src/gtk/prefswindow.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 Hiroyuki Yamamoto and the Claws Mail Team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <glib/gi18n.h>
  26 #include <string.h>
  27 #include <gtk/gtk.h>
  28 #include <gtk/gtktext.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "utils.h"
  32 #include "prefswindow.h"
  33 #include "gtkutils.h"
  34 #include "prefs_common.h"
  35
  36 enum {
  37         PREFS_PAGE_TITLE,               /* page title */
  38         PREFS_PAGE_DATA,                /* PrefsTreeNode data */
  39         PREFS_PAGE_DATA_AUTO_FREE,      /* auto free for PREFS_PAGE_DATA */
  40         PREFS_PAGE_WEIGHT,              /* weight */
  41         PREFS_PAGE_INDEX,               /* index in original page list */
  42         N_PREFS_PAGE_COLUMNS
  43 };
  44
  45 typedef struct _PrefsWindow PrefsWindow;
  46 typedef struct _PrefsTreeNode PrefsTreeNode;
  47
  48 struct _PrefsWindow
  49 {
  50         GtkWidget *window;
  51         GtkWidget *table1;
  52         GtkWidget *scrolledwindow1;
  53         GtkWidget *scrolledwindow2;
  54         GtkWidget *tree_view;
  55         GtkWidget *table2;
  56         GtkWidget *pagelabel;
  57         GtkWidget *labelframe;
  58         GtkWidget *frame;
  59         GtkWidget *notebook;
  60         GtkWidget *confirm_area;
  61         GtkWidget *ok_btn;
  62         GtkWidget *cancel_btn;
  63         GtkWidget *apply_btn;
  64         gint *save_width;
  65         gint *save_height;
  66
  67         GtkWidget *empty_page;
  68
  69         gpointer         data;
  70         GSList          *prefs_pages;
  71         GtkDestroyNotify func;
  72 };
  73
  74 struct _PrefsTreeNode
  75 {
  76         PrefsPage *page;
  77         gfloat     treeweight; /* GTK2: not used */
  78 };
  79
  80 static void prefs_size_allocate_cb(GtkWidget *widget,
  81                                                          GtkAllocation *allocation, gpointer *user_data);
  82 static GtkTreeStore *prefswindow_create_data_store      (void);
  83 static GtkWidget *prefswindow_tree_view_create          (PrefsWindow* prefswindow);
  84 static void prefs_filtering_create_tree_view_columns    (GtkWidget *tree_view);
  85 static gboolean prefswindow_row_selected                (GtkTreeSelection *selector,
  86                                                          GtkTreeModel *model,
  87                                                          GtkTreePath *path,
  88                                                          gboolean currently_selected,
  89                                                          gpointer data);
  90
  91 static void save_all_pages(GSList *prefs_pages)
  92 {
  93         GSList *cur;
  94
  95         for (cur = prefs_pages; cur != NULL; cur = g_slist_next(cur)) {
  96                 PrefsPage *page = (PrefsPage *) cur->data;
  97
  98                 if (page->page_open) {
  99                         page->save_page(page);
 100                 }
 101         }
 102 }
 103
 104 static gboolean query_can_close_all_pages(GSList *prefs_pages)
 105 {
 106         GSList *cur;
 107
 108         for (cur = prefs_pages; cur != NULL; cur = g_slist_next(cur)) {
 109                 PrefsPage *page = (PrefsPage *) cur->data;
 110
 111                 if (page->can_close)
 112                         if (!page->can_close(page))
 113                                 return FALSE;
 114         }
 115         return TRUE;
 116 }
 117
 118 static void close_all_pages(GSList *prefs_pages)
 119 {
 120         GSList *cur;
 121
 122         for (cur = prefs_pages; cur != NULL; cur = g_slist_next(cur)) {
 123                 PrefsPage *page = (PrefsPage *) cur->data;
 124
 125                 if (page->page_open) {
 126                         page->destroy_widget(page);
 127                         page->page_open = FALSE;
 128                 }
 129         }
 130 }
 131
 132 static void apply_button_clicked(GtkButton *button, gpointer user_data)
 133 {
 134         PrefsWindow *prefswindow = (PrefsWindow *) user_data;
 135
 136         save_all_pages(prefswindow->prefs_pages);
 137 }
 138
 139 static void close_prefs_window(PrefsWindow *prefswindow)
 140 {
 141         debug_print("prefs window closed\n");
 142
 143         close_all_pages(prefswindow->prefs_pages);
 144
 145         gtk_widget_destroy(prefswindow->window);
