pintos-os.org Git - pspp/blob - src/ui/gui/psppire-window.c

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2009, 2010, 2011, 2013, 2014, 2020 Free Software Foundation
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17 #include <config.h>
  18 #include <gl/relocatable.h>
  19
  20 #include "psppire-window.h"
  21 #include "psppire-window-base.h"
  22
  23 #include <gtk/gtk.h>
  24
  25 #include <stdlib.h>
  26
  27 #include <gettext.h>
  28 #define _(msgid) gettext (msgid)
  29 #define N_(msgid) msgid
  30
  31 #include "data/any-reader.h"
  32 #include "data/file-handle-def.h"
  33 #include "data/dataset.h"
  34 #include "libpspp/version.h"
  35 #include "output/group-item.h"
  36 #include "output/image-item.h"
  37 #include "output/pivot-table.h"
  38 #include "output/spv/spv.h"
  39 #include "output/spv/spv-output.h"
  40 #include "output/spv/spv-select.h"
  41
  42 #include "helper.h"
  43 #include "psppire-data-window.h"
  44 #include "psppire-encoding-selector.h"
  45 #include "psppire-syntax-window.h"
  46 #include "psppire-window-register.h"
  47
  48 static void psppire_window_class_init    (PsppireWindowClass *class);
  49 static void psppire_window_init          (PsppireWindow      *window);
  50
  51 static GObjectClass *parent_class;
  52
  53 G_DEFINE_ABSTRACT_TYPE (PsppireWindow, psppire_window, PSPPIRE_TYPE_WINDOW_BASE)
  54
  55 /* Properties */
  56 enum
  57 {
  58   PROP_0,
  59   PROP_FILENAME,
  60   PROP_DESCRIPTION,
  61   PROP_ID
  62 };
  63
  64
  65 static void
  66 psppire_window_set_title (PsppireWindow *window)
  67 {
  68   GString *title = g_string_sized_new (80);
  69
  70   if (window->edited != NULL)
  71     g_string_append_c (title, '*');
  72
  73   if (window->basename || window->id)
  74     {
  75       if (window->basename)
  76         g_string_append_printf (title, "%s ", window->basename);
  77
  78       if (window->id)
  79         g_string_append_printf (title, "[%s] ", window->id);
  80
  81       g_string_append_unichar (title, 0x2014); /* em dash */
  82       g_string_append_c (title, ' '); /* em dash */
  83     }
  84
  85   g_string_append_printf (title, "PSPPIRE %s", window->description);
  86
  87   int minor = 1;
  88   sscanf (bare_version, "%*d.%d.%*d", &minor);
  89   if (minor % 2)
  90     g_string_append_printf (title, " - Test version! Please report bugs to %s", PACKAGE_BUGREPORT);
  91
  92   gtk_window_set_title (GTK_WINDOW (window), title->str);
  93
  94   g_string_free (title, TRUE);
  95 }
  96
  97 static void
  98 psppire_window_update_list_name (PsppireWindow *window)
  99 {
 100   PsppireWindowRegister *reg = psppire_window_register_new ();
 101   GString *candidate = g_string_sized_new (80);
 102   int n;
 103
 104   n = 1;
 105   do
 106     {
 107       /* Compose a name. */
 108       g_string_truncate (candidate, 0);
 109       if (window->filename)
 110         {
 111           gchar *display_filename = g_filename_display_name (window->filename);
 112           g_string_append (candidate, display_filename);
 113           g_free (display_filename);
 114
 115           if (window->id)
 116             g_string_append_printf (candidate, " [%s]", window->id);
 117         }
 118       else if (window->id)
 119         g_string_append_printf (candidate, "[%s]", window->id);
 120       else
 121         g_string_append (candidate, window->description);
 122
 123       if (n++ > 1)
 124         g_string_append_printf (candidate, " #%d", n);
 125
 126       if (window->list_name && !strcmp (candidate->str, window->list_name))
 127         {
 128           /* Keep the existing name. */
 129           g_string_free (candidate, TRUE);
 130           return;
 131         }
 132     }
 133   while (psppire_window_register_lookup (reg, candidate->str));
 134
 135   if (window->list_name)
 136     psppire_window_register_remove (reg, window->list_name);
 137
 138   g_free (window->list_name);
 139   window->list_name = g_string_free (candidate, FALSE);
 140
 141   psppire_window_register_insert (reg, window, window->list_name);
 142 }
 143
 144 static void
 145 psppire_window_name_changed (PsppireWindow *window)
 146 {
 147   psppire_window_set_title (window);
 148   psppire_window_update_list_name (window);
