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/pivot-table.h"
  37 #include "output/spv/spv.h"
  38 #include "output/spv/spv-output.h"
  39 #include "output/spv/spv-select.h"
  40
  41 #include "helper.h"
  42 #include "psppire-data-window.h"
  43 #include "psppire-encoding-selector.h"
  44 #include "psppire-syntax-window.h"
  45 #include "psppire-window-register.h"
  46
  47 static void psppire_window_base_init     (PsppireWindowClass *class);
  48 static void psppire_window_class_init    (PsppireWindowClass *class);
  49 static void psppire_window_init          (PsppireWindow      *window);
  50
  51
  52 static GObjectClass *parent_class;
  53
  54 GType
  55 psppire_window_get_type (void)
  56 {
  57   static GType psppire_window_type = 0;
  58
  59   if (!psppire_window_type)
  60     {
  61       static const GTypeInfo psppire_window_info =
  62       {
  63         sizeof (PsppireWindowClass),
  64         (GBaseInitFunc) psppire_window_base_init,
  65         (GBaseFinalizeFunc) NULL,
  66         (GClassInitFunc) psppire_window_class_init,
  67         (GClassFinalizeFunc) NULL,
  68         NULL,
  69         sizeof (PsppireWindow),
  70         0,
  71         (GInstanceInitFunc) psppire_window_init,
  72       };
  73
  74       psppire_window_type =
  75         g_type_register_static (PSPPIRE_TYPE_WINDOW_BASE, "PsppireWindow",
  76                                 &psppire_window_info, G_TYPE_FLAG_ABSTRACT);
  77     }
  78
  79   return psppire_window_type;
  80 }
  81
  82
  83 /* Properties */
  84 enum
  85 {
  86   PROP_0,
  87   PROP_FILENAME,
  88   PROP_DESCRIPTION,
  89   PROP_ID
  90 };
  91
  92
  93 static void
  94 psppire_window_set_title (PsppireWindow *window)
  95 {
  96   GString *title = g_string_sized_new (80);
  97
  98   if (window->edited != NULL)
  99     g_string_append_c (title, '*');
 100
 101   if (window->basename || window->id)
 102     {
 103       if (window->basename)
 104         g_string_append_printf (title, "%s ", window->basename);
 105
 106       if (window->id)
 107         g_string_append_printf (title, "[%s] ", window->id);
 108
 109       g_string_append_unichar (title, 0x2014); /* em dash */
 110       g_string_append_c (title, ' '); /* em dash */
 111     }
 112
 113   g_string_append_printf (title, "PSPPIRE %s", window->description);
 114
 115   int minor = 1;
 116   sscanf (bare_version, "%*d.%d.%*d", &minor);
 117   if (minor % 2)
 118     g_string_append_printf (title, " - Test version! Please report bugs to %s", PACKAGE_BUGREPORT);
 119
 120   gtk_window_set_title (GTK_WINDOW (window), title->str);
 121
 122   g_string_free (title, TRUE);
 123 }
 124
 125 static void
 126 psppire_window_update_list_name (PsppireWindow *window)
 127 {
 128   PsppireWindowRegister *reg = psppire_window_register_new ();
 129   GString *candidate = g_string_sized_new (80);
 130   int n;
 131
 132   n = 1;
 133   do
 134     {
 135       /* Compose a name. */
 136       g_string_truncate (candidate, 0);
 137       if (window->filename)
 138         {
 139           gchar *display_filename = g_filename_display_name (window->filename);
 140           g_string_append (candidate, display_filename);
 141           g_free (display_filename);
 142
 143           if (window->id)
 144             g_string_append_printf (candidate, " [%s]", window->id);
 145         }
 146       else if (window->id)
 147         g_string_append_printf (candidate, "[%s]", window->id);
 148       else
 149         g_string_append (candidate, window->description);
 150
 151       if (n++ > 1)
 152         g_string_append_printf (candidate, " #%d", n);
 153
 154       if (window->list_name && !strcmp (candidate->str, window->list_name))
 155         {
 156           /* Keep the existing name. */
 157           g_string_free (candidate, TRUE);
 158           return;
 159         }
 160     }
 161   while (psppire_window_register_lookup (reg, candidate->str));
 162
 163   if (window->list_name)
 164     psppire_window_register_remove (reg, window->list_name);
 165
 166   g_free (window->list_name);
 167   window->list_name = g_string_free (candidate, FALSE);
 168
 169   psppire_window_register_insert (reg, window, window->list_name);
 170 }
 171
 172 static void
 173 psppire_window_name_changed (PsppireWindow *window)
 174 {
 175   psppire_window_set_title (window);