 146         g_slist_free(prefswindow->prefs_pages);
 147         if(prefswindow->func != NULL)
 148                 prefswindow->func(prefswindow->data);
 149         g_free(prefswindow);
 150 }
 151
 152 static void ok_button_clicked(GtkButton *button, gpointer user_data)
 153 {
 154         PrefsWindow *prefswindow = (PrefsWindow *) user_data;
 155
 156         if (query_can_close_all_pages(prefswindow->prefs_pages)) {
 157                 save_all_pages(prefswindow->prefs_pages);
 158                 close_prefs_window(prefswindow);
 159         }
 160 }
 161
 162 static void cancel_button_clicked(GtkButton *button, gpointer user_data)
 163 {
 164         PrefsWindow *prefswindow = (PrefsWindow *) user_data;
 165
 166         close_prefs_window(prefswindow);
 167 }
 168
 169 static gboolean window_closed(GtkWidget *widget, GdkEvent *event, gpointer user_data)
 170 {
 171         PrefsWindow *prefswindow = (PrefsWindow *) user_data;
 172
 173         close_prefs_window(prefswindow);
 174         return FALSE;
 175 }
 176
 177 static gboolean prefswindow_key_pressed(GtkWidget *widget, GdkEventKey *event,
 178                                     PrefsWindow *data)
 179 {
 180         GtkWidget *focused_child;
 181
 182         if (event) {
 183                 switch (event->keyval) {
 184                         case GDK_Escape :
 185                                 cancel_button_clicked(NULL, data);
 186                                 break;
 187                         case GDK_Return :
 188                         case GDK_KP_Enter :
 189                                 focused_child = gtkut_get_focused_child
 190                                         (GTK_CONTAINER(data->notebook));
 191                                 /* Press ok, if the focused child is not a text view
 192                                  * and text (anything that accepts return) (can pass
 193                                  * NULL to any of the GTK_xxx() casts) */
 194                                 if (!GTK_IS_TEXT_VIEW(focused_child))
 195                                         ok_button_clicked(NULL, data);
 196                                 break;
 197                         default:
 198                                 break;
 199                 }
 200         }
 201         return FALSE;
 202 }
 203
 204 typedef struct FindNodeByName {
 205         const gchar *name;
 206         gboolean     found;
 207         GtkTreeIter  node;
 208 } FindNodeByName;
 209
 210 static gboolean find_node_by_name(GtkTreeModel *model, GtkTreePath *path,
 211                                   GtkTreeIter *iter, FindNodeByName *data)
 212 {
 213         gchar *name;
 214         gboolean result = FALSE;
 215
 216         gtk_tree_model_get(model, iter, PREFS_PAGE_TITLE, &name, -1);
 217         if (name) {
 218                 result = strcmp(name, data->name) == 0;
 219                 if (result) {
 220                         data->found = TRUE;
 221                         data->node  = *iter;
 222                 }
 223                 g_free(name);
 224         }
 225
 226         return result;
 227 }
 228
 229 static gint prefswindow_tree_sort_by_weight(GtkTreeModel *model,
 230                                             GtkTreeIter  *a,
 231                                             GtkTreeIter  *b,
 232                                             gpointer      context)
 233 {
 234         gfloat f1, f2;
 235         gint i1, i2;
 236
 237         /* From observation sorting should keep in account the original
 238          * order in the prefs_pages list. I.e. if equal weight, prefer
 239          * the index in the pages list */
 240         gtk_tree_model_get(model, a,
 241                            PREFS_PAGE_INDEX,  &i1,
 242                            PREFS_PAGE_WEIGHT, &f1, -1);
 243         gtk_tree_model_get(model, b,
 244                            PREFS_PAGE_INDEX,  &i2,
 245                            PREFS_PAGE_WEIGHT, &f2, -1);
 246
 247         return f1 < f2 ? -1 : (f1 > f2 ?  1 :
 248               (i1 < i2 ?  1 : (i1 > i2 ? -1 : 0)));
 249 }
 250
 251 static void prefswindow_build_all_pages(PrefsWindow *prefswindow, GSList *prefs_pages)
 252 {
 253         GSList *cur;
 254
 255         prefs_pages = g_slist_reverse(prefs_pages);
 256         for (cur = prefs_pages; cur != NULL; cur = g_slist_next(cur)) {
 257                 PrefsPage *page = (PrefsPage *) cur->data;
