cut-n-paste/evinfobar/evinfobar.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 #include <string.h>
  36
  37 #include "evinfobar.h"
  38
  39 #include <gdk/gdkkeysyms.h>
  40
  41 /**
  42  * SECTION:gtkinfobar
  43  * @short_description: Report important messages to the user
  44  * @include: gtk/gtk.h
  45  * @see_also: #GtkStatusbar, #GtkMessageDialog
  46  *
  47  * #GtkInfoBar is a widget that can be used to show messages to
  48  * the user without showing a dialog. It is often temporarily shown
  49  * at the top or bottom of a document. In contrast to #GtkDialog, which
  50  * has a horizontal action area at the bottom, #GtkInfoBar has a
  51  * vertical action area at the side.
  52  *
  53  * The API of #GtkInfoBar is very similar to #GtkDialog, allowing you
  54  * to add buttons to the action area with gtk_info_bar_add_button() or
  55  * gtk_info_bar_new_with_buttons(). The sensitivity of action widgets
  56  * can be controlled with gtk_info_bar_set_response_sensitive().
  57  * To add widgets to the main content area of a #GtkInfoBar, use
  58  * gtk_info_bar_get_content_area() and add your widgets to the container.
  59  *
  60  * Similar to #GtkMessageDialog, the contents of a #GtkInfoBar can by
  61  * classified as error message, warning, informational message, etc,
  62  * by using gtk_info_bar_set_message_type(). GTK+ uses the message type
  63  * to determine the background color of the message area.
  64  *
  65  * <example>
  66  * <title>Simple GtkInfoBar usage.</title>
  67  * <programlisting>
  68  * /&ast; set up info bar &ast;/
  69  * info_bar = gtk_info_bar_new ();
  70  * gtk_widget_set_no_show_all (info_bar, TRUE);
  71  * message_label = gtk_label_new ("");
  72  * gtk_widget_show (message_label);
  73  * content_area = gtk_info_bar_get_content_area (GTK_INFO_BAR (info_bar));
  74  * gtk_container_add (GTK_CONTAINER (content_area), message_label);
  75  * gtk_info_bar_add_button (GTK_INFO_BAR (info_bar),
  76  *                          GTK_STOCK_OK, GTK_RESPONSE_OK);
  77  * g_signal_connect (info_bar, "response",
  78  *                   G_CALLBACK (gtk_widget_hide), NULL);
  79  * gtk_table_attach (GTK_TABLE (table),
  80  *                   info_bar,
  81  *                   0, 1, 2, 3,
  82  *                   GTK_EXPAND | GTK_FILL,  0,
  83  *                   0,                      0);
  84  *
  85  * /&ast; ... &ast;/
  86  *
  87  * /&ast; show an error message &ast;/
  88  * gtk_label_set_text (GTK_LABEL (message_label), error_message);
  89  * gtk_info_bar_set_message_type (GTK_INFO_BAR (info_bar),
  90  *                                GTK_MESSAGE_ERROR);
  91  * gtk_widget_show (info_bar);
  92  * </programlisting>
  93  * </example>
  94  *
  95  * <refsect2 id="GtkInfoBar-BUILDER-UI">
  96  * <title>GtkInfoBar as GtkBuildable</title>
  97  * <para>
  98  * The GtkInfoBar implementation of the GtkBuildable interface exposes
  99  * the content area and action area as internal children with the names
 100  * "content_area" and "action_area".
 101  * </para>
 102  * <para>
 103  * GtkInfoBar supports a custom &lt;action-widgets&gt; element, which
 104  * can contain multiple &lt;action-widget&gt; elements. The "response"
 105  * attribute specifies a numeric response, and the content of the element
 106  * is the id of widget (which should be a child of the dialogs @action_area).
 107  * </para>
 108  * </refsect2>
 109  */
 110
 111 #define GTK_INFO_BAR_GET_PRIVATE(object) \
 112   (G_TYPE_INSTANCE_GET_PRIVATE ((object), \
 113                                 EV_TYPE_INFO_BAR, \
 114                                 EvInfoBarPrivate))
 115
 116 enum
 117 {
 118   PROP_0,
 119   PROP_MESSAGE_TYPE
 120 };
 121
 122 struct _EvInfoBarPrivate
 123 {
 124   GtkWidget *content_area;
 125   GtkWidget *action_area;
 126
 127   GtkMessageType message_type;
 128 };
 129
 130 typedef struct _ResponseData ResponseData;
 131
 132 struct _ResponseData
 133 {
 134   gint response_id;
 135 };
 136
 137 enum
 138 {
 139   RESPONSE,
 140   CLOSE,
 141   LAST_SIGNAL
 142 };
 143
 144 static guint signals[LAST_SIGNAL];
 145
 146
 147 static void     gtk_info_bar_set_property (GObject        *object,
 148                                            guint           prop_id,
 149                                            const GValue   *value,
 150                                            GParamSpec     *pspec);
 151 static void     gtk_info_bar_get_property (GObject        *object,
 152                                            guint           prop_id,
 153                                            GValue         *value,
 154                                            GParamSpec     *pspec);
 155 static void     gtk_info_bar_style_set    (GtkWidget      *widget,
 156                                            GtkStyle       *prev_style);
 157 static gboolean gtk_info_bar_expose       (GtkWidget      *widget,
 158                                            GdkEventExpose *event);
 159 static void     gtk_info_bar_buildable_interface_init     (GtkBuildableIface *iface);
 160 static GObject *gtk_info_bar_buildable_get_internal_child (GtkBuildable  *buildable,
 161                                                            GtkBuilder    *builder,
 162                                                            const gchar   *childname);
 163 static gboolean  gtk_info_bar_buildable_custom_tag_start   (GtkBuildable  *buildable,
 164                                                             GtkBuilder    *builder,
 165                                                             GObject       *child,
 166                                                             const gchar   *tagname,
 167                                                             GMarkupParser *parser,
