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   gint pos;
 242
 243   gtk_tree_model_get (model, iter,
 244                       FULL_PATH_COLUMN, &path,
 245                       -1);
 246
 247   gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
 248                             0,
 249                             gtk_editable_get_position (GTK_EDITABLE (chooser_entry)));
 250   pos = 0;
 251   gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
 252                             path,
 253                             -1,
 254                             &pos);
 255
 256   g_free (path);
 257
 258   return TRUE;
 259 }
 260
 261 static void
 262 set_complete_on_load (GtkFileChooserEntry *chooser_entry,
 263                       gboolean             complete_on_load)
 264 {
 265   /* a completion was triggered, but we couldn't do it.
 266    * So no text was inserted when pressing tab, so we beep */
 267   if (chooser_entry->complete_on_load && !complete_on_load)
 268     gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 269
 270   chooser_entry->complete_on_load = complete_on_load;
 271 }
 272
 273 static gboolean
 274 is_valid_scheme_character (char c)
 275 {
 276   return g_ascii_isalnum (c) || c == '+' || c == '-' || c == '.';
 277 }
 278
 279 static gboolean
 280 has_uri_scheme (const char *str)
 281 {
 282   const char *p;
 283
 284   p = str;
 285
 286   if (!is_valid_scheme_character (*p))
 287     return FALSE;
 288
 289   do
 290     p++;
 291   while (is_valid_scheme_character (*p));
 292
 293   return (strncmp (p, "://", 3) == 0);
 294 }
 295
 296 static GFile *
 297 gtk_file_chooser_get_file_for_text (GtkFileChooserEntry *chooser_entry,
 298                                     const gchar         *str)
 299 {
 300   GFile *file;
 301
 302   if (str[0] == '~' || g_path_is_absolute (str) || has_uri_scheme (str))
 303     file = g_file_parse_name (str);
 304   else if (chooser_entry->base_folder != NULL)
 305     file = g_file_resolve_relative_path (chooser_entry->base_folder, str);
 306   else
 307     file = NULL;
 308
 309   return file;
 310 }
 311
 312 static GFile *
 313 gtk_file_chooser_get_directory_for_text (GtkFileChooserEntry *chooser_entry,
 314                                          const char *         text)
 315 {
 316   GFile *file, *parent;
 317
 318   file = gtk_file_chooser_get_file_for_text (chooser_entry, text);
 319
 320   if (file == NULL)
 321     return NULL;
 322
 323   if (text[0] == 0 || text[strlen (text) - 1] == G_DIR_SEPARATOR)
 324     return file;
 325
 326   parent = g_file_get_parent (file);
 327   g_object_unref (file);
 328
 329   return parent;
 330 }
 331
 332 /* Finds a common prefix based on the contents of the entry
 333  * and mandatorily appends it
 334  */
 335 static void
 336 explicitly_complete (GtkFileChooserEntry *chooser_entry)
 337 {
 338   chooser_entry->complete_on_load = FALSE;
 339
 340   if (chooser_entry->completion_store)
 341     {
 342       char *completion, *text;
 343       gsize completion_len, text_len;
 344
 345       text = gtk_file_chooser_entry_get_completion_text (chooser_entry);
 346       text_len = strlen (text);
 347       completion = gtk_entry_completion_compute_prefix (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), text);
 348       completion_len = completion ? strlen (completion) : 0;
 349
 350       if (completion_len > text_len)
 351         {
 352           GtkEditable *editable = GTK_EDITABLE (chooser_entry);
 353           int pos = gtk_editable_get_position (editable);
 354
 355           gtk_editable_insert_text (editable,
 356                                     completion + text_len,
 357                                     completion_len - text_len,
 358                                     &pos);
 359           gtk_editable_set_position (editable, pos);
 360           return;
 361         }
 362     }
 363
 364   gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 365 }
 366
 367 static void
 368 gtk_file_chooser_entry_grab_focus (GtkWidget *widget)
 369 {
 370   GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->grab_focus (widget);
 371   _gtk_file_chooser_entry_select_filename (GTK_FILE_CHOOSER_ENTRY (widget));
 372 }
 373
 374 static void
 375 start_explicit_completion (GtkFileChooserEntry *chooser_entry)
 376 {
 377   if (chooser_entry->current_folder_loaded)
 378     explicitly_complete (chooser_entry);
 379   else
 380     set_complete_on_load (chooser_entry, TRUE);
 381 }
 382
 383 static gboolean
 384 gtk_file_chooser_entry_tab_handler (GtkWidget *widget,
 385                                     GdkEventKey *event)
 386 {
 387   GtkFileChooserEntry *chooser_entry;
 388   GtkEditable *editable;
 389   GdkModifierType state;
 390   gint start, end;
 391
 392   chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 393   editable = GTK_EDITABLE (widget);
