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
  23 #include "gtkfilechooserentry.h"
  24
  25 #include <string.h>
  26
  27 #include "gtkcelllayout.h"
  28 #include "gtkcellrenderertext.h"
  29 #include "gtkentry.h"
  30 #include "gtkfilesystemmodel.h"
  31 #include "gtklabel.h"
  32 #include "gtkmain.h"
  33 #include "gtksizerequest.h"
  34 #include "gtkwindow.h"
  35 #include "gtkintl.h"
  36
  37 typedef struct _GtkFileChooserEntryClass GtkFileChooserEntryClass;
  38
  39 #define GTK_FILE_CHOOSER_ENTRY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
  40 #define GTK_IS_FILE_CHOOSER_ENTRY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY))
  41 #define GTK_FILE_CHOOSER_ENTRY_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
  42
  43 struct _GtkFileChooserEntryClass
  44 {
  45   GtkEntryClass parent_class;
  46 };
  47
  48 /* Action to take when the current folder finishes loading (for explicit or automatic completion) */
  49 typedef enum {
  50   LOAD_COMPLETE_NOTHING,
  51   LOAD_COMPLETE_EXPLICIT_COMPLETION
  52 } LoadCompleteAction;
  53
  54 struct _GtkFileChooserEntry
  55 {
  56   GtkEntry parent_instance;
  57
  58   GtkFileChooserAction action;
  59
  60   GFile *base_folder;
  61   GFile *current_folder_file;
  62   gchar *dir_part;
  63   gchar *file_part;
  64
  65   LoadCompleteAction load_complete_action;
  66
  67   GtkTreeModel *completion_store;
  68
  69   guint current_folder_loaded : 1;
  70   guint eat_tabs       : 1;
  71   guint local_only     : 1;
  72 };
  73
  74 enum
  75 {
  76   DISPLAY_NAME_COLUMN,
  77   FULL_PATH_COLUMN,
  78   N_COLUMNS
  79 };
  80
  81 static void     gtk_file_chooser_entry_finalize       (GObject          *object);
  82 static void     gtk_file_chooser_entry_dispose        (GObject          *object);
  83 static void     gtk_file_chooser_entry_grab_focus     (GtkWidget        *widget);
  84 static gboolean gtk_file_chooser_entry_key_press_event (GtkWidget *widget,
  85                                                         GdkEventKey *event);
  86 static gboolean gtk_file_chooser_entry_focus_out_event (GtkWidget       *widget,
  87                                                         GdkEventFocus   *event);
  88
  89 #ifdef G_OS_WIN32
  90 static gint     insert_text_callback      (GtkFileChooserEntry *widget,
  91                                            const gchar         *new_text,
  92                                            gint                 new_text_length,
  93                                            gint                *position,
  94                                            gpointer             user_data);
  95 static void     delete_text_callback      (GtkFileChooserEntry *widget,
  96                                            gint                 start_pos,
  97                                            gint                 end_pos,
  98                                            gpointer             user_data);
  99 #endif
 100
 101 static gboolean match_selected_callback   (GtkEntryCompletion  *completion,
 102                                            GtkTreeModel        *model,
 103                                            GtkTreeIter         *iter,
 104                                            GtkFileChooserEntry *chooser_entry);
 105 static gboolean completion_match_func     (GtkEntryCompletion  *comp,
 106                                            const char          *key,
 107                                            GtkTreeIter         *iter,
 108                                            gpointer             data);
 109
 110 static void refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry);
 111 static void set_completion_folder (GtkFileChooserEntry *chooser_entry,
 112                                    GFile               *folder);
 113 static void finished_loading_cb (GtkFileSystemModel  *model,
 114                                  GError              *error,
 115                                  GtkFileChooserEntry *chooser_entry);
 116
 117 G_DEFINE_TYPE (GtkFileChooserEntry, _gtk_file_chooser_entry, GTK_TYPE_ENTRY)
 118
 119 static char *
 120 gtk_file_chooser_entry_get_completion_text (GtkFileChooserEntry *chooser_entry)
 121 {
 122   GtkEditable *editable = GTK_EDITABLE (chooser_entry);
 123   int start, end;
 124
 125   gtk_editable_get_selection_bounds (editable, &start, &end);
 126   return gtk_editable_get_chars (editable, 0, MIN (start, end));
 127 }
 128
 129 static void
 130 gtk_file_chooser_entry_dispatch_properties_changed (GObject     *object,
 131                                                     guint        n_pspecs,
 132                                                     GParamSpec **pspecs)
 133 {
 134   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 135   guint i;
 136
 137   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispatch_properties_changed (object, n_pspecs, pspecs);
 138
 139   /* What we are after: The text in front of the cursor was modified.