 168                                                             gpointer      *data);
 169 static void      gtk_info_bar_buildable_custom_finished    (GtkBuildable  *buildable,
 170                                                             GtkBuilder    *builder,
 171                                                             GObject       *child,
 172                                                             const gchar   *tagname,
 173                                                             gpointer       user_data);
 174
 175
 176 G_DEFINE_TYPE_WITH_CODE (EvInfoBar, ev_info_bar, GTK_TYPE_HBOX,
 177                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 178                                                 gtk_info_bar_buildable_interface_init))
 179
 180 static void
 181 gtk_info_bar_set_property (GObject      *object,
 182                            guint         prop_id,
 183                            const GValue *value,
 184                            GParamSpec   *pspec)
 185 {
 186   EvInfoBar *info_bar;
 187   EvInfoBarPrivate *priv;
 188
 189   info_bar = EV_INFO_BAR (object);
 190   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 191
 192   switch (prop_id)
 193     {
 194     case PROP_MESSAGE_TYPE:
 195       ev_info_bar_set_message_type (info_bar, g_value_get_enum (value));
 196       break;
 197     default:
 198       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 199       break;
 200     }
 201 }
 202
 203 static void
 204 gtk_info_bar_get_property (GObject    *object,
 205                            guint       prop_id,
 206                            GValue     *value,
 207                            GParamSpec *pspec)
 208 {
 209   EvInfoBar *info_bar;
 210   EvInfoBarPrivate *priv;
 211
 212   info_bar = EV_INFO_BAR (object);
 213   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 214
 215   switch (prop_id)
 216     {
 217     case PROP_MESSAGE_TYPE:
 218       g_value_set_enum (value, ev_info_bar_get_message_type (info_bar));
 219       break;
 220     default:
 221       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 222       break;
 223     }
 224 }
 225
 226 static void
 227 gtk_info_bar_finalize (GObject *object)
 228 {
 229   G_OBJECT_CLASS (ev_info_bar_parent_class)->finalize (object);
 230 }
 231
 232 static void
 233 response_data_free (gpointer data)
 234 {
 235   g_slice_free (ResponseData, data);
 236 }
 237
 238 static ResponseData *
 239 get_response_data (GtkWidget *widget,
 240                    gboolean   create)
 241 {
 242   ResponseData *ad = g_object_get_data (G_OBJECT (widget),
 243                                         "gtk-info-bar-response-data");
 244
 245   if (ad == NULL && create)
 246     {
 247       ad = g_slice_new (ResponseData);
 248
 249       g_object_set_data_full (G_OBJECT (widget),
 250                               "gtk-info-bar-response-data",
 251                               ad,
 252                               response_data_free);
 253     }
 254
 255   return ad;
 256 }
 257
 258 static GtkWidget *
 259 find_button (EvInfoBar *info_bar,
 260              gint        response_id)
 261 {
 262   GList *children, *list;
 263   GtkWidget *child = NULL;
 264
 265   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 266
 267   for (list = children; list; list = list->next)
 268     {
 269       ResponseData *rd = get_response_data (list->data, FALSE);
 270
 271       if (rd && rd->response_id == response_id)
 272         {
 273           child = list->data;
 274           break;
 275         }
 276     }
 277
 278   g_list_free (children);
 279
 280   return child;
 281 }
 282
 283 static void
 284 gtk_info_bar_close (EvInfoBar *info_bar)
 285 {
 286   if (!find_button (info_bar, GTK_RESPONSE_CANCEL))
 287     return;
 288
 289   ev_info_bar_response (EV_INFO_BAR (info_bar),
 290                         GTK_RESPONSE_CANCEL);
 291 }
 292
 293 static gboolean
 294 gtk_info_bar_expose (GtkWidget      *widget,
 295                      GdkEventExpose *event)
 296 {
 297   EvInfoBarPrivate *priv = GTK_INFO_BAR_GET_PRIVATE (widget);
 298   const char* type_detail[] = {
 299     "infobar-info",
 300     "infobar-warning",
 301     "infobar-question",
 302     "infobar-error",
 303     "infobar"
 304   };
 305
 306   if (priv->message_type != GTK_MESSAGE_OTHER)
 307     {
 308       const char *detail;
 309
 310       detail = type_detail[priv->message_type];
 311
 312       gtk_paint_box (widget->style,
 313                      widget->window,
 314                      GTK_STATE_NORMAL,
 315                      GTK_SHADOW_OUT,
 316                      NULL,
 317                      widget,
 318                      detail,
 319                      widget->allocation.x,
 320                      widget->allocation.y,
 321                      widget->allocation.width,
 322                      widget->allocation.height);
 323     }
 324
 325   if (GTK_WIDGET_CLASS (ev_info_bar_parent_class)->expose_event)
 326     GTK_WIDGET_CLASS (ev_info_bar_parent_class)->expose_event (widget, event);
 327
 328   return FALSE;
 329 }
 330
 331 static void
 332 ev_info_bar_class_init (EvInfoBarClass *klass)
 333 {
 334   GtkWidgetClass *widget_class;
 335   GObjectClass *object_class;
 336   GtkBindingSet *binding_set;
 337
 338   widget_class = GTK_WIDGET_CLASS (klass);
 339   object_class = G_OBJECT_CLASS (klass);
 340
 341   object_class->get_property = gtk_info_bar_get_property;
 342   object_class->set_property = gtk_info_bar_set_property;
 343   object_class->finalize = gtk_info_bar_finalize;
 344
 345   widget_class->style_set = gtk_info_bar_style_set;
 346   widget_class->expose_event = gtk_info_bar_expose;
 347
 348   klass->close = gtk_info_bar_close;
 349
 350   /**
 351    * GtkInfoBar:message-type:
 352    *
 353    * The type of the message.
