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

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2008, 2009, 2010, 2011, 2012, 2014, 2016,
   3    2020  Free Software Foundation
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation, either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #include <config.h>
  19
  20 #include <gtk/gtk.h>
  21 #include <stdlib.h>
  22
  23 #include <gtksourceview/gtksource.h>
  24
  25 #include "language/lexer/lexer.h"
  26 #include "libpspp/encoding-guesser.h"
  27 #include "libpspp/i18n.h"
  28 #include "libpspp/message.h"
  29 #include "ui/gui/executor.h"
  30 #include "ui/gui/help-menu.h"
  31 #include "ui/gui/helper.h"
  32 #include "ui/gui/builder-wrapper.h"
  33 #include "ui/gui/psppire-data-window.h"
  34 #include "ui/gui/psppire-encoding-selector.h"
  35 #include "ui/gui/psppire-lex-reader.h"
  36 #include "ui/gui/psppire-syntax-window.h"
  37 #include "ui/gui/psppire.h"
  38 #include "ui/gui/windows-menu.h"
  39
  40 #include "gl/localcharset.h"
  41 #include "gl/xalloc.h"
  42 #include "gl/xvasprintf.h"
  43
  44 #include <gettext.h>
  45 #define _(msgid) gettext (msgid)
  46 #define N_(msgid) msgid
  47
  48 static void psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *, gpointer);
  49 static void psppire_syntax_window_base_init     (PsppireSyntaxWindowClass *class);
  50 static void psppire_syntax_window_class_init    (PsppireSyntaxWindowClass *class);
  51 static void psppire_syntax_window_init          (PsppireSyntaxWindow      *syntax_editor);
  52
  53
  54 static void psppire_syntax_window_iface_init (PsppireWindowIface *iface);
  55
  56
  57 /* Properties */
  58 enum
  59 {
  60   PROP_0,
  61   PROP_ENCODING
  62 };
  63
  64 static void
  65 psppire_syntax_window_set_property (GObject         *object,
  66                                     guint            prop_id,
  67                                     const GValue    *value,
  68                                     GParamSpec      *pspec)
  69 {
  70   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  71
  72   switch (prop_id)
  73     {
  74     case PROP_ENCODING:
  75       g_free (window->encoding);
  76       window->encoding = g_value_dup_string (value);
  77       break;
  78     default:
  79       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  80       break;
  81     };
  82 }
  83
  84
  85 static void
  86 psppire_syntax_window_get_property (GObject         *object,
  87                                     guint            prop_id,
  88                                     GValue          *value,
  89                                     GParamSpec      *pspec)
  90 {
  91   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  92
  93   switch (prop_id)
  94     {
  95     case PROP_ENCODING:
  96       g_value_set_string (value, window->encoding);
  97       break;
  98     default:
  99       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 100       break;
 101     };
 102 }
 103
 104 GType
 105 psppire_syntax_window_get_type (void)
 106 {
 107   static GType psppire_syntax_window_type = 0;
 108
 109   if (!psppire_syntax_window_type)
 110     {
 111       static const GTypeInfo psppire_syntax_window_info =
 112       {
 113         sizeof (PsppireSyntaxWindowClass),
 114         (GBaseInitFunc) psppire_syntax_window_base_init,
 115         (GBaseFinalizeFunc) psppire_syntax_window_base_finalize,
 116         (GClassInitFunc)psppire_syntax_window_class_init,
 117         (GClassFinalizeFunc) NULL,
 118         NULL,
 119         sizeof (PsppireSyntaxWindow),
 120         0,
 121         (GInstanceInitFunc) psppire_syntax_window_init,
 122       };
 123
 124       static const GInterfaceInfo window_interface_info =
 125         {
 126           (GInterfaceInitFunc) psppire_syntax_window_iface_init,
 127           NULL,
 128           NULL
 129         };
 130
 131       psppire_syntax_window_type =
 132         g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireSyntaxWindow",
 133                                 &psppire_syntax_window_info, 0);
 134
 135       g_type_add_interface_static (psppire_syntax_window_type,
 136                                    PSPPIRE_TYPE_WINDOW_MODEL,
