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         G_OBJECT_CLASS (ev_sidebar_links_parent_class)->dispose (object);
 170 }
 171
 172 static void
 173 ev_sidebar_links_map (GtkWidget *widget)
 174 {
 175         EvSidebarLinks *links;
 176
 177         links = EV_SIDEBAR_LINKS (widget);
 178
 179         GTK_WIDGET_CLASS (ev_sidebar_links_parent_class)->map (widget);
 180
 181         if (links->priv->model) {
 182                 update_page_callback (links->priv->page_cache,
 183                                       ev_page_cache_get_current_page (links->priv->page_cache),
 184                                       links);
 185         }
 186 }
 187
 188 static void
 189 ev_sidebar_links_class_init (EvSidebarLinksClass *ev_sidebar_links_class)
 190 {
 191         GObjectClass   *g_object_class;
 192         GtkWidgetClass *widget_class;
 193
 194         g_object_class = G_OBJECT_CLASS (ev_sidebar_links_class);
 195         widget_class = GTK_WIDGET_CLASS (ev_sidebar_links_class);
 196
 197         g_object_class->set_property = ev_sidebar_links_set_property;
 198         g_object_class->get_property = ev_sidebar_links_get_property;
 199         g_object_class->dispose = ev_sidebar_links_dispose;
 200
 201         widget_class->map = ev_sidebar_links_map;
 202
 203         signals[LINK_ACTIVATED] = g_signal_new ("link-activated",
 204                          G_TYPE_FROM_CLASS (g_object_class),
 205                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 206                          G_STRUCT_OFFSET (EvSidebarLinksClass, link_activated),
 207                          NULL, NULL,
 208                          g_cclosure_marshal_VOID__OBJECT,
 209                          G_TYPE_NONE, 1, G_TYPE_OBJECT);
 210
 211         g_object_class_install_property (g_object_class,
 212                                          PROP_MODEL,
 213                                          g_param_spec_object ("model",
 214                                                               "Model",
 215                                                               "Current Model",
 216                                                               GTK_TYPE_TREE_MODEL,
 217                                                               G_PARAM_READWRITE));
 218         g_object_class_override_property (g_object_class,
 219                                           PROP_WIDGET,
 220                                           "main-widget");
 221
 222         g_type_class_add_private (g_object_class, sizeof (EvSidebarLinksPrivate));
 223 }
 224
 225 static void
 226 selection_changed_callback (GtkTreeSelection   *selection,
 227                             EvSidebarLinks     *ev_sidebar_links)
 228 {
 229         EvDocument *document;
 230         GtkTreeModel *model;
 231         GtkTreeIter iter;
 232
 233         document = EV_DOCUMENT (ev_sidebar_links->priv->document);
 234         g_return_if_fail (ev_sidebar_links->priv->document != NULL);
 235
 236         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 237                 EvLink *link;
 238
 239                 gtk_tree_model_get (model, &iter,
 240                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 241                                     -1);
 242
 243                 if (link == NULL)
 244                         return;
 245
 246                 g_signal_handler_block (ev_sidebar_links->priv->page_cache,
 247                                         ev_sidebar_links->priv->page_changed_id);
 248                 g_signal_emit (ev_sidebar_links, signals[LINK_ACTIVATED], 0, link);
 249                 g_signal_handler_unblock (ev_sidebar_links->priv->page_cache,
 250                                           ev_sidebar_links->priv->page_changed_id);
 251
 252                 g_object_unref (link);
 253         }
 254 }
 255
 256 static GtkTreeModel *
 257 create_loading_model (void)
 258 {
 259         GtkTreeModel *retval;
 260         GtkTreeIter iter;
 261         gchar *markup;
 262
 263         /* Creates a fake model to indicate that we're loading */
 264         retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 265                                                      G_TYPE_STRING,
 266                                                      G_TYPE_OBJECT,
 267                                                      G_TYPE_BOOLEAN);
 268
 269         gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
 270         markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading..."));
 271         gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
 272                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, markup,
 273                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, FALSE,
