Pileus Git - ~andy/gtk/blob - tests/testfilechooser.c

   1 /* testfilechooser.c
   2  * Copyright (C) 2003  Red Hat, Inc.
   3  * Author: Owen Taylor
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library 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  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library 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 #include <config.h>
  21
  22 #include <string.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <stdlib.h>
  26 #include <time.h>
  27 #ifdef HAVE_UNISTD_H
  28 #include <unistd.h>
  29 #endif
  30 #include <gtk/gtk.h>
  31
  32 #ifdef G_OS_WIN32
  33 #  include <io.h>
  34 #  define localtime_r(t,b) *(b) = *localtime (t)
  35 #  ifndef S_ISREG
  36 #    define S_ISREG(m) ((m) & _S_IFREG)
  37 #  endif
  38 #endif
  39
  40 #include "prop-editor.h"
  41
  42 static GtkWidget *preview_label;
  43 static GtkWidget *preview_image;
  44 static GtkFileChooserAction action;
  45
  46 static void
  47 print_current_folder (GtkFileChooser *chooser)
  48 {
  49   gchar *uri;
  50
  51   uri = gtk_file_chooser_get_current_folder_uri (chooser);
  52   g_print ("Current folder changed :\n  %s\n", uri ? uri : "(null)");
  53   g_free (uri);
  54 }
  55
  56 static void
  57 print_selected (GtkFileChooser *chooser)
  58 {
  59   GSList *uris = gtk_file_chooser_get_uris (chooser);
  60   GSList *tmp_list;
  61
  62   g_print ("Selection changed :\n");
  63   for (tmp_list = uris; tmp_list; tmp_list = tmp_list->next)
  64     {
  65       gchar *uri = tmp_list->data;
  66       g_print ("  %s\n", uri);
  67       g_free (uri);
  68     }
  69   g_print ("\n");
  70   g_slist_free (uris);
  71 }
  72
  73 static void
  74 response_cb (GtkDialog *dialog,
  75              gint       response_id)
  76 {
  77   if (response_id == GTK_RESPONSE_OK)
  78     {
  79       GSList *list;
  80
  81       list = gtk_file_chooser_get_uris (GTK_FILE_CHOOSER (dialog));
  82
  83       if (list)
  84         {
  85           GSList *l;
  86
  87           g_print ("Selected files:\n");
  88
  89           for (l = list; l; l = l->next)
  90             {
  91               g_print ("%s\n", (char *) l->data);
  92               g_free (l->data);
  93             }
  94
  95           g_slist_free (list);
  96         }
  97       else
  98         g_print ("No selected files\n");
  99     }
 100   else
 101     g_print ("Dialog was closed\n");
 102
 103   gtk_main_quit ();
 104 }
 105
 106 static gboolean
 107 no_backup_files_filter (const GtkFileFilterInfo *filter_info,
 108                         gpointer                 data)
 109 {
 110   gsize len = filter_info->display_name ? strlen (filter_info->display_name) : 0;
 111   if (len > 0 && filter_info->display_name[len - 1] == '~')
 112     return 0;
 113   else
 114     return 1;
 115 }
 116
 117 static void
 118 filter_changed (GtkFileChooserDialog *dialog,
 119                 gpointer              data)
 120 {
 121   g_print ("file filter changed\n");
 122 }
 123
 124 static char *
 125 format_time (time_t t)
 126 {
 127   gchar buf[128];
 128   struct tm tm_buf;
 129   time_t now = time (NULL);
 130   const char *format;
 131
 132   if (abs (now - t) < 24*60*60)
 133     format = "%X";
 134   else
 135     format = "%x";
 136
 137   localtime_r (&t, &tm_buf);
 138   if (strftime (buf, sizeof (buf), format, &tm_buf) == 0)
 139     return g_strdup ("<unknown>");
 140   else
 141     return g_strdup (buf);
 142 }
 143
 144 static char *
 145 format_size (gint64 size)
 146 {
 147   if (size < (gint64)1024)
 148     return g_strdup_printf ("%d bytes", (gint)size);
 149   else if (size < (gint64)1024*1024)
 150     return g_strdup_printf ("%.1f K", size / (1024.));
 151   else if (size < (gint64)1024*1024*1024)
 152     return g_strdup_printf ("%.1f M", size / (1024.*1024.));
 153   else
 154     return g_strdup_printf ("%.1f G", size / (1024.*1024.*1024.));
 155 }
 156
 157 #include <stdio.h>
 158 #include <errno.h>
 159 #define _(s) (s)