 140    * Unfortunately, there's no other way to catch this. */
 141
 142   for (i = 0; i < n_pspecs; i++)
 143     {
 144       if (pspecs[i]->name == I_("cursor-position") ||
 145           pspecs[i]->name == I_("selection-bound") ||
 146           pspecs[i]->name == I_("text"))
 147         {
 148           chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
 149
 150           refresh_current_folder_and_file_part (chooser_entry);
 151
 152           break;
 153         }
 154     }
 155 }
 156
 157 static void
 158 _gtk_file_chooser_entry_class_init (GtkFileChooserEntryClass *class)
 159 {
 160   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 161   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 162
 163   gobject_class->finalize = gtk_file_chooser_entry_finalize;
 164   gobject_class->dispose = gtk_file_chooser_entry_dispose;
 165   gobject_class->dispatch_properties_changed = gtk_file_chooser_entry_dispatch_properties_changed;
 166
 167   widget_class->grab_focus = gtk_file_chooser_entry_grab_focus;
 168   widget_class->key_press_event = gtk_file_chooser_entry_key_press_event;
 169   widget_class->focus_out_event = gtk_file_chooser_entry_focus_out_event;
 170 }
 171
 172 static void
 173 _gtk_file_chooser_entry_init (GtkFileChooserEntry *chooser_entry)
 174 {
 175   GtkEntryCompletion *comp;
 176   GtkCellRenderer *cell;
 177
 178   chooser_entry->local_only = TRUE;
 179   chooser_entry->base_folder = g_file_new_for_path (g_get_home_dir ());
 180
 181   g_object_set (chooser_entry, "truncate-multiline", TRUE, NULL);
 182
 183   comp = gtk_entry_completion_new ();
 184   gtk_entry_completion_set_popup_single_match (comp, FALSE);
 185   gtk_entry_completion_set_minimum_key_length (comp, 0);
 186   /* see docs for gtk_entry_completion_set_text_column() */
 187   g_object_set (comp, "text-column", FULL_PATH_COLUMN, NULL);
 188
 189   gtk_entry_completion_set_match_func (comp,
 190                                        completion_match_func,
 191                                        chooser_entry,
 192                                        NULL);
 193
 194   cell = gtk_cell_renderer_text_new ();
 195   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (comp),
 196                               cell, TRUE);
 197   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (comp),
 198                                  cell,
 199                                  "text", DISPLAY_NAME_COLUMN);
 200
 201   g_signal_connect (comp, "match-selected",
 202                     G_CALLBACK (match_selected_callback), chooser_entry);
 203
 204   gtk_entry_set_completion (GTK_ENTRY (chooser_entry), comp);
 205   g_object_unref (comp);
 206
 207 #ifdef G_OS_WIN32
 208   g_signal_connect (chooser_entry, "insert-text",
 209                     G_CALLBACK (insert_text_callback), NULL);
 210   g_signal_connect (chooser_entry, "delete-text",
 211                     G_CALLBACK (delete_text_callback), NULL);
 212 #endif
 213 }
 214
 215 static void
 216 gtk_file_chooser_entry_finalize (GObject *object)
 217 {
 218   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 219
 220   g_object_unref (chooser_entry->base_folder);
 221
 222   if (chooser_entry->current_folder_file)
 223     g_object_unref (chooser_entry->current_folder_file);
 224
 225   g_free (chooser_entry->dir_part);
 226   g_free (chooser_entry->file_part);
 227
 228   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->finalize (object);
 229 }
 230
 231 static void
 232 gtk_file_chooser_entry_dispose (GObject *object)
 233 {
 234   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 235
 236   set_completion_folder (chooser_entry, NULL);
 237
 238   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispose (object);
 239 }
 240
 241 /* Match functions for the GtkEntryCompletion */