 274                             EV_DOCUMENT_LINKS_COLUMN_LINK, NULL,
 275                             -1);
 276         g_free (markup);
 277
 278         return retval;
 279 }
 280
 281 static gint
 282 get_page_from_link (EvLink *link)
 283 {
 284         EvLinkAction *action;
 285         EvLinkDest *dest;
 286
 287         action = ev_link_get_action (link);
 288         if (!action)
 289                 return -1;
 290
 291         if (ev_link_action_get_action_type (action) !=
 292             EV_LINK_ACTION_TYPE_GOTO_DEST)
 293                 return -1;
 294
 295         dest = ev_link_action_get_dest (action);
 296         if (dest)
 297                 return ev_link_dest_get_page (dest);
 298
 299         return -1;
 300 }
 301
 302 static void
 303 print_section_cb (GtkWidget *menuitem, EvSidebarLinks *sidebar)
 304 {
 305         GtkWidget *window;
 306         GtkTreeSelection *selection;
 307         GtkTreeModel *model;
 308         GtkTreeIter iter;
 309
 310         selection = gtk_tree_view_get_selection
 311                 (GTK_TREE_VIEW (sidebar->priv->tree_view));
 312
 313         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 314                 EvLink *link;
 315                 int first_page, last_page = -1;
 316
 317                 gtk_tree_model_get (model, &iter,
 318                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 319                                     -1);
 320
 321                 if (!link)
 322                         return;
 323
 324                 first_page = get_page_from_link (link);
 325                 if (first_page == -1) {
 326                         g_object_unref (link);
 327                         return;
 328                 }
 329
 330                 first_page++;
 331                 g_object_unref (link);
 332
 333                 if (gtk_tree_model_iter_next (model, &iter)) {
 334                         gtk_tree_model_get (model, &iter,
 335                                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 336                                             -1);
 337
 338                         if (link) {
 339                                 last_page = get_page_from_link (link);
 340                                 g_object_unref (link);
 341                         }
 342                 } else {
 343                         last_page = ev_page_cache_get_n_pages (sidebar->priv->page_cache);
 344                 }
 345
 346                 if (last_page == -1)
 347                         last_page = ev_page_cache_get_n_pages (sidebar->priv->page_cache);
 348
 349                 window = gtk_widget_get_toplevel (GTK_WIDGET (sidebar));
 350                 if (EV_IS_WINDOW (window)) {
 351 #ifdef WITH_PRINT
 352                         ev_window_print_range (EV_WINDOW (window),
 353                                                first_page, last_page);
 354 #endif
 355                 }
 356         }
 357 }
 358
 359 static GtkMenu *
 360 build_popup_menu (EvSidebarLinks *sidebar)
 361 {
 362         GtkWidget *menu;
 363         GtkWidget *item;
 364
 365         menu = gtk_menu_new ();
 366         item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PRINT, NULL);
 367         gtk_label_set_label (GTK_LABEL (GTK_BIN (item)->child), _("Print..."));
 368         gtk_widget_show (item);
 369         gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 370         g_signal_connect (item, "activate",
 371                           G_CALLBACK (print_section_cb), sidebar);
 372
 373         return GTK_MENU (menu);
 374 }
 375
 376 static void
 377 popup_menu_cb (GtkWidget *treeview, EvSidebarLinks *sidebar)
 378 {
 379         GtkMenu *menu = build_popup_menu (sidebar);
 380
 381         gtk_menu_popup (menu, NULL, NULL,
 382                         ev_gui_menu_position_tree_selection,
 383                         sidebar->priv->tree_view, 0,
 384                         gtk_get_current_event_time ());
 385         gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
 386 }
 387
 388 static gboolean
 389 button_press_cb (GtkWidget *treeview,
 390                  GdkEventButton *event,
 391                  EvSidebarLinks *sidebar)
 392 {
 393         GtkTreePath *path = NULL;
 394
 395         if (event->button == 3) {
 396                 if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
 397                                                    event->x,
 398                                                    event->y,
 399                                                    &path,
 400                                                    NULL, NULL, NULL)) {
 401                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (treeview),
 402                                                   path, NULL, FALSE);
