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       const char *detail;
 314
 315       detail = type_detail[priv->message_type];
 316
 317       gtk_paint_box (widget->style,
 318                      widget->window,
 319                      GTK_STATE_NORMAL,
 320                      GTK_SHADOW_OUT,
 321                      NULL,
 322                      widget,
 323                      detail,
 324                      widget->allocation.x,
 325                      widget->allocation.y,
 326                      widget->allocation.width,
 327                      widget->allocation.height);
 328     }
 329
 330   if (GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event)
 331     GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event (widget, event);
 332
 333   return FALSE;
 334 }
 335
 336 static void
 337 gtk_info_bar_class_init (GtkInfoBarClass *klass)
 338 {
 339   GtkWidgetClass *widget_class;
 340   GObjectClass *object_class;
 341   GtkBindingSet *binding_set;
 342
 343   widget_class = GTK_WIDGET_CLASS (klass);
 344   object_class = G_OBJECT_CLASS (klass);
 345
 346   object_class->get_property = gtk_info_bar_get_property;
 347   object_class->set_property = gtk_info_bar_set_property;
 348   object_class->finalize = gtk_info_bar_finalize;
 349
 350   widget_class->style_set = gtk_info_bar_style_set;
 351   widget_class->expose_event = gtk_info_bar_expose;
 352
 353   klass->close = gtk_info_bar_close;
 354
 355   /**
 356    * GtkInfoBar:message-type:
 357    *
 358    * The type of the message.
 359    *
 360    * The type is used to determine the colors to use in the info bar.
 361    * The following symbolic color names can by used to customize
 362    * these colors:
 363    * "info_fg_color", "info_bg_color",
 364    * "warning_fg_color", "warning_bg_color",
 365    * "question_fg_color", "question_bg_color",
 366    * "error_fg_color", "error_bg_color".
 367    * "other_fg_color", "other_bg_color".
 368    *
 369    * If the type is #GTK_MESSAGE_OTHER, no info bar is painted but the
 370    * colors are still set.
 371    *
 372    * Since: 2.18
 373    */
 374   g_object_class_install_property (object_class,
 375                                    PROP_MESSAGE_TYPE,
 376                                    g_param_spec_enum ("message-type",
 377                                                       P_("Message Type"),
 378                                                       P_("The type of message"),
 379                                                       GTK_TYPE_MESSAGE_TYPE,
 380                                                       GTK_MESSAGE_INFO,
 381                                                       GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 382   /**
 383    * GtkInfoBar::response:
 384    * @info_bar: the object on which the signal is emitted
 385    * @response_id: the response ID
 386    *
 387    * Emitted when an action widget is clicked or the application programmer
 388    * calls gtk_dialog_response(). The @response_id depends on which action
 389    * widget was clicked.
 390    *
 391    * Since: 2.18
 392    */
 393   signals[RESPONSE] = g_signal_new (I_("response"),
 394                                     G_OBJECT_CLASS_TYPE (klass),
 395                                     G_SIGNAL_RUN_LAST,
 396                                     G_STRUCT_OFFSET (GtkInfoBarClass, response),
 397                                     NULL, NULL,
 398                                     g_cclosure_marshal_VOID__INT,
 399                                     G_TYPE_NONE, 1,
 400                                     G_TYPE_INT);
 401
 402   /**
 403    * GtkInfoBar::close:
 404    *
 405    * The ::close signal is a
 406    * <link linkend="keybinding-signals">keybinding signal</link>
 407    * which gets emitted when the user uses a keybinding to dismiss
 408    * the info bar.
 409    *
 410    * The default binding for this signal is the Escape key.
 411    *
 412    * Since: 2.18
 413    */
 414   signals[CLOSE] =  g_signal_new (I_("close"),
 415                                   G_OBJECT_CLASS_TYPE (klass),
 416                                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 417                                   G_STRUCT_OFFSET (GtkInfoBarClass, close),
 418                                   NULL, NULL,
 419                                   g_cclosure_marshal_VOID__VOID,
 420                                   G_TYPE_NONE, 0);
 421
 422   /**
 423    * GtkInfoBar:content-area-border:
 424    *
 425    * The width of the border around the content
 426    * content area of the info bar.
