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, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "config.h"
  20
  21 #include "gtkfilechooserentry.h"
  22
  23 #include <string.h>
  24
  25 #include "gtkcelllayout.h"
  26 #include "gtkcellrenderertext.h"
  27 #include "gtkentry.h"
  28 #include "gtkfilesystemmodel.h"
  29 #include "gtklabel.h"
  30 #include "gtkmain.h"
  31 #include "gtksizerequest.h"
  32 #include "gtkwindow.h"
  33 #include "gtkintl.h"
  34
  35 typedef struct _GtkFileChooserEntryClass GtkFileChooserEntryClass;
  36
  37 #define GTK_FILE_CHOOSER_ENTRY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
  38 #define GTK_IS_FILE_CHOOSER_ENTRY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY))
  39 #define GTK_FILE_CHOOSER_ENTRY_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
  40
  41 struct _GtkFileChooserEntryClass
  42 {
  43   GtkEntryClass parent_class;
  44 };
  45
  46 struct _GtkFileChooserEntry
  47 {
  48   GtkEntry parent_instance;
  49
  50   GtkFileChooserAction action;
  51
  52   GFile *base_folder;
  53   GFile *current_folder_file;
  54   gchar *dir_part;
  55   gchar *file_part;
  56
  57   GtkTreeModel *completion_store;
  58
  59   guint current_folder_loaded : 1;
  60   guint complete_on_load : 1;
  61   guint eat_tabs       : 1;
  62   guint local_only     : 1;
  63 };
  64
  65 enum
  66 {
  67   DISPLAY_NAME_COLUMN,
  68   FULL_PATH_COLUMN,
  69   N_COLUMNS
  70 };
  71
  72 static void     gtk_file_chooser_entry_finalize       (GObject          *object);
  73 static void     gtk_file_chooser_entry_dispose        (GObject          *object);
  74 static void     gtk_file_chooser_entry_grab_focus     (GtkWidget        *widget);
  75 static gboolean gtk_file_chooser_entry_tab_handler    (GtkWidget *widget,
  76                                                        GdkEventKey *event);
  77 static gboolean gtk_file_chooser_entry_focus_out_event (GtkWidget       *widget,
  78                                                         GdkEventFocus   *event);
  79
  80 #ifdef G_OS_WIN32
  81 static gint     insert_text_callback      (GtkFileChooserEntry *widget,
  82                                            const gchar         *new_text,
  83                                            gint                 new_text_length,
  84                                            gint                *position,
  85                                            gpointer             user_data);
  86 static void     delete_text_callback      (GtkFileChooserEntry *widget,
  87                                            gint                 start_pos,
  88                                            gint                 end_pos,
  89                                            gpointer             user_data);
  90 #endif
  91
  92 static gboolean match_selected_callback   (GtkEntryCompletion  *completion,
  93                                            GtkTreeModel        *model,
  94                                            GtkTreeIter         *iter,
  95                                            GtkFileChooserEntry *chooser_entry);
  96
  97 static void set_complete_on_load (GtkFileChooserEntry *chooser_entry,
  98                                   gboolean             complete_on_load);
  99 static void refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry);
 100 static void set_completion_folder (GtkFileChooserEntry *chooser_entry,
 101                                    GFile               *folder);
 102 static void finished_loading_cb (GtkFileSystemModel  *model,
 103                                  GError              *error,
 104                                  GtkFileChooserEntry *chooser_entry);
 105
 106 G_DEFINE_TYPE (GtkFileChooserEntry, _gtk_file_chooser_entry, GTK_TYPE_ENTRY)
 107
 108 static char *
 109 gtk_file_chooser_entry_get_completion_text (GtkFileChooserEntry *chooser_entry)
 110 {
 111   GtkEditable *editable = GTK_EDITABLE (chooser_entry);
 112   int start, end;
 113
 114   gtk_editable_get_selection_bounds (editable, &start, &end);
 115   return gtk_editable_get_chars (editable, 0, MIN (start, end));
 116 }
 117
 118 static void
 119 gtk_file_chooser_entry_dispatch_properties_changed (GObject     *object,
 120                                                     guint        n_pspecs,
 121                                                     GParamSpec **pspecs)
 122 {
 123   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 124   guint i;
 125
 126   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispatch_properties_changed (object, n_pspecs, pspecs);
 127
 128   /* What we are after: The text in front of the cursor was modified.