 137                                    &window_interface_info);
 138     }
 139
 140   return psppire_syntax_window_type;
 141 }
 142
 143 static GObjectClass *parent_class ;
 144
 145 static void
 146 psppire_syntax_window_finalize (GObject *object)
 147 {
 148   if (G_OBJECT_CLASS (parent_class)->finalize)
 149     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
 150 }
 151
 152
 153 static void
 154 psppire_syntax_window_dispose (GObject *obj)
 155 {
 156   PsppireSyntaxWindow *sw = (PsppireSyntaxWindow *)obj;
 157
 158   GtkClipboard *clip_selection;
 159   GtkClipboard *clip_primary;
 160
 161   if (sw->dispose_has_run)
 162     return;
 163
 164   g_object_unref (sw->search_text_buffer);
 165
 166   g_free (sw->encoding);
 167   sw->encoding = NULL;
 168
 169   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 170   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
 171
 172   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
 173
 174   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
 175
 176   /* Make sure dispose does not run twice. */
 177   sw->dispose_has_run = TRUE;
 178
 179   /* Chain up to the parent class */
 180   G_OBJECT_CLASS (parent_class)->dispose (obj);
 181 }
 182
 183
 184
 185 static void
 186 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
 187 {
 188   GParamSpec *encoding_spec;
 189   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 190
 191   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
 192
 193   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
 194   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
 195   int n = g_strv_length ((gchar **) existing_paths);
 196
 197   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
 198   new_paths[n] = g_strdup (relocate (PKGDATADIR));
 199   new_paths[n+1] = NULL;
 200
 201   lm = gtk_source_language_manager_new ();
 202   gtk_source_language_manager_set_search_path (lm, new_paths);
 203
 204   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
 205
 206   if (class->lan == NULL)
 207     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
 208
 209   parent_class = g_type_class_peek_parent (class);
 210
 211   g_strfreev (new_paths);
 212
 213   encoding_spec =
 214     null_if_empty_param ("encoding",
 215                          "Character encoding",
 216                          "IANA character encoding in this syntax file",
 217                          NULL,
 218                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 219
 220   parent_class = g_type_class_peek_parent (class);
 221
 222   gobject_class->set_property = psppire_syntax_window_set_property;
 223   gobject_class->get_property = psppire_syntax_window_get_property;
 224   gobject_class->dispose = psppire_syntax_window_dispose;
 225
 226   g_object_class_install_property (gobject_class,
 227                                    PROP_ENCODING,
 228                                    encoding_spec);
 229 }
 230
 231
 232 static void
 233 psppire_syntax_window_base_init (PsppireSyntaxWindowClass *class)
 234 {
 235   GObjectClass *object_class = G_OBJECT_CLASS (class);
 236   object_class->finalize = psppire_syntax_window_finalize;
 237 }
 238
 239
 240
 241 static void
 242 psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *class,
 243                                      gpointer class_data)
 244 {
 245 }
 246
 247
 248 static void
 249 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 250                        GtkTextIter stop)
 251 {
 252   PsppireWindow *win = PSPPIRE_WINDOW (sw);
 253   struct lex_reader *reader = lex_reader_for_gtk_text_buffer (GTK_TEXT_BUFFER (sw->buffer), start, stop);
 254
 255   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
 256
 257   execute_syntax (psppire_default_data_window (), reader);
 258 }
 259 \f
 260 /* Delete the currently selected text */
 261 static void
 262 on_edit_delete (PsppireSyntaxWindow *sw)
 263 {
 264   GtkTextIter begin, end;
 265   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 266
 267   if (gtk_text_buffer_get_selection_bounds (buffer, &begin, &end))
 268     gtk_text_buffer_delete (buffer, &begin, &end);
 269 }
 270
 271 /* Create and run a dialog to collect the search string.
