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) (void (*)(void)) psppire_window_base_init,
  65         (GBaseFinalizeFunc) NULL,
  66         (GClassInitFunc) (void (*)(void)) psppire_window_class_init,
  67         (GClassFinalizeFunc) NULL,
  68         NULL,
  69         sizeof (PsppireWindow),
  70         0,
  71         (GInstanceInitFunc) (void (*)(void)) psppire_window_init,
  72         NULL /* value_table */
  73       };
  74
  75       psppire_window_type =
  76         g_type_register_static (PSPPIRE_TYPE_WINDOW_BASE, "PsppireWindow",
  77                                 &psppire_window_info, G_TYPE_FLAG_ABSTRACT);
  78     }
  79
  80   return psppire_window_type;
  81 }
  82
  83
  84 /* Properties */
  85 enum
  86 {
  87   PROP_0,
  88   PROP_FILENAME,
  89   PROP_DESCRIPTION,
  90   PROP_ID
  91 };
  92
  93
  94 static void
  95 psppire_window_set_title (PsppireWindow *window)
  96 {
  97   GString *title = g_string_sized_new (80);
  98
  99   if (window->edited != NULL)
 100     g_string_append_c (title, '*');
 101
 102   if (window->basename || window->id)
 103     {
 104       if (window->basename)
 105         g_string_append_printf (title, "%s ", window->basename);
 106
 107       if (window->id)
 108         g_string_append_printf (title, "[%s] ", window->id);
 109
 110       g_string_append_unichar (title, 0x2014); /* em dash */
 111       g_string_append_c (title, ' '); /* em dash */
 112     }
 113
 114   g_string_append_printf (title, "PSPPIRE %s", window->description);
 115
 116   int minor = 1;
 117   sscanf (bare_version, "%*d.%d.%*d", &minor);
 118   if (minor % 2)
 119     g_string_append_printf (title, " - Test version! Please report bugs to %s", PACKAGE_BUGREPORT);
 120
 121   gtk_window_set_title (GTK_WINDOW (window), title->str);
 122
 123   g_string_free (title, TRUE);
 124 }
 125
 126 static void
 127 psppire_window_update_list_name (PsppireWindow *window)
 128 {
 129   PsppireWindowRegister *reg = psppire_window_register_new ();
 130   GString *candidate = g_string_sized_new (80);
 131   int n;
 132
 133   n = 1;
 134   do
 135     {
 136       /* Compose a name. */
 137       g_string_truncate (candidate, 0);
 138       if (window->filename)
 139         {
 140           gchar *display_filename = g_filename_display_name (window->filename);
 141           g_string_append (candidate, display_filename);
 142           g_free (display_filename);
 143
 144           if (window->id)
 145             g_string_append_printf (candidate, " [%s]", window->id);
 146         }
 147       else if (window->id)
 148         g_string_append_printf (candidate, "[%s]", window->id);
 149       else
 150         g_string_append (candidate, window->description);
 151
 152       if (n++ > 1)
 153         g_string_append_printf (candidate, " #%d", n);
 154
 155       if (window->list_name && !strcmp (candidate->str, window->list_name))
 156         {
 157           /* Keep the existing name. */
 158           g_string_free (candidate, TRUE);
 159           return;
 160         }
 161     }
 162   while (psppire_window_register_lookup (reg, candidate->str));
 163
 164   if (window->list_name)
 165     psppire_window_register_remove (reg, window->list_name);
 166
 167   g_free (window->list_name);
 168   window->list_name = g_string_free (candidate, FALSE);
 169
 170   psppire_window_register_insert (reg, window, window->list_name);
 171 }
 172
 173 static void
 174 psppire_window_name_changed (PsppireWindow *window)
 175 {
 176   psppire_window_set_title (window);
 177   psppire_window_update_list_name (window);
 178 }
 179
 180 static void
 181 psppire_window_set_property (GObject         *object,
 182                              guint            prop_id,
 183                              const GValue    *value,
 184                              GParamSpec      *pspec)
 185 {
 186   PsppireWindow *window = PSPPIRE_WINDOW (object);
 187
 188   switch (prop_id)
 189     {
 190     case PROP_DESCRIPTION:
 191       g_free (window->description);
 192       window->description = g_value_dup_string (value);
