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