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   GdkColor info_default_border_color     = { 0, 0xb800, 0xad00, 0x9d00 };
 499   GdkColor info_default_fill_color       = { 0, 0xff00, 0xff00, 0xbf00 };
 500   GdkColor warning_default_border_color  = { 0, 0xb000, 0x7a00, 0x2b00 };
 501   GdkColor warning_default_fill_color    = { 0, 0xfc00, 0xaf00, 0x3e00 };
 502   GdkColor question_default_border_color = { 0, 0x6200, 0x7b00, 0xd960 };
 503   GdkColor question_default_fill_color   = { 0, 0x8c00, 0xb000, 0xd700 };
 504   GdkColor error_default_border_color    = { 0, 0xa800, 0x2700, 0x2700 };
 505   GdkColor error_default_fill_color      = { 0, 0xf000, 0x3800, 0x3800 };
 506   GdkColor other_default_border_color    = { 0, 0xb800, 0xad00, 0x9d00 };
 507   GdkColor other_default_fill_color      = { 0, 0xff00, 0xff00, 0xbf00 };
 508   GdkColor *fg, *bg;
 509   GdkColor sym_fg, sym_bg;
 510   GtkStyle *style;
 511   const char* fg_color_name[] = {
 512     "info_fg_color",
 513     "warning_fg_color",
 514     "question_fg_color",
 515     "error_fg_color",
 516     "other_fg_color"
 517   };
 518   const char* bg_color_name[] = {
 519     "info_bg_color",
 520     "warning_bg_color",
 521     "question_bg_color",
 522     "error_bg_color",
 523     "other_bg_color"
 524   };
 525
 526   style = gtk_widget_get_style (widget);
 527
 528   if (gtk_style_lookup_color (style, fg_color_name[priv->message_type], &sym_fg) &&
 529       gtk_style_lookup_color (style, bg_color_name[priv->message_type], &sym_bg))
 530     {
 531       fg = &sym_fg;
 532       bg = &sym_bg;
 533     }
 534   else
 535     {
 536       switch (priv->message_type)
 537         {
 538         case GTK_MESSAGE_INFO:
 539           fg = &info_default_border_color;
 540           bg = &info_default_fill_color;
 541           break;
 542
 543         case GTK_MESSAGE_WARNING:
 544           fg = &warning_default_border_color;
 545           bg = &warning_default_fill_color;
 546           break;
 547
 548         case GTK_MESSAGE_QUESTION:
 549           fg = &question_default_border_color;
 550           bg = &question_default_fill_color;
 551           break;
 552
 553         case GTK_MESSAGE_ERROR:
 554           fg = &error_default_border_color;
 555           bg = &error_default_fill_color;
 556           break;
 557
 558         case GTK_MESSAGE_OTHER:
 559           fg = &other_default_border_color;
 560           bg = &other_default_fill_color;
 561           break;
 562
 563         default:
 564           g_assert_not_reached();
 565           fg = NULL;
 566           bg = NULL;
 567         }
 568     }
 569
 570   if (!gdk_color_equal (bg, &style->bg[GTK_STATE_NORMAL]))
 571     gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, bg);
 572   if (!gdk_color_equal (fg, &style->fg[GTK_STATE_NORMAL]))
 573     gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, fg);
 574 }
 575
 576 static void
 577 gtk_info_bar_style_set (GtkWidget *widget,
 578                         GtkStyle  *prev_style)
 579 {
 580   GtkInfoBar *info_bar = GTK_INFO_BAR (widget);
 581   gint button_spacing;
 582   gint action_area_border;
 583   gint content_area_spacing;
 584   gint content_area_border;
 585
 586   gtk_widget_style_get (widget,
 587                         "button-spacing", &button_spacing,
 588                         "action-area-border", &action_area_border,
 589                         "content-area-spacing", &content_area_spacing,
 590                         "content-area-border", &content_area_border,
 591                         NULL);
 592
 593   gtk_box_set_spacing (GTK_BOX (info_bar->priv->action_area), button_spacing);
 594   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->action_area),