 193       psppire_window_set_title (window);
 194       break;
 195     case PROP_FILENAME:
 196       g_free (window->filename);
 197       window->filename = g_value_dup_string (value);
 198       g_free (window->basename);
 199       window->basename = (window->filename
 200                           ? g_filename_display_basename (window->filename)
 201                           : NULL);
 202       psppire_window_name_changed (window);
 203       break;
 204     case PROP_ID:
 205       g_free (window->id);
 206       window->id = g_value_dup_string (value);
 207       psppire_window_name_changed (window);
 208       break;
 209     default:
 210       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 211       break;
 212     };
 213 }
 214
 215
 216 static void
 217 psppire_window_get_property (GObject         *object,
 218                              guint            prop_id,
 219                              GValue          *value,
 220                              GParamSpec      *pspec)
 221 {
 222   PsppireWindow *window = PSPPIRE_WINDOW (object);
 223
 224   switch (prop_id)
 225     {
 226     case PROP_FILENAME:
 227       g_value_set_string (value, window->filename);
 228       break;
 229     case PROP_DESCRIPTION:
 230       g_value_set_string (value, window->description);
 231       break;
 232     case PROP_ID:
 233       g_value_set_string (value, window->id);
 234       break;
 235     default:
 236       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 237       break;
 238     };
 239 }
 240
 241
 242 static void
 243 psppire_window_finalize (GObject *object)
 244 {
 245   PsppireWindow *window = PSPPIRE_WINDOW (object);
 246
 247   PsppireWindowRegister *reg = psppire_window_register_new ();
 248
 249   if (window->edited)
 250     g_date_time_unref (window->edited);
 251
 252   g_signal_handler_disconnect (reg, window->remove_handler);
 253   g_signal_handler_disconnect (reg, window->insert_handler);
 254   psppire_window_register_remove (reg, window->list_name);
 255   g_free (window->filename);
 256   g_free (window->basename);
 257   g_free (window->id);
 258   g_free (window->description);
 259   g_free (window->list_name);
 260
 261   g_hash_table_destroy (window->menuitem_table);
 262
 263   if (G_OBJECT_CLASS (parent_class)->finalize)
 264     G_OBJECT_CLASS (parent_class)->finalize (object);
 265 }
 266
 267 static void
 268 psppire_window_class_init (PsppireWindowClass *class)
 269 {
 270   GObjectClass *object_class = G_OBJECT_CLASS (class);
 271
 272   GParamSpec *description_spec =
 273     null_if_empty_param ("description",
 274                        "Description",
 275                        "A string describing the usage of the window",
 276                          NULL, /*Should be overridden by derived classes */
 277                        G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
 278
 279   GParamSpec *filename_spec =
 280     null_if_empty_param ("filename",
 281                        "File name",
 282                        "The name of the file associated with this window, if any",
 283                          NULL,
 284                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 285
 286   GParamSpec *id_spec =
 287     null_if_empty_param ("id",
 288                          "Identifier",
 289                          "The PSPP language identifier for the data associated "
 290                          "with this window (e.g. dataset name)",
 291                          NULL,
 292                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 293
 294   object_class->set_property = psppire_window_set_property;
 295   object_class->get_property = psppire_window_get_property;
 296
 297   g_object_class_install_property (object_class,
 298                                    PROP_DESCRIPTION,
 299                                    description_spec);
 300
 301   g_object_class_install_property (object_class,
 302                                    PROP_FILENAME,
 303                                    filename_spec);
 304
