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-scheduler.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_cancel (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                         ev_window_print_range (EV_WINDOW (window), first_page, last_page);
 327                 }
 328         }
 329 }
 330
 331 static GtkMenu *
 332 build_popup_menu (EvSidebarLinks *sidebar)
 333 {
 334         GtkWidget *menu;
 335         GtkWidget *item;
 336
 337         menu = gtk_menu_new ();
 338         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 339         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 340         gtk_widget_show (item);
 341         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 342         g_signal_connect (item, "activate",
 343                           G_CALLBACK (print_section_cb), sidebar);
 344
 345         return GTK_MENU (menu);
 346 }
 347
 348 static void
 349 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 350 {
 351         GtkMenu *menu = build_popup_menu (sidebar);
 352
 353         gtk_menu_popup (menu, NULL, NULL,
 354                         ev_gui_menu_position_tree_selection,
 355                         sidebar->priv->tree_view, 0,
 356                         gtk_get_current_event_time ());
 357         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 358 }
 359
 360 static gboolean
 361 button_press_cb (GtkWidget *treeview,
 362                  GdkEventButton *event,
 363                  EvSidebarLinks *sidebar)
 364 {
 365         GtkTreePath *path = NULL;
 366
 367         if (event->button == 3) {
 368                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 369                                                    event->x,
 370                                                    event->y,
 371                                                    &path,
 372                                                    NULL, NULL, NULL)) {
 373                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 374                                                   path, NULL, FALSE);
 375                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 376                                         NULL, NULL, NULL, event->button,
 377                                         gtk_get_current_event_time ());
 378                         gtk_tree_path_free (path);
 379
 380                         return TRUE;
 381                 }
 382         }
 383
 384         return FALSE;
 385 }
 386
 387
 388 static void
 389 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 390 {
 391         EvSidebarLinksPrivate *priv;
 392         GtkWidget *swindow;
 393         GtkTreeViewColumn *column;
 394         GtkCellRenderer *renderer;
 395         GtkTreeSelection *selection;
 396         GtkTreeModel *loading_model;
 397
 398         priv = ev_sidebar_links->priv;
 399
 400         swindow = gtk_scrolled_window_new (NULL, NULL);
 401
 402         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 403                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 404         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 405                                              GTK_SHADOW_IN);
 406
 407         /* Create tree view */
 408         loading_model = create_loading_model ();
 409         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 410         g_object_unref (loading_model);
 411
 412         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 413         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 414         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 415         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 416
 417         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 418         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 419
 420         column = gtk_tree_view_column_new ();
 421         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 422         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 423
 424         renderer = (GtkCellRenderer*)
 425                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 426                               "ellipsize", PANGO_ELLIPSIZE_END,
 427                               NULL);
 428         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 429         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 430                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 431                                              NULL);
 432
 433
 434         renderer = gtk_cell_renderer_text_new ();
 435         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 436         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 437                                              "text", EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL,
 438                                              NULL);
 439         g_object_set (G_OBJECT (renderer), "style", PANGO_STYLE_ITALIC, NULL);
 440
 441         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 442                           "button_press_event",
 443                           G_CALLBACK (button_press_cb),
 444                           ev_sidebar_links);
 445         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 446                           "popup_menu",
 447                           G_CALLBACK (popup_menu_cb),
 448                           ev_sidebar_links);
 449 }
 450
 451 static void
 452 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 453 {
 454         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 455
 456         ev_sidebar_links_construct (ev_sidebar_links);
 457 }
 458
 459 static gboolean
 460 fill_page_labels (GtkTreeModel *tree_model,
 461                   GtkTreePath *path,
 462                   GtkTreeIter *iter,
 463                   EvSidebarLinks    *sidebar_links)
 464 {
 465         EvLink *link;
 466         gint page;
 467         gchar *page_label;
 468
 469         gtk_tree_model_get (tree_model, iter,
 470                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 471                             -1);
 472
 473         if (!link)
 474                 return FALSE;
 475
 476         page = ev_link_get_page (link);
 477
 478         if (page < 0)
 479                 return FALSE;
 480
 481         page_label = ev_page_cache_get_page_label (sidebar_links->priv->page_cache,
 482                                                    page);
 483         gtk_tree_store_set (GTK_TREE_STORE (tree_model), iter,
 484                             EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL, page_label,
 485                             -1);
 486
 487         g_free (page_label);
 488
 489         g_object_unref (link);
 490         return FALSE;
 491 }
 492
 493 /* Public Functions */
 494
 495 GtkWidget *
 496 ev_sidebar_links_new (void)
 497 {
 498         GtkWidget *ev_sidebar_links;
 499
 500         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 501
 502         return ev_sidebar_links;
 503 }
 504
 505 static gboolean
 506 update_page_callback_foreach (GtkTreeModel *model,
 507                               GtkTreePath  *path,
 508                               GtkTreeIter  *iter,
 509                               gpointer      data)
 510 {
 511         EvSidebarLinks *sidebar_links = (data);
 512         EvLink *link;
 513
 514         gtk_tree_model_get (model, iter,
 515                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 516                             -1);
 517
 518         if (link) {
 519                 int current_page;
 520                 int dest_page;
 521
 522                 dest_page = ev_link_get_page (link);
 523                 g_object_unref (link);
 524
 525                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 526
 527                 if (dest_page == current_page) {
 528                         gtk_tree_view_expand_to_path (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 529                                                       path);
 530                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 531                                                   path, NULL, FALSE);
 532
 533                         return TRUE;
 534                 }
 535         }
 536
 537         return FALSE;
 538 }
 539
 540 static void
 541 update_page_callback (EvPageCache    *page_cache,
 542                       gint            current_page,
 543                       EvSidebarLinks *sidebar_links)
 544 {
 545         GtkTreeSelection *selection;
 546         GtkTreeModel *model;
 547         GtkTreeIter iter;
 548
 549         /* Widget is not currently visible */
 550         if (!GTK_WIDGET_MAPPED (sidebar_links))
 551                 return;
 552
 553         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 554
 555         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 556                 EvLink *link;
 557
 558                 gtk_tree_model_get (model, &iter,
 559                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 560                                     -1);
 561                 if (link) {
 562                         gint dest_page;
 563
 564                         dest_page = ev_link_get_page (link);
 565                         g_object_unref (link);
 566
 567                         if (dest_page == current_page)
 568                                 return;
 569                 }
 570         }
 571
 572         /* We go through the tree linearly looking for the first page that
 573          * matches.  This is pretty inefficient.  We can do something neat with
 574          * a GtkTreeModelSort here to make it faster, if it turns out to be
 575          * slow.
