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   GtkTreeModel *completion_store;
  66
  67   guint current_folder_loaded : 1;
  68   guint complete_on_load : 1;
  69   guint eat_tabs       : 1;
  70   guint local_only     : 1;
  71 };
  72
  73 enum
  74 {
  75   DISPLAY_NAME_COLUMN,
  76   FULL_PATH_COLUMN,
  77   N_COLUMNS
  78 };
  79
  80 static void     gtk_file_chooser_entry_finalize       (GObject          *object);
  81 static void     gtk_file_chooser_entry_dispose        (GObject          *object);
  82 static void     gtk_file_chooser_entry_grab_focus     (GtkWidget        *widget);
  83 static gboolean gtk_file_chooser_entry_key_press_event (GtkWidget *widget,
  84                                                         GdkEventKey *event);
  85 static gboolean gtk_file_chooser_entry_focus_out_event (GtkWidget       *widget,
  86                                                         GdkEventFocus   *event);
  87
  88 #ifdef G_OS_WIN32
  89 static gint     insert_text_callback      (GtkFileChooserEntry *widget,
  90                                            const gchar         *new_text,
  91                                            gint                 new_text_length,
  92                                            gint                *position,
  93                                            gpointer             user_data);
  94 static void     delete_text_callback      (GtkFileChooserEntry *widget,
  95                                            gint                 start_pos,
  96                                            gint                 end_pos,
  97                                            gpointer             user_data);
  98 #endif
  99
 100 static gboolean match_selected_callback   (GtkEntryCompletion  *completion,
 101                                            GtkTreeModel        *model,
 102                                            GtkTreeIter         *iter,
 103                                            GtkFileChooserEntry *chooser_entry);
 104
 105 static void set_complete_on_load (GtkFileChooserEntry *chooser_entry,
 106                                   gboolean             complete_on_load);
 107 static void refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry);
 108 static void set_completion_folder (GtkFileChooserEntry *chooser_entry,
 109                                    GFile               *folder);
 110 static void finished_loading_cb (GtkFileSystemModel  *model,
 111                                  GError              *error,
 112                                  GtkFileChooserEntry *chooser_entry);
 113
 114 G_DEFINE_TYPE (GtkFileChooserEntry, _gtk_file_chooser_entry, GTK_TYPE_ENTRY)
 115
 116 static char *
 117 gtk_file_chooser_entry_get_completion_text (GtkFileChooserEntry *chooser_entry)
 118 {
 119   GtkEditable *editable = GTK_EDITABLE (chooser_entry);
 120   int start, end;
 121
 122   gtk_editable_get_selection_bounds (editable, &start, &end);
 123   return gtk_editable_get_chars (editable, 0, MIN (start, end));
 124 }
 125
 126 static void
 127 gtk_file_chooser_entry_dispatch_properties_changed (GObject     *object,
 128                                                     guint        n_pspecs,
 129                                                     GParamSpec **pspecs)
 130 {
 131   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 132   guint i;
 133
 134   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispatch_properties_changed (object, n_pspecs, pspecs);
 135
 136   /* What we are after: The text in front of the cursor was modified.
 137    * Unfortunately, there's no other way to catch this. */
 138
 139   for (i = 0; i < n_pspecs; i++)
 140     {
 141       if (pspecs[i]->name == I_("cursor-position") ||
 142           pspecs[i]->name == I_("selection-bound") ||
 143           pspecs[i]->name == I_("text"))
 144         {
 145           set_complete_on_load (chooser_entry, FALSE);
 146           refresh_current_folder_and_file_part (chooser_entry);
 147           break;
 148         }
 149     }
 150 }
 151
 152 static void
 153 _gtk_file_chooser_entry_class_init (GtkFileChooserEntryClass *class)
 154 {
 155   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 156   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 157
 158   gobject_class->finalize = gtk_file_chooser_entry_finalize;
 159   gobject_class->dispose = gtk_file_chooser_entry_dispose;
 160   gobject_class->dispatch_properties_changed = gtk_file_chooser_entry_dispatch_properties_changed;
 161
 162   widget_class->grab_focus = gtk_file_chooser_entry_grab_focus;
 163   widget_class->key_press_event = gtk_file_chooser_entry_key_press_event;
 164   widget_class->focus_out_event = gtk_file_chooser_entry_focus_out_event;
 165 }
 166
 167 static void
 168 _gtk_file_chooser_entry_init (GtkFileChooserEntry *chooser_entry)
 169 {
 170   GtkEntryCompletion *comp;
 171   GtkCellRenderer *cell;
 172
 173   chooser_entry->local_only = TRUE;
 174   chooser_entry->base_folder = g_file_new_for_path (g_get_home_dir ());
 175
 176   g_object_set (chooser_entry, "truncate-multiline", TRUE, NULL);
 177
 178   comp = gtk_entry_completion_new ();
 179   gtk_entry_completion_set_popup_single_match (comp, FALSE);
 180   gtk_entry_completion_set_minimum_key_length (comp, 0);
 181   /* see docs for gtk_entry_completion_set_text_column() */
 182   g_object_set (comp, "text-column", FULL_PATH_COLUMN, NULL);
 183
 184   /* Need a match func here or entry completion uses a wrong one.
