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_class_init    (PsppireSyntaxWindowClass *class);
  49 static void psppire_syntax_window_init          (PsppireSyntaxWindow      *syntax_editor);
  50
  51
  52 static void psppire_syntax_window_iface_init (PsppireWindowIface *iface);
  53
  54
  55 /* Properties */
  56 enum
  57 {
  58   PROP_0,
  59   PROP_ENCODING
  60 };
  61
  62 static void
  63 psppire_syntax_window_set_property (GObject         *object,
  64                                     guint            prop_id,
  65                                     const GValue    *value,
  66                                     GParamSpec      *pspec)
  67 {
  68   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  69
  70   switch (prop_id)
  71     {
  72     case PROP_ENCODING:
  73       g_free (window->encoding);
  74       window->encoding = g_value_dup_string (value);
  75       break;
  76     default:
  77       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  78       break;
  79     };
  80 }
  81
  82
  83 static void
  84 psppire_syntax_window_get_property (GObject         *object,
  85                                     guint            prop_id,
  86                                     GValue          *value,
  87                                     GParamSpec      *pspec)
  88 {
  89   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  90
  91   switch (prop_id)
  92     {
  93     case PROP_ENCODING:
  94       g_value_set_string (value, window->encoding);
  95       break;
  96     default:
  97       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  98       break;
  99     };
 100 }
 101
 102 G_DEFINE_TYPE_WITH_CODE (PsppireSyntaxWindow, psppire_syntax_window, PSPPIRE_TYPE_WINDOW,
 103                          G_IMPLEMENT_INTERFACE (PSPPIRE_TYPE_WINDOW_MODEL, psppire_syntax_window_iface_init))
 104
 105 static GObjectClass *parent_class ;
 106
 107 static void
 108 psppire_syntax_window_finalize (GObject *object)
 109 {
 110   if (G_OBJECT_CLASS (parent_class)->finalize)
 111     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
 112 }
 113
 114
 115 static void
 116 psppire_syntax_window_dispose (GObject *obj)
 117 {
 118   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (obj);
 119
 120   GtkClipboard *clip_selection;
 121   GtkClipboard *clip_primary;
 122
 123   if (sw->dispose_has_run)
 124     return;
 125
 126   g_object_unref (sw->search_text_buffer);
 127
 128   g_free (sw->encoding);
 129   sw->encoding = NULL;
 130
 131   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 132   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
 133
 134   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
 135
 136   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
 137
 138   /* Make sure dispose does not run twice. */
 139   sw->dispose_has_run = TRUE;
 140
 141   /* Chain up to the parent class */
 142   G_OBJECT_CLASS (parent_class)->dispose (obj);
 143 }
 144
 145
 146
 147 static void
 148 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
 149 {
 150   GParamSpec *encoding_spec;
 151   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 152   gobject_class->finalize = psppire_syntax_window_finalize;
 153
 154   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
 155
 156   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
 157   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
 158   int n = g_strv_length ((gchar **) existing_paths);
 159
 160   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
 161   new_paths[n] = g_strdup (relocate (PKGDATADIR));
 162   new_paths[n+1] = NULL;
 163
 164   lm = gtk_source_language_manager_new ();
 165   gtk_source_language_manager_set_search_path (lm, new_paths);
 166
 167   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
 168
 169   if (class->lan == NULL)
 170     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
 171
 172   parent_class = g_type_class_peek_parent (class);
 173
 174   g_strfreev (new_paths);
 175
 176   encoding_spec =
 177     null_if_empty_param ("encoding",
 178                          "Character encoding",
 179                          "IANA character encoding in this syntax file",
 180                          NULL,
 181                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 182
 183   parent_class = g_type_class_peek_parent (class);
 184
 185   gobject_class->set_property = psppire_syntax_window_set_property;
 186   gobject_class->get_property = psppire_syntax_window_get_property;
 187   gobject_class->dispose = psppire_syntax_window_dispose;
 188
 189   g_object_class_install_property (gobject_class,
 190                                    PROP_ENCODING,
 191                                    encoding_spec);
 192 }
 193
 194
 195 static void
 196 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 197                        GtkTextIter stop)
 198 {
 199   PsppireWindow *win = PSPPIRE_WINDOW (sw);
 200   struct lex_reader *reader = lex_reader_for_gtk_text_buffer (
 201     GTK_TEXT_BUFFER (sw->buffer), start, stop, sw->syntax_mode);
 202
 203   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
 204
 205   execute_syntax (psppire_default_data_window (), reader);
 206 }
 207 \f
 208 /* Delete the currently selected text */
 209 static void
 210 on_edit_delete (PsppireSyntaxWindow *sw)
 211 {
 212   GtkTextIter begin, end;
 213   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 214
 215   if (gtk_text_buffer_get_selection_bounds (buffer, &begin, &end))
 216     gtk_text_buffer_delete (buffer, &begin, &end);
 217 }
 218
 219 /* Create and run a dialog to collect the search string.