 427    *
 428    * Since: 2.18
 429    */
 430   gtk_widget_class_install_style_property (widget_class,
 431                                            g_param_spec_int ("content-area-border",
 432                                                              P_("Content area border"),
 433                                                              P_("Width of border around the content area"),
 434                                                              0,
 435                                                              G_MAXINT,
 436                                                              8,
 437                                                              GTK_PARAM_READABLE));
 438
 439   /**
 440    * GtkInfoBar:content-area-spacing:
 441    *
 442    * The default spacing used between elements of the
 443    * content area of the info bar.
 444    *
 445    * Since: 2.18
 446    */
 447   gtk_widget_class_install_style_property (widget_class,
 448                                            g_param_spec_int ("content-area-spacing",
 449                                                              P_("Content area spacing"),
 450                                                              P_("Spacing between elements of the area"),
 451                                                              0,
 452                                                              G_MAXINT,
 453                                                              16,
 454                                                              GTK_PARAM_READABLE));
 455
 456   /**
 457    * GtkInfoBar:button-spacing:
 458    *
 459    * Spacing between buttons in the action area of the info bar.
 460    *
 461    * Since: 2.18
 462    */
 463   gtk_widget_class_install_style_property (widget_class,
 464                                            g_param_spec_int ("button-spacing",
 465                                                              P_("Button spacing"),
 466                                                              P_("Spacing between buttons"),
 467                                                              0,
 468                                                              G_MAXINT,
 469                                                              6,
 470                                                              GTK_PARAM_READABLE));
 471
 472   /**
 473    * GtkInfoBar:action-area-border:
 474    *
 475    * Width of the border around the action area of the info bar.
 476    *
 477    * Since: 2.18
 478    */
 479   gtk_widget_class_install_style_property (widget_class,
 480                                            g_param_spec_int ("action-area-border",
 481                                                              P_("Action area border"),
 482                                                              P_("Width of border around the action area"),
 483                                                              0,
 484                                                              G_MAXINT,
 485                                                              5,
 486                                                              GTK_PARAM_READABLE));
 487
 488   binding_set = gtk_binding_set_by_class (klass);
 489
 490   gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "close", 0);
 491
 492   g_type_class_add_private (object_class, sizeof (GtkInfoBarPrivate));
 493 }
 494
 495 static void
 496 gtk_info_bar_update_colors (GtkInfoBar *info_bar)
 497 {
 498   GtkWidget *widget = GTK_WIDGET (info_bar);
 499   GtkInfoBarPrivate *priv = info_bar->priv;
 500   GdkColor info_default_border_color     = { 0, 0xb800, 0xad00, 0x9d00 };
 501   GdkColor info_default_fill_color       = { 0, 0xff00, 0xff00, 0xbf00 };
 502   GdkColor warning_default_border_color  = { 0, 0xb000, 0x7a00, 0x2b00 };
 503   GdkColor warning_default_fill_color    = { 0, 0xfc00, 0xaf00, 0x3e00 };
 504   GdkColor question_default_border_color = { 0, 0x6200, 0x7b00, 0xd960 };
 505   GdkColor question_default_fill_color   = { 0, 0x8c00, 0xb000, 0xd700 };
 506   GdkColor error_default_border_color    = { 0, 0xa800, 0x2700, 0x2700 };
 507   GdkColor error_default_fill_color      = { 0, 0xf000, 0x3800, 0x3800 };
 508   GdkColor other_default_border_color    = { 0, 0xb800, 0xad00, 0x9d00 };
 509   GdkColor other_default_fill_color      = { 0, 0xff00, 0xff00, 0xbf00 };
 510   GdkColor *fg, *bg;
 511   GdkColor sym_fg, sym_bg;
 512   GtkStyle *style;
 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   style = gtk_widget_get_style (widget);
 529
 530   if (gtk_style_lookup_color (style, fg_color_name[priv->message_type], &sym_fg) &&
 531       gtk_style_lookup_color (style, 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   if (!gdk_color_equal (bg, &widget->style->bg[GTK_STATE_NORMAL]))
