Pileus Git - ~andy/gtk/blob - gtk/gtkfilechooserentry.c

   1 /* GTK - The GIMP Toolkit
   2  * gtkfilechooserentry.c: Entry with filename completion
   3  * Copyright (C) 2003, Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library 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 GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <config.h>
  22 #include <string.h>
  23
  24 #include "gtkcelllayout.h"
  25 #include "gtkcellrenderertext.h"
  26 #include "gtkentry.h"
  27 #include "gtkfilechooserentry.h"
  28 #include "gtkmain.h"
  29 #include "gtkintl.h"
  30 #include "gtkalias.h"
  31
  32 typedef struct _GtkFileChooserEntryClass GtkFileChooserEntryClass;
  33
  34 #define GTK_FILE_CHOOSER_ENTRY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
  35 #define GTK_IS_FILE_CHOOSER_ENTRY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY))
  36 #define GTK_FILE_CHOOSER_ENTRY_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
  37
  38 struct _GtkFileChooserEntryClass
  39 {
  40   GtkEntryClass parent_class;
  41 };
  42
  43 /* Action to take when the current folder finishes loading (for explicit or automatic completion) */
  44 typedef enum {
  45   LOAD_COMPLETE_NOTHING,
  46   LOAD_COMPLETE_AUTOCOMPLETE,
  47   LOAD_COMPLETE_INSERT_PREFIX
  48 } LoadCompleteAction;
  49
  50 struct _GtkFileChooserEntry
  51 {
  52   GtkEntry parent_instance;
  53
  54   GtkFileChooserAction action;
  55
  56   GtkFileSystem *file_system;
  57   GtkFilePath *base_folder;
  58   gchar *file_part;
  59   gint file_part_pos;
  60   guint check_completion_idle;
  61
  62   /* Folder being loaded or already loaded */
  63   GtkFilePath *current_folder_path;
  64   GtkFileFolder *current_folder;
  65   GtkFileSystemHandle *load_folder_handle;
  66
  67   LoadCompleteAction load_complete_action;
  68
  69   GtkListStore *completion_store;
  70
  71   guint start_autocompletion_idle_id;
  72
  73   guint has_completion : 1;
  74   guint in_change      : 1;
  75   guint eat_tabs       : 1;
  76 };
  77
  78 enum
  79 {
  80   DISPLAY_NAME_COLUMN,
  81   PATH_COLUMN,
  82   N_COLUMNS
  83 };
  84
  85 static void     gtk_file_chooser_entry_iface_init     (GtkEditableClass *iface);
  86
  87 static void     gtk_file_chooser_entry_finalize       (GObject          *object);
  88 static void     gtk_file_chooser_entry_dispose        (GObject          *object);
  89 static void     gtk_file_chooser_entry_grab_focus     (GtkWidget        *widget);
  90 static gboolean gtk_file_chooser_entry_focus          (GtkWidget        *widget,
  91                                                        GtkDirectionType  direction);
  92 static void     gtk_file_chooser_entry_activate       (GtkEntry         *entry);
  93 static void     gtk_file_chooser_entry_changed        (GtkEditable      *editable);
  94 static void     gtk_file_chooser_entry_do_insert_text (GtkEditable *editable,
  95                                                        const gchar *new_text,
  96                                                        gint         new_text_length,
  97                                                        gint        *position);
  98
  99 static void     clear_completion_callback (GtkFileChooserEntry *chooser_entry,
 100                                            GParamSpec          *pspec);
 101
 102 #ifdef G_OS_WIN32
 103 static gint     insert_text_callback      (GtkFileChooserEntry *widget,
 104                                            const gchar         *new_text,
 105                                            gint                 new_text_length,
 106                                            gint                *position,
 107                                            gpointer             user_data);
 108 static void     delete_text_callback      (GtkFileChooserEntry *widget,
 109                                            gint                 start_pos,
 110                                            gint                 end_pos,
 111                                            gpointer             user_data);
 112 #endif
 113
 114 static gboolean match_selected_callback   (GtkEntryCompletion  *completion,
 115                                            GtkTreeModel        *model,
 116                                            GtkTreeIter         *iter,
 117                                            GtkFileChooserEntry *chooser_entry);
 118 static gboolean completion_match_func     (GtkEntryCompletion  *comp,
 119                                            const char          *key,
 120                                            GtkTreeIter         *iter,
 121                                            gpointer             data);
 122 static void     files_added_cb            (GtkFileSystem       *file_system,
 123                                            GSList              *added_uris,
 124                                            GtkFileChooserEntry *chooser_entry);
 125 static void     files_deleted_cb          (GtkFileSystem       *file_system,
 126                                            GSList              *deleted_uris,
 127                                            GtkFileChooserEntry *chooser_entry);
 128 static char    *maybe_append_separator_to_path (GtkFileChooserEntry *chooser_entry,
 129                                                 GtkFilePath         *path,
 130                                                 gchar               *display_name);
 131
 132 static GtkEditableClass *parent_editable_iface;
 133
 134 G_DEFINE_TYPE_WITH_CODE (GtkFileChooserEntry, _gtk_file_chooser_entry, GTK_TYPE_ENTRY,
 135                          G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
 136                                                 gtk_file_chooser_entry_iface_init))
 137
 138 static void
 139 _gtk_file_chooser_entry_class_init (GtkFileChooserEntryClass *class)
 140 {
 141   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 142   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 143   GtkEntryClass *entry_class = GTK_ENTRY_CLASS (class);
 144
 145   gobject_class->finalize = gtk_file_chooser_entry_finalize;
 146   gobject_class->dispose = gtk_file_chooser_entry_dispose;
 147
 148   widget_class->grab_focus = gtk_file_chooser_entry_grab_focus;
 149   widget_class->focus = gtk_file_chooser_entry_focus;