 272    In future this might be expanded to include options, for example
 273    backward searching, case sensitivity etc.  */
 274 static const char *
 275 get_search_text (PsppireSyntaxWindow *parent)
 276 {
 277   const char *search_text = NULL;
 278   GtkDialogFlags flags = GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL;
 279   GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Text Search"),
 280                                                    GTK_WINDOW (parent),
 281                                                    flags,
 282                                                    _("_OK"),
 283                                                    GTK_RESPONSE_OK,
 284                                                    _("_Cancel"),
 285                                                    GTK_RESPONSE_CANCEL,
 286                                                    NULL);
 287
 288   GtkWidget *content_area =
 289     gtk_dialog_get_content_area (GTK_DIALOG (dialog));
 290
 291   GtkWidget *box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 5);
 292   GtkWidget *label = gtk_label_new (_("Text to search for:"));
 293   GtkWidget *entry = gtk_entry_new_with_buffer (parent->search_text_buffer);
 294
 295   /* Add the label, and show everything we have added.  */
 296   gtk_container_add (GTK_CONTAINER (content_area), box);
 297   gtk_container_add (GTK_CONTAINER (box), label);
 298   gtk_container_add (GTK_CONTAINER (box), entry);
 299   gtk_widget_show_all (content_area);
 300
 301   int result = gtk_dialog_run (GTK_DIALOG (dialog));
 302   switch (result)
 303     {
 304     case GTK_RESPONSE_OK:
 305       search_text = gtk_entry_get_text (GTK_ENTRY (entry));
 306       break;
 307     default:
 308       search_text = NULL;
 309     };
 310
 311   gtk_widget_destroy (dialog);
 312   return search_text;
 313 }
 314
 315
 316 /* What to do when the Find menuitem is called.  */
 317 static void
 318 on_edit_find (PsppireSyntaxWindow *sw)
 319 {
 320   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 321   GtkTextIter begin;
 322   GtkTextIter loc;
 323   const char *target = get_search_text (sw);
 324
 325   if (target == NULL)
 326     return;
 327
 328   /* This is a wrap-around search.  So start searching one
 329      character after the current char.  */
 330   GtkTextMark *mark = gtk_text_buffer_get_insert (buffer);
 331   gtk_text_buffer_get_iter_at_mark (buffer, &begin, mark);
 332   gtk_text_iter_forward_char (&begin);
 333   if (gtk_text_iter_forward_search (&begin, target, 0,
 334                                     &loc, 0, 0))
 335     {
 336       gtk_text_buffer_place_cursor (buffer, &loc);
 337     }
 338   else
 339     {
 340       /* If not found, then continue the search from the top
 341          of the buffer.  */
 342       gtk_text_buffer_get_start_iter (buffer, &begin);
 343       if (gtk_text_iter_forward_search (&begin, target, 0,
 344                                         &loc, 0, 0))
 345         {
 346           gtk_text_buffer_place_cursor (buffer, &loc);
 347         }
 348     }
 349 }
 350
 351
 352 /* The syntax editor's clipboard deals only with text */
 353 enum {
 354   SELECT_FMT_NULL,
 355   SELECT_FMT_TEXT,
 356 };
 357
 358
 359 static void
 360 selection_changed (PsppireSyntaxWindow *sw)
 361 {
 362   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
 363
 364   g_object_set (sw->edit_copy,    "enabled", sel, NULL);
 365   g_object_set (sw->edit_cut,     "enabled", sel, NULL);
 366   g_object_set (sw->edit_delete,  "enabled", sel, NULL);
 367 }
 368
 369 /* The callback which runs when something request clipboard data */
 370 static void
 371 clipboard_get_cb (GtkClipboard     *clipboard,
 372                   GtkSelectionData *selection_data,
 373                   guint             info,
 374                   gpointer          data)
 375 {
 376   PsppireSyntaxWindow *sw = data;
 377   g_assert (info == SELECT_FMT_TEXT);
 378
 379   gtk_selection_data_set (selection_data, gtk_selection_data_get_target (selection_data),
 380                           8,
 381                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
 382
 383 }
 384
 385 static void
 386 clipboard_clear_cb (GtkClipboard *clipboard,
 387                     gpointer data)
 388 {
 389   PsppireSyntaxWindow *sw = data;
 390   g_free (sw->cliptext);
 391   sw->cliptext = NULL;
 392 }
 393
 394
 395 static const GtkTargetEntry targets[] = {
 396   { "UTF8_STRING",   0, SELECT_FMT_TEXT },
 397   { "STRING",        0, SELECT_FMT_TEXT },
 398   { "TEXT",          0, SELECT_FMT_TEXT },
 399   { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
 400   { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
 401   { "text/plain",    0, SELECT_FMT_TEXT },
 402 };
 403
 404
 405 /*
 406   Store a clip containing the currently selected text.
 407   Returns true iff something was set.
 408   As a side effect, begin and end will be set to indicate
 409   the limits of the selected text.
