src/gtk-ui/gtkinfobar.c

   1 /*
   2  * gtkinfobar.c
   3  * This file is from GTK+, used here when GTK version < 2.18
   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 #include "config.h"
  32
  33 #ifndef GTK_2_18
  34 #include "gtkinfobar.h"
  35
  36 #include <string.h>
  37 #include <stdlib.h>
  38 #include <gtk/gtk.h>
  39 #include <gdk/gdkkeysyms.h>
  40
  41 #define I_(X) X
  42 #define P_(X) X
  43
  44 /**
  45  * SECTION:gtkinfobar
  46  * @short_description: Report important messages to the user
  47  * @include: gtk/gtk.h
  48  * @see_also: #GtkStatusbar, #GtkMessageDialog
  49  *
  50  * #GtkInfoBar is a widget that can be used to show messages to
  51  * the user without showing a dialog. It is often temporarily shown
  52  * at the top or bottom of a document. In contrast to #GtkDialog, which
  53  * has a horizontal action area at the bottom, #GtkInfoBar has a
  54  * vertical action area at the side.
  55  *
  56  * The API of #GtkInfoBar is very similar to #GtkDialog, allowing you
  57  * to add buttons to the action area with gtk_info_bar_add_button() or
  58  * gtk_info_bar_new_with_buttons(). The sensitivity of action widgets
  59  * can be controlled with gtk_info_bar_set_response_sensitive().
  60  * To add widgets to the main content area of a #GtkInfoBar, use
  61  * gtk_info_bar_get_content_area() and add your widgets to the container.
  62  *
  63  * Similar to #GtkMessageDialog, the contents of a #GtkInfoBar can by
  64  * classified as error message, warning, informational message, etc,
  65  * by using gtk_info_bar_set_message_type(). GTK+ uses the message type
  66  * to determine the background color of the message area.
  67  *
  68  * <example>
  69  * <title>Simple GtkInfoBar usage.</title>
  70  * <programlisting>
  71  * /&ast; set up info bar &ast;/
  72  * info_bar = gtk_info_bar_new ();
  73  * gtk_widget_set_no_show_all (info_bar, TRUE);
  74  * message_label = gtk_label_new ("");
  75  * gtk_widget_show (message_label);
  76  * content_area = gtk_info_bar_get_content_area (GTK_INFO_BAR (info_bar));
  77  * gtk_container_add (GTK_CONTAINER (content_area), message_label);
  78  * gtk_info_bar_add_button (GTK_INFO_BAR (info_bar),
  79  *                          GTK_STOCK_OK, GTK_RESPONSE_OK);
  80  * g_signal_connect (info_bar, "response",
  81  *                   G_CALLBACK (gtk_widget_hide), NULL);
  82  * gtk_table_attach (GTK_TABLE (table),
  83  *                   info_bar,
  84  *                   0, 1, 2, 3,
  85  *                   GTK_EXPAND | GTK_FILL,  0,
  86  *                   0,                      0);
  87  *
  88  * /&ast; ... &ast;/
  89  *
  90  * /&ast; show an error message &ast;/
  91  * gtk_label_set_text (GTK_LABEL (message_label), error_message);
  92  * gtk_info_bar_set_message_type (GTK_INFO_BAR (info_bar),
  93  *                                GTK_MESSAGE_ERROR);
  94  * gtk_widget_show (info_bar);
  95  * </programlisting>
  96  * </example>
  97  *
  98  * <refsect2 id="GtkInfoBar-BUILDER-UI">
  99  * <title>GtkInfoBar as GtkBuildable</title>
 100  * <para>
 101  * The GtkInfoBar implementation of the GtkBuildable interface exposes
 102  * the content area and action area as internal children with the names
 103  * "content_area" and "action_area".
 104  * </para>
 105  * <para>
 106  * GtkInfoBar supports a custom &lt;action-widgets&gt; element, which
 107  * can contain multiple &lt;action-widget&gt; elements. The "response"
 108  * attribute specifies a numeric response, and the content of the element
 109  * is the id of widget (which should be a child of the dialogs @action_area).