 242 static gboolean
 243 match_selected_callback (GtkEntryCompletion  *completion,
 244                          GtkTreeModel        *model,
 245                          GtkTreeIter         *iter,
 246                          GtkFileChooserEntry *chooser_entry)
 247 {
 248   char *path;
 249
 250   gtk_tree_model_get (model, iter,
 251                       FULL_PATH_COLUMN, &path,
 252                       -1);
 253
 254   gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
 255                             0,
 256                             gtk_editable_get_position (GTK_EDITABLE (chooser_entry)));
 257   gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
 258                             path,
 259                             0,
 260                             NULL);
 261
 262   g_free (path);
 263
 264   return TRUE;
 265 }
 266
 267 /* Match function for the GtkEntryCompletion */
 268 static gboolean
 269 completion_match_func (GtkEntryCompletion *comp,
 270                        const char         *key_unused,
 271                        GtkTreeIter        *iter,
 272                        gpointer            data)
 273 {
 274   GtkFileChooserEntry *chooser_entry;
 275   char *name = NULL;
 276   gboolean result;
 277   char *norm_file_part;
 278   char *norm_name;
 279
 280   chooser_entry = GTK_FILE_CHOOSER_ENTRY (data);
 281
 282   /* We ignore the key because it is the contents of the entry.  Instead, we
 283    * just use our precomputed file_part.
 284    */
 285   if (!chooser_entry->file_part)
 286     {
 287       return FALSE;
 288     }
 289
 290   gtk_tree_model_get (chooser_entry->completion_store, iter, DISPLAY_NAME_COLUMN, &name, -1);
 291   if (!name)
 292     {
 293       return FALSE; /* Uninitialized row, ugh */
 294     }
 295
 296   /* If we have an empty file_part, then we're at the root of a directory.  In
 297    * that case, we want to match all non-dot files.  We might want to match
 298    * dot_files too if show_hidden is TRUE on the fileselector in the future.
 299    */
 300   /* Additionally, support for gnome .hidden files would be sweet, too */
 301   if (chooser_entry->file_part[0] == '\000')
 302     {
 303       if (name[0] == '.')
 304         result = FALSE;
 305       else
 306         result = TRUE;
 307       g_free (name);
 308
 309       return result;
 310     }
 311
 312
 313   norm_file_part = g_utf8_normalize (chooser_entry->file_part, -1, G_NORMALIZE_ALL);
 314   norm_name = g_utf8_normalize (name, -1, G_NORMALIZE_ALL);
 315
 316 #ifdef G_PLATFORM_WIN32
 317   {
 318     gchar *temp;
 319
 320     temp = norm_file_part;
 321     norm_file_part = g_utf8_casefold (norm_file_part, -1);
 322     g_free (temp);
 323
 324     temp = norm_name;
 325     norm_name = g_utf8_casefold (norm_name, -1);
 326     g_free (temp);
 327   }
 328 #endif
 329
 330   result = (strncmp (norm_file_part, norm_name, strlen (norm_file_part)) == 0);
 331
 332   g_free (norm_file_part);
 333   g_free (norm_name);
 334   g_free (name);
 335
 336   return result;
 337 }
 338
 339 static void
 340 clear_completions (GtkFileChooserEntry *chooser_entry)
 341 {
 342   chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
 343 }
 344
 345 static void
 346 beep (GtkFileChooserEntry *chooser_entry)
 347 {
 348   gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 349 }
 350
 351 static gboolean
 352 is_valid_scheme_character (char c)
 353 {
 354   return g_ascii_isalnum (c) || c == '+' || c == '-' || c == '.';
 355 }
 356
 357 static gboolean
 358 has_uri_scheme (const char *str)
 359 {
 360   const char *p;
 361
 362   p = str;
 363
 364   if (!is_valid_scheme_character (*p))
 365     return FALSE;
 366
 367   do
 368     p++;
 369   while (is_valid_scheme_character (*p));