 410 */
 411 static gboolean
 412 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
 413 {
 414   GtkClipboard *clipboard ;
 415   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 416
 417   if (! gtk_text_buffer_get_selection_bounds (buffer, begin, end))
 418     return FALSE;
 419
 420   g_free (sw->cliptext);
 421   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
 422
 423   clipboard =
 424     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 425
 426   if (!gtk_clipboard_set_with_owner (clipboard, targets,
 427                                      G_N_ELEMENTS (targets),
 428                                      clipboard_get_cb, clipboard_clear_cb,
 429                                      G_OBJECT (sw)))
 430     clipboard_clear_cb (clipboard, sw);
 431
 432   return TRUE;
 433 }
 434
 435 static void
 436 on_edit_cut (PsppireSyntaxWindow *sw)
 437 {
 438   GtkTextIter begin, end;
 439
 440   if (set_clip (sw, &begin, &end))
 441     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
 442 }
 443
 444 static void
 445 on_edit_copy (PsppireSyntaxWindow *sw)
 446 {
 447   GtkTextIter begin, end;
 448
 449   set_clip (sw, &begin, &end);
 450 }
 451
 452 static void
 453 on_edit_paste (PsppireSyntaxWindow *sw)
 454 {
 455   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 456   GtkClipboard *clipboard =
 457     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 458
 459   gtk_text_buffer_paste_clipboard (GTK_TEXT_BUFFER (sw->buffer), clipboard, NULL, TRUE);
 460 }
 461
 462
 463 /* Check to see if CLIP holds a target which we know how to paste,
 464    and set the sensitivity of the Paste action accordingly.
 465  */
 466 static void
 467 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 468 {
 469   gint i;
 470   gboolean compatible_target = FALSE;
 471   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 472
 473   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 474     {
 475       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 476       if (gtk_clipboard_wait_is_target_available (clip, atom))
 477         {
 478           compatible_target = TRUE;
 479           break;
 480         }
 481     }
 482
 483   g_object_set (sw->edit_paste, "enabled", compatible_target, NULL);
 484 }
 485
 486
 487 \f
 488
 489 /* Parse and execute all the text in the buffer */
 490 static void
 491 on_run_all (PsppireSyntaxWindow *se)
 492 {
 493   GtkTextIter begin, end;
 494
 495   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 496   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 497
 498   editor_execute_syntax (se, begin, end);
 499 }
 500
 501 /* Parse and execute the currently selected text */
 502 static void
 503 on_run_selection (PsppireSyntaxWindow *se)
 504 {
 505   GtkTextIter begin, end;
 506
 507   if (gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end))
 508     editor_execute_syntax (se, begin, end);
 509 }
 510
 511
 512 /* Parse and execute the from the current line, to the end of the
 513    buffer */
 514 static void
 515 on_run_to_end (PsppireSyntaxWindow *se)
 516 {
 517   GtkTextIter begin, end;
 518   GtkTextIter here;
 519   gint line;
 520
 521   /* Get the current line */
 522   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 523                                     &here,
 524                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 525                                 );
 526
 527   line = gtk_text_iter_get_line (&here) ;
 528
 529   /* Now set begin and end to the start of this line, and end of buffer
 530      respectively */
 531   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 532   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 533
 534   editor_execute_syntax (se, begin, end);
 535 }
 536
 537
 538
 539 /* Parse and execute the current line */
 540 static void
 541 on_run_current_line (PsppireSyntaxWindow *se)
 542 {
 543   GtkTextIter begin, end;
 544   GtkTextIter here;
 545   gint line;
 546
 547   /* Get the current line */
 548   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 549                                     &here,
 550                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 551                                 );
 552
 553   line = gtk_text_iter_get_line (&here) ;
 554
 555   /* Now set begin and end to the start of this line, and start of
 556      following line respectively */
 557   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 558   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 559
 560   editor_execute_syntax (se, begin, end);
 561 }
 562
 563
 564
 565 /* Append ".sps" to FILENAME if necessary.
 566    The returned result must be freed when no longer required.
 567  */
 568 static gchar *
 569 append_suffix (const gchar *filename)
 570 {
 571   if (! g_str_has_suffix (filename, ".sps") &&
 572        ! g_str_has_suffix (filename, ".SPS"))
 573     {
 574       return g_strdup_printf ("%s.sps", filename);
 575     }
 576
 577   return xstrdup (filename);