 305   g_object_class_install_property (object_class,
 306                                    PROP_ID,
 307                                    id_spec);
 308
 309   parent_class = g_type_class_peek_parent (class);
 310 }
 311
 312
 313 static void
 314 psppire_window_base_init (PsppireWindowClass *class)
 315 {
 316   GObjectClass *object_class = G_OBJECT_CLASS (class);
 317
 318   object_class->finalize = psppire_window_finalize;
 319 }
 320
 321
 322
 323 static void
 324 insert_menuitem_into_menu (PsppireWindow *window, gpointer key)
 325 {
 326   gchar *filename;
 327   GtkWidget *item;
 328   filename = g_filename_display_name (key);
 329   item = gtk_check_menu_item_new_with_label (filename);
 330   g_object_ref_sink (item);
 331   g_free (filename);
 332
 333   g_hash_table_insert (window->menuitem_table, key, item);
 334 }
 335
 336 static void
 337 insert_item (gpointer key, gpointer value, gpointer data)
 338 {
 339   PsppireWindow *window = PSPPIRE_WINDOW (data);
 340
 341   if (NULL != g_hash_table_lookup (window->menuitem_table, key))
 342     return;
 343
 344   insert_menuitem_into_menu (window, key);
 345 }
 346
 347 /* Insert a new item into the window menu */
 348 static void
 349 insert_menuitem (GObject *reg, const gchar *key, gpointer data)
 350 {
 351   PsppireWindow *window = PSPPIRE_WINDOW (data);
 352
 353   insert_menuitem_into_menu (window, (gpointer) key);
 354 }
 355
 356
 357 static void
 358 remove_menuitem (PsppireWindowRegister *reg, const gchar *key, gpointer data)
 359 {
 360   PsppireWindow *window = PSPPIRE_WINDOW (data);
 361   g_hash_table_remove (window->menuitem_table, key);
 362 }
 363
 364 static void
 365 insert_existing_items (PsppireWindow *window)
 366 {
 367   psppire_window_register_foreach (psppire_window_register_new (), insert_item, window);
 368 }
 369
 370
 371 static gboolean
 372 on_delete (PsppireWindow *w, GdkEvent *event, gpointer user_data)
 373 {
 374   PsppireWindowRegister *reg = psppire_window_register_new ();
 375
 376   if (w->edited != NULL)
 377     {
 378       gint response = psppire_window_query_save (w);
 379
 380       switch (response)
 381         {
 382         default:
 383         case GTK_RESPONSE_CANCEL:
 384           return TRUE;
 385           break;
 386         case GTK_RESPONSE_APPLY:
 387           psppire_window_save (w);
 388           if (w->edited != NULL)
 389             {
 390               /* Save failed, or user exited Save As dialog with Cancel. */
 391               return TRUE;
 392             }
 393           break;
 394         case GTK_RESPONSE_REJECT:
 395           break;
 396         }
 397     }
 398
 399   if (1 == psppire_window_register_n_items (reg))
 400     gtk_main_quit ();
 401
 402   return FALSE;
 403 }
 404
 405
 406 static void
 407 psppire_window_init (PsppireWindow *window)
 408 {
 409   window->filename = NULL;
 410   window->basename = NULL;
 411   window->id = NULL;
 412   window->description = NULL;
 413   window->list_name = NULL;
 414   window->edited = NULL;
 415
 416   window->menuitem_table  = g_hash_table_new_full (g_str_hash, g_str_equal,
 417                                                    NULL, g_object_unref);
 418
 419
 420   g_signal_connect (window,  "realize", G_CALLBACK (insert_existing_items), NULL);
 421
 422   PsppireWindowRegister *reg = psppire_window_register_new ();
 423   window->insert_handler = g_signal_connect (reg,
 424                                              "inserted",
 425                                              G_CALLBACK (insert_menuitem),
 426                                              window);
 427
 428   window->remove_handler = g_signal_connect (reg,
 429                                              "removed",
 430                                              G_CALLBACK (remove_menuitem),
 431                                              window);
 432
 433   window->added_separator = FALSE;
 434
 435   g_signal_connect_swapped (window, "delete-event", G_CALLBACK (on_delete), window);
 436
 437   g_object_set (window, "icon-name", "pspp", NULL);