 354    *
 355    * The type is used to determine the colors to use in the info bar.
 356    * The following symbolic color names can by used to customize
 357    * these colors:
 358    * "info_fg_color", "info_bg_color",
 359    * "warning_fg_color", "warning_bg_color",
 360    * "question_fg_color", "question_bg_color",
 361    * "error_fg_color", "error_bg_color".
 362    * "other_fg_color", "other_bg_color".
 363    *
 364    * If the type is #GTK_MESSAGE_OTHER, no info bar is painted but the
 365    * colors are still set.
 366    *
 367    * Since: 2.18
 368    */
 369   g_object_class_install_property (object_class,
 370                                    PROP_MESSAGE_TYPE,
 371                                    g_param_spec_enum ("message-type",
 372                                                       "Message Type",
 373                                                       "The type of message",
 374                                                       GTK_TYPE_MESSAGE_TYPE,
 375                                                       GTK_MESSAGE_INFO,
 376                                                       G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 377   /**
 378    * GtkInfoBar::response:
 379    * @info_bar: the object on which the signal is emitted
 380    * @response_id: the response ID
 381    *
 382    * Emitted when an action widget is clicked or the application programmer
 383    * calls gtk_dialog_response(). The @response_id depends on which action
 384    * widget was clicked.
 385    *
 386    * Since: 2.18
 387    */
 388   signals[RESPONSE] = g_signal_new ("response",
 389                                     G_OBJECT_CLASS_TYPE (klass),
 390                                     G_SIGNAL_RUN_LAST,
 391                                     G_STRUCT_OFFSET (EvInfoBarClass, response),
 392                                     NULL, NULL,
 393                                     g_cclosure_marshal_VOID__INT,
 394                                     G_TYPE_NONE, 1,
 395                                     G_TYPE_INT);
 396
 397   /**
 398    * GtkInfoBar::close:
 399    *
 400    * The ::close signal is a
 401    * <link linkend="keybinding-signals">keybinding signal</link>
 402    * which gets emitted when the user uses a keybinding to dismiss
 403    * the info bar.
 404    *
 405    * The default binding for this signal is the Escape key.
 406    *
 407    * Since: 2.18
 408    */
 409   signals[CLOSE] =  g_signal_new ("close",
 410                                   G_OBJECT_CLASS_TYPE (klass),
 411                                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 412                                   G_STRUCT_OFFSET (EvInfoBarClass, close),
 413                                   NULL, NULL,
 414                                   g_cclosure_marshal_VOID__VOID,
 415                                   G_TYPE_NONE, 0);
 416
 417   /**
 418    * GtkInfoBar:content-area-border:
 419    *
 420    * The width of the border around the content
 421    * content area of the info bar.
 422    *
 423    * Since: 2.18
 424    */
 425   gtk_widget_class_install_style_property (widget_class,
 426                                            g_param_spec_int ("content-area-border",
 427                                                              "Content area border",
 428                                                              "Width of border around the content area",
 429                                                              0,
 430                                                              G_MAXINT,
 431                                                              8,
 432                                                              G_PARAM_READABLE));
 433
 434   /**
 435    * GtkInfoBar:content-area-spacing:
 436    *
 437    * The default spacing used between elements of the
 438    * content area of the info bar.
 439    *
 440    * Since: 2.18
 441    */
 442   gtk_widget_class_install_style_property (widget_class,
 443                                            g_param_spec_int ("content-area-spacing",
 444                                                              "Content area spacing",
 445                                                              "Spacing between elements of the area",
 446                                                              0,
 447                                                              G_MAXINT,
 448                                                              16,
 449                                                              G_PARAM_READABLE));
 450
 451   /**
 452    * GtkInfoBar:button-spacing:
 453    *
 454    * Spacing between buttons in the action area of the info bar.
 455    *
 456    * Since: 2.18
 457    */
 458   gtk_widget_class_install_style_property (widget_class,
 459                                            g_param_spec_int ("button-spacing",
 460                                                              "Button spacing",
 461                                                              "Spacing between buttons",
 462                                                              0,
 463                                                              G_MAXINT,
 464                                                              6,
 465                                                              G_PARAM_READABLE));
 466
 467   /**
 468    * GtkInfoBar:action-area-border:
 469    *
 470    * Width of the border around the action area of the info bar.
