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 #include "gtkalias.h"
  51
  52
  53 /**
  54  * SECTION:gtkinfobar
  55  * @short_description: Report important messages to the user
  56  * @include: gtk/gtk.h
  57  * @see_also: #GtkStatusbar, #GtkMessageDialog
  58  *
  59  * #GtkInfoBar is a widget that can be used to show messages to
  60  * the user without showing a dialog. It is often temporarily shown
  61  * at the top or bottom of a document. In contrast to #GtkDialog, which
  62  * has a horizontal action area at the bottom, #GtkInfoBar has a
  63  * vertical action area at the side.
  64  *
  65  * The API of #GtkInfoBar is very similar to #GtkDialog, allowing you
  66  * to add buttons to the action area with gtk_info_bar_add_button() or
  67  * gtk_info_bar_new_with_buttons(). The sensitivity of action widgets
  68  * can be controlled with gtk_info_bar_set_response_sensitive().
  69  * To add widgets to the main content area of a #GtkInfoBar, use
  70  * gtk_info_bar_get_content_area() and add your widgets to the container.
  71  *
  72  * Similar to #GtkMessageDialog, the contents of a #GtkInfoBar can by
  73  * classified as error message, warning, informational message, etc,
  74  * by using gtk_info_bar_set_message_type(). GTK+ uses the message type
  75  * to determine the background color of the message area.
  76  *
  77  * <example>
  78  * <title>Simple GtkInfoBar usage.</title>
  79  * <programlisting>
  80  * /&ast; set up info bar &ast;/
  81  * info_bar = gtk_info_bar_new ();
  82  * gtk_widget_set_no_show_all (info_bar, TRUE);
  83  * message_label = gtk_label_new ("");
  84  * gtk_widget_show (message_label);
  85  * content_area = gtk_info_bar_get_content_area (GTK_INFO_BAR (info_bar));
  86  * gtk_container_add (GTK_CONTAINER (content_area), message_label);
  87  * gtk_info_bar_add_button (GTK_INFO_BAR (info_bar),
  88  *                          GTK_STOCK_OK, GTK_RESPONSE_OK);
  89  * g_signal_connect (info_bar, "response",
  90  *                   G_CALLBACK (gtk_widget_hide), NULL);
  91  * gtk_table_attach (GTK_TABLE (table),
  92  *                   info_bar,
  93  *                   0, 1, 2, 3,
  94  *                   GTK_EXPAND | GTK_FILL,  0,
  95  *                   0,                      0);
  96  *
  97  * /&ast; ... &ast;/
  98  *
  99  * /&ast; show an error message &ast;/
 100  * gtk_label_set_text (GTK_LABEL (message_label), error_message);
 101  * gtk_info_bar_set_message_type (GTK_INFO_BAR (info_bar),
 102  *                                GTK_MESSAGE_ERROR);
 103  * gtk_widget_show (info_bar);
 104  * </programlisting>
 105  * </example>
 106  *
 107  * <refsect2 id="GtkInfoBar-BUILDER-UI">
 108  * <title>GtkInfoBar as GtkBuildable</title>
 109  * <para>
 110  * The GtkInfoBar implementation of the GtkBuildable interface exposes
 111  * the content area and action area as internal children with the names
 112  * "content_area" and "action_area".
 113  * </para>
 114  * <para>
 115  * GtkInfoBar supports a custom &lt;action-widgets&gt; element, which
 116  * can contain multiple &lt;action-widget&gt; elements. The "response"
 117  * attribute specifies a numeric response, and the content of the element
 118  * is the id of widget (which should be a child of the dialogs @action_area).
