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
  29 #include <glib/gi18n.h>
  30 #include <gtk/gtk.h>
  31
  32 #include "ev-document-links.h"
  33 #include "ev-job-scheduler.h"
  34 #include "ev-sidebar-links.h"
  35 #include "ev-sidebar-page.h"
  36 #include "ev-window.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 enum {
  59         LINK_ACTIVATED,
  60         N_SIGNALS
  61 };
  62
  63 static void update_page_callback                        (EvPageCache       *page_cache,
  64                                                          gint               current_page,
  65                                                          EvSidebarLinks    *sidebar_links);
  66 static void row_activated_callback                      (GtkTreeView *treeview,
  67                                                          GtkTreePath *arg1,
  68                                                          GtkTreeViewColumn *arg2,
  69                                                          gpointer user_data);
  70 static void job_finished_callback                       (EvJobLinks     *job,
  71                                                          EvSidebarLinks *sidebar_links);
  72 static void ev_sidebar_links_page_iface_init            (EvSidebarPageIface *iface);
  73 static void ev_sidebar_links_set_document               (EvSidebarPage  *sidebar_page,
  74                                                          EvDocument     *document);
  75 static gboolean ev_sidebar_links_support_document       (EvSidebarPage  *sidebar_page,
  76                                                          EvDocument     *document);
  77 static const gchar* ev_sidebar_links_get_label          (EvSidebarPage *sidebar_page);
  78
  79 static guint signals[N_SIGNALS];
  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_cancel (sidebar->priv->job);
 150                 g_object_unref (sidebar->priv->job);
 151                 sidebar->priv->job = NULL;
 152         }
 153
 154         if (sidebar->priv->model) {
 155                 g_object_unref (sidebar->priv->model);
 156                 sidebar->priv->model = NULL;
 157         }
 158
 159         if (sidebar->priv->document) {
 160                 g_object_unref (sidebar->priv->document);
 161                 sidebar->priv->document = NULL;
 162                 sidebar->priv->page_cache = NULL;
 163         }
 164
 165         G_OBJECT_CLASS (ev_sidebar_links_parent_class)->dispose (object);
 166 }
 167
 168 static void
 169 ev_sidebar_links_map (GtkWidget *widget)
 170 {
 171         EvSidebarLinks *links;
 172
 173         links = EV_SIDEBAR_LINKS (widget);
 174
 175         GTK_WIDGET_CLASS (ev_sidebar_links_parent_class)->map (widget);
 176
 177         if (links->priv->model) {
 178                 update_page_callback (links->priv->page_cache,
 179                                       ev_page_cache_get_current_page (links->priv->page_cache),
 180                                       links);
 181         }
 182 }
 183
 184 static void
 185 ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class)
 186 {
 187         GObjectClass   *g_object_class;
 188         GtkWidgetClass *widget_class;
 189
 190         g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class);
 191         widget_class = GTK_WIDGET_CLASS (ev_sidebar_links_class);
 192
 193         g_object_class->set_property = ev_sidebar_links_set_property;
 194         g_object_class->get_property = ev_sidebar_links_get_property;
 195         g_object_class->dispose = ev_sidebar_links_dispose;
 196
 197         widget_class->map = ev_sidebar_links_map;
 198
 199         signals[LINK_ACTIVATED] = g_signal_new ("link-activated",
 200                          G_TYPE_FROM_CLASS (g_object_class),
 201                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 202                          G_STRUCT_OFFSET (EvSidebarLinksClass, link_activated),
 203                          NULL, NULL,
 204                          g_cclosure_marshal_VOID__OBJECT,
 205                          G_TYPE_NONE, 1, G_TYPE_OBJECT);
 206
 207         g_object_class_install_property (g_object_class,
 208                                          PROP_MODEL,
 209                                          g_param_spec_object ("model",
 210                                                               "Model",
 211                                                               "Current Model",
 212                                                               GTK_TYPE_TREE_MODEL,
 213                                                               G_PARAM_READWRITE));
 214         g_object_class_override_property (g_object_class,
 215                                           PROP_WIDGET,
 216                                           "main-widget");
 217
 218         g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate));
 219 }
 220
 221 static void
 222 selection_changed_callback (GtkTreeSelection   *selection,
 223                             EvSidebarLinks     *ev_sidebar_links)
 224 {
 225         EvDocument *document;
 226         GtkTreeModel *model;
 227         GtkTreeIter iter;
 228
 229         document = EV_DOCUMENT (ev_sidebar_links->priv->document);
 230         g_return_if_fail (ev_sidebar_links->priv->document != NULL);
 231
 232         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 233                 EvLink *link;
 234
 235                 gtk_tree_model_get (model, &iter,
 236                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 237                                     -1);
 238
 239                 if (link == NULL)
 240                         return;
 241
 242                 g_signal_handler_block (ev_sidebar_links->priv->page_cache,
 243                                         ev_sidebar_links->priv->page_changed_id);
 244                 g_signal_emit (ev_sidebar_links, signals[LINK_ACTIVATED], 0, link);
 245                 g_signal_handler_unblock (ev_sidebar_links->priv->page_cache,
 246                                           ev_sidebar_links->priv->page_changed_id);
 247
 248                 g_object_unref (link);
 249         }
 250 }
 251
 252 static GtkTreeModel *
 253 create_loading_model (void)
 254 {
 255         GtkTreeModel *retval;