 129    * Unfortunately, there's no other way to catch this. */
 130
 131   for (i = 0; i < n_pspecs; i++)
 132     {
 133       if (pspecs[i]->name == I_("cursor-position") ||
 134           pspecs[i]->name == I_("selection-bound") ||
 135           pspecs[i]->name == I_("text"))
 136         {
 137           set_complete_on_load (chooser_entry, FALSE);
 138           refresh_current_folder_and_file_part (chooser_entry);
 139           break;
 140         }
 141     }
 142 }
 143
 144 static void
 145 _gtk_file_chooser_entry_class_init (GtkFileChooserEntryClass *class)
 146 {
 147   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 148   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 149
 150   gobject_class->finalize = gtk_file_chooser_entry_finalize;
 151   gobject_class->dispose = gtk_file_chooser_entry_dispose;
 152   gobject_class->dispatch_properties_changed = gtk_file_chooser_entry_dispatch_properties_changed;
 153
 154   widget_class->grab_focus = gtk_file_chooser_entry_grab_focus;
 155   widget_class->focus_out_event = gtk_file_chooser_entry_focus_out_event;
 156 }
 157
 158 static void
 159 _gtk_file_chooser_entry_init (GtkFileChooserEntry *chooser_entry)
 160 {
 161   GtkEntryCompletion *comp;
 162   GtkCellRenderer *cell;
 163
 164   chooser_entry->local_only = TRUE;
 165
 166   g_object_set (chooser_entry, "truncate-multiline", TRUE, NULL);
 167
 168   comp = gtk_entry_completion_new ();
 169   gtk_entry_completion_set_popup_single_match (comp, FALSE);
 170   gtk_entry_completion_set_minimum_key_length (comp, 0);
 171   /* see docs for gtk_entry_completion_set_text_column() */
 172   g_object_set (comp, "text-column", FULL_PATH_COLUMN, NULL);
 173
 174   /* Need a match func here or entry completion uses a wrong one.
 175    * We do our own filtering after all. */
 176   gtk_entry_completion_set_match_func (comp,
 177                                        (GtkEntryCompletionMatchFunc) gtk_true,
 178                                        chooser_entry,
 179                                        NULL);
 180
 181   cell = gtk_cell_renderer_text_new ();
 182   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (comp),
 183                               cell, TRUE);
 184   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (comp),
 185                                  cell,
 186                                  "text", DISPLAY_NAME_COLUMN);
 187
 188   g_signal_connect (comp, "match-selected",
 189                     G_CALLBACK (match_selected_callback), chooser_entry);
 190
 191   gtk_entry_set_completion (GTK_ENTRY (chooser_entry), comp);
 192   g_object_unref (comp);
 193   /* NB: This needs to happen after the completion is set, so this handler
 194    * runs before the handler installed by entrycompletion */
 195   g_signal_connect (chooser_entry, "key-press-event",
 196                     G_CALLBACK (gtk_file_chooser_entry_tab_handler), NULL);
 197
 198 #ifdef G_OS_WIN32
 199   g_signal_connect (chooser_entry, "insert-text",
 200                     G_CALLBACK (insert_text_callback), NULL);
 201   g_signal_connect (chooser_entry, "delete-text",
 202                     G_CALLBACK (delete_text_callback), NULL);
 203 #endif
 204 }
 205
 206 static void
 207 gtk_file_chooser_entry_finalize (GObject *object)
 208 {
 209   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 210
 211   if (chooser_entry->base_folder)
 212     g_object_unref (chooser_entry->base_folder);
 213
 214   if (chooser_entry->current_folder_file)
 215     g_object_unref (chooser_entry->current_folder_file);
 216
 217   g_free (chooser_entry->dir_part);
 218   g_free (chooser_entry->file_part);
 219
 220   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->finalize (object);
 221 }
 222
 223 static void
 224 gtk_file_chooser_entry_dispose (GObject *object)
 225 {
 226   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
 227
 228   set_completion_folder (chooser_entry, NULL);
 229
 230   G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispose (object);
 231 }
 232
 233 /* Match functions for the GtkEntryCompletion */
 234 static gboolean
 235 match_selected_callback (GtkEntryCompletion  *completion,
 236                          GtkTreeModel        *model,
 237                          GtkTreeIter         *iter,
 238                          GtkFileChooserEntry *chooser_entry)
 239 {
 240   char *path;
 241
 242   gtk_tree_model_get (model, iter,
 243                       FULL_PATH_COLUMN, &path,
 244                       -1);
 245
 246   gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
 247                             0,
 248                             gtk_editable_get_position (GTK_EDITABLE (chooser_entry)));
 249   gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
 250                             path,
 251                             0,
 252                             NULL);
 253
 254   g_free (path);
 255
 256   return TRUE;
 257 }
 258
 259 static void
 260 set_complete_on_load (GtkFileChooserEntry *chooser_entry,
 261                       gboolean             complete_on_load)
 262 {
 263   /* a completion was triggered, but we couldn't do it.