 185    * We do our own filtering after all. */
 186   gtk_entry_completion_set_match_func (comp,
 187                                        (GtkEntryCompletionMatchFunc) gtk_true,
 188                                        chooser_entry,
 189                                        NULL);
 190
 191   cell = gtk_cell_renderer_text_new ();
 192   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (comp),
 193                               cell, TRUE);
 194   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (comp),
 195                                  cell,
 196                                  "text", DISPLAY_NAME_COLUMN);
 197
 198   g_signal_connect (comp, "match-selected",
 199                     G_CALLBACK (match_selected_callback), chooser_entry);
 200
 201   gtk_entry_set_completion (GTK_ENTRY (chooser_entry), comp);
 202   g_object_unref (comp);
 203
 204 #ifdef G_OS_WIN32
 205   g_signal_connect (chooser_entry, "insert-text",
 206                     G_CALLBACK (insert_text_callback), NULL);
 207   g_signal_connect (chooser_entry, "delete-text",
 208                     G_CALLBACK (delete_text_callback), NULL);
 209 #endif
 210 }
 211
 212 static void
 213 gtk_file_chooser_entry_finalize (GObject *object)
 214 {
 215   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 216
 217   g_object_unref (chooser_entry->base_folder);
 218
 219   if (chooser_entry->current_folder_file)
 220     g_object_unref (chooser_entry->current_folder_file);
 221
 222   g_free (chooser_entry->dir_part);
 223   g_free (chooser_entry->file_part);
 224
 225   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->finalize (object);
 226 }
 227
 228 static void
 229 gtk_file_chooser_entry_dispose (GObject *object)
 230 {
 231   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 232
 233   set_completion_folder (chooser_entry, NULL);
 234
 235   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispose (object);
 236 }
 237
 238 /* Match functions for the GtkEntryCompletion */
 239 static gboolean
 240 match_selected_callback (GtkEntryCompletion  *completion,
 241                          GtkTreeModel        *model,
 242                          GtkTreeIter         *iter,
 243                          GtkFileChooserEntry *chooser_entry)
 244 {
 245   char *path;
 246
 247   gtk_tree_model_get (model, iter,
 248                       FULL_PATH_COLUMN, &path,
 249                       -1);
 250
 251   gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
 252                             0,
 253                             gtk_editable_get_position (GTK_EDITABLE (chooser_entry)));
 254   gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
 255                             path,
 256                             0,
 257                             NULL);
 258
 259   g_free (path);
 260
 261   return TRUE;
 262 }
 263
 264 static void
 265 set_complete_on_load (GtkFileChooserEntry *chooser_entry,
 266                       gboolean             complete_on_load)
 267 {
 268   /* a completion was triggered, but we couldn't do it.