 119  * </para>
 120  * </refsect2>
 121  */
 122
 123 #define GTK_INFO_BAR_GET_PRIVATE(object) \
 124   (G_TYPE_INSTANCE_GET_PRIVATE ((object), \
 125                                 GTK_TYPE_INFO_BAR, \
 126                                 GtkInfoBarPrivate))
 127
 128 enum
 129 {
 130   PROP_0,
 131   PROP_MESSAGE_TYPE
 132 };
 133
 134 struct _GtkInfoBarPrivate
 135 {
 136   GtkWidget *content_area;
 137   GtkWidget *action_area;
 138
 139   GtkMessageType message_type;
 140 };
 141
 142 typedef struct _ResponseData ResponseData;
 143
 144 struct _ResponseData
 145 {
 146   gint response_id;
 147 };
 148
 149 enum
 150 {
 151   RESPONSE,
 152   CLOSE,
 153   LAST_SIGNAL
 154 };
 155
 156 static guint signals[LAST_SIGNAL];
 157
 158
 159 static void     gtk_info_bar_set_property (GObject        *object,
 160                                            guint           prop_id,
 161                                            const GValue   *value,
 162                                            GParamSpec     *pspec);
 163 static void     gtk_info_bar_get_property (GObject        *object,
 164                                            guint           prop_id,
 165                                            GValue         *value,
 166                                            GParamSpec     *pspec);
 167 static void     gtk_info_bar_style_set    (GtkWidget      *widget,
 168                                            GtkStyle       *prev_style);
 169 static gboolean gtk_info_bar_expose       (GtkWidget      *widget,
 170                                            GdkEventExpose *event);
 171 static void     gtk_info_bar_buildable_interface_init     (GtkBuildableIface *iface);
 172 static GObject *gtk_info_bar_buildable_get_internal_child (GtkBuildable  *buildable,
 173                                                            GtkBuilder    *builder,
 174                                                            const gchar   *childname);
 175 static gboolean  gtk_info_bar_buildable_custom_tag_start   (GtkBuildable  *buildable,
 176                                                             GtkBuilder    *builder,
 177                                                             GObject       *child,
 178                                                             const gchar   *tagname,
 179                                                             GMarkupParser *parser,
 180                                                             gpointer      *data);
 181 static void      gtk_info_bar_buildable_custom_finished    (GtkBuildable  *buildable,
 182                                                             GtkBuilder    *builder,
 183                                                             GObject       *child,
 184                                                             const gchar   *tagname,
 185                                                             gpointer       user_data);
 186
 187
 188 G_DEFINE_TYPE_WITH_CODE (GtkInfoBar, gtk_info_bar, GTK_TYPE_HBOX,
 189                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 190                                                 gtk_info_bar_buildable_interface_init))
 191
 192 static void
 193 gtk_info_bar_set_property (GObject      *object,
 194                            guint         prop_id,
 195                            const GValue *value,
 196                            GParamSpec   *pspec)
 197 {
 198   GtkInfoBar *info_bar;
 199   GtkInfoBarPrivate *priv;
 200
 201   info_bar = GTK_INFO_BAR (object);
 202   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 203
 204   switch (prop_id)
 205     {
 206     case PROP_MESSAGE_TYPE:
 207       gtk_info_bar_set_message_type (info_bar, g_value_get_enum (value));
 208       break;
 209     default:
 210       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 211       break;
 212     }
 213 }
 214
 215 static void
 216 gtk_info_bar_get_property (GObject    *object,
 217                            guint       prop_id,
 218                            GValue     *value,
 219                            GParamSpec *pspec)
 220 {
 221   GtkInfoBar *info_bar;
 222   GtkInfoBarPrivate *priv;
 223
 224   info_bar = GTK_INFO_BAR (object);
 225   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 226
 227   switch (prop_id)
 228     {
 229     case PROP_MESSAGE_TYPE:
 230       g_value_set_enum (value, gtk_info_bar_get_message_type (info_bar));
 231       break;
 232     default:
 233       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 234       break;
 235     }
 236 }
 237
 238 static void
 239 gtk_info_bar_finalize (GObject *object)
 240 {
 241   G_OBJECT_CLASS (gtk_info_bar_parent_class)->finalize (object);
 242 }
 243
 244 static void
 245 response_data_free (gpointer data)
 246 {
 247   g_slice_free (ResponseData, data);
 248 }
 249
 250 static ResponseData *
 251 get_response_data (GtkWidget *widget,