 258
 259                 if (!page->page_open) {
 260                         page->create_widget(page, GTK_WINDOW(prefswindow->window), prefswindow->data);
 261                         gtk_container_add(GTK_CONTAINER(prefswindow->notebook), page->widget);
 262                         page->page_open = TRUE;
 263                 }
 264         }
 265         prefs_pages = g_slist_reverse(prefs_pages);
 266 }
 267
 268 static void prefswindow_build_tree(GtkWidget *tree_view, GSList *prefs_pages, PrefsWindow *prefswindow, gboolean preload_pages)
 269 {
 270         GtkTreeStore *store = GTK_TREE_STORE(gtk_tree_view_get_model
 271                         (GTK_TREE_VIEW(tree_view)));
 272         GSList *cur;
 273         gint index; /* index in pages list */
 274         GtkTreeSelection *selection;
 275         GtkTreeIter iter;
 276
 277         for (cur = prefs_pages, index = 0; cur != NULL; cur = g_slist_next(cur), index++) {
 278                 PrefsPage *page = (PrefsPage *)cur->data;
 279                 FindNodeByName find_name;
 280                 GtkTreeIter node, child;
 281                 PrefsTreeNode *prefs_node;
 282                 int i;
 283
 284                 /* each page tree component string */
 285                 for (i = 0; page->path[i] != NULL; i++) {
 286                         find_name.found = FALSE;
 287                         find_name.name  = page->path[i];
 288
 289                         /* find node to attach to
 290                          * FIXME: we search the entire tree, so this is suboptimal... */
 291                         gtk_tree_model_foreach(GTK_TREE_MODEL(store),
 292                                                (GtkTreeModelForeachFunc) find_node_by_name,
 293                                                &find_name);
 294                         if (find_name.found) {
 295                                 node = find_name.node;
 296                                 gtk_tree_model_get(GTK_TREE_MODEL(store), &node,
 297                                                    PREFS_PAGE_DATA, &prefs_node,
 298                                                    -1);
 299                         } else {
 300                                 GAuto *autoptr;
 301
 302                                 /* create a new top level */
 303                                 gtk_tree_store_append(store, &child, i == 0 ? NULL : &node);
 304                                 prefs_node = g_new0(PrefsTreeNode, 1);
 305                                 autoptr = g_auto_pointer_new(prefs_node);
 306                                 gtk_tree_store_set(store, &child,
 307                                                    PREFS_PAGE_TITLE, page->path[i],
 308                                                    PREFS_PAGE_DATA,  prefs_node,
 309                                                    PREFS_PAGE_DATA_AUTO_FREE, autoptr,
 310                                                    PREFS_PAGE_INDEX, index,
 311                                                    PREFS_PAGE_WEIGHT, 0.0f,
 312                                                    -1);
 313                                 g_auto_pointer_free(autoptr);
 314                                 node = child;
 315                         }
 316                 }
 317
 318                 /* right now we have a node and its prefs_node */
 319                 prefs_node->page = page;
 320
 321                 /* parents "inherit" the max weight of the children */
 322                 do {
 323                         gfloat f;
 324
 325                         gtk_tree_model_get(GTK_TREE_MODEL(store), &node,
 326                                            PREFS_PAGE_WEIGHT, &f,
 327                                            -1);
 328                         if (page->weight > f) {
 329                                 f = page->weight;
 330                                 gtk_tree_store_set(store, &node,
 331                                                    PREFS_PAGE_WEIGHT, f,
 332                                                    -1);
 333                         }
 334                         child = node;
 335                 } while (gtk_tree_model_iter_parent(GTK_TREE_MODEL(store),
 336                                                     &node, &child));
 337         }
 338
 339         gtk_tree_view_expand_all(GTK_TREE_VIEW(tree_view));
 340