 110  * </para>
 111  * </refsect2>
 112  */
 113
 114 #define GTK_INFO_BAR_GET_PRIVATE(object) \
 115   (G_TYPE_INSTANCE_GET_PRIVATE ((object), \
 116                                 GTK_TYPE_INFO_BAR, \
 117                                 GtkInfoBarPrivate))
 118
 119 enum
 120 {
 121   PROP_0,
 122   PROP_MESSAGE_TYPE
 123 };
 124
 125 struct _GtkInfoBarPrivate
 126 {
 127   GtkWidget *content_area;
 128   GtkWidget *action_area;
 129
 130   GtkMessageType message_type;
 131 };
 132
 133 typedef struct _ResponseData ResponseData;
 134
 135 struct _ResponseData
 136 {
 137   gint response_id;
 138 };
 139
 140 enum
 141 {
 142   RESPONSE,
 143   CLOSE,
 144   LAST_SIGNAL
 145 };
 146
 147 static guint signals[LAST_SIGNAL];
 148
 149
 150 static void     gtk_info_bar_set_property (GObject        *object,
 151                                            guint           prop_id,
 152                                            const GValue   *value,
 153                                            GParamSpec     *pspec);
 154 static void     gtk_info_bar_get_property (GObject        *object,
 155                                            guint           prop_id,
 156                                            GValue         *value,
 157                                            GParamSpec     *pspec);
 158 static void     gtk_info_bar_style_set    (GtkWidget      *widget,
 159                                            GtkStyle       *prev_style);
 160 static gboolean gtk_info_bar_expose       (GtkWidget      *widget,
 161                                            GdkEventExpose *event);
 162 static void     gtk_info_bar_buildable_interface_init     (GtkBuildableIface *iface);
 163 static GObject *gtk_info_bar_buildable_get_internal_child (GtkBuildable  *buildable,
 164                                                            GtkBuilder    *builder,
 165                                                            const gchar   *childname);
 166 static gboolean  gtk_info_bar_buildable_custom_tag_start   (GtkBuildable  *buildable,
 167                                                             GtkBuilder    *builder,
 168                                                             GObject       *child,
 169                                                             const gchar   *tagname,
 170                                                             GMarkupParser *parser,
 171                                                             gpointer      *data);
 172 static void      gtk_info_bar_buildable_custom_finished    (GtkBuildable  *buildable,
 173                                                             GtkBuilder    *builder,
 174                                                             GObject       *child,
 175                                                             const gchar   *tagname,
 176                                                             gpointer       user_data);
 177
 178
 179 G_DEFINE_TYPE_WITH_CODE (GtkInfoBar, gtk_info_bar, GTK_TYPE_HBOX,
 180                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 181                                                 gtk_info_bar_buildable_interface_init))
 182
 183 static void
 184 gtk_info_bar_set_property (GObject      *object,
 185                            guint         prop_id,
 186                            const GValue *value,
 187                            GParamSpec   *pspec)
 188 {
 189   GtkInfoBar *info_bar;
 190   GtkInfoBarPrivate *priv;
 191
 192   info_bar = GTK_INFO_BAR (object);
 193   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 194
 195   switch (prop_id)
 196     {
 197     case PROP_MESSAGE_TYPE:
 198       gtk_info_bar_set_message_type (info_bar, g_value_get_enum (value));
 199       break;
 200     default:
 201       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 202       break;
 203     }
 204 }
 205
 206 static void
 207 gtk_info_bar_get_property (GObject    *object,
 208                            guint       prop_id,
 209                            GValue     *value,
 210                            GParamSpec *pspec)
 211 {
 212   GtkInfoBar *info_bar;
 213   GtkInfoBarPrivate *priv;
 214
 215   info_bar = GTK_INFO_BAR (object);
 216   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 217
 218   switch (prop_id)
 219     {
 220     case PROP_MESSAGE_TYPE:
 221       g_value_set_enum (value, gtk_info_bar_get_message_type (info_bar));
 222       break;
 223     default:
 224       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 225       break;
 226     }
 227 }
 228
 229 static void