 573     gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, bg);
 574   if (!gdk_color_equal (fg, &widget->style->fg[GTK_STATE_NORMAL]))
 575     gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, fg);
 576 }
 577
 578 static void
 579 gtk_info_bar_style_set (GtkWidget *widget,
 580                         GtkStyle  *prev_style)
 581 {
 582   GtkInfoBar *info_bar = GTK_INFO_BAR (widget);
 583   gint button_spacing;
 584   gint action_area_border;
 585   gint content_area_spacing;
 586   gint content_area_border;
 587
 588   gtk_widget_style_get (widget,
 589                         "button-spacing", &button_spacing,
 590                         "action-area-border", &action_area_border,
 591                         "content-area-spacing", &content_area_spacing,
 592                         "content-area-border", &content_area_border,
 593                         NULL);
 594
 595   gtk_box_set_spacing (GTK_BOX (info_bar->priv->action_area), button_spacing);
 596   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->action_area),
 597                                   action_area_border);
 598   gtk_box_set_spacing (GTK_BOX (info_bar->priv->content_area), content_area_spacing);
 599   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->content_area),
 600                                   content_area_border);
 601
 602   gtk_info_bar_update_colors (info_bar);
 603 }
 604
 605 static void
 606 gtk_info_bar_init (GtkInfoBar *info_bar)
 607 {
 608   GtkWidget *content_area;
 609   GtkWidget *action_area;
 610
 611   gtk_widget_push_composite_child ();
 612
 613   info_bar->priv = G_TYPE_INSTANCE_GET_PRIVATE (info_bar,
 614                                                 GTK_TYPE_INFO_BAR,
 615                                                 GtkInfoBarPrivate);
 616
 617   content_area = gtk_hbox_new (FALSE, 0);
 618   gtk_widget_show (content_area);
 619   gtk_box_pack_start (GTK_BOX (info_bar), content_area, TRUE, TRUE, 0);
 620
 621   action_area = gtk_vbutton_box_new ();
 622   gtk_widget_show (action_area);
 623   gtk_button_box_set_layout (GTK_BUTTON_BOX (action_area), GTK_BUTTONBOX_END);
 624   gtk_box_pack_start (GTK_BOX (info_bar), action_area, FALSE, TRUE, 0);
 625
 626   gtk_widget_set_app_paintable (GTK_WIDGET (info_bar), TRUE);
 627   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (info_bar), TRUE);
 628
 629   info_bar->priv->content_area = content_area;
 630   info_bar->priv->action_area = action_area;
 631
 632   gtk_widget_pop_composite_child ();
 633 }
 634
 635 static GtkBuildableIface *parent_buildable_iface;
 636
 637 static void
 638 gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface)
 639 {
 640   parent_buildable_iface = g_type_interface_peek_parent (iface);
 641   iface->get_internal_child = gtk_info_bar_buildable_get_internal_child;
 642   iface->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
 643   iface->custom_finished = gtk_info_bar_buildable_custom_finished;
 644 }
 645
 646 static GObject *
 647 gtk_info_bar_buildable_get_internal_child (GtkBuildable *buildable,
 648                                            GtkBuilder   *builder,
 649                                            const gchar  *childname)
 650 {
 651   if (strcmp (childname, "content_area") == 0)
 652     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->content_area);
 653   else if (strcmp (childname, "action_area") == 0)
 654     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->action_area);
 655
 656   return parent_buildable_iface->get_internal_child (buildable,
 657                                                      builder,
 658                                                      childname);
 659 }
 660
 661 static gint
 662 get_response_for_widget (GtkInfoBar *info_bar,
 663                          GtkWidget  *widget)
 664 {
 665   ResponseData *rd;
 666
 667   rd = get_response_data (widget, FALSE);
 668   if (!rd)
 669     return GTK_RESPONSE_NONE;
 670   else
 671     return rd->response_id;
 672 }
 673
 674 static void
 675 action_widget_activated (GtkWidget  *widget,
 676                          GtkInfoBar *info_bar)
 677 {
 678   gint response_id;
 679
 680   response_id = get_response_for_widget (info_bar, widget);
 681   gtk_info_bar_response (info_bar, response_id);
 682 }
 683
 684 /**
 685  * gtk_info_bar_add_action_widget:
 686  * @info_bar: a #GtkInfoBar
 687  * @child: an activatable widget
 688  * @response_id: response ID for @child
 689  *
 690  * Add an activatable widget to the action area of a #GtkInfoBar,
 691  * connecting a signal handler that will emit the #GtkInfoBar::response
 692  * signal on the message area when the widget is activated. The widget
 693  * is appended to the end of the message areas action area.