 220    In future this might be expanded to include options, for example
 221    backward searching, case sensitivity etc.  */
 222 static const char *
 223 get_search_text (PsppireSyntaxWindow *parent)
 224 {
 225   const char *search_text = NULL;
 226   GtkDialogFlags flags = GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL;
 227   GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Text Search"),
 228                                                    GTK_WINDOW (parent),
 229                                                    flags,
 230                                                    _("_OK"),
 231                                                    GTK_RESPONSE_OK,
 232                                                    _("_Cancel"),
 233                                                    GTK_RESPONSE_CANCEL,
 234                                                    NULL);
 235
 236   GtkWidget *content_area =
 237     gtk_dialog_get_content_area (GTK_DIALOG (dialog));
 238
 239   GtkWidget *box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 5);
 240   GtkWidget *label = gtk_label_new (_("Text to search for:"));
 241   GtkWidget *entry = gtk_entry_new_with_buffer (parent->search_text_buffer);
 242
 243   /* Add the label, and show everything we have added.  */
 244   gtk_container_add (GTK_CONTAINER (content_area), box);
 245   gtk_container_add (GTK_CONTAINER (box), label);
 246   gtk_container_add (GTK_CONTAINER (box), entry);
 247   gtk_widget_show_all (content_area);
 248
 249   int result = gtk_dialog_run (GTK_DIALOG (dialog));
 250   switch (result)
 251     {
 252     case GTK_RESPONSE_OK:
 253       search_text = gtk_entry_get_text (GTK_ENTRY (entry));
 254       break;
 255     default:
 256       search_text = NULL;
 257     };
 258
 259   gtk_widget_destroy (dialog);
 260   return search_text;
 261 }
 262
 263
 264 /* What to do when the Find menuitem is called.  */
 265 static void
 266 on_edit_find (PsppireSyntaxWindow *sw)
 267 {
 268   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 269   GtkTextIter begin;
 270   GtkTextIter loc;
 271   const char *target = get_search_text (sw);
 272
 273   if (target == NULL)
 274     return;
 275
 276   /* This is a wrap-around search.  So start searching one
 277      character after the current char.  */
 278   GtkTextMark *mark = gtk_text_buffer_get_insert (buffer);
 279   gtk_text_buffer_get_iter_at_mark (buffer, &begin, mark);
 280   gtk_text_iter_forward_char (&begin);
 281   if (gtk_text_iter_forward_search (&begin, target, 0,
 282                                     &loc, 0, 0))
 283     {
 284       gtk_text_buffer_place_cursor (buffer, &loc);
 285     }
 286   else
 287     {
 288       /* If not found, then continue the search from the top
 289          of the buffer.  */
 290       gtk_text_buffer_get_start_iter (buffer, &begin);
 291       if (gtk_text_iter_forward_search (&begin, target, 0,
 292                                         &loc, 0, 0))
 293         {
 294           gtk_text_buffer_place_cursor (buffer, &loc);
 295         }
 296     }
 297 }
 298
 299
 300 /* The syntax editor's clipboard deals only with text */
 301 enum {
 302   SELECT_FMT_NULL,
 303   SELECT_FMT_TEXT,
 304 };
 305
 306
 307 static void
 308 selection_changed (PsppireSyntaxWindow *sw)
 309 {
 310   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
 311