 230 gtk_info_bar_finalize (GObject *object)
 231 {
 232   G_OBJECT_CLASS (gtk_info_bar_parent_class)->finalize (object);
 233 }
 234
 235 static void
 236 response_data_free (gpointer data)
 237 {
 238   g_slice_free (ResponseData, data);
 239 }
 240
 241 static ResponseData *
 242 get_response_data (GtkWidget *widget,
 243                    gboolean   create)
 244 {
 245   ResponseData *ad = g_object_get_data (G_OBJECT (widget),
 246                                         "gtk-info-bar-response-data");
 247
 248   if (ad == NULL && create)
 249     {
 250       ad = g_slice_new (ResponseData);
 251
 252       g_object_set_data_full (G_OBJECT (widget),
 253                               I_("gtk-info-bar-response-data"),
 254                               ad,
 255                               response_data_free);
 256     }
 257
 258   return ad;
 259 }
 260
 261 static GtkWidget *
 262 find_button (GtkInfoBar *info_bar,
 263              gint        response_id)
 264 {
 265   GList *children, *list;
 266   GtkWidget *child = NULL;
 267
 268   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 269
 270   for (list = children; list; list = list->next)
 271     {
 272       ResponseData *rd = get_response_data (list->data, FALSE);
 273
 274       if (rd && rd->response_id == response_id)
 275         {
 276           child = list->data;
 277           break;
 278         }
 279     }
 280
 281   g_list_free (children);
 282
 283   return child;
 284 }
 285
 286 static void
 287 gtk_info_bar_close (GtkInfoBar *info_bar)
 288 {
 289   if (!find_button (info_bar, GTK_RESPONSE_CANCEL))
 290     return;
 291
 292   gtk_info_bar_response (GTK_INFO_BAR (info_bar),
 293                          GTK_RESPONSE_CANCEL);
 294 }
 295
 296 static gboolean
 297 gtk_info_bar_expose (GtkWidget      *widget,
 298                      GdkEventExpose *event)
 299 {
 300   GtkInfoBarPrivate *priv = GTK_INFO_BAR_GET_PRIVATE (widget);
 301   const char* type_detail[] = {
 302     "infobar-info",
 303     "infobar-warning",
 304     "infobar-question",
 305     "infobar-error",
 306     "infobar"
 307   };
 308
 309   if (priv->message_type != GTK_MESSAGE_OTHER)
 310     {
 311       const char *detail;
 312
 313       detail = type_detail[priv->message_type];
 314
 315       gtk_paint_box (widget->style,
 316                      widget->window,
 317                      GTK_STATE_NORMAL,
 318                      GTK_SHADOW_OUT,
 319                      NULL,
 320                      widget,
 321                      detail,
 322                      widget->allocation.x,
 323                      widget->allocation.y,
 324                      widget->allocation.width,
 325                      widget->allocation.height);
 326     }
 327
 328   if (GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event)
 329     GTK_WIDGET_CLASS (gtk_info_bar_parent_class)->expose_event (widget, event);
 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->expose_event = gtk_info_bar_expose;
 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                                                       G_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                                                              G_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                                                              G_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                                                              G_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                                                              G_PARAM_READABLE));
 485
 486   binding_set = gtk_binding_set_by_class (klass);
 487
 488   gtk_binding_entry_add_signal (binding_set, GDK_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 = (GtkWidget*)info_bar;
 497   GtkInfoBarPrivate *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 = NULL;
 509   GdkColor *bg = NULL;
 510   GdkColor sym_fg, sym_bg;
 511   GtkStyle *style;
 512   const char* fg_color_name[] = {
 513     "info_fg_color",
 514     "warning_fg_color",
 515     "question_fg_color",
 516     "error_fg_color",
 517     "other_fg_color"
 518   };
 519   const char* bg_color_name[] = {
 520     "info_bg_color",
 521     "warning_bg_color",
 522     "question_bg_color",
 523     "error_bg_color",
 524     "other_bg_color"
 525   };
 526
 527   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 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     }
 566
 567   if (!gdk_color_equal (bg, &widget->style->bg[GTK_STATE_NORMAL]))