 438 }
 439
 440 /*
 441    Ask the user if the buffer should be saved.
 442    Return the response.
 443 */
 444 gint
 445 psppire_window_query_save (PsppireWindow *se)
 446 {
 447   gint response;
 448   GtkWidget *dialog;
 449   GtkWidget *cancel_button;
 450
 451   gchar *description;
 452
 453   GDateTime *now = g_date_time_new_now_utc ();
 454   GTimeSpan timespan = g_date_time_difference (now, se->edited);
 455   g_date_time_unref (now);
 456
 457   if (se->filename)
 458     description = g_filename_display_basename (se->filename);
 459   else if (se->id)
 460     description = g_strdup (se->id);
 461   else
 462     description = g_strdup (se->description);
 463   dialog =
 464     gtk_message_dialog_new (GTK_WINDOW (se),
 465                             GTK_DIALOG_MODAL,
 466                             GTK_MESSAGE_WARNING,
 467                             GTK_BUTTONS_NONE,
 468                             _("Save the changes to `%s' before closing?"),
 469                             description);
 470   g_free (description);
 471
 472   g_object_set (dialog, "icon-name", "pspp", NULL);
 473
 474   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 475                                             _("If you don't save, changes from the last %ld seconds will be permanently lost."),
 476                                             timespan / G_TIME_SPAN_SECOND);
 477
 478   gtk_dialog_add_button  (GTK_DIALOG (dialog),
 479                           _("Close _without saving"),
 480                           GTK_RESPONSE_REJECT);
 481
 482   cancel_button = gtk_dialog_add_button  (GTK_DIALOG (dialog),
 483                                           _("Cancel"),
 484                                           GTK_RESPONSE_CANCEL);
 485
 486   gtk_dialog_add_button  (GTK_DIALOG (dialog),
 487                           _("Save"),
 488                           GTK_RESPONSE_APPLY);
 489
 490   gtk_widget_grab_focus (cancel_button);
 491
 492   response = gtk_dialog_run (GTK_DIALOG (dialog));
 493
 494   gtk_widget_destroy (dialog);
 495
 496   return response;
 497 }
 498
 499
 500 /* The return value is encoded in the glib filename encoding. */
 501 const gchar *
 502 psppire_window_get_filename (PsppireWindow *w)
 503 {
 504   return w->filename;
 505 }
 506
 507
 508 /* FILENAME must be encoded in the glib filename encoding. */
 509 void
 510 psppire_window_set_filename (PsppireWindow *w, const gchar *filename)
 511 {
 512   g_object_set (w, "filename", filename, NULL);
 513 }
 514
 515 void
 516 psppire_window_set_unsaved (PsppireWindow *w)
 517 {
 518   if (w->edited == NULL)
 519     w->edited = g_date_time_new_now_utc ();
 520
 521   psppire_window_set_title (w);
 522 }
 523
 524 gboolean
 525 psppire_window_get_unsaved (PsppireWindow *w)
 526 {
 527   return w->edited != NULL;
 528 }
 529
 530
 531 \f
 532
 533
 534 static void
 535 minimise_window (gpointer key, gpointer value, gpointer data)
 536 {
 537   gtk_window_iconify (GTK_WINDOW (value));
 538 }
 539
 540
 541 void
 542 psppire_window_minimise_all (void)
 543 {
 544   PsppireWindowRegister *reg = psppire_window_register_new ();
 545
 546   g_hash_table_foreach (reg->name_table, minimise_window, NULL);
 547 }
 548
 549
 550 \f
 551
 552 GType
 553 psppire_window_model_get_type (void)
 554 {
 555   static GType window_model_type = 0;
 556
 557   if (! window_model_type)
 558     {
 559       static const GTypeInfo window_model_info =
 560       {
 561         sizeof (PsppireWindowIface), /* class_size */
 562         NULL,           /* base_init */
 563         NULL,           /* base_finalize */
 564         NULL,
 565         NULL,           /* class_finalize */
 566         NULL,           /* class_data */
 567         0,
 568         0,              /* n_preallocs */
 569         NULL,
 570         NULL            /* value_table */
 571       };
 572
 573       window_model_type =
 574         g_type_register_static (G_TYPE_INTERFACE, "PsppireWindowModel",
 575                                 &window_model_info, 0);
 576
 577       g_type_interface_add_prerequisite (window_model_type, G_TYPE_OBJECT);
 578     }
 579
 580   return window_model_type;
