shell/ev-sidebar-links.c

   1 /* this file is part of evince, a gnome document viewer
   2  *
   3  *  Copyright (C) 2004 Red Hat, Inc.
   4  *
   5  *  Author:
   6  *    Jonathan Blandford <jrb@alum.mit.edu>
   7  *
   8  * Evince is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * Evince is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include <string.h>
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30
  31 #include "ev-sidebar-page.h"
  32 #include "ev-sidebar-links.h"
  33 #include "ev-job-queue.h"
  34 #include "ev-document-links.h"
  35 #include "ev-window.h"
  36 #include "ev-gui.h"
  37
  38 struct _EvSidebarLinksPrivate {
  39         GtkWidget *tree_view;
  40
  41         /* Keep these ids around for blocking */
  42         guint selection_id;
  43         guint page_changed_id;
  44         guint row_activated_id;
  45
  46         EvJob *job;
  47         GtkTreeModel *model;
  48         EvDocument *document;
  49         EvPageCache *page_cache;
  50 };
  51
  52 enum {
  53         PROP_0,
  54         PROP_MODEL,
  55 };
  56
  57
  58 static void links_page_num_func                         (GtkTreeViewColumn *tree_column,
  59                                                          GtkCellRenderer   *cell,
  60                                                          GtkTreeModel      *tree_model,
  61                                                          GtkTreeIter       *iter,
  62                                                          EvSidebarLinks    *sidebar_links);
  63 static void update_page_callback                        (EvPageCache       *page_cache,
  64                                                          gint               current_page,
  65                                                          EvSidebarLinks    *sidebar_links);
  66 static void row_activated_callback                      (GtkTreeView *treeview,
  67                                                          GtkTreePath *arg1,
  68                                                          GtkTreeViewColumn *arg2,
  69                                                          gpointer user_data);
  70 static void ev_sidebar_links_page_iface_init            (EvSidebarPageIface *iface);
  71 static void ev_sidebar_links_clear_document             (EvSidebarLinks *sidebar_links);
  72 static void ev_sidebar_links_set_document               (EvSidebarPage  *sidebar_page,
  73                                                          EvDocument     *document);
  74 static gboolean ev_sidebar_links_support_document       (EvSidebarPage  *sidebar_page,
  75                                                          EvDocument     *document);
  76 static const gchar* ev_sidebar_links_get_label          (EvSidebarPage *sidebar_page);
  77
  78
  79 G_DEFINE_TYPE_EXTENDED (EvSidebarLinks,
  80                         ev_sidebar_links,
  81                         GTK_TYPE_VBOX,
  82                         0,
  83                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  84                                                ev_sidebar_links_page_iface_init))
  85
  86
  87 #define EV_SIDEBAR_LINKS_GET_PRIVATE(object) \
  88         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_LINKS, EvSidebarLinksPrivate))
  89
  90
  91 static void
  92 ev_sidebar_links_destroy (GtkObject *object)
  93 {
  94         EvSidebarLinks *ev_sidebar_links = (EvSidebarLinks *) object;
  95
  96         ev_sidebar_links_clear_document (ev_sidebar_links);
  97 }
  98
  99 static void
 100 ev_sidebar_links_set_property (GObject      *object,
 101                                guint         prop_id,
 102                                const GValue *value,
 103                                GParamSpec   *pspec)
 104 {
 105         EvSidebarLinks *ev_sidebar_links;
 106         GtkTreeModel *model;
 107
 108         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 109
 110         switch (prop_id)
 111         {
 112         case PROP_MODEL:
 113                 model = ev_sidebar_links->priv->model;
 114                 ev_sidebar_links->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 115                 if (model)
 116                         g_object_unref (model);
 117                 break;
 118         default:
 119                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 120                 break;
 121         }
 122 }
 123
 124 static void
 125 ev_sidebar_links_get_property (GObject    *object,
 126                                guint       prop_id,
 127                                GValue     *value,
 128                                GParamSpec *pspec)
 129 {
 130         EvSidebarLinks *ev_sidebar_links;
 131
 132         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 133
 134         switch (prop_id)
 135         {
 136         case PROP_MODEL:
 137                 g_value_set_object (value, ev_sidebar_links->priv->model);
 138                 break;
 139         default:
 140                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 141                 break;
 142         }
 143 }
 144
 145
 146 static void
 147 ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class)
 148 {
 149         GObjectClass *g_object_class;
 150         GtkObjectClass *gtk_object_class;
 151
 152         g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class);
 153         gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_links_class);
 154
 155         g_object_class->set_property = ev_sidebar_links_set_property;
 156         g_object_class->get_property = ev_sidebar_links_get_property;
 157
 158         gtk_object_class->destroy = ev_sidebar_links_destroy;
 159
 160         g_object_class_install_property (g_object_class,
 161                                          PROP_MODEL,
 162                                          g_param_spec_object ("model",
 163                                                               "Model",
 164                                                               "Current Model",
 165                                                               GTK_TYPE_TREE_MODEL,
 166                                                               G_PARAM_READWRITE));
 167
 168         g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate));
 169 }
 170
 171 static void
 172 selection_changed_callback (GtkTreeSelection   *selection,