 568     gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, bg);
 569   if (!gdk_color_equal (fg, &widget->style->fg[GTK_STATE_NORMAL]))
 570     gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, fg);
 571 }
 572
 573 static void
 574 gtk_info_bar_style_set (GtkWidget *widget,
 575                         GtkStyle  *prev_style)
 576 {
 577   GtkInfoBar *info_bar = GTK_INFO_BAR (widget);
 578   gint button_spacing;
 579   gint action_area_border;
 580   gint content_area_spacing;
 581   gint content_area_border;
 582
 583   gtk_widget_style_get (widget,
 584                         "button-spacing", &button_spacing,
 585                         "action-area-border", &action_area_border,
 586                         "content-area-spacing", &content_area_spacing,
 587                         "content-area-border", &content_area_border,
 588                         NULL);
 589
 590   gtk_box_set_spacing (GTK_BOX (info_bar->priv->action_area), button_spacing);
 591   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->action_area),
 592                                   action_area_border);
 593   gtk_box_set_spacing (GTK_BOX (info_bar->priv->content_area), content_area_spacing);
 594   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->content_area),
 595                                   content_area_border);
 596
 597   gtk_info_bar_update_colors (info_bar);
 598 }
 599
 600 static void
 601 gtk_info_bar_init (GtkInfoBar *info_bar)
 602 {
 603   GtkWidget *content_area;
 604   GtkWidget *action_area;
 605
 606   gtk_widget_push_composite_child ();
 607
 608   info_bar->priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 609
 610   content_area = gtk_hbox_new (FALSE, 0);
 611   gtk_widget_show (content_area);
 612   gtk_box_pack_start (GTK_BOX (info_bar), content_area, TRUE, TRUE, 0);
 613
 614   action_area = gtk_vbutton_box_new ();
 615   gtk_widget_show (action_area);
 616   gtk_button_box_set_layout (GTK_BUTTON_BOX (action_area), GTK_BUTTONBOX_END);
 617   gtk_box_pack_start (GTK_BOX (info_bar), action_area, FALSE, TRUE, 0);
 618
 619   gtk_widget_set_app_paintable (GTK_WIDGET (info_bar), TRUE);
 620   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (info_bar), TRUE);
 621
 622   info_bar->priv->content_area = content_area;
 623   info_bar->priv->action_area = action_area;
 624
 625   gtk_widget_pop_composite_child ();
 626 }
 627
 628 static GtkBuildableIface *parent_buildable_iface;
 629
 630 static void
 631 gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface)
 632 {
 633   parent_buildable_iface = g_type_interface_peek_parent (iface);
 634   iface->get_internal_child = gtk_info_bar_buildable_get_internal_child;
 635   iface->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
 636   iface->custom_finished = gtk_info_bar_buildable_custom_finished;
 637 }
 638
 639 static GObject *
 640 gtk_info_bar_buildable_get_internal_child (GtkBuildable *buildable,
 641                                            GtkBuilder   *builder,
 642                                            const gchar  *childname)
 643 {
 644   if (strcmp (childname, "content_area") == 0)
 645     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->content_area);
 646   else if (strcmp (childname, "action_area") == 0)
 647     return G_OBJECT (GTK_INFO_BAR (buildable)->priv->action_area);
 648
 649   return parent_buildable_iface->get_internal_child (buildable,
 650                                                      builder,
 651                                                      childname);
 652 }
 653
 654 static gint
 655 get_response_for_widget (GtkInfoBar *info_bar,
 656                          GtkWidget  *widget)
 657 {
 658   ResponseData *rd;
 659
 660   rd = get_response_data (widget, FALSE);
 661   if (!rd)
 662     return GTK_RESPONSE_NONE;
 663   else
 664     return rd->response_id;
 665 }
 666
 667 static void
 668 action_widget_activated (GtkWidget  *widget,
 669                          GtkInfoBar *info_bar)
 670 {
 671   gint response_id;
 672
 673   response_id = get_response_for_widget (info_bar, widget);
 674   gtk_info_bar_response (info_bar, response_id);
 675 }
 676
 677 /**
 678  * gtk_info_bar_add_action_widget:
 679  * @info_bar: a #GtkInfoBar
 680  * @child: an activatable widget
 681  * @response_id: response ID for @child
 682  *
 683  * Add an activatable widget to the action area of a #GtkInfoBar,
 684  * connecting a signal handler that will emit the #GtkInfoBar::response
 685  * signal on the message area when the widget is activated. The widget
 686  * is appended to the end of the message areas action area.