 694  *
 695  * Since: 2.18
 696  */
 697 void
 698 gtk_info_bar_add_action_widget (GtkInfoBar *info_bar,
 699                                 GtkWidget  *child,
 700                                 gint        response_id)
 701 {
 702   ResponseData *ad;
 703   guint signal_id;
 704
 705   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 706   g_return_if_fail (GTK_IS_WIDGET (child));
 707
 708   ad = get_response_data (child, TRUE);
 709
 710   ad->response_id = response_id;
 711
 712   if (GTK_IS_BUTTON (child))
 713     signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
 714   else
 715     signal_id = GTK_WIDGET_GET_CLASS (child)->activate_signal;
 716
 717   if (signal_id)
 718     {
 719       GClosure *closure;
 720
 721       closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
 722                                        G_OBJECT (info_bar));
 723       g_signal_connect_closure_by_id (child, signal_id, 0, closure, FALSE);
 724     }
 725   else
 726     g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkInfoBar");
 727
 728   gtk_box_pack_end (GTK_BOX (info_bar->priv->action_area),
 729                     child, FALSE, FALSE, 0);
 730   if (response_id == GTK_RESPONSE_HELP)
 731     gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
 732                                         child, TRUE);
 733 }
 734
 735 /**
 736  * gtk_info_bar_get_action_area:
 737  * @info_bar: a #GtkInfoBar
 738  *
 739  * Returns the action area of @info_bar.
 740  *
 741  * Returns: the action area.
 742  *
 743  * Since: 2.18
 744  */
 745 GtkWidget*
 746 gtk_info_bar_get_action_area (GtkInfoBar *info_bar)
 747 {
 748   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 749
 750   return info_bar->priv->action_area;
 751 }
 752
 753 /**
 754  * gtk_info_bar_get_content_area:
 755  * @info_bar: a #GtkInfoBar
 756  *
 757  * Returns the content area of @info_bar.
 758  *
 759  * Returns: the content area.
 760  *
 761  * Since: 2.18
 762  */
 763 GtkWidget*
 764 gtk_info_bar_get_content_area (GtkInfoBar *info_bar)
 765 {
 766   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 767
 768   return info_bar->priv->content_area;
 769 }
 770
 771 /**
 772  * gtk_info_bar_add_button:
 773  * @info_bar: a #GtkInfoBar
 774  * @button_text: text of button, or stock ID
 775  * @response_id: response ID for the button
 776  *
 777  * Adds a button with the given text (or a stock button, if button_text
 778  * is a stock ID) and sets things up so that clicking the button will emit
 779  * the "response" signal with the given response_id. The button is appended
 780  * to the end of the info bars's action area. The button widget is
 781  * returned, but usually you don't need it.
 782  *
 783  * Returns: the button widget that was added
 784  *
 785  * Since: 2.18
 786  */
 787 GtkWidget*
 788 gtk_info_bar_add_button (GtkInfoBar  *info_bar,
 789                          const gchar *button_text,
 790                          gint         response_id)
 791 {
 792   GtkWidget *button;
 793
 794   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 795   g_return_val_if_fail (button_text != NULL, NULL);
 796
 797   button = gtk_button_new_from_stock (button_text);
 798
 799   gtk_widget_set_can_default (button, TRUE);
 800
 801   gtk_widget_show (button);
 802
 803   gtk_info_bar_add_action_widget (info_bar, button, response_id);
 804
 805   return button;
 806 }
 807
 808 static void
 809 add_buttons_valist (GtkInfoBar  *info_bar,
 810                     const gchar *first_button_text,
 811                     va_list      args)
 812 {
 813   const gchar* text;
 814   gint response_id;
 815
 816   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 817
 818   if (first_button_text == NULL)
 819     return;
 820
 821   text = first_button_text;
 822   response_id = va_arg (args, gint);
 823
 824   while (text != NULL)
 825     {
 826       gtk_info_bar_add_button (info_bar, text, response_id);
 827
 828       text = va_arg (args, gchar*);
 829       if (text == NULL)
 830         break;
 831
 832       response_id = va_arg (args, int);
 833     }
 834 }
 835
 836 /**
 837  * gtk_info_bar_add_buttons:
 838  * @info_bar: a #GtkInfoBar
 839  * @first_button_text: button text or stock ID
 840  * @...: response ID for first button, then more text-response_id pairs,
 841  *     ending with %NULL
 842  *
 843  * Adds more buttons, same as calling gtk_info_bar_add_button()
 844  * repeatedly. The variable argument list should be %NULL-terminated
 845  * as with gtk_info_bar_new_with_buttons(). Each button must have both
 846  * text and response ID.