 149 }
 150
 151 static void
 152 psppire_window_set_property (GObject         *object,
 153                              guint            prop_id,
 154                              const GValue    *value,
 155                              GParamSpec      *pspec)
 156 {
 157   PsppireWindow *window = PSPPIRE_WINDOW (object);
 158
 159   switch (prop_id)
 160     {
 161     case PROP_DESCRIPTION:
 162       g_free (window->description);
 163       window->description = g_value_dup_string (value);
 164       psppire_window_set_title (window);
 165       break;
 166     case PROP_FILENAME:
 167       g_free (window->filename);
 168       window->filename = g_value_dup_string (value);
 169       g_free (window->basename);
 170       window->basename = (window->filename
 171                           ? g_filename_display_basename (window->filename)
 172                           : NULL);
 173       psppire_window_name_changed (window);
 174       break;
 175     case PROP_ID:
 176       g_free (window->id);
 177       window->id = g_value_dup_string (value);
 178       psppire_window_name_changed (window);
 179       break;
 180     default:
 181       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 182       break;
 183     };
 184 }
 185
 186
 187 static void
 188 psppire_window_get_property (GObject         *object,
 189                              guint            prop_id,
 190                              GValue          *value,
 191                              GParamSpec      *pspec)
 192 {
 193   PsppireWindow *window = PSPPIRE_WINDOW (object);
 194
 195   switch (prop_id)
 196     {
 197     case PROP_FILENAME:
 198       g_value_set_string (value, window->filename);
 199       break;
 200     case PROP_DESCRIPTION:
 201       g_value_set_string (value, window->description);
 202       break;
 203     case PROP_ID:
 204       g_value_set_string (value, window->id);
 205       break;
 206     default:
 207       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 208       break;
 209     };
 210 }
 211
 212
 213 static void
 214 psppire_window_finalize (GObject *object)
 215 {
 216   PsppireWindow *window = PSPPIRE_WINDOW (object);
 217
 218   PsppireWindowRegister *reg = psppire_window_register_new ();
 219
 220   if (window->edited)
 221     g_date_time_unref (window->edited);
 222
 223   g_signal_handler_disconnect (reg, window->remove_handler);
 224   g_signal_handler_disconnect (reg, window->insert_handler);
 225   psppire_window_register_remove (reg, window->list_name);
 226   g_free (window->filename);
 227   g_free (window->basename);
 228   g_free (window->id);
 229   g_free (window->description);
 230   g_free (window->list_name);
 231
 232   g_hash_table_destroy (window->menuitem_table);
 233
 234   if (G_OBJECT_CLASS (parent_class)->finalize)
 235     G_OBJECT_CLASS (parent_class)->finalize (object);
 236 }
 237
 238 static void
 239 psppire_window_class_init (PsppireWindowClass *class)
 240 {
 241   GObjectClass *object_class = G_OBJECT_CLASS (class);
 242
 243   object_class->finalize = psppire_window_finalize;
 244
 245   GParamSpec *description_spec =
 246     null_if_empty_param ("description",
 247                        "Description",
 248                        "A string describing the usage of the window",
 249                          NULL, /*Should be overridden by derived classes */
 250                        G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
 251
 252   GParamSpec *filename_spec =
 253     null_if_empty_param ("filename",
 254                        "File name",
 255                        "The name of the file associated with this window, if any",
 256                          NULL,
 257                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 258
 259   GParamSpec *id_spec =
 260     null_if_empty_param ("id",
 261                          "Identifier",
 262                          "The PSPP language identifier for the data associated "
 263                          "with this window (e.g. dataset name)",
 264                          NULL,
 265                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 266
 267   object_class->set_property = psppire_window_set_property;