 687  *
 688  * Since: 2.18
 689  */
 690 void
 691 gtk_info_bar_add_action_widget (GtkInfoBar *info_bar,
 692                                 GtkWidget  *child,
 693                                 gint        response_id)
 694 {
 695   ResponseData *ad;
 696   guint signal_id;
 697
 698   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 699   g_return_if_fail (GTK_IS_WIDGET (child));
 700
 701   ad = get_response_data (child, TRUE);
 702
 703   ad->response_id = response_id;
 704
 705   if (GTK_IS_BUTTON (child))
 706     signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
 707   else
 708     signal_id = GTK_WIDGET_GET_CLASS (child)->activate_signal;
 709
 710   if (signal_id)
 711     {
 712       GClosure *closure;
 713
 714       closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
 715                                        G_OBJECT (info_bar));
 716       g_signal_connect_closure_by_id (child, signal_id, 0, closure, FALSE);
 717     }
 718   else
 719     g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkInfoBar");
 720
 721   gtk_box_pack_end (GTK_BOX (info_bar->priv->action_area),
 722                     child, FALSE, FALSE, 0);
 723   if (response_id == GTK_RESPONSE_HELP)
 724     gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
 725                                         child, TRUE);
 726 }
 727
 728 /**
 729  * gtk_info_bar_get_action_area:
 730  * @info_bar: a #GtkInfoBar
 731  *
 732  * Returns the action area of @info_bar.
 733  *
 734  * Returns: the action area.
 735  *
 736  * Since: 2.18
 737  */
 738 GtkWidget*
 739 gtk_info_bar_get_action_area (GtkInfoBar *info_bar)
 740 {
 741   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 742
 743   return info_bar->priv->action_area;
 744 }
 745
 746 /**
 747  * gtk_info_bar_get_content_area:
 748  * @info_bar: a #GtkInfoBar
 749  *
 750  * Returns the content area of @info_bar.
 751  *
 752  * Returns: the content area.
 753  *
 754  * Since: 2.18
 755  */
 756 GtkWidget*
 757 gtk_info_bar_get_content_area (GtkInfoBar *info_bar)
 758 {
 759   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 760
 761   return info_bar->priv->content_area;
 762 }
 763
 764 /**
 765  * gtk_info_bar_add_button:
 766  * @info_bar: a #GtkInfoBar
 767  * @button_text: text of button, or stock ID
 768  * @response_id: response ID for the button
 769  *
 770  * Adds a button with the given text (or a stock button, if button_text
 771  * is a stock ID) and sets things up so that clicking the button will emit
 772  * the "response" signal with the given response_id. The button is appended
 773  * to the end of the info bars's action area. The button widget is
 774  * returned, but usually you don't need it.
 775  *
 776  * Returns: the button widget that was added
 777  *
 778  * Since: 2.18
 779  */
 780 GtkWidget*
 781 gtk_info_bar_add_button (GtkInfoBar  *info_bar,
 782                          const gchar *button_text,
 783                          gint         response_id)
 784 {
 785   GtkWidget *button;
 786
 787   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), NULL);
 788   g_return_val_if_fail (button_text != NULL, NULL);
 789
 790   button = gtk_button_new_from_stock (button_text);
 791
 792   GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
 793
 794   gtk_widget_show (button);
 795
 796   gtk_info_bar_add_action_widget (info_bar, button, response_id);
 797
 798   return button;
 799 }
 800
 801 static void
 802 add_buttons_valist (GtkInfoBar  *info_bar,
 803                     const gchar *first_button_text,
 804                     va_list      args)
 805 {
 806   const gchar* text;
 807   gint response_id;
 808
 809   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 810
 811   if (first_button_text == NULL)
 812     return;
 813
 814   text = first_button_text;
 815   response_id = va_arg (args, gint);
 816
 817   while (text != NULL)
 818     {
 819       gtk_info_bar_add_button (info_bar, text, response_id);
 820
 821       text = va_arg (args, gchar*);
 822       if (text == NULL)
 823         break;
 824
 825       response_id = va_arg (args, int);
 826     }
 827 }
 828
 829 /**
 830  * gtk_info_bar_add_buttons:
 831  * @info_bar: a #GtkInfoBar
 832  * @first_button_text: button text or stock ID
 833  * @...: response ID for first button, then more text-response_id pairs,
 834  *     ending with %NULL
 835  *
 836  * Adds more buttons, same as calling gtk_info_bar_add_button()
 837  * repeatedly. The variable argument list should be %NULL-terminated
 838  * as with gtk_info_bar_new_with_buttons(). Each button must have both
 839  * text and response ID.