 264    * So no text was inserted when pressing tab, so we beep */
 265   if (chooser_entry->complete_on_load && !complete_on_load)
 266     gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 267
 268   chooser_entry->complete_on_load = complete_on_load;
 269 }
 270
 271 static gboolean
 272 is_valid_scheme_character (char c)
 273 {
 274   return g_ascii_isalnum (c) || c == '+' || c == '-' || c == '.';
 275 }
 276
 277 static gboolean
 278 has_uri_scheme (const char *str)
 279 {
 280   const char *p;
 281
 282   p = str;
 283
 284   if (!is_valid_scheme_character (*p))
 285     return FALSE;
 286
 287   do
 288     p++;
 289   while (is_valid_scheme_character (*p));
 290
 291   return (strncmp (p, "://", 3) == 0);
 292 }
 293
 294 static GFile *
 295 gtk_file_chooser_get_file_for_text (GtkFileChooserEntry *chooser_entry,
 296                                     const gchar         *str)
 297 {
 298   GFile *file;
 299
 300   if (str[0] == '~' || g_path_is_absolute (str) || has_uri_scheme (str))
 301     file = g_file_parse_name (str);
 302   else if (chooser_entry->base_folder != NULL)
 303     file = g_file_resolve_relative_path (chooser_entry->base_folder, str);
 304   else
 305     file = NULL;
 306
 307   return file;
 308 }
 309
 310 static GFile *
 311 gtk_file_chooser_get_directory_for_text (GtkFileChooserEntry *chooser_entry,
 312                                          const char *         text)
 313 {
 314   GFile *file, *parent;
 315
 316   file = gtk_file_chooser_get_file_for_text (chooser_entry, text);
 317
 318   if (file == NULL)
 319     return NULL;
 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_tab_handler (GtkWidget *widget,
 383                                     GdkEventKey *event)
 384 {
 385   GtkFileChooserEntry *chooser_entry;
 386   GtkEditable *editable;
 387   GdkModifierType state;
 388   gint start, end;
 389
 390   chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 391   editable = GTK_EDITABLE (widget);
 392
 393   if (!chooser_entry->eat_tabs)
 394     return FALSE;
 395
 396   if (event->keyval != GDK_KEY_Tab)
 397     return FALSE;
 398
 399   if (gtk_get_current_event_state (&state) &&
 400       (state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
 401     return FALSE;
 402
 403   /* This is a bit evil -- it makes Tab never leave the entry. It basically
 404    * makes it 'safe' for people to hit. */
 405   gtk_editable_get_selection_bounds (editable, &start, &end);
 406
 407   if (start != end)
 408     gtk_editable_set_position (editable, MAX (start, end));
 409   else
 410     start_explicit_completion (chooser_entry);
 411
 412   return TRUE;
 413 }
 414
 415 static gboolean
 416 gtk_file_chooser_entry_focus_out_event (GtkWidget     *widget,
 417                                         GdkEventFocus *event)
 418 {
 419   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 420
 421   set_complete_on_load (chooser_entry, FALSE);
 422
 423   return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->focus_out_event (widget, event);
 424 }
 425
 426 static void
 427 update_inline_completion (GtkFileChooserEntry *chooser_entry)
 428 {
 429   GtkEntryCompletion *completion = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 430
 431   if (!chooser_entry->current_folder_loaded)
 432     {
 433       gtk_entry_completion_set_inline_completion (completion, FALSE);
 434       return;
 435     }
 436
 437   switch (chooser_entry->action)
 438     {
 439     case GTK_FILE_CHOOSER_ACTION_OPEN:
 440     case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
 441       gtk_entry_completion_set_inline_completion (completion, TRUE);
 442       break;
 443     case GTK_FILE_CHOOSER_ACTION_SAVE:
 444     case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
 445       gtk_entry_completion_set_inline_completion (completion, FALSE);
 446       break;
 447     }
 448 }
 449
 450 static void
 451 discard_completion_store (GtkFileChooserEntry *chooser_entry)
 452 {
 453   if (!chooser_entry->completion_store)
 454     return;
 455
 456   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), NULL);
 457   update_inline_completion (chooser_entry);
 458   g_object_unref (chooser_entry->completion_store);
 459   chooser_entry->completion_store = NULL;
 460 }
 461
 462 static gboolean
 463 completion_store_set (GtkFileSystemModel  *model,
 464                       GFile               *file,