 150
 151   entry_class->activate = gtk_file_chooser_entry_activate;
 152 }
 153
 154 static void
 155 gtk_file_chooser_entry_iface_init (GtkEditableClass *iface)
 156 {
 157   parent_editable_iface = g_type_interface_peek_parent (iface);
 158
 159   iface->do_insert_text = gtk_file_chooser_entry_do_insert_text;
 160   iface->changed = gtk_file_chooser_entry_changed;
 161 }
 162
 163 static void
 164 _gtk_file_chooser_entry_init (GtkFileChooserEntry *chooser_entry)
 165 {
 166   GtkEntryCompletion *comp;
 167   GtkCellRenderer *cell;
 168
 169   g_object_set (chooser_entry, "truncate-multiline", TRUE, NULL);
 170
 171   comp = gtk_entry_completion_new ();
 172   gtk_entry_completion_set_popup_single_match (comp, FALSE);
 173
 174   gtk_entry_completion_set_match_func (comp,
 175                                        completion_match_func,
 176                                        chooser_entry,
 177                                        NULL);
 178
 179   cell = gtk_cell_renderer_text_new ();
 180   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (comp),
 181                               cell, TRUE);
 182   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (comp),
 183                                  cell,
 184                                  "text", 0);
 185
 186   g_signal_connect (comp, "match_selected",
 187                     G_CALLBACK (match_selected_callback), chooser_entry);
 188
 189   gtk_entry_set_completion (GTK_ENTRY (chooser_entry), comp);
 190   g_object_unref (comp);
 191
 192   g_signal_connect (chooser_entry, "notify::cursor-position",
 193                     G_CALLBACK (clear_completion_callback), NULL);
 194   g_signal_connect (chooser_entry, "notify::selection-bound",
 195                     G_CALLBACK (clear_completion_callback), NULL);
 196
 197 #ifdef G_OS_WIN32
 198   g_signal_connect (chooser_entry, "insert_text",
 199                     G_CALLBACK (insert_text_callback), NULL);
 200   g_signal_connect (chooser_entry, "delete_text",
 201                     G_CALLBACK (delete_text_callback), NULL);
 202 #endif
 203 }
 204
 205 static void
 206 gtk_file_chooser_entry_finalize (GObject *object)
 207 {
 208   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 209
 210   gtk_file_path_free (chooser_entry->base_folder);
 211   gtk_file_path_free (chooser_entry->current_folder_path);
 212   g_free (chooser_entry->file_part);
 213
 214   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->finalize (object);
 215 }
 216
 217 static void
 218 gtk_file_chooser_entry_dispose (GObject *object)
 219 {
 220   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 221
 222   if (chooser_entry->start_autocompletion_idle_id != 0)
 223     {
 224       g_source_remove (chooser_entry->start_autocompletion_idle_id);
 225       chooser_entry->start_autocompletion_idle_id = 0;
 226     }
 227
 228   if (chooser_entry->completion_store)
 229     {
 230       g_object_unref (chooser_entry->completion_store);
 231       chooser_entry->completion_store = NULL;
 232     }
 233
 234   if (chooser_entry->load_folder_handle)
 235     {
 236       gtk_file_system_cancel_operation (chooser_entry->load_folder_handle);
 237       chooser_entry->load_folder_handle = NULL;
 238     }
 239
 240   if (chooser_entry->current_folder)
 241     {
 242       g_signal_handlers_disconnect_by_func (chooser_entry->current_folder,
 243                                             G_CALLBACK (files_added_cb), chooser_entry);
 244       g_signal_handlers_disconnect_by_func (chooser_entry->current_folder,
 245                                             G_CALLBACK (files_deleted_cb), chooser_entry);
 246       g_object_unref (chooser_entry->current_folder);
 247       chooser_entry->current_folder = NULL;
 248     }
 249
 250   if (chooser_entry->file_system)
 251     {
 252       g_object_unref (chooser_entry->file_system);
 253       chooser_entry->file_system = NULL;
 254     }
 255
 256   if (chooser_entry->check_completion_idle)
 257     {
 258       g_source_remove (chooser_entry->check_completion_idle);
 259       chooser_entry->check_completion_idle = 0;
 260     }
 261
 262   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispose (object);
 263 }
 264
 265 /* Match functions for the GtkEntryCompletion */
 266 static gboolean
 267 match_selected_callback (GtkEntryCompletion  *completion,
 268                          GtkTreeModel        *model,
 269                          GtkTreeIter         *iter,
 270                          GtkFileChooserEntry *chooser_entry)
 271 {
 272   char *display_name;
 273   GtkFilePath *path;
 274   gint pos;
 275
 276   gtk_tree_model_get (model, iter,
 277                       DISPLAY_NAME_COLUMN, &display_name,
 278                       PATH_COLUMN, &path,
 279                       -1);
 280
 281   if (!display_name || !path)
 282     {
 283       /* these shouldn't complain if passed NULL */
 284       gtk_file_path_free (path);
 285       g_free (display_name);
 286       return FALSE;
 287     }
 288
 289   display_name = maybe_append_separator_to_path (chooser_entry, path, display_name);
 290
 291   pos = chooser_entry->file_part_pos;
 292
 293   /* We don't set in_change here as we want to update the current_folder
 294    * variable */
 295   gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
 296                             pos, -1);
 297   gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
 298                             display_name, -1,
 299                             &pos);
 300   gtk_editable_set_position (GTK_EDITABLE (chooser_entry), -1);
 301
 302   gtk_file_path_free (path);
 303   g_free (display_name);
 304
 305   return TRUE;
 306 }
 307
 308 /* Match function for the GtkEntryCompletion */
 309 static gboolean
 310 completion_match_func (GtkEntryCompletion *comp,
 311                        const char         *key_unused,
 312                        GtkTreeIter        *iter,
 313                        gpointer            data)
 314 {
 315   GtkFileChooserEntry *chooser_entry;
 316   char *name;
 317   gboolean result;
 318   char *norm_file_part;
 319   char *norm_name;
 320
 321   chooser_entry = GTK_FILE_CHOOSER_ENTRY (data);
 322
 323   /* We ignore the key because it is the contents of the entry.  Instead, we
 324    * just use our precomputed file_part.