 578 }
 579
 580 /*
 581   Save BUFFER to the file called FILENAME.
 582   FILENAME must be encoded in Glib filename encoding.
 583   If successful, clears the buffer's modified flag.
 584 */
 585 static gboolean
 586 save_editor_to_file (PsppireSyntaxWindow *se,
 587                      const gchar *filename,
 588                      GError **err)
 589 {
 590   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 591   struct substring text_locale;
 592   gboolean result ;
 593   GtkTextIter start, stop;
 594   gchar *text;
 595
 596   gchar *suffixedname;
 597   g_assert (filename);
 598
 599   suffixedname = append_suffix (filename);
 600
 601   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 602   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 603
 604   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 605
 606   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 607                                        NULL);
 608
 609   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 610                                  ss_length (text_locale), err);
 611
 612   ss_dealloc (&text_locale);
 613   g_free (suffixedname);
 614
 615   if (result)
 616     {
 617       char *fn = g_filename_display_name (filename);
 618       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 619       g_free (fn);
 620       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 621       gtk_text_buffer_set_modified (buffer, FALSE);
 622       g_free (msg);
 623     }
 624
 625   return result;
 626 }
 627
 628
 629 /* PsppireWindow 'pick_Filename' callback. */
 630 static void
 631 syntax_pick_filename (PsppireWindow *window)
 632 {
 633   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 634   const char *default_encoding;
 635   GtkFileFilter *filter;
 636   gint response;
 637
 638   GtkWidget *dialog =
 639     gtk_file_chooser_dialog_new (_("Save Syntax"),
 640                                  GTK_WINDOW (se),
 641                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 642                                  _("Cancel"), GTK_RESPONSE_CANCEL,
 643                                  _("Save"),   GTK_RESPONSE_ACCEPT,
 644                                  NULL);
 645
 646   g_object_set (dialog, "local-only", FALSE, NULL);
 647
 648   filter = gtk_file_filter_new ();
 649   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 650   gtk_file_filter_add_pattern (filter, "*.sps");
 651   gtk_file_filter_add_pattern (filter, "*.SPS");
 652   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 653
 654   filter = gtk_file_filter_new ();
 655   gtk_file_filter_set_name (filter, _("All Files"));
 656   gtk_file_filter_add_pattern (filter, "*");
 657   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 658
 659   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 660                                                   TRUE);
 661
 662   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 663   gtk_file_chooser_set_extra_widget (
 664     GTK_FILE_CHOOSER (dialog),
 665     psppire_encoding_selector_new (default_encoding, false));
 666
 667   response = gtk_dialog_run (GTK_DIALOG (dialog));
 668
 669   if (response == GTK_RESPONSE_ACCEPT)
 670     {
 671       gchar *encoding;
 672       char *filename;
 673
 674       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
 675       psppire_window_set_filename (window, filename);
 676       free (filename);
 677
 678       encoding = psppire_encoding_selector_get_encoding (
 679         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 680       if (encoding != NULL)
 681         {
 682           g_free (se->encoding);
 683           se->encoding = encoding;
 684         }
 685     }
 686
 687   gtk_widget_destroy (dialog);
 688 }
 689
 690
 691 /* PsppireWindow 'save' callback. */
 692 static void
 693 syntax_save (PsppireWindow *se)
 694 {
 695   const gchar *filename = psppire_window_get_filename (se);
 696   GError *err = NULL;
 697   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 698   if (err)
 699     {
 700       msg (ME, "%s", err->message);
 701       g_error_free (err);
 702     }
 703 }
 704
 705
 706 static void
 707 load_and_show_syntax_window (GtkWidget *se, const gchar *filename,
 708                              const gchar *encoding)
 709 {
 710   gboolean ok;
 711
 712   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 713   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename, encoding, NULL);
 714   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 715
 716   if (ok)
 717     gtk_widget_show (se);
 718   else
 719     gtk_widget_destroy (se);
 720 }
 721
 722 void
 723 create_syntax_window (void)
 724 {
 725   GtkWidget *w = psppire_syntax_window_new (NULL);
 726
 727   gtk_widget_show (w);
 728 }
 729
 730 GtkWindow *
 731 open_syntax_window (const char *file_name, const gchar *encoding)
 732 {
 733   GtkWidget *se = psppire_syntax_window_new (NULL);
 734
 735   if (file_name)
 736     load_and_show_syntax_window (se, file_name, encoding);
 737
 738   return GTK_WINDOW (se);
 739 }
 740
 741
 742
 743 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 744
 745 static void
 746 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 747 {
 748   if (gtk_text_buffer_get_modified (buffer))
 749     psppire_window_set_unsaved (window);
 750 }
 751
 752 static void undo_redo_update (PsppireSyntaxWindow *window);