 269    * So no text was inserted when pressing tab, so we beep */
 270   if (chooser_entry->complete_on_load && !complete_on_load)
 271     gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 272
 273   chooser_entry->complete_on_load = complete_on_load;
 274 }
 275
 276 static gboolean
 277 is_valid_scheme_character (char c)
 278 {
 279   return g_ascii_isalnum (c) || c == '+' || c == '-' || c == '.';
 280 }
 281
 282 static gboolean
 283 has_uri_scheme (const char *str)
 284 {
 285   const char *p;
 286
 287   p = str;
 288
 289   if (!is_valid_scheme_character (*p))
 290     return FALSE;
 291
 292   do
 293     p++;
 294   while (is_valid_scheme_character (*p));
 295
 296   return (strncmp (p, "://", 3) == 0);
 297 }
 298
 299 static GFile *
 300 gtk_file_chooser_get_file_for_text (GtkFileChooserEntry *chooser_entry,
 301                                     const gchar         *str)
 302 {
 303   GFile *file;
 304
 305   if (str[0] == '~' || g_path_is_absolute (str) || has_uri_scheme (str))
 306     file = g_file_parse_name (str);
 307   else
 308     file = g_file_resolve_relative_path (chooser_entry->base_folder, str);
 309
 310   return file;
 311 }
 312
 313 static GFile *
 314 gtk_file_chooser_get_directory_for_text (GtkFileChooserEntry *chooser_entry,
 315                                          const char *         text)
 316 {
 317   GFile *file, *parent;
 318
 319   file = gtk_file_chooser_get_file_for_text (chooser_entry, text);
 320
 321   if (text[0] == 0 || text[strlen (text) - 1] == G_DIR_SEPARATOR)
 322     return file;
 323
 324   parent = g_file_get_parent (file);
 325   g_object_unref (file);
 326
 327   return parent;
 328 }
 329
 330 /* Finds a common prefix based on the contents of the entry
 331  * and mandatorily appends it
 332  */
 333 static void
 334 explicitly_complete (GtkFileChooserEntry *chooser_entry)
 335 {
 336   chooser_entry->complete_on_load = FALSE;
 337
 338   if (chooser_entry->completion_store)
 339     {
 340       char *completion, *text;
 341       gsize completion_len, text_len;
 342
 343       text = gtk_file_chooser_entry_get_completion_text (chooser_entry);
 344       text_len = strlen (text);
 345       completion = gtk_entry_completion_compute_prefix (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), text);
 346       completion_len = completion ? strlen (completion) : 0;
 347
 348       if (completion_len > text_len)
 349         {
 350           GtkEditable *editable = GTK_EDITABLE (chooser_entry);
 351           int pos = gtk_editable_get_position (editable);
 352
 353           gtk_editable_insert_text (editable,
 354                                     completion + text_len,
 355                                     completion_len - text_len,
 356                                     &pos);
 357           gtk_editable_set_position (editable, pos);
 358           return;
 359         }
 360     }
 361
 362   gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 363 }
 364
 365 static void
 366 gtk_file_chooser_entry_grab_focus (GtkWidget *widget)
 367 {
 368   GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->grab_focus (widget);
 369   _gtk_file_chooser_entry_select_filename (GTK_FILE_CHOOSER_ENTRY (widget));
 370 }
 371
 372 static void
 373 start_explicit_completion (GtkFileChooserEntry *chooser_entry)
 374 {
 375   if (chooser_entry->current_folder_loaded)
 376     explicitly_complete (chooser_entry);
 377   else
 378     set_complete_on_load (chooser_entry, TRUE);
 379 }
 380
 381 static gboolean
 382 gtk_file_chooser_entry_key_press_event (GtkWidget *widget,
 383                                         GdkEventKey *event)
 384 {
 385   GtkFileChooserEntry *chooser_entry;
 386   GtkEditable *editable;
 387   GdkModifierType state;
 388   gboolean control_pressed;
 389
 390   chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 391   editable = GTK_EDITABLE (widget);
 392
 393   if (!chooser_entry->eat_tabs)
 394     return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->key_press_event (widget, event);
 395
 396   control_pressed = FALSE;
 397
 398   if (gtk_get_current_event_state (&state))
 399     {
 400       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
 401         control_pressed = TRUE;
 402     }
 403
 404   /* This is a bit evil -- it makes Tab never leave the entry. It basically
 405    * makes it 'safe' for people to hit. */
