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
  37 struct _EvSidebarLinksPrivate {
  38         GtkWidget *tree_view;
  39
  40         /* Keep these ids around for blocking */
  41         guint selection_id;
  42         guint page_changed_id;
  43         guint row_activated_id;
  44
  45         EvJob *job;
  46         GtkTreeModel *model;
  47         EvDocument *document;
  48         EvPageCache *page_cache;
  49 };
  50
  51 enum {
  52         PROP_0,
  53         PROP_MODEL,
  54         PROP_WIDGET,
  55 };
  56
  57 enum {
  58         LINK_ACTIVATED,
  59         N_SIGNALS
  60 };
  61
  62 static void update_page_callback                        (EvPageCache       *page_cache,
  63                                                          gint               current_page,
  64                                                          EvSidebarLinks    *sidebar_links);
  65 static void row_activated_callback                      (GtkTreeView *treeview,
  66                                                          GtkTreePath *arg1,
  67                                                          GtkTreeViewColumn *arg2,
  68                                                          gpointer user_data);
  69 static void job_finished_callback                       (EvJobLinks     *job,
  70                                                          EvSidebarLinks *sidebar_links);
  71 static void ev_sidebar_links_page_iface_init            (EvSidebarPageIface *iface);
  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 static guint signals[N_SIGNALS];
  79
  80 G_DEFINE_TYPE_EXTENDED (EvSidebarLinks,
  81                         ev_sidebar_links,
  82                         GTK_TYPE_VBOX,
  83                         0,
  84                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  85                                                ev_sidebar_links_page_iface_init))
  86
  87
  88 #define EV_SIDEBAR_LINKS_GET_PRIVATE(object) \
  89         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_LINKS, EvSidebarLinksPrivate))
  90
  91 static void
  92 ev_sidebar_links_set_property (GObject      *object,
  93                                guint         prop_id,
  94                                const GValue *value,
  95                                GParamSpec   *pspec)
  96 {
  97         EvSidebarLinks *ev_sidebar_links;
  98         GtkTreeModel *model;
  99
 100         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 101
 102         switch (prop_id)
 103         {
 104         case PROP_MODEL:
 105                 model = ev_sidebar_links->priv->model;
 106                 ev_sidebar_links->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 107                 if (model)
 108                         g_object_unref (model);
 109                 break;
 110         default:
 111                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 112                 break;
 113         }
 114 }
 115
 116 static void
 117 ev_sidebar_links_get_property (GObject    *object,
 118                                guint       prop_id,
 119                                GValue     *value,
 120                                GParamSpec *pspec)
 121 {
 122         EvSidebarLinks *ev_sidebar_links;
 123
 124         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 125
 126         switch (prop_id)
 127         {
 128         case PROP_MODEL:
 129                 g_value_set_object (value, ev_sidebar_links->priv->model);
 130                 break;
 131         case PROP_WIDGET:
 132                 g_value_set_object (value, ev_sidebar_links->priv->tree_view);
 133                 break;
 134         default:
 135                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 136                 break;
 137         }
 138 }
 139
 140 static void
 141 ev_sidebar_links_dispose (GObject *object)
 142 {
 143         EvSidebarLinks *sidebar = EV_SIDEBAR_LINKS (object);
 144
 145         if (sidebar->priv->job) {
 146                 g_signal_handlers_disconnect_by_func (sidebar->priv->job,
 147                                                       job_finished_callback, sidebar);
 148                 ev_job_queue_remove_job (sidebar->priv->job);
 149                 g_object_unref (sidebar->priv->job);
 150                 sidebar->priv->job = NULL;
 151         }
 152
 153         if (sidebar->priv->model) {
 154                 g_object_unref (sidebar->priv->model);
 155                 sidebar->priv->model = NULL;
 156         }
 157
 158         if (sidebar->priv->document) {
 159                 g_object_unref (sidebar->priv->document);
 160                 sidebar->priv->document = NULL;
 161                 sidebar->priv->page_cache = NULL;
 162         }
 163
 164         G_OBJECT_CLASS (ev_sidebar_links_parent_class)->dispose (object);
 165 }
 166
 167 static void
 168 ev_sidebar_links_map (GtkWidget *widget)
 169 {
 170         EvSidebarLinks *links;
 171
 172         links = EV_SIDEBAR_LINKS (widget);
 173
 174         GTK_WIDGET_CLASS (ev_sidebar_links_parent_class)->map (widget);
 175
 176         if (links->priv->model) {
 177                 update_page_callback (links->priv->page_cache,
 178                                       ev_page_cache_get_current_page (links->priv->page_cache),