 160
 161 static void
 162 size_prepared_cb (GdkPixbufLoader *loader,
 163                   int              width,
 164                   int              height,
 165                   int             *data)
 166 {
 167         int des_width = data[0];
 168         int des_height = data[1];
 169
 170         if (des_height >= height && des_width >= width) {
 171                 /* Nothing */
 172         } else if ((double)height * des_width > (double)width * des_height) {
 173                 width = 0.5 + (double)width * des_height / (double)height;
 174                 height = des_height;
 175         } else {
 176                 height = 0.5 + (double)height * des_width / (double)width;
 177                 width = des_width;
 178         }
 179
 180         gdk_pixbuf_loader_set_size (loader, width, height);
 181 }
 182
 183 GdkPixbuf *
 184 my_new_from_file_at_size (const char *filename,
 185                           int         width,
 186                           int         height,
 187                           GError    **error)
 188 {
 189         GdkPixbufLoader *loader;
 190         GdkPixbuf       *pixbuf;
 191         int              info[2];
 192         struct stat st;
 193
 194         guchar buffer [4096];
 195         int length;
 196         FILE *f;
 197
 198         g_return_val_if_fail (filename != NULL, NULL);
 199         g_return_val_if_fail (width > 0 && height > 0, NULL);
 200
 201         if (stat (filename, &st) != 0) {
 202                 g_set_error (error,
 203                              G_FILE_ERROR,
 204                              g_file_error_from_errno (errno),
 205                              _("Could not get information for file '%s': %s"),
 206                              filename, g_strerror (errno));
 207                 return NULL;
 208         }
 209
 210         if (!S_ISREG (st.st_mode))
 211                 return NULL;
 212
 213         f = fopen (filename, "rb");
 214         if (!f) {
 215                 g_set_error (error,
 216                              G_FILE_ERROR,
 217                              g_file_error_from_errno (errno),
 218                              _("Failed to open file '%s': %s"),
 219                              filename, g_strerror (errno));
 220                 return NULL;
 221         }
 222
 223         loader = gdk_pixbuf_loader_new ();
 224 #ifdef DONT_PRESERVE_ASPECT
 225         gdk_pixbuf_loader_set_size (loader, width, height);
 226 #else
 227         info[0] = width;
 228         info[1] = height;
 229         g_signal_connect (loader, "size-prepared", G_CALLBACK (size_prepared_cb), info);
 230 #endif
 231
 232         while (!feof (f)) {
 233                 length = fread (buffer, 1, sizeof (buffer), f);
 234                 if (length > 0)
 235                         if (!gdk_pixbuf_loader_write (loader, buffer, length, error)) {
 236                                 gdk_pixbuf_loader_close (loader, NULL);
 237                                 fclose (f);
 238                                 g_object_unref (loader);
 239                                 return NULL;
 240                         }
 241         }
 242
 243         fclose (f);
 244
 245         g_assert (*error == NULL);
 246         if (!gdk_pixbuf_loader_close (loader, error)) {
 247                 g_object_unref (loader);
 248                 return NULL;
 249         }
 250
 251         pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
 252
 253         if (!pixbuf) {
 254                 g_object_unref (loader);
 255
 256                 /* did the loader set an error? */
 257                 if (*error != NULL)
 258                         return NULL;
 259
 260                 g_set_error (error,
 261                              GDK_PIXBUF_ERROR,
 262                              GDK_PIXBUF_ERROR_FAILED,
 263                              _("Failed to load image '%s': reason not known, probably a corrupt image file"),
 264                              filename);