 268   object_class->get_property = psppire_window_get_property;
 269
 270   g_object_class_install_property (object_class,
 271                                    PROP_DESCRIPTION,
 272                                    description_spec);
 273
 274   g_object_class_install_property (object_class,
 275                                    PROP_FILENAME,
 276                                    filename_spec);
 277
 278   g_object_class_install_property (object_class,
 279                                    PROP_ID,
 280                                    id_spec);
 281
 282   parent_class = g_type_class_peek_parent (class);
 283 }
 284
 285
 286 static void
 287 insert_menuitem_into_menu (PsppireWindow *window, gpointer key)
 288 {
 289   gchar *filename;
 290   GtkWidget *item;
 291   filename = g_filename_display_name (key);
 292   item = gtk_check_menu_item_new_with_label (filename);
 293   g_object_ref_sink (item);
 294   g_free (filename);
 295
 296   g_hash_table_insert (window->menuitem_table, key, item);
 297 }
 298
 299 static void
 300 insert_item (gpointer key, gpointer value, gpointer data)
 301 {
 302   PsppireWindow *window = PSPPIRE_WINDOW (data);
 303
 304   if (NULL != g_hash_table_lookup (window->menuitem_table, key))
 305     return;
 306
 307   insert_menuitem_into_menu (window, key);
 308 }
 309
 310 /* Insert a new item into the window menu */
 311 static void
 312 insert_menuitem (GObject *reg, const gchar *key, gpointer data)
 313 {
 314   PsppireWindow *window = PSPPIRE_WINDOW (data);
 315
 316   insert_menuitem_into_menu (window, (gpointer) key);
 317 }
 318
 319
 320 static void
 321 remove_menuitem (PsppireWindowRegister *reg, const gchar *key, gpointer data)
 322 {
 323   PsppireWindow *window = PSPPIRE_WINDOW (data);
 324   g_hash_table_remove (window->menuitem_table, key);
 325 }
 326
 327 static void
 328 insert_existing_items (PsppireWindow *window)
 329 {
 330   psppire_window_register_foreach (psppire_window_register_new (), insert_item, window);
 331 }
 332
 333
 334 static gboolean
 335 on_delete (PsppireWindow *w, GdkEvent *event, gpointer user_data)
 336 {
 337   PsppireWindowRegister *reg = psppire_window_register_new ();
 338
 339   if (w->edited != NULL)
 340     {
 341       gint response = psppire_window_query_save (w);
 342
 343       switch (response)
 344         {
 345         default:
 346         case GTK_RESPONSE_CANCEL:
 347           return TRUE;
 348           break;
 349         case GTK_RESPONSE_APPLY:
 350           psppire_window_save (w);
 351           if (w->edited != NULL)
 352             {
 353               /* Save failed, or user exited Save As dialog with Cancel. */
 354               return TRUE;
 355             }
 356           break;
 357         case GTK_RESPONSE_REJECT:
 358           break;
 359         }
 360     }
 361
 362   if (1 == psppire_window_register_n_items (reg))
 363     gtk_main_quit ();
 364
 365   return FALSE;
 366 }
 367
 368
 369 static void
 370 psppire_window_init (PsppireWindow *window)
 371 {
 372   window->filename = NULL;
 373   window->basename = NULL;
 374   window->id = NULL;
 375   window->description = NULL;
 376   window->list_name = NULL;
 377   window->edited = NULL;
 378
 379   window->menuitem_table  = g_hash_table_new_full (g_str_hash, g_str_equal,
 380                                                    NULL, g_object_unref);
 381
 382
 383   g_signal_connect (window,  "realize", G_CALLBACK (insert_existing_items), NULL);
 384
 385   PsppireWindowRegister *reg = psppire_window_register_new ();
 386   window->insert_handler = g_signal_connect (reg,
 387                                              "inserted",
 388                                              G_CALLBACK (insert_menuitem),
 389                                              window);
 390
 391   window->remove_handler = g_signal_connect (reg,
 392                                              "removed",
 393                                              G_CALLBACK (remove_menuitem),
 394                                              window);
 395
 396   window->added_separator = FALSE;
 397
 398   g_signal_connect_swapped (window, "delete-event", G_CALLBACK (on_delete), window);
 399
 400   g_object_set (window, "icon-name", "pspp", NULL);