 179                                       links);
 180         }
 181 }
 182
 183 static void
 184 ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class)
 185 {
 186         GObjectClass   *g_object_class;
 187         GtkWidgetClass *widget_class;
 188
 189         g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class);
 190         widget_class = GTK_WIDGET_CLASS (ev_sidebar_links_class);
 191
 192         g_object_class->set_property = ev_sidebar_links_set_property;
 193         g_object_class->get_property = ev_sidebar_links_get_property;
 194         g_object_class->dispose = ev_sidebar_links_dispose;
 195
 196         widget_class->map = ev_sidebar_links_map;
 197
 198         signals[LINK_ACTIVATED] = g_signal_new ("link-activated",
 199                          G_TYPE_FROM_CLASS (g_object_class),
 200                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 201                          G_STRUCT_OFFSET (EvSidebarLinksClass, link_activated),
 202                          NULL, NULL,
 203                          g_cclosure_marshal_VOID__OBJECT,
 204                          G_TYPE_NONE, 1, G_TYPE_OBJECT);
 205
 206         g_object_class_install_property (g_object_class,
 207                                          PROP_MODEL,
 208                                          g_param_spec_object ("model",
 209                                                               "Model",
 210                                                               "Current Model",
 211                                                               GTK_TYPE_TREE_MODEL,
 212                                                               G_PARAM_READWRITE));
 213         g_object_class_override_property (g_object_class,
 214                                           PROP_WIDGET,
 215                                           "main-widget");
 216
 217         g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate));
 218 }
 219
 220 static void
 221 selection_changed_callback (GtkTreeSelection   *selection,
 222                             EvSidebarLinks     *ev_sidebar_links)
 223 {
 224         EvDocument *document;
 225         GtkTreeModel *model;
 226         GtkTreeIter iter;
 227
 228         document = EV_DOCUMENT (ev_sidebar_links->priv->document);
 229         g_return_if_fail (ev_sidebar_links->priv->document != NULL);
 230
 231         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 232                 EvLink *link;
 233
 234                 gtk_tree_model_get (model, &iter,
 235                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 236                                     -1);
 237
 238                 if (link == NULL)
 239                         return;
 240
 241                 g_signal_handler_block (ev_sidebar_links->priv->page_cache,
 242                                         ev_sidebar_links->priv->page_changed_id);
 243                 g_signal_emit (ev_sidebar_links, signals[LINK_ACTIVATED], 0, link);
 244                 g_signal_handler_unblock (ev_sidebar_links->priv->page_cache,
 245                                           ev_sidebar_links->priv->page_changed_id);
 246
 247                 g_object_unref (link);
 248         }
 249 }
 250
 251 static GtkTreeModel *
 252 create_loading_model (void)
 253 {
 254         GtkTreeModel *retval;
 255         GtkTreeIter iter;
 256         gchar *markup;
 257
 258         /* Creates a fake model to indicate that we're loading */
 259         retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 260                                                      G_TYPE_STRING,
 261                                                      G_TYPE_OBJECT,
 262                                                      G_TYPE_BOOLEAN,
 263                                                      G_TYPE_STRING);
 264
 265         gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
 266         markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading..."));
 267         gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
 268                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup,
 269                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, FALSE,
 270                             EV_DOCUMENT_LINKS_COLUMN_LINK, NULL,
 271                             -1);
 272         g_free (markup);
 273
 274         return retval;
 275 }
 276
 277 static void
 278 print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar)
 279 {
 280         GtkWidget *window;
 281         GtkTreeSelection *selection;
 282         GtkTreeModel *model;
 283         GtkTreeIter iter;
 284
 285         selection = gtk_tree_view_get_selection
 286                 (GTK_TREE_VIEW (sidebar->priv->tree_view));
 287
 288         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 289                 EvLink *link;
 290                 int first_page, last_page = -1;
 291
 292                 gtk_tree_model_get (model, &iter,
 293                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 294                                     -1);
 295
 296                 if (!link)
 297                         return;
 298
 299                 first_page = ev_link_get_page (link);
 300                 if (first_page == -1) {
 301                         g_object_unref (link);
 302                         return;
