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