 325    */
 326   if (!chooser_entry->file_part)
 327     {
 328       return FALSE;
 329     }
 330
 331   gtk_tree_model_get (GTK_TREE_MODEL (chooser_entry->completion_store), iter, DISPLAY_NAME_COLUMN, &name, -1);
 332   if (!name)
 333     {
 334       return FALSE; /* Uninitialized row, ugh */
 335     }
 336
 337   /* If we have an empty file_part, then we're at the root of a directory.  In
 338    * that case, we want to match all non-dot files.  We might want to match
 339    * dot_files too if show_hidden is TRUE on the fileselector in the future.
 340    */
 341   /* Additionally, support for gnome .hidden files would be sweet, too */
 342   if (chooser_entry->file_part[0] == '\000')
 343     {
 344       if (name[0] == '.')
 345         result = FALSE;
 346       else
 347         result = TRUE;
 348       g_free (name);
 349
 350       return result;
 351     }
 352
 353
 354   norm_file_part = g_utf8_normalize (chooser_entry->file_part, -1, G_NORMALIZE_ALL);
 355   norm_name = g_utf8_normalize (name, -1, G_NORMALIZE_ALL);
 356
 357 #ifdef G_PLATFORM_WIN32
 358   {
 359     gchar *temp;
 360
 361     temp = norm_file_part;
 362     norm_file_part = g_utf8_casefold (norm_file_part, -1);
 363     g_free (temp);
 364
 365     temp = norm_name;
 366     norm_name = g_utf8_casefold (norm_name, -1);
 367     g_free (temp);
 368   }
 369 #endif
 370
 371   result = (strncmp (norm_file_part, norm_name, strlen (norm_file_part)) == 0);
 372
 373   g_free (norm_file_part);
 374   g_free (norm_name);
 375   g_free (name);
 376
 377   return result;
 378 }
 379
 380 /* This function will append a directory separator to paths to
 381  * display_name iff the path associated with it is a directory.
 382  * maybe_append_separator_to_path will g_free the display_name and
 383  * return a new one if needed.  Otherwise, it will return the old one.
 384  * You should be safe calling
 385  *
 386  * display_name = maybe_append_separator_to_path (entry, path, display_name);
 387  * ...
 388  * g_free (display_name);
 389  */
 390 static char *
 391 maybe_append_separator_to_path (GtkFileChooserEntry *chooser_entry,
 392                                 GtkFilePath         *path,
 393                                 gchar               *display_name)
 394 {
 395   if (!g_str_has_suffix (display_name, G_DIR_SEPARATOR_S) && path)
 396     {
 397       GtkFileInfo *info;
 398
 399       info = gtk_file_folder_get_info (chooser_entry->current_folder,
 400                                        path, NULL); /* NULL-GError */
 401
 402       if (info)
 403         {
 404           if (gtk_file_info_get_is_folder (info))
 405             {
 406               gchar *tmp = display_name;
 407               display_name = g_strconcat (tmp, G_DIR_SEPARATOR_S, NULL);
 408               g_free (tmp);
 409             }
 410
 411           gtk_file_info_free (info);
 412         }
 413     }
 414
 415   return display_name;
 416 }
 417
 418 /* Determines if the completion model has entries with a common prefix relative
 419  * to the current contents of the entry.  Also, if there's one and only one such
 420  * path, stores it in unique_path_ret.
 421  */
 422 static void
 423 find_common_prefix (GtkFileChooserEntry *chooser_entry,
 424                     gchar               **common_prefix_ret,
 425                     GtkFilePath         **unique_path_ret)
 426 {
 427   GtkEditable *editable;
 428   GtkTreeIter iter;
 429   gboolean parsed;
 430   gboolean valid;
 431   char *text_up_to_cursor;
 432   GtkFilePath *parsed_folder_path;
 433   char *parsed_file_part;
 434
 435   *common_prefix_ret = NULL;
 436   *unique_path_ret = NULL;
 437
 438   if (chooser_entry->completion_store == NULL)
 439     return;
 440
 441   editable = GTK_EDITABLE (chooser_entry);
 442
 443   text_up_to_cursor = gtk_editable_get_chars (editable, 0, gtk_editable_get_position (editable));
 444
 445   parsed = gtk_file_system_parse (chooser_entry->file_system,
 446                                   chooser_entry->base_folder,
 447                                   text_up_to_cursor,
 448                                   &parsed_folder_path,
 449                                   &parsed_file_part,
 450                                   NULL); /* NULL-GError */
 451
 452   g_free (text_up_to_cursor);
 453
 454   if (!parsed)
 455     return;
 456
 457   valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (chooser_entry->completion_store), &iter);
 458
 459   while (valid)
 460     {
 461       gchar *display_name;
 462       GtkFilePath *path;
 463
 464       gtk_tree_model_get (GTK_TREE_MODEL (chooser_entry->completion_store),
 465                           &iter,
 466                           DISPLAY_NAME_COLUMN, &display_name,
 467                           PATH_COLUMN, &path,
 468                           -1);
 469
 470       if (g_str_has_prefix (display_name, parsed_file_part))
 471         {
 472           if (!*common_prefix_ret)
 473             {
 474               *common_prefix_ret = g_strdup (display_name);
 475               *unique_path_ret = gtk_file_path_copy (path);
 476             }
 477           else
 478             {
 479               gchar *p = *common_prefix_ret;
 480               const gchar *q = display_name;
 481
 482               while (*p && *p == *q)
 483                 {
 484                   p++;
 485                   q++;
 486                 }
 487
 488               *p = '\0';
 489
 490               gtk_file_path_free (*unique_path_ret);
 491               *unique_path_ret = NULL;
 492             }
 493         }
 494
 495       g_free (display_name);
 496       gtk_file_path_free (path);
 497       valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (chooser_entry->completion_store), &iter);
 498     }
 499
 500   gtk_file_path_free (parsed_folder_path);
 501   g_free (parsed_file_part);
 502 }
 503
 504 /* Finds a common prefix based on the contents of the entry and mandatorily appends it */
 505 static void