 252                    gboolean   create)
 253 {
 254   ResponseData *ad = g_object_get_data (G_OBJECT (widget),
 255                                         "gtk-info-bar-response-data");
 256
 257   if (ad == NULL && create)
 258     {
 259       ad = g_slice_new (ResponseData);
 260
 261       g_object_set_data_full (G_OBJECT (widget),
 262                               I_("gtk-info-bar-response-data"),
 263                               ad,
 264                               response_data_free);
 265     }
 266
 267   return ad;
 268 }
 269
 270 static GtkWidget *
 271 find_button (GtkInfoBar *info_bar,
 272              gint        response_id)
 273 {
 274   GList *children, *list;
 275   GtkWidget *child = NULL;
 276
 277   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 278
 279   for (list = children; list; list = list->next)
 280     {
 281       ResponseData *rd = get_response_data (list->data, FALSE);
 282
 283       if (rd && rd->response_id == response_id)
 284         {
 285           child = list->data;
 286           break;
 287         }
 288     }
 289
 290   g_list_free (children);
 291
 292   return child;
 293 }
 294
 295 static void
 296 gtk_info_bar_close (GtkInfoBar *info_bar)
 297 {
 298   if (!find_button (info_bar, GTK_RESPONSE_CANCEL))
 299     return;
 300
 301   gtk_info_bar_response (GTK_INFO_BAR (info_bar),
 302                          GTK_RESPONSE_CANCEL);
 303 }
 304
 305 static gboolean
 306 gtk_info_bar_expose (GtkWidget      *widget,
 307                      GdkEventExpose *event)
 308 {
 309   GtkInfoBarPrivate *priv = GTK_INFO_BAR_GET_PRIVATE (widget);
 310   const char* type_detail[] = {
 311     "infobar-info",
 312     "infobar-warning",
 313     "infobar-question",
 314     "infobar-error",
 315     "infobar"
 316   };
 317
 318   if (priv->message_type != GTK_MESSAGE_OTHER)
 319     {
 320       const char *detail;
 321
 322       detail = type_detail[priv->message_type];
 323
 324       gtk_paint_box (widget->style,
 325                      widget->window,
 326                      GTK_STATE_NORMAL,
 327                      GTK_SHADOW_OUT,
 328                      NULL,
 329                      widget,
 330                      detail,
 331                      widget->allocation.x,
 332                      widget->allocation.y,
 333                      widget->allocation.width,
 334                      widget->allocation.height);
 335     }
 336
 337   if (GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event)
 338     GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event (widget, event);
 339
 340   return FALSE;
 341 }
 342
 343 static void
 344 gtk_info_bar_class_init (GtkInfoBarClass *klass)
 345 {
 346   GtkWidgetClass *widget_class;
 347   GObjectClass *object_class;
 348   GtkBindingSet *binding_set;
 349
 350   widget_class = GTK_WIDGET_CLASS (klass);
 351   object_class = G_OBJECT_CLASS (klass);
 352
 353   object_class->get_property = gtk_info_bar_get_property;
 354   object_class->set_property = gtk_info_bar_set_property;
 355   object_class->finalize = gtk_info_bar_finalize;
 356
 357   widget_class->style_set = gtk_info_bar_style_set;
 358   widget_class->expose_event = gtk_info_bar_expose;
 359
 360   klass->close = gtk_info_bar_close;
 361
 362   /**
 363    * GtkInfoBar:message-type:
 364    *
 365    * The type of the message.
 366    *
 367    * The type is used to determine the colors to use in the info bar.
 368    * The following symbolic color names can by used to customize
 369    * these colors:
 370    * "info_fg_color", "info_bg_color",
 371    * "warning_fg_color", "warning_bg_color",
 372    * "question_fg_color", "question_bg_color",
 373    * "error_fg_color", "error_bg_color".
 374    * "other_fg_color", "other_bg_color".
 375    *
 376    * If the type is #GTK_MESSAGE_OTHER, no info bar is painted but the
 377    * colors are still set.
 378    *
 379    * Since: 2.18
 380    */
 381   g_object_class_install_property (object_class,
 382                                    PROP_MESSAGE_TYPE,
 383                                    g_param_spec_enum ("message-type",
 384                                                       P_("Message Type"),
 385                                                       P_("The type of message"),
 386                                                       GTK_TYPE_MESSAGE_TYPE,
 387                                                       GTK_MESSAGE_INFO,
 388                                                       GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 389   /**
 390    * GtkInfoBar::response:
 391    * @info_bar: the object on which the signal is emitted
 392    * @response_id: the response ID
 393    *
 394    * Emitted when an action widget is clicked or the application programmer
 395    * calls gtk_dialog_response(). The @response_id depends on which action
 396    * widget was clicked.