 265                 return NULL;
 266         }
 267
 268         g_object_ref (pixbuf);
 269
 270         g_object_unref (loader);
 271
 272         return pixbuf;
 273 }
 274
 275 static void
 276 update_preview_cb (GtkFileChooser *chooser)
 277 {
 278   gchar *filename = gtk_file_chooser_get_preview_filename (chooser);
 279   gboolean have_preview = FALSE;
 280
 281   if (filename)
 282     {
 283       GdkPixbuf *pixbuf;
 284       GError *error = NULL;
 285
 286       pixbuf = my_new_from_file_at_size (filename, 128, 128, &error);
 287       if (pixbuf)
 288         {
 289           gtk_image_set_from_pixbuf (GTK_IMAGE (preview_image), pixbuf);
 290           g_object_unref (pixbuf);
 291           gtk_widget_show (preview_image);
 292           gtk_widget_hide (preview_label);
 293           have_preview = TRUE;
 294         }
 295       else
 296         {
 297           struct stat buf;
 298           if (stat (filename, &buf) == 0)
 299             {
 300               gchar *preview_text;
 301               gchar *size_str;
 302               gchar *modified_time;
 303
 304               size_str = format_size (buf.st_size);
 305               modified_time = format_time (buf.st_mtime);
 306
 307               preview_text = g_strdup_printf ("<i>Modified:</i>\t%s\n"
 308                                               "<i>Size:</i>\t%s\n",
 309                                               modified_time,
 310                                               size_str);
 311               gtk_label_set_markup (GTK_LABEL (preview_label), preview_text);
 312               g_free (modified_time);
 313               g_free (size_str);
 314               g_free (preview_text);
 315
 316               gtk_widget_hide (preview_image);
 317               gtk_widget_show (preview_label);
 318               have_preview = TRUE;
 319             }
 320         }
 321
 322       g_free (filename);
 323
 324       if (error)
 325         g_error_free (error);
 326     }
 327
 328   gtk_file_chooser_set_preview_widget_active (chooser, have_preview);
 329 }
 330
 331 static void
 332 set_current_folder (GtkFileChooser *chooser,
 333                     const char     *name)
 334 {
 335   if (!gtk_file_chooser_set_current_folder (chooser, name))
 336     {
 337       GtkWidget *dialog;
 338
 339       dialog = gtk_message_dialog_new (GTK_WINDOW (chooser),
 340                                        GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
 341                                        GTK_MESSAGE_ERROR,
 342                                        GTK_BUTTONS_CLOSE,
 343                                        "Could not set the folder to %s",
 344                                        name);
 345       gtk_dialog_run (GTK_DIALOG (dialog));
 346       gtk_widget_destroy (dialog);
 347     }
 348 }
 349
 350 static void
 351 set_folder_nonexistent_cb (GtkButton      *button,
 352                            GtkFileChooser *chooser)
 353 {
 354   set_current_folder (chooser, "/nonexistent");
 355 }
 356
 357 static void
 358 set_folder_existing_nonexistent_cb (GtkButton      *button,
 359                                     GtkFileChooser *chooser)
 360 {
 361   set_current_folder (chooser, "/usr/nonexistent");
 362 }
 363
 364 static void
 365 set_filename (GtkFileChooser *chooser,
 366               const char     *name)
 367 {
 368   if (!gtk_file_chooser_set_filename (chooser, name))
 369     {
 370       GtkWidget *dialog;
 371
 372       dialog = gtk_message_dialog_new (GTK_WINDOW (chooser),
 373                                        GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
 374                                        GTK_MESSAGE_ERROR,
 375                                        GTK_BUTTONS_CLOSE,
 376                                        "Could not select %s",
 377                                        name);
 378       gtk_dialog_run (GTK_DIALOG (dialog));
 379       gtk_widget_destroy (dialog);