 256         GtkTreeIter iter;
 257         gchar *markup;
 258
 259         /* Creates a fake model to indicate that we're loading */
 260         retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 261                                                      G_TYPE_STRING,
 262                                                      G_TYPE_OBJECT,
 263                                                      G_TYPE_BOOLEAN,
 264                                                      G_TYPE_STRING);
 265
 266         gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
 267         markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading..."));
 268         gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
 269                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup,
 270                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, FALSE,
 271                             EV_DOCUMENT_LINKS_COLUMN_LINK, NULL,
 272                             -1);
 273         g_free (markup);
 274
 275         return retval;
 276 }
 277
 278 static void
 279 print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar)
 280 {
 281         GtkWidget *window;
 282         GtkTreeSelection *selection;
 283         GtkTreeModel *model;
 284         GtkTreeIter iter;
 285
 286         selection = gtk_tree_view_get_selection
 287                 (GTK_TREE_VIEW (sidebar->priv->tree_view));
 288
 289         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 290                 EvLink *link;
 291                 int first_page, last_page = -1;
 292
 293                 gtk_tree_model_get (model, &iter,
 294                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 295                                     -1);
 296
 297                 if (!link)
 298                         return;
 299
 300                 first_page = ev_link_get_page (link);
 301                 if (first_page == -1) {
 302                         g_object_unref (link);
 303                         return;
 304                 }
 305
 306                 first_page++;
 307                 g_object_unref (link);
 308
 309                 if (gtk_tree_model_iter_next (model, &iter)) {
 310                         gtk_tree_model_get (model, &iter,
 311                                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 312                                             -1);
 313
 314                         if (link) {
 315                                 last_page = ev_link_get_page (link);
 316                                 g_object_unref (link);
 317                         }
 318                 } else {
 319                         last_page = ev_document_get_n_pages (sidebar->priv->document);
 320                 }
 321
 322                 if (last_page == -1)
 323                         last_page = ev_document_get_n_pages (sidebar->priv->document);
 324
 325                 window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar));
 326                 if (EV_IS_WINDOW (window)) {
 327                         ev_window_print_range (EV_WINDOW (window), first_page, last_page);
 328                 }
 329         }
 330 }
 331
 332 static GtkMenu *
 333 build_popup_menu (EvSidebarLinks *sidebar)
 334 {
 335         GtkWidget *menu;
 336         GtkWidget *item;
 337
 338         menu = gtk_menu_new ();
 339         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 340         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 341         gtk_widget_show (item);
 342         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 343         g_signal_connect (item, "activate",
 344                           G_CALLBACK (print_section_cb), sidebar);
 345
 346         return GTK_MENU (menu);
 347 }
 348
 349 static void
 350 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 351 {
 352         GtkMenu *menu = build_popup_menu (sidebar);
 353
 354         gtk_menu_popup (menu, NULL, NULL,
 355                         ev_gui_menu_position_tree_selection,
 356                         sidebar->priv->tree_view, 0,
 357                         gtk_get_current_event_time ());
 358         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 359 }
 360
 361 static gboolean
 362 button_press_cb (GtkWidget *treeview,
 363                  GdkEventButton *event,
 364                  EvSidebarLinks *sidebar)
 365 {
 366         GtkTreePath *path = NULL;
 367
 368         if (event->button == 3) {
 369                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 370                                                    event->x,
 371                                                    event->y,
 372                                                    &path,
 373                                                    NULL, NULL, NULL)) {
 374                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 375                                                   path, NULL, FALSE);
 376                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 377                                         NULL, NULL, NULL, event->button,
 378                                         gtk_get_current_event_time ());
 379                         gtk_tree_path_free (path);
 380
 381                         return TRUE;
 382                 }
 383         }
 384
 385         return FALSE;
 386 }
 387
 388
 389 static void
 390 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 391 {
 392         EvSidebarLinksPrivate *priv;
 393         GtkWidget *swindow;
 394         GtkTreeViewColumn *column;
 395         GtkCellRenderer *renderer;
 396         GtkTreeSelection *selection;
 397         GtkTreeModel *loading_model;
 398
 399         priv = ev_sidebar_links->priv;
 400
 401         swindow = gtk_scrolled_window_new (NULL, NULL);
 402
 403         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 404                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 405         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 406                                              GTK_SHADOW_IN);
 407
 408         /* Create tree view */
 409         loading_model = create_loading_model ();
 410         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 411         g_object_unref (loading_model);