 595                                   action_area_border);
 596   gtk_box_set_spacing (GTK_BOX (info_bar->priv->content_area), content_area_spacing);
 597   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->content_area),
 598                                   content_area_border);
 599
 600   gtk_info_bar_update_colors (info_bar);
 601 }
 602
 603 static void
 604 gtk_info_bar_init (GtkInfoBar *info_bar)
 605 {
 606   GtkWidget *content_area;
 607   GtkWidget *action_area;
 608
 609   gtk_widget_push_composite_child ();
 610
 611   info_bar->priv = G_TYPE_INSTANCE_GET_PRIVATE (info_bar,
 612                                                 GTK_TYPE_INFO_BAR,
 613                                                 GtkInfoBarPrivate);
 614
 615   content_area = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, FALSE, 0);
 616   gtk_widget_show (content_area);
 617   gtk_box_pack_start (GTK_BOX (info_bar), content_area, TRUE, TRUE, 0);
 618
 619   action_area = gtk_button_box_new (GTK_ORIENTATION_VERTICAL);
 620   gtk_widget_show (action_area);
 621   gtk_button_box_set_layout (GTK_BUTTON_BOX (action_area), GTK_BUTTONBOX_END);
 622   gtk_box_pack_start (GTK_BOX (info_bar), action_area, FALSE, TRUE, 0);
 623
 624   gtk_widget_set_app_paintable (GTK_WIDGET (info_bar), TRUE);
 625   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (info_bar), TRUE);
 626
 627   info_bar->priv->content_area = content_area;
 628   info_bar->priv->action_area = action_area;
 629
 630   gtk_widget_pop_composite_child ();
 631 }
 632
 633 static GtkBuildableIface *parent_buildable_iface;
 634
 635 static void
 636 gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface)
 637 {
 638   parent_buildable_iface = g_type_interface_peek_parent (iface);
 639   iface->get_internal_child = gtk_info_bar_buildable_get_internal_child;
 640   iface->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
 641   iface->custom_finished = gtk_info_bar_buildable_custom_finished;
 642 }
 643
 644 static GObject *
 645 gtk_info_bar_buildable_get_internal_child (GtkBuildable *buildable,
 646                                            GtkBuilder   *builder,
 647                                            const gchar  *childname)
 648 {
 649   if (strcmp (childname, "content_area") == 0)
 650     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->content_area);
 651   else if (strcmp (childname, "action_area") == 0)
 652     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->action_area);
 653
 654   return parent_buildable_iface->get_internal_child (buildable,
 655                                                      builder,
 656                                                      childname);
 657 }
 658
 659 static gint
 660 get_response_for_widget (GtkInfoBar *info_bar,
 661                          GtkWidget  *widget)
 662 {
 663   ResponseData *rd;
 664
 665   rd = get_response_data (widget, FALSE);
 666   if (!rd)
 667     return GTK_RESPONSE_NONE;
 668   else
 669     return rd->response_id;
 670 }
 671
 672 static void
 673 action_widget_activated (GtkWidget  *widget,
 674                          GtkInfoBar *info_bar)
 675 {
 676   gint response_id;
 677
 678   response_id = get_response_for_widget (info_bar, widget);
 679   gtk_info_bar_response (info_bar, response_id);
 680 }
 681
 682 /**
 683  * gtk_info_bar_add_action_widget:
 684  * @info_bar: a #GtkInfoBar
 685  * @child: an activatable widget
 686  * @response_id: response ID for @child
 687  *
 688  * Add an activatable widget to the action area of a #GtkInfoBar,
 689  * connecting a signal handler that will emit the #GtkInfoBar::response
 690  * signal on the message area when the widget is activated. The widget
 691  * is appended to the end of the message areas action area.
