_fail (GTK_IS_WIDGET (child));
 714
 715   ad = get_response_data (child, TRUE);
 716
 717   ad->response_id = response_id;
 718
 719   if (GTK_IS_BUTTON (child))
 720     signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
 721   else
 722     signal_id = GTK_WIDGET_GET_CLASS (child)->activate_signal;
 723
 724   if (signal_id)
 725     {
 726       GClosure *closure;
 727
 728       closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
 729                                        G_OBJECT (info_bar));
 730       g_signal_connect_closure_by_id (child, signal_id, 0, closure, FALSE);
 731     }
 732   else
 733     g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkInfoBar");
 734
 735   gtk_box_pack_end (GTK_BOX (info_bar->priv->action_area),
 736                     child, FALSE, FALSE, 0);
 737   if (response_id == GTK_RESPONSE_HELP)
 738     gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
 739                                         child, TRUE);
 740 }
 741
 742 /**
 743  * gtk_info_bar_get_action_area:
 744  * @info_bar: a #GtkInfoBar
 745  *
 746  * Returns the action area of @info_bar.
 747  *
 748  * Returns: (transfer none): the action area
 749  *
 750  * Since: 2.18
 751  */
 752 GtkWidget*
 753 gtk_info_bar_get_action_area (GtkInfoBar *info_bar)
 754 {
 755   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 756
 757   return info_bar->priv->action_area;
 758 }
 759
 760 /**
 761  * gtk_info_bar_get_content_area:
 762  * @info_bar: a #GtkInfoBar
 763  *
 764  * Returns the content area of @info_bar.
 765  *
 766  * Returns: (transfer none): the content area
 767  *
 768  * Since: 2.18
 769  */
 770 GtkWidget*
 771 gtk_info_bar_get_content_area (GtkInfoBar *info_bar)
 772 {
 773   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 774
 775   return info_bar->priv->content_area;
 776 }
 777
 778 /**
 779  * gtk_info_bar_add_button:
 780  * @info_bar: a #GtkInfoBar
 781  * @button_text: text of button, or stock ID
 782  * @response_id: response ID for the button
 783  *
 784  * Adds a button with the given text (or a stock button, if button_text
 785  * is a stock ID) and sets things up so that clicking the button will emit
 786  * the "response" signal with the given response_id. The button is appended
 787  * to the end of the info bars's action area. The button widget is
 788  * returned, but usually you don't need it.
 789  *
 790  * Returns: (transfer none): the button widget that was added
 791  *
 792  * Since: 2.18
 793  */
 794 GtkWidget*
 795 gtk_info_bar_add_button (GtkInfoBar  *info_bar,
 796                          const gchar *button_text,
 797                          gint         response_id)
 798 {
 799   GtkWidget *button;
 800
 801   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 802   g_return_val_if_fail (button_text != NULL, NULL);
 803
 804   button = gtk_button_new_from_stock (button_text);
 805
 806   gtk_widget_set_can_default (button, TRUE);
 807
 808   gtk_widget_show (button);
 809
 810   gtk_info_bar_add_action_widget (info_bar, button, response_id);
 811
 812   return button;
 813 }
 814
 815 static void
 816 add_buttons_valist (GtkInfoBar  *info_bar,
 817                     const gchar *first_button_text,
 818                     va_list      args)
 819 {
 820   const gchar* text;
 821   gint response_id;
 822
 823   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 824
 825   if (first_button_text == NULL)
 826     return;
 827
 828   text = first_button_text;
 829   response_id = va_arg (args, gint);
 830
 831   while (text != NULL)
 832     {
 833       gtk_info_bar_add_button (info_bar, text, response_id);
 834
 835       text = va_arg (args, gchar*);
 836       if (text == NULL)
 837         break;
 838
 839       response_id = va_arg (args, int);
 840     }
 841 }
 842
 843 /**
 844  * gtk_info_bar_add_buttons:
 845  * @info_bar: a #GtkInfoBar
 846  * @first_button_text: button text or stock ID
 847  * @...: response ID for first button, then more text-response_id pairs,
 848  *     ending with %NULL
 849  *
 850  * Adds more buttons, same as calling gtk_info_bar_add_button()
 851  * repeatedly. The variable argument list should be %NULL-terminated
 852  * as with gtk_info_bar_new_with_buttons(). Each button must have both
 853  * text and response ID.