 370
 371   return (strncmp (p, "://", 3) == 0);
 372 }
 373
 374 static GFile *
 375 gtk_file_chooser_get_file_for_text (GtkFileChooserEntry *chooser_entry,
 376                                     const gchar         *str)
 377 {
 378   GFile *file;
 379
 380   if (str[0] == '~' || g_path_is_absolute (str) || has_uri_scheme (str))
 381     file = g_file_parse_name (str);
 382   else
 383     file = g_file_resolve_relative_path (chooser_entry->base_folder, str);
 384
 385   return file;
 386 }
 387
 388 static GFile *
 389 gtk_file_chooser_get_directory_for_text (GtkFileChooserEntry *chooser_entry,
 390                                          const char *         text)
 391 {
 392   GFile *file, *parent;
 393
 394   file = gtk_file_chooser_get_file_for_text (chooser_entry, text);
 395
 396   if (text[0] == 0 || text[strlen (text) - 1] == G_DIR_SEPARATOR)
 397     return file;
 398
 399   parent = g_file_get_parent (file);
 400   g_object_unref (file);
 401
 402   return parent;
 403 }
 404
 405 /* Finds a common prefix based on the contents of the entry
 406  * and mandatorily appends it
 407  */
 408 static void
 409 explicitly_complete (GtkFileChooserEntry *chooser_entry)
 410 {
 411   clear_completions (chooser_entry);
 412
 413   if (chooser_entry->completion_store)
 414     {
 415       char *completion, *text;
 416       gsize completion_len, text_len;
 417
 418       text = gtk_file_chooser_entry_get_completion_text (chooser_entry);
 419       text_len = strlen (text);
 420       completion = gtk_entry_completion_compute_prefix (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), text);
 421       completion_len = completion ? strlen (completion) : 0;
 422
 423       if (completion_len > text_len)
 424         {
 425           GtkEditable *editable = GTK_EDITABLE (chooser_entry);
 426           int pos = gtk_editable_get_position (editable);
 427
 428           gtk_editable_insert_text (editable,
 429                                     completion + text_len,
 430                                     completion_len - text_len,
 431                                     &pos);
 432           gtk_editable_set_position (editable, pos);
 433           return;
 434         }
 435     }
 436
 437   beep (chooser_entry);
 438 }
 439
 440 static void
 441 gtk_file_chooser_entry_grab_focus (GtkWidget *widget)
 442 {
 443   GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->grab_focus (widget);
 444   _gtk_file_chooser_entry_select_filename (GTK_FILE_CHOOSER_ENTRY (widget));
 445 }
 446
 447 static void
 448 start_explicit_completion (GtkFileChooserEntry *chooser_entry)
 449 {
 450   if (chooser_entry->current_folder_loaded)
 451     explicitly_complete (chooser_entry);
 452   else
 453     chooser_entry->load_complete_action = LOAD_COMPLETE_EXPLICIT_COMPLETION;
 454 }
 455
 456 static gboolean
 457 gtk_file_chooser_entry_key_press_event (GtkWidget *widget,
 458                                         GdkEventKey *event)
 459 {
 460   GtkFileChooserEntry *chooser_entry;
 461   GtkEditable *editable;
 462   GdkModifierType state;
 463   gboolean control_pressed;
 464
 465   chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 466   editable = GTK_EDITABLE (widget);
 467
 468   if (!chooser_entry->eat_tabs)
 469     return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->key_press_event (widget, event);
 470
 471   control_pressed = FALSE;
 472
 473   if (gtk_get_current_event_state (&state))
 474     {
 475       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
 476         control_pressed = TRUE;
 477     }
 478
 479   /* This is a bit evil -- it makes Tab never leave the entry. It basically
 480    * makes it 'safe' for people to hit. */
 481   if (event->keyval == GDK_KEY_Tab && !control_pressed)
 482     {
