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 links_page_num_func                         (GtkTreeViewColumn *tree_column,
  63                                                          GtkCellRenderer   *cell,
  64                                                          GtkTreeModel      *tree_model,
  65                                                          GtkTreeIter       *iter,
  66                                                          EvSidebarLinks    *sidebar_links);
  67 static void update_page_callback                        (EvPageCache       *page_cache,
  68                                                          gint               current_page,
  69                                                          EvSidebarLinks    *sidebar_links);
  70 static void row_activated_callback                      (GtkTreeView *treeview,
  71                                                          GtkTreePath *arg1,
  72                                                          GtkTreeViewColumn *arg2,
  73                                                          gpointer user_data);
  74 static void job_finished_callback                       (EvJobLinks     *job,
  75                                                          EvSidebarLinks *sidebar_links);
  76 static void ev_sidebar_links_page_iface_init            (EvSidebarPageIface *iface);
  77 static void ev_sidebar_links_set_document               (EvSidebarPage  *sidebar_page,
  78                                                          EvDocument     *document);
  79 static gboolean ev_sidebar_links_support_document       (EvSidebarPage  *sidebar_page,
  80                                                          EvDocument     *document);
  81 static const gchar* ev_sidebar_links_get_label          (EvSidebarPage *sidebar_page);
  82
  83 static guint signals[N_SIGNALS];
  84
  85 G_DEFINE_TYPE_EXTENDED (EvSidebarLinks,
  86                         ev_sidebar_links,
  87                         GTK_TYPE_VBOX,
  88                         0,
  89                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  90                                                ev_sidebar_links_page_iface_init))
  91
  92
  93 #define EV_SIDEBAR_LINKS_GET_PRIVATE(object) \
  94         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_LINKS, EvSidebarLinksPrivate))
  95
  96 static void
  97 ev_sidebar_links_set_property (GObject      *object,
  98                                guint         prop_id,
  99                                const GValue *value,
 100                                GParamSpec   *pspec)
 101 {
 102         EvSidebarLinks *ev_sidebar_links;
 103         GtkTreeModel *model;
 104
 105         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 106
 107         switch (prop_id)
 108         {
 109         case PROP_MODEL:
 110                 model = ev_sidebar_links->priv->model;
 111                 ev_sidebar_links->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 112                 if (model)
 113                         g_object_unref (model);
 114                 break;
 115         default:
 116                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 117                 break;
 118         }
 119 }
 120
 121 static void
 122 ev_sidebar_links_get_property (GObject    *object,
 123                                guint       prop_id,
 124                                GValue     *value,
 125                                GParamSpec *pspec)
 126 {
 127         EvSidebarLinks *ev_sidebar_links;
 128
 129         ev_sidebar_links = EV_SIDEBAR_LINKS (object);
 130
 131         switch (prop_id)
 132         {
 133         case PROP_MODEL:
 134                 g_value_set_object (value, ev_sidebar_links->priv->model);
 135                 break;
 136         case PROP_WIDGET:
 137                 g_value_set_object (value, ev_sidebar_links->priv->tree_view);
 138                 break;
 139         default:
 140                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 141                 break;
 142         }
 143 }
 144
 145 static void
 146 ev_sidebar_links_dispose (GObject *object)
 147 {
 148         EvSidebarLinks *sidebar = EV_SIDEBAR_LINKS (object);
 149
 150         if (sidebar->priv->job) {
 151                 g_signal_handlers_disconnect_by_func (sidebar->priv->job,
 152                                                       job_finished_callback, sidebar);
 153                 ev_job_queue_remove_job (sidebar->priv->job);
 154                 g_object_unref (sidebar->priv->job);
 155                 sidebar->priv->job = NULL;
 156         }
 157
 158         if (sidebar->priv->model) {
 159                 g_object_unref (sidebar->priv->model);
 160                 sidebar->priv->model = NULL;
 161         }
 162
 163         if (sidebar->priv->document) {
 164                 g_object_unref (sidebar->priv->document);
 165                 sidebar->priv->document = NULL;
 166                 sidebar->priv->page_cache = NULL;
 167         }
 168
 169
 170         G_OBJECT_CLASS (ev_sidebar_links_parent_class)->dispose (object);
 171 }
 172
 173 static void
 174 ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class)
 175 {
 176         GObjectClass *g_object_class;
 177
 178         g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class);
 179
 180         g_object_class->set_property = ev_sidebar_links_set_property;
 181         g_object_class->get_property = ev_sidebar_links_get_property;