 380     }
 381 }
 382
 383 static void
 384 set_filename_nonexistent_cb (GtkButton      *button,
 385                              GtkFileChooser *chooser)
 386 {
 387   set_filename (chooser, "/nonexistent");
 388 }
 389
 390 static void
 391 set_filename_existing_nonexistent_cb (GtkButton      *button,
 392                                       GtkFileChooser *chooser)
 393 {
 394   set_filename (chooser, "/usr/nonexistent");
 395 }
 396
 397 static void
 398 unmap_and_remap_cb (GtkButton *button,
 399                     GtkFileChooser *chooser)
 400 {
 401   gtk_widget_hide (GTK_WIDGET (chooser));
 402   gtk_widget_show (GTK_WIDGET (chooser));
 403 }
 404
 405 static void
 406 kill_dependent (GtkWindow *win, GtkObject *dep)
 407 {
 408   gtk_object_destroy (dep);
 409   g_object_unref (dep);
 410 }
 411
 412 static void
 413 notify_multiple_cb (GtkWidget  *dialog,
 414                     GParamSpec *pspec,
 415                     GtkWidget  *button)
 416 {
 417   gboolean multiple;
 418
 419   multiple = gtk_file_chooser_get_select_multiple (GTK_FILE_CHOOSER (dialog));
 420
 421   gtk_widget_set_sensitive (button, multiple);
 422 }
 423
 424 static GtkFileChooserConfirmation
 425 confirm_overwrite_cb (GtkFileChooser *chooser,
 426                       gpointer        data)
 427 {
 428   GtkWidget *dialog;
 429   GtkWidget *button;
 430   int response;
 431   GtkFileChooserConfirmation conf;
 432
 433   dialog = gtk_message_dialog_new (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (chooser))),
 434                                    GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
 435                                    GTK_MESSAGE_QUESTION,
 436                                    GTK_BUTTONS_NONE,
 437                                    "What do you want to do?");
 438
 439   button = gtk_button_new_with_label ("Use the stock confirmation dialog");
 440   gtk_widget_show (button);
 441   gtk_dialog_add_action_widget (GTK_DIALOG (dialog), button, 1);
 442
 443   button = gtk_button_new_with_label ("Type a new file name");
 444   gtk_widget_show (button);
 445   gtk_dialog_add_action_widget (GTK_DIALOG (dialog), button, 2);
 446
 447   button = gtk_button_new_with_label ("Accept the file name");
 448   gtk_widget_show (button);
 449   gtk_dialog_add_action_widget (GTK_DIALOG (dialog), button, 3);
 450
 451   response = gtk_dialog_run (GTK_DIALOG (dialog));
 452
 453   switch (response)
 454     {
 455     case 1:
 456       conf = GTK_FILE_CHOOSER_CONFIRMATION_CONFIRM;
 457       break;
 458
 459     case 3:
 460       conf = GTK_FILE_CHOOSER_CONFIRMATION_ACCEPT_FILENAME;
 461       break;
 462
 463     default:
 464       conf = GTK_FILE_CHOOSER_CONFIRMATION_SELECT_AGAIN;
 465       break;
 466     }
 467
 468   gtk_widget_destroy (dialog);
 469
 470   return conf;
 471 }
 472
 473 int
 474 main (int argc, char **argv)
 475 {
 476   GtkWidget *control_window;
 477   GtkWidget *vbbox;
 478   GtkWidget *button;
 479   GtkWidget *dialog;
 480   GtkWidget *prop_editor;
 481   GtkWidget *extra;
 482   GtkFileFilter *filter;
 483   GtkWidget *preview_vbox;
 484   gboolean force_rtl = FALSE;
 485   gboolean multiple = FALSE;
 486   char *action_arg = NULL;
 487   char *backend = NULL;
 488   GError *error = NULL;
 489   GOptionEntry options[] = {
 490     { "action", 'a', 0, G_OPTION_ARG_STRING, &action, "Filechooser action", "ACTION" },
 491     { "backend", 'b', 0, G_OPTION_ARG_STRING, &backend, "Filechooser backend (default: gtk+)", "BACKEND" },
 492     { "multiple", 'm', 0, G_OPTION_ARG_NONE, &multiple, "Select-multiple", NULL },
 493     { "right-to-left", 'r', 0, G_OPTION_ARG_NONE, &force_rtl, "Force right-to-left layout.", NULL },
 494     { NULL }
 495   };
 496
 497   if (!gtk_init_with_args (&argc, &argv, "", options, NULL, &error))
 498     {
 499       g_print ("Failed to parse args: %s\n", error->message);
 500       g_error_free (error);
 501       return 1;
 502     }
 503
 504   if (force_rtl)