 483       gint start, end;
 484
 485       gtk_editable_get_selection_bounds (editable, &start, &end);
 486
 487       if (start != end)
 488         gtk_editable_set_position (editable, MAX (start, end));
 489       else
 490         start_explicit_completion (chooser_entry);
 491
 492       return TRUE;
 493      }
 494
 495   return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->key_press_event (widget, event);
 496
 497 }
 498
 499 static gboolean
 500 gtk_file_chooser_entry_focus_out_event (GtkWidget     *widget,
 501                                         GdkEventFocus *event)
 502 {
 503   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 504
 505   chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
 506
 507   return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->focus_out_event (widget, event);
 508 }
 509
 510 static void
 511 discard_completion_store (GtkFileChooserEntry *chooser_entry)
 512 {
 513   if (!chooser_entry->completion_store)
 514     return;
 515
 516   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), NULL);
 517   gtk_entry_completion_set_inline_completion (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), FALSE);
 518   g_object_unref (chooser_entry->completion_store);
 519   chooser_entry->completion_store = NULL;
 520 }
 521
 522 static gboolean
 523 completion_store_set (GtkFileSystemModel  *model,
 524                       GFile               *file,
 525                       GFileInfo           *info,
 526                       int                  column,
 527                       GValue              *value,
 528                       gpointer             data)
 529 {
 530   GtkFileChooserEntry *chooser_entry = data;
 531
 532   const char *prefix = "";
 533   const char *suffix = "";
 534
 535   switch (column)
 536     {
 537     case FULL_PATH_COLUMN:
 538       prefix = chooser_entry->dir_part;
 539       /* fall through */
 540     case DISPLAY_NAME_COLUMN:
 541       if (_gtk_file_info_consider_as_directory (info))
 542         suffix = G_DIR_SEPARATOR_S;
 543
 544       g_value_take_string (value, g_strconcat (
 545               prefix,
 546               g_file_info_get_display_name (info),
 547               suffix,
 548               NULL));
 549       break;
 550     default:
 551       g_assert_not_reached ();
 552       break;
 553     }
 554
 555   return TRUE;
 556 }
 557
 558 /* Fills the completion store from the contents of the current folder */
 559 static void
 560 populate_completion_store (GtkFileChooserEntry *chooser_entry)
 561 {
 562   chooser_entry->completion_store = GTK_TREE_MODEL (
 563       _gtk_file_system_model_new_for_directory (chooser_entry->current_folder_file,
 564                                                 "standard::name,standard::display-name,standard::type",
 565                                                 completion_store_set,
 566                                                 chooser_entry,
 567                                                 N_COLUMNS,
 568                                                 G_TYPE_STRING,
 569                                                 G_TYPE_STRING));
 570   g_signal_connect (chooser_entry->completion_store, "finished-loading",
 571                     G_CALLBACK (finished_loading_cb), chooser_entry);
 572
 573   gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (chooser_entry->completion_store),
 574                                         DISPLAY_NAME_COLUMN, GTK_SORT_ASCENDING);
 575
 576   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)),
 577                                   chooser_entry->completion_store);
 578 }
 579
 580 /* When we finish loading the current folder, this function should get called to
 581  * perform the deferred explicit completion.