 303                 }
 304
 305                 first_page++;
 306                 g_object_unref (link);
 307
 308                 if (gtk_tree_model_iter_next (model, &iter)) {
 309                         gtk_tree_model_get (model, &iter,
 310                                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 311                                             -1);
 312
 313                         if (link) {
 314                                 last_page = ev_link_get_page (link);
 315                                 g_object_unref (link);
 316                         }
 317                 } else {
 318                         last_page = ev_page_cache_get_n_pages (sidebar->priv->page_cache);
 319                 }
 320
 321                 if (last_page == -1)
 322                         last_page = ev_page_cache_get_n_pages (sidebar->priv->page_cache);
 323
 324                 window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar));
 325                 if (EV_IS_WINDOW (window)) {
 326 #ifdef WITH_PRINT
 327                         ev_window_print_range (EV_WINDOW (window),
 328                                                first_page, last_page);
 329 #endif
 330                 }
 331         }
 332 }
 333
 334 static GtkMenu *
 335 build_popup_menu (EvSidebarLinks *sidebar)
 336 {
 337         GtkWidget *menu;
 338         GtkWidget *item;
 339
 340         menu = gtk_menu_new ();
 341         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 342         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 343         gtk_widget_show (item);
 344         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 345         g_signal_connect (item, "activate",
 346                           G_CALLBACK (print_section_cb), sidebar);
 347
 348         return GTK_MENU (menu);
 349 }
 350
 351 static void
 352 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 353 {
 354         GtkMenu *menu = build_popup_menu (sidebar);
 355
 356         gtk_menu_popup (menu, NULL, NULL,
 357                         ev_gui_menu_position_tree_selection,
 358                         sidebar->priv->tree_view, 0,
 359                         gtk_get_current_event_time ());
 360         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 361 }
 362
 363 static gboolean
 364 button_press_cb (GtkWidget *treeview,
 365                  GdkEventButton *event,
 366                  EvSidebarLinks *sidebar)
 367 {
 368         GtkTreePath *path = NULL;
 369
 370         if (event->button == 3) {
 371                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 372                                                    event->x,
 373                                                    event->y,
 374                                                    &path,
 375                                                    NULL, NULL, NULL)) {
 376                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 377                                                   path, NULL, FALSE);
 378                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 379                                         NULL, NULL, NULL, event->button,
 380                                         gtk_get_current_event_time ());
 381                         gtk_tree_path_free (path);
 382
 383                         return TRUE;
 384                 }
 385         }
 386
 387         return FALSE;
 388 }
 389
 390
 391 static void
 392 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 393 {
 394         EvSidebarLinksPrivate *priv;
 395         GtkWidget *swindow;
 396         GtkTreeViewColumn *column;
 397         GtkCellRenderer *renderer;
 398         GtkTreeSelection *selection;
 399         GtkTreeModel *loading_model;
 400
 401         priv = ev_sidebar_links->priv;
 402
 403         swindow = gtk_scrolled_window_new (NULL, NULL);
 404
 405         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 406                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 407         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 408                                              GTK_SHADOW_IN);
 409
 410         /* Create tree view */
 411         loading_model = create_loading_model ();
 412         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 413         g_object_unref (loading_model);
 414
 415         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 416         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 417         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 418         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 419
 420         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 421         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 422
 423         column = gtk_tree_view_column_new ();
 424         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 425         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 426
 427         renderer = (GtkCellRenderer*)
 428                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 429                               "ellipsize", PANGO_ELLIPSIZE_END,
 430                               NULL);
 431         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 432         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 433                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 434                                              NULL);