 753 static void undo_last_edit (PsppireSyntaxWindow *window);
 754 static void redo_last_edit (PsppireSyntaxWindow *window);
 755
 756 static void
 757 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 758 {
 759   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 760   undo_redo_update (window);
 761 }
 762
 763 static void
 764 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 765 {
 766   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 767   GtkWidget *box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
 768
 769   GObject *menu = get_object_assert (xml, "syntax-window-menu", G_TYPE_MENU);
 770   GtkWidget *menubar = gtk_menu_bar_new_from_model (G_MENU_MODEL (menu));
 771
 772   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 773
 774   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 775
 776   PsppireSyntaxWindowClass *class
 777     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 778
 779   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 780   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 781
 782   window->print_settings = NULL;
 783
 784   window->undo_menuitem = g_simple_action_new ("undo", NULL);
 785   window->redo_menuitem = g_simple_action_new ("redo", NULL);
 786
 787   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->undo_menuitem));
 788   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->redo_menuitem));
 789
 790
 791   if (class->lan)
 792     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 793   else
 794     window->buffer = gtk_source_buffer_new (NULL);
 795
 796   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 797
 798   g_object_set (window->buffer,
 799                 "highlight-matching-brackets", TRUE,
 800                 NULL);
 801
 802   g_object_set (text_view,
 803                 "show-line-numbers", TRUE,
 804                 "show-line-marks", TRUE,
 805                 "auto-indent", TRUE,
 806                 "indent-width", 4,
 807                 "highlight-current-line", TRUE,
 808                 NULL);
 809
 810   window->encoding = NULL;
 811
 812   window->cliptext = NULL;
 813   window->dispose_has_run = FALSE;
 814
 815   window->search_text_buffer = gtk_entry_buffer_new (NULL, -1);
 816
 817   window->edit_delete = g_simple_action_new ("delete", NULL);
 818   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_delete));
 819
 820   window->edit_copy = g_simple_action_new ("copy", NULL);
 821   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_copy));
 822
 823   window->edit_cut = g_simple_action_new ("cut", NULL);
 824   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_cut));
 825
 826   window->edit_paste = g_simple_action_new ("paste", NULL);
 827   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_paste));
 828
 829   window->edit_find = g_simple_action_new ("find", NULL);
 830   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_find));
 831
 832   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
 833
 834   window->sb = get_widget_assert (xml, "statusbar2");
 835   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
 836
 837   g_signal_connect (window->buffer, "changed",
 838                     G_CALLBACK (on_text_changed), window);
 839
 840   g_signal_connect (window->buffer, "modified-changed",
 841                     G_CALLBACK (on_modified_changed), window);
 842
 843
 844   {
 845     GSimpleAction *print = g_simple_action_new ("print", NULL);
 846
 847     g_signal_connect_swapped (print, "activate",
 848                               G_CALLBACK (psppire_syntax_window_print), window);
 849
 850     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (print));
 851   }
 852
 853   g_signal_connect_swapped (window->undo_menuitem,
 854                             "activate",
 855                             G_CALLBACK (undo_last_edit),
 856                             window);
 857
 858   g_signal_connect_swapped (window->redo_menuitem,
 859                             "activate",
 860                             G_CALLBACK (redo_last_edit),
 861                             window);
 862
 863   undo_redo_update (window);
 864
 865
 866   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 867                                                    G_CALLBACK (selection_changed), window);
 868
 869   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 870                                           G_CALLBACK (set_paste_sensitivity), window);
 871
 872   connect_help (xml);
 873
 874   gtk_container_add (GTK_CONTAINER (window), box);
 875
 876   g_object_ref (sw);
 877
 878   g_object_ref (window->sb);
 879
 880   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 881   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 882   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 883
 884   gtk_widget_show_all (box);
 885
 886   GtkApplication *app = GTK_APPLICATION (g_application_get_default ());
 887
 888   {
 889     GSimpleAction *open = g_simple_action_new ("open", NULL);
 890
 891     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (open));
 892
 893     g_signal_connect_swapped (open,
 894                               "activate",
 895                               G_CALLBACK (psppire_window_open),
 896                               window);
 897   }
 898
 899   {
 900     GSimpleAction *save = g_simple_action_new ("save", NULL);
 901
 902     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (save));