 506 append_common_prefix (GtkFileChooserEntry *chooser_entry,
 507                       gboolean             highlight)
 508 {
 509   gchar *common_prefix;
 510   GtkFilePath *unique_path;
 511
 512   find_common_prefix (chooser_entry, &common_prefix, &unique_path);
 513
 514   if (unique_path)
 515     {
 516       common_prefix = maybe_append_separator_to_path (chooser_entry,
 517                                                       unique_path,
 518                                                       common_prefix);
 519       gtk_file_path_free (unique_path);
 520     }
 521
 522   if (common_prefix)
 523     {
 524       gint cursor_pos;
 525       gint common_prefix_len;
 526       gint pos;
 527
 528       cursor_pos = gtk_editable_get_position (GTK_EDITABLE (chooser_entry));
 529       common_prefix_len = g_utf8_strlen (common_prefix, -1);
 530
 531       pos = chooser_entry->file_part_pos;
 532
 533       chooser_entry->in_change = TRUE;
 534       gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
 535                                 pos, cursor_pos);
 536       gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
 537                                 common_prefix, -1,
 538                                 &pos);
 539       chooser_entry->in_change = FALSE;
 540
 541       if (highlight)
 542         {
 543           gtk_editable_select_region (GTK_EDITABLE (chooser_entry),
 544                                       cursor_pos,
 545                                       pos); /* cursor_pos + common_prefix_len); */
 546           chooser_entry->has_completion = TRUE;
 547         }
 548       else
 549         gtk_editable_set_position (GTK_EDITABLE (chooser_entry), pos);
 550
 551       g_free (common_prefix);
 552     }
 553 }
 554
 555 static gboolean
 556 check_completion_callback (GtkFileChooserEntry *chooser_entry)
 557 {
 558   GDK_THREADS_ENTER ();
 559
 560   g_assert (chooser_entry->file_part);
 561
 562   chooser_entry->check_completion_idle = 0;
 563
 564   if (strcmp (chooser_entry->file_part, "") == 0)
 565     goto done;
 566
 567   /* We only insert the common prefix without requiring the user to hit Tab in
 568    * the "open" modes.  For "save" modes, the user must hit Tab to cause the prefix
 569    * to be inserted.  That happens in gtk_file_chooser_entry_focus().
 570    */
 571   if ((chooser_entry->action == GTK_FILE_CHOOSER_ACTION_OPEN
 572        || chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER)
 573       && gtk_editable_get_position (GTK_EDITABLE (chooser_entry)) == GTK_ENTRY (chooser_entry)->text_length)
 574     append_common_prefix (chooser_entry, TRUE);
 575
 576  done:
 577
 578   GDK_THREADS_LEAVE ();
 579
 580   return FALSE;
 581 }
 582
 583 static guint
 584 idle_add (GtkFileChooserEntry *chooser_entry,
 585           GCallback            cb)
 586 {
 587   GSource *source;
 588   guint id;
 589
 590   source = g_idle_source_new ();
 591   g_source_set_priority (source, G_PRIORITY_HIGH);
 592   g_source_set_closure (source,
 593                         g_cclosure_new_object (cb, G_OBJECT (chooser_entry)));
 594   id = g_source_attach (source, NULL);
 595   g_source_unref (source);
 596
 597   return id;
 598 }
 599
 600 static void
 601 add_completion_idle (GtkFileChooserEntry *chooser_entry)
 602 {
 603   /* idle to update the selection based on the file list */
 604   if (chooser_entry->check_completion_idle == 0)
 605     chooser_entry->check_completion_idle =
 606       idle_add (chooser_entry, G_CALLBACK (check_completion_callback));
 607 }
 608
 609
 610 static void
 611 update_current_folder_files (GtkFileChooserEntry *chooser_entry,
 612                              GSList              *added_uris)
 613 {
 614   GSList *tmp_list;
 615
 616   g_assert (chooser_entry->completion_store != NULL);
 617
 618   /* Bah.  Need to turn off sorting */
 619   for (tmp_list = added_uris; tmp_list; tmp_list = tmp_list->next)
 620     {
 621       GtkFileInfo *info;
 622       GtkFilePath *path;
 623
 624       path = tmp_list->data;
 625
 626       info = gtk_file_folder_get_info (chooser_entry->current_folder,
 627                                        path,
 628                                        NULL); /* NULL-GError */
 629       if (info)
 630         {
 631           gchar *display_name = g_strdup (gtk_file_info_get_display_name (info));
 632           GtkTreeIter iter;
 633
 634           display_name = maybe_append_separator_to_path (chooser_entry, path, display_name);
 635
 636           gtk_list_store_append (chooser_entry->completion_store, &iter);
 637           gtk_list_store_set (chooser_entry->completion_store, &iter,
 638                               DISPLAY_NAME_COLUMN, display_name,
 639                               PATH_COLUMN, path,
 640                               -1);
 641
 642           gtk_file_info_free (info);
 643           g_free (display_name);
 644         }
 645     }
 646
 647   /* FIXME: we want to turn off sorting temporarily.  I suck... */
 648   gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (chooser_entry->completion_store),
 649                                         DISPLAY_NAME_COLUMN, GTK_SORT_ASCENDING);
 650
 651   add_completion_idle (chooser_entry);
 652 }
 653
 654 static void
 655 files_added_cb (GtkFileSystem       *file_system,
 656                 GSList              *added_uris,
 657                 GtkFileChooserEntry *chooser_entry)
 658 {
 659   update_current_folder_files (chooser_entry, added_uris);
 660 }
 661
 662 static void
 663 files_deleted_cb (GtkFileSystem       *file_system,
 664                   GSList              *deleted_uris,
 665                   GtkFileChooserEntry *chooser_entry)
 666 {
 667   /* FIXME: gravy... */
 668 }
 669
 670 static void
 671 gtk_file_chooser_entry_do_insert_text (GtkEditable *editable,
 672                                        const gchar *new_text,
 673                                        gint         new_text_length,