 394
 395   if (!chooser_entry->eat_tabs)
 396     return FALSE;
 397
 398   if (event->keyval != GDK_KEY_Tab)
 399     return FALSE;
 400
 401   if (gtk_get_current_event_state (&state) &&
 402       (state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
 403     return FALSE;
 404
 405   /* This is a bit evil -- it makes Tab never leave the entry. It basically
 406    * makes it 'safe' for people to hit. */
 407   gtk_editable_get_selection_bounds (editable, &start, &end);
 408
 409   if (start != end)
 410     gtk_editable_set_position (editable, MAX (start, end));
 411   else
 412     start_explicit_completion (chooser_entry);
 413
 414   return TRUE;
 415 }
 416
 417 static gboolean
 418 gtk_file_chooser_entry_focus_out_event (GtkWidget     *widget,
 419                                         GdkEventFocus *event)
 420 {
 421   GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
 422
 423   set_complete_on_load (chooser_entry, FALSE);
 424
 425   return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->focus_out_event (widget, event);
 426 }
 427
 428 static void
 429 update_inline_completion (GtkFileChooserEntry *chooser_entry)
 430 {
 431   GtkEntryCompletion *completion = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 432
 433   if (!chooser_entry->current_folder_loaded)
 434     {
 435       gtk_entry_completion_set_inline_completion (completion, FALSE);
 436       return;
 437     }
 438
 439   switch (chooser_entry->action)
 440     {
 441     case GTK_FILE_CHOOSER_ACTION_OPEN:
 442     case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
 443       gtk_entry_completion_set_inline_completion (completion, TRUE);
 444       break;
 445     case GTK_FILE_CHOOSER_ACTION_SAVE:
 446     case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
 447       gtk_entry_completion_set_inline_completion (completion, FALSE);
 448       break;
 449     }
 450 }
 451
 452 static void
 453 discard_completion_store (GtkFileChooserEntry *chooser_entry)
 454 {
 455   if (!chooser_entry->completion_store)
 456     return;
 457
 458   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), NULL);
 459   update_inline_completion (chooser_entry);
 460   g_object_unref (chooser_entry->completion_store);
 461   chooser_entry->completion_store = NULL;
 462 }
 463
 464 static gboolean
 465 completion_store_set (GtkFileSystemModel  *model,
 466                       GFile               *file,
 467                       GFileInfo           *info,
 468                       int                  column,
 469                       GValue              *value,
 470                       gpointer             data)
 471 {
 472   GtkFileChooserEntry *chooser_entry = data;
 473
 474   const char *prefix = "";
 475   const char *suffix = "";
 476
 477   switch (column)
 478     {
 479     case FULL_PATH_COLUMN:
 480       prefix = chooser_entry->dir_part;
 481       /* fall through */
 482     case DISPLAY_NAME_COLUMN:
 483       if (_gtk_file_info_consider_as_directory (info))
 484         suffix = G_DIR_SEPARATOR_S;
 485
 486       g_value_take_string (value, g_strconcat (
 487               prefix,
 488               g_file_info_get_display_name (info),
 489               suffix,
 490               NULL));
 491       break;
 492     default:
 493       g_assert_not_reached ();
 494       break;
 495     }
 496
 497   return TRUE;
 498 }
 499
 500 /* Fills the completion store from the contents of the current folder */
 501 static void
 502 populate_completion_store (GtkFileChooserEntry *chooser_entry)
 503 {
 504   chooser_entry->completion_store = GTK_TREE_MODEL (
 505       _gtk_file_system_model_new_for_directory (chooser_entry->current_folder_file,
 506                                                 "standard::name,standard::display-name,standard::type",
 507                                                 completion_store_set,
 508                                                 chooser_entry,
 509                                                 N_COLUMNS,
 510                                                 G_TYPE_STRING,
 511                                                 G_TYPE_STRING));
 512   g_signal_connect (chooser_entry->completion_store, "finished-loading",
 513                     G_CALLBACK (finished_loading_cb), chooser_entry);
 514
 515   _gtk_file_system_model_set_filter_folders (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 516                                              TRUE);
 517   _gtk_file_system_model_set_show_files (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 518                                          chooser_entry->action == GTK_FILE_CHOOSER_ACTION_OPEN ||
 519                                          chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE);