 397    *
 398    * Since: 2.18
 399    */
 400   signals[RESPONSE] = g_signal_new (I_("response"),
 401                                     G_OBJECT_CLASS_TYPE (klass),
 402                                     G_SIGNAL_RUN_LAST,
 403                                     G_STRUCT_OFFSET (GtkInfoBarClass, response),
 404                                     NULL, NULL,
 405                                     g_cclosure_marshal_VOID__INT,
 406                                     G_TYPE_NONE, 1,
 407                                     G_TYPE_INT);
 408
 409   /**
 410    * GtkInfoBar::close:
 411    *
 412    * The ::close signal is a
 413    * <link linkend="keybinding-signals">keybinding signal</link>
 414    * which gets emitted when the user uses a keybinding to dismiss
 415    * the info bar.
 416    *
 417    * The default binding for this signal is the Escape key.
 418    *
 419    * Since: 2.18
 420    */
 421   signals[CLOSE] =  g_signal_new (I_("close"),
 422                                   G_OBJECT_CLASS_TYPE (klass),
 423                                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 424                                   G_STRUCT_OFFSET (GtkInfoBarClass, close),
 425                                   NULL, NULL,
 426                                   g_cclosure_marshal_VOID__VOID,
 427                                   G_TYPE_NONE, 0);
 428
 429   /**
 430    * GtkInfoBar:content-area-border:
 431    *
 432    * The width of the border around the content
 433    * content area of the info bar.
 434    *
 435    * Since: 2.18
 436    */
 437   gtk_widget_class_install_style_property (widget_class,
 438                                            g_param_spec_int ("content-area-border",
 439                                                              P_("Content area border"),
 440                                                              P_("Width of border around the content area"),
 441                                                              0,
 442                                                              G_MAXINT,
 443                                                              8,
 444                                                              GTK_PARAM_READABLE));
 445
 446   /**
 447    * GtkInfoBar:content-area-spacing:
 448    *
 449    * The default spacing used between elements of the
 450    * content area of the info bar.
 451    *
 452    * Since: 2.18
 453    */
 454   gtk_widget_class_install_style_property (widget_class,
 455                                            g_param_spec_int ("content-area-spacing",
 456                                                              P_("Content area spacing"),
 457                                                              P_("Spacing between elements of the area"),
 458                                                              0,
 459                                                              G_MAXINT,
 460                                                              16,
 461                                                              GTK_PARAM_READABLE));
 462
 463   /**
 464    * GtkInfoBar:button-spacing:
 465    *
 466    * Spacing between buttons in the action area of the info bar.
 467    *
 468    * Since: 2.18
 469    */
 470   gtk_widget_class_install_style_property (widget_class,
 471                                            g_param_spec_int ("button-spacing",
 472                                                              P_("Button spacing"),
 473                                                              P_("Spacing between buttons"),
 474                                                              0,
 475                                                              G_MAXINT,
 476                                                              6,
 477                                                              GTK_PARAM_READABLE));
 478
 479   /**
 480    * GtkInfoBar:action-area-border:
 481    *
 482    * Width of the border around the action area of the info bar.
 483    *
 484    * Since: 2.18
 485    */
 486   gtk_widget_class_install_style_property (widget_class,
 487                                            g_param_spec_int ("action-area-border",
 488                                                              P_("Action area border"),
 489                                                              P_("Width of border around the action area"),
 490                                                              0,
 491                                                              G_MAXINT,
 492                                                              5,
 493                                                              GTK_PARAM_READABLE));
 494
 495   binding_set = gtk_binding_set_by_class (klass);
 496
 497   gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "close", 0);
 498
 499   g_type_class_add_private (object_class, sizeof (GtkInfoBarPrivate));
 500 }
 501
 502 static void
 503 gtk_info_bar_update_colors (GtkInfoBar *info_bar)
 504 {
 505   GtkWidget *widget = (GtkWidget*)info_bar;
 506   GtkInfoBarPrivate *priv;
 507   GdkColor info_default_border_color     = { 0, 0xb800, 0xad00, 0x9d00 };
 508   GdkColor info_default_fill_color       = { 0, 0xff00, 0xff00, 0xbf00 };