 840  *
 841  * Since: 2.18
 842  */
 843 void
 844 gtk_info_bar_add_buttons (GtkInfoBar  *info_bar,
 845                           const gchar *first_button_text,
 846                           ...)
 847 {
 848   va_list args;
 849
 850   va_start (args, first_button_text);
 851   add_buttons_valist (info_bar, first_button_text, args);
 852   va_end (args);
 853 }
 854
 855 /**
 856  * gtk_info_bar_new:
 857  *
 858  * Creates a new #GtkInfoBar object.
 859  *
 860  * Returns: a new #GtkInfoBar object
 861  *
 862  * Since: 2.18
 863  */
 864 GtkWidget *
 865 gtk_info_bar_new (void)
 866 {
 867    return g_object_new (GTK_TYPE_INFO_BAR, NULL);
 868 }
 869
 870 /**
 871  * gtk_info_bar_new_with_buttons:
 872  * @first_button_text: stock ID or text to go in first button, or %NULL
 873  * @...: response ID for first button, then additional buttons, ending
 874  *    with %NULL
 875  *
 876  * Creates a new #GtkInfoBar with buttons. Button text/response ID
 877  * pairs should be listed, with a %NULL pointer ending the list.
 878  * Button text can be either a stock ID such as %GTK_STOCK_OK, or
 879  * some arbitrary text. A response ID can be any positive number,
 880  * or one of the values in the #GtkResponseType enumeration. If the
 881  * user clicks one of these dialog buttons, GtkInfoBar will emit
 882  * the "response" signal with the corresponding response ID.
 883  *
 884  * Returns: a new #GtkInfoBar
 885  */
 886 GtkWidget*
 887 gtk_info_bar_new_with_buttons (const gchar *first_button_text,
 888                                ...)
 889 {
 890   GtkInfoBar *info_bar;
 891   va_list args;
 892
 893   info_bar = GTK_INFO_BAR (gtk_info_bar_new ());
 894
 895   va_start (args, first_button_text);
 896   add_buttons_valist (info_bar, first_button_text, args);
 897   va_end (args);
 898
 899   return GTK_WIDGET (info_bar);
 900 }
 901
 902 /**
 903  * gtk_info_bar_set_response_sensitive:
 904  * @info_bar: a #GtkInfoBar
 905  * @response_id: a response ID
 906  * @setting: TRUE for sensitive
 907  *
 908  * Calls gtk_widget_set_sensitive (widget, setting) for each
 909  * widget in the info bars's action area with the given response_id.
 910  * A convenient way to sensitize/desensitize dialog buttons.
 911  *
 912  * Since: 2.18
 913  */
 914 void
 915 gtk_info_bar_set_response_sensitive (GtkInfoBar *info_bar,
 916                                      gint        response_id,
 917                                      gboolean    setting)
 918 {
 919   GList *children, *list;
 920
 921   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 922
 923   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 924
 925   for (list = children; list; list = list->next)
 926     {
 927       GtkWidget *widget = list->data;
 928       ResponseData *rd = get_response_data (widget, FALSE);
 929
 930       if (rd && rd->response_id == response_id)
 931         gtk_widget_set_sensitive (widget, setting);
 932     }
 933
 934   g_list_free (children);
 935 }
 936
 937 /**
 938  * gtk_info_bar_set_default_response:
 939  * @info_bar: a #GtkInfoBar
 940  * @response_id: a response ID
 941  *
 942  * Sets the last widget in the info bar's action area with
 943  * the given response_id as the default widget for the dialog.
 944  * Pressing "Enter" normally activates the default widget.
 945  *
 946  * Since: 2.18
 947  */
 948 void
 949 gtk_info_bar_set_default_response (GtkInfoBar *info_bar,
 950                                    gint        response_id)
 951 {
 952   GList *children, *list;
 953
 954   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 955
 956   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 957
 958   for (list = children; list; list = list->next)
 959     {
 960       GtkWidget *widget = list->data;
 961       ResponseData *rd = get_response_data (widget, FALSE);
 962
 963       if (rd && rd->response_id == response_id)
 964         gtk_widget_grab_default (widget);
 965     }
 966
 967   g_list_free (children);
 968 }
 969
 970 /**
 971  * gtk_info_bar_response:
 972  * @info_bar: a #GtkInfoBar
 973  * @response_id: a response ID
 974  *
 975  * Emits the 'response' signal with the given @response_id.