 176   psppire_window_update_list_name (window);
 177 }
 178
 179 static void
 180 psppire_window_set_property (GObject         *object,
 181                              guint            prop_id,
 182                              const GValue    *value,
 183                              GParamSpec      *pspec)
 184 {
 185   PsppireWindow *window = PSPPIRE_WINDOW (object);
 186
 187   switch (prop_id)
 188     {
 189     case PROP_DESCRIPTION:
 190       g_free (window->description);
 191       window->description = g_value_dup_string (value);
 192       psppire_window_set_title (window);
 193       break;
 194     case PROP_FILENAME:
 195       g_free (window->filename);
 196       window->filename = g_value_dup_string (value);
 197       g_free (window->basename);
 198       window->basename = (window->filename
 199                           ? g_filename_display_basename (window->filename)
 200                           : NULL);
 201       psppire_window_name_changed (window);
 202       break;
 203     case PROP_ID:
 204       g_free (window->id);
 205       window->id = g_value_dup_string (value);
 206       psppire_window_name_changed (window);
 207       break;
 208     default:
 209       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 210       break;
 211     };
 212 }
 213
 214
 215 static void
 216 psppire_window_get_property (GObject         *object,
 217                              guint            prop_id,
 218                              GValue          *value,
 219                              GParamSpec      *pspec)
 220 {
 221   PsppireWindow *window = PSPPIRE_WINDOW (object);
 222
 223   switch (prop_id)
 224     {
 225     case PROP_FILENAME:
 226       g_value_set_string (value, window->filename);
 227       break;
 228     case PROP_DESCRIPTION:
 229       g_value_set_string (value, window->description);
 230       break;
 231     case PROP_ID:
 232       g_value_set_string (value, window->id);
 233       break;
 234     default:
 235       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 236       break;
 237     };
 238 }
 239
 240
 241 static void
 242 psppire_window_finalize (GObject *object)
 243 {
 244   PsppireWindow *window = PSPPIRE_WINDOW (object);
 245
 246   PsppireWindowRegister *reg = psppire_window_register_new ();
 247
 248   if (window->edited)
 249     g_date_time_unref (window->edited);
 250
 251   g_signal_handler_disconnect (reg, window->remove_handler);
 252   g_signal_handler_disconnect (reg, window->insert_handler);
 253   psppire_window_register_remove (reg, window->list_name);
 254   g_free (window->filename);
 255   g_free (window->basename);
 256   g_free (window->id);
 257   g_free (window->description);
 258   g_free (window->list_name);
 259
 260   g_hash_table_destroy (window->menuitem_table);
 261
 262   if (G_OBJECT_CLASS (parent_class)->finalize)
 263     G_OBJECT_CLASS (parent_class)->finalize (object);
 264 }
 265
 266 static void
 267 psppire_window_class_init (PsppireWindowClass *class)
 268 {
 269   GObjectClass *object_class = G_OBJECT_CLASS (class);
 270
 271   GParamSpec *description_spec =
 272     null_if_empty_param ("description",
 273                        "Description",
 274                        "A string describing the usage of the window",
 275                          NULL, /*Should be overridden by derived classes */
 276                        G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
 277
 278   GParamSpec *filename_spec =
 279     null_if_empty_param ("filename",
 280                        "File name",
 281                        "The name of the file associated with this window, if any",
 282                          NULL,
 283                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 284
 285   GParamSpec *id_spec =
 286     null_if_empty_param ("id",
 287                          "Identifier",
 288                          "The PSPP language identifier for the data associated "
 289                          "with this window (e.g. dataset name)",
 290                          NULL,
 291                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 292
 293   object_class->set_property = psppire_window_set_property;
 294   object_class->get_property = psppire_window_get_property;
 295
 296   g_object_class_install_property (object_class,