 692  *
 693  * Since: 2.18
 694  */
 695 void
 696 gtk_info_bar_add_action_widget (GtkInfoBar *info_bar,
 697                                 GtkWidget  *child,
 698                                 gint        response_id)
 699 {
 700   ResponseData *ad;
 701   guint signal_id;
 702
 703   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 704   g_return_if_fail (GTK_IS_WIDGET (child));
 705
 706   ad = get_response_data (child, TRUE);
 707
 708   ad->response_id = response_id;
 709
 710   if (GTK_IS_BUTTON (child))
 711     signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
 712   else
 713     signal_id = GTK_WIDGET_GET_CLASS (child)->activate_signal;
 714
 715   if (signal_id)
 716     {
 717       GClosure *closure;
 718
 719       closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
 720                                        G_OBJECT (info_bar));
 721       g_signal_connect_closure_by_id (child, signal_id, 0, closure, FALSE);
 722     }
 723   else
 724     g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkInfoBar");
 725
 726   gtk_box_pack_end (GTK_BOX (info_bar->priv->action_area),
 727                     child, FALSE, FALSE, 0);
 728   if (response_id == GTK_RESPONSE_HELP)
 729     gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
 730                                         child, TRUE);
 731 }
 732
 733 /**
 734  * gtk_info_bar_get_action_area:
 735  * @info_bar: a #GtkInfoBar
 736  *
 737  * Returns the action area of @info_bar.
 738  *
 739  * Returns: (transfer none): the action area
 740  *
 741  * Since: 2.18
 742  */
 743 GtkWidget*
 744 gtk_info_bar_get_action_area (GtkInfoBar *info_bar)
 745 {
 746   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 747
 748   return info_bar->priv->action_area;
 749 }
 750
 751 /**
 752  * gtk_info_bar_get_content_area:
 753  * @info_bar: a #GtkInfoBar
 754  *
 755  * Returns the content area of @info_bar.
 756  *
 757  * Returns: (transfer none): the content area
 758  *
 759  * Since: 2.18
 760  */
 761 GtkWidget*
 762 gtk_info_bar_get_content_area (GtkInfoBar *info_bar)
 763 {
 764   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 765
 766   return info_bar->priv->content_area;
 767 }
 768
 769 /**
 770  * gtk_info_bar_add_button:
 771  * @info_bar: a #GtkInfoBar
 772  * @button_text: text of button, or stock ID
 773  * @response_id: response ID for the button
 774  *
 775  * Adds a button with the given text (or a stock button, if button_text
 776  * is a stock ID) and sets things up so that clicking the button will emit
 777  * the "response" signal with the given response_id. The button is appended
 778  * to the end of the info bars's action area. The button widget is
 779  * returned, but usually you don't need it.
 780  *
 781  * Returns: (transfer none): the button widget that was added
 782  *
 783  * Since: 2.18
 784  */
 785 GtkWidget*
 786 gtk_info_bar_add_button (GtkInfoBar  *info_bar,
 787                          const gchar *button_text,
 788                          gint         response_id)
 789 {
 790   GtkWidget *button;
 791
 792   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 793   g_return_val_if_fail (button_text != NULL, NULL);
 794
 795   button = gtk_button_new_from_stock (button_text);
 796
 797   gtk_widget_set_can_default (button, TRUE);
 798
 799   gtk_widget_show (button);
 800
 801   gtk_info_bar_add_action_widget (info_bar, button, response_id);
 802
 803   return button;
 804 }
 805
 806 static void
 807 add_buttons_valist (GtkInfoBar  *info_bar,
 808                     const gchar *first_button_text,
 809                     va_list      args)
 810 {
 811   const gchar* text;
 812   gint response_id;
 813
 814   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 815
 816   if (first_button_text == NULL)
 817     return;
 818
 819   text = first_button_text;
 820   response_id = va_arg (args, gint);
 821
 822   while (text != NULL)
 823     {
 824       gtk_info_bar_add_button (info_bar, text, response_id);
 825
 826       text = va_arg (args, gchar*);
 827       if (text == NULL)
 828         break;
 829
 830       response_id = va_arg (args, int);
 831     }
 832 }
 833
 834 /**
 835  * gtk_info_bar_add_buttons:
 836  * @info_bar: a #GtkInfoBar
 837  * @first_button_text: button text or stock ID
 838  * @...: response ID for first button, then more text-response_id pairs,
 839  *     ending with %NULL
 840  *
 841  * Adds more buttons, same as calling gtk_info_bar_add_button()
 842  * repeatedly. The variable argument list should be %NULL-terminated
 843  * as with gtk_info_bar_new_with_buttons(). Each button must have both
 844  * text and response ID.