 182         g_object_class->dispose = ev_sidebar_links_dispose;
 183
 184         signals[LINK_ACTIVATED] = g_signal_new ("link-activated",
 185                          G_TYPE_FROM_CLASS (g_object_class),
 186                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 187                          G_STRUCT_OFFSET (EvSidebarLinksClass, link_activated),
 188                          NULL, NULL,
 189                          g_cclosure_marshal_VOID__OBJECT,
 190                          G_TYPE_NONE, 1, G_TYPE_OBJECT);
 191
 192         g_object_class_install_property (g_object_class,
 193                                          PROP_MODEL,
 194                                          g_param_spec_object ("model",
 195                                                               "Model",
 196                                                               "Current Model",
 197                                                               GTK_TYPE_TREE_MODEL,
 198                                                               G_PARAM_READWRITE));
 199         g_object_class_override_property (g_object_class,
 200                                           PROP_WIDGET,
 201                                           "main-widget");
 202
 203         g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate));
 204 }
 205
 206 static void
 207 selection_changed_callback (GtkTreeSelection   *selection,
 208                             EvSidebarLinks     *ev_sidebar_links)
 209 {
 210         EvDocument *document;
 211         GtkTreeModel *model;
 212         GtkTreeIter iter;
 213
 214         g_return_if_fail (EV_IS_SIDEBAR_LINKS (ev_sidebar_links));
 215
 216         document = EV_DOCUMENT (ev_sidebar_links->priv->document);
 217         g_return_if_fail (ev_sidebar_links->priv->document != NULL);
 218
 219         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 220                 EvLink *link;
 221
 222                 gtk_tree_model_get (model, &iter,
 223                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 224                                     -1);
 225
 226                 if (link == NULL)
 227                         return;
 228
 229                 g_signal_handler_block (ev_sidebar_links->priv->page_cache,
 230                                         ev_sidebar_links->priv->page_changed_id);
 231                 g_signal_emit (ev_sidebar_links, signals[LINK_ACTIVATED], 0, link);
 232                 g_signal_handler_unblock (ev_sidebar_links->priv->page_cache,
 233                                           ev_sidebar_links->priv->page_changed_id);
 234
 235                 g_object_unref (link);
 236         }
 237 }
 238
 239 static GtkTreeModel *
 240 create_loading_model (void)
 241 {
 242         GtkTreeModel *retval;
 243         GtkTreeIter iter;
 244         gchar *markup;
 245
 246         /* Creates a fake model to indicate that we're loading */
 247         retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 248                                                      G_TYPE_STRING,
 249                                                      G_TYPE_OBJECT,
 250                                                      G_TYPE_BOOLEAN);
 251
 252         gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
 253         markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading..."));
 254         gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
 255                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup,
 256                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, FALSE,
 257                             EV_DOCUMENT_LINKS_COLUMN_LINK, NULL,
 258                             -1);
 259         g_free (markup);
 260
 261         return retval;
 262 }
 263
 264 static gint
 265 get_page_from_link (EvLink *link)
 266 {
 267         EvLinkAction *action;
 268         EvLinkDest *dest;
 269
 270         action = ev_link_get_action (link);
 271         if (!action)
 272                 return -1;
 273
 274         if (ev_link_action_get_action_type (action) !=
 275             EV_LINK_ACTION_TYPE_GOTO_DEST)
 276                 return -1;
 277
 278         dest = ev_link_action_get_dest (action);
 279         if (dest)
 280                 return ev_link_dest_get_page (dest);
 281
 282         return -1;
 283 }
 284
 285 static void
 286 print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar)
 287 {
 288         GtkWidget *window;
 289         GtkTreeSelection *selection;
 290         GtkTreeModel *model;
 291         GtkTreeIter iter;
 292
 293         selection = gtk_tree_view_get_selection
 294                 (GTK_TREE_VIEW (sidebar->priv->tree_view));
 295
 296         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 297                 EvLink *link;
 298                 int first_page, last_page = -1;
 299
 300                 gtk_tree_model_get (model, &iter,
 301                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 302                                     -1);
 303
 304                 if (!link)
 305                         return;
 306
 307                 first_page = get_page_from_link (link);
 308                 if (first_page == -1) {
 309                         g_object_unref (link);
 310                         return;
 311                 }
 312
 313                 first_page++;
 314                 g_object_unref (link);
 315
 316                 if (gtk_tree_model_iter_next (model, &iter)) {