 403                         gtk_menu_popup (build_popup_menu (sidebar), NULL,
 404                                         NULL, NULL, NULL, event->button,
 405                                         gtk_get_current_event_time ());
 406                         gtk_tree_path_free (path);
 407
 408                         return TRUE;
 409                 }
 410         }
 411
 412         return FALSE;
 413 }
 414
 415
 416 static void
 417 ev_sidebar_links_construct (EvSidebarLinks *ev_sidebar_links)
 418 {
 419         EvSidebarLinksPrivate *priv;
 420         GtkWidget *swindow;
 421         GtkTreeViewColumn *column;
 422         GtkCellRenderer *renderer;
 423         GtkTreeSelection *selection;
 424         GtkTreeModel *loading_model;
 425
 426         priv = ev_sidebar_links->priv;
 427
 428         swindow = gtk_scrolled_window_new (NULL, NULL);
 429
 430         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 431                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 432         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 433                                              GTK_SHADOW_IN);
 434
 435         /* Create tree view */
 436         loading_model = create_loading_model ();
 437         priv->tree_view = gtk_tree_view_new_with_model (loading_model);
 438         g_object_unref (loading_model);
 439
 440         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 441         gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
 442         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 443         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 444
 445         gtk_box_pack_start (GTK_BOX (ev_sidebar_links), swindow, TRUE, TRUE, 0);
 446         gtk_widget_show_all (GTK_WIDGET (ev_sidebar_links));
 447
 448         column = gtk_tree_view_column_new ();
 449         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 450         gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view), column);
 451
 452         renderer = (GtkCellRenderer*)
 453                 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 454                               "ellipsize", PANGO_ELLIPSIZE_END,
 455                               NULL);
 456         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, TRUE);
 457         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 458                                              "markup", EV_DOCUMENT_LINKS_COLUMN_MARKUP,
 459                                              NULL);
 460
 461
 462         renderer = gtk_cell_renderer_text_new ();
 463         gtk_tree_view_column_pack_end (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 464         gtk_tree_view_column_set_cell_data_func (GTK_TREE_VIEW_COLUMN (column), renderer,
 465                                                  (GtkTreeCellDataFunc) links_page_num_func,
 466                                                  ev_sidebar_links, NULL);
 467
 468         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 469                           "button_press_event",
 470                           G_CALLBACK (button_press_cb),
 471                           ev_sidebar_links);
 472         g_signal_connect (GTK_TREE_VIEW (priv->tree_view),
 473                           "popup_menu",
 474                           G_CALLBACK (popup_menu_cb),
 475                           ev_sidebar_links);
 476 }
 477
 478 static void
 479 ev_sidebar_links_init (EvSidebarLinks *ev_sidebar_links)
 480 {
 481         ev_sidebar_links->priv = EV_SIDEBAR_LINKS_GET_PRIVATE (ev_sidebar_links);
 482
 483         ev_sidebar_links_construct (ev_sidebar_links);
 484 }
 485
 486 static void
 487 links_page_num_func (GtkTreeViewColumn *tree_column,
 488                      GtkCellRenderer   *cell,
 489                      GtkTreeModel      *tree_model,
 490                      GtkTreeIter       *iter,
 491                      EvSidebarLinks    *sidebar_links)
 492 {
 493         EvLink *link;
 494         gint page;
 495
 496         gtk_tree_model_get (tree_model, iter,
 497                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 498                             -1);
 499
 500         if (!link) {
 501                 g_object_set (cell,
 502                               "visible", FALSE,
 503                               NULL);
 504                 return;
 505         }
 506
 507         page = get_page_from_link (link);
 508
 509         if (page >= 0) {
 510                 gchar *page_label;
 511                 gchar *page_string;
 512
 513                 page_label = ev_page_cache_get_page_label (sidebar_links->priv->page_cache,
 514                                                            page);
 515                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 516
 517                 g_object_set (cell,