 509   GdkColor warning_default_border_color  = { 0, 0xb000, 0x7a00, 0x2b00 };
 510   GdkColor warning_default_fill_color    = { 0, 0xfc00, 0xaf00, 0x3e00 };
 511   GdkColor question_default_border_color = { 0, 0x6200, 0x7b00, 0xd960 };
 512   GdkColor question_default_fill_color   = { 0, 0x8c00, 0xb000, 0xd700 };
 513   GdkColor error_default_border_color    = { 0, 0xa800, 0x2700, 0x2700 };
 514   GdkColor error_default_fill_color      = { 0, 0xf000, 0x3800, 0x3800 };
 515   GdkColor other_default_border_color    = { 0, 0xb800, 0xad00, 0x9d00 };
 516   GdkColor other_default_fill_color      = { 0, 0xff00, 0xff00, 0xbf00 };
 517   GdkColor *fg, *bg;
 518   GdkColor sym_fg, sym_bg;
 519   GtkStyle *style;
 520   const char* fg_color_name[] = {
 521     "info_fg_color",
 522     "warning_fg_color",
 523     "question_fg_color",
 524     "error_fg_color",
 525     "other_fg_color"
 526   };
 527   const char* bg_color_name[] = {
 528     "info_bg_color",
 529     "warning_bg_color",
 530     "question_bg_color",
 531     "error_bg_color",
 532     "other_bg_color"
 533   };
 534
 535   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 536   style = gtk_widget_get_style (widget);
 537
 538   if (gtk_style_lookup_color (style, fg_color_name[priv->message_type], &sym_fg) &&
 539       gtk_style_lookup_color (style, bg_color_name[priv->message_type], &sym_bg))
 540     {
 541       fg = &sym_fg;
 542       bg = &sym_bg;
 543     }
 544   else
 545     {
 546       switch (priv->message_type)
 547         {
 548         case GTK_MESSAGE_INFO:
 549           fg = &info_default_border_color;
 550           bg = &info_default_fill_color;
 551           break;
 552
 553         case GTK_MESSAGE_WARNING:
 554           fg = &warning_default_border_color;
 555           bg = &warning_default_fill_color;
 556           break;
 557
 558         case GTK_MESSAGE_QUESTION:
 559           fg = &question_default_border_color;
 560           bg = &question_default_fill_color;
 561           break;
 562
 563         case GTK_MESSAGE_ERROR:
 564           fg = &error_default_border_color;
 565           bg = &error_default_fill_color;
 566           break;
 567
 568         case GTK_MESSAGE_OTHER:
 569           fg = &other_default_border_color;
 570           bg = &other_default_fill_color;
 571           break;
 572         }
 573     }
 574
 575   if (!gdk_color_equal (bg, &widget->style->bg[GTK_STATE_NORMAL]))
 576     gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, bg);
 577   if (!gdk_color_equal (fg, &widget->style->fg[GTK_STATE_NORMAL]))
 578     gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, fg);
 579 }
 580
 581 static void
 582 gtk_info_bar_style_set (GtkWidget *widget,
 583                         GtkStyle  *prev_style)
 584 {
 585   GtkInfoBar *info_bar = GTK_INFO_BAR (widget);
 586   gint button_spacing;
 587   gint action_area_border;
 588   gint content_area_spacing;
 589   gint content_area_border;
 590
 591   gtk_widget_style_get (widget,
 592                         "button-spacing", &button_spacing,
 593                         "action-area-border", &action_area_border,
 594                         "content-area-spacing", &content_area_spacing,
 595                         "content-area-border", &content_area_border,
 596                         NULL);
 597
 598   gtk_box_set_spacing (GTK_BOX (info_bar->priv->action_area), button_spacing);
 599   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->action_area),
 600                                   action_area_border);
 601   gtk_box_set_spacing (GTK_BOX (info_bar->priv->content_area), content_area_spacing);
 602   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->content_area),
 603                                   content_area_border);
 604
 605   gtk_info_bar_update_colors (info_bar);
 606 }
 607
 608 static void
 609 gtk_info_bar_init (GtkInfoBar *info_bar)
 610 {
 611   GtkWidget *content_area;
 612   GtkWidget *action_area;
 613
 614   gtk_widget_push_composite_child ();
 615
 616   info_bar->priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 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: 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: 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: 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_FLAGS (button, GTK_CAN_DEFAULT);
 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: 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  * Since: 2.18
 955  */
 956 void
 957 gtk_info_bar_set_default_response (GtkInfoBar *info_bar,
 958                                    gint        response_id)
 959 {
 960   GList *children, *list;
 961
 962   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 963
 964   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 965
 966   for (list = children; list; list = list->next)
 967     {
 968       GtkWidget *widget = list->data;
 969       ResponseData *rd = get_response_data (widget, FALSE);
 970
 971       if (rd && rd->response_id == response_id)
 972         gtk_widget_grab_default (widget);
 973     }
 974
 975   g_list_free (children);
 976 }
 977
 978 /**
 979  * gtk_info_bar_response:
 980  * @info_bar: a #GtkInfoBar
 981  * @response_id: a response ID
 982  *
 983  * Emits the 'response' signal with the given @response_id.