 576          */
 577         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 578         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 579
 580         gtk_tree_model_foreach (model,
 581                                 update_page_callback_foreach,
 582                                 sidebar_links);
 583
 584         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 585         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 586 }
 587
 588 static void
 589 row_activated_callback (GtkTreeView       *treeview,
 590                         GtkTreePath       *arg1,
 591                         GtkTreeViewColumn *arg2,
 592                         gpointer           user_data)
 593 {
 594         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 595                 gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 596         } else {
 597                 gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 598         }
 599 }
 600
 601 static void
 602 expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent)
 603 {
 604         GtkTreeIter iter;
 605         gboolean expand;
 606
 607         if (gtk_tree_model_iter_children (model, &iter, parent)) {
 608                 do {
 609                         gtk_tree_model_get (model, &iter,
 610                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand,
 611                                             -1);
 612                         if (expand) {
 613                                 GtkTreePath *path;
 614
 615                                 path = gtk_tree_model_get_path (model, &iter);
 616                                 gtk_tree_view_expand_row (tree_view, path, FALSE);
 617                                 gtk_tree_path_free (path);
 618                         }
 619
 620                         expand_open_links (tree_view, model, &iter);
 621                 } while (gtk_tree_model_iter_next (model, &iter));
 622         }
 623 }
 624
 625 static void
 626 job_finished_callback (EvJobLinks     *job,
 627                        EvSidebarLinks *sidebar_links)
 628 {
 629         EvSidebarLinksPrivate *priv;
 630         GtkTreeSelection *selection;
 631
 632         priv = sidebar_links->priv;
 633
 634         priv->model = job->model;
 635         g_object_notify (G_OBJECT (sidebar_links), "model");
 636
 637         gtk_tree_model_foreach (priv->model, (GtkTreeModelForeachFunc)fill_page_labels, sidebar_links);
 638
 639         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 640
 641         g_object_unref (job);
 642         priv->job = NULL;
 643
 644         expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL);
 645
 646         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 647         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 648
 649         if (priv->selection_id <= 0) {
 650                 priv->selection_id =
 651                         g_signal_connect (selection, "changed",
 652                                           G_CALLBACK (selection_changed_callback),
 653                                           sidebar_links);
 654         }
 655         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 656                                                   G_CALLBACK (update_page_callback),
 657                                                   sidebar_links);
 658         if (priv->row_activated_id <= 0) {
 659                 priv->row_activated_id =
 660                         g_signal_connect (G_OBJECT (priv->tree_view), "row-activated",
 661                                           G_CALLBACK (row_activated_callback),
 662                                           sidebar_links);
 663         }
 664
 665         update_page_callback (priv->page_cache,
 666                               ev_page_cache_get_current_page (priv->page_cache),
 667                               sidebar_links);
 668 }
 669
 670 static void
 671 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 672                                EvDocument     *document)
 673 {
 674         EvSidebarLinks *sidebar_links;
 675         EvSidebarLinksPrivate *priv;
 676
 677         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 678         g_return_if_fail (EV_IS_DOCUMENT (document));
 679
 680         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 681
 682         priv = sidebar_links->priv;
 683
 684         if (priv->document) {
 685                 gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 686                 g_object_unref (priv->document);
 687         }
 688
 689         priv->document = g_object_ref (document);
 690         priv->page_cache = ev_page_cache_get (document);
 691
 692         if (priv->job) {
 693                 g_signal_handlers_disconnect_by_func (priv->job,
 694                                                       job_finished_callback,
 695                                                       sidebar_links);
 696                 g_object_unref (priv->job);
 697         }
 698
 699         priv->job = ev_job_links_new (document);
 700         g_signal_connect (priv->job,
 701                           "finished",
 702                           G_CALLBACK (job_finished_callback),
 703                           sidebar_links);
 704         /* The priority doesn't matter for this job */
 705         ev_job_scheduler_push_job (priv->job, EV_JOB_PRIORITY_NONE);
 706 }
 707
 708 static gboolean
 709 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 710                                    EvDocument *document)
 711 {
 712         return (EV_IS_DOCUMENT_LINKS (document) &&
 713                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 714 }
 715
 716 static const gchar*
 717 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 718 {
 719     return _("Index");
 720 }
 721
 722 static void
 723 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 724 {
 725         iface->support_document = ev_sidebar_links_support_document;
 726         iface->set_document = ev_sidebar_links_set_document;
 727         iface->get_label = ev_sidebar_links_get_label;
 728 }
 729