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         PROP_WIDGET,
  56 };
  57
  58
  59 static void links_page_num_func                         (GtkTreeViewColumn *tree_column,
  60                                                          GtkCellRenderer   *cell,
  61                                                          GtkTreeModel      *tree_model,
  62                                                          GtkTreeIter       *iter,
  63                                                          EvSidebarLinks    *sidebar_links);
  64 static void update_page_callback                        (EvPageCache       *page_cache,
  65                                                          gint               current_page,
  66                                                          EvSidebarLinks    *sidebar_links);
  67 static void row_activated_callback                      (GtkTreeView *treeview,
  68                                                          GtkTreePath *arg1,
  69                                                          GtkTreeViewColumn *arg2,
  70                                                          gpointer user_data);
  71 static void job_finished_callback                       (EvJobLinks     *job,
  72                                                          EvSidebarLinks *sidebar_links);
  73 static void ev_sidebar_links_page_iface_init            (EvSidebarPageIface *iface);
  74 static void ev_sidebar_links_set_document               (EvSidebarPage  *sidebar_page,
  75                                                          EvDocument     *document);
  76 static gboolean ev_sidebar_links_support_document       (EvSidebarPage  *sidebar_page,
  77                                                          EvDocument     *document);
  78 static const gchar* ev_sidebar_links_get_label          (EvSidebarPage *sidebar_page);
  79
  80
  81 G_DEFINE_TYPE_EXTENDED (EvSidebarLinks,
  82                         ev_sidebar_links,
  83                         GTK_TYPE_VBOX,
  84                         0,
  85                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  86                                                ev_sidebar_links_page_iface_init))
  87
  88
  89 #define EV_SIDEBAR_LINKS_GET_PRIVATE(object) \
  90         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_LINKS, EvSidebarLinksPrivate))
  91
  92 static void
  93 ev_sidebar_links_set_property (GObject      *object,
  94                                guint         prop_id,
  95                                const GValue *value,
  96                                GParamSpec   *pspec)
  97 {
  98         EvSidebarLinks *ev_sidebar_links;
  99         GtkTreeModel *model;
 100
 101         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 102
 103         switch (prop_id)
 104         {
 105         case PROP_MODEL:
 106                 model = ev_sidebar_links->priv->model;
 107                 ev_sidebar_links->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 108                 if (model)
 109                         g_object_unref (model);
 110                 break;
 111         default:
 112                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 113                 break;
 114         }
 115 }
 116
 117 static void
 118 ev_sidebar_links_get_property (GObject    *object,
 119                                guint       prop_id,
 120                                GValue     *value,
 121                                GParamSpec *pspec)
 122 {
 123         EvSidebarLinks *ev_sidebar_links;
 124
 125         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 126
 127         switch (prop_id)
 128         {
 129         case PROP_MODEL:
 130                 g_value_set_object (value, ev_sidebar_links->priv->model);
 131                 break;
 132         case PROP_WIDGET:
 133                 g_value_set_object (value, ev_sidebar_links->priv->tree_view);
 134                 break;
 135         default:
 136                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 137                 break;
 138         }
 139 }
 140
 141 static void
 142 ev_sidebar_links_dispose (GObject *object)
 143 {
 144         EvSidebarLinks *sidebar = EV_SIDEBAR_LINKS (object);
 145
 146         if (sidebar->priv->job) {
 147                 g_signal_handlers_disconnect_by_func (sidebar->priv->job,
 148                                                       job_finished_callback, sidebar);
 149                 ev_job_queue_remove_job (sidebar->priv->job);
 150                 g_object_unref (sidebar->priv->job);
 151                 sidebar->priv->job = NULL;
 152         }
 153
 154         if (sidebar->priv->model) {
 155                 g_object_unref (sidebar->priv->model);
 156                 sidebar->priv->model = NULL;
 157         }
 158
 159         if (sidebar->priv->document) {
 160                 g_object_unref (sidebar->priv->document);
 161                 sidebar->priv->document = NULL;
 162                 sidebar->priv->page_cache = NULL;
 163         }
 164
 165
 166         G_OBJECT_CLASS (ev_sidebar_links_parent_class)->dispose (object);
 167 }
 168
 169 static void
 170 ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class)
 171 {
 172         GObjectClass *g_object_class;
 173
 174         g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class);
 175
 176         g_object_class->set_property = ev_sidebar_links_set_property;
 177         g_object_class->get_property = ev_sidebar_links_get_property;
 178         g_object_class->dispose = ev_sidebar_links_dispose;
 179
 180         g_object_class_install_property (g_object_class,
 181                                          PROP_MODEL,
 182                                          g_param_spec_object ("model",
 183                                                               "Model",
 184                                                               "Current Model",
 185                                                               GTK_TYPE_TREE_MODEL,
 186                                                               G_PARAM_READWRITE));
 187         g_object_class_override_property (g_object_class,
 188                                           PROP_WIDGET,
 189                                           "main-widget");
 190
 191         g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate));
 192 }
 193
 194 static void