 312   g_object_set (sw->edit_copy,    "enabled", sel, NULL);
 313   g_object_set (sw->edit_cut,     "enabled", sel, NULL);
 314   g_object_set (sw->edit_delete,  "enabled", sel, NULL);
 315 }
 316
 317 /* The callback which runs when something request clipboard data */
 318 static void
 319 clipboard_get_cb (GtkClipboard     *clipboard,
 320                   GtkSelectionData *selection_data,
 321                   guint             info,
 322                   gpointer          data)
 323 {
 324   PsppireSyntaxWindow *sw = data;
 325   g_assert (info == SELECT_FMT_TEXT);
 326
 327   gtk_selection_data_set (selection_data, gtk_selection_data_get_target (selection_data),
 328                           8,
 329                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
 330
 331 }
 332
 333 static void
 334 clipboard_clear_cb (GtkClipboard *clipboard,
 335                     gpointer data)
 336 {
 337   PsppireSyntaxWindow *sw = data;
 338   g_free (sw->cliptext);
 339   sw->cliptext = NULL;
 340 }
 341
 342 static gchar tn1[] = "UTF8_STRING";
 343 static gchar tn2[] = "STRING";
 344 static gchar tn3[] = "TEXT";
 345 static gchar tn4[] = "COMPOUND_TEXT";
 346 static gchar tn5[] = "text/plain;charset=utf-8";
 347 static gchar tn6[] = "text/plain";
 348
 349 static const GtkTargetEntry targets[] = {
 350   { tn1, 0, SELECT_FMT_TEXT },
 351   { tn2, 0, SELECT_FMT_TEXT },
 352   { tn3, 0, SELECT_FMT_TEXT },
 353   { tn4, 0, SELECT_FMT_TEXT },
 354   { tn5, 0, SELECT_FMT_TEXT },
 355   { tn6, 0, SELECT_FMT_TEXT }
 356 };
 357
 358 /*
 359   Store a clip containing the currently selected text.
 360   Returns true iff something was set.
 361   As a side effect, begin and end will be set to indicate
 362   the limits of the selected text.
 363 */
 364 static gboolean
 365 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
 366 {
 367   GtkClipboard *clipboard ;
 368   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 369
 370   if (! gtk_text_buffer_get_selection_bounds (buffer, begin, end))
 371     return FALSE;
 372
 373   g_free (sw->cliptext);
 374   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
 375
 376   clipboard =
 377     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 378
 379   if (!gtk_clipboard_set_with_owner (clipboard, targets,
 380                                      G_N_ELEMENTS (targets),
 381                                      clipboard_get_cb, clipboard_clear_cb,
 382                                      G_OBJECT (sw)))
 383     clipboard_clear_cb (clipboard, sw);
 384
 385   return TRUE;
 386 }
 387
 388 static void
 389 on_edit_cut (PsppireSyntaxWindow *sw)
 390 {
 391   GtkTextIter begin, end;
 392
 393   if (set_clip (sw, &begin, &end))
 394     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
 395 }
 396
 397 static void
 398 on_edit_copy (PsppireSyntaxWindow *sw)
 399 {
 400   GtkTextIter begin, end;
 401
 402   set_clip (sw, &begin, &end);
 403 }
 404
 405 static void
 406 on_edit_paste (PsppireSyntaxWindow *sw)
 407 {
 408   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 409   GtkClipboard *clipboard =
 410     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 411
 412   gtk_text_buffer_paste_clipboard (GTK_TEXT_BUFFER (sw->buffer), clipboard, NULL, TRUE);
 413 }
 414
 415
 416 /* Check to see if CLIP holds a target which we know how to paste,
 417    and set the sensitivity of the Paste action accordingly.