 518                               "markup", page_string,
 519                               "visible", TRUE,
 520                               NULL);
 521
 522                 g_free (page_label);
 523                 g_free (page_string);
 524         } else {
 525                 g_object_set (cell,
 526                               "visible", FALSE,
 527                               NULL);
 528         }
 529
 530         g_object_unref (link);
 531 }
 532
 533 /* Public Functions */
 534
 535 GtkWidget *
 536 ev_sidebar_links_new (void)
 537 {
 538         GtkWidget *ev_sidebar_links;
 539
 540         ev_sidebar_links = g_object_new (EV_TYPE_SIDEBAR_LINKS, NULL);
 541
 542         return ev_sidebar_links;
 543 }
 544
 545 static gboolean
 546 update_page_callback_foreach (GtkTreeModel *model,
 547                               GtkTreePath  *path,
 548                               GtkTreeIter  *iter,
 549                               gpointer      data)
 550 {
 551         EvSidebarLinks *sidebar_links = (data);
 552         EvLink *link;
 553
 554         gtk_tree_model_get (model, iter,
 555                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 556                             -1);
 557
 558         if (link) {
 559                 int current_page;
 560                 int dest_page;
 561
 562                 dest_page = get_page_from_link (link);
 563                 g_object_unref (link);
 564
 565                 current_page = ev_page_cache_get_current_page (sidebar_links->priv->page_cache);
 566
 567                 if (dest_page == current_page) {
 568                         gtk_tree_view_expand_to_path (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 569                                                       path);
 570                         gtk_tree_view_set_cursor (GTK_TREE_VIEW (sidebar_links->priv->tree_view),
 571                                                   path, NULL, FALSE);
 572
 573                         return TRUE;
 574                 }
 575         }
 576
 577         return FALSE;
 578 }
 579
 580 static void
 581 update_page_callback (EvPageCache    *page_cache,
 582                       gint            current_page,
 583                       EvSidebarLinks *sidebar_links)
 584 {
 585         GtkTreeSelection *selection;
 586         GtkTreeModel *model;
 587         GtkTreeIter iter;
 588
 589         /* Widget is not currently visible */
 590         if (!GTK_WIDGET_MAPPED (sidebar_links))
 591                 return;
 592
 593         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (sidebar_links->priv->tree_view));
 594
 595         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 596                 EvLink *link;
 597
 598                 gtk_tree_model_get (model, &iter,
 599                                     EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 600                                     -1);
 601                 if (link) {
 602                         gint dest_page;
 603
 604                         dest_page = get_page_from_link (link);
 605                         g_object_unref (link);
 606
 607                         if (dest_page == current_page)
 608                                 return;
 609                 }
 610         }
 611
 612         /* We go through the tree linearly looking for the first page that
 613          * matches.  This is pretty inefficient.  We can do something neat with
 614          * a GtkTreeModelSort here to make it faster, if it turns out to be
 615          * slow.
 616          */
 617         g_signal_handler_block (selection, sidebar_links->priv->selection_id);
 618         g_signal_handler_block (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 619
 620         gtk_tree_model_foreach (model,
 621                                 update_page_callback_foreach,
 622                                 sidebar_links);
 623
 624         g_signal_handler_unblock (selection, sidebar_links->priv->selection_id);
 625         g_signal_handler_unblock (sidebar_links->priv->tree_view, sidebar_links->priv->row_activated_id);
 626 }
 627
 628 static void
 629 row_activated_callback (GtkTreeView       *treeview,
 630                         GtkTreePath       *arg1,
 631                         GtkTreeViewColumn *arg2,
 632                         gpointer           user_data)
 633 {
 634         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (treeview), arg1)) {
 635                 gtk_tree_view_collapse_row (GTK_TREE_VIEW (treeview), arg1);
 636         } else {
 637                 gtk_tree_view_expand_row (GTK_TREE_VIEW (treeview), arg1, FALSE);
 638         }
 639 }
 640
 641 static void
 642 expand_open_links (GtkTreeView *tree_view, GtkTreeModel *model, GtkTreeIter *parent)
 643 {