 582  */
 583 static void
 584 perform_load_complete_action (GtkFileChooserEntry *chooser_entry)
 585 {
 586   switch (chooser_entry->load_complete_action)
 587     {
 588     case LOAD_COMPLETE_NOTHING:
 589       break;
 590
 591     case LOAD_COMPLETE_EXPLICIT_COMPLETION:
 592       explicitly_complete (chooser_entry);
 593       break;
 594
 595     default:
 596       g_assert_not_reached ();
 597     }
 598
 599 }
 600
 601 /* Callback when the current folder finishes loading */
 602 static void
 603 finished_loading_cb (GtkFileSystemModel  *model,
 604                      GError              *error,
 605                      GtkFileChooserEntry *chooser_entry)
 606 {
 607   GtkEntryCompletion *completion;
 608
 609   chooser_entry->current_folder_loaded = TRUE;
 610
 611   if (error)
 612     {
 613       LoadCompleteAction old_load_complete_action;
 614
 615       old_load_complete_action = chooser_entry->load_complete_action;
 616
 617       discard_completion_store (chooser_entry);
 618       clear_completions (chooser_entry);
 619
 620       if (old_load_complete_action == LOAD_COMPLETE_EXPLICIT_COMPLETION)
 621         {
 622           /* Since this came from explicit user action (Tab completion), we'll present errors visually */
 623
 624           beep (chooser_entry);
 625         }
 626
 627       return;
 628     }
 629
 630   perform_load_complete_action (chooser_entry);
 631
 632   gtk_widget_set_tooltip_text (GTK_WIDGET (chooser_entry), NULL);
 633
 634   completion = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 635   gtk_entry_completion_set_inline_completion (completion, TRUE);
 636   gtk_entry_completion_complete (completion);
 637   gtk_entry_completion_insert_prefix (completion);
 638 }
 639
 640 static void
 641 set_completion_folder (GtkFileChooserEntry *chooser_entry,
 642                        GFile               *folder_file)
 643 {
 644   if (folder_file &&
 645       chooser_entry->local_only
 646       && !g_file_is_native (folder_file))
 647     folder_file = NULL;
 648
 649   if ((chooser_entry->current_folder_file
 650        && folder_file
 651        && g_file_equal (folder_file, chooser_entry->current_folder_file))
 652       || chooser_entry->current_folder_file == folder_file)
 653     return;
 654
 655   if (chooser_entry->current_folder_file)
 656     {
 657       g_object_unref (chooser_entry->current_folder_file);
 658       chooser_entry->current_folder_file = NULL;
 659     }
 660
 661   chooser_entry->current_folder_loaded = FALSE;
 662
 663   discard_completion_store (chooser_entry);
 664
 665   if (folder_file)
 666     {
 667       chooser_entry->current_folder_file = g_object_ref (folder_file);
 668       populate_completion_store (chooser_entry);
 669     }
 670 }
 671
 672 static void
 673 refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry)
 674 {
 675   GFile *folder_file;
 676   char *text, *last_slash;
 677
 678   g_free (chooser_entry->file_part);
 679   g_free (chooser_entry->dir_part);
 680
 681   text = gtk_file_chooser_entry_get_completion_text (chooser_entry);
 682
 683   last_slash = strrchr (text, G_DIR_SEPARATOR);
 684   if (last_slash)
 685     {
 686       chooser_entry->dir_part = g_strndup (text, last_slash - text + 1);
 687       chooser_entry->file_part = g_strdup (last_slash + 1);
 688     }
 689   else
 690     {
 691       chooser_entry->dir_part = g_strdup ("");
 692       chooser_entry->file_part = g_strdup (text);
 693     }
 694
 695   folder_file = gtk_file_chooser_get_directory_for_text (chooser_entry, text);
 696   set_completion_folder (chooser_entry, folder_file);
 697   if (folder_file)
 698     g_object_unref (folder_file);
 699
 700   g_free (text);
 701 }
 702
 703 #ifdef G_OS_WIN32
 704 static gint
 705 insert_text_callback (GtkFileChooserEntry *chooser_entry,
 706                       const gchar         *new_text,
 707                       gint                 new_text_length,
 708                       gint                *position,
 709                       gpointer             user_data)
 710 {
 711   const gchar *colon = memchr (new_text, ':', new_text_length);
 712   gint i;
 713
 714   /* Disallow these characters altogether */
 715   for (i = 0; i < new_text_length; i++)
 716     {
 717       if (new_text[i] == '<' ||
 718           new_text[i] == '>' ||
 719           new_text[i] == '"' ||
 720           new_text[i] == '|' ||
 721           new_text[i] == '*' ||
 722           new_text[i] == '?')
 723         break;
 724     }
 725
 726   if (i < new_text_length ||
 727       /* Disallow entering text that would cause a colon to be anywhere except
 728        * after a drive letter.