 418  */
 419 static void
 420 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 421 {
 422   gint i;
 423   gboolean compatible_target = FALSE;
 424   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 425
 426   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 427     {
 428       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 429       if (gtk_clipboard_wait_is_target_available (clip, atom))
 430         {
 431           compatible_target = TRUE;
 432           break;
 433         }
 434     }
 435
 436   g_object_set (sw->edit_paste, "enabled", compatible_target, NULL);
 437 }
 438
 439
 440 \f
 441
 442 /* Parse and execute all the text in the buffer */
 443 static void
 444 on_run_all (PsppireSyntaxWindow *se)
 445 {
 446   GtkTextIter begin, end;
 447
 448   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 449   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 450
 451   editor_execute_syntax (se, begin, end);
 452 }
 453
 454 /* Parse and execute the currently selected text */
 455 static void
 456 on_run_selection (PsppireSyntaxWindow *se)
 457 {
 458   GtkTextIter begin, end;
 459
 460   if (gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end))
 461     editor_execute_syntax (se, begin, end);
 462 }
 463
 464
 465 /* Parse and execute the from the current line, to the end of the
 466    buffer */
 467 static void
 468 on_run_to_end (PsppireSyntaxWindow *se)
 469 {
 470   GtkTextIter begin, end;
 471   GtkTextIter here;
 472   gint line;
 473
 474   /* Get the current line */
 475   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 476                                     &here,
 477                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 478                                 );
 479
 480   line = gtk_text_iter_get_line (&here) ;
 481
 482   /* Now set begin and end to the start of this line, and end of buffer
 483      respectively */
 484   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 485   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 486
 487   editor_execute_syntax (se, begin, end);
 488 }
 489
 490
 491
 492 /* Parse and execute the current line */
 493 static void
 494 on_run_current_line (PsppireSyntaxWindow *se)
 495 {
 496   GtkTextIter begin, end;
 497   GtkTextIter here;
 498   gint line;
 499
 500   /* Get the current line */
 501   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 502                                     &here,
 503                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 504                                 );
 505
 506   line = gtk_text_iter_get_line (&here) ;
 507
 508   /* Now set begin and end to the start of this line, and start of
 509      following line respectively */
 510   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 511   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 512
 513   editor_execute_syntax (se, begin, end);
 514 }
 515
 516
 517
 518 static void
 519 on_syntax (GAction *action, GVariant *param, PsppireSyntaxWindow *sw)
 520 {
 521   g_action_change_state (action, param);
 522   GVariant *new_state = g_action_get_state (action);
 523
 524   const gchar *what = g_variant_get_string (new_state, NULL);
 525   if (0 == g_strcmp0 (what, "auto"))
 526     sw->syntax_mode = LEX_SYNTAX_AUTO;
 527   else if (0 == g_strcmp0 (what, "interactive"))
 528     sw->syntax_mode = LEX_SYNTAX_INTERACTIVE;
 529   else if (0 == g_strcmp0 (what, "batch"))
 530     sw->syntax_mode = LEX_SYNTAX_BATCH;
 531   else
 532     g_warn_if_reached ();
 533 }
 534
 535
 536 /* Append ".sps" to FILENAME if necessary.
 537    The returned result must be freed when no longer required.
 538  */
 539 static gchar *
 540 append_suffix (const gchar *filename)
 541 {
 542   if (! g_str_has_suffix (filename, ".sps") &&
 543        ! g_str_has_suffix (filename, ".SPS"))
 544     {
 545       return g_strdup_printf ("%s.sps", filename);
 546     }
 547
 548   return xstrdup (filename);