 471    *
 472    * Since: 2.18
 473    */
 474   gtk_widget_class_install_style_property (widget_class,
 475                                            g_param_spec_int ("action-area-border",
 476                                                              "Action area border",
 477                                                              "Width of border around the action area",
 478                                                              0,
 479                                                              G_MAXINT,
 480                                                              5,
 481                                                              G_PARAM_READABLE));
 482
 483   binding_set = gtk_binding_set_by_class (klass);
 484
 485   gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "close", 0);
 486
 487   g_type_class_add_private (object_class, sizeof (EvInfoBarPrivate));
 488 }
 489
 490 static void
 491 gtk_info_bar_update_colors (EvInfoBar *info_bar)
 492 {
 493   GtkWidget *widget = (GtkWidget*)info_bar;
 494   EvInfoBarPrivate *priv;
 495   GdkColor info_default_border_color     = { 0, 0xb800, 0xad00, 0x9d00 };
 496   GdkColor info_default_fill_color       = { 0, 0xff00, 0xff00, 0xbf00 };
 497   GdkColor warning_default_border_color  = { 0, 0xb000, 0x7a00, 0x2b00 };
 498   GdkColor warning_default_fill_color    = { 0, 0xfc00, 0xaf00, 0x3e00 };
 499   GdkColor question_default_border_color = { 0, 0x6200, 0x7b00, 0xd960 };
 500   GdkColor question_default_fill_color   = { 0, 0x8c00, 0xb000, 0xd700 };
 501   GdkColor error_default_border_color    = { 0, 0xa800, 0x2700, 0x2700 };
 502   GdkColor error_default_fill_color      = { 0, 0xf000, 0x3800, 0x3800 };
 503   GdkColor other_default_border_color    = { 0, 0xb800, 0xad00, 0x9d00 };
 504   GdkColor other_default_fill_color      = { 0, 0xff00, 0xff00, 0xbf00 };
 505   GdkColor *fg, *bg;
 506   GdkColor sym_fg, sym_bg;
 507   GtkStyle *style;
 508   const char* fg_color_name[] = {
 509     "info_fg_color",
 510     "warning_fg_color",
 511     "question_fg_color",
 512     "error_fg_color",
 513     "other_fg_color"
 514   };
 515   const char* bg_color_name[] = {
 516     "info_bg_color",
 517     "warning_bg_color",
 518     "question_bg_color",
 519     "error_bg_color",
 520     "other_bg_color"
 521   };
 522
 523   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 524   style = gtk_widget_get_style (widget);
 525
 526   if (gtk_style_lookup_color (style, fg_color_name[priv->message_type], &sym_fg) &&
 527       gtk_style_lookup_color (style, bg_color_name[priv->message_type], &sym_bg))
 528     {
 529       fg = &sym_fg;
 530       bg = &sym_bg;
 531     }
 532   else
 533     {
 534       switch (priv->message_type)
 535         {
 536         case GTK_MESSAGE_INFO:
 537           fg = &info_default_border_color;
 538           bg = &info_default_fill_color;
 539           break;
 540
 541         case GTK_MESSAGE_WARNING:
 542           fg = &warning_default_border_color;
 543           bg = &warning_default_fill_color;
 544           break;
 545
 546         case GTK_MESSAGE_QUESTION:
 547           fg = &question_default_border_color;
 548           bg = &question_default_fill_color;
 549           break;
 550
 551         case GTK_MESSAGE_ERROR:
 552           fg = &error_default_border_color;
 553           bg = &error_default_fill_color;
 554           break;
 555
 556         case GTK_MESSAGE_OTHER:
 557           fg = &other_default_border_color;
 558           bg = &other_default_fill_color;
 559           break;
 560         }
 561     }
 562
 563   if (!gdk_color_equal (bg, &widget->style->bg[GTK_STATE_NORMAL]))
 564     gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, bg);
 565   if (!gdk_color_equal (fg, &widget->style->fg[GTK_STATE_NORMAL]))
 566     gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, fg);
 567 }
 568
 569 static void
 570 gtk_info_bar_style_set (GtkWidget *widget,
 571                         GtkStyle  *prev_style)
 572 {
 573   EvInfoBar *info_bar = EV_INFO_BAR (widget);
 574   gint button_spacing;
 575   gint action_area_border;
 576   gint content_area_spacing;
 577   gint content_area_border;
 578
 579   gtk_widget_style_get (widget,
 580                         "button-spacing", &button_spacing,
 581                         "action-area-border", &action_area_border,
 582                         "content-area-spacing", &content_area_spacing,
 583                         "content-area-border", &content_area_border,
 584                         NULL);
 585
 586   gtk_box_set_spacing (GTK_BOX (info_bar->priv->action_area), button_spacing);
 587   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->action_area),
 588                                   action_area_border);
 589   gtk_box_set_spacing (GTK_BOX (info_bar->priv->content_area), content_area_spacing);
 590   gtk_container_set_border_width (GTK_CONTAINER (info_bar->priv->content_area),
 591                                   content_area_border);
 592
 593   gtk_info_bar_update_colors (info_bar);
 594 }
 595
 596 static void
 597 ev_info_bar_init (EvInfoBar *info_bar)