 505     gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
 506
 507   action = GTK_FILE_CHOOSER_ACTION_OPEN;
 508
 509   if (action_arg != NULL)
 510     {
 511       if (! strcmp ("open", action_arg))
 512         action = GTK_FILE_CHOOSER_ACTION_OPEN;
 513       else if (! strcmp ("save", action_arg))
 514         action = GTK_FILE_CHOOSER_ACTION_SAVE;
 515       else if (! strcmp ("select_folder", action_arg))
 516         action = GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER;
 517       else if (! strcmp ("create_folder", action_arg))
 518         action = GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER;
 519
 520       g_free (action_arg);
 521     }
 522
 523   if (backend == NULL)
 524     backend = g_strdup ("gtk+");
 525
 526   dialog = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,
 527                          "action", action,
 528                          "file-system-backend", backend,
 529                          "select-multiple", multiple,
 530                          NULL);
 531
 532   g_free (backend);
 533
 534   switch (action)
 535     {
 536     case GTK_FILE_CHOOSER_ACTION_OPEN:
 537     case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
 538       gtk_window_set_title (GTK_WINDOW (dialog), "Select a file");
 539       gtk_dialog_add_buttons (GTK_DIALOG (dialog),
 540                               GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 541                               GTK_STOCK_OPEN, GTK_RESPONSE_OK,
 542                               NULL);
 543       break;
 544     case GTK_FILE_CHOOSER_ACTION_SAVE:
 545     case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
 546       gtk_window_set_title (GTK_WINDOW (dialog), "Save a file");
 547       gtk_dialog_add_buttons (GTK_DIALOG (dialog),
 548                               GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 549                               GTK_STOCK_SAVE, GTK_RESPONSE_OK,
 550                               NULL);
 551       break;
 552     }
 553   gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
 554
 555   g_signal_connect (dialog, "selection-changed",
 556                     G_CALLBACK (print_selected), NULL);
 557   g_signal_connect (dialog, "current-folder-changed",
 558                     G_CALLBACK (print_current_folder), NULL);
 559   g_signal_connect (dialog, "response",
 560                     G_CALLBACK (response_cb), NULL);
 561   g_signal_connect (dialog, "confirm-overwrite",
 562                     G_CALLBACK (confirm_overwrite_cb), NULL);
 563
 564   /* Filters */
 565   filter = gtk_file_filter_new ();
 566   gtk_file_filter_set_name (filter, "All Files");
 567   gtk_file_filter_add_pattern (filter, "*");
 568   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 569
 570   filter = gtk_file_filter_new ();
 571   gtk_file_filter_set_name (filter, "No backup files");
 572   gtk_file_filter_add_custom (filter, GTK_FILE_FILTER_DISPLAY_NAME,
 573                               no_backup_files_filter, NULL, NULL);
 574   gtk_file_filter_add_mime_type (filter, "image/png");
 575   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 576
 577   g_signal_connect (dialog, "notify::filter",
 578                     G_CALLBACK (filter_changed), NULL);
 579
 580   /* Make this filter the default */
 581   gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (dialog), filter);
 582
 583   filter = gtk_file_filter_new ();
 584   gtk_file_filter_set_name (filter, "PNG and JPEG");
 585   gtk_file_filter_add_mime_type (filter, "image/jpeg");
 586   gtk_file_filter_add_mime_type (filter, "image/png");
 587   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 588
 589   filter = gtk_file_filter_new ();
 590   gtk_file_filter_set_name (filter, "Images");
 591   gtk_file_filter_add_pixbuf_formats (filter);
 592   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 593
 594   /* Preview widget */
 595   /* THIS IS A TERRIBLE PREVIEW WIDGET, AND SHOULD NOT BE COPIED AT ALL.