 401 }
 402
 403 /*
 404    Ask the user if the buffer should be saved.
 405    Return the response.
 406 */
 407 gint
 408 psppire_window_query_save (PsppireWindow *se)
 409 {
 410   gint response;
 411   GtkWidget *dialog;
 412   GtkWidget *cancel_button;
 413
 414   gchar *description;
 415
 416   GDateTime *now = g_date_time_new_now_utc ();
 417   GTimeSpan timespan = g_date_time_difference (now, se->edited);
 418   g_date_time_unref (now);
 419
 420   if (se->filename)
 421     description = g_filename_display_basename (se->filename);
 422   else if (se->id)
 423     description = g_strdup (se->id);
 424   else
 425     description = g_strdup (se->description);
 426   dialog =
 427     gtk_message_dialog_new (GTK_WINDOW (se),
 428                             GTK_DIALOG_MODAL,
 429                             GTK_MESSAGE_WARNING,
 430                             GTK_BUTTONS_NONE,
 431                             _("Save the changes to `%s' before closing?"),
 432                             description);
 433   g_free (description);
 434
 435   g_object_set (dialog, "icon-name", "pspp", NULL);
 436
 437   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 438                                             _("If you don't save, changes from the last %ld seconds will be permanently lost."),
 439                                             (long int) (timespan / G_TIME_SPAN_SECOND));
 440
 441   gtk_dialog_add_button  (GTK_DIALOG (dialog),
 442                           _("Close _without saving"),
 443                           GTK_RESPONSE_REJECT);
 444
 445   cancel_button = gtk_dialog_add_button  (GTK_DIALOG (dialog),
 446                                           _("Cancel"),
 447                                           GTK_RESPONSE_CANCEL);
 448
 449   gtk_dialog_add_button  (GTK_DIALOG (dialog),
 450                           _("Save"),
 451                           GTK_RESPONSE_APPLY);
 452
 453   gtk_widget_grab_focus (cancel_button);
 454
 455   response = gtk_dialog_run (GTK_DIALOG (dialog));
 456
 457   gtk_widget_destroy (dialog);
 458
 459   return response;
 460 }
 461
 462
 463 /* The return value is encoded in the glib filename encoding. */
 464 const gchar *
 465 psppire_window_get_filename (PsppireWindow *w)
 466 {
 467   return w->filename;
 468 }
 469
 470
 471 /* FILENAME must be encoded in the glib filename encoding. */
 472 void
 473 psppire_window_set_filename (PsppireWindow *w, const gchar *filename)
 474 {
 475   g_object_set (w, "filename", filename, NULL);
 476 }
 477
 478 void
 479 psppire_window_set_unsaved (PsppireWindow *w)
 480 {
 481   if (w->edited == NULL)
 482     w->edited = g_date_time_new_now_utc ();
 483
 484   psppire_window_set_title (w);
 485 }
 486
 487 gboolean
 488 psppire_window_get_unsaved (PsppireWindow *w)
 489 {
 490   return w->edited != NULL;
 491 }
 492
 493
 494 \f
 495
 496
 497 static void
 498 minimise_window (gpointer key, gpointer value, gpointer data)
 499 {
 500   gtk_window_iconify (GTK_WINDOW (value));
 501 }
 502
 503
 504 void
 505 psppire_window_minimise_all (void)
 506 {
 507   PsppireWindowRegister *reg = psppire_window_register_new ();
 508
 509   g_hash_table_foreach (reg->name_table, minimise_window, NULL);
 510 }
 511
 512
 513 \f
 514
 515 GType
 516 psppire_window_model_get_type (void)
 517 {
 518   static GType window_model_type = 0;
 519
 520   if (! window_model_type)
 521     {
 522       static const GTypeInfo window_model_info =
 523       {
 524         sizeof (PsppireWindowIface), /* class_size */
 525         NULL,           /* base_init */
 526         NULL,           /* base_finalize */
 527         NULL,
 528         NULL,           /* class_finalize */
 529         NULL,           /* class_data */
 530         0,
 531         0,              /* n_preallocs */
 532         NULL,
 533         NULL            /* value_table */
 534       };
 535
 536       window_model_type =
 537         g_type_register_static (G_TYPE_INTERFACE, "PsppireWindowModel",
 538                                 &window_model_info, 0);
 539
 540       g_type_interface_add_prerequisite (window_model_type, G_TYPE_OBJECT);
 541     }
 542
 543   return window_model_type;
 544 }
 545
 546
 547 void
 548 psppire_window_save (PsppireWindow *w)
 549 {