 984  *
 985  * Since: 2.18
 986  */
 987 void
 988 gtk_info_bar_response (GtkInfoBar *info_bar,
 989                        gint        response_id)
 990 {
 991   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 992
 993   g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
 994 }
 995
 996 typedef struct
 997 {
 998   gchar *widget_name;
 999   gchar *response_id;
1000 } ActionWidgetInfo;
1001
1002 typedef struct
1003 {
1004   GtkInfoBar *info_bar;
1005   GtkBuilder *builder;
1006   GSList *items;
1007   gchar *response;
1008 } ActionWidgetsSubParserData;
1009
1010 static void
1011 attributes_start_element (GMarkupParseContext  *context,
1012                           const gchar          *element_name,
1013                           const gchar         **names,
1014                           const gchar         **values,
1015                           gpointer              user_data,
1016                           GError              **error)
1017 {
1018   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1019   guint i;
1020
1021   if (strcmp (element_name, "action-widget") == 0)
1022     {
1023       for (i = 0; names[i]; i++)
1024         if (strcmp (names[i], "response") == 0)
1025           parser_data->response = g_strdup (values[i]);
1026     }
1027   else if (strcmp (element_name, "action-widgets") == 0)
1028     return;
1029   else
1030     g_warning ("Unsupported tag for GtkInfoBar: %s\n", element_name);
1031 }
1032
1033 static void
1034 attributes_text_element (GMarkupParseContext  *context,
1035                          const gchar          *text,
1036                          gsize                 text_len,
1037                          gpointer              user_data,
1038                          GError              **error)
1039 {
1040   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1041   ActionWidgetInfo *item;
1042
1043   if (!parser_data->response)
1044     return;
1045
1046   item = g_new (ActionWidgetInfo, 1);
1047   item->widget_name = g_strndup (text, text_len);
1048   item->response_id = parser_data->response;
1049   parser_data->items = g_slist_prepend (parser_data->items, item);
1050   parser_data->response = NULL;
1051 }
1052
1053 static const GMarkupParser attributes_parser =
1054 {
1055   attributes_start_element,
1056   NULL,
1057   attributes_text_element,
1058 };
1059
1060 gboolean
1061 gtk_info_bar_buildable_custom_tag_start (GtkBuildable  *buildable,
1062                                          GtkBuilder    *builder,
1063                                          GObject       *child,
1064                                          const gchar   *tagname,
1065                                          GMarkupParser *parser,
1066                                          gpointer      *data)
1067 {
1068   ActionWidgetsSubParserData *parser_data;
1069
1070   if (child)
1071     return FALSE;
1072
1073   if (strcmp (tagname, "action-widgets") == 0)
1074     {
1075       parser_data = g_slice_new0 (ActionWidgetsSubParserData);
1076       parser_data->info_bar = GTK_INFO_BAR (buildable);
1077       parser_data->items = NULL;
1078
1079       *parser = attributes_parser;
1080       *data = parser_data;
1081       return TRUE;
1082     }
1083
1084   return parent_buildable_iface->custom_tag_start (buildable, builder, child,
1085                                                    tagname, parser, data);
1086 }
1087
1088 static void
1089 gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
1090                                         GtkBuilder   *builder,
1091                                         GObject      *child,
1092                                         const gchar  *tagname,
1093                                         gpointer      user_data)
1094 {
1095   GSList *l;
1096   ActionWidgetsSubParserData *parser_data;
1097   GObject *object;
1098   GtkInfoBar *info_bar;
1099   ResponseData *ad;
1100   guint signal_id;
1101
1102   if (strcmp (tagname, "action-widgets"))
1103     {
1104       parent_buildable_iface->custom_finished (buildable, builder, child,
1105                                                tagname, user_data);
1106       return;
1107     }
1108
1109   info_bar = GTK_INFO_BAR (buildable);
1110   parser_data = (ActionWidgetsSubParserData*)user_data;
1111   parser_data->items = g_slist_reverse (parser_data->items);
1112
1113   for (l = parser_data->items; l; l = l->next)
1114     {
1115       ActionWidgetInfo *item = l->data;
1116