 341         /* set sort func & sort */
 342         gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store),
 343                                         PREFS_PAGE_WEIGHT,
 344                                         prefswindow_tree_sort_by_weight,
 345                                         NULL, NULL);
 346         gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(store),
 347                                              PREFS_PAGE_WEIGHT,
 348                                              GTK_SORT_DESCENDING);
 349
 350         if (preload_pages)
 351                 prefswindow_build_all_pages(prefswindow, prefs_pages);
 352
 353         /* select first one */
 354         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 355         if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter))
 356                 gtk_tree_selection_select_iter(selection, &iter);
 357 }
 358
 359 void prefswindow_open_full(const gchar *title, GSList *prefs_pages, gpointer data, GtkDestroyNotify func,
 360                                                          gint *save_width, gint *save_height, gboolean preload_pages)
 361 {
 362         PrefsWindow *prefswindow;
 363         gint x = gdk_screen_width();
 364         gint y = gdk_screen_height();
 365         static GdkGeometry geometry;
 366
 367         prefswindow = g_new0(PrefsWindow, 1);
 368
 369         prefswindow->data = data;
 370         prefswindow->func = func;
 371         prefswindow->prefs_pages = g_slist_copy(prefs_pages);
 372         prefswindow->save_width = save_width;
 373         prefswindow->save_height = save_height;
 374
 375         prefswindow->window = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "prefswindow");
 376         gtk_window_set_title(GTK_WINDOW(prefswindow->window), title);
 377
 378         gtk_window_set_position (GTK_WINDOW(prefswindow->window), GTK_WIN_POS_CENTER);
 379         gtk_window_set_modal (GTK_WINDOW (prefswindow->window), TRUE);
 380         gtk_window_set_resizable (GTK_WINDOW(prefswindow->window), TRUE);
 381         gtk_container_set_border_width(GTK_CONTAINER(prefswindow->window), 4);
 382
 383         prefswindow->table1 = gtk_table_new(2, 2, FALSE);
 384         gtk_widget_show(prefswindow->table1);
 385         gtk_container_add(GTK_CONTAINER(prefswindow->window), prefswindow->table1);
 386
 387         prefswindow->scrolledwindow1 = gtk_scrolled_window_new(NULL, NULL);
 388         gtk_widget_show(prefswindow->scrolledwindow1);
 389         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(prefswindow->scrolledwindow1), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 390         gtk_table_attach(GTK_TABLE(prefswindow->table1), prefswindow->scrolledwindow1, 0, 1, 0, 1, GTK_FILL, GTK_FILL | GTK_EXPAND, 2, 2);
 391
 392         prefswindow->tree_view = prefswindow_tree_view_create(prefswindow);
 393         gtk_widget_show(prefswindow->tree_view);
 394         gtk_container_add(GTK_CONTAINER(prefswindow->scrolledwindow1),
 395                           prefswindow->tree_view);
 396
 397         prefswindow->frame = gtk_frame_new(NULL);
 398         gtk_widget_show(prefswindow->frame);
 399         gtk_frame_set_shadow_type(GTK_FRAME(prefswindow->frame), GTK_SHADOW_IN);
 400         gtk_table_attach(GTK_TABLE(prefswindow->table1), prefswindow->frame, 1, 2, 0, 1, GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 2, 2);
 401
 402         prefswindow->table2 = gtk_table_new(1, 2, FALSE);
 403         gtk_widget_show(prefswindow->table2);
 404         gtk_container_add(GTK_CONTAINER(prefswindow->frame), prefswindow->table2);
 405
 406         prefswindow->labelframe = gtk_frame_new(NULL);
 407         gtk_widget_show(prefswindow->labelframe);
 408         gtk_frame_set_shadow_type(GTK_FRAME(prefswindow->labelframe), GTK_SHADOW_OUT);
 409         gtk_table_attach(GTK_TABLE(prefswindow->table2), prefswindow->labelframe, 0, 1, 0, 1, GTK_FILL | GTK_EXPAND, GTK_FILL, 1, 1);
 410
 411         prefswindow->pagelabel = gtk_label_new("");
 412         gtk_widget_show(prefswindow->pagelabel);
 413         gtk_label_set_justify(GTK_LABEL(prefswindow->pagelabel), GTK_JUSTIFY_LEFT);
 414         gtk_misc_set_alignment(GTK_MISC(prefswindow->pagelabel), 0, 0.0);
 415         gtk_container_add(GTK_CONTAINER(prefswindow->labelframe), prefswindow->pagelabel);
 416
 417         prefswindow->scrolledwindow2 = gtk_scrolled_window_new(NULL, NULL);