 195 selection_changed_callback (GtkTreeSelection   *selection,
 196                             EvSidebarLinks     *ev_sidebar_links)
 197 {
 198         EvDocument *document;
 199         GtkTreeModel *model;
 200         GtkTreeIter iter;
 201
 202         g_return_if_fail (EV_IS_SIDEBAR_LINKS (ev_sidebar_links));
 203
 204         document = EV_DOCUMENT (ev_sidebar_links->priv->document);
 205         g_return_if_fail (ev_sidebar_links->priv->document != NULL);
 206
 207         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 208                 EvLink *link;
 209
 210                 gtk_tree_model_get (model, &iter,
 211                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 212                                     -1);
 213
 214                 if (link == NULL)
 215                         return;
 216
 217                 g_signal_handler_block (ev_sidebar_links->priv->page_cache,
 218                                         ev_sidebar_links->priv->page_changed_id);
 219                 /* FIXME: we should handle this better.  This breaks w/ URLs */
 220                 ev_page_cache_set_link (ev_sidebar_links->priv->page_cache, link);
 221                 g_signal_handler_unblock (ev_sidebar_links->priv->page_cache,
 222                                           ev_sidebar_links->priv->page_changed_id);
 223
 224                 g_object_unref (link);
 225         }
 226 }
 227
 228 static GtkTreeModel *
 229 create_loading_model (void)
 230 {
 231         GtkTreeModel *retval;
 232         GtkTreeIter iter;
 233         gchar *markup;
 234
 235         /* Creates a fake model to indicate that we're loading */
 236         retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 237                                                      G_TYPE_STRING,
 238                                                      G_TYPE_OBJECT,
 239                                                      G_TYPE_BOOLEAN);
 240
 241         gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
 242         markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading..."));
 243         gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
 244                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup,
 245                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, FALSE,
 246                             EV_DOCUMENT_LINKS_COLUMN_LINK, NULL,
 247                             -1);
 248         g_free (markup);
 249
 250         return retval;
 251 }
 252
 253 static void
 254 print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar)
 255 {
 256         GtkWidget *window;
 257         GtkTreeSelection *selection;
 258         GtkTreeModel *model;
 259         GtkTreeIter iter;
 260
 261         selection = gtk_tree_view_get_selection
 262                 (GTK_TREE_VIEW (sidebar->priv->tree_view));
 263
 264         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 265                 EvLink *link;
 266                 int first_page, last_page;
 267
 268                 gtk_tree_model_get (model, &iter,
 269                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 270                                     -1);
 271                 first_page = ev_link_get_page (link) + 1;
 272
 273                 if (link)
 274                         g_object_unref (link);
 275
 276                 if (gtk_tree_model_iter_next (model, &iter)) {
 277                         gtk_tree_model_get (model, &iter,
 278                                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 279                                             -1);
 280                         last_page = ev_link_get_page (link);
 281
 282                         if (link)
 283                                 g_object_unref (link);
 284                 } else {
 285                         last_page = -1;
 286                 }
 287
 288                 window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar));
 289                 if (EV_IS_WINDOW (window)) {
 290                         ev_window_print_range (EV_WINDOW (window),
 291                                                first_page, last_page);
 292                 }
 293         }
 294 }
 295
 296 static GtkMenu *
 297 build_popup_menu (EvSidebarLinks *sidebar)
 298 {
 299         GtkWidget *menu;
 300         GtkWidget *item;
 301
 302         menu = gtk_menu_new ();
 303         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 304         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 305         gtk_widget_show (item);
 306         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 307         g_signal_connect (item, "activate",
 308                           G_CALLBACK (print_section_cb), sidebar);
 309
 310         return GTK_MENU (menu);
 311 }
 312
 313 static void
 314 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 315 {
 316         GtkMenu *menu = build_popup_menu (sidebar);
 317
 318         gtk_menu_popup (menu, NULL, NULL,
 319                         ev_gui_menu_position_tree_selection,
 320                         sidebar->priv->tree_view, 0,
 321                         gtk_get_current_event_time ());
 322         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 323 }
 324
 325 static gboolean
 326 button_press_cb (GtkWidget *treeview,
 327                  GdkEventButton *event,
 328                  EvSidebarLinks *sidebar)
 329 {
 330         GtkTreePath *path = NULL;
 331
 332         if (event->button == 3) {
 333                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 334                                                    event->x,
 335                                                    event->y,
 336                                                    &path,
 337                                                    NULL, NULL, NULL)) {
 338                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 339                                                   path, NULL, FALSE);
 340                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 341                                         NULL, NULL, NULL, event->button,
 342                                         gtk_get_current_event_time ());
 343                         gtk_tree_path_free (path);
 344
 345                         return TRUE;
 346                 }
 347         }
 348
 349         return FALSE;
 350 }
 351
 352
 353 static void
 354 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 355 {