 520   gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (chooser_entry->completion_store),
 521                                         DISPLAY_NAME_COLUMN, GTK_SORT_ASCENDING);
 522
 523   gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)),
 524                                   chooser_entry->completion_store);
 525 }
 526
 527 /* Callback when the current folder finishes loading */
 528 static void
 529 finished_loading_cb (GtkFileSystemModel  *model,
 530                      GError              *error,
 531                      GtkFileChooserEntry *chooser_entry)
 532 {
 533   GtkEntryCompletion *completion;
 534
 535   chooser_entry->current_folder_loaded = TRUE;
 536
 537   if (error)
 538     {
 539       discard_completion_store (chooser_entry);
 540       set_complete_on_load (chooser_entry, FALSE);
 541       return;
 542     }
 543
 544   if (chooser_entry->complete_on_load)
 545     explicitly_complete (chooser_entry);
 546
 547   gtk_widget_set_tooltip_text (GTK_WIDGET (chooser_entry), NULL);
 548
 549   completion = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 550   update_inline_completion (chooser_entry);
 551   gtk_entry_completion_complete (completion);
 552   gtk_entry_completion_insert_prefix (completion);
 553 }
 554
 555 static void
 556 set_completion_folder (GtkFileChooserEntry *chooser_entry,
 557                        GFile               *folder_file)
 558 {
 559   if (folder_file &&
 560       chooser_entry->local_only
 561       && !g_file_is_native (folder_file))
 562     folder_file = NULL;
 563
 564   if ((chooser_entry->current_folder_file
 565        && folder_file
 566        && g_file_equal (folder_file, chooser_entry->current_folder_file))
 567       || chooser_entry->current_folder_file == folder_file)
 568     return;
 569
 570   if (chooser_entry->current_folder_file)
 571     {
 572       g_object_unref (chooser_entry->current_folder_file);
 573       chooser_entry->current_folder_file = NULL;
 574     }
 575
 576   chooser_entry->current_folder_loaded = FALSE;
 577
 578   discard_completion_store (chooser_entry);
 579
 580   if (folder_file)
 581     {
 582       chooser_entry->current_folder_file = g_object_ref (folder_file);
 583       populate_completion_store (chooser_entry);
 584     }
 585 }
 586
 587 static void
 588 refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry)
 589 {
 590   GFile *folder_file;
 591   char *text, *last_slash, *old_file_part;
 592
 593   old_file_part = chooser_entry->file_part;
 594   g_free (chooser_entry->dir_part);
 595
 596   text = gtk_file_chooser_entry_get_completion_text (chooser_entry);
 597
 598   last_slash = strrchr (text, G_DIR_SEPARATOR);
 599   if (last_slash)
 600     {
 601       chooser_entry->dir_part = g_strndup (text, last_slash - text + 1);
 602       chooser_entry->file_part = g_strdup (last_slash + 1);
 603     }
 604   else
 605     {
 606       chooser_entry->dir_part = g_strdup ("");
 607       chooser_entry->file_part = g_strdup (text);
 608     }
 609
 610   folder_file = gtk_file_chooser_get_directory_for_text (chooser_entry, text);
 611   set_completion_folder (chooser_entry, folder_file);
 612   if (folder_file)
 613     g_object_unref (folder_file);
 614
 615   if (chooser_entry->completion_store &&
 616       (g_strcmp0 (old_file_part, chooser_entry->file_part) != 0))
 617     {
 618       GtkFileFilter *filter;
 619       char *pattern;
 620
 621       filter = gtk_file_filter_new ();
 622       pattern = g_strconcat (chooser_entry->file_part, "*", NULL);
 623       gtk_file_filter_add_pattern (filter, pattern);
 624
 625       _gtk_file_system_model_set_filter (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 626                                          filter);
 627
 628       g_free (pattern);
 629       g_object_unref (filter);
 630     }
 631
 632   g_free (text);
 633   g_free (old_file_part);
 634 }
 635
 636 #ifdef G_OS_WIN32
 637 static gint
 638 insert_text_callback (GtkFileChooserEntry *chooser_entry,
 639                       const gchar         *new_text,
 640                       gint                 new_text_length,
 641                       gint                *position,
 642                       gpointer             user_data)
 643 {
 644   const gchar *colon = memchr (new_text, ':', new_text_length);
 645   gint i;
 646
 647   /* Disallow these characters altogether */
 648   for (i = 0; i < new_text_length; i++)
 649     {
 650       if (new_text[i] == '<' ||
 651           new_text[i] == '>' ||
 652           new_text[i] == '"' ||
 653           new_text[i] == '|' ||
 654           new_text[i] == '*' ||
 655           new_text[i] == '?')
 656         break;
 657     }
 658
 659   if (i < new_text_length ||
 660       /* Disallow entering text that would cause a colon to be anywhere except
 661        * after a drive letter.