 317                         gtk_tree_model_get (model, &iter,
 318                                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 319                                             -1);
 320
 321                         if (link) {
 322                                 last_page = get_page_from_link (link);
 323                                 g_object_unref (link);
 324                         }
 325                 } else {
 326                         last_page = ev_page_cache_get_n_pages (sidebar->priv->page_cache);
 327                 }
 328
 329                 if (last_page == -1)
 330                         last_page = ev_page_cache_get_n_pages (sidebar->priv->page_cache);
 331
 332                 window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar));
 333                 if (EV_IS_WINDOW (window)) {
 334 #ifdef WITH_PRINT
 335                         ev_window_print_range (EV_WINDOW (window),
 336                                                first_page, last_page);
 337 #endif
 338                 }
 339         }
 340 }
 341
 342 static GtkMenu *
 343 build_popup_menu (EvSidebarLinks *sidebar)
 344 {
 345         GtkWidget *menu;
 346         GtkWidget *item;
 347
 348         menu = gtk_menu_new ();
 349         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 350         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 351         gtk_widget_show (item);
 352         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 353         g_signal_connect (item, "activate",
 354                           G_CALLBACK (print_section_cb), sidebar);
 355
 356         return GTK_MENU (menu);
 357 }
 358
 359 static void
 360 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 361 {
 362         GtkMenu *menu = build_popup_menu (sidebar);
 363
 364         gtk_menu_popup (menu, NULL, NULL,
 365                         ev_gui_menu_position_tree_selection,
 366                         sidebar->priv->tree_view, 0,
 367                         gtk_get_current_event_time ());
 368         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 369 }
 370
 371 static gboolean
 372 button_press_cb (GtkWidget *treeview,
 373                  GdkEventButton *event,
 374                  EvSidebarLinks *sidebar)
 375 {
 376         GtkTreePath *path = NULL;
 377
 378         if (event->button == 3) {
 379                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 380                                                    event->x,
 381                                                    event->y,
 382                                                    &path,
 383                                                    NULL, NULL, NULL)) {
 384                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 385                                                   path, NULL, FALSE);
 386                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 387                                         NULL, NULL, NULL, event->button,
 388                                         gtk_get_current_event_time ());
 389                         gtk_tree_path_free (path);
 390
 391                         return TRUE;
 392                 }
 393         }
 394
 395         return FALSE;
 396 }
 397
 398
 399 static void
 400 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 401 {
 402         EvSidebarLinksPrivate *priv;
 403         GtkWidget *swindow;
 404         GtkTreeViewColumn *column;
 405         GtkCellRenderer *renderer;
 406         GtkTreeSelection *selection;
 407         GtkTreeModel *loading_model;
 408
 409         priv = ev_sidebar_links->priv;
 410
 411         swindow = gtk_scrolled_window_new (NULL, NULL);
 412
 413         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 414                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 415         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 416                                              GTK_SHADOW_IN);
 417
 418         /* Create tree view */
 419         loading_model = create_loading_model ();
 420         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 421         g_object_unref (loading_model);
 422
 423         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 424         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 425         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 426         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 427
 428         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 429         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 430
 431         column = gtk_tree_view_column_new ();
 432         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 433         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 434
 435         renderer = (GtkCellRenderer*)
 436                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 437                               "ellipsize", PANGO_ELLIPSIZE_END,
 438                               NULL);
 439         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 440         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 441                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 442                                              NULL);
 443
 444
 445         renderer = gtk_cell_renderer_text_new ();
 446         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 447         gtk_tree_view_column_set_cell_data_func (GTK_TREE_VIEW_COLUMN (column), renderer,