 435
 436
 437         renderer = gtk_cell_renderer_text_new ();
 438         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 439         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 440                                              "text", EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL,
 441                                              NULL);
 442         g_object_set (G_OBJECT (renderer), "style", PANGO_STYLE_ITALIC, NULL);
 443
 444         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 445                           "button_press_event",
 446                           G_CALLBACK (button_press_cb),
 447                           ev_sidebar_links);
 448         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 449                           "popup_menu",
 450                           G_CALLBACK (popup_menu_cb),
 451                           ev_sidebar_links);
 452 }
 453
 454 static void
 455 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 456 {
 457         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 458
 459         ev_sidebar_links_construct (ev_sidebar_links);
 460 }
 461
 462 static gboolean
 463 fill_page_labels (GtkTreeModel *tree_model,
 464                   GtkTreePath *path,
 465                   GtkTreeIter *iter,
 466                   EvSidebarLinks    *sidebar_links)
 467 {
 468         EvLink *link;
 469         gint page;
 470         gchar *page_label;
 471
 472         gtk_tree_model_get (tree_model, iter,
 473                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 474                             -1);
 475
 476         if (!link)
 477                 return FALSE;
 478
 479         page = ev_link_get_page (link);
 480
 481         if (page < 0)
 482                 return FALSE;
 483
 484         page_label = ev_page_cache_get_page_label (sidebar_links->priv->page_cache,
 485                                                    page);
 486         gtk_tree_store_set (GTK_TREE_STORE (tree_model), iter,
 487                             EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL, page_label,
 488                             -1);
 489
 490         g_free (page_label);
 491
 492         g_object_unref (link);
 493         return FALSE;
 494 }
 495
 496 /* Public Functions */
 497
 498 GtkWidget *
 499 ev_sidebar_links_new (void)
 500 {
 501         GtkWidget *ev_sidebar_links;
 502
 503         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 504
 505         return ev_sidebar_links;
 506 }
 507
 508 static gboolean
 509 update_page_callback_foreach (GtkTreeModel *model,
 510                               GtkTreePath  *path,
 511                               GtkTreeIter  *iter,
 512                               gpointer      data)
 513 {
 514         EvSidebarLinks *sidebar_links = (data);
 515         EvLink *link;
 516
 517         gtk_tree_model_get (model, iter,
 518                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 519                             -1);
 520
 521         if (link) {
 522                 int current_page;
 523                 int dest_page;
 524
 525                 dest_page = ev_link_get_page (link);
 526                 g_object_unref (link);
 527
 528                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 529
 530                 if (dest_page == current_page) {
 531                         gtk_tree_view_expand_to_path (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 532                                                       path);
 533                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 534                                                   path, NULL, FALSE);
 535
 536                         return TRUE;
 537                 }
 538         }
 539
 540         return FALSE;
 541 }
 542
 543 static void
 544 update_page_callback (EvPageCache    *page_cache,
 545                       gint            current_page,
 546                       EvSidebarLinks *sidebar_links)
 547 {
 548         GtkTreeSelection *selection;
 549         GtkTreeModel *model;
 550         GtkTreeIter iter;
 551
 552         /* Widget is not currently visible */
 553         if (!GTK_WIDGET_MAPPED (sidebar_links))
 554                 return;
 555
 556         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 557
 558         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 559                 EvLink *link;
 560
 561                 gtk_tree_model_get (model, &iter,
 562                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 563                                     -1);
 564                 if (link) {
 565                         gint dest_page;
 566
 567                         dest_page = ev_link_get_page (link);
 568                         g_object_unref (link);
 569
 570                         if (dest_page == current_page)
 571                                 return;
 572                 }
 573         }
 574
 575         /* We go through the tree linearly looking for the first page that
 576          * matches.  This is pretty inefficient.  We can do something neat with
 577          * a GtkTreeModelSort here to make it faster, if it turns out to be
 578          * slow.
