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