 448                                                  (GtkTreeCellDataFunc) links_page_num_func,
 449                                                  ev_sidebar_links, NULL);
 450
 451         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 452                           "button_press_event",
 453                           G_CALLBACK (button_press_cb),
 454                           ev_sidebar_links);
 455         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 456                           "popup_menu",
 457                           G_CALLBACK (popup_menu_cb),
 458                           ev_sidebar_links);
 459 }
 460
 461 static void
 462 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 463 {
 464         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 465
 466         ev_sidebar_links_construct (ev_sidebar_links);
 467 }
 468
 469 static void
 470 links_page_num_func (GtkTreeViewColumn *tree_column,
 471                      GtkCellRenderer   *cell,
 472                      GtkTreeModel      *tree_model,
 473                      GtkTreeIter       *iter,
 474                      EvSidebarLinks    *sidebar_links)
 475 {
 476         EvLink *link;
 477         gint page;
 478
 479         gtk_tree_model_get (tree_model, iter,
 480                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 481                             -1);
 482
 483         if (!link) {
 484                 g_object_set (cell,
 485                               "visible", FALSE,
 486                               NULL);
 487                 return;
 488         }
 489
 490         page = get_page_from_link (link);
 491
 492         if (page >= 0) {
 493                 gchar *page_label;
 494                 gchar *page_string;
 495
 496                 page_label = ev_page_cache_get_page_label (sidebar_links->priv->page_cache,
 497                                                            page);
 498                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 499
 500                 g_object_set (cell,
 501                               "markup", page_string,
 502                               "visible", TRUE,
 503                               NULL);
 504
 505                 g_free (page_label);
 506                 g_free (page_string);
 507         } else {
 508                 g_object_set (cell,
 509                               "visible", FALSE,
 510                               NULL);
 511         }
 512
 513         g_object_unref (link);
 514 }
 515
 516 /* Public Functions */
 517
 518 GtkWidget *
 519 ev_sidebar_links_new (void)
 520 {
 521         GtkWidget *ev_sidebar_links;
 522
 523         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 524
 525         return ev_sidebar_links;
 526 }
 527
 528 static gboolean
 529 update_page_callback_foreach (GtkTreeModel *model,
 530                               GtkTreePath  *path,
 531                               GtkTreeIter  *iter,
 532                               gpointer      data)
 533 {
 534         EvSidebarLinks *sidebar_links = (data);
 535         EvLink *link;
 536
 537         gtk_tree_model_get (model, iter,
 538                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 539                             -1);
 540
 541         if (link) {
 542                 int current_page;
 543                 int dest_page;
 544
 545                 dest_page = get_page_from_link (link);
 546                 g_object_unref (link);
 547
 548                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 549
 550                 if (dest_page == current_page) {
 551                         GtkTreeSelection *selection;
 552
 553                         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 554                         gtk_tree_view_expand_to_path (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 555                                                       path);
 556                         gtk_tree_selection_select_path (selection, path);
 557
 558                         return TRUE;
 559                 }
 560         }
 561
 562         return FALSE;
 563 }
 564
 565 static void
 566 update_page_callback (EvPageCache    *page_cache,
 567                       gint            current_page,
 568                       EvSidebarLinks *sidebar_links)
 569 {
 570         GtkTreeSelection *selection;
 571         GtkTreeModel *model;
 572         GtkTreeIter iter;
 573
 574         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 575
 576         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 577                 EvLink *link;
 578
 579                 gtk_tree_model_get (model, &iter,
 580                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 581                                     -1);
 582                 if (link) {
 583                         gint current_page;
 584                         gint dest_page;
 585
 586                         dest_page = get_page_from_link (link);
 587                         g_object_unref (link);
 588
 589                         current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 590                         if (dest_page == current_page)
 591                                 return;
 592                 }
 593         }
 594
 595         /* We go through the tree linearly looking for the first page that
 596          * matches.  This is pretty inefficient.  We can do something neat with
 597          * a GtkTreeModelSort here to make it faster, if it turns out to be
 598          * slow.