 854  *
 855  * Since: 2.18
 856  */
 857 void
 858 gtk_info_bar_add_buttons (GtkInfoBar  *info_bar,
 859                           const gchar *first_button_text,
 860                           ...)
 861 {
 862   va_list args;
 863
 864   va_start (args, first_button_text);
 865   add_buttons_valist (info_bar, first_button_text, args);
 866   va_end (args);
 867 }
 868
 869 /**
 870  * gtk_info_bar_new:
 871  *
 872  * Creates a new #GtkInfoBar object.
 873  *
 874  * Returns: a new #GtkInfoBar object
 875  *
 876  * Since: 2.18
 877  */
 878 GtkWidget *
 879 gtk_info_bar_new (void)
 880 {
 881    return g_object_new (GTK_TYPE_INFO_BAR, NULL);
 882 }
 883
 884 /**
 885  * gtk_info_bar_new_with_buttons:
 886  * @first_button_text: (allow-none): stock ID or text to go in first button, or %NULL
 887  * @...: response ID for first button, then additional buttons, ending
 888  *    with %NULL
 889  *
 890  * Creates a new #GtkInfoBar with buttons. Button text/response ID
 891  * pairs should be listed, with a %NULL pointer ending the list.
 892  * Button text can be either a stock ID such as %GTK_STOCK_OK, or
 893  * some arbitrary text. A response ID can be any positive number,
 894  * or one of the values in the #GtkResponseType enumeration. If the
 895  * user clicks one of these dialog buttons, GtkInfoBar will emit
 896  * the "response" signal with the corresponding response ID.
 897  *
 898  * Returns: a new #GtkInfoBar
 899  */
 900 GtkWidget*
 901 gtk_info_bar_new_with_buttons (const gchar *first_button_text,
 902                                ...)
 903 {
 904   GtkInfoBar *info_bar;
 905   va_list args;
 906
 907   info_bar = GTK_INFO_BAR (gtk_info_bar_new ());
 908
 909   va_start (args, first_button_text);
 910   add_buttons_valist (info_bar, first_button_text, args);
 911   va_end (args);
 912
 913   return GTK_WIDGET (info_bar);
 914 }
 915
 916 /**
 917  * gtk_info_bar_set_response_sensitive:
 918  * @info_bar: a #GtkInfoBar
 919  * @response_id: a response ID
 920  * @setting: TRUE for sensitive
 921  *
 922  * Calls gtk_widget_set_sensitive (widget, setting) for each
 923  * widget in the info bars's action area with the given response_id.
 924  * A convenient way to sensitize/desensitize dialog buttons.
 925  *
 926  * Since: 2.18
 927  */
 928 void
 929 gtk_info_bar_set_response_sensitive (GtkInfoBar *info_bar,
 930                                      gint        response_id,
 931                                      gboolean    setting)
 932 {
 933   GList *children, *list;
 934
 935   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 936
 937   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 938
 939   for (list = children; list; list = list->next)
 940     {
 941       GtkWidget *widget = list->data;
 942       ResponseData *rd = get_response_data (widget, FALSE);
 943
 944       if (rd && rd->response_id == response_id)
 945         gtk_widget_set_sensitive (widget, setting);
 946     }
 947
 948   g_list_free (children);
 949 }
 950
 951 /**
 952  * gtk_info_bar_set_default_response:
 953  * @info_bar: a #GtkInfoBar
 954  * @response_id: a response ID
 955  *
 956  * Sets the last widget in the info bar's action area with
 957  * the given response_id as the default widget for the dialog.
 958  * Pressing "Enter" normally activates the default widget.
 959  *
 960  * Note that this function currently requires @info_bar to
 961  * be added to a widget hierarchy.
 962  *
 963  * Since: 2.18
 964  */
 965 void
 966 gtk_info_bar_set_default_response (GtkInfoBar *info_bar,
 967                                    gint        response_id)
 968 {
 969   GList *children, *list;
 970
 971   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 972
 973   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 974
 975   for (list = children; list; list = list->next)
 976     {
 977       GtkWidget *widget = list->data;
 978       ResponseData *rd = get_response_data (widget, FALSE);
 979
 980       if (rd && rd->response_id == response_id)
 981         gtk_widget_grab_default (widget);
 982     }
 983
 984   g_list_free (children);
 985 }
 986
 987 /**
 988  * gtk_info_bar_response:
 989  * @info_bar: a #GtkInfoBar
 990  * @response_id: a response ID
 991  *
 992  * Emits the 'response' signal with the given @response_id.