 297                                    PROP_DESCRIPTION,
 298                                    description_spec);
 299
 300   g_object_class_install_property (object_class,
 301                                    PROP_FILENAME,
 302                                    filename_spec);
 303
 304   g_object_class_install_property (object_class,
 305                                    PROP_ID,
 306                                    id_spec);
 307
 308   parent_class = g_type_class_peek_parent (class);
 309 }
 310
 311
 312 static void
 313 psppire_window_base_init (PsppireWindowClass *class)
 314 {
 315   GObjectClass *object_class = G_OBJECT_CLASS (class);
 316
 317   object_class->finalize = psppire_window_finalize;
 318 }
 319
 320
 321
 322 static void
 323 insert_menuitem_into_menu (PsppireWindow *window, gpointer key)
 324 {
 325   gchar *filename;
 326   GtkWidget *item;
 327   filename = g_filename_display_name (key);
 328   item = gtk_check_menu_item_new_with_label (filename);
 329   g_object_ref_sink (item);
 330   g_free (filename);
 331
 332   g_hash_table_insert (window->menuitem_table, key, item);
 333 }
 334
 335 static void
 336 insert_item (gpointer key, gpointer value, gpointer data)
 337 {
 338   PsppireWindow *window = PSPPIRE_WINDOW (data);
 339
 340   if (NULL != g_hash_table_lookup (window->menuitem_table, key))
 341     return;
 342
 343   insert_menuitem_into_menu (window, key);
 344 }
 345
 346 /* Insert a new item into the window menu */
 347 static void
 348 insert_menuitem (GObject *reg, const gchar *key, gpointer data)
 349 {
 350   PsppireWindow *window = PSPPIRE_WINDOW (data);
 351
 352   insert_menuitem_into_menu (window, (gpointer) key);
 353 }
 354
 355
 356 static void
 357 remove_menuitem (PsppireWindowRegister *reg, const gchar *key, gpointer data)
 358 {
 359   PsppireWindow *window = PSPPIRE_WINDOW (data);
 360   g_hash_table_remove (window->menuitem_table, key);
 361 }
 362
 363 static void
 364 insert_existing_items (PsppireWindow *window)
 365 {
 366   psppire_window_register_foreach (psppire_window_register_new (), insert_item, window);
 367 }
 368
 369
 370 static gboolean
 371 on_delete (PsppireWindow *w, GdkEvent *event, gpointer user_data)
 372 {
 373   PsppireWindowRegister *reg = psppire_window_register_new ();
 374
 375   if (w->edited != NULL)
 376     {
 377       gint response = psppire_window_query_save (w);
 378
 379       switch (response)
 380         {
 381         default:
 382         case GTK_RESPONSE_CANCEL:
 383           return TRUE;
 384           break;
 385         case GTK_RESPONSE_APPLY:
 386           psppire_window_save (w);
 387           if (w->edited != NULL)
 388             {
 389               /* Save failed, or user exited Save As dialog with Cancel. */
 390               return TRUE;
 391             }
 392           break;
 393         case GTK_RESPONSE_REJECT:
 394           break;
 395         }
 396     }
 397
 398   if (1 == psppire_window_register_n_items (reg))
 399     gtk_main_quit ();
 400
 401   return FALSE;
 402 }
 403
 404
 405 static void
 406 psppire_window_init (PsppireWindow *window)
 407 {
 408   window->filename = NULL;
 409   window->basename = NULL;
 410   window->id = NULL;
 411   window->description = NULL;
 412   window->list_name = NULL;
 413   window->edited = NULL;
 414
 415   window->menuitem_table  = g_hash_table_new_full (g_str_hash, g_str_equal,
 416                                                    NULL, g_object_unref);
 417
 418
 419   g_signal_connect (window,  "realize", G_CALLBACK (insert_existing_items), NULL);
 420
 421   PsppireWindowRegister *reg = psppire_window_register_new ();
 422   window->insert_handler = g_signal_connect (reg,
 423                                              "inserted",
 424                                              G_CALLBACK (insert_menuitem),
 425                                              window);
 426
 427   window->remove_handler = g_signal_connect (reg,
 428                                              "removed",
 429                                              G_CALLBACK (remove_menuitem),
 430                                              window);
 431
 432   window->added_separator = FALSE;
 433
 434   g_signal_connect_swapped (window, "delete-event", G_CALLBACK (on_delete), window);
 435
 436   g_object_set (window, "icon-name", "pspp", NULL);