 406   if (event->keyval == GDK_KEY_Tab && !control_pressed)
 407     {
 408       gint start, end;
 409
 410       gtk_editable_get_selection_bounds (editable, &start, &end);
 411
 412       if (start != end)
 413         gtk_editable_set_position (editable, MAX (start, end));
 414       else
 415         start_explicit_completion (chooser_entry);
 416
 417       return TRUE;
 418      }
 419
 420   return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->key_press_event (widget, event);
 421
 422 }
 423
 424 static gboolean
 425 gtk_file_chooser_entry_focus_out_event (GtkWidget     *widget,
 426                                         GdkEventFocus *event)
 427 {
 428   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 429
 430   set_complete_on_load (chooser_entry, FALSE);
 431
 432   return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->focus_out_event (widget, event);
 433 }
 434
 435 static void
 436 discard_completion_store (GtkFileChooserEntry *chooser_entry)
 437 {
 438   if (!chooser_entry->completion_store)
 439     return;
 440
 441   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), NULL);
 442   gtk_entry_completion_set_inline_completion (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), FALSE);
 443   g_object_unref (chooser_entry->completion_store);
 444   chooser_entry->completion_store = NULL;
 445 }
 446
 447 static gboolean
 448 completion_store_set (GtkFileSystemModel  *model,
 449                       GFile               *file,
 450                       GFileInfo           *info,
 451                       int                  column,
 452                       GValue              *value,
 453                       gpointer             data)
 454 {
 455   GtkFileChooserEntry *chooser_entry = data;
 456
 457   const char *prefix = "";
 458   const char *suffix = "";
 459
 460   switch (column)
 461     {
 462     case FULL_PATH_COLUMN:
 463       prefix = chooser_entry->dir_part;
 464       /* fall through */
 465     case DISPLAY_NAME_COLUMN:
 466       if (_gtk_file_info_consider_as_directory (info))
 467         suffix = G_DIR_SEPARATOR_S;
 468
 469       g_value_take_string (value, g_strconcat (
 470               prefix,
 471               g_file_info_get_display_name (info),
 472               suffix,
 473               NULL));
 474       break;
 475     default:
 476       g_assert_not_reached ();
 477       break;
 478     }
 479
 480   return TRUE;
 481 }
 482
 483 /* Fills the completion store from the contents of the current folder */
 484 static void
 485 populate_completion_store (GtkFileChooserEntry *chooser_entry)
 486 {
 487   chooser_entry->completion_store = GTK_TREE_MODEL (
 488       _gtk_file_system_model_new_for_directory (chooser_entry->current_folder_file,
 489                                                 "standard::name,standard::display-name,standard::type",
 490                                                 completion_store_set,
 491                                                 chooser_entry,
 492                                                 N_COLUMNS,
 493                                                 G_TYPE_STRING,
 494                                                 G_TYPE_STRING));
 495   g_signal_connect (chooser_entry->completion_store, "finished-loading",
 496                     G_CALLBACK (finished_loading_cb), chooser_entry);
 497
 498   _gtk_file_system_model_set_filter_folders (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 499                                              TRUE);
 500   _gtk_file_system_model_set_show_files (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 501                                          chooser_entry->action == GTK_FILE_CHOOSER_ACTION_OPEN ||
 502                                          chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE);
 503   gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (chooser_entry->completion_store),
 504                                         DISPLAY_NAME_COLUMN, GTK_SORT_ASCENDING);
 505
 506   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)),
 507                                   chooser_entry->completion_store);
 508 }
 509
 510 /* Callback when the current folder finishes loading */
 511 static void
 512 finished_loading_cb (GtkFileSystemModel  *model,
 513                      GError              *error,