 847  *
 848  * Since: 2.18
 849  */
 850 void
 851 gtk_info_bar_add_buttons (GtkInfoBar  *info_bar,
 852                           const gchar *first_button_text,
 853                           ...)
 854 {
 855   va_list args;
 856
 857   va_start (args, first_button_text);
 858   add_buttons_valist (info_bar, first_button_text, args);
 859   va_end (args);
 860 }
 861
 862 /**
 863  * gtk_info_bar_new:
 864  *
 865  * Creates a new #GtkInfoBar object.
 866  *
 867  * Returns: a new #GtkInfoBar object
 868  *
 869  * Since: 2.18
 870  */
 871 GtkWidget *
 872 gtk_info_bar_new (void)
 873 {
 874    return g_object_new (GTK_TYPE_INFO_BAR, NULL);
 875 }
 876
 877 /**
 878  * gtk_info_bar_new_with_buttons:
 879  * @first_button_text: (allow-none): stock ID or text to go in first button, or %NULL
 880  * @...: response ID for first button, then additional buttons, ending
 881  *    with %NULL
 882  *
 883  * Creates a new #GtkInfoBar with buttons. Button text/response ID
 884  * pairs should be listed, with a %NULL pointer ending the list.
 885  * Button text can be either a stock ID such as %GTK_STOCK_OK, or
 886  * some arbitrary text. A response ID can be any positive number,
 887  * or one of the values in the #GtkResponseType enumeration. If the
 888  * user clicks one of these dialog buttons, GtkInfoBar will emit
 889  * the "response" signal with the corresponding response ID.
 890  *
 891  * Returns: a new #GtkInfoBar
 892  */
 893 GtkWidget*
 894 gtk_info_bar_new_with_buttons (const gchar *first_button_text,
 895                                ...)
 896 {
 897   GtkInfoBar *info_bar;
 898   va_list args;
 899
 900   info_bar = GTK_INFO_BAR (gtk_info_bar_new ());
 901
 902   va_start (args, first_button_text);
 903   add_buttons_valist (info_bar, first_button_text, args);
 904   va_end (args);
 905
 906   return GTK_WIDGET (info_bar);
 907 }
 908
 909 /**
 910  * gtk_info_bar_set_response_sensitive:
 911  * @info_bar: a #GtkInfoBar
 912  * @response_id: a response ID
 913  * @setting: TRUE for sensitive
 914  *
 915  * Calls gtk_widget_set_sensitive (widget, setting) for each
 916  * widget in the info bars's action area with the given response_id.
 917  * A convenient way to sensitize/desensitize dialog buttons.
 918  *
 919  * Since: 2.18
 920  */
 921 void
 922 gtk_info_bar_set_response_sensitive (GtkInfoBar *info_bar,
 923                                      gint        response_id,
 924                                      gboolean    setting)
 925 {
 926   GList *children, *list;
 927
 928   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 929
 930   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 931
 932   for (list = children; list; list = list->next)
 933     {
 934       GtkWidget *widget = list->data;
 935       ResponseData *rd = get_response_data (widget, FALSE);
 936
 937       if (rd && rd->response_id == response_id)
 938         gtk_widget_set_sensitive (widget, setting);
 939     }
 940
 941   g_list_free (children);
 942 }
 943
 944 /**
 945  * gtk_info_bar_set_default_response:
 946  * @info_bar: a #GtkInfoBar
 947  * @response_id: a response ID
 948  *
 949  * Sets the last widget in the info bar's action area with
 950  * the given response_id as the default widget for the dialog.
 951  * Pressing "Enter" normally activates the default widget.
 952  *
 953  * Note that this function currently requires @info_bar to
 954  * be added to a widget hierarchy.