 437 }
 438
 439 /*
 440    Ask the user if the buffer should be saved.
 441    Return the response.
 442 */
 443 gint
 444 psppire_window_query_save (PsppireWindow *se)
 445 {
 446   gint response;
 447   GtkWidget *dialog;
 448   GtkWidget *cancel_button;
 449
 450   gchar *description;
 451
 452   GDateTime *now = g_date_time_new_now_utc ();
 453   GTimeSpan timespan = g_date_time_difference (now, se->edited);
 454   g_date_time_unref (now);
 455
 456   if (se->filename)
 457     description = g_filename_display_basename (se->filename);
 458   else if (se->id)
 459     description = g_strdup (se->id);
 460   else
 461     description = g_strdup (se->description);
 462   dialog =
 463     gtk_message_dialog_new (GTK_WINDOW (se),
 464                             GTK_DIALOG_MODAL,
 465                             GTK_MESSAGE_WARNING,
 466                             GTK_BUTTONS_NONE,
 467                             _("Save the changes to `%s' before closing?"),
 468                             description);
 469   g_free (description);
 470
 471   g_object_set (dialog, "icon-name", "pspp", NULL);
 472
 473   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 474                                             _("If you don't save, changes from the last %ld seconds will be permanently lost."),
 475                                             timespan / G_TIME_SPAN_SECOND);
 476
 477   gtk_dialog_add_button  (GTK_DIALOG (dialog),
 478                           _("Close _without saving"),
 479                           GTK_RESPONSE_REJECT);
 480
 481   cancel_button = gtk_dialog_add_button  (GTK_DIALOG (dialog),
 482                                           _("Cancel"),
 483                                           GTK_RESPONSE_CANCEL);
 484
 485   gtk_dialog_add_button  (GTK_DIALOG (dialog),
 486                           _("Save"),
 487                           GTK_RESPONSE_APPLY);
 488
 489   gtk_widget_grab_focus (cancel_button);
 490
 491   response = gtk_dialog_run (GTK_DIALOG (dialog));
 492
 493   gtk_widget_destroy (dialog);
 494
 495   return response;
 496 }
 497
 498
 499 /* The return value is encoded in the glib filename encoding. */
 500 const gchar *
 501 psppire_window_get_filename (PsppireWindow *w)
 502 {
 503   return w->filename;
 504 }
 505
 506
 507 /* FILENAME must be encoded in the glib filename encoding. */
 508 void
 509 psppire_window_set_filename (PsppireWindow *w, const gchar *filename)
 510 {
 511   g_object_set (w, "filename", filename, NULL);
 512 }
 513
 514 void
 515 psppire_window_set_unsaved (PsppireWindow *w)
 516 {
 517   if (w->edited == NULL)
 518     w->edited = g_date_time_new_now_utc ();
 519
 520   psppire_window_set_title (w);
 521 }
 522
 523 gboolean
 524 psppire_window_get_unsaved (PsppireWindow *w)
 525 {
 526   return w->edited != NULL;
 527 }
 528
 529
 530 \f
 531
 532
 533 static void
 534 minimise_window (gpointer key, gpointer value, gpointer data)
 535 {
 536   gtk_window_iconify (GTK_WINDOW (value));
 537 }
 538
 539
 540 void
 541 psppire_window_minimise_all (void)
 542 {
 543   PsppireWindowRegister *reg = psppire_window_register_new ();
 544
 545   g_hash_table_foreach (reg->name_table, minimise_window, NULL);
 546 }
 547
 548
 549 \f
 550
 551 GType
 552 psppire_window_model_get_type (void)
 553 {
 554   static GType window_model_type = 0;
 555
 556   if (! window_model_type)
 557     {
 558       static const GTypeInfo window_model_info =
 559       {
 560         sizeof (PsppireWindowIface), /* class_size */
 561         NULL,           /* base_init */
 562         NULL,           /* base_finalize */
 563         NULL,
 564         NULL,           /* class_finalize */
 565         NULL,           /* class_data */
 566         0,
 567         0,              /* n_preallocs */
 568         NULL
 569       };
 570
 571       window_model_type =
 572         g_type_register_static (G_TYPE_INTERFACE, "PsppireWindowModel",
 573                                 &window_model_info, 0);
 574
 575       g_type_interface_add_prerequisite (window_model_type, G_TYPE_OBJECT);
 576     }
 577
 578   return window_model_type;
 579 }
 580