 598 {
 599   GtkWidget *content_area;
 600   GtkWidget *action_area;
 601
 602   gtk_widget_push_composite_child ();
 603
 604   info_bar->priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
 605
 606   content_area = gtk_hbox_new (FALSE, 0);
 607   gtk_widget_show (content_area);
 608   gtk_box_pack_start (GTK_BOX (info_bar), content_area, TRUE, TRUE, 0);
 609
 610   action_area = gtk_vbutton_box_new ();
 611   gtk_widget_show (action_area);
 612   gtk_button_box_set_layout (GTK_BUTTON_BOX (action_area), GTK_BUTTONBOX_END);
 613   gtk_box_pack_start (GTK_BOX (info_bar), action_area, FALSE, TRUE, 0);
 614
 615   gtk_widget_set_app_paintable (GTK_WIDGET (info_bar), TRUE);
 616   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (info_bar), TRUE);
 617
 618   info_bar->priv->content_area = content_area;
 619   info_bar->priv->action_area = action_area;
 620
 621   gtk_widget_pop_composite_child ();
 622 }
 623
 624 static GtkBuildableIface *parent_buildable_iface;
 625
 626 static void
 627 gtk_info_bar_buildable_interface_init (GtkBuildableIface *iface)
 628 {
 629   parent_buildable_iface = g_type_interface_peek_parent (iface);
 630   iface->get_internal_child = gtk_info_bar_buildable_get_internal_child;
 631   iface->custom_tag_start = gtk_info_bar_buildable_custom_tag_start;
 632   iface->custom_finished = gtk_info_bar_buildable_custom_finished;
 633 }
 634
 635 static GObject *
 636 gtk_info_bar_buildable_get_internal_child (GtkBuildable *buildable,
 637                                            GtkBuilder   *builder,
 638                                            const gchar  *childname)
 639 {
 640   if (strcmp (childname, "content_area") == 0)
 641     return G_OBJECT (EV_INFO_BAR (buildable)->priv->content_area);
 642   else if (strcmp (childname, "action_area") == 0)
 643     return G_OBJECT (EV_INFO_BAR (buildable)->priv->action_area);
 644
 645   return parent_buildable_iface->get_internal_child (buildable,
 646                                                      builder,
 647                                                      childname);
 648 }
 649
 650 static gint
 651 get_response_for_widget (EvInfoBar *info_bar,
 652                          GtkWidget  *widget)
 653 {
 654   ResponseData *rd;
 655
 656   rd = get_response_data (widget, FALSE);
 657   if (!rd)
 658     return GTK_RESPONSE_NONE;
 659   else
 660     return rd->response_id;
 661 }
 662
 663 static void
 664 action_widget_activated (GtkWidget  *widget,
 665                          EvInfoBar *info_bar)
 666 {
 667   gint response_id;
 668
 669   response_id = get_response_for_widget (info_bar, widget);
 670   ev_info_bar_response (info_bar, response_id);
 671 }
 672
 673 /**
 674  * gtk_info_bar_add_action_widget:
 675  * @info_bar: a #GtkInfoBar
 676  * @child: an activatable widget
 677  * @response_id: response ID for @child
 678  *
 679  * Add an activatable widget to the action area of a #GtkInfoBar,
 680  * connecting a signal handler that will emit the #GtkInfoBar::response
 681  * signal on the message area when the widget is activated. The widget
 682  * is appended to the end of the message areas action area.
 683  *
 684  * Since: 2.18
 685  */
 686 void
 687 ev_info_bar_add_action_widget (EvInfoBar *info_bar,
 688                                GtkWidget  *child,
 689                                gint        response_id)
 690 {
 691   ResponseData *ad;
 692   guint signal_id;
 693
 694   g_return_if_fail (EV_IS_INFO_BAR (info_bar));
 695   g_return_if_fail (GTK_IS_WIDGET (child));
 696
 697   ad = get_response_data (child, TRUE);
 698
 699   ad->response_id = response_id;
 700
 701   if (GTK_IS_BUTTON (child))
 702     signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
 703   else
 704     signal_id = GTK_WIDGET_GET_CLASS (child)->activate_signal;
 705
 706   if (signal_id)
 707     {
 708       GClosure *closure;
 709
 710       closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
 711                                        G_OBJECT (info_bar));
 712       g_signal_connect_closure_by_id (child, signal_id, 0, closure, FALSE);
 713     }
 714   else
 715     g_warning ("Only 'activatable' widgets can be packed into the action area of a GtkInfoBar");
 716
 717   gtk_box_pack_end (GTK_BOX (info_bar->priv->action_area),
 718                     child, FALSE, FALSE, 0);
 719   if (response_id == GTK_RESPONSE_HELP)
 720     gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
 721                                         child, TRUE);
 722 }
 723
 724 /**
 725  * gtk_info_bar_get_action_area:
 726  * @info_bar: a #GtkInfoBar
 727  *
 728  * Returns the action area of @info_bar.
 729  *
 730  * Returns: the action area.
 731  *
 732  * Since: 2.18
 733  */
 734 GtkWidget*
 735 ev_info_bar_get_action_area (EvInfoBar *info_bar)
 736 {
 737   g_return_val_if_fail (EV_IS_INFO_BAR (info_bar), NULL);
 738
 739   return info_bar->priv->action_area;
 740 }
 741
 742 /**
 743  * gtk_info_bar_get_content_area:
 744  * @info_bar: a #GtkInfoBar
 745  *
 746  * Returns the content area of @info_bar.
 747  *
 748  * Returns: the content area.