 465                       GFileInfo           *info,
 466                       int                  column,
 467                       GValue              *value,
 468                       gpointer             data)
 469 {
 470   GtkFileChooserEntry *chooser_entry = data;
 471
 472   const char *prefix = "";
 473   const char *suffix = "";
 474
 475   switch (column)
 476     {
 477     case FULL_PATH_COLUMN:
 478       prefix = chooser_entry->dir_part;
 479       /* fall through */
 480     case DISPLAY_NAME_COLUMN:
 481       if (_gtk_file_info_consider_as_directory (info))
 482         suffix = G_DIR_SEPARATOR_S;
 483
 484       g_value_take_string (value, g_strconcat (
 485               prefix,
 486               g_file_info_get_display_name (info),
 487               suffix,
 488               NULL));
 489       break;
 490     default:
 491       g_assert_not_reached ();
 492       break;
 493     }
 494
 495   return TRUE;
 496 }
 497
 498 /* Fills the completion store from the contents of the current folder */
 499 static void
 500 populate_completion_store (GtkFileChooserEntry *chooser_entry)
 501 {
 502   chooser_entry->completion_store = GTK_TREE_MODEL (
 503       _gtk_file_system_model_new_for_directory (chooser_entry->current_folder_file,
 504                                                 "standard::name,standard::display-name,standard::type",
 505                                                 completion_store_set,
 506                                                 chooser_entry,
 507                                                 N_COLUMNS,
 508                                                 G_TYPE_STRING,
 509                                                 G_TYPE_STRING));
 510   g_signal_connect (chooser_entry->completion_store, "finished-loading",
 511                     G_CALLBACK (finished_loading_cb), chooser_entry);
 512
 513   _gtk_file_system_model_set_filter_folders (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 514                                              TRUE);
 515   _gtk_file_system_model_set_show_files (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 516                                          chooser_entry->action == GTK_FILE_CHOOSER_ACTION_OPEN ||
 517                                          chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE);
 518   gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (chooser_entry->completion_store),
 519                                         DISPLAY_NAME_COLUMN, GTK_SORT_ASCENDING);
 520
 521   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)),
 522                                   chooser_entry->completion_store);
 523 }
 524
 525 /* Callback when the current folder finishes loading */
 526 static void
 527 finished_loading_cb (GtkFileSystemModel  *model,
 528                      GError              *error,
 529                      GtkFileChooserEntry *chooser_entry)
 530 {
 531   GtkEntryCompletion *completion;
 532
 533   chooser_entry->current_folder_loaded = TRUE;
 534
 535   if (error)
 536     {
 537       discard_completion_store (chooser_entry);
 538       set_complete_on_load (chooser_entry, FALSE);
 539       return;
 540     }
 541
 542   if (chooser_entry->complete_on_load)
 543     explicitly_complete (chooser_entry);
 544
 545   gtk_widget_set_tooltip_text (GTK_WIDGET (chooser_entry), NULL);
 546
 547   completion = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 548   update_inline_completion (chooser_entry);
 549   gtk_entry_completion_complete (completion);
 550   gtk_entry_completion_insert_prefix (completion);
 551 }
 552
 553 static void
 554 set_completion_folder (GtkFileChooserEntry *chooser_entry,
 555                        GFile               *folder_file)
 556 {
 557   if (folder_file &&
 558       chooser_entry->local_only
 559       && !g_file_is_native (folder_file))
 560     folder_file = NULL;
 561
 562   if ((chooser_entry->current_folder_file
 563        && folder_file
 564        && g_file_equal (folder_file, chooser_entry->current_folder_file))
 565       || chooser_entry->current_folder_file == folder_file)
 566     return;
 567
 568   if (chooser_entry->current_folder_file)
 569     {
 570       g_object_unref (chooser_entry->current_folder_file);
 571       chooser_entry->current_folder_file = NULL;
 572     }
 573
 574   chooser_entry->current_folder_loaded = FALSE;
 575
 576   discard_completion_store (chooser_entry);