 662        */
 663       (colon != NULL &&
 664        *position + (colon - new_text) != 1) ||
 665       (new_text_length > 0 &&
 666        *position <= 1 &&
 667        gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 668        gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':'))
 669     {
 670       gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
 671       g_signal_stop_emission_by_name (chooser_entry, "insert_text");
 672       return FALSE;
 673     }
 674
 675   return TRUE;
 676 }
 677
 678 static void
 679 delete_text_callback (GtkFileChooserEntry *chooser_entry,
 680                       gint                 start_pos,
 681                       gint                 end_pos,
 682                       gpointer             user_data)
 683 {
 684   /* If deleting a drive letter, delete the colon, too */
 685   if (start_pos == 0 && end_pos == 1 &&
 686       gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
 687       gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':')
 688     {
 689       g_signal_handlers_block_by_func (chooser_entry,
 690                                        G_CALLBACK (delete_text_callback),
 691                                        user_data);
 692       gtk_editable_delete_text (GTK_EDITABLE (chooser_entry), 0, 1);
 693       g_signal_handlers_unblock_by_func (chooser_entry,
 694                                          G_CALLBACK (delete_text_callback),
 695                                          user_data);
 696     }
 697 }
 698 #endif
 699
 700 /**
 701  * _gtk_file_chooser_entry_new:
 702  * @eat_tabs: If %FALSE, allow focus navigation with the tab key.
 703  *
 704  * Creates a new #GtkFileChooserEntry object. #GtkFileChooserEntry
 705  * is an internal implementation widget for the GTK+ file chooser
 706  * which is an entry with completion with respect to a
 707  * #GtkFileSystem object.
 708  *
 709  * Return value: the newly created #GtkFileChooserEntry
 710  **/
 711 GtkWidget *
 712 _gtk_file_chooser_entry_new (gboolean       eat_tabs)
 713 {
 714   GtkFileChooserEntry *chooser_entry;
 715
 716   chooser_entry = g_object_new (GTK_TYPE_FILE_CHOOSER_ENTRY, NULL);
 717   chooser_entry->eat_tabs = (eat_tabs != FALSE);
 718
 719   return GTK_WIDGET (chooser_entry);
 720 }
 721
 722 /**
 723  * _gtk_file_chooser_entry_set_base_folder:
 724  * @chooser_entry: a #GtkFileChooserEntry
 725  * @file: file for a folder in the chooser entries current file system.
 726  *
 727  * Sets the folder with respect to which completions occur.
 728  **/
 729 void
 730 _gtk_file_chooser_entry_set_base_folder (GtkFileChooserEntry *chooser_entry,
 731                                          GFile               *file)
 732 {
 733   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
 734   g_return_if_fail (file == NULL || G_IS_FILE (file));
 735
 736   if (chooser_entry->base_folder == file ||
 737       (file != NULL && chooser_entry->base_folder != NULL
 738        && g_file_equal (chooser_entry->base_folder, file)))
 739     return;
 740
 741   if (file)
 742     g_object_ref (file);
 743
 744   if (chooser_entry->base_folder)
 745     g_object_unref (chooser_entry->base_folder);
 746
 747   chooser_entry->base_folder = file;
 748
 749   refresh_current_folder_and_file_part (chooser_entry);
 750 }
 751
 752 /**
 753  * _gtk_file_chooser_entry_get_current_folder:
 754  * @chooser_entry: a #GtkFileChooserEntry
 755  *
 756  * Gets the current folder for the #GtkFileChooserEntry. If the
 757  * user has only entered a filename, this will be in the base folder
 758  * (see _gtk_file_chooser_entry_set_base_folder()), but if the
 759  * user has entered a relative or absolute path, then it will
 760  * be different.  If the user has entered unparsable text, or text which
 761  * the entry cannot handle, this will return %NULL.
 762  *
 763  * Return value: the file for the current folder - you must g_object_unref()
 764  *   the value after use.
 765  **/
 766 GFile *
 767 _gtk_file_chooser_entry_get_current_folder (GtkFileChooserEntry *chooser_entry)
 768 {
 769   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 770
 771   return gtk_file_chooser_get_directory_for_text (chooser_entry,
 772                                                   gtk_entry_get_text (GTK_ENTRY (chooser_entry)));
 773 }
 774
 775 /**
 776  * _gtk_file_chooser_entry_get_file_part:
 777  * @chooser_entry: a #GtkFileChooserEntry
 778  *
 779  * Gets the non-folder portion of whatever the user has entered
 780  * into the file selector. What is returned is a UTF-8 string,
 781  * and if a filename path is needed, g_file_get_child_for_display_name()
 782  * must be used
 783   *
 784  * Return value: the entered filename - this value is owned by the
 785  *  chooser entry and must not be modified or freed.