 674                                        gint        *position)
 675 {
 676   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (editable);
 677
 678   parent_editable_iface->do_insert_text (editable, new_text, new_text_length, position);
 679
 680   if (! chooser_entry->in_change)
 681     add_completion_idle (GTK_FILE_CHOOSER_ENTRY (editable));
 682 }
 683
 684 static void
 685 gtk_file_chooser_entry_grab_focus (GtkWidget *widget)
 686 {
 687   GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->grab_focus (widget);
 688   _gtk_file_chooser_entry_select_filename (GTK_FILE_CHOOSER_ENTRY (widget));
 689 }
 690
 691 static gboolean
 692 gtk_file_chooser_entry_focus (GtkWidget        *widget,
 693                               GtkDirectionType  direction)
 694 {
 695   GtkFileChooserEntry *chooser_entry;
 696   GtkEditable *editable;
 697   GtkEntry *entry;
 698   GdkModifierType state;
 699   gboolean control_pressed;
 700
 701   chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 702   editable = GTK_EDITABLE (widget);
 703   entry = GTK_ENTRY (widget);
 704
 705   if (!chooser_entry->eat_tabs)
 706     return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->focus (widget, direction);
 707
 708   control_pressed = FALSE;
 709
 710   if (gtk_get_current_event_state (&state))
 711     {
 712       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
 713         control_pressed = TRUE;
 714     }
 715
 716   /* This is a bit evil -- it makes Tab never leave the entry. It basically
 717    * makes it 'safe' for people to hit. */
 718   if ((direction == GTK_DIR_TAB_FORWARD) &&
 719       (GTK_WIDGET_HAS_FOCUS (widget)) &&
 720       (! control_pressed))
 721     {
 722       gint pos = 0;
 723
 724       if (chooser_entry->has_completion)
 725         {
 726           gint sel_end;
 727
 728           if (gtk_editable_get_selection_bounds (editable, NULL, &sel_end))
 729             gtk_editable_set_position (editable, sel_end);
 730         }
 731       else
 732         append_common_prefix (chooser_entry, FALSE);
 733
 734       /* Trigger the completion window to pop up again by a
 735        * zero-length insertion, a bit of a hack.
 736        */
 737       gtk_editable_insert_text (editable, "", -1, &pos);
 738
 739       return TRUE;
 740     }
 741   else
 742     return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->focus (widget, direction);
 743 }
 744
 745 static void
 746 gtk_file_chooser_entry_activate (GtkEntry *entry)
 747 {
 748   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (entry);
 749
 750   if (chooser_entry->has_completion)
 751     {
 752       gtk_editable_set_position (GTK_EDITABLE (entry),
 753                                  entry->text_length);
 754     }
 755
 756   GTK_ENTRY_CLASS (_gtk_file_chooser_entry_parent_class)->activate (entry);
 757 }
 758
 759 static void
 760 load_directory_get_folder_callback (GtkFileSystemHandle *handle,
 761                                     GtkFileFolder       *folder,
 762                                     const GError        *error,
 763                                     gpointer             data)
 764 {
 765   gboolean cancelled = handle->cancelled;
 766   GtkFileChooserEntry *chooser_entry = data;
 767
 768   if (handle != chooser_entry->load_folder_handle)
 769     goto out;
 770
 771   chooser_entry->load_folder_handle = NULL;
 772
 773   if (cancelled || error)
 774     goto out;
 775
 776   /* FIXME: connect to "finished-loading".  In that callback, see our
 777    * load_complete_action and do the appropriate thing.
 778    *
 779    * Do we need to populate the completion store here?  (O(n^2))
 780    * Maybe we should wait until the folder is finished loading.
 781    */
 782
 783   chooser_entry->current_folder = folder;
 784   g_signal_connect (chooser_entry->current_folder, "files-added",
 785                     G_CALLBACK (files_added_cb), chooser_entry);
 786   g_signal_connect (chooser_entry->current_folder, "files-removed",
 787                     G_CALLBACK (files_deleted_cb), chooser_entry);
 788
 789   chooser_entry->completion_store = gtk_list_store_new (N_COLUMNS,
 790                                                         G_TYPE_STRING,
 791                                                         GTK_TYPE_FILE_PATH);
 792
 793   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)),
 794                                   GTK_TREE_MODEL (chooser_entry->completion_store));
 795
 796 out:
 797   g_object_unref (chooser_entry);
 798   g_object_unref (handle);
 799 }
 800
 801 static void
 802 load_current_folder (GtkFileChooserEntry *chooser_entry)
 803 {
 804   if (chooser_entry->current_folder_path == NULL ||
 805       chooser_entry->file_system == NULL)
 806     return;
 807
 808   g_assert (chooser_entry->current_folder == NULL);
 809   g_assert (chooser_entry->completion_store == NULL);
 810   g_assert (chooser_entry->load_folder_handle == NULL);
 811
 812   chooser_entry->load_folder_handle =
 813     gtk_file_system_get_folder (chooser_entry->file_system,
 814                                 chooser_entry->current_folder_path,
 815                                 GTK_FILE_INFO_DISPLAY_NAME | GTK_FILE_INFO_IS_FOLDER,
 816                                 load_directory_get_folder_callback,
 817                                 g_object_ref (chooser_entry));
 818 }
 819
 820 static void
 821 reload_current_folder (GtkFileChooserEntry *chooser_entry,
 822                        GtkFilePath         *folder_path,
 823                        gboolean             force_reload)
 824 {
 825   gboolean reload = FALSE;
 826
 827   if (chooser_entry->current_folder_path)
 828     {
 829       if ((folder_path && gtk_file_path_compare (folder_path, chooser_entry->current_folder_path) != 0)
 830           || force_reload)
 831         {
 832           reload = TRUE;
 833
 834           /* We changed our current directory.  We need to clear out the old
 835            * directory information.