 514                      GtkFileChooserEntry *chooser_entry)
 515 {
 516   GtkEntryCompletion *completion;
 517
 518   chooser_entry->current_folder_loaded = TRUE;
 519
 520   if (error)
 521     {
 522       discard_completion_store (chooser_entry);
 523       set_complete_on_load (chooser_entry, FALSE);
 524       return;
 525     }
 526
 527   if (chooser_entry->complete_on_load)
 528     explicitly_complete (chooser_entry);
 529
 530   gtk_widget_set_tooltip_text (GTK_WIDGET (chooser_entry), NULL);
 531
 532   completion = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 533   gtk_entry_completion_set_inline_completion (completion, TRUE);
 534   gtk_entry_completion_complete (completion);
 535   gtk_entry_completion_insert_prefix (completion);
 536 }
 537
 538 static void
 539 set_completion_folder (GtkFileChooserEntry *chooser_entry,
 540                        GFile               *folder_file)
 541 {
 542   if (folder_file &&
 543       chooser_entry->local_only
 544       && !g_file_is_native (folder_file))
 545     folder_file = NULL;
 546
 547   if ((chooser_entry->current_folder_file
 548        && folder_file
 549        && g_file_equal (folder_file, chooser_entry->current_folder_file))
 550       || chooser_entry->current_folder_file == folder_file)
 551     return;
 552
 553   if (chooser_entry->current_folder_file)
 554     {
 555       g_object_unref (chooser_entry->current_folder_file);
 556       chooser_entry->current_folder_file = NULL;
 557     }
 558
 559   chooser_entry->current_folder_loaded = FALSE;
 560
 561   discard_completion_store (chooser_entry);
 562
 563   if (folder_file)
 564     {
 565       chooser_entry->current_folder_file = g_object_ref (folder_file);
 566       populate_completion_store (chooser_entry);
 567     }
 568 }
 569
 570 static void
 571 refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry)
 572 {
 573   GFile *folder_file;
 574   char *text, *last_slash, *old_file_part;
 575
 576   old_file_part = chooser_entry->file_part;
 577   g_free (chooser_entry->dir_part);
 578
 579   text = gtk_file_chooser_entry_get_completion_text (chooser_entry);
 580
 581   last_slash = strrchr (text, G_DIR_SEPARATOR);
 582   if (last_slash)
 583     {
 584       chooser_entry->dir_part = g_strndup (text, last_slash - text + 1);
 585       chooser_entry->file_part = g_strdup (last_slash + 1);
 586     }
 587   else
 588     {
 589       chooser_entry->dir_part = g_strdup ("");
 590       chooser_entry->file_part = g_strdup (text);
 591     }
 592
 593   folder_file = gtk_file_chooser_get_directory_for_text (chooser_entry, text);
 594   set_completion_folder (chooser_entry, folder_file);
 595   if (folder_file)
 596     g_object_unref (folder_file);
 597
 598   if (chooser_entry->completion_store &&
 599       (g_strcmp0 (old_file_part, chooser_entry->file_part) != 0))
 600     {
 601       GtkFileFilter *filter;
 602       char *pattern;
 603
 604       filter = gtk_file_filter_new ();
 605       pattern = g_strconcat (chooser_entry->file_part, "*", NULL);
 606       gtk_file_filter_add_pattern (filter, pattern);
 607
 608       _gtk_file_system_model_set_filter (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 609                                          filter);
 610
 611       g_free (pattern);
 612       g_object_unref (filter);
 613     }
 614
 615   g_free (text);
 616   g_free (old_file_part);
 617 }
 618
 619 #ifdef G_OS_WIN32
 620 static gint
 621 insert_text_callback (GtkFileChooserEntry *chooser_entry,
 622                       const gchar         *new_text,
 623                       gint                 new_text_length,
 624                       gint                *position,
 625                       gpointer             user_data)
 626 {
 627   const gchar *colon = memchr (new_text, ':', new_text_length);
 628   gint i;
 629
 630   /* Disallow these characters altogether */
 631   for (i = 0; i < new_text_length; i++)
 632     {
 633       if (new_text[i] == '<' ||
 634           new_text[i] == '>' ||
 635           new_text[i] == '"' ||
 636           new_text[i] == '|' ||
 637           new_text[i] == '*' ||
 638           new_text[i] == '?')
 639         break;
 640     }
 641
 642   if (i < new_text_length ||
 643       /* Disallow entering text that would cause a colon to be anywhere except
 644        * after a drive letter.