 581
 582 void
 583 psppire_window_save (PsppireWindow *w)
 584 {
 585   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 586
 587   g_assert (i);
 588   g_return_if_fail (i->save);
 589
 590   if (w->filename == NULL)
 591     psppire_window_save_as (w);
 592   else
 593     {
 594       i->save (w);
 595       if (w->edited)
 596         g_date_time_unref (w->edited);
 597       w->edited = NULL;
 598
 599       psppire_window_set_title (w);
 600     }
 601 }
 602
 603 void
 604 psppire_window_save_as (PsppireWindow *w)
 605 {
 606   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 607   gchar *old_filename;
 608
 609   g_assert (i);
 610   g_return_if_fail (i->pick_filename);
 611
 612   old_filename = w->filename;
 613   w->filename = NULL;
 614
 615   i->pick_filename (w);
 616   if (w->filename == NULL)
 617     w->filename = old_filename;
 618   else
 619     {
 620       g_free (old_filename);
 621       psppire_window_save (w);
 622     }
 623 }
 624
 625 static void delete_recent (const char *file_name);
 626
 627 gboolean
 628 psppire_window_load (PsppireWindow *w, const gchar *file,
 629                      const gchar *encoding, gpointer hint)
 630 {
 631   gboolean ok;
 632   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 633
 634   g_assert (PSPPIRE_IS_WINDOW_MODEL (w));
 635
 636   g_assert (i);
 637
 638   g_return_val_if_fail (i->load, FALSE);
 639
 640   ok = i->load (w, file, encoding, hint);
 641
 642   if (ok)
 643     {
 644       psppire_window_set_filename (w, file);
 645       if (w->edited)
 646         g_date_time_unref (w->edited);
 647       w->edited = NULL;
 648     }
 649   else
 650     delete_recent (file);
 651
 652   return ok;
 653 }
 654
 655
 656 GtkWidget *
 657 psppire_window_file_chooser_dialog (PsppireWindow *toplevel)
 658 {
 659   GtkFileFilter *filter = gtk_file_filter_new ();
 660   GtkWidget *dialog =
 661     gtk_file_chooser_dialog_new (_("Open"),
 662                                  GTK_WINDOW (toplevel),
 663                                  GTK_FILE_CHOOSER_ACTION_OPEN,
 664                                  _("Cancel"), GTK_RESPONSE_CANCEL,
 665                                  _("Open"), GTK_RESPONSE_ACCEPT,
 666                                  NULL);
 667
 668   g_object_set (dialog, "local-only", FALSE, NULL);
 669
 670   gtk_file_filter_set_name (filter, _("Data and Syntax Files"));
 671   gtk_file_filter_add_mime_type (filter, "application/x-spss-sav");
 672   gtk_file_filter_add_mime_type (filter, "application/x-spss-por");
 673   gtk_file_filter_add_mime_type (filter, "application/x-spss-spv");
 674   gtk_file_filter_add_pattern (filter, "*.zsav");
 675   gtk_file_filter_add_pattern (filter, "*.sps");
 676   gtk_file_filter_add_pattern (filter, "*.SPS");
 677   gtk_file_filter_add_pattern (filter, "*.spv");
 678   gtk_file_filter_add_pattern (filter, "*.SPV");
 679   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 680
 681   filter = gtk_file_filter_new ();
 682   gtk_file_filter_set_name (filter, _("System Files (*.sav, *.zsav)"));
 683   gtk_file_filter_add_mime_type (filter, "application/x-spss-sav");
 684   gtk_file_filter_add_pattern (filter, "*.zsav");
 685   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 686
 687   filter = gtk_file_filter_new ();
 688   gtk_file_filter_set_name (filter, _("Portable Files (*.por) "));
 689   gtk_file_filter_add_mime_type (filter, "application/x-spss-por");
 690   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 691
 692   filter = gtk_file_filter_new ();
 693   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 694   gtk_file_filter_add_pattern (filter, "*.sps");
 695   gtk_file_filter_add_pattern (filter, "*.SPS");
 696   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 697
 698   filter = gtk_file_filter_new ();
 699   gtk_file_filter_set_name (filter, _("Output Files (*.spv) "));
 700   gtk_file_filter_add_pattern (filter, "*.spv");
 701   gtk_file_filter_add_pattern (filter, "*.SPV");
 702   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 703
 704   filter = gtk_file_filter_new ();
 705   gtk_file_filter_set_name (filter, _("All Files"));