 356         EvSidebarLinksPrivate *priv;
 357         GtkWidget *swindow;
 358         GtkTreeViewColumn *column;
 359         GtkCellRenderer *renderer;
 360         GtkTreeSelection *selection;
 361         GtkTreeModel *loading_model;
 362
 363         priv = ev_sidebar_links->priv;
 364
 365         swindow = gtk_scrolled_window_new (NULL, NULL);
 366
 367         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 368                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 369         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 370                                              GTK_SHADOW_IN);
 371
 372         /* Create tree view */
 373         loading_model = create_loading_model ();
 374         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 375         g_object_unref (loading_model);
 376
 377         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 378         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 379         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 380         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 381
 382         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 383         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 384
 385         column = gtk_tree_view_column_new ();
 386         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 387         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 388
 389         renderer = (GtkCellRenderer*)
 390                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 391                               "ellipsize", PANGO_ELLIPSIZE_END,
 392                               NULL);
 393         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 394         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 395                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 396                                              NULL);
 397
 398
 399         renderer = gtk_cell_renderer_text_new ();
 400         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 401         gtk_tree_view_column_set_cell_data_func (GTK_TREE_VIEW_COLUMN (column), renderer,
 402                                                  (GtkTreeCellDataFunc) links_page_num_func,
 403                                                  ev_sidebar_links, NULL);
 404
 405         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 406                           "button_press_event",
 407                           G_CALLBACK (button_press_cb),
 408                           ev_sidebar_links);
 409         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 410                           "popup_menu",
 411                           G_CALLBACK (popup_menu_cb),
 412                           ev_sidebar_links);
 413 }
 414
 415 static void
 416 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 417 {
 418         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 419
 420         ev_sidebar_links_construct (ev_sidebar_links);
 421 }
 422
 423 static void
 424 links_page_num_func (GtkTreeViewColumn *tree_column,
 425                      GtkCellRenderer   *cell,
 426                      GtkTreeModel      *tree_model,
 427                      GtkTreeIter       *iter,
 428                      EvSidebarLinks    *sidebar_links)
 429 {
 430         EvLink *link;
 431
 432         gtk_tree_model_get (tree_model, iter,
 433                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 434                             -1);
 435
 436         if (link != NULL &&
 437             ev_link_get_link_type (link) == EV_LINK_TYPE_PAGE) {
 438                 gchar *page_label;
 439                 gchar *page_string;
 440
 441                 page_label = ev_page_cache_get_page_label (sidebar_links->priv->page_cache, ev_link_get_page (link));
 442                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 443
 444                 g_object_set (cell,
 445                               "markup", page_string,
 446                               "visible", TRUE,
 447                               NULL);
 448
 449                 g_free (page_label);
 450                 g_free (page_string);
 451         } else {
 452                 g_object_set (cell,
 453                               "visible", FALSE,
 454                               NULL);
 455         }
 456
 457         if (link)
 458                 g_object_unref (link);
 459 }
 460
 461 /* Public Functions */
 462
 463 GtkWidget *
 464 ev_sidebar_links_new (void)
 465 {
 466         GtkWidget *ev_sidebar_links;
 467
 468         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 469
 470         return ev_sidebar_links;
 471 }
 472
 473 static gboolean
 474 update_page_callback_foreach (GtkTreeModel *model,
 475                               GtkTreePath  *path,
 476                               GtkTreeIter  *iter,
 477                               gpointer      data)
 478 {
 479         EvSidebarLinks *sidebar_links = (data);
 480         EvLink *link;
 481
 482         gtk_tree_model_get (model, iter,
 483                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 484                             -1);
 485
 486         if (link && ev_link_get_link_type (link) == EV_LINK_TYPE_PAGE) {
 487                 int current_page;
 488
 489                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 490                 if (ev_link_get_page (link) == current_page) {
 491                         GtkTreeSelection *selection;
 492
 493                         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 494
 495                         gtk_tree_selection_select_path (selection, path);
 496
 497                         g_object_unref (link);
 498                         return TRUE;
 499                 }
 500         }
 501
 502         if (link)
 503                 g_object_unref (link);
 504
 505         return FALSE;
 506 }
 507
 508 static void
 509 update_page_callback (EvPageCache    *page_cache,
 510                       gint            current_page,
 511                       EvSidebarLinks *sidebar_links)
 512 {
 513         GtkTreeSelection *selection;
 514         /* We go through the tree linearly looking for the first page that
 515          * matches.  This is pretty inefficient.  We can do something neat with
 516          * a GtkTreeModelSort here to make it faster, if it turns out to be
 517          * slow.