 645        */
 646       (colon != NULL &&
 647        *position + (colon - new_text) != 1) ||
 648       (new_text_length > 0 &&
 649        *position <= 1 &&
 650        gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 651        gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':'))
 652     {
 653       gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 654       g_signal_stop_emission_by_name (chooser_entry, "insert_text");
 655       return FALSE;
 656     }
 657
 658   return TRUE;
 659 }
 660
 661 static void
 662 delete_text_callback (GtkFileChooserEntry *chooser_entry,
 663                       gint                 start_pos,
 664                       gint                 end_pos,
 665                       gpointer             user_data)
 666 {
 667   /* If deleting a drive letter, delete the colon, too */
 668   if (start_pos == 0 && end_pos == 1 &&
 669       gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 670       gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':')
 671     {
 672       g_signal_handlers_block_by_func (chooser_entry,
 673                                        G_CALLBACK (delete_text_callback),
 674                                        user_data);
 675       gtk_editable_delete_text (GTK_EDITABLE (chooser_entry), 0, 1);
 676       g_signal_handlers_unblock_by_func (chooser_entry,
 677                                          G_CALLBACK (delete_text_callback),
 678                                          user_data);
 679     }
 680 }
 681 #endif
 682
 683 /**
 684  * _gtk_file_chooser_entry_new:
 685  * @eat_tabs: If %FALSE, allow focus navigation with the tab key.
 686  *
 687  * Creates a new #GtkFileChooserEntry object. #GtkFileChooserEntry
 688  * is an internal implementation widget for the GTK+ file chooser
 689  * which is an entry with completion with respect to a
 690  * #GtkFileSystem object.
 691  *
 692  * Return value: the newly created #GtkFileChooserEntry
 693  **/
 694 GtkWidget *
 695 _gtk_file_chooser_entry_new (gboolean       eat_tabs)
 696 {
 697   GtkFileChooserEntry *chooser_entry;
 698
 699   chooser_entry = g_object_new (GTK_TYPE_FILE_CHOOSER_ENTRY, NULL);
 700   chooser_entry->eat_tabs = (eat_tabs != FALSE);
 701
 702   return GTK_WIDGET (chooser_entry);
 703 }
 704
 705 /**
 706  * _gtk_file_chooser_entry_set_base_folder:
 707  * @chooser_entry: a #GtkFileChooserEntry
 708  * @file: file for a folder in the chooser entries current file system.
 709  *
 710  * Sets the folder with respect to which completions occur.
 711  **/
 712 void
 713 _gtk_file_chooser_entry_set_base_folder (GtkFileChooserEntry *chooser_entry,
 714                                          GFile               *file)
 715 {
 716   if (file)
 717     g_object_ref (file);
 718   else
 719     file = g_file_new_for_path (g_get_home_dir ());
 720
 721   if (g_file_equal (chooser_entry->base_folder, file))
 722     {
 723       g_object_unref (file);
 724       return;
 725     }
 726
 727   if (chooser_entry->base_folder)
 728     g_object_unref (chooser_entry->base_folder);
 729
 730   chooser_entry->base_folder = file;
 731
 732   refresh_current_folder_and_file_part (chooser_entry);
 733 }
 734
 735 /**
 736  * _gtk_file_chooser_entry_get_current_folder:
 737  * @chooser_entry: a #GtkFileChooserEntry
 738  *
 739  * Gets the current folder for the #GtkFileChooserEntry. If the
 740  * user has only entered a filename, this will be in the base folder
 741  * (see _gtk_file_chooser_entry_set_base_folder()), but if the
 742  * user has entered a relative or absolute path, then it will
 743  * be different.  If the user has entered unparsable text, or text which
 744  * the entry cannot handle, this will return %NULL.
 745  *
 746  * Return value: the file for the current folder - you must g_object_unref()
 747  *   the value after use.
 748  **/
 749 GFile *
 750 _gtk_file_chooser_entry_get_current_folder (GtkFileChooserEntry *chooser_entry)
 751 {
 752   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 753
 754   return gtk_file_chooser_get_directory_for_text (chooser_entry,
 755                                                   gtk_entry_get_text (GTK_ENTRY (chooser_entry)));
 756 }
 757
 758 /**
 759  * _gtk_file_chooser_entry_get_file_part:
 760  * @chooser_entry: a #GtkFileChooserEntry
 761  *
 762  * Gets the non-folder portion of whatever the user has entered
 763  * into the file selector. What is returned is a UTF-8 string,
 764  * and if a filename path is needed, g_file_get_child_for_display_name()
 765  * must be used
 766   *
 767  * Return value: the entered filename - this value is owned by the
 768  *  chooser entry and must not be modified or freed.