 173                             EvSidebarLinks     *ev_sidebar_links)
 174 {
 175         EvDocument *document;
 176         GtkTreeModel *model;
 177         GtkTreeIter iter;
 178
 179         g_return_if_fail (EV_IS_SIDEBAR_LINKS (ev_sidebar_links));
 180
 181         document = EV_DOCUMENT (ev_sidebar_links->priv->document);
 182         g_return_if_fail (ev_sidebar_links->priv->document != NULL);
 183
 184         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 185                 EvLink *link;
 186
 187                 gtk_tree_model_get (model, &iter,
 188                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 189                                     -1);
 190
 191                 if (link == NULL)
 192                         return;
 193
 194                 g_signal_handler_block (ev_sidebar_links->priv->page_cache,
 195                                         ev_sidebar_links->priv->page_changed_id);
 196                 /* FIXME: we should handle this better.  This breaks w/ URLs */
 197                 ev_page_cache_set_link (ev_sidebar_links->priv->page_cache, link);
 198                 g_signal_handler_unblock (ev_sidebar_links->priv->page_cache,
 199                                           ev_sidebar_links->priv->page_changed_id);
 200         }
 201 }
 202
 203 static GtkTreeModel *
 204 create_loading_model (void)
 205 {
 206         GtkTreeModel *retval;
 207         GtkTreeIter iter;
 208         gchar *markup;
 209
 210         /* Creates a fake model to indicate that we're loading */
 211         retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 212                                                      G_TYPE_STRING,
 213                                                      G_TYPE_OBJECT);
 214
 215         gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
 216         markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading..."));
 217         gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
 218                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup,
 219                             EV_DOCUMENT_LINKS_COLUMN_LINK, NULL,
 220                             -1);
 221         g_free (markup);
 222
 223         return retval;
 224 }
 225
 226 static void
 227 print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar)
 228 {
 229         GtkWidget *window;
 230         GtkTreeSelection *selection;
 231         GtkTreeModel *model;
 232         GtkTreeIter iter;
 233
 234         selection = gtk_tree_view_get_selection
 235                 (GTK_TREE_VIEW (sidebar->priv->tree_view));
 236
 237         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 238                 EvLink *link;
 239                 int first_page, last_page;
 240
 241                 gtk_tree_model_get (model, &iter,
 242                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 243                                     -1);
 244                 first_page = ev_link_get_page (link) + 1;
 245
 246                 if (gtk_tree_model_iter_next (model, &iter)) {
 247                         gtk_tree_model_get (model, &iter,
 248                                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 249                                             -1);
 250                         last_page = ev_link_get_page (link);
 251                 } else {
 252                         last_page = -1;
 253                 }
 254
 255                 window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar));
 256                 if (EV_IS_WINDOW (window)) {
 257                         ev_window_print_range (EV_WINDOW (window),
 258                                                first_page, last_page);
 259                 }
 260         }
 261 }
 262
 263 static GtkMenu *
 264 build_popup_menu (EvSidebarLinks *sidebar)
 265 {
 266         GtkWidget *menu;
 267         GtkWidget *item;
 268
 269         menu = gtk_menu_new ();
 270         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 271         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 272         gtk_widget_show (item);
 273         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 274         g_signal_connect (item, "activate",
 275                           G_CALLBACK (print_section_cb), sidebar);
 276
 277         return GTK_MENU (menu);
 278 }
 279
 280 static void
 281 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 282 {
 283         GtkMenu *menu = build_popup_menu (sidebar);
 284
 285         gtk_menu_popup (menu, NULL, NULL,
 286                         ev_gui_menu_position_tree_selection,
 287                         sidebar->priv->tree_view, 0,
 288                         gtk_get_current_event_time ());
 289         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 290 }
 291
 292 static gboolean
 293 button_press_cb (GtkWidget *treeview,
 294                  GdkEventButton *event,
 295                  EvSidebarLinks *sidebar)
 296 {
 297         GtkTreePath *path = NULL;
 298
 299         if (event->button == 3) {
 300                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 301                                                    event->x,
 302                                                    event->y,
 303                                                    &path,
 304                                                    NULL, NULL, NULL)) {
 305                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 306                                                   path, NULL, FALSE);
 307                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 308                                         NULL, NULL, NULL, event->button,
 309                                         gtk_get_current_event_time ());
 310                         gtk_tree_path_free (path);
 311
 312                         return TRUE;
 313                 }
 314         }
 315
 316         return FALSE;
 317 }
 318
 319
 320 static void
 321 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 322 {
 323         EvSidebarLinksPrivate *priv;
 324         GtkWidget *swindow;
 325         GtkTreeViewColumn *column;
 326         GtkCellRenderer *renderer;
 327         GtkTreeSelection *selection;
 328         GtkTreeModel *loading_model;
 329
 330         priv = ev_sidebar_links->priv;
 331
 332         swindow = gtk_scrolled_window_new (NULL, NULL);
 333