 836            */
 837           if (chooser_entry->current_folder)
 838             {
 839               g_signal_handlers_disconnect_by_func (chooser_entry->current_folder,
 840                                                     G_CALLBACK (files_added_cb), chooser_entry);
 841               g_signal_handlers_disconnect_by_func (chooser_entry->current_folder,
 842                                                     G_CALLBACK (files_deleted_cb), chooser_entry);
 843
 844               if (chooser_entry->load_folder_handle)
 845                 {
 846                   gtk_file_system_cancel_operation (chooser_entry->load_folder_handle);
 847                   chooser_entry->load_folder_handle = NULL;
 848                 }
 849
 850               g_object_unref (chooser_entry->current_folder);
 851               chooser_entry->current_folder = NULL;
 852             }
 853
 854           if (chooser_entry->completion_store)
 855             {
 856               gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), NULL);
 857               g_object_unref (chooser_entry->completion_store);
 858               chooser_entry->completion_store = NULL;
 859             }
 860
 861           gtk_file_path_free (chooser_entry->current_folder_path);
 862           chooser_entry->current_folder_path = gtk_file_path_copy (folder_path);
 863         }
 864     }
 865   else
 866     {
 867       chooser_entry->current_folder_path = gtk_file_path_copy (folder_path);
 868       reload = TRUE;
 869     }
 870
 871   if (reload)
 872     load_current_folder (chooser_entry);
 873 }
 874
 875 static void
 876 refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry)
 877 {
 878   GtkEditable *editable;
 879   gchar *text_up_to_cursor;
 880   GtkFilePath *folder_path;
 881   gchar *file_part;
 882   gsize total_len, file_part_len;
 883   gint file_part_pos;
 884
 885   editable = GTK_EDITABLE (chooser_entry);
 886
 887   text_up_to_cursor = gtk_editable_get_chars (editable, 0, gtk_editable_get_position (editable));
 888
 889   if (!chooser_entry->file_system ||
 890       !chooser_entry->base_folder ||
 891       !gtk_file_system_parse (chooser_entry->file_system,
 892                               chooser_entry->base_folder, text_up_to_cursor,
 893                               &folder_path, &file_part, NULL)) /* NULL-GError */
 894     {
 895       folder_path = gtk_file_path_copy (chooser_entry->base_folder);
 896       file_part = g_strdup ("");
 897       file_part_pos = -1;
 898     }
 899   else
 900     {
 901       file_part_len = strlen (file_part);
 902       total_len = strlen (text_up_to_cursor);
 903       if (total_len > file_part_len)
 904         file_part_pos = g_utf8_strlen (text_up_to_cursor, total_len - file_part_len);
 905       else
 906         file_part_pos = 0;
 907     }
 908
 909   g_free (text_up_to_cursor);
 910
 911   g_free (chooser_entry->file_part);
 912
 913   chooser_entry->file_part = file_part;
 914   chooser_entry->file_part_pos = file_part_pos;
 915
 916   reload_current_folder (chooser_entry, folder_path, file_part_pos == -1);
 917   gtk_file_path_free (folder_path);
 918 }
 919
 920 static void
 921 autocomplete (GtkFileChooserEntry *chooser_entry)
 922 {
 923   g_assert (chooser_entry->current_folder != NULL);
 924   g_assert (gtk_file_folder_is_finished_loading (chooser_entry->current_folder));
 925
 926   /* FIXME */
 927 }
 928
 929 static void
 930 start_autocompletion (GtkFileChooserEntry *chooser_entry)
 931 {
 932   refresh_current_folder_and_file_part (chooser_entry);
 933
 934   if (!chooser_entry->current_folder)
 935     {
 936       /* We don't beep or anything, since this is autocompletion - the user
 937        * didn't request any action explicitly.
 938        */
 939       return;
 940     }
 941
 942   if (gtk_file_folder_is_finished_loading (chooser_entry->current_folder))
 943     autocomplete (chooser_entry);
 944   else
 945     chooser_entry->load_complete_action = LOAD_COMPLETE_AUTOCOMPLETE;
 946 }
 947
 948 static gboolean
 949 start_autocompletion_idle_handler (gpointer data)
 950 {
 951   GtkFileChooserEntry *chooser_entry;
 952
 953   chooser_entry = GTK_FILE_CHOOSER_ENTRY (data);
 954
 955   if (gtk_editable_get_position (GTK_EDITABLE (chooser_entry)) == GTK_ENTRY (chooser_entry)->text_length)
 956     start_autocompletion (chooser_entry);
 957
 958   chooser_entry->start_autocompletion_idle_id = 0;
 959
 960   return FALSE;
 961 }
 962
 963 static void
 964 install_start_autocompletion_idle (GtkFileChooserEntry *chooser_entry)
 965 {
 966   /* We set up an idle handler because we must test the cursor position.  However,
 967    * the cursor is not updated in GtkEntry::changed, so we wait for the idle loop.
 968    */
 969
 970   if (chooser_entry->start_autocompletion_idle_id != 0)
 971     return;
 972
 973   chooser_entry->start_autocompletion_idle_id = g_idle_add (start_autocompletion_idle_handler, chooser_entry);
 974 }
 975
 976 static void
 977 gtk_file_chooser_entry_changed (GtkEditable *editable)
 978 {
 979   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (editable);
 980
 981   if (chooser_entry->in_change)
 982     return;
 983
 984   chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
 985
 986   if ((chooser_entry->action == GTK_FILE_CHOOSER_ACTION_OPEN
 987        || chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER))
 988     install_start_autocompletion_idle (chooser_entry);
 989
 990   /* FIXME: see when the cursor changes (see GtkEntry's cursor_position property, or GtkEditable::set_position and GtkEntry::move_cursor).