 993  *
 994  * Since: 2.18
 995  */
 996 void
 997 gtk_info_bar_response (GtkInfoBar *info_bar,
 998                        gint        response_id)
 999 {
1000   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
1001
1002   g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
1003 }
1004
1005 typedef struct
1006 {
1007   gchar *widget_name;
1008   gchar *response_id;
1009 } ActionWidgetInfo;
1010
1011 typedef struct
1012 {
1013   GtkInfoBar *info_bar;
1014   GtkBuilder *builder;
1015   GSList *items;
1016   gchar *response;
1017 } ActionWidgetsSubParserData;
1018
1019 static void
1020 attributes_start_element (GMarkupParseContext  *context,
1021                           const gchar          *element_name,
1022                           const gchar         **names,
1023                           const gchar         **values,
1024                           gpointer              user_data,
1025                           GError              **error)
1026 {
1027   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1028   guint i;
1029
1030   if (strcmp (element_name, "action-widget") == 0)
1031     {
1032       for (i = 0; names[i]; i++)
1033         if (strcmp (names[i], "response") == 0)
1034           parser_data->response = g_strdup (values[i]);
1035     }
1036   else if (strcmp (element_name, "action-widgets") == 0)
1037     return;
1038   else
1039     g_warning ("Unsupported tag for GtkInfoBar: %s\n", element_name);
1040 }
1041
1042 static void
1043 attributes_text_element (GMarkupParseContext  *context,
1044                          const gchar          *text,
1045                          gsize                 text_len,
1046                          gpointer              user_data,
1047                          GError              **error)
1048 {
1049   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1050   ActionWidgetInfo *item;
1051
1052   if (!parser_data->response)
1053     return;
1054
1055   item = g_new (ActionWidgetInfo, 1);
1056   item->widget_name = g_strndup (text, text_len);
1057   item->response_id = parser_data->response;
1058   parser_data->items = g_slist_prepend (parser_data->items, item);
1059   parser_data->response = NULL;
1060 }
1061
1062 static const GMarkupParser attributes_parser =
1063 {
1064   attributes_start_element,
1065   NULL,
1066   attributes_text_element,
1067 };
1068
1069 gboolean
1070 gtk_info_bar_buildable_custom_tag_start (GtkBuildable  *buildable,
1071                                          GtkBuilder    *builder,
1072                                          GObject       *child,
1073                                          const gchar   *tagname,
1074                                          GMarkupParser *parser,
1075                                          gpointer      *data)
1076 {
1077   ActionWidgetsSubParserData *parser_data;
1078
1079   if (child)
1080     return FALSE;
1081
1082   if (strcmp (tagname, "action-widgets") == 0)
1083     {
1084       parser_data = g_slice_new0 (ActionWidgetsSubParserData);
1085       parser_data->info_bar = GTK_INFO_BAR (buildable);
1086       parser_data->items = NULL;
1087
1088       *parser = attributes_parser;
1089       *data = parser_data;
1090       return TRUE;
1091     }
1092
1093   return parent_buildable_iface->custom_tag_start (buildable, builder, child,
1094                                                    tagname, parser, data);
1095 }
1096
1097 static void
1098 gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
1099                                         GtkBuilder   *builder,
1100                                         GObject      *child,
1101                                         const gchar  *tagname,
1102                                         gpointer      user_data)
1103 {
1104   GSList *l;
1105   ActionWidgetsSubParserData *parser_data;
1106   GObject *object;
1107   GtkInfoBar *info_bar;
1108   ResponseData *ad;
1109   guint signal_id;
1110
1111   if (strcmp (tagname, "action-widgets"))
1112     {
1113       parent_buildable_iface->custom_finished (buildable, builder, child,
1114                                                tagname, user_data);
1115       return;
1116     }
1117
1118   info_bar = GTK_INFO_BAR (buildable);
1119   parser_data = (ActionWidgetsSubParserData*)user_data;
1120   parser_data->items = g_slist_reverse (parser_data->items);
1121