 581 }
 582
 583
 584 void
 585 psppire_window_save (PsppireWindow *w)
 586 {
 587   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 588
 589   g_assert (i);
 590   g_return_if_fail (i->save);
 591
 592   if (w->filename == NULL)
 593     psppire_window_save_as (w);
 594   else
 595     {
 596       i->save (w);
 597       if (w->edited)
 598         g_date_time_unref (w->edited);
 599       w->edited = NULL;
 600
 601       psppire_window_set_title (w);
 602     }
 603 }
 604
 605 void
 606 psppire_window_save_as (PsppireWindow *w)
 607 {
 608   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 609   gchar *old_filename;
 610
 611   g_assert (i);
 612   g_return_if_fail (i->pick_filename);
 613
 614   old_filename = w->filename;
 615   w->filename = NULL;
 616
 617   i->pick_filename (w);
 618   if (w->filename == NULL)
 619     w->filename = old_filename;
 620   else
 621     {
 622       g_free (old_filename);
 623       psppire_window_save (w);
 624     }
 625 }
 626
 627 static void delete_recent (const char *file_name);
 628
 629 gboolean
 630 psppire_window_load (PsppireWindow *w, const gchar *file,
 631                      const gchar *encoding, gpointer hint)
 632 {
 633   gboolean ok;
 634   PsppireWindowIface *i = PSPPIRE_WINDOW_MODEL_GET_IFACE (w);
 635
 636   g_assert (PSPPIRE_IS_WINDOW_MODEL (w));
 637
 638   g_assert (i);
 639
 640   g_return_val_if_fail (i->load, FALSE);
 641
 642   ok = i->load (w, file, encoding, hint);
 643
 644   if (ok)
 645     {
 646       psppire_window_set_filename (w, file);
 647       if (w->edited)
 648         g_date_time_unref (w->edited);
 649       w->edited = NULL;
 650     }
 651   else
 652     delete_recent (file);
 653
 654   return ok;
 655 }
 656
 657
 658 GtkWidget *
 659 psppire_window_file_chooser_dialog (PsppireWindow *toplevel)
 660 {
 661   GtkFileFilter *filter = gtk_file_filter_new ();
 662   GtkWidget *dialog =
 663     gtk_file_chooser_dialog_new (_("Open"),
 664                                  GTK_WINDOW (toplevel),
 665                                  GTK_FILE_CHOOSER_ACTION_OPEN,
 666                                  _("Cancel"), GTK_RESPONSE_CANCEL,
 667                                  _("Open"), GTK_RESPONSE_ACCEPT,
 668                                  NULL);
 669
 670   g_object_set (dialog, "local-only", FALSE, NULL);
 671
 672   gtk_file_filter_set_name (filter, _("Data and Syntax Files"));
 673   gtk_file_filter_add_mime_type (filter, "application/x-spss-sav");
 674   gtk_file_filter_add_mime_type (filter, "application/x-spss-por");
 675   gtk_file_filter_add_mime_type (filter, "application/x-spss-spv");
 676   gtk_file_filter_add_pattern (filter, "*.zsav");
 677   gtk_file_filter_add_pattern (filter, "*.sps");
 678   gtk_file_filter_add_pattern (filter, "*.SPS");
 679   gtk_file_filter_add_pattern (filter, "*.spv");
 680   gtk_file_filter_add_pattern (filter, "*.SPV");
 681   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 682
 683   filter = gtk_file_filter_new ();
 684   gtk_file_filter_set_name (filter, _("System Files (*.sav, *.zsav)"));
 685   gtk_file_filter_add_mime_type (filter, "application/x-spss-sav");
 686   gtk_file_filter_add_pattern (filter, "*.zsav");
 687   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 688
 689   filter = gtk_file_filter_new ();
 690   gtk_file_filter_set_name (filter, _("Portable Files (*.por) "));
 691   gtk_file_filter_add_mime_type (filter, "application/x-spss-por");
 692   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 693
 694   filter = gtk_file_filter_new ();
 695   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 696   gtk_file_filter_add_pattern (filter, "*.sps");
 697   gtk_file_filter_add_pattern (filter, "*.SPS");
 698   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 699
 700   filter = gtk_file_filter_new ();
 701   gtk_file_filter_set_name (filter, _("Output Files (*.spv) "));
 702   gtk_file_filter_add_pattern (filter, "*.spv");
 703   gtk_file_filter_add_pattern (filter, "*.SPV");
 704   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 705
 706   filter = gtk_file_filter_new ();
 707   gtk_file_filter_set_name (filter, _("All Files"));