 786  **/
 787 const gchar *
 788 _gtk_file_chooser_entry_get_file_part (GtkFileChooserEntry *chooser_entry)
 789 {
 790   const char *last_slash, *text;
 791
 792   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
 793
 794   text = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 795   last_slash = strrchr (text, G_DIR_SEPARATOR);
 796   if (last_slash)
 797     return last_slash + 1;
 798   else
 799     return text;
 800 }
 801
 802 /**
 803  * _gtk_file_chooser_entry_set_action:
 804  * @chooser_entry: a #GtkFileChooserEntry
 805  * @action: the action which is performed by the file selector using this entry
 806  *
 807  * Sets action which is performed by the file selector using this entry.
 808  * The #GtkFileChooserEntry will use different completion strategies for
 809  * different actions.
 810  **/
 811 void
 812 _gtk_file_chooser_entry_set_action (GtkFileChooserEntry *chooser_entry,
 813                                     GtkFileChooserAction action)
 814 {
 815   g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
 816
 817   if (chooser_entry->action != action)
 818     {
 819       GtkEntryCompletion *comp;
 820
 821       chooser_entry->action = action;
 822
 823       comp = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
 824
 825       /* FIXME: do we need to actually set the following? */
 826
 827       switch (action)
 828         {
 829         case GTK_FILE_CHOOSER_ACTION_OPEN:
 830         case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
 831           gtk_entry_completion_set_popup_single_match (comp, FALSE);
 832           break;
 833         case GTK_FILE_CHOOSER_ACTION_SAVE:
 834         case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
 835           gtk_entry_completion_set_popup_single_match (comp, TRUE);
 836           break;
 837         }
 838
 839       if (chooser_entry->completion_store)
 840         _gtk_file_system_model_set_show_files (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 841                                                action == GTK_FILE_CHOOSER_ACTION_OPEN ||
 842                                                action == GTK_FILE_CHOOSER_ACTION_SAVE);
 843
 844       update_inline_completion (chooser_entry);
 845     }
 846 }
 847
 848
 849 /**
 850  * _gtk_file_chooser_entry_get_action:
 851  * @chooser_entry: a #GtkFileChooserEntry
 852  *
 853  * Gets the action for this entry.
 854  *
 855  * Returns: the action
 856  **/
 857 GtkFileChooserAction
 858 _gtk_file_chooser_entry_get_action (GtkFileChooserEntry *chooser_entry)
 859 {
 860   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry),
 861                         GTK_FILE_CHOOSER_ACTION_OPEN);
 862
 863   return chooser_entry->action;
 864 }
 865
 866 gboolean
 867 _gtk_file_chooser_entry_get_is_folder (GtkFileChooserEntry *chooser_entry,
 868                                        GFile               *file)
 869 {
 870   GtkTreeIter iter;
 871   GFileInfo *info;
 872
 873   if (chooser_entry->completion_store == NULL ||
 874       !_gtk_file_system_model_get_iter_for_file (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 875                                                  &iter,
 876                                                  file))
 877     return FALSE;
 878
 879   info = _gtk_file_system_model_get_info (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
 880                                           &iter);
 881
 882   return _gtk_file_info_consider_as_directory (info);
 883 }
 884
 885
 886 /*
 887  * _gtk_file_chooser_entry_select_filename:
 888  * @chooser_entry: a #GtkFileChooserEntry
 889  *
 890  * Selects the filename (without the extension) for user edition.
 891  */
 892 void
 893 _gtk_file_chooser_entry_select_filename (GtkFileChooserEntry *chooser_entry)
 894 {
 895   const gchar *str, *ext;
 896   glong len = -1;
 897
 898   if (chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE)
 899     {
 900       str = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
 901       ext = g_strrstr (str, ".");
 902
 903       if (ext)
 904        len = g_utf8_pointer_to_offset (str, ext);
 905     }
 906
 907   gtk_editable_select_region (GTK_EDITABLE (chooser_entry), 0, (gint) len);
 908 }
 909
 910 void
 911 _gtk_file_chooser_entry_set_local_only (GtkFileChooserEntry *chooser_entry,
 912                                         gboolean             local_only)
 913 {
 914   chooser_entry->local_only = local_only;
 915   refresh_current_folder_and_file_part (chooser_entry);
 916 }
 917
 918 gboolean
 919 _gtk_file_chooser_entry_get_local_only (GtkFileChooserEntry *chooser_entry)
 920 {
 921   return chooser_entry->local_only;
 922 }