 976  *
 977  * Since: 2.18
 978  */
 979 void
 980 gtk_info_bar_response (GtkInfoBar *info_bar,
 981                        gint        response_id)
 982 {
 983   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
 984
 985   g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
 986 }
 987
 988 typedef struct
 989 {
 990   gchar *widget_name;
 991   gchar *response_id;
 992 } ActionWidgetInfo;
 993
 994 typedef struct
 995 {
 996   GtkInfoBar *info_bar;
 997   GtkBuilder *builder;
 998   GSList *items;
 999   gchar *response;
1000 } ActionWidgetsSubParserData;
1001
1002 static void
1003 attributes_start_element (GMarkupParseContext  *context,
1004                           const gchar          *element_name,
1005                           const gchar         **names,
1006                           const gchar         **values,
1007                           gpointer              user_data,
1008                           GError              **error)
1009 {
1010   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1011   guint i;
1012
1013   if (strcmp (element_name, "action-widget") == 0)
1014     {
1015       for (i = 0; names[i]; i++)
1016         if (strcmp (names[i], "response") == 0)
1017           parser_data->response = g_strdup (values[i]);
1018     }
1019   else if (strcmp (element_name, "action-widgets") == 0)
1020     return;
1021   else
1022     g_warning ("Unsupported tag for GtkInfoBar: %s\n", element_name);
1023 }
1024
1025 static void
1026 attributes_text_element (GMarkupParseContext  *context,
1027                          const gchar          *text,
1028                          gsize                 text_len,
1029                          gpointer              user_data,
1030                          GError              **error)
1031 {
1032   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1033   ActionWidgetInfo *item;
1034
1035   if (!parser_data->response)
1036     return;
1037
1038   item = g_new (ActionWidgetInfo, 1);
1039   item->widget_name = g_strndup (text, text_len);
1040   item->response_id = parser_data->response;
1041   parser_data->items = g_slist_prepend (parser_data->items, item);
1042   parser_data->response = NULL;
1043 }
1044
1045 static const GMarkupParser attributes_parser =
1046 {
1047   attributes_start_element,
1048   NULL,
1049   attributes_text_element,
1050 };
1051
1052 gboolean
1053 gtk_info_bar_buildable_custom_tag_start (GtkBuildable  *buildable,
1054                                          GtkBuilder    *builder,
1055                                          GObject       *child,
1056                                          const gchar   *tagname,
1057                                          GMarkupParser *parser,
1058                                          gpointer      *data)
1059 {
1060   ActionWidgetsSubParserData *parser_data;
1061
1062   if (child)
1063     return FALSE;
1064
1065   if (strcmp (tagname, "action-widgets") == 0)
1066     {
1067       parser_data = g_slice_new0 (ActionWidgetsSubParserData);
1068       parser_data->info_bar = GTK_INFO_BAR (buildable);
1069       parser_data->items = NULL;
1070
1071       *parser = attributes_parser;
1072       *data = parser_data;
1073       return TRUE;
1074     }
1075
1076   return parent_buildable_iface->custom_tag_start (buildable, builder, child,
1077                                                    tagname, parser, data);
1078 }
1079
1080 static void
1081 gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
1082                                         GtkBuilder   *builder,
1083                                         GObject      *child,
1084                                         const gchar  *tagname,
1085                                         gpointer      user_data)
1086 {
1087   GSList *l;
1088   ActionWidgetsSubParserData *parser_data;
1089   GObject *object;
1090   GtkInfoBar *info_bar;
1091   ResponseData *ad;
1092   guint signal_id;
1093
1094   if (strcmp (tagname, "action-widgets"))
1095     {
1096       parent_buildable_iface->custom_finished (buildable, builder, child,
1097                                                tagname, user_data);
1098       return;
1099     }
1100
1101   info_bar = GTK_INFO_BAR (buildable);
1102   parser_data = (ActionWidgetsSubParserData*)user_data;
1103   parser_data->items = g_slist_reverse (parser_data->items);
1104
1105   for (l = parser_data->items; l; l = l->next)
1106     {
1107       ActionWidgetInfo *item = l->data;
1108