 749  *
 750  * Since: 2.18
 751  */
 752 GtkWidget*
 753 ev_info_bar_get_content_area (EvInfoBar *info_bar)
 754 {
 755   g_return_val_if_fail (EV_IS_INFO_BAR (info_bar), NULL);
 756
 757   return info_bar->priv->content_area;
 758 }
 759
 760 /**
 761  * gtk_info_bar_add_button:
 762  * @info_bar: a #GtkInfoBar
 763  * @button_text: text of button, or stock ID
 764  * @response_id: response ID for the button
 765  *
 766  * Adds a button with the given text (or a stock button, if button_text
 767  * is a stock ID) and sets things up so that clicking the button will emit
 768  * the "response" signal with the given response_id. The button is appended
 769  * to the end of the info bars's action area. The button widget is
 770  * returned, but usually you don't need it.
 771  *
 772  * Returns: the button widget that was added
 773  *
 774  * Since: 2.18
 775  */
 776 GtkWidget*
 777 ev_info_bar_add_button (EvInfoBar  *info_bar,
 778                          const gchar *button_text,
 779                          gint         response_id)
 780 {
 781   GtkWidget *button;
 782
 783   g_return_val_if_fail (EV_IS_INFO_BAR (info_bar), NULL);
 784   g_return_val_if_fail (button_text != NULL, NULL);
 785
 786   button = gtk_button_new_from_stock (button_text);
 787
 788   GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
 789
 790   gtk_widget_show (button);
 791
 792   ev_info_bar_add_action_widget (info_bar, button, response_id);
 793
 794   return button;
 795 }
 796
 797 static void
 798 add_buttons_valist (EvInfoBar  *info_bar,
 799                     const gchar *first_button_text,
 800                     va_list      args)
 801 {
 802   const gchar* text;
 803   gint response_id;
 804
 805   g_return_if_fail (EV_IS_INFO_BAR (info_bar));
 806
 807   if (first_button_text == NULL)
 808     return;
 809
 810   text = first_button_text;
 811   response_id = va_arg (args, gint);
 812
 813   while (text != NULL)
 814     {
 815       ev_info_bar_add_button (info_bar, text, response_id);
 816
 817       text = va_arg (args, gchar*);
 818       if (text == NULL)
 819         break;
 820
 821       response_id = va_arg (args, int);
 822     }
 823 }
 824
 825 /**
 826  * gtk_info_bar_add_buttons:
 827  * @info_bar: a #GtkInfoBar
 828  * @first_button_text: button text or stock ID
 829  * @...: response ID for first button, then more text-response_id pairs,
 830  *     ending with %NULL
 831  *
 832  * Adds more buttons, same as calling gtk_info_bar_add_button()
 833  * repeatedly. The variable argument list should be %NULL-terminated
 834  * as with gtk_info_bar_new_with_buttons(). Each button must have both
 835  * text and response ID.
 836  *
 837  * Since: 2.18
 838  */
 839 void
 840 ev_info_bar_add_buttons (EvInfoBar  *info_bar,
 841                           const gchar *first_button_text,
 842                           ...)
 843 {
 844   va_list args;
 845
 846   va_start (args, first_button_text);
 847   add_buttons_valist (info_bar, first_button_text, args);
 848   va_end (args);
 849 }
 850
 851 /**
 852  * gtk_info_bar_new:
 853  *
 854  * Creates a new #GtkInfoBar object.
 855  *
 856  * Returns: a new #GtkInfoBar object
 857  *
 858  * Since: 2.18
 859  */
 860 GtkWidget *
 861 ev_info_bar_new (void)
 862 {
 863    return g_object_new (EV_TYPE_INFO_BAR, NULL);
 864 }
 865
 866 /**
 867  * gtk_info_bar_new_with_buttons:
 868  * @first_button_text: stock ID or text to go in first button, or %NULL
 869  * @...: response ID for first button, then additional buttons, ending
 870  *    with %NULL
 871  *
 872  * Creates a new #GtkInfoBar with buttons. Button text/response ID
 873  * pairs should be listed, with a %NULL pointer ending the list.
 874  * Button text can be either a stock ID such as %GTK_STOCK_OK, or
 875  * some arbitrary text. A response ID can be any positive number,
 876  * or one of the values in the #GtkResponseType enumeration. If the
 877  * user clicks one of these dialog buttons, GtkInfoBar will emit
 878  * the "response" signal with the corresponding response ID.
 879  *
 880  * Returns: a new #GtkInfoBar
 881  */
 882 GtkWidget*
 883 ev_info_bar_new_with_buttons (const gchar *first_button_text,
 884                                ...)
 885 {
 886   EvInfoBar *info_bar;
 887   va_list args;
 888
 889   info_bar = EV_INFO_BAR (ev_info_bar_new ());
 890
 891   va_start (args, first_button_text);
 892   add_buttons_valist (info_bar, first_button_text, args);
 893   va_end (args);
 894
 895   return GTK_WIDGET (info_bar);
 896 }
 897
 898 /**
 899  * gtk_info_bar_set_response_sensitive:
 900  * @info_bar: a #GtkInfoBar
 901  * @response_id: a response ID
 902  * @setting: TRUE for sensitive
 903  *
 904  * Calls gtk_widget_set_sensitive (widget, setting) for each
 905  * widget in the info bars's action area with the given response_id.
 906  * A convenient way to sensitize/desensitize dialog buttons.