 708   gtk_file_filter_add_pattern (filter, "*");
 709   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 710
 711   if (toplevel->filename)
 712     {
 713       const gchar *filename = toplevel->filename;
 714       gchar *dir_name;
 715
 716       if (! g_path_is_absolute (filename))
 717         {
 718           gchar *path =
 719             g_build_filename (g_get_current_dir (), filename, NULL);
 720           dir_name = g_path_get_dirname (path);
 721           g_free (path);
 722         }
 723       else
 724         {
 725           dir_name = g_path_get_dirname (filename);
 726         }
 727       gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog),
 728                                            dir_name);
 729       free (dir_name);
 730     }
 731
 732     gtk_file_chooser_set_extra_widget (
 733       GTK_FILE_CHOOSER (dialog),
 734       psppire_encoding_selector_new ("Auto", true));
 735
 736   return dialog;
 737 }
 738
 739 struct item_path
 740   {
 741     const struct spv_item **nodes;
 742     size_t n;
 743
 744 #define N_STUB 10
 745     const struct spv_item *stub[N_STUB];
 746   };
 747
 748 static void
 749 swap_nodes (const struct spv_item **a, const struct spv_item **b)
 750 {
 751   const struct spv_item *tmp = *a;
 752   *a = *b;
 753   *b = tmp;
 754 }
 755
 756 static void
 757 get_path (const struct spv_item *item, struct item_path *path)
 758 {
 759   size_t allocated = 10;
 760   path->nodes = path->stub;
 761   path->n = 0;
 762
 763   while (item)
 764     {
 765       if (path->n >= allocated)
 766         {
 767           if (path->nodes == path->stub)
 768             path->nodes = xmemdup (path->stub, sizeof path->stub);
 769           path->nodes = x2nrealloc (path->nodes, &allocated,
 770                                     sizeof *path->nodes);
 771         }
 772       path->nodes[path->n++] = item;
 773       item = item->parent;
 774     }
 775
 776   for (size_t i = 0; i < path->n / 2; i++)
 777     swap_nodes (&path->nodes[i], &path->nodes[path->n - i - 1]);
 778 }
 779
 780 static void
 781 free_path (struct item_path *path)
 782 {
 783   if (path && path->nodes != path->stub)
 784     free (path->nodes);
 785 }
 786
 787 static void
 788 dump_heading_transition (const struct spv_item *old,
 789                          const struct spv_item *new)
 790 {
 791   if (old == new)
 792     return;
 793
 794   struct item_path old_path, new_path;
 795   get_path (old, &old_path);
 796   get_path (new, &new_path);
 797
 798   size_t common = 0;
 799   for (; common < old_path.n && common < new_path.n; common++)
 800     if (old_path.nodes[common] != new_path.nodes[common])
 801       break;
 802
 803   for (size_t i = common; i < old_path.n; i++)
 804     group_close_item_submit (group_close_item_create ());
 805   for (size_t i = common; i < new_path.n; i++)
 806     group_open_item_submit (group_open_item_create (
 807                               new_path.nodes[i]->command_id));
 808
 809   free_path (&old_path);
 810   free_path (&new_path);
 811 }
 812
 813 void
 814 read_spv_file (const char *filename)
 815 {
 816   struct spv_reader *spv;
 817   char *error = spv_open (filename, &spv);
 818   if (error)
 819     {
 820       /* XXX */
 821       fprintf (stderr, "%s\n", error);
 822       return;
 823     }
 824
 825   struct spv_item **items;
 826   size_t n_items;
 827   spv_select (spv, NULL, 0, &items, &n_items);
 828   struct spv_item *prev_heading = spv_get_root (spv);
 829   for (size_t i = 0; i < n_items; i++)
 830     {
 831       struct spv_item *heading
 832         = items[i]->type == SPV_ITEM_HEADING ? items[i] : items[i]->parent;
 833       dump_heading_transition (prev_heading, heading);
 834       if (items[i]->type == SPV_ITEM_TEXT)
 835         spv_text_submit (items[i]);
 836       else if (items[i]->type == SPV_ITEM_TABLE)
 837         pivot_table_submit (spv_item_get_table (items[i]));
 838       prev_heading = heading;
 839     }
 840   dump_heading_transition (prev_heading, spv_get_root (spv));
 841   free (items);
 842   spv_close (spv);
 843 }
 844
 845 /* Callback for the file_open action.