 550   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 551
 552   g_assert (i);
 553   g_return_if_fail (i->save);
 554
 555   if (w->filename == NULL)
 556     psppire_window_save_as (w);
 557   else
 558     {
 559       i->save (w);
 560       if (w->edited)
 561         g_date_time_unref (w->edited);
 562       w->edited = NULL;
 563
 564       psppire_window_set_title (w);
 565     }
 566 }
 567
 568 void
 569 psppire_window_save_as (PsppireWindow *w)
 570 {
 571   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 572   gchar *old_filename;
 573
 574   g_assert (i);
 575   g_return_if_fail (i->pick_filename);
 576
 577   old_filename = w->filename;
 578   w->filename = NULL;
 579
 580   i->pick_filename (w);
 581   if (w->filename == NULL)
 582     w->filename = old_filename;
 583   else
 584     {
 585       g_free (old_filename);
 586       psppire_window_save (w);
 587     }
 588 }
 589
 590 static void delete_recent (const char *file_name);
 591
 592 gboolean
 593 psppire_window_load (PsppireWindow *w, const gchar *file,
 594                      const gchar *encoding, gpointer hint)
 595 {
 596   gboolean ok;
 597   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 598
 599   g_assert (PSPPIRE_IS_WINDOW_MODEL (w));
 600
 601   g_assert (i);
 602
 603   g_return_val_if_fail (i->load, FALSE);
 604
 605   ok = i->load (w, file, encoding, hint);
 606
 607   if (ok)
 608     {
 609       psppire_window_set_filename (w, file);
 610       if (w->edited)
 611         g_date_time_unref (w->edited);
 612       w->edited = NULL;
 613     }
 614   else
 615     delete_recent (file);
 616
 617   return ok;
 618 }
 619
 620
 621 GtkWidget *
 622 psppire_window_file_chooser_dialog (PsppireWindow *toplevel)
 623 {
 624   GtkFileFilter *filter = gtk_file_filter_new ();
 625   GtkWidget *dialog =
 626     gtk_file_chooser_dialog_new (_("Open"),
 627                                  GTK_WINDOW (toplevel),
 628                                  GTK_FILE_CHOOSER_ACTION_OPEN,
 629                                  _("Cancel"), GTK_RESPONSE_CANCEL,
 630                                  _("Open"), GTK_RESPONSE_ACCEPT,
 631                                  NULL);
 632
 633   g_object_set (dialog, "local-only", FALSE, NULL);
 634
 635   gtk_file_filter_set_name (filter, _("Data and Syntax Files"));
 636   gtk_file_filter_add_mime_type (filter, "application/x-spss-sav");
 637   gtk_file_filter_add_mime_type (filter, "application/x-spss-por");
 638   gtk_file_filter_add_mime_type (filter, "application/x-spss-spv");
 639   gtk_file_filter_add_pattern (filter, "*.zsav");
 640   gtk_file_filter_add_pattern (filter, "*.sps");
 641   gtk_file_filter_add_pattern (filter, "*.SPS");
 642   gtk_file_filter_add_pattern (filter, "*.spv");
 643   gtk_file_filter_add_pattern (filter, "*.SPV");
 644   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 645
 646   filter = gtk_file_filter_new ();
 647   gtk_file_filter_set_name (filter, _("System Files (*.sav, *.zsav)"));
 648   gtk_file_filter_add_mime_type (filter, "application/x-spss-sav");
 649   gtk_file_filter_add_pattern (filter, "*.zsav");
 650   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 651
 652   filter = gtk_file_filter_new ();
 653   gtk_file_filter_set_name (filter, _("Portable Files (*.por) "));
 654   gtk_file_filter_add_mime_type (filter, "application/x-spss-por");
 655   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 656
 657   filter = gtk_file_filter_new ();
 658   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 659   gtk_file_filter_add_pattern (filter, "*.sps");
 660   gtk_file_filter_add_pattern (filter, "*.SPS");
 661   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 662
 663   filter = gtk_file_filter_new ();
 664   gtk_file_filter_set_name (filter, _("Output Files (*.spv) "));
 665   gtk_file_filter_add_pattern (filter, "*.spv");
 666   gtk_file_filter_add_pattern (filter, "*.SPV");
 667   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 668
 669   filter = gtk_file_filter_new ();
 670   gtk_file_filter_set_name (filter, _("All Files"));
 671   gtk_file_filter_add_pattern (filter, "*");
 672   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 673
 674   if (toplevel->filename)
 675     {
 676       const gchar *filename = toplevel->filename;
 677       gchar *dir_name;