 907  *
 908  * Since: 2.18
 909  */
 910 void
 911 ev_info_bar_set_response_sensitive (EvInfoBar *info_bar,
 912                                      gint        response_id,
 913                                      gboolean    setting)
 914 {
 915   GList *children, *list;
 916
 917   g_return_if_fail (EV_IS_INFO_BAR (info_bar));
 918
 919   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 920
 921   for (list = children; list; list = list->next)
 922     {
 923       GtkWidget *widget = list->data;
 924       ResponseData *rd = get_response_data (widget, FALSE);
 925
 926       if (rd && rd->response_id == response_id)
 927         gtk_widget_set_sensitive (widget, setting);
 928     }
 929
 930   g_list_free (children);
 931 }
 932
 933 /**
 934  * gtk_info_bar_set_default_response:
 935  * @info_bar: a #GtkInfoBar
 936  * @response_id: a response ID
 937  *
 938  * Sets the last widget in the info bar's action area with
 939  * the given response_id as the default widget for the dialog.
 940  * Pressing "Enter" normally activates the default widget.
 941  *
 942  * Since: 2.18
 943  */
 944 void
 945 ev_info_bar_set_default_response (EvInfoBar *info_bar,
 946                                    gint        response_id)
 947 {
 948   GList *children, *list;
 949
 950   g_return_if_fail (EV_IS_INFO_BAR (info_bar));
 951
 952   children = gtk_container_get_children (GTK_CONTAINER (info_bar->priv->action_area));
 953
 954   for (list = children; list; list = list->next)
 955     {
 956       GtkWidget *widget = list->data;
 957       ResponseData *rd = get_response_data (widget, FALSE);
 958
 959       if (rd && rd->response_id == response_id)
 960         gtk_widget_grab_default (widget);
 961     }
 962
 963   g_list_free (children);
 964 }
 965
 966 /**
 967  * gtk_info_bar_response:
 968  * @info_bar: a #GtkInfoBar
 969  * @response_id: a response ID
 970  *
 971  * Emits the 'response' signal with the given @response_id.
 972  *
 973  * Since: 2.18
 974  */
 975 void
 976 ev_info_bar_response (EvInfoBar *info_bar,
 977                       gint        response_id)
 978 {
 979   g_return_if_fail (EV_IS_INFO_BAR (info_bar));
 980
 981   g_signal_emit (info_bar, signals[RESPONSE], 0, response_id);
 982 }
 983
 984 typedef struct
 985 {
 986   gchar *widget_name;
 987   gchar *response_id;
 988 } ActionWidgetInfo;
 989
 990 typedef struct
 991 {
 992   EvInfoBar *info_bar;
 993   GtkBuilder *builder;
 994   GSList *items;
 995   gchar *response;
 996 } ActionWidgetsSubParserData;
 997
 998 static void
 999 attributes_start_element (GMarkupParseContext  *context,
1000                           const gchar          *element_name,
1001                           const gchar         **names,
1002                           const gchar         **values,
1003                           gpointer              user_data,
1004                           GError              **error)
1005 {
1006   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1007   guint i;
1008
1009   if (strcmp (element_name, "action-widget") == 0)
1010     {
1011       for (i = 0; names[i]; i++)
1012         if (strcmp (names[i], "response") == 0)
1013           parser_data->response = g_strdup (values[i]);
1014     }
1015   else if (strcmp (element_name, "action-widgets") == 0)
1016     return;
1017   else
1018     g_warning ("Unsupported tag for GtkInfoBar: %s\n", element_name);
1019 }
1020
1021 static void
1022 attributes_text_element (GMarkupParseContext  *context,
1023                          const gchar          *text,
1024                          gsize                 text_len,
1025                          gpointer              user_data,
1026                          GError              **error)
1027 {
1028   ActionWidgetsSubParserData *parser_data = (ActionWidgetsSubParserData*)user_data;
1029   ActionWidgetInfo *item;
1030
1031   if (!parser_data->response)
1032     return;
1033
1034   item = g_new (ActionWidgetInfo, 1);
1035   item->widget_name = g_strndup (text, text_len);
1036   item->response_id = parser_data->response;
1037   parser_data->items = g_slist_prepend (parser_data->items, item);
1038   parser_data->response = NULL;
1039 }
1040
1041 static const GMarkupParser attributes_parser =
1042 {
1043   attributes_start_element,
1044   NULL,
1045   attributes_text_element,
1046 };
1047
1048 static gboolean
1049 gtk_info_bar_buildable_custom_tag_start (GtkBuildable  *buildable,
1050                                          GtkBuilder    *builder,
1051                                          GObject       *child,
1052                                          const gchar   *tagname,
1053                                          GMarkupParser *parser,
1054                                          gpointer      *data)
1055 {
1056   ActionWidgetsSubParserData *parser_data;
1057
1058   if (child)
1059     return FALSE;
1060
1061   if (strcmp (tagname, "action-widgets") == 0)
1062     {
1063       parser_data = g_slice_new0 (ActionWidgetsSubParserData);
1064       parser_data->info_bar = EV_INFO_BAR (buildable);
1065       parser_data->items = NULL;
1066
1067       *parser = attributes_parser;
1068       *data = parser_data;
1069       return TRUE;
1070     }
1071
1072   return parent_buildable_iface->custom_tag_start (buildable, builder, child,
1073                                                    tagname, parser, data);
1074 }
1075
1076 static void
1077 gtk_info_bar_buildable_custom_finished (GtkBuildable *buildable,