1117       object = gtk_builder_get_object (builder, item->widget_name);
1118       if (!object)
1119         {
1120           g_warning ("Unknown object %s specified in action-widgets of %s",
1121                      item->widget_name,
1122                      gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
1123           continue;
1124         }
1125
1126       ad = get_response_data (GTK_WIDGET (object), TRUE);
1127       ad->response_id = atoi (item->response_id);
1128
1129       if (GTK_IS_BUTTON (object))
1130         signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
1131       else
1132         signal_id = GTK_WIDGET_GET_CLASS (object)->activate_signal;
1133
1134       if (signal_id)
1135         {
1136           GClosure *closure;
1137
1138           closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
1139                                            G_OBJECT (info_bar));
1140           g_signal_connect_closure_by_id (object,
1141                                           signal_id,
1142                                           0,
1143                                           closure,
1144                                           FALSE);
1145         }
1146
1147       if (ad->response_id == GTK_RESPONSE_HELP)
1148         gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
1149                                             GTK_WIDGET (object), TRUE);
1150
1151       g_free (item->widget_name);
1152       g_free (item->response_id);
1153       g_free (item);
1154     }
1155   g_slist_free (parser_data->items);
1156   g_slice_free (ActionWidgetsSubParserData, parser_data);
1157 }
1158
1159 /**
1160  * gtk_info_bar_set_message_type:
1161  * @info_bar: a #GtkInfoBar
1162  * @message_type: a #GtkMessageType
1163  *
1164  * Sets the message type of the message area.
1165  * GTK+ uses this type to determine what color to use
1166  * when drawing the message area.
1167  *
1168  * Since: 2.18
1169  */
1170 void
1171 gtk_info_bar_set_message_type (GtkInfoBar     *info_bar,
1172                                GtkMessageType  message_type)
1173 {
1174   GtkInfoBarPrivate *priv;
1175   AtkObject *atk_obj;
1176
1177   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
1178
1179   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
1180
1181   if (priv->message_type != message_type)
1182     {
1183       priv->message_type = message_type;
1184
1185       gtk_info_bar_update_colors (info_bar);
1186       gtk_widget_queue_draw (GTK_WIDGET (info_bar));
1187
1188       atk_obj = gtk_widget_get_accessible (GTK_WIDGET (info_bar));
1189       if (GTK_IS_ACCESSIBLE (atk_obj))
1190         {
1191           GtkStockItem item;
1192           const char *stock_id = NULL;
1193
1194           atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
1195
1196           switch (message_type)
1197             {
1198             case GTK_MESSAGE_INFO:
1199               stock_id = GTK_STOCK_DIALOG_INFO;
1200               break;
1201
1202             case GTK_MESSAGE_QUESTION:
1203               stock_id = GTK_STOCK_DIALOG_QUESTION;
1204               break;
1205
1206             case GTK_MESSAGE_WARNING:
1207               stock_id = GTK_STOCK_DIALOG_WARNING;
1208               break;
1209
1210             case GTK_MESSAGE_ERROR:
1211               stock_id = GTK_STOCK_DIALOG_ERROR;
1212               break;
1213
1214             case GTK_MESSAGE_OTHER:
1215               break;
1216
1217             default:
1218               g_warning ("Unknown GtkMessageType %u", message_type);
1219               break;
1220             }
1221
1222           if (stock_id)
1223             {
1224               gtk_stock_lookup (stock_id, &item);
1225               atk_object_set_name (atk_obj, item.label);
1226             }
1227         }
1228
1229       g_object_notify (G_OBJECT (info_bar), "message-type");
1230     }
1231 }
1232
1233 /**
1234  * gtk_info_bar_get_message_type:
1235  * @info_bar: a #GtkInfoBar
1236  *
1237  * Returns the message type of the message area.
1238  *
1239  * Returns: the message type of the message area.
1240  *
1241  * Since: 2.18
1242  */
1243 GtkMessageType
1244 gtk_info_bar_get_message_type (GtkInfoBar *info_bar)
1245 {
1246   GtkInfoBarPrivate *priv;
1247
1248   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
1249
1250   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
1251
1252   return priv->message_type;
1253 }
1254
1255
1256 #define __GTK_INFO_BAR_C__
1257 #include "gtkaliasdef.c"