 955  *
 956  * Since: 2.18
 957  */
 958 void
 959 gtk_info_bar_set_default_response (GtkInfoBar *info_bar,
 960                                    gint        response_id)
 961 {
 962   GList *children, *list;
 963
 964   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 965
 966   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 967
 968   for (list = children; list; list = list->next)
 969     {
 970       GtkWidget *widget = list->data;
 971       ResponseData *rd = get_response_data (widget, FALSE);
 972
 973       if (rd && rd->response_id == response_id)
 974         gtk_widget_grab_default (widget);
 975     }
 976
 977   g_list_free (children);
 978 }
 979
 980 /**
 981  * gtk_info_bar_response:
 982  * @info_bar: a #GtkInfoBar
 983  * @response_id: a response ID
 984  *
 985  * Emits the 'response' signal with the given @response_id.
 986  *
 987  * Since: 2.18
 988  */
 989 void
 990 gtk_info_bar_response (GtkInfoBar *info_bar,
 991                        gint        response_id)
 992 {
 993   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 994
 995   g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
 996 }
 997
 998 typedef struct
 999 {
1000   gchar *widget_name;
1001   gchar *response_id;
1002 } ActionWidgetInfo;
1003
1004 typedef struct
1005 {
1006   GtkInfoBar *info_bar;
1007   GtkBuilder *builder;
1008   GSList *items;
1009   gchar *response;
1010 } ActionWidgetsSubParserData;
1011
1012 static void
1013 attributes_start_element (GMarkupParseContext  *context,
1014                           const gchar          *element_name,
1015                           const gchar         **names,
1016                           const gchar         **values,
1017                           gpointer              user_data,
1018                           GError              **error)
1019 {
1020   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1021   guint i;
1022
1023   if (strcmp (element_name, "action-widget") == 0)
1024     {
1025       for (i = 0; names[i]; i++)
1026         if (strcmp (names[i], "response") == 0)
1027           parser_data->response = g_strdup (values[i]);
1028     }
1029   else if (strcmp (element_name, "action-widgets") == 0)
1030     return;
1031   else
1032     g_warning ("Unsupported tag for GtkInfoBar: %s\n", element_name);
1033 }
1034
1035 static void
1036 attributes_text_element (GMarkupParseContext  *context,
1037                          const gchar          *text,
1038                          gsize                 text_len,
1039                          gpointer              user_data,
1040                          GError              **error)
1041 {
1042   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1043   ActionWidgetInfo *item;
1044
1045   if (!parser_data->response)
1046     return;
1047
1048   item = g_new (ActionWidgetInfo, 1);
1049   item->widget_name = g_strndup (text, text_len);
1050   item->response_id = parser_data->response;
1051   parser_data->items = g_slist_prepend (parser_data->items, item);
1052   parser_data->response = NULL;
1053 }
1054
1055 static const GMarkupParser attributes_parser =
1056 {
1057   attributes_start_element,
1058   NULL,
1059   attributes_text_element,
1060 };
1061
1062 gboolean
1063 gtk_info_bar_buildable_custom_tag_start (GtkBuildable  *buildable,
1064                                          GtkBuilder    *builder,
1065                                          GObject       *child,
1066                                          const gchar   *tagname,
1067                                          GMarkupParser *parser,
1068                                          gpointer      *data)
1069 {
1070   ActionWidgetsSubParserData *parser_data;
1071
1072   if (child)
1073     return FALSE;
1074
1075   if (strcmp (tagname, "action-widgets") == 0)
1076     {
1077       parser_data = g_slice_new0 (ActionWidgetsSubParserData);
1078       parser_data->info_bar = GTK_INFO_BAR (buildable);
1079       parser_data->items = NULL;
1080
1081       *parser = attributes_parser;
1082       *data = parser_data;
1083       return TRUE;
1084     }
1085
1086   return parent_buildable_iface->custom_tag_start (buildable, builder, child,
1087                                                    tagname, parser, data);
1088 }
1089
1090 static void
1091 gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
1092                                         GtkBuilder   *builder,
1093                                         GObject      *child,
1094                                         const gchar  *tagname,
1095                                         gpointer      user_data)
1096 {
1097   GSList *l;
1098   ActionWidgetsSubParserData *parser_data;
1099   GObject *object;
1100   GtkInfoBar *info_bar;
1101   ResponseData *ad;
1102   guint signal_id;
1103