 903
 904     g_signal_connect_swapped (save,
 905                               "activate",
 906                               G_CALLBACK (psppire_window_save),
 907                               window);
 908
 909     const gchar *accels[2] = { "<Ctrl>S", NULL};
 910     gtk_application_set_accels_for_action (app,
 911                                            "win.save",
 912                                            accels);
 913
 914   }
 915
 916   {
 917     GSimpleAction *save_as = g_simple_action_new ("save_as", NULL);
 918
 919     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (save_as));
 920
 921     g_signal_connect_swapped (save_as,
 922                               "activate",
 923                               G_CALLBACK (psppire_window_save_as),
 924                               window);
 925
 926
 927     const gchar *accels[2] = { "<Shift><Ctrl>S", NULL};
 928     gtk_application_set_accels_for_action (app,
 929                                            "win.save_as",
 930                                            accels);
 931
 932
 933   }
 934
 935
 936   g_signal_connect_swapped (window->edit_delete,
 937                     "activate",
 938                     G_CALLBACK (on_edit_delete),
 939                     window);
 940
 941   g_signal_connect_swapped (window->edit_copy,
 942                     "activate",
 943                     G_CALLBACK (on_edit_copy),
 944                     window);
 945
 946   g_signal_connect_swapped (window->edit_cut,
 947                     "activate",
 948                     G_CALLBACK (on_edit_cut),
 949                     window);
 950
 951   g_signal_connect_swapped (window->edit_paste,
 952                     "activate",
 953                     G_CALLBACK (on_edit_paste),
 954                     window);
 955
 956   g_signal_connect_swapped (window->edit_find,
 957                     "activate",
 958                     G_CALLBACK (on_edit_find),
 959                     window);
 960
 961   {
 962     GSimpleAction *run_all = g_simple_action_new ("run-all", NULL);
 963
 964     g_signal_connect_swapped (run_all, "activate",
 965                               G_CALLBACK (on_run_all), window);
 966
 967     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_all));
 968   }
 969
 970   {
 971     GSimpleAction *run_current_line = g_simple_action_new ("run-current-line", NULL);
 972
 973     g_signal_connect_swapped (run_current_line, "activate",
 974                               G_CALLBACK (on_run_current_line), window);
 975
 976     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_current_line));
 977
 978     GtkApplication *app = GTK_APPLICATION (g_application_get_default ());
 979     const gchar *accels[2] = { "<Ctrl>R", NULL};
 980     gtk_application_set_accels_for_action (app,
 981                                            "win.run-current-line",
 982                                            accels);
 983   }
 984
 985   {
 986     GSimpleAction *run_selection = g_simple_action_new ("run-selection", NULL);
 987
 988     g_signal_connect_swapped (run_selection, "activate",
 989                               G_CALLBACK (on_run_selection), window);
 990
 991     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_selection));
 992   }
 993
 994   {
 995     GSimpleAction *run_to_end = g_simple_action_new ("run-to-end", NULL);
 996
 997     g_signal_connect_swapped (run_to_end, "activate",
 998                               G_CALLBACK (on_run_to_end), window);
 999
1000     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_to_end));
1001   }
1002
1003   gtk_menu_shell_append (GTK_MENU_SHELL (menubar),
1004                          create_windows_menu (GTK_WINDOW (window)));
1005
1006   gtk_menu_shell_append (GTK_MENU_SHELL (menubar),
1007                          create_help_menu (GTK_WINDOW (window)));
1008
1009   g_object_unref (xml);
1010 }
1011
1012
1013
1014
1015
1016 GtkWidget *
1017 psppire_syntax_window_new (const char *encoding)
1018 {
1019   GObject *sw = g_object_new (psppire_syntax_window_get_type (),
1020                               "description", _("Syntax Editor"),
1021                               "encoding", encoding,
1022                               NULL);
1023
1024   GApplication *app = g_application_get_default ();
1025   gtk_application_add_window (GTK_APPLICATION (app), GTK_WINDOW (sw));
1026
1027   return GTK_WIDGET (sw);
1028 }
1029
1030 static void
1031 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
1032 {
1033   gchar *fn = g_filename_display_basename (filename);
1034
1035   GtkWidget *dialog =
1036     gtk_message_dialog_new (w,
1037                             GTK_DIALOG_DESTROY_WITH_PARENT,
1038                             GTK_MESSAGE_ERROR,
1039                             GTK_BUTTONS_CLOSE,
1040                             _("Cannot load syntax file `%s'"),
1041                             fn);
1042
1043   g_free (fn);
1044
1045   g_object_set (dialog, "icon-name", "pspp", NULL);
1046
1047   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
1048                                             "%s", err->message);
1049
1050   gtk_dialog_run (GTK_DIALOG (dialog));
1051
1052   gtk_widget_destroy (dialog);
1053 }
1054
1055 /*
1056   Loads the buffer from the file called FILENAME
1057 */
1058 gboolean
1059 syntax_load (PsppireWindow *window, const gchar *filename,
1060              const gchar *encoding, gpointer not_used)