 991    * When the cursor changes, cancel the load_complete_action.
 992    * When the entry is activated, cancel the load_complete_action.
 993    * In general, cancel the load_complete_action when the entry loses the focus.
 994    */
 995 }
 996
 997 static void
 998 clear_completion_callback (GtkFileChooserEntry *chooser_entry,
 999                            GParamSpec          *pspec)
1000 {
1001   if (chooser_entry->has_completion)
1002     {
1003       chooser_entry->has_completion = FALSE;
1004       gtk_file_chooser_entry_changed (GTK_EDITABLE (chooser_entry));
1005     }
1006 }
1007
1008 #ifdef G_OS_WIN32
1009 static gint
1010 insert_text_callback (GtkFileChooserEntry *chooser_entry,
1011                       const gchar         *new_text,
1012                       gint                 new_text_length,
1013                       gint                *position,
1014                       gpointer             user_data)
1015 {
1016   const gchar *colon = memchr (new_text, ':', new_text_length);
1017   gint i;
1018
1019   /* Disallow these characters altogether */
1020   for (i = 0; i < new_text_length; i++)
1021     {
1022       if (new_text[i] == '<' ||
1023           new_text[i] == '>' ||
1024           new_text[i] == '"' ||
1025           new_text[i] == '|' ||
1026           new_text[i] == '*' ||
1027           new_text[i] == '?')
1028         break;
1029     }
1030
1031   if (i < new_text_length ||
1032       /* Disallow entering text that would cause a colon to be anywhere except
1033        * after a drive letter.
1034        */
1035       (colon != NULL &&
1036        *position + (colon - new_text) != 1) ||
1037       (new_text_length > 0 &&
1038        *position <= 1 &&
1039        GTK_ENTRY (chooser_entry)->text_length >= 2 &&
1040        gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':'))
1041     {
1042       gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
1043       g_signal_stop_emission_by_name (chooser_entry, "insert_text");
1044       return FALSE;
1045     }
1046
1047   return TRUE;
1048 }
1049
1050 static void
1051 delete_text_callback (GtkFileChooserEntry *chooser_entry,
1052                       gint                 start_pos,
1053                       gint                 end_pos,
1054                       gpointer             user_data)
1055 {
1056   /* If deleting a drive letter, delete the colon, too */
1057   if (start_pos == 0 && end_pos == 1 &&
1058       GTK_ENTRY (chooser_entry)->text_length >= 2 &&
1059       gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':')
1060     {
1061       g_signal_handlers_block_by_func (chooser_entry,
1062                                        G_CALLBACK (delete_text_callback),
1063                                        user_data);
1064       gtk_editable_delete_text (GTK_EDITABLE (chooser_entry), 0, 1);
1065       g_signal_handlers_unblock_by_func (chooser_entry,
1066                                          G_CALLBACK (delete_text_callback),
1067                                          user_data);
1068     }
1069 }
1070 #endif
1071
1072 /**
1073  * _gtk_file_chooser_entry_new:
1074  * @eat_tabs: If %FALSE, allow focus navigation with the tab key.
1075  *
1076  * Creates a new #GtkFileChooserEntry object. #GtkFileChooserEntry
1077  * is an internal implementation widget for the GTK+ file chooser
1078  * which is an entry with completion with respect to a
1079  * #GtkFileSystem object.
1080  *
1081  * Return value: the newly created #GtkFileChooserEntry
1082  **/
1083 GtkWidget *
1084 _gtk_file_chooser_entry_new (gboolean eat_tabs)
1085 {
1086   GtkFileChooserEntry *chooser_entry;
1087
1088   chooser_entry = g_object_new (GTK_TYPE_FILE_CHOOSER_ENTRY, NULL);
1089   chooser_entry->eat_tabs = (eat_tabs != FALSE);
1090
1091   return GTK_WIDGET (chooser_entry);
1092 }
1093
1094 /**
1095  * _gtk_file_chooser_entry_set_file_system:
1096  * @chooser_entry: a #GtkFileChooser
1097  * @file_system: an object implementing #GtkFileSystem
1098  *
1099  * Sets the file system for @chooser_entry.
1100  **/
1101 void
1102 _gtk_file_chooser_entry_set_file_system (GtkFileChooserEntry *chooser_entry,
1103                                          GtkFileSystem       *file_system)
1104 {
1105   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
1106   g_return_if_fail (GTK_IS_FILE_SYSTEM (file_system));
1107
1108   if (file_system != chooser_entry->file_system)
1109     {
1110       if (chooser_entry->file_system)
1111         g_object_unref (chooser_entry->file_system);
1112
1113       chooser_entry->file_system = g_object_ref (file_system);
1114     }
1115 }
1116
1117 /**
1118  * _gtk_file_chooser_entry_set_base_folder:
1119  * @chooser_entry: a #GtkFileChooserEntry
1120  * @path: path of a folder in the chooser entries current file system.
1121  *
1122  * Sets the folder with respect to which completions occur.