 412
 413         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 414         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 415         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 416         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 417
 418         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 419         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 420
 421         column = gtk_tree_view_column_new ();
 422         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 423         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 424
 425         renderer = (GtkCellRenderer*)
 426                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 427                               "ellipsize", PANGO_ELLIPSIZE_END,
 428                               NULL);
 429         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 430         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 431                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 432                                              NULL);
 433
 434
 435         renderer = gtk_cell_renderer_text_new ();
 436         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 437         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 438                                              "text", EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL,
 439                                              NULL);
 440         g_object_set (G_OBJECT (renderer), "style", PANGO_STYLE_ITALIC, NULL);
 441
 442         g_signal_connect (priv->tree_view,
 443                           "button_press_event",
 444                           G_CALLBACK (button_press_cb),
 445                           ev_sidebar_links);
 446         g_signal_connect (priv->tree_view,
 447                           "popup_menu",
 448                           G_CALLBACK (popup_menu_cb),
 449                           ev_sidebar_links);
 450 }
 451
 452 static void
 453 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 454 {
 455         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 456
 457         ev_sidebar_links_construct (ev_sidebar_links);
 458 }
 459
 460 static gboolean
 461 fill_page_labels (GtkTreeModel *tree_model,
 462                   GtkTreePath *path,
 463                   GtkTreeIter *iter,
 464                   EvSidebarLinks    *sidebar_links)
 465 {
 466         EvLink *link;
 467         gint page;
 468         gchar *page_label;
 469
 470         gtk_tree_model_get (tree_model, iter,
 471                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 472                             -1);
 473
 474         if (!link)
 475                 return FALSE;
 476
 477         page = ev_link_get_page (link);
 478
 479         if (page < 0)
 480                 return FALSE;
 481
 482         page_label = ev_document_get_page_label (sidebar_links->priv->document,
 483                                                  page);
 484         gtk_tree_store_set (GTK_TREE_STORE (tree_model), iter,
 485                             EV_DOCUMENT_LINKS_COLUMN_PAGE_LABEL, page_label,
 486                             -1);
 487
 488         g_free (page_label);
 489
 490         g_object_unref (link);
 491         return FALSE;
 492 }
 493
 494 /* Public Functions */
 495
 496 GtkWidget *
 497 ev_sidebar_links_new (void)
 498 {
 499         GtkWidget *ev_sidebar_links;
 500
 501         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 502
 503         return ev_sidebar_links;
 504 }
 505
 506 static gboolean
 507 update_page_callback_foreach (GtkTreeModel *model,
 508                               GtkTreePath  *path,
 509                               GtkTreeIter  *iter,
 510                               gpointer      data)
 511 {
 512         EvSidebarLinks *sidebar_links = (data);
 513         EvLink *link;
 514
 515         gtk_tree_model_get (model, iter,
 516                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 517                             -1);
 518
 519         if (link) {
 520                 int current_page;
 521                 int dest_page;
 522
 523                 dest_page = ev_link_get_page (link);
 524                 g_object_unref (link);
 525
 526                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 527
 528                 if (dest_page == current_page) {
 529                         gtk_tree_view_expand_to_path (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 530                                                       path);
 531                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 532                                                   path, NULL, FALSE);
 533
 534                         return TRUE;
 535                 }
 536         }
 537
 538         return FALSE;
 539 }
 540
 541 static void
 542 update_page_callback (EvPageCache    *page_cache,
 543                       gint            current_page,
 544                       EvSidebarLinks *sidebar_links)
 545 {
 546         GtkTreeSelection *selection;
 547         GtkTreeModel *model;
 548         GtkTreeIter iter;
 549
 550         /* Widget is not currently visible */
 551         if (!GTK_WIDGET_MAPPED (sidebar_links))
 552                 return;
 553
 554         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 555
 556         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 557                 EvLink *link;
 558
 559                 gtk_tree_model_get (model, &iter,
 560                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 561                                     -1);
 562                 if (link) {
 563                         gint dest_page;
 564
 565                         dest_page = ev_link_get_page (link);
 566                         g_object_unref (link);
 567
 568                         if (dest_page == current_page)
 569                                 return;
 570                 }
 571         }
 572
 573         /* We go through the tree linearly looking for the first page that
 574          * matches.  This is pretty inefficient.  We can do something neat with
 575          * a GtkTreeModelSort here to make it faster, if it turns out to be
 576          * slow.