 334         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 335                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 336         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 337                                              GTK_SHADOW_IN);
 338
 339         /* Create tree view */
 340         loading_model = create_loading_model ();
 341         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 342         g_object_unref (loading_model);
 343
 344         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 345         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 346         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 347         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 348
 349         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 350         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 351
 352         column = gtk_tree_view_column_new ();
 353         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 354         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 355
 356         renderer = (GtkCellRenderer*)
 357                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 358                               "ellipsize", PANGO_ELLIPSIZE_END,
 359                               NULL);
 360         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 361         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 362                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 363                                              NULL);
 364
 365
 366         renderer = gtk_cell_renderer_text_new ();
 367         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 368         gtk_tree_view_column_set_cell_data_func (GTK_TREE_VIEW_COLUMN (column), renderer,
 369                                                  (GtkTreeCellDataFunc) links_page_num_func,
 370                                                  ev_sidebar_links, NULL);
 371
 372         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 373                           "button_press_event",
 374                           G_CALLBACK (button_press_cb),
 375                           ev_sidebar_links);
 376         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 377                           "popup_menu",
 378                           G_CALLBACK (popup_menu_cb),
 379                           ev_sidebar_links);
 380 }
 381
 382 static void
 383 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 384 {
 385         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 386
 387         ev_sidebar_links_construct (ev_sidebar_links);
 388 }
 389
 390 static void
 391 links_page_num_func (GtkTreeViewColumn *tree_column,
 392                      GtkCellRenderer   *cell,
 393                      GtkTreeModel      *tree_model,
 394                      GtkTreeIter       *iter,
 395                      EvSidebarLinks    *sidebar_links)
 396 {
 397         EvLink *link;
 398
 399         gtk_tree_model_get (tree_model, iter,
 400                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 401                             -1);
 402
 403         if (link != NULL &&
 404             ev_link_get_link_type (link) == EV_LINK_TYPE_PAGE) {
 405                 gchar *page_label;
 406                 gchar *page_string;
 407
 408                 page_label = ev_page_cache_get_page_label (sidebar_links->priv->page_cache, ev_link_get_page (link));
 409                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 410
 411                 g_object_set (cell,
 412                               "markup", page_string,
 413                               "visible", TRUE,
 414                               NULL);
 415
 416                 g_free (page_label);
 417                 g_free (page_string);
 418         } else {
 419                 g_object_set (cell,
 420                               "visible", FALSE,
 421                               NULL);
 422         }
 423 }
 424
 425 /* Public Functions */
 426
 427 GtkWidget *
 428 ev_sidebar_links_new (void)
 429 {
 430         GtkWidget *ev_sidebar_links;
 431
 432         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 433
 434         return ev_sidebar_links;
 435 }
 436
 437 static void
 438 ev_sidebar_links_clear_document (EvSidebarLinks *sidebar_links)
 439 {
 440         EvSidebarLinksPrivate *priv;
 441
 442         g_return_if_fail (EV_IS_SIDEBAR_LINKS (sidebar_links));
 443
 444         priv = sidebar_links->priv;
 445
 446         if (priv->document) {
 447                 g_object_unref (priv->document);
 448                 priv->document = NULL;
 449                 priv->page_cache = NULL;
 450         }
 451
 452         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 453 }
 454
 455 static gboolean
 456 update_page_callback_foreach (GtkTreeModel *model,
 457                               GtkTreePath  *path,
 458                               GtkTreeIter  *iter,
 459                               gpointer      data)
 460 {
 461         EvSidebarLinks *sidebar_links = (data);
 462         EvLink *link;
 463
 464         gtk_tree_model_get (model, iter,
 465                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 466                             -1);
 467
 468         if (link && ev_link_get_link_type (link) == EV_LINK_TYPE_PAGE) {
 469                 int current_page;
 470
 471                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 472                 if (ev_link_get_page (link) == current_page) {
 473                         GtkTreeSelection *selection;
 474
 475                         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 476
 477                         gtk_tree_selection_select_path (selection, path);
 478
 479                         return TRUE;
 480                 }
 481         }
 482
 483         return FALSE;
 484 }
 485
 486 static void
 487 update_page_callback (EvPageCache    *page_cache,
 488                       gint            current_page,
 489                       EvSidebarLinks *sidebar_links)
 490 {
 491         GtkTreeSelection *selection;
 492         /* We go through the tree linearly looking for the first page that
 493          * matches.  This is pretty inefficient.  We can do something neat with
 494          * a GtkTreeModelSort here to make it faster, if it turns out to be
 495          * slow.