 599          */
 600         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 601         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 602
 603         gtk_tree_model_foreach (model,
 604                                 update_page_callback_foreach,
 605                                 sidebar_links);
 606
 607
 608         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 609         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 610 }
 611
 612 static void
 613 row_activated_callback                  (GtkTreeView *treeview,
 614                                          GtkTreePath *arg1,
 615                                          GtkTreeViewColumn *arg2,
 616                                          gpointer user_data)
 617 {
 618         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 619                     gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 620         } else {
 621                     gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 622         }
 623
 624         return;
 625 }
 626
 627 static void
 628 expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent)
 629 {
 630         GtkTreeIter iter;
 631         gboolean expand;
 632
 633         if (gtk_tree_model_iter_children (model, &iter, parent)) {
 634                 do {
 635                         gtk_tree_model_get (model, &iter,
 636                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand,
 637                                             -1);
 638                         if (expand) {
 639                                 GtkTreePath *path;
 640
 641                                 path = gtk_tree_model_get_path (model, &iter);
 642                                 gtk_tree_view_expand_row (tree_view, path, FALSE);
 643                                 gtk_tree_path_free (path);
 644                         }
 645
 646                         expand_open_links (tree_view, model, &iter);
 647                 } while (gtk_tree_model_iter_next (model, &iter));
 648         }
 649 }
 650
 651 static void
 652 job_finished_callback (EvJobLinks     *job,
 653                        EvSidebarLinks *sidebar_links)
 654 {
 655         EvSidebarLinksPrivate *priv;
 656         GtkTreeSelection *selection;
 657
 658         priv = sidebar_links->priv;
 659
 660         priv->model = job->model;
 661         g_object_notify (G_OBJECT (sidebar_links), "model");
 662
 663         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 664
 665         g_object_unref (job);
 666         priv->job = NULL;
 667
 668         expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL);
 669
 670         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 671         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 672         priv->selection_id = g_signal_connect (selection, "changed",
 673                                                G_CALLBACK (selection_changed_callback),
 674                                                sidebar_links);
 675         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 676                                                   G_CALLBACK (update_page_callback),
 677                                                   sidebar_links);
 678         priv->row_activated_id = g_signal_connect (G_OBJECT (priv->tree_view), "row-activated",
 679                                                     G_CALLBACK (row_activated_callback), sidebar_links);
 680         update_page_callback (priv->page_cache,
 681                               ev_page_cache_get_current_page (priv->page_cache),
 682                               sidebar_links);
 683
 684 }
 685
 686 static void
 687 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 688                                EvDocument     *document)
 689 {
 690         EvSidebarLinks *sidebar_links;
 691         EvSidebarLinksPrivate *priv;
 692
 693         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 694         g_return_if_fail (EV_IS_DOCUMENT (document));
 695
 696         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 697
 698         priv = sidebar_links->priv;
 699
 700         if (priv->document) {
 701                 gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 702                 g_object_unref (priv->document);
 703         }
 704
 705         priv->document = g_object_ref (document);
 706         priv->page_cache = ev_page_cache_get (document);
 707
 708         if (priv->job) {
 709                 g_signal_handlers_disconnect_by_func (priv->job,
 710                                                       job_finished_callback,
 711                                                       sidebar_links);
 712                 g_object_unref (priv->job);
 713         }
 714
 715         priv->job = ev_job_links_new (document);
 716         g_signal_connect (priv->job,
 717                           "finished",
 718                           G_CALLBACK (job_finished_callback),
 719                           sidebar_links);
 720         /* The priority doesn't matter for this job */
 721         ev_job_queue_add_job (priv->job, EV_JOB_PRIORITY_LOW);
 722 }
 723
 724 static gboolean
 725 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 726                                    EvDocument *document)
 727 {
 728         return (EV_IS_DOCUMENT_LINKS (document) &&
 729                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 730 }
 731
 732 static const gchar*
 733 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 734 {
 735     return _("Index");
 736 }
 737
 738 static void
 739 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 740 {
 741         iface->support_document = ev_sidebar_links_support_document;
 742         iface->set_document = ev_sidebar_links_set_document;
 743         iface->get_label = ev_sidebar_links_get_label;
 744 }
 745