 418         gtk_widget_show(prefswindow->scrolledwindow2);
 419         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(prefswindow->scrolledwindow2), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 420
 421         prefswindow->notebook = gtk_notebook_new();
 422         gtk_widget_show(prefswindow->notebook);
 423         gtk_notebook_set_scrollable(GTK_NOTEBOOK(prefswindow->notebook), TRUE);
 424         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(prefswindow->notebook), FALSE);
 425         gtk_notebook_set_show_border(GTK_NOTEBOOK(prefswindow->notebook), FALSE);
 426         gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(prefswindow->scrolledwindow2),
 427                                         prefswindow->notebook);
 428         gtk_table_attach(GTK_TABLE(prefswindow->table2), prefswindow->scrolledwindow2, 0, 1, 1, 2, GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 8, 8);
 429
 430         prefswindow->empty_page = gtk_label_new("");
 431         gtk_widget_show(prefswindow->empty_page);
 432         gtk_container_add(GTK_CONTAINER(prefswindow->notebook), prefswindow->empty_page);
 433
 434         prefswindow_build_tree(prefswindow->tree_view, prefs_pages, prefswindow, preload_pages);
 435
 436         gtk_widget_grab_focus(prefswindow->tree_view);
 437
 438         gtkut_stock_button_set_create(&prefswindow->confirm_area,
 439                                       &prefswindow->apply_btn,  GTK_STOCK_APPLY,
 440                                       &prefswindow->cancel_btn, GTK_STOCK_CANCEL,
 441                                       &prefswindow->ok_btn,     GTK_STOCK_OK);
 442
 443         gtk_widget_show_all(prefswindow->confirm_area);
 444
 445         gtk_table_attach(GTK_TABLE(prefswindow->table1), prefswindow->confirm_area, 0, 2, 1, 2, GTK_FILL | GTK_EXPAND, GTK_FILL, 2, 2);
 446
 447         g_signal_connect(G_OBJECT(prefswindow->ok_btn), "clicked",
 448                          G_CALLBACK(ok_button_clicked), prefswindow);
 449         g_signal_connect(G_OBJECT(prefswindow->cancel_btn), "clicked",
 450                          G_CALLBACK(cancel_button_clicked), prefswindow);
 451         g_signal_connect(G_OBJECT(prefswindow->apply_btn), "clicked",
 452                          G_CALLBACK(apply_button_clicked), prefswindow);
 453         g_signal_connect(G_OBJECT(prefswindow->window), "delete_event",
 454                          G_CALLBACK(window_closed), prefswindow);
 455
 456 #ifdef MAEMO
 457         maemo_connect_key_press_to_mainwindow(GTK_WINDOW(prefswindow->window));
 458 #else
 459         g_signal_connect(G_OBJECT(prefswindow->window), "key_press_event",
 460                            G_CALLBACK(prefswindow_key_pressed), &(prefswindow->window));
 461 #endif
 462
 463         /* connect to callback only if we hhave non-NULL pointers to store size to */
 464         if (prefswindow->save_width && prefswindow->save_height) {
 465                 g_signal_connect(G_OBJECT(prefswindow->window), "size_allocate",
 466                                  G_CALLBACK(prefs_size_allocate_cb), prefswindow);
 467         }
 468
 469         if (!geometry.min_height) {
 470
 471                 if (x < 800 && y < 600) {
 472                         geometry.min_width = 600;
 473                         geometry.min_height = 440;
 474                 } else {
 475                         geometry.min_width = 700;
 476                         geometry.min_height = 550;
 477                 }
 478         }
 479         gtk_window_set_geometry_hints(GTK_WINDOW(prefswindow->window), NULL, &geometry,
 480                                       GDK_HINT_MIN_SIZE);
 481         if (prefswindow->save_width && prefswindow->save_height) {
 482                 gtk_widget_set_size_request(prefswindow->window, *(prefswindow->save_width),
 483                                             *(prefswindow->save_height));
 484         }
 485
 486         gtk_widget_show(prefswindow->window);
 487 #ifdef MAEMO
 488         maemo_window_full_screen_if_needed(GTK_WINDOW(prefswindow->window));
 489 #endif
 490 }
 491
 492 void prefswindow_open(const gchar *title, GSList *prefs_pages, gpointer data,
 493                                          gint *save_width, gint *save_height)
 494 {
 495         prefswindow_open_full(title, prefs_pages, data, NULL, save_width, save_height, FALSE);
 496 }
 497
 498 /*!