1122   for (l = parser_data->items; l; l = l->next)
1123     {
1124       ActionWidgetInfo *item = l->data;
1125
1126       object = gtk_builder_get_object (builder, item->widget_name);
1127       if (!object)
1128         {
1129           g_warning ("Unknown object %s specified in action-widgets of %s",
1130                      item->widget_name,
1131                      gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
1132           continue;
1133         }
1134
1135       ad = get_response_data (GTK_WIDGET (object), TRUE);
1136       ad->response_id = atoi (item->response_id);
1137
1138       if (GTK_IS_BUTTON (object))
1139         signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
1140       else
1141         signal_id = GTK_WIDGET_GET_CLASS (object)->activate_signal;
1142
1143       if (signal_id)
1144         {
1145           GClosure *closure;
1146
1147           closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
1148                                            G_OBJECT (info_bar));
1149           g_signal_connect_closure_by_id (object,
1150                                           signal_id,
1151                                           0,
1152                                           closure,
1153                                           FALSE);
1154         }
1155
1156       if (ad->response_id == GTK_RESPONSE_HELP)
1157         gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
1158                                             GTK_WIDGET (object), TRUE);
1159
1160       g_free (item->widget_name);
1161       g_free (item->response_id);
1162       g_free (item);
1163     }
1164   g_slist_free (parser_data->items);
1165   g_slice_free (ActionWidgetsSubParserData, parser_data);
1166 }
1167
1168 /**
1169  * gtk_info_bar_set_message_type:
1170  * @info_bar: a #GtkInfoBar
1171  * @message_type: a #GtkMessageType
1172  *
1173  * Sets the message type of the message area.
1174  * GTK+ uses this type to determine what color to use
1175  * when drawing the message area.
1176  *
1177  * Since: 2.18
1178  */
1179 void
1180 gtk_info_bar_set_message_type (GtkInfoBar     *info_bar,
1181                                GtkMessageType  message_type)
1182 {
1183   GtkInfoBarPrivate *priv;
1184   AtkObject *atk_obj;
1185
1186   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
1187
1188   priv = info_bar->priv;
1189
1190   if (priv->message_type != message_type)
1191     {
1192       priv->message_type = message_type;
1193
1194       gtk_info_bar_update_colors (info_bar);
1195       gtk_widget_queue_draw (GTK_WIDGET (info_bar));
1196
1197       atk_obj = gtk_widget_get_accessible (GTK_WIDGET (info_bar));
1198       if (GTK_IS_ACCESSIBLE (atk_obj))
1199         {
1200           GtkStockItem item;
1201           const char *stock_id = NULL;
1202
1203           atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
1204
1205           switch (message_type)
1206             {
1207             case GTK_MESSAGE_INFO:
1208               stock_id = GTK_STOCK_DIALOG_INFO;
1209               break;
1210
1211             case GTK_MESSAGE_QUESTION:
1212               stock_id = GTK_STOCK_DIALOG_QUESTION;
1213               break;
1214
1215             case GTK_MESSAGE_WARNING:
1216               stock_id = GTK_STOCK_DIALOG_WARNING;
1217               break;
1218
1219             case GTK_MESSAGE_ERROR:
1220               stock_id = GTK_STOCK_DIALOG_ERROR;
1221               break;
1222
1223             case GTK_MESSAGE_OTHER:
1224               break;
1225
1226             default:
1227               g_warning ("Unknown GtkMessageType %u", message_type);
1228               break;
1229             }
1230
1231           if (stock_id)
1232             {
1233               gtk_stock_lookup (stock_id, &item);
1234               atk_object_set_name (atk_obj, item.label);
1235             }
1236         }
1237
1238       g_object_notify (G_OBJECT (info_bar), "message-type");
1239     }
1240 }
1241
1242 /**
1243  * gtk_info_bar_get_message_type:
1244  * @info_bar: a #GtkInfoBar
1245  *
1246  * Returns the message type of the message area.
1247  *
1248  * Returns: the message type of the message area.
1249  *
1250  * Since: 2.18
1251  */
1252 GtkMessageType
1253 gtk_info_bar_get_message_type (GtkInfoBar *info_bar)
1254 {
1255   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
1256
1257   return info_bar->priv->message_type;
1258 }