1109       object = gtk_builder_get_object (builder, item->widget_name);
1110       if (!object)
1111         {
1112           g_warning ("Unknown object %s specified in action-widgets of %s",
1113                      item->widget_name,
1114                      gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
1115           continue;
1116         }
1117
1118       ad = get_response_data (GTK_WIDGET (object), TRUE);
1119       ad->response_id = atoi (item->response_id);
1120
1121       if (GTK_IS_BUTTON (object))
1122         signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
1123       else
1124         signal_id = GTK_WIDGET_GET_CLASS (object)->activate_signal;
1125
1126       if (signal_id)
1127         {
1128           GClosure *closure;
1129
1130           closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
1131                                            G_OBJECT (info_bar));
1132           g_signal_connect_closure_by_id (object,
1133                                           signal_id,
1134                                           0,
1135                                           closure,
1136                                           FALSE);
1137         }
1138
1139       if (ad->response_id == GTK_RESPONSE_HELP)
1140         gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
1141                                             GTK_WIDGET (object), TRUE);
1142
1143       g_free (item->widget_name);
1144       g_free (item->response_id);
1145       g_free (item);
1146     }
1147   g_slist_free (parser_data->items);
1148   g_slice_free (ActionWidgetsSubParserData, parser_data);
1149 }
1150
1151 /**
1152  * gtk_info_bar_set_message_type:
1153  * @info_bar: a #GtkInfoBar
1154  * @message_type: a #GtkMessageType
1155  *
1156  * Sets the message type of the message area.
1157  * GTK+ uses this type to determine what color to use
1158  * when drawing the message area.
1159  *
1160  * Since: 2.18
1161  */
1162 void
1163 gtk_info_bar_set_message_type (GtkInfoBar     *info_bar,
1164                                GtkMessageType  message_type)
1165 {
1166   GtkInfoBarPrivate *priv;
1167   AtkObject *atk_obj;
1168
1169   g_return_if_fail (GTK_IS_INFO_BAR (info_bar));
1170
1171   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
1172
1173   if (priv->message_type != message_type)
1174     {
1175       priv->message_type = message_type;
1176
1177       gtk_info_bar_update_colors (info_bar);
1178       gtk_widget_queue_draw (GTK_WIDGET (info_bar));
1179
1180       atk_obj = gtk_widget_get_accessible (GTK_WIDGET (info_bar));
1181       if (GTK_IS_ACCESSIBLE (atk_obj))
1182         {
1183           GtkStockItem item;
1184           const char *stock_id = NULL;
1185
1186           atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
1187
1188           switch (message_type)
1189             {
1190             case GTK_MESSAGE_INFO:
1191               stock_id = GTK_STOCK_DIALOG_INFO;
1192               break;
1193
1194             case GTK_MESSAGE_QUESTION:
1195               stock_id = GTK_STOCK_DIALOG_QUESTION;
1196               break;
1197
1198             case GTK_MESSAGE_WARNING:
1199               stock_id = GTK_STOCK_DIALOG_WARNING;
1200               break;
1201
1202             case GTK_MESSAGE_ERROR:
1203               stock_id = GTK_STOCK_DIALOG_ERROR;
1204               break;
1205
1206             case GTK_MESSAGE_OTHER:
1207               break;
1208
1209             default:
1210               g_warning ("Unknown GtkMessageType %u", message_type);
1211               break;
1212             }
1213
1214           if (stock_id)
1215             {
1216               gtk_stock_lookup (stock_id, &item);
1217               atk_object_set_name (atk_obj, item.label);
1218             }
1219         }
1220
1221       g_object_notify (G_OBJECT (info_bar), "message-type");
1222     }
1223 }
1224
1225 /**
1226  * gtk_info_bar_get_message_type:
1227  * @info_bar: a #GtkInfoBar
1228  *
1229  * Returns the message type of the message area.
1230  *
1231  * Returns: the message type of the message area.
1232  *
1233  * Since: 2.18
1234  */
1235 GtkMessageType
1236 gtk_info_bar_get_message_type (GtkInfoBar *info_bar)
1237 {
1238   GtkInfoBarPrivate *priv;
1239
1240   g_return_val_if_fail (GTK_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
1241
1242   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
1243
1244   return priv->message_type;
1245 }
1246
1247
1248 #define __GTK_INFO_BAR_C__
1249
1250 #endif