1104   if (strcmp (tagname, "action-widgets"))
1105     {
1106       parent_buildable_iface->custom_finished (buildable, builder, child,
1107                                                tagname, user_data);
1108       return;
1109     }
1110
1111   info_bar = GTK_INFO_BAR (buildable);
1112   parser_data = (ActionWidgetsSubParserData*)user_data;
1113   parser_data->items = g_slist_reverse (parser_data->items);
1114
1115   for (l = parser_data->items; l; l = l->next)
1116     {
1117       ActionWidgetInfo *item = l->data;
1118
1119       object = gtk_builder_get_object (builder, item->widget_name);
1120       if (!object)
1121         {
1122           g_warning ("Unknown object %s specified in action-widgets of %s",
1123                      item->widget_name,
1124                      gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
1125           continue;
1126         }
1127
1128       ad = get_response_data (GTK_WIDGET (object), TRUE);
1129       ad->response_id = atoi (item->response_id);
1130
1131       if (GTK_IS_BUTTON (object))
1132         signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
1133       else
1134         signal_id = GTK_WIDGET_GET_CLASS (object)->activate_signal;
1135
1136       if (signal_id)
1137         {
1138           GClosure *closure;
1139
1140           closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
1141                                            G_OBJECT (info_bar));
1142           g_signal_connect_closure_by_id (object,
1143                                           signal_id,
1144                                           0,
1145                                           closure,
1146                                           FALSE);
1147         }
1148
1149       if (ad->response_id == GTK_RESPONSE_HELP)
1150         gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
1151                                             GTK_WIDGET (object), TRUE);
1152
1153       g_free (item->widget_name);
1154       g_free (item->response_id);
1155       g_free (item);
1156     }
1157   g_slist_free (parser_data->items);
1158   g_slice_free (ActionWidgetsSubParserData, parser_data);
1159 }
1160
1161 /**
1162  * gtk_info_bar_set_message_type:
1163  * @info_bar: a #GtkInfoBar
1164  * @message_type: a #GtkMessageType
1165  *
1166  * Sets the message type of the message area.
1167  * GTK+ uses this type to determine what color to use
1168  * when drawing the message area.
1169  *
1170  * Since: 2.18
1171  */
1172 void
1173 gtk_info_bar_set_message_type (GtkInfoBar     *info_bar,
1174                                GtkMessageType  message_type)
1175 {
1176   GtkInfoBarPrivate *priv;
1177   AtkObject *atk_obj;
1178
1179   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
1180
1181   priv = info_bar->priv;
1182
1183   if (priv->message_type != message_type)
1184     {
1185       priv->message_type = message_type;
1186
1187       gtk_info_bar_update_colors (info_bar);
1188       gtk_widget_queue_draw (GTK_WIDGET (info_bar));
1189
1190       atk_obj = gtk_widget_get_accessible (GTK_WIDGET (info_bar));
1191       if (GTK_IS_ACCESSIBLE (atk_obj))
1192         {
1193           GtkStockItem item;
1194           const char *stock_id = NULL;
1195
1196           atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
1197
1198           switch (message_type)
1199             {
1200             case GTK_MESSAGE_INFO:
1201               stock_id = GTK_STOCK_DIALOG_INFO;
1202               break;
1203
1204             case GTK_MESSAGE_QUESTION:
1205               stock_id = GTK_STOCK_DIALOG_QUESTION;
1206               break;
1207
1208             case GTK_MESSAGE_WARNING:
1209               stock_id = GTK_STOCK_DIALOG_WARNING;
1210               break;
1211
1212             case GTK_MESSAGE_ERROR:
1213               stock_id = GTK_STOCK_DIALOG_ERROR;
1214               break;
1215
1216             case GTK_MESSAGE_OTHER:
1217               break;
1218
1219             default:
1220               g_warning ("Unknown GtkMessageType %u", message_type);
1221               break;
1222             }
1223
1224           if (stock_id)
1225             {
1226               gtk_stock_lookup (stock_id, &item);
1227               atk_object_set_name (atk_obj, item.label);
1228             }
1229         }
1230
1231       g_object_notify (G_OBJECT (info_bar), "message-type");
1232     }
1233 }
1234
1235 /**
1236  * gtk_info_bar_get_message_type:
1237  * @info_bar: a #GtkInfoBar
1238  *
1239  * Returns the message type of the message area.
1240  *
1241  * Returns: the message type of the message area.
1242  *
1243  * Since: 2.18
1244  */
1245 GtkMessageType
1246 gtk_info_bar_get_message_type (GtkInfoBar *info_bar)
1247 {
1248   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
1249
1250   return info_bar->priv->message_type;
1251 }