 577
 578   if (folder_file)
 579     {
 580       chooser_entry->current_folder_file = g_object_ref (folder_file);
 581       populate_completion_store (chooser_entry);
 582     }
 583 }
 584
 585 static void
 586 refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry)
 587 {
 588   GFile *folder_file;
 589   char *text, *last_slash, *old_file_part;
 590
 591   old_file_part = chooser_entry->file_part;
 592   g_free (chooser_entry->dir_part);
 593
 594   text = gtk_file_chooser_entry_get_completion_text (chooser_entry);
 595
 596   last_slash = strrchr (text, G_DIR_SEPARATOR);
 597   if (last_slash)
 598     {
 599       chooser_entry->dir_part = g_strndup (text, last_slash - text + 1);
 600       chooser_entry->file_part = g_strdup (last_slash + 1);
 601     }
 602   else
 603     {
 604       chooser_entry->dir_part = g_strdup ("");
 605       chooser_entry->file_part = g_strdup (text);
 606     }
 607
 608   folder_file = gtk_file_chooser_get_directory_for_text (chooser_entry, text);
 609   set_completion_folder (chooser_entry, folder_file);
 610   if (folder_file)
 611     g_object_unref (folder_file);
 612
 613   if (chooser_entry->completion_store &&
 614       (g_strcmp0 (old_file_part, chooser_entry->file_part) != 0))
 615     {
 616       GtkFileFilter *filter;
 617       char *pattern;
 618
 619       filter = gtk_file_filter_new ();
 620       pattern = g_strconcat (chooser_entry->file_part, "*", NULL);
 621       gtk_file_filter_add_pattern (filter, pattern);
 622
 623       _gtk_file_system_model_set_filter (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 624                                          filter);
 625
 626       g_free (pattern);
 627       g_object_unref (filter);
 628     }
 629
 630   g_free (text);
 631   g_free (old_file_part);
 632 }
 633
 634 #ifdef G_OS_WIN32
 635 static gint
 636 insert_text_callback (GtkFileChooserEntry *chooser_entry,
 637                       const gchar         *new_text,
 638                       gint                 new_text_length,
 639                       gint                *position,
 640                       gpointer             user_data)
 641 {
 642   const gchar *colon = memchr (new_text, ':', new_text_length);
 643   gint i;
 644
 645   /* Disallow these characters altogether */
 646   for (i = 0; i < new_text_length; i++)
 647     {
 648       if (new_text[i] == '<' ||
 649           new_text[i] == '>' ||
 650           new_text[i] == '"' ||
 651           new_text[i] == '|' ||
 652           new_text[i] == '*' ||
 653           new_text[i] == '?')
 654         break;
 655     }
 656
 657   if (i < new_text_length ||
 658       /* Disallow entering text that would cause a colon to be anywhere except
 659        * after a drive letter.
 660        */
 661       (colon != NULL &&
 662        *position + (colon - new_text) != 1) ||
 663       (new_text_length > 0 &&
 664        *position <= 1 &&
 665        gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 666        gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':'))
 667     {
 668       gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 669       g_signal_stop_emission_by_name (chooser_entry, "insert_text");
 670       return FALSE;
 671     }
 672
 673   return TRUE;
 674 }
 675
 676 static void
 677 delete_text_callback (GtkFileChooserEntry *chooser_entry,
 678                       gint                 start_pos,
 679                       gint                 end_pos,
 680                       gpointer             user_data)
 681 {
 682   /* If deleting a drive letter, delete the colon, too */
 683   if (start_pos == 0 && end_pos == 1 &&
 684       gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 685       gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':')
 686     {
 687       g_signal_handlers_block_by_func (chooser_entry,
 688                                        G_CALLBACK (delete_text_callback),
 689                                        user_data);
 690       gtk_editable_delete_text (GTK_EDITABLE (chooser_entry), 0, 1);
 691       g_signal_handlers_unblock_by_func (chooser_entry,
 692                                          G_CALLBACK (delete_text_callback),
 693                                          user_data);
 694     }
 695 }
 696 #endif
 697
 698 /**
 699  * _gtk_file_chooser_entry_new:
 700  * @eat_tabs: If %FALSE, allow focus navigation with the tab key.