1123  **/
1124 void
1125 _gtk_file_chooser_entry_set_base_folder (GtkFileChooserEntry *chooser_entry,
1126                                          const GtkFilePath   *path)
1127 {
1128   if (chooser_entry->base_folder)
1129     gtk_file_path_free (chooser_entry->base_folder);
1130
1131   chooser_entry->base_folder = gtk_file_path_copy (path);
1132
1133   gtk_file_chooser_entry_changed (GTK_EDITABLE (chooser_entry));
1134   _gtk_file_chooser_entry_select_filename (chooser_entry);
1135 }
1136
1137 /**
1138  * _gtk_file_chooser_entry_get_current_folder:
1139  * @chooser_entry: a #GtkFileChooserEntry
1140  *
1141  * Gets the current folder for the #GtkFileChooserEntry. If the
1142  * user has only entered a filename, this will be the base folder
1143  * (see _gtk_file_chooser_entry_set_base_folder()), but if the
1144  * user has entered a relative or absolute path, then it will
1145  * be different. If the user has entered a relative or absolute
1146  * path that doesn't point to a folder in the file system, it will
1147  * be %NULL.
1148  *
1149  * Return value: the path of current folder - this value is owned by the
1150  *  chooser entry and must not be modified or freed.
1151  **/
1152 const GtkFilePath *
1153 _gtk_file_chooser_entry_get_current_folder (GtkFileChooserEntry *chooser_entry)
1154 {
1155   if (chooser_entry->has_completion)
1156     {
1157       gtk_editable_set_position (GTK_EDITABLE (chooser_entry),
1158                                  GTK_ENTRY (chooser_entry)->text_length);
1159     }
1160   return chooser_entry->current_folder_path;
1161 }
1162
1163 /**
1164  * _gtk_file_chooser_entry_get_file_part:
1165  * @chooser_entry: a #GtkFileChooserEntry
1166  *
1167  * Gets the non-folder portion of whatever the user has entered
1168  * into the file selector. What is returned is a UTF-8 string,
1169  * and if a filename path is needed, gtk_file_system_make_path()
1170  * must be used
1171   *
1172  * Return value: the entered filename - this value is owned by the
1173  *  chooser entry and must not be modified or freed.
1174  **/
1175 const gchar *
1176 _gtk_file_chooser_entry_get_file_part (GtkFileChooserEntry *chooser_entry)
1177 {
1178   if (chooser_entry->has_completion)
1179     {
1180       gtk_editable_set_position (GTK_EDITABLE (chooser_entry),
1181                                  GTK_ENTRY (chooser_entry)->text_length);
1182     }
1183   return chooser_entry->file_part;
1184 }
1185
1186 /**
1187  * _gtk_file_chooser_entry_set_file_part:
1188  * @chooser_entry: a #GtkFileChooserEntry
1189  * @file_part: text to display in the entry, in UTF-8
1190  *
1191  * Sets the current text shown in the file chooser entry.
1192  **/
1193 void
1194 _gtk_file_chooser_entry_set_file_part (GtkFileChooserEntry *chooser_entry,
1195                                        const gchar         *file_part)
1196 {
1197   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
1198
1199   gtk_entry_set_text (GTK_ENTRY (chooser_entry), file_part);
1200 }
1201
1202
1203 /**
1204  * _gtk_file_chooser_entry_set_action:
1205  * @chooser_entry: a #GtkFileChooserEntry
1206  * @action: the action which is performed by the file selector using this entry
1207  *
1208  * Sets action which is performed by the file selector using this entry.
1209  * The #GtkFileChooserEntry will use different completion strategies for
1210  * different actions.
1211  **/
1212 void
1213 _gtk_file_chooser_entry_set_action (GtkFileChooserEntry *chooser_entry,
1214                                     GtkFileChooserAction action)
1215 {
1216   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
1217
1218   if (chooser_entry->action != action)
1219     {
1220       GtkEntryCompletion *comp;
1221
1222       chooser_entry->action = action;
1223
1224       comp = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
1225
1226       switch (action)
1227         {
1228         case GTK_FILE_CHOOSER_ACTION_OPEN:
1229         case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
1230           gtk_entry_completion_set_popup_single_match (comp, FALSE);
1231           break;
1232         case GTK_FILE_CHOOSER_ACTION_SAVE:
1233         case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
1234           gtk_entry_completion_set_popup_single_match (comp, TRUE);
1235           break;
1236         }
1237     }
1238 }
1239
1240
1241 /**
1242  * _gtk_file_chooser_entry_get_action:
1243  * @chooser_entry: a #GtkFileChooserEntry
1244  *
1245  * Gets the action for this entry.
1246  *
1247  * Returns: the action
1248  **/
1249 GtkFileChooserAction
1250 _gtk_file_chooser_entry_get_action (GtkFileChooserEntry *chooser_entry)
1251 {
1252   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry),
1253                         GTK_FILE_CHOOSER_ACTION_OPEN);
1254
1255   return chooser_entry->action;
1256 }
1257
1258 gboolean
1259 _gtk_file_chooser_entry_get_is_folder (GtkFileChooserEntry *chooser_entry,
1260                                        const GtkFilePath   *path)
1261 {
1262   gboolean retval = FALSE;
1263
1264   if (chooser_entry->current_folder)
1265     {
1266       GtkFileInfo *file_info;
1267
1268       file_info = gtk_file_folder_get_info (chooser_entry->current_folder,
1269                                             path, NULL);
1270       if (file_info)
1271         {
1272           retval = gtk_file_info_get_is_folder (file_info);
1273           gtk_file_info_free (file_info);
1274         }
1275     }
1276
1277   return retval;
1278 }
1279
1280
1281 /*
1282  * _gtk_file_chooser_entry_select_filename:
1283  * @chooser_entry: a #GtkFileChooserEntry
1284  *
1285  * Selects the filename (without the extension) for user edition.
1286  */
1287 void
1288 _gtk_file_chooser_entry_select_filename (GtkFileChooserEntry *chooser_entry)
1289 {
1290   const gchar *str, *ext;
1291   glong len = -1;
1292
1293   if (chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE)
1294     {
1295       str = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
1296       ext = g_strrstr (str, ".");
1297
1298       if (ext)
1299        len = g_utf8_pointer_to_offset (str, ext);
1300     }
1301
1302   gtk_editable_select_region (GTK_EDITABLE (chooser_entry), 0, (gint) len);
1303 }
1304