 729        */
 730       (colon != NULL &&
 731        *position + (colon - new_text) != 1) ||
 732       (new_text_length > 0 &&
 733        *position <= 1 &&
 734        gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 735        gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':'))
 736     {
 737       gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 738       g_signal_stop_emission_by_name (chooser_entry, "insert_text");
 739       return FALSE;
 740     }
 741
 742   return TRUE;
 743 }
 744
 745 static void
 746 delete_text_callback (GtkFileChooserEntry *chooser_entry,
 747                       gint                 start_pos,
 748                       gint                 end_pos,
 749                       gpointer             user_data)
 750 {
 751   /* If deleting a drive letter, delete the colon, too */
 752   if (start_pos == 0 && end_pos == 1 &&
 753       gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 754       gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':')
 755     {
 756       g_signal_handlers_block_by_func (chooser_entry,
 757                                        G_CALLBACK (delete_text_callback),
 758                                        user_data);
 759       gtk_editable_delete_text (GTK_EDITABLE (chooser_entry), 0, 1);
 760       g_signal_handlers_unblock_by_func (chooser_entry,
 761                                          G_CALLBACK (delete_text_callback),
 762                                          user_data);
 763     }
 764 }
 765 #endif
 766
 767 /**
 768  * _gtk_file_chooser_entry_new:
 769  * @eat_tabs: If %FALSE, allow focus navigation with the tab key.
 770  *
 771  * Creates a new #GtkFileChooserEntry object. #GtkFileChooserEntry
 772  * is an internal implementation widget for the GTK+ file chooser
 773  * which is an entry with completion with respect to a
 774  * #GtkFileSystem object.
 775  *
 776  * Return value: the newly created #GtkFileChooserEntry
 777  **/
 778 GtkWidget *
 779 _gtk_file_chooser_entry_new (gboolean       eat_tabs)
 780 {
 781   GtkFileChooserEntry *chooser_entry;
 782
 783   chooser_entry = g_object_new (GTK_TYPE_FILE_CHOOSER_ENTRY, NULL);
 784   chooser_entry->eat_tabs = (eat_tabs != FALSE);
 785
 786   return GTK_WIDGET (chooser_entry);
 787 }
 788
 789 /**
 790  * _gtk_file_chooser_entry_set_base_folder:
 791  * @chooser_entry: a #GtkFileChooserEntry
 792  * @file: file for a folder in the chooser entries current file system.
 793  *
 794  * Sets the folder with respect to which completions occur.
 795  **/
 796 void
 797 _gtk_file_chooser_entry_set_base_folder (GtkFileChooserEntry *chooser_entry,
 798                                          GFile               *file)
 799 {
 800   if (file)
 801     g_object_ref (file);
 802   else
 803     file = g_file_new_for_path (g_get_home_dir ());
 804
 805   if (g_file_equal (chooser_entry->base_folder, file))
 806     {
 807       g_object_unref (file);
 808       return;
 809     }
 810
 811   if (chooser_entry->base_folder)
 812     g_object_unref (chooser_entry->base_folder);
 813
 814   chooser_entry->base_folder = file;
 815
 816   clear_completions (chooser_entry);
 817 }
 818
 819 /**
 820  * _gtk_file_chooser_entry_get_current_folder:
 821  * @chooser_entry: a #GtkFileChooserEntry
 822  *
 823  * Gets the current folder for the #GtkFileChooserEntry. If the
 824  * user has only entered a filename, this will be in the base folder
 825  * (see _gtk_file_chooser_entry_set_base_folder()), but if the
 826  * user has entered a relative or absolute path, then it will
 827  * be different.  If the user has entered unparsable text, or text which
 828  * the entry cannot handle, this will return %NULL.
 829  *
 830  * Return value: the file for the current folder - you must g_object_unref()
 831  *   the value after use.
 832  **/
 833 GFile *
 834 _gtk_file_chooser_entry_get_current_folder (GtkFileChooserEntry *chooser_entry)
 835 {
 836   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 837
 838   return gtk_file_chooser_get_directory_for_text (chooser_entry,
 839                                                   gtk_entry_get_text (GTK_ENTRY (chooser_entry)));
 840 }
 841
 842 /**
 843  * _gtk_file_chooser_entry_get_file_part:
 844  * @chooser_entry: a #GtkFileChooserEntry
 845  *
 846  * Gets the non-folder portion of whatever the user has entered
 847  * into the file selector. What is returned is a UTF-8 string,
 848  * and if a filename path is needed, g_file_get_child_for_display_name()
 849  * must be used
 850   *
 851  * Return value: the entered filename - this value is owned by the
 852  *  chooser entry and must not be modified or freed.