 706   gtk_file_filter_add_pattern (filter, "*");
 707   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 708
 709   if (toplevel->filename)
 710     {
 711       const gchar *filename = toplevel->filename;
 712       gchar *dir_name;
 713
 714       if (! g_path_is_absolute (filename))
 715         {
 716           gchar *path =
 717             g_build_filename (g_get_current_dir (), filename, NULL);
 718           dir_name = g_path_get_dirname (path);
 719           g_free (path);
 720         }
 721       else
 722         {
 723           dir_name = g_path_get_dirname (filename);
 724         }
 725       gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog),
 726                                            dir_name);
 727       free (dir_name);
 728     }
 729
 730     gtk_file_chooser_set_extra_widget (
 731       GTK_FILE_CHOOSER (dialog),
 732       psppire_encoding_selector_new ("Auto", true));
 733
 734   return dialog;
 735 }
 736
 737 struct item_path
 738   {
 739     const struct spv_item **nodes;
 740     size_t n;
 741
 742 #define N_STUB 10
 743     const struct spv_item *stub[N_STUB];
 744   };
 745
 746 static void
 747 swap_nodes (const struct spv_item **a, const struct spv_item **b)
 748 {
 749   const struct spv_item *tmp = *a;
 750   *a = *b;
 751   *b = tmp;
 752 }
 753
 754 static void
 755 get_path (const struct spv_item *item, struct item_path *path)
 756 {
 757   size_t allocated = 10;
 758   path->nodes = path->stub;
 759   path->n = 0;
 760
 761   while (item)
 762     {
 763       if (path->n >= allocated)
 764         {
 765           if (path->nodes == path->stub)
 766             path->nodes = xmemdup (path->stub, sizeof path->stub);
 767           path->nodes = x2nrealloc (path->nodes, &allocated,
 768                                     sizeof *path->nodes);
 769         }
 770       path->nodes[path->n++] = item;
 771       item = item->parent;
 772     }
 773
 774   for (size_t i = 0; i < path->n / 2; i++)
 775     swap_nodes (&path->nodes[i], &path->nodes[path->n - i - 1]);
 776 }
 777
 778 static void
 779 free_path (struct item_path *path)
 780 {
 781   if (path && path->nodes != path->stub)
 782     free (path->nodes);
 783 }
 784
 785 static void
 786 dump_heading_transition (const struct spv_item *old,
 787                          const struct spv_item *new)
 788 {
 789   if (old == new)
 790     return;
 791
 792   struct item_path old_path, new_path;
 793   get_path (old, &old_path);
 794   get_path (new, &new_path);
 795
 796   size_t common = 0;
 797   for (; common < old_path.n && common < new_path.n; common++)
 798     if (old_path.nodes[common] != new_path.nodes[common])
 799       break;
 800
 801   for (size_t i = common; i < old_path.n; i++)
 802     group_close_item_submit (group_close_item_create ());
 803   for (size_t i = common; i < new_path.n; i++)
 804     group_open_item_submit (group_open_item_create (
 805                               new_path.nodes[i]->command_id));
 806
 807   free_path (&old_path);
 808   free_path (&new_path);
 809 }
 810
 811 void
 812 read_spv_file (const char *filename)
 813 {
 814   struct spv_reader *spv;
 815   char *error = spv_open (filename, &spv);
 816   if (error)
 817     {
 818       /* XXX */
 819       fprintf (stderr, "%s\n", error);
 820       return;
 821     }
 822
 823   struct spv_item **items;
 824   size_t n_items;
 825   spv_select (spv, NULL, 0, &items, &n_items);
 826   struct spv_item *prev_heading = spv_get_root (spv);
 827   for (size_t i = 0; i < n_items; i++)
 828     {
 829       struct spv_item *heading
 830         = items[i]->type == SPV_ITEM_HEADING ? items[i] : items[i]->parent;
 831       dump_heading_transition (prev_heading, heading);
 832       if (items[i]->type == SPV_ITEM_TEXT)
 833         spv_text_submit (items[i]);
 834       else if (items[i]->type == SPV_ITEM_TABLE)
 835         pivot_table_submit (spv_item_get_table (items[i]));
 836       prev_heading = heading;
 837     }
 838   dump_heading_transition (prev_heading, spv_get_root (spv));
 839   free (items);
 840   spv_close (spv);
 841 }
 842
 843 /* Callback for the file_open action.