 579          */
 580         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 581         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 582
 583         gtk_tree_model_foreach (model,
 584                                 update_page_callback_foreach,
 585                                 sidebar_links);
 586
 587         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 588         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 589 }
 590
 591 static void
 592 row_activated_callback (GtkTreeView       *treeview,
 593                         GtkTreePath       *arg1,
 594                         GtkTreeViewColumn *arg2,
 595                         gpointer           user_data)
 596 {
 597         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 598                 gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 599         } else {
 600                 gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 601         }
 602 }
 603
 604 static void
 605 expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent)
 606 {
 607         GtkTreeIter iter;
 608         gboolean expand;
 609
 610         if (gtk_tree_model_iter_children (model, &iter, parent)) {
 611                 do {
 612                         gtk_tree_model_get (model, &iter,
 613                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand,
 614                                             -1);
 615                         if (expand) {
 616                                 GtkTreePath *path;
 617
 618                                 path = gtk_tree_model_get_path (model, &iter);
 619                                 gtk_tree_view_expand_row (tree_view, path, FALSE);
 620                                 gtk_tree_path_free (path);
 621                         }
 622
 623                         expand_open_links (tree_view, model, &iter);
 624                 } while (gtk_tree_model_iter_next (model, &iter));
 625         }
 626 }
 627
 628 static void
 629 job_finished_callback (EvJobLinks     *job,
 630                        EvSidebarLinks *sidebar_links)
 631 {
 632         EvSidebarLinksPrivate *priv;
 633         GtkTreeSelection *selection;
 634
 635         priv = sidebar_links->priv;
 636
 637         priv->model = job->model;
 638         g_object_notify (G_OBJECT (sidebar_links), "model");
 639
 640         gtk_tree_model_foreach (priv->model, (GtkTreeModelForeachFunc)fill_page_labels, sidebar_links);
 641
 642         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 643
 644         g_object_unref (job);
 645         priv->job = NULL;
 646
 647         expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL);
 648
 649         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 650         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 651         priv->selection_id = g_signal_connect (selection, "changed",
 652                                                G_CALLBACK (selection_changed_callback),
 653                                                sidebar_links);
 654         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 655                                                   G_CALLBACK (update_page_callback),
 656                                                   sidebar_links);
 657         priv->row_activated_id = g_signal_connect (G_OBJECT (priv->tree_view), "row-activated",
 658                                                     G_CALLBACK (row_activated_callback), sidebar_links);
 659         update_page_callback (priv->page_cache,
 660                               ev_page_cache_get_current_page (priv->page_cache),
 661                               sidebar_links);
 662
 663 }
 664
 665 static void
 666 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 667                                EvDocument     *document)
 668 {
 669         EvSidebarLinks *sidebar_links;
 670         EvSidebarLinksPrivate *priv;
 671
 672         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 673         g_return_if_fail (EV_IS_DOCUMENT (document));
 674
 675         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 676
 677         priv = sidebar_links->priv;
 678
 679         if (priv->document) {
 680                 gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 681                 g_object_unref (priv->document);
 682         }
 683
 684         priv->document = g_object_ref (document);
 685         priv->page_cache = ev_page_cache_get (document);
 686
 687         if (priv->job) {
 688                 g_signal_handlers_disconnect_by_func (priv->job,
 689                                                       job_finished_callback,
 690                                                       sidebar_links);
 691                 g_object_unref (priv->job);
 692         }
 693
 694         priv->job = ev_job_links_new (document);
 695         g_signal_connect (priv->job,
 696                           "finished",
 697                           G_CALLBACK (job_finished_callback),
 698                           sidebar_links);
 699         /* The priority doesn't matter for this job */
 700         ev_job_queue_add_job (priv->job, EV_JOB_PRIORITY_LOW);
 701 }
 702
 703 static gboolean
 704 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 705                                    EvDocument *document)
 706 {
 707         return (EV_IS_DOCUMENT_LINKS (document) &&
 708                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 709 }
 710
 711 static const gchar*
 712 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 713 {
 714     return _("Index");
 715 }
 716
 717 static void
 718 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 719 {
 720         iface->support_document = ev_sidebar_links_support_document;
 721         iface->set_document = ev_sidebar_links_set_document;
 722         iface->get_label = ev_sidebar_links_get_label;
 723 }
 724