 845  *
 846  * Since: 2.18
 847  */
 848 void
 849 gtk_info_bar_add_buttons (GtkInfoBar  *info_bar,
 850                           const gchar *first_button_text,
 851                           ...)
 852 {
 853   va_list args;
 854
 855   va_start (args, first_button_text);
 856   add_buttons_valist (info_bar, first_button_text, args);
 857   va_end (args);
 858 }
 859
 860 /**
 861  * gtk_info_bar_new:
 862  *
 863  * Creates a new #GtkInfoBar object.
 864  *
 865  * Returns: a new #GtkInfoBar object
 866  *
 867  * Since: 2.18
 868  */
 869 GtkWidget *
 870 gtk_info_bar_new (void)
 871 {
 872    return g_object_new (GTK_TYPE_INFO_BAR, NULL);
 873 }
 874
 875 /**
 876  * gtk_info_bar_new_with_buttons:
 877  * @first_button_text: (allow-none): stock ID or text to go in first button, or %NULL
 878  * @...: response ID for first button, then additional buttons, ending
 879  *    with %NULL
 880  *
 881  * Creates a new #GtkInfoBar with buttons. Button text/response ID
 882  * pairs should be listed, with a %NULL pointer ending the list.
 883  * Button text can be either a stock ID such as %GTK_STOCK_OK, or
 884  * some arbitrary text. A response ID can be any positive number,
 885  * or one of the values in the #GtkResponseType enumeration. If the
 886  * user clicks one of these dialog buttons, GtkInfoBar will emit
 887  * the "response" signal with the corresponding response ID.
 888  *
 889  * Returns: a new #GtkInfoBar
 890  */
 891 GtkWidget*
 892 gtk_info_bar_new_with_buttons (const gchar *first_button_text,
 893                                ...)
 894 {
 895   GtkInfoBar *info_bar;
 896   va_list args;
 897
 898   info_bar = GTK_INFO_BAR (gtk_info_bar_new ());
 899
 900   va_start (args, first_button_text);
 901   add_buttons_valist (info_bar, first_button_text, args);
 902   va_end (args);
 903
 904   return GTK_WIDGET (info_bar);
 905 }
 906
 907 /**
 908  * gtk_info_bar_set_response_sensitive:
 909  * @info_bar: a #GtkInfoBar
 910  * @response_id: a response ID
 911  * @setting: TRUE for sensitive
 912  *
 913  * Calls gtk_widget_set_sensitive (widget, setting) for each
 914  * widget in the info bars's action area with the given response_id.
 915  * A convenient way to sensitize/desensitize dialog buttons.
 916  *
 917  * Since: 2.18
 918  */
 919 void
 920 gtk_info_bar_set_response_sensitive (GtkInfoBar *info_bar,
 921                                      gint        response_id,
 922                                      gboolean    setting)
 923 {
 924   GList *children, *list;
 925
 926   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 927
 928   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 929
 930   for (list = children; list; list = list->next)
 931     {
 932       GtkWidget *widget = list->data;
 933       ResponseData *rd = get_response_data (widget, FALSE);
 934
 935       if (rd && rd->response_id == response_id)
 936         gtk_widget_set_sensitive (widget, setting);
 937     }
 938
 939   g_list_free (children);
 940 }
 941
 942 /**
 943  * gtk_info_bar_set_default_response:
 944  * @info_bar: a #GtkInfoBar
 945  * @response_id: a response ID
 946  *
 947  * Sets the last widget in the info bar's action area with
 948  * the given response_id as the default widget for the dialog.
 949  * Pressing "Enter" normally activates the default widget.
 950  *
 951  * Note that this function currently requires @info_bar to
 952  * be added to a widget hierarchy.
 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 = info_bar->priv;
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   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
1247
1248   return info_bar->priv->message_type;
1249 }