1061 {
1062   GError *err = NULL;
1063   gchar *text_locale = NULL;
1064   gchar *text_utf8 = NULL;
1065   gsize len_locale = -1;
1066   gsize len_utf8 = -1;
1067   GtkTextIter iter;
1068   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
1069   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
1070
1071   /* FIXME: What if it's a very big file ? */
1072   if (! g_file_get_contents (filename, &text_locale, &len_locale, &err))
1073     {
1074       error_dialog (GTK_WINDOW (window), filename, err);
1075       g_clear_error (&err);
1076       return FALSE;
1077     }
1078
1079   if (!encoding || !encoding[0])
1080     {
1081       /* Determine the file's encoding and update sw->encoding.  (The ordering
1082          is important here because encoding_guess_whole_file() often returns
1083          its argument instead of a copy of it.) */
1084       char *guessed_encoding;
1085
1086       guessed_encoding = g_strdup (encoding_guess_whole_file (sw->encoding,
1087                                                               text_locale,
1088                                                               len_locale));
1089       g_free (sw->encoding);
1090       sw->encoding = guessed_encoding;
1091     }
1092   else
1093     {
1094       g_free (sw->encoding);
1095       sw->encoding = g_strdup (encoding);
1096     }
1097
1098   text_utf8 = recode_substring_pool ("UTF-8", sw->encoding,
1099                                      ss_buffer (text_locale, len_locale),
1100                                      NULL).string;
1101   free (text_locale);
1102
1103   if (text_utf8 == NULL)
1104     {
1105       error_dialog (GTK_WINDOW (window), filename, err);
1106       g_clear_error (&err);
1107       return FALSE;
1108     }
1109
1110   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
1111
1112   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
1113
1114   gtk_text_buffer_set_modified (buffer, FALSE);
1115
1116   free (text_utf8);
1117
1118   add_most_recent (filename, "text/x-spss-syntax", sw->encoding);
1119
1120   return TRUE;
1121 }
1122
1123 \f
1124
1125 static void
1126 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1127 {
1128   iface->save = syntax_save;
1129   iface->pick_filename = syntax_pick_filename;
1130   iface->load = syntax_load;
1131 }
1132
1133
1134 \f
1135
1136 static void
1137 undo_redo_update (PsppireSyntaxWindow *window)
1138 {
1139   g_object_set (window->undo_menuitem, "enabled",
1140                 gtk_source_buffer_can_undo (window->buffer), NULL);
1141
1142   g_object_set  (window->redo_menuitem, "enabled",
1143                  gtk_source_buffer_can_redo (window->buffer), NULL);
1144 }
1145
1146 static void
1147 undo_last_edit (PsppireSyntaxWindow *window)
1148 {
1149   gtk_source_buffer_undo (window->buffer);
1150   undo_redo_update (window);
1151 }
1152
1153 static void
1154 redo_last_edit (PsppireSyntaxWindow *window)
1155 {
1156   gtk_source_buffer_redo (window->buffer);
1157   undo_redo_update (window);
1158 }
1159
1160
1161 \f
1162 /* Printing related stuff */
1163
1164
1165 static void
1166 begin_print (GtkPrintOperation *operation,
1167           GtkPrintContext   *context,
1168           PsppireSyntaxWindow *window)
1169 {
1170   window->compositor =
1171     gtk_source_print_compositor_new (window->buffer);
1172 }
1173
1174
1175 static void
1176 end_print (GtkPrintOperation *operation,
1177           GtkPrintContext   *context,
1178           PsppireSyntaxWindow *window)
1179 {
1180   g_object_unref (window->compositor);
1181   window->compositor = NULL;
1182 }
1183
1184
1185
1186 static gboolean
1187 paginate (GtkPrintOperation *operation,
1188           GtkPrintContext   *context,
1189           PsppireSyntaxWindow *window)
1190 {
1191   if (gtk_source_print_compositor_paginate (window->compositor, context))
1192     {
1193       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1194       gtk_print_operation_set_n_pages (operation, n_pages);
1195
1196       return TRUE;
1197     }
1198
1199   return FALSE;
1200 }
1201
1202 static void
1203 draw_page (GtkPrintOperation *operation,
1204            GtkPrintContext   *context,
1205            gint               page_nr,
1206           PsppireSyntaxWindow *window)
1207 {
1208   gtk_source_print_compositor_draw_page (window->compositor,
1209                                          context,
1210                                          page_nr);
1211 }
1212
1213
1214
1215 static void
1216 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1217 {
1218   GtkPrintOperationResult res;
1219
1220   GtkPrintOperation *print = gtk_print_operation_new ();
1221
1222   if (window->print_settings != NULL)
1223     gtk_print_operation_set_print_settings (print, window->print_settings);
1224
1225
1226   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1227   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1228   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1229   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1230
1231   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1232                                  GTK_WINDOW (window), NULL);
1233
1234   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1235     {
1236       if (window->print_settings != NULL)
1237         g_object_unref (window->print_settings);
1238       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1239     }
1240
1241   g_object_unref (print);
1242 }