 769  **/
 770 const gchar *
 771 _gtk_file_chooser_entry_get_file_part (GtkFileChooserEntry *chooser_entry)
 772 {
 773   const char *last_slash, *text;
 774
 775   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 776
 777   text = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 778   last_slash = strrchr (text, G_DIR_SEPARATOR);
 779   if (last_slash)
 780     return last_slash + 1;
 781   else
 782     return text;
 783 }
 784
 785 /**
 786  * _gtk_file_chooser_entry_set_action:
 787  * @chooser_entry: a #GtkFileChooserEntry
 788  * @action: the action which is performed by the file selector using this entry
 789  *
 790  * Sets action which is performed by the file selector using this entry.
 791  * The #GtkFileChooserEntry will use different completion strategies for
 792  * different actions.
 793  **/
 794 void
 795 _gtk_file_chooser_entry_set_action (GtkFileChooserEntry *chooser_entry,
 796                                     GtkFileChooserAction action)
 797 {
 798   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
 799
 800   if (chooser_entry->action != action)
 801     {
 802       GtkEntryCompletion *comp;
 803
 804       chooser_entry->action = action;
 805
 806       comp = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 807
 808       /* FIXME: do we need to actually set the following? */
 809
 810       switch (action)
 811         {
 812         case GTK_FILE_CHOOSER_ACTION_OPEN:
 813         case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
 814           gtk_entry_completion_set_popup_single_match (comp, FALSE);
 815           break;
 816         case GTK_FILE_CHOOSER_ACTION_SAVE:
 817         case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
 818           gtk_entry_completion_set_popup_single_match (comp, TRUE);
 819           break;
 820         }
 821
 822       if (chooser_entry->completion_store)
 823         _gtk_file_system_model_set_show_files (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 824                                                action == GTK_FILE_CHOOSER_ACTION_OPEN ||
 825                                                action == GTK_FILE_CHOOSER_ACTION_SAVE);
 826     }
 827 }
 828
 829
 830 /**
 831  * _gtk_file_chooser_entry_get_action:
 832  * @chooser_entry: a #GtkFileChooserEntry
 833  *
 834  * Gets the action for this entry.
 835  *
 836  * Returns: the action
 837  **/
 838 GtkFileChooserAction
 839 _gtk_file_chooser_entry_get_action (GtkFileChooserEntry *chooser_entry)
 840 {
 841   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry),
 842                         GTK_FILE_CHOOSER_ACTION_OPEN);
 843
 844   return chooser_entry->action;
 845 }
 846
 847 gboolean
 848 _gtk_file_chooser_entry_get_is_folder (GtkFileChooserEntry *chooser_entry,
 849                                        GFile               *file)
 850 {
 851   GtkTreeIter iter;
 852   GFileInfo *info;
 853
 854   if (chooser_entry->completion_store == NULL ||
 855       !_gtk_file_system_model_get_iter_for_file (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 856                                                  &iter,
 857                                                  file))
 858     return FALSE;
 859
 860   info = _gtk_file_system_model_get_info (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 861                                           &iter);
 862
 863   return _gtk_file_info_consider_as_directory (info);
 864 }
 865
 866
 867 /*
 868  * _gtk_file_chooser_entry_select_filename:
 869  * @chooser_entry: a #GtkFileChooserEntry
 870  *
 871  * Selects the filename (without the extension) for user edition.
 872  */
 873 void
 874 _gtk_file_chooser_entry_select_filename (GtkFileChooserEntry *chooser_entry)
 875 {
 876   const gchar *str, *ext;
 877   glong len = -1;
 878
 879   if (chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE)
 880     {
 881       str = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 882       ext = g_strrstr (str, ".");
 883
 884       if (ext)
 885        len = g_utf8_pointer_to_offset (str, ext);
 886     }
 887
 888   gtk_editable_select_region (GTK_EDITABLE (chooser_entry), 0, (gint) len);
 889 }
 890
 891 void
 892 _gtk_file_chooser_entry_set_local_only (GtkFileChooserEntry *chooser_entry,
 893                                         gboolean             local_only)
 894 {
 895   chooser_entry->local_only = local_only;
 896   refresh_current_folder_and_file_part (chooser_entry);
 897 }
 898
 899 gboolean
 900 _gtk_file_chooser_entry_get_local_only (GtkFileChooserEntry *chooser_entry)
 901 {
 902   return chooser_entry->local_only;
 903 }