 596    */
 597   preview_vbox = gtk_vbox_new (0, FALSE);
 598   /*gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (dialog), preview_vbox);*/
 599
 600   preview_label = gtk_label_new (NULL);
 601   gtk_box_pack_start (GTK_BOX (preview_vbox), preview_label, TRUE, TRUE, 0);
 602   gtk_misc_set_padding (GTK_MISC (preview_label), 6, 6);
 603
 604   preview_image = gtk_image_new ();
 605   gtk_box_pack_start (GTK_BOX (preview_vbox), preview_image, TRUE, TRUE, 0);
 606   gtk_misc_set_padding (GTK_MISC (preview_image), 6, 6);
 607
 608   update_preview_cb (GTK_FILE_CHOOSER (dialog));
 609   g_signal_connect (dialog, "update-preview",
 610                     G_CALLBACK (update_preview_cb), NULL);
 611
 612   /* Extra widget */
 613
 614   extra = gtk_check_button_new_with_mnemonic ("Lar_t whoever asks about this button");
 615   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (extra), TRUE);
 616   gtk_file_chooser_set_extra_widget (GTK_FILE_CHOOSER (dialog), extra);
 617
 618   /* Shortcuts */
 619
 620   gtk_file_chooser_add_shortcut_folder_uri (GTK_FILE_CHOOSER (dialog),
 621                                             "file:///usr/share/pixmaps",
 622                                             NULL);
 623
 624   /* show_all() to reveal bugs in composite widget handling */
 625   gtk_widget_show_all (dialog);
 626
 627   /* Extra controls for manipulating the test environment
 628    */
 629   prop_editor = create_prop_editor (G_OBJECT (dialog), GTK_TYPE_FILE_CHOOSER);
 630
 631   control_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 632
 633   vbbox = gtk_vbutton_box_new ();
 634   gtk_container_add (GTK_CONTAINER (control_window), vbbox);
 635
 636   button = gtk_button_new_with_mnemonic ("_Select all");
 637   gtk_widget_set_sensitive (button, multiple);
 638   gtk_container_add (GTK_CONTAINER (vbbox), button);
 639   g_signal_connect_swapped (button, "clicked",
 640                             G_CALLBACK (gtk_file_chooser_select_all), dialog);
 641   g_signal_connect (dialog, "notify::select-multiple",
 642                     G_CALLBACK (notify_multiple_cb), button);
 643
 644   button = gtk_button_new_with_mnemonic ("_Unselect all");
 645   gtk_container_add (GTK_CONTAINER (vbbox), button);
 646   g_signal_connect_swapped (button, "clicked",
 647                             G_CALLBACK (gtk_file_chooser_unselect_all), dialog);
 648
 649   button = gtk_button_new_with_label ("set_current_folder (\"/nonexistent\")");
 650   gtk_container_add (GTK_CONTAINER (vbbox), button);
 651   g_signal_connect (button, "clicked",
 652                     G_CALLBACK (set_folder_nonexistent_cb), dialog);
 653
 654   button = gtk_button_new_with_label ("set_current_folder (\"/usr/nonexistent\")");
 655   gtk_container_add (GTK_CONTAINER (vbbox), button);
 656   g_signal_connect (button, "clicked",
 657                     G_CALLBACK (set_folder_existing_nonexistent_cb), dialog);
 658
 659   button = gtk_button_new_with_label ("set_filename (\"/nonexistent\")");
 660   gtk_container_add (GTK_CONTAINER (vbbox), button);
 661   g_signal_connect (button, "clicked",
 662                     G_CALLBACK (set_filename_nonexistent_cb), dialog);
 663
 664   button = gtk_button_new_with_label ("set_filename (\"/usr/nonexistent\")");
 665   gtk_container_add (GTK_CONTAINER (vbbox), button);
 666   g_signal_connect (button, "clicked",
 667                     G_CALLBACK (set_filename_existing_nonexistent_cb), dialog);
 668
 669   button = gtk_button_new_with_label ("Unmap and remap");
 670   gtk_container_add (GTK_CONTAINER (vbbox), button);
 671   g_signal_connect (button, "clicked",
 672                     G_CALLBACK (unmap_and_remap_cb), dialog);
 673
 674   gtk_widget_show_all (control_window);
 675
 676   g_object_ref (control_window);
 677   g_signal_connect (dialog, "destroy",
 678                     G_CALLBACK (kill_dependent), control_window);
 679
 680   /* We need to hold a ref until we have destroyed the widgets, just in case
 681    * someone else destroys them.  We explicitly destroy windows to catch leaks.
 682    */
 683   g_object_ref (dialog);
 684   gtk_main ();
 685   gtk_widget_destroy (dialog);
 686   g_object_unref (dialog);
 687
 688   return 0;
 689 }