 496          */
 497
 498         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 499
 500         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 501         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 502
 503         gtk_tree_selection_unselect_all (selection);
 504         gtk_tree_model_foreach (sidebar_links->priv->model,
 505                                 update_page_callback_foreach,
 506                                 sidebar_links);
 507
 508         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 509         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 510 }
 511
 512 static void
 513 row_activated_callback                  (GtkTreeView *treeview,
 514                                          GtkTreePath *arg1,
 515                                          GtkTreeViewColumn *arg2,
 516                                          gpointer user_data)
 517 {
 518         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 519                     gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 520         } else {
 521                     gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 522         }
 523
 524         return;
 525 }
 526
 527 static void
 528 job_finished_callback (EvJobLinks     *job,
 529                        EvSidebarLinks *sidebar_links)
 530 {
 531         EvSidebarLinksPrivate *priv;
 532         GtkTreeSelection *selection;
 533         GtkTreeIter iter;
 534         GtkTreePath *path;
 535         gboolean result;
 536
 537         priv = sidebar_links->priv;
 538
 539         priv->model = g_object_ref (job->model);
 540         g_object_notify (G_OBJECT (sidebar_links), "model");
 541
 542         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 543         g_object_unref (job);
 544
 545         /* Expand one level of the tree */
 546         path = gtk_tree_path_new_first ();
 547         for (result = gtk_tree_model_get_iter_first (priv->model, &iter);
 548              result;
 549              result = gtk_tree_model_iter_next (priv->model, &iter)) {
 550                 gtk_tree_view_expand_row (GTK_TREE_VIEW (priv->tree_view), path, FALSE);
 551                 gtk_tree_path_next (path);
 552         }
 553         gtk_tree_path_free (path);
 554
 555         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 556         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 557         priv->selection_id = g_signal_connect (selection, "changed",
 558                                                G_CALLBACK (selection_changed_callback),
 559                                                sidebar_links);
 560         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 561                                                   G_CALLBACK (update_page_callback),
 562                                                   sidebar_links);
 563         priv->row_activated_id = g_signal_connect (G_OBJECT (priv->tree_view), "row-activated",
 564                                                     G_CALLBACK (row_activated_callback), sidebar_links);
 565         update_page_callback (priv->page_cache,
 566                               ev_page_cache_get_current_page (priv->page_cache),
 567                               sidebar_links);
 568
 569 }
 570
 571 static void
 572 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 573                                EvDocument     *document)
 574 {
 575         EvSidebarLinks *sidebar_links;
 576         EvSidebarLinksPrivate *priv;
 577
 578         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 579         g_return_if_fail (EV_IS_DOCUMENT (document));
 580
 581         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 582
 583         priv = sidebar_links->priv;
 584
 585         g_object_ref (document);
 586
 587         priv->document = document;
 588         priv->page_cache = ev_document_get_page_cache (document);
 589
 590         priv->job = ev_job_links_new (document);
 591         g_signal_connect (priv->job,
 592                           "finished",
 593                           G_CALLBACK (job_finished_callback),
 594                           sidebar_links);
 595         /* The priority doesn't matter for this job */
 596         ev_job_queue_add_job (priv->job, EV_JOB_PRIORITY_LOW);
 597
 598 }
 599
 600 static gboolean
 601 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 602                                    EvDocument *document)
 603 {
 604         return (EV_IS_DOCUMENT_LINKS (document) &&
 605                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 606 }
 607
 608 static const gchar*
 609 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 610 {
 611     return _("Index");
 612 }
 613
 614 GtkWidget *
 615 ev_sidebar_links_get_treeview (EvSidebarLinks *sidebar)
 616 {
 617         return sidebar->priv->tree_view;
 618 }
 619
 620 static void
 621 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 622 {
 623         iface->support_document = ev_sidebar_links_support_document;
 624         iface->set_document = ev_sidebar_links_set_document;
 625         iface->get_label = ev_sidebar_links_get_label;
 626 }
 627