 518          */
 519
 520         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 521
 522         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 523         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 524
 525         gtk_tree_selection_unselect_all (selection);
 526         gtk_tree_model_foreach (sidebar_links->priv->model,
 527                                 update_page_callback_foreach,
 528                                 sidebar_links);
 529
 530         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 531         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 532 }
 533
 534 static void
 535 row_activated_callback                  (GtkTreeView *treeview,
 536                                          GtkTreePath *arg1,
 537                                          GtkTreeViewColumn *arg2,
 538                                          gpointer user_data)
 539 {
 540         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 541                     gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 542         } else {
 543                     gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 544         }
 545
 546         return;
 547 }
 548
 549 static void
 550 expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent)
 551 {
 552         GtkTreeIter iter;
 553         gboolean expand;
 554
 555         if (gtk_tree_model_iter_children (model, &iter, parent)) {
 556                 do {
 557                         gtk_tree_model_get (model, &iter,
 558                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand,
 559                                             -1);
 560                         if (expand) {
 561                                 GtkTreePath *path;
 562
 563                                 path = gtk_tree_model_get_path (model, &iter);
 564                                 gtk_tree_view_expand_row (tree_view, path, FALSE);
 565                                 gtk_tree_path_free (path);
 566                         }
 567
 568                         expand_open_links (tree_view, model, &iter);
 569                 } while (gtk_tree_model_iter_next (model, &iter));
 570         }
 571 }
 572
 573 static void
 574 job_finished_callback (EvJobLinks     *job,
 575                        EvSidebarLinks *sidebar_links)
 576 {
 577         EvSidebarLinksPrivate *priv;
 578         GtkTreeSelection *selection;
 579
 580         priv = sidebar_links->priv;
 581
 582         priv->model = job->model;
 583         g_object_notify (G_OBJECT (sidebar_links), "model");
 584
 585         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 586
 587         g_object_unref (job);
 588         priv->job = NULL;
 589
 590         expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL);
 591
 592         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 593         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 594         priv->selection_id = g_signal_connect (selection, "changed",
 595                                                G_CALLBACK (selection_changed_callback),
 596                                                sidebar_links);
 597         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 598                                                   G_CALLBACK (update_page_callback),
 599                                                   sidebar_links);
 600         priv->row_activated_id = g_signal_connect (G_OBJECT (priv->tree_view), "row-activated",
 601                                                     G_CALLBACK (row_activated_callback), sidebar_links);
 602         update_page_callback (priv->page_cache,
 603                               ev_page_cache_get_current_page (priv->page_cache),
 604                               sidebar_links);
 605
 606 }
 607
 608 static void
 609 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 610                                EvDocument     *document)
 611 {
 612         EvSidebarLinks *sidebar_links;
 613         EvSidebarLinksPrivate *priv;
 614
 615         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 616         g_return_if_fail (EV_IS_DOCUMENT (document));
 617
 618         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 619
 620         priv = sidebar_links->priv;
 621
 622         if (priv->document) {
 623                 gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 624                 g_object_unref (priv->document);
 625         }
 626
 627         priv->document = g_object_ref (document);
 628         priv->page_cache = ev_page_cache_get (document);
 629
 630         if (priv->job) {
 631                 g_signal_handlers_disconnect_by_func (priv->job,
 632                                                       job_finished_callback,
 633                                                       sidebar_links);
 634                 g_object_unref (priv->job);
 635         }
 636
 637         priv->job = ev_job_links_new (document);
 638         g_signal_connect (priv->job,
 639                           "finished",
 640                           G_CALLBACK (job_finished_callback),
 641                           sidebar_links);
 642         /* The priority doesn't matter for this job */
 643         ev_job_queue_add_job (priv->job, EV_JOB_PRIORITY_LOW);
 644 }
 645
 646 static gboolean
 647 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 648                                    EvDocument *document)
 649 {
 650         return (EV_IS_DOCUMENT_LINKS (document) &&
 651                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 652 }
 653
 654 static const gchar*
 655 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 656 {
 657     return _("Index");
 658 }
 659
 660 static void
 661 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 662 {
 663         iface->support_document = ev_sidebar_links_support_document;
 664         iface->set_document = ev_sidebar_links_set_document;
 665         iface->get_label = ev_sidebar_links_get_label;
 666 }
 667