 853  **/
 854 const gchar *
 855 _gtk_file_chooser_entry_get_file_part (GtkFileChooserEntry *chooser_entry)
 856 {
 857   const char *last_slash, *text;
 858
 859   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 860
 861   text = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 862   last_slash = strrchr (text, G_DIR_SEPARATOR);
 863   if (last_slash)
 864     return last_slash + 1;
 865   else
 866     return text;
 867 }
 868
 869 /**
 870  * _gtk_file_chooser_entry_set_action:
 871  * @chooser_entry: a #GtkFileChooserEntry
 872  * @action: the action which is performed by the file selector using this entry
 873  *
 874  * Sets action which is performed by the file selector using this entry.
 875  * The #GtkFileChooserEntry will use different completion strategies for
 876  * different actions.
 877  **/
 878 void
 879 _gtk_file_chooser_entry_set_action (GtkFileChooserEntry *chooser_entry,
 880                                     GtkFileChooserAction action)
 881 {
 882   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
 883
 884   if (chooser_entry->action != action)
 885     {
 886       GtkEntryCompletion *comp;
 887
 888       chooser_entry->action = action;
 889
 890       comp = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 891
 892       /* FIXME: do we need to actually set the following? */
 893
 894       switch (action)
 895         {
 896         case GTK_FILE_CHOOSER_ACTION_OPEN:
 897         case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
 898           gtk_entry_completion_set_popup_single_match (comp, FALSE);
 899           break;
 900         case GTK_FILE_CHOOSER_ACTION_SAVE:
 901         case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
 902           gtk_entry_completion_set_popup_single_match (comp, TRUE);
 903           break;
 904         }
 905     }
 906 }
 907
 908
 909 /**
 910  * _gtk_file_chooser_entry_get_action:
 911  * @chooser_entry: a #GtkFileChooserEntry
 912  *
 913  * Gets the action for this entry.
 914  *
 915  * Returns: the action
 916  **/
 917 GtkFileChooserAction
 918 _gtk_file_chooser_entry_get_action (GtkFileChooserEntry *chooser_entry)
 919 {
 920   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry),
 921                         GTK_FILE_CHOOSER_ACTION_OPEN);
 922
 923   return chooser_entry->action;
 924 }
 925
 926 gboolean
 927 _gtk_file_chooser_entry_get_is_folder (GtkFileChooserEntry *chooser_entry,
 928                                        GFile               *file)
 929 {
 930   GtkTreeIter iter;
 931   GFileInfo *info;
 932
 933   if (chooser_entry->completion_store == NULL ||
 934       !_gtk_file_system_model_get_iter_for_file (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 935                                                  &iter,
 936                                                  file))
 937     return FALSE;
 938
 939   info = _gtk_file_system_model_get_info (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 940                                           &iter);
 941
 942   return _gtk_file_info_consider_as_directory (info);
 943 }
 944
 945
 946 /*
 947  * _gtk_file_chooser_entry_select_filename:
 948  * @chooser_entry: a #GtkFileChooserEntry
 949  *
 950  * Selects the filename (without the extension) for user edition.
 951  */
 952 void
 953 _gtk_file_chooser_entry_select_filename (GtkFileChooserEntry *chooser_entry)
 954 {
 955   const gchar *str, *ext;
 956   glong len = -1;
 957
 958   if (chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE)
 959     {
 960       str = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 961       ext = g_strrstr (str, ".");
 962
 963       if (ext)
 964        len = g_utf8_pointer_to_offset (str, ext);
 965     }
 966
 967   gtk_editable_select_region (GTK_EDITABLE (chooser_entry), 0, (gint) len);
 968 }
 969
 970 void
 971 _gtk_file_chooser_entry_set_local_only (GtkFileChooserEntry *chooser_entry,
 972                                         gboolean             local_only)
 973 {
 974   chooser_entry->local_only = local_only;
 975   clear_completions (chooser_entry);
 976 }
 977
 978 gboolean
 979 _gtk_file_chooser_entry_get_local_only (GtkFileChooserEntry *chooser_entry)
 980 {
 981   return chooser_entry->local_only;
 982 }