 846    Prompts for a filename and opens it */
 847 void
 848 psppire_window_open (PsppireWindow *de)
 849 {
 850   GtkWidget *dialog = psppire_window_file_chooser_dialog (de);
 851
 852   gtk_file_chooser_add_shortcut_folder (GTK_FILE_CHOOSER (dialog), relocate (examples_dir), NULL);
 853
 854   switch (gtk_dialog_run (GTK_DIALOG (dialog)))
 855     {
 856     case GTK_RESPONSE_ACCEPT:
 857       {
 858         gchar *name =
 859           gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
 860
 861         const gchar **cs = NULL;
 862         g_get_filename_charsets (&cs);
 863
 864         gchar *encoding = psppire_encoding_selector_get_encoding (
 865           gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 866
 867         struct file_handle *fh = fh_create_file (NULL, name, cs[0], fh_default_properties ());
 868
 869         int retval = any_reader_detect (fh, NULL);
 870         if (retval == 1)
 871           open_data_window (de, name, encoding, NULL);
 872         else if (retval == 0)
 873           {
 874             char *error = spv_detect (name);
 875             if (!error)
 876               read_spv_file (name);
 877             else
 878               {
 879                 free (error);
 880                 open_syntax_window (name, encoding);
 881               }
 882           }
 883
 884         g_free (encoding);
 885         fh_unref (fh);
 886         g_free (name);
 887       }
 888       break;
 889     default:
 890       break;
 891     }
 892
 893   gtk_widget_destroy (dialog);
 894 }
 895
 896
 897 /* Puts FILE_NAME (encoded in the glib file name encoding) into the recent list
 898    with associated MIME_TYPE.  If it's already in the list, it moves it to the
 899    top. */
 900 void
 901 add_most_recent (const char *file_name,
 902                  const char *mime_type, const char *encoding)
 903 {
 904   gchar *uri = g_filename_to_uri  (file_name, NULL, NULL);
 905   if (uri)
 906     {
 907       GtkRecentData recent_data;
 908       gchar *full_mime_type;
 909
 910       if (encoding && encoding[0])
 911         full_mime_type = g_strdup_printf ("%s; charset=%s",
 912                                           mime_type, encoding);
 913       else
 914         full_mime_type = g_strdup (mime_type);
 915
 916       recent_data.display_name = NULL;
 917       recent_data.description = NULL;
 918       recent_data.mime_type = full_mime_type;
 919       recent_data.app_name = CONST_CAST (gchar *, g_get_application_name ());
 920       recent_data.app_exec = g_strjoin (" ", g_get_prgname (), "%u", NULL);
 921       recent_data.groups = NULL;
 922       recent_data.is_private = FALSE;
 923
 924       gtk_recent_manager_add_full (gtk_recent_manager_get_default (),
 925                                    uri, &recent_data);
 926
 927       g_free (recent_data.app_exec);
 928       g_free (full_mime_type);
 929     }
 930
 931   g_free (uri);
 932 }
 933
 934
 935
 936 /*
 937    If FILE_NAME exists in the recent list, then  delete it.
 938  */
 939 static void
 940 delete_recent (const char *file_name)
 941 {
 942   gchar *uri = g_filename_to_uri  (file_name, NULL, NULL);
 943
 944   if (uri)
 945     gtk_recent_manager_remove_item (gtk_recent_manager_get_default (), uri, NULL);
 946
 947   g_free (uri);
 948 }
 949