 577          */
 578         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 579         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 580
 581         gtk_tree_model_foreach (model,
 582                                 update_page_callback_foreach,
 583                                 sidebar_links);
 584
 585         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 586         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 587 }
 588
 589 static void
 590 row_activated_callback (GtkTreeView       *treeview,
 591                         GtkTreePath       *arg1,
 592                         GtkTreeViewColumn *arg2,
 593                         gpointer           user_data)
 594 {
 595         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 596                 gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 597         } else {
 598                 gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 599         }
 600 }
 601
 602 static void
 603 expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent)
 604 {
 605         GtkTreeIter iter;
 606         gboolean expand;
 607
 608         if (gtk_tree_model_iter_children (model, &iter, parent)) {
 609                 do {
 610                         gtk_tree_model_get (model, &iter,
 611                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand,
 612                                             -1);
 613                         if (expand) {
 614                                 GtkTreePath *path;
 615
 616                                 path = gtk_tree_model_get_path (model, &iter);
 617                                 gtk_tree_view_expand_row (tree_view, path, FALSE);
 618                                 gtk_tree_path_free (path);
 619                         }
 620
 621                         expand_open_links (tree_view, model, &iter);
 622                 } while (gtk_tree_model_iter_next (model, &iter));
 623         }
 624 }
 625
 626 static void
 627 job_finished_callback (EvJobLinks     *job,
 628                        EvSidebarLinks *sidebar_links)
 629 {
 630         EvSidebarLinksPrivate *priv;
 631         GtkTreeSelection *selection;
 632
 633         priv = sidebar_links->priv;
 634
 635         priv->model = job->model;
 636         g_object_notify (G_OBJECT (sidebar_links), "model");
 637
 638         gtk_tree_model_foreach (priv->model, (GtkTreeModelForeachFunc)fill_page_labels, sidebar_links);
 639
 640         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 641
 642         g_object_unref (job);
 643         priv->job = NULL;
 644
 645         expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL);
 646
 647         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 648         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 649
 650         if (priv->selection_id <= 0) {
 651                 priv->selection_id =
 652                         g_signal_connect (selection, "changed",
 653                                           G_CALLBACK (selection_changed_callback),
 654                                           sidebar_links);
 655         }
 656         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 657                                                   G_CALLBACK (update_page_callback),
 658                                                   sidebar_links);
 659         if (priv->row_activated_id <= 0) {
 660                 priv->row_activated_id =
 661                         g_signal_connect (priv->tree_view, "row-activated",
 662                                           G_CALLBACK (row_activated_callback),
 663                                           sidebar_links);
 664         }
 665
 666         update_page_callback (priv->page_cache,
 667                               ev_page_cache_get_current_page (priv->page_cache),
 668                               sidebar_links);
 669 }
 670
 671 static void
 672 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 673                                EvDocument     *document)
 674 {
 675         EvSidebarLinks *sidebar_links;
 676         EvSidebarLinksPrivate *priv;
 677
 678         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 679         g_return_if_fail (EV_IS_DOCUMENT (document));
 680
 681         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 682
 683         priv = sidebar_links->priv;
 684
 685         if (priv->document) {
 686                 gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 687                 g_object_unref (priv->document);
 688         }
 689
 690         priv->document = g_object_ref (document);
 691         priv->page_cache = ev_page_cache_get (document);
 692
 693         if (priv->job) {
 694                 g_signal_handlers_disconnect_by_func (priv->job,
 695                                                       job_finished_callback,
 696                                                       sidebar_links);
 697                 g_object_unref (priv->job);
 698         }
 699
 700         priv->job = ev_job_links_new (document);
 701         g_signal_connect (priv->job,
 702                           "finished",
 703                           G_CALLBACK (job_finished_callback),
 704                           sidebar_links);
 705         /* The priority doesn't matter for this job */
 706         ev_job_scheduler_push_job (priv->job, EV_JOB_PRIORITY_NONE);
 707 }
 708
 709 static gboolean
 710 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 711                                    EvDocument *document)
 712 {
 713         return (EV_IS_DOCUMENT_LINKS (document) &&
 714                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 715 }
 716
 717 static const gchar*
 718 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 719 {
 720     return _("Index");
 721 }
 722
 723 static void
 724 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 725 {
 726         iface->support_document = ev_sidebar_links_support_document;
 727         iface->set_document = ev_sidebar_links_set_document;
 728         iface->get_label = ev_sidebar_links_get_label;
 729 }
 730