 678
 679       if (! g_path_is_absolute (filename))
 680         {
 681           gchar *path =
 682             g_build_filename (g_get_current_dir (), filename, NULL);
 683           dir_name = g_path_get_dirname (path);
 684           g_free (path);
 685         }
 686       else
 687         {
 688           dir_name = g_path_get_dirname (filename);
 689         }
 690       gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog),
 691                                            dir_name);
 692       free (dir_name);
 693     }
 694
 695     gtk_file_chooser_set_extra_widget (
 696       GTK_FILE_CHOOSER (dialog),
 697       psppire_encoding_selector_new ("Auto", true));
 698
 699   return dialog;
 700 }
 701
 702 struct item_path
 703   {
 704     const struct spv_item **nodes;
 705     size_t n;
 706
 707 #define N_STUB 10
 708     const struct spv_item *stub[N_STUB];
 709   };
 710
 711 static void
 712 swap_nodes (const struct spv_item **a, const struct spv_item **b)
 713 {
 714   const struct spv_item *tmp = *a;
 715   *a = *b;
 716   *b = tmp;
 717 }
 718
 719 static void
 720 get_path (const struct spv_item *item, struct item_path *path)
 721 {
 722   size_t allocated = 10;
 723   path->nodes = path->stub;
 724   path->n = 0;
 725
 726   while (item)
 727     {
 728       if (path->n >= allocated)
 729         {
 730           if (path->nodes == path->stub)
 731             path->nodes = xmemdup (path->stub, sizeof path->stub);
 732           path->nodes = x2nrealloc (path->nodes, &allocated,
 733                                     sizeof *path->nodes);
 734         }
 735       path->nodes[path->n++] = item;
 736       item = item->parent;
 737     }
 738
 739   for (size_t i = 0; i < path->n / 2; i++)
 740     swap_nodes (&path->nodes[i], &path->nodes[path->n - i - 1]);
 741 }
 742
 743 static void
 744 free_path (struct item_path *path)
 745 {
 746   if (path && path->nodes != path->stub)
 747     free (path->nodes);
 748 }
 749
 750 static void
 751 dump_heading_transition (const struct spv_item *old,
 752                          const struct spv_item *new)
 753 {
 754   if (old == new)
 755     return;
 756
 757   struct item_path old_path, new_path;
 758   get_path (old, &old_path);
 759   get_path (new, &new_path);
 760
 761   size_t common = 0;
 762   for (; common < old_path.n && common < new_path.n; common++)
 763     if (old_path.nodes[common] != new_path.nodes[common])
 764       break;
 765
 766   for (size_t i = common; i < old_path.n; i++)
 767     group_close_item_submit (group_close_item_create ());
 768   for (size_t i = common; i < new_path.n; i++)
 769     group_open_item_submit (group_open_item_create (
 770                               new_path.nodes[i]->command_id,
 771                               new_path.nodes[i]->label));
 772
 773   free_path (&old_path);
 774   free_path (&new_path);
 775 }
 776
 777 void
 778 read_spv_file (const char *filename)
 779 {
 780   struct spv_reader *spv;
 781   char *error = spv_open (filename, &spv);
 782   if (error)
 783     {
 784       /* XXX */
 785       fprintf (stderr, "%s\n", error);
 786       return;
 787     }
 788
 789   struct spv_item **items;
 790   size_t n_items;
 791   spv_select (spv, NULL, 0, &items, &n_items);
 792   struct spv_item *prev_heading = spv_get_root (spv);
 793   for (size_t i = 0; i < n_items; i++)
 794     {
 795       struct spv_item *heading
 796         = items[i]->type == SPV_ITEM_HEADING ? items[i] : items[i]->parent;
 797       dump_heading_transition (prev_heading, heading);
 798       if (items[i]->type == SPV_ITEM_TEXT)
 799         spv_text_submit (items[i]);
 800       else if (items[i]->type == SPV_ITEM_TABLE)
 801         pivot_table_submit (pivot_table_ref (spv_item_get_table (items[i])));
 802       else if (items[i]->type == SPV_ITEM_IMAGE)
 803         {
 804           cairo_surface_t *image = spv_item_get_image (items[i]);
 805           image_item_submit (image_item_create (cairo_surface_reference (
 806                                                   image)));
 807         }
 808       prev_heading = heading;
 809     }
 810   dump_heading_transition (prev_heading, spv_get_root (spv));
 811   free (items);
 812   spv_close (spv);
 813 }
 814
 815 /* Callback for the file_open action.