 701  *
 702  * Creates a new #GtkFileChooserEntry object. #GtkFileChooserEntry
 703  * is an internal implementation widget for the GTK+ file chooser
 704  * which is an entry with completion with respect to a
 705  * #GtkFileSystem object.
 706  *
 707  * Return value: the newly created #GtkFileChooserEntry
 708  **/
 709 GtkWidget *
 710 _gtk_file_chooser_entry_new (gboolean       eat_tabs)
 711 {
 712   GtkFileChooserEntry *chooser_entry;
 713
 714   chooser_entry = g_object_new (GTK_TYPE_FILE_CHOOSER_ENTRY, NULL);
 715   chooser_entry->eat_tabs = (eat_tabs != FALSE);
 716
 717   return GTK_WIDGET (chooser_entry);
 718 }
 719
 720 /**
 721  * _gtk_file_chooser_entry_set_base_folder:
 722  * @chooser_entry: a #GtkFileChooserEntry
 723  * @file: file for a folder in the chooser entries current file system.
 724  *
 725  * Sets the folder with respect to which completions occur.
 726  **/
 727 void
 728 _gtk_file_chooser_entry_set_base_folder (GtkFileChooserEntry *chooser_entry,
 729                                          GFile               *file)
 730 {
 731   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
 732   g_return_if_fail (file == NULL || G_IS_FILE (file));
 733
 734   if (chooser_entry->base_folder == file ||
 735       (file != NULL && chooser_entry->base_folder != NULL
 736        && g_file_equal (chooser_entry->base_folder, file)))
 737     return;
 738
 739   if (file)
 740     g_object_ref (file);
 741
 742   if (chooser_entry->base_folder)
 743     g_object_unref (chooser_entry->base_folder);
 744
 745   chooser_entry->base_folder = file;
 746
 747   refresh_current_folder_and_file_part (chooser_entry);
 748 }
 749
 750 /**
 751  * _gtk_file_chooser_entry_get_current_folder:
 752  * @chooser_entry: a #GtkFileChooserEntry
 753  *
 754  * Gets the current folder for the #GtkFileChooserEntry. If the
 755  * user has only entered a filename, this will be in the base folder
 756  * (see _gtk_file_chooser_entry_set_base_folder()), but if the
 757  * user has entered a relative or absolute path, then it will
 758  * be different.  If the user has entered unparsable text, or text which
 759  * the entry cannot handle, this will return %NULL.
 760  *
 761  * Return value: the file for the current folder - you must g_object_unref()
 762  *   the value after use.
 763  **/
 764 GFile *
 765 _gtk_file_chooser_entry_get_current_folder (GtkFileChooserEntry *chooser_entry)
 766 {
 767   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 768
 769   return gtk_file_chooser_get_directory_for_text (chooser_entry,
 770                                                   gtk_entry_get_text (GTK_ENTRY (chooser_entry)));
 771 }
 772
 773 /**
 774  * _gtk_file_chooser_entry_get_file_part:
 775  * @chooser_entry: a #GtkFileChooserEntry
 776  *
 777  * Gets the non-folder portion of whatever the user has entered
 778  * into the file selector. What is returned is a UTF-8 string,
 779  * and if a filename path is needed, g_file_get_child_for_display_name()
 780  * must be used
 781   *
 782  * Return value: the entered filename - this value is owned by the
 783  *  chooser entry and must not be modified or freed.