 844    Prompts for a filename and opens it */
 845 void
 846 psppire_window_open (PsppireWindow *de)
 847 {
 848   GtkWidget *dialog = psppire_window_file_chooser_dialog (de);
 849
 850   gtk_file_chooser_add_shortcut_folder (GTK_FILE_CHOOSER (dialog), relocate (examples_dir), NULL);
 851
 852   switch (gtk_dialog_run (GTK_DIALOG (dialog)))
 853     {
 854     case GTK_RESPONSE_ACCEPT:
 855       {
 856         gchar *name =
 857           gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
 858
 859         const gchar **cs = NULL;
 860         g_get_filename_charsets (&cs);
 861
 862         gchar *encoding = psppire_encoding_selector_get_encoding (
 863           gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 864
 865         struct file_handle *fh = fh_create_file (NULL, name, cs[0], fh_default_properties ());
 866
 867         int retval = any_reader_detect (fh, NULL);
 868         if (retval == 1)
 869           open_data_window (de, name, encoding, NULL);
 870         else if (retval == 0)
 871           {
 872             char *error = spv_detect (name);
 873             if (!error)
 874               read_spv_file (name);
 875             else
 876               {
 877                 free (error);
 878                 open_syntax_window (name, encoding);
 879               }
 880           }
 881
 882         g_free (encoding);
 883         fh_unref (fh);
 884         g_free (name);
 885       }
 886       break;
 887     default:
 888       break;
 889     }
 890
 891   gtk_widget_destroy (dialog);
 892 }
 893
 894
 895 /* Puts FILE_NAME (encoded in the glib file name encoding) into the recent list
 896    with associated MIME_TYPE.  If it's already in the list, it moves it to the
 897    top. */
 898 void
 899 add_most_recent (const char *file_name,
 900                  const char *mime_type, const char *encoding)
 901 {
 902   gchar *uri = g_filename_to_uri  (file_name, NULL, NULL);
 903   if (uri)
 904     {
 905       GtkRecentData recent_data;
 906       gchar *full_mime_type;
 907
 908       if (encoding && encoding[0])
 909         full_mime_type = g_strdup_printf ("%s; charset=%s",
 910                                           mime_type, encoding);
 911       else
 912         full_mime_type = g_strdup (mime_type);
 913
 914       recent_data.display_name = NULL;
 915       recent_data.description = NULL;
 916       recent_data.mime_type = full_mime_type;
 917       recent_data.app_name = CONST_CAST (gchar *, g_get_application_name ());
 918       recent_data.app_exec = g_strjoin (" ", g_get_prgname (), "%u", NULL);
 919       recent_data.groups = NULL;
 920       recent_data.is_private = FALSE;
 921
 922       gtk_recent_manager_add_full (gtk_recent_manager_get_default (),
 923                                    uri, &recent_data);
 924
 925       g_free (recent_data.app_exec);
 926       g_free (full_mime_type);
 927     }
 928
 929   g_free (uri);
 930 }
 931
 932
 933
 934 /*
 935    If FILE_NAME exists in the recent list, then  delete it.
 936  */
 937 static void
 938 delete_recent (const char *file_name)
 939 {
 940   gchar *uri = g_filename_to_uri  (file_name, NULL, NULL);
 941
 942   if (uri)
 943     gtk_recent_manager_remove_item (gtk_recent_manager_get_default (), uri, NULL);
 944
 945   g_free (uri);
 946 }
 947