1078                                         GtkBuilder   *builder,
1079                                         GObject      *child,
1080                                         const gchar  *tagname,
1081                                         gpointer      user_data)
1082 {
1083   GSList *l;
1084   ActionWidgetsSubParserData *parser_data;
1085   GObject *object;
1086   EvInfoBar *info_bar;
1087   ResponseData *ad;
1088   guint signal_id;
1089
1090   if (strcmp (tagname, "action-widgets"))
1091     {
1092       parent_buildable_iface->custom_finished (buildable, builder, child,
1093                                                tagname, user_data);
1094       return;
1095     }
1096
1097   info_bar = EV_INFO_BAR (buildable);
1098   parser_data = (ActionWidgetsSubParserData*)user_data;
1099   parser_data->items = g_slist_reverse (parser_data->items);
1100
1101   for (l = parser_data->items; l; l = l->next)
1102     {
1103       ActionWidgetInfo *item = l->data;
1104
1105       object = gtk_builder_get_object (builder, item->widget_name);
1106       if (!object)
1107         {
1108           g_warning ("Unknown object %s specified in action-widgets of %s",
1109                      item->widget_name,
1110                      gtk_buildable_get_name (GTK_BUILDABLE (buildable)));
1111           continue;
1112         }
1113
1114       ad = get_response_data (GTK_WIDGET (object), TRUE);
1115       ad->response_id = atoi (item->response_id);
1116
1117       if (GTK_IS_BUTTON (object))
1118         signal_id = g_signal_lookup ("clicked", GTK_TYPE_BUTTON);
1119       else
1120         signal_id = GTK_WIDGET_GET_CLASS (object)->activate_signal;
1121
1122       if (signal_id)
1123         {
1124           GClosure *closure;
1125
1126           closure = g_cclosure_new_object (G_CALLBACK (action_widget_activated),
1127                                            G_OBJECT (info_bar));
1128           g_signal_connect_closure_by_id (object,
1129                                           signal_id,
1130                                           0,
1131                                           closure,
1132                                           FALSE);
1133         }
1134
1135       if (ad->response_id == GTK_RESPONSE_HELP)
1136         gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (info_bar->priv->action_area),
1137                                             GTK_WIDGET (object), TRUE);
1138
1139       g_free (item->widget_name);
1140       g_free (item->response_id);
1141       g_free (item);
1142     }
1143   g_slist_free (parser_data->items);
1144   g_slice_free (ActionWidgetsSubParserData, parser_data);
1145 }
1146
1147 /**
1148  * gtk_info_bar_set_message_type:
1149  * @info_bar: a #GtkInfoBar
1150  * @message_type: a #GtkMessageType
1151  *
1152  * Sets the message type of the message area.
1153  * GTK+ uses this type to determine what color to use
1154  * when drawing the message area.
1155  *
1156  * Since: 2.18
1157  */
1158 void
1159 ev_info_bar_set_message_type (EvInfoBar     *info_bar,
1160                                GtkMessageType  message_type)
1161 {
1162   EvInfoBarPrivate *priv;
1163   AtkObject *atk_obj;
1164
1165   g_return_if_fail (EV_IS_INFO_BAR (info_bar));
1166
1167   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
1168
1169   if (priv->message_type != message_type)
1170     {
1171       priv->message_type = message_type;
1172
1173       gtk_info_bar_update_colors (info_bar);
1174       gtk_widget_queue_draw (GTK_WIDGET (info_bar));
1175
1176       atk_obj = gtk_widget_get_accessible (GTK_WIDGET (info_bar));
1177       if (GTK_IS_ACCESSIBLE (atk_obj))
1178         {
1179           GtkStockItem item;
1180           const char *stock_id = NULL;
1181
1182           atk_object_set_role (atk_obj, ATK_ROLE_ALERT);
1183
1184           switch (message_type)
1185             {
1186             case GTK_MESSAGE_INFO:
1187               stock_id = GTK_STOCK_DIALOG_INFO;
1188               break;
1189
1190             case GTK_MESSAGE_QUESTION:
1191               stock_id = GTK_STOCK_DIALOG_QUESTION;
1192               break;
1193
1194             case GTK_MESSAGE_WARNING:
1195               stock_id = GTK_STOCK_DIALOG_WARNING;
1196               break;
1197
1198             case GTK_MESSAGE_ERROR:
1199               stock_id = GTK_STOCK_DIALOG_ERROR;
1200               break;
1201
1202             case GTK_MESSAGE_OTHER:
1203               break;
1204
1205             default:
1206               g_warning ("Unknown GtkMessageType %u", message_type);
1207               break;
1208             }
1209
1210           if (stock_id)
1211             {
1212               gtk_stock_lookup (stock_id, &item);
1213               atk_object_set_name (atk_obj, item.label);
1214             }
1215         }
1216
1217       g_object_notify (G_OBJECT (info_bar), "message-type");
1218     }
1219 }
1220
1221 /**
1222  * gtk_info_bar_get_message_type:
1223  * @info_bar: a #GtkInfoBar
1224  *
1225  * Returns the message type of the message area.
1226  *
1227  * Returns: the message type of the message area.
1228  *
1229  * Since: 2.18
1230  */
1231 GtkMessageType
1232 ev_info_bar_get_message_type (EvInfoBar *info_bar)
1233 {
1234   EvInfoBarPrivate *priv;
1235
1236   g_return_val_if_fail (EV_IS_INFO_BAR (info_bar), GTK_MESSAGE_OTHER);
1237
1238   priv = GTK_INFO_BAR_GET_PRIVATE (info_bar);
1239
1240   return priv->message_type;
1241 }
1242
1243
1244 #define __GTK_INFO_BAR_C__
1245