 644         GtkTreeIter iter;
 645         gboolean expand;
 646
 647         if (gtk_tree_model_iter_children (model, &iter, parent)) {
 648                 do {
 649                         gtk_tree_model_get (model, &iter,
 650                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, &expand,
 651                                             -1);
 652                         if (expand) {
 653                                 GtkTreePath *path;
 654
 655                                 path = gtk_tree_model_get_path (model, &iter);
 656                                 gtk_tree_view_expand_row (tree_view, path, FALSE);
 657                                 gtk_tree_path_free (path);
 658                         }
 659
 660                         expand_open_links (tree_view, model, &iter);
 661                 } while (gtk_tree_model_iter_next (model, &iter));
 662         }
 663 }
 664
 665 static void
 666 job_finished_callback (EvJobLinks     *job,
 667                        EvSidebarLinks *sidebar_links)
 668 {
 669         EvSidebarLinksPrivate *priv;
 670         GtkTreeSelection *selection;
 671
 672         priv = sidebar_links->priv;
 673
 674         priv->model = job->model;
 675         g_object_notify (G_OBJECT (sidebar_links), "model");
 676
 677         gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
 678
 679         g_object_unref (job);
 680         priv->job = NULL;
 681
 682         expand_open_links (GTK_TREE_VIEW (priv->tree_view), priv->model, NULL);
 683
 684         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 685         gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 686         priv->selection_id = g_signal_connect (selection, "changed",
 687                                                G_CALLBACK (selection_changed_callback),
 688                                                sidebar_links);
 689         priv->page_changed_id = g_signal_connect (priv->page_cache, "page-changed",
 690                                                   G_CALLBACK (update_page_callback),
 691                                                   sidebar_links);
 692         priv->row_activated_id = g_signal_connect (G_OBJECT (priv->tree_view), "row-activated",
 693                                                     G_CALLBACK (row_activated_callback), sidebar_links);
 694         update_page_callback (priv->page_cache,
 695                               ev_page_cache_get_current_page (priv->page_cache),
 696                               sidebar_links);
 697
 698 }
 699
 700 static void
 701 ev_sidebar_links_set_document (EvSidebarPage  *sidebar_page,
 702                                EvDocument     *document)
 703 {
 704         EvSidebarLinks *sidebar_links;
 705         EvSidebarLinksPrivate *priv;
 706
 707         g_return_if_fail (EV_IS_SIDEBAR_PAGE (sidebar_page));
 708         g_return_if_fail (EV_IS_DOCUMENT (document));
 709
 710         sidebar_links = EV_SIDEBAR_LINKS (sidebar_page);
 711
 712         priv = sidebar_links->priv;
 713
 714         if (priv->document) {
 715                 gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
 716                 g_object_unref (priv->document);
 717         }
 718
 719         priv->document = g_object_ref (document);
 720         priv->page_cache = ev_page_cache_get (document);
 721
 722         if (priv->job) {
 723                 g_signal_handlers_disconnect_by_func (priv->job,
 724                                                       job_finished_callback,
 725                                                       sidebar_links);
 726                 g_object_unref (priv->job);
 727         }
 728
 729         priv->job = ev_job_links_new (document);
 730         g_signal_connect (priv->job,
 731                           "finished",
 732                           G_CALLBACK (job_finished_callback),
 733                           sidebar_links);
 734         /* The priority doesn't matter for this job */
 735         ev_job_queue_add_job (priv->job, EV_JOB_PRIORITY_LOW);
 736 }
 737
 738 static gboolean
 739 ev_sidebar_links_support_document (EvSidebarPage  *sidebar_page,
 740                                    EvDocument *document)
 741 {
 742         return (EV_IS_DOCUMENT_LINKS (document) &&
 743                     ev_document_links_has_document_links (EV_DOCUMENT_LINKS (document)));
 744 }
 745
 746 static const gchar*
 747 ev_sidebar_links_get_label (EvSidebarPage *sidebar_page)
 748 {
 749     return _("Index");
 750 }
 751
 752 static void
 753 ev_sidebar_links_page_iface_init (EvSidebarPageIface *iface)
 754 {
 755         iface->support_document = ev_sidebar_links_support_document;
 756         iface->set_document = ev_sidebar_links_set_document;
 757         iface->get_label = ev_sidebar_links_get_label;
 758 }
 759