 816    Prompts for a filename and opens it */
 817 void
 818 psppire_window_open (PsppireWindow *de)
 819 {
 820   GtkWidget *dialog = psppire_window_file_chooser_dialog (de);
 821
 822   gtk_file_chooser_add_shortcut_folder (GTK_FILE_CHOOSER (dialog), relocate (examples_dir), NULL);
 823
 824   switch (gtk_dialog_run (GTK_DIALOG (dialog)))
 825     {
 826     case GTK_RESPONSE_ACCEPT:
 827       {
 828         gchar *name =
 829           gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
 830
 831         const gchar **cs = NULL;
 832         g_get_filename_charsets (&cs);
 833
 834         gchar *encoding = psppire_encoding_selector_get_encoding (
 835           gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 836
 837         struct file_handle *fh = fh_create_file (NULL, name, cs[0], fh_default_properties ());
 838
 839         int retval = any_reader_detect (fh, NULL);
 840         if (retval == 1)
 841           open_data_window (de, name, encoding, NULL);
 842         else if (retval == 0)
 843           {
 844             char *error = spv_detect (name);
 845             if (!error)
 846               read_spv_file (name);
 847             else
 848               {
 849                 free (error);
 850                 open_syntax_window (name, encoding);
 851               }
 852           }
 853
 854         g_free (encoding);
 855         fh_unref (fh);
 856         g_free (name);
 857       }
 858       break;
 859     default:
 860       break;
 861     }
 862
 863   gtk_widget_destroy (dialog);
 864 }
 865
 866
 867 /* Puts FILE_NAME (encoded in the glib file name encoding) into the recent list
 868    with associated MIME_TYPE.  If it's already in the list, it moves it to the
 869    top. */
 870 void
 871 add_most_recent (const char *file_name,
 872                  const char *mime_type, const char *encoding)
 873 {
 874   gchar *uri = g_filename_to_uri  (file_name, NULL, NULL);
 875   if (uri)
 876     {
 877       GtkRecentData recent_data;
 878       gchar *full_mime_type;
 879
 880       if (encoding && encoding[0])
 881         full_mime_type = g_strdup_printf ("%s; charset=%s",
 882                                           mime_type, encoding);
 883       else
 884         full_mime_type = g_strdup (mime_type);
 885
 886       recent_data.display_name = NULL;
 887       recent_data.description = NULL;
 888       recent_data.mime_type = full_mime_type;
 889       recent_data.app_name = CONST_CAST (gchar *, g_get_application_name ());
 890       recent_data.app_exec = g_strjoin (" ", g_get_prgname (), "%u", NULL);
 891       recent_data.groups = NULL;
 892       recent_data.is_private = FALSE;
 893
 894       gtk_recent_manager_add_full (gtk_recent_manager_get_default (),
 895                                    uri, &recent_data);
 896
 897       g_free (recent_data.app_exec);
 898       g_free (full_mime_type);
 899     }
 900
 901   g_free (uri);
 902 }
 903
 904
 905
 906 /*
 907    If FILE_NAME exists in the recent list, then  delete it.
 908  */
 909 static void
 910 delete_recent (const char *file_name)
 911 {
 912   gchar *uri = g_filename_to_uri  (file_name, NULL, NULL);
 913
 914   if (uri)
 915     gtk_recent_manager_remove_item (gtk_recent_manager_get_default (), uri, NULL);
 916
 917   g_free (uri);
 918 }