 499  *\brief        Save Gtk object size to prefs dataset
 500  */
 501 static void prefs_size_allocate_cb(GtkWidget *widget,
 502                                          GtkAllocation *allocation, gpointer *user_data)
 503 {
 504         PrefsWindow *prefswindow = (PrefsWindow *) user_data;
 505
 506         g_return_if_fail(allocation != NULL);
 507
 508         /* don't try to save size to NULL pointers */
 509         if (prefswindow && prefswindow->save_width && prefswindow->save_height) {
 510                 *(prefswindow->save_width) = allocation->width;
 511                 *(prefswindow->save_height) = allocation->height;
 512         }
 513 }
 514
 515 static GtkTreeStore *prefswindow_create_data_store(void)
 516 {
 517         return gtk_tree_store_new(N_PREFS_PAGE_COLUMNS,
 518                                   G_TYPE_STRING,
 519                                   G_TYPE_POINTER,
 520                                   G_TYPE_AUTO_POINTER,
 521                                   G_TYPE_FLOAT,
 522                                   G_TYPE_INT,
 523                                   -1);
 524 }
 525
 526 static GtkWidget *prefswindow_tree_view_create(PrefsWindow *prefswindow)
 527 {
 528         GtkTreeView *tree_view;
 529         GtkTreeSelection *selector;
 530         GtkTreeModel *model;
 531
 532         model = GTK_TREE_MODEL(prefswindow_create_data_store());
 533         tree_view = GTK_TREE_VIEW(gtk_tree_view_new_with_model(model));
 534         g_object_unref(model);
 535         gtk_tree_view_set_rules_hint(tree_view, prefs_common.use_stripes_everywhere);
 536
 537         selector = gtk_tree_view_get_selection(tree_view);
 538         gtk_tree_selection_set_mode(selector, GTK_SELECTION_BROWSE);
 539         gtk_tree_selection_set_select_function(selector, prefswindow_row_selected,
 540                                                prefswindow, NULL);
 541
 542         /* create the columns */
 543         prefs_filtering_create_tree_view_columns(GTK_WIDGET(tree_view));
 544
 545         return GTK_WIDGET(tree_view);
 546 }
 547
 548 static void prefs_filtering_create_tree_view_columns(GtkWidget *tree_view)
 549 {
 550         GtkTreeViewColumn *column;
 551         GtkCellRenderer *renderer;
 552
 553         renderer = gtk_cell_renderer_text_new();
 554         column = gtk_tree_view_column_new_with_attributes
 555                 (_("Page Index"),
 556                  renderer,
 557                  "text", PREFS_PAGE_TITLE,
 558                  NULL);
 559         gtk_tree_view_append_column(GTK_TREE_VIEW(tree_view), column);
 560 }
 561
 562 static gboolean prefswindow_row_selected(GtkTreeSelection *selector,
 563                                          GtkTreeModel *model,
 564                                          GtkTreePath *path,
 565                                          gboolean currently_selected,
 566                                          gpointer data)
 567 {
 568         PrefsTreeNode *prefsnode;
 569         PrefsPage *page;
 570         PrefsWindow *prefswindow = (PrefsWindow *) data;
 571         gchar *labeltext;
 572         gint pagenum, i;
 573         GtkTreeIter iter;
 574         GtkAdjustment *adj;
 575
 576         if (currently_selected)
 577                 return TRUE;
 578
 579         if (!gtk_tree_model_get_iter(GTK_TREE_MODEL(model), &iter, path))
 580                 return TRUE;
 581
 582         gtk_tree_model_get(model, &iter, PREFS_PAGE_DATA, &prefsnode, -1);
 583         page = prefsnode->page;
 584
 585         debug_print("%f\n", prefsnode->treeweight);
 586
 587         if (page == NULL) {
 588                 gtk_label_set_text(GTK_LABEL(prefswindow->pagelabel), "");
 589                 pagenum = gtk_notebook_page_num(GTK_NOTEBOOK(prefswindow->notebook),
 590                                                 prefswindow->empty_page);
 591                 gtk_notebook_set_current_page(GTK_NOTEBOOK(prefswindow->notebook),
 592                                               pagenum);
 593                 return TRUE;
 594         }
 595
 596         if (!page->page_open) {
 597                 page->create_widget(page, GTK_WINDOW(prefswindow->window), prefswindow->data);
 598                 gtk_container_add(GTK_CONTAINER(prefswindow->notebook), page->widget);
 599                 page->page_open = TRUE;
 600         }
 601
 602         i = 0;
 603         while (page->path[i + 1] != 0)
 604                 i++;
 605         labeltext = page->path[i];
 606
 607         gtk_label_set_text(GTK_LABEL(prefswindow->pagelabel), labeltext);
 608
 609         pagenum = gtk_notebook_page_num(GTK_NOTEBOOK(prefswindow->notebook),
 610                                         page->widget);
 611         gtk_notebook_set_current_page(GTK_NOTEBOOK(prefswindow->notebook),
 612                                       pagenum);
 613
 614         adj = gtk_scrolled_window_get_vadjustment(
 615                         GTK_SCROLLED_WINDOW(prefswindow->scrolledwindow2));
 616         gtk_adjustment_set_value(adj, 0);
 617
 618         return TRUE;
 619 }
 620