 784  **/
 785 const gchar *
 786 _gtk_file_chooser_entry_get_file_part (GtkFileChooserEntry *chooser_entry)
 787 {
 788   const char *last_slash, *text;
 789
 790   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 791
 792   text = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 793   last_slash = strrchr (text, G_DIR_SEPARATOR);
 794   if (last_slash)
 795     return last_slash + 1;
 796   else
 797     return text;
 798 }
 799
 800 /**
 801  * _gtk_file_chooser_entry_set_action:
 802  * @chooser_entry: a #GtkFileChooserEntry
 803  * @action: the action which is performed by the file selector using this entry
 804  *
 805  * Sets action which is performed by the file selector using this entry.
 806  * The #GtkFileChooserEntry will use different completion strategies for
 807  * different actions.
 808  **/
 809 void
 810 _gtk_file_chooser_entry_set_action (GtkFileChooserEntry *chooser_entry,
 811                                     GtkFileChooserAction action)
 812 {
 813   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
 814
 815   if (chooser_entry->action != action)
 816     {
 817       GtkEntryCompletion *comp;
 818
 819       chooser_entry->action = action;
 820
 821       comp = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 822
 823       /* FIXME: do we need to actually set the following? */
 824
 825       switch (action)
 826         {
 827         case GTK_FILE_CHOOSER_ACTION_OPEN:
 828         case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
 829           gtk_entry_completion_set_popup_single_match (comp, FALSE);
 830           break;
 831         case GTK_FILE_CHOOSER_ACTION_SAVE:
 832         case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
 833           gtk_entry_completion_set_popup_single_match (comp, TRUE);
 834           break;
 835         }
 836
 837       if (chooser_entry->completion_store)
 838         _gtk_file_system_model_set_show_files (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 839                                                action == GTK_FILE_CHOOSER_ACTION_OPEN ||
 840                                                action == GTK_FILE_CHOOSER_ACTION_SAVE);
 841
 842       update_inline_completion (chooser_entry);
 843     }
 844 }
 845
 846
 847 /**
 848  * _gtk_file_chooser_entry_get_action:
 849  * @chooser_entry: a #GtkFileChooserEntry
 850  *
 851  * Gets the action for this entry.
 852  *
 853  * Returns: the action
 854  **/
 855 GtkFileChooserAction
 856 _gtk_file_chooser_entry_get_action (GtkFileChooserEntry *chooser_entry)
 857 {
 858   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry),
 859                         GTK_FILE_CHOOSER_ACTION_OPEN);
 860
 861   return chooser_entry->action;
 862 }
 863
 864 gboolean
 865 _gtk_file_chooser_entry_get_is_folder (GtkFileChooserEntry *chooser_entry,
 866                                        GFile               *file)
 867 {
 868   GtkTreeIter iter;
 869   GFileInfo *info;
 870
 871   if (chooser_entry->completion_store == NULL ||
 872       !_gtk_file_system_model_get_iter_for_file (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 873                                                  &iter,
 874                                                  file))
 875     return FALSE;
 876
 877   info = _gtk_file_system_model_get_info (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 878                                           &iter);
 879
 880   return _gtk_file_info_consider_as_directory (info);
 881 }
 882
 883
 884 /*
 885  * _gtk_file_chooser_entry_select_filename:
 886  * @chooser_entry: a #GtkFileChooserEntry
 887  *
 888  * Selects the filename (without the extension) for user edition.
 889  */
 890 void
 891 _gtk_file_chooser_entry_select_filename (GtkFileChooserEntry *chooser_entry)
 892 {
 893   const gchar *str, *ext;
 894   glong len = -1;
 895
 896   if (chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE)
 897     {
 898       str = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 899       ext = g_strrstr (str, ".");
 900
 901       if (ext)
 902        len = g_utf8_pointer_to_offset (str, ext);
 903     }
 904
 905   gtk_editable_select_region (GTK_EDITABLE (chooser_entry), 0, (gint) len);
 906 }
 907
 908 void
 909 _gtk_file_chooser_entry_set_local_only (GtkFileChooserEntry *chooser_entry,
 910                                         gboolean             local_only)
 911 {
 912   chooser_entry->local_only = local_only;
 913   refresh_current_folder_and_file_part (chooser_entry);
 914 }
 915
 916 gboolean
 917 _gtk_file_chooser_entry_get_local_only (GtkFileChooserEntry *chooser_entry)
 918 {
 919   return chooser_entry->local_only;
 920 }