 549 }
 550
 551 /*
 552   Save BUFFER to the file called FILENAME.
 553   FILENAME must be encoded in Glib filename encoding.
 554   If successful, clears the buffer's modified flag.
 555 */
 556 static gboolean
 557 save_editor_to_file (PsppireSyntaxWindow *se,
 558                      const gchar *filename,
 559                      GError **err)
 560 {
 561   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 562   struct substring text_locale;
 563   gboolean result ;
 564   GtkTextIter start, stop;
 565   gchar *text;
 566
 567   gchar *suffixedname;
 568   g_assert (filename);
 569
 570   suffixedname = append_suffix (filename);
 571
 572   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 573   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 574
 575   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 576
 577   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 578                                        NULL);
 579
 580   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 581                                  ss_length (text_locale), err);
 582
 583   ss_dealloc (&text_locale);
 584   g_free (suffixedname);
 585
 586   if (result)
 587     {
 588       char *fn = g_filename_display_name (filename);
 589       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 590       g_free (fn);
 591       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 592       gtk_text_buffer_set_modified (buffer, FALSE);
 593       g_free (msg);
 594     }
 595
 596   return result;
 597 }
 598
 599
 600 /* PsppireWindow 'pick_Filename' callback. */
 601 static void
 602 syntax_pick_filename (PsppireWindow *window)
 603 {
 604   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 605   const char *default_encoding;
 606   GtkFileFilter *filter;
 607   gint response;
 608
 609   GtkWidget *dialog =
 610     gtk_file_chooser_dialog_new (_("Save Syntax"),
 611                                  GTK_WINDOW (se),
 612                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 613                                  _("Cancel"), GTK_RESPONSE_CANCEL,
 614                                  _("Save"),   GTK_RESPONSE_ACCEPT,
 615                                  NULL);
 616
 617   g_object_set (dialog, "local-only", FALSE, NULL);
 618
 619   filter = gtk_file_filter_new ();
 620   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 621   gtk_file_filter_add_pattern (filter, "*.sps");
 622   gtk_file_filter_add_pattern (filter, "*.SPS");
 623   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 624
 625   filter = gtk_file_filter_new ();
 626   gtk_file_filter_set_name (filter, _("All Files"));
 627   gtk_file_filter_add_pattern (filter, "*");
 628   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 629
 630   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 631                                                   TRUE);
 632
 633   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 634   gtk_file_chooser_set_extra_widget (
 635     GTK_FILE_CHOOSER (dialog),
 636     psppire_encoding_selector_new (default_encoding, false));
 637
 638   response = gtk_dialog_run (GTK_DIALOG (dialog));
 639
 640   if (response == GTK_RESPONSE_ACCEPT)
 641     {
 642       gchar *encoding;
 643       char *filename;
 644
 645       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
 646       psppire_window_set_filename (window, filename);
 647       free (filename);
 648
 649       encoding = psppire_encoding_selector_get_encoding (
 650         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 651       if (encoding != NULL)
 652         {
 653           g_free (se->encoding);
 654           se->encoding = encoding;
 655         }
 656     }
 657
 658   gtk_widget_destroy (dialog);
 659 }
 660
 661
 662 /* PsppireWindow 'save' callback. */
 663 static void
 664 syntax_save (PsppireWindow *se)
 665 {
 666   const gchar *filename = psppire_window_get_filename (se);
 667   GError *err = NULL;
 668   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 669   if (err)
 670     {
 671       msg (ME, "%s", err->message);
 672       g_error_free (err);
 673     }
 674 }
 675
 676
 677 static void
 678 load_and_show_syntax_window (GtkWidget *se, const gchar *filename,
 679                              const gchar *encoding)
 680 {
 681   gboolean ok;
 682
 683   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 684   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename, encoding, NULL);
 685   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 686
 687   if (ok)
 688     gtk_widget_show (se);
 689   else
 690     gtk_widget_destroy (se);
 691 }
 692
 693 void
 694 create_syntax_window (void)
 695 {
 696   GtkWidget *w = psppire_syntax_window_new (NULL);
 697
 698   gtk_widget_show (w);
 699 }
 700
 701 GtkWindow *
 702 open_syntax_window (const char *file_name, const gchar *encoding)
 703 {
 704   GtkWidget *se = psppire_syntax_window_new (NULL);
 705
 706   if (file_name)
 707     load_and_show_syntax_window (se, file_name, encoding);
 708
 709   return GTK_WINDOW (se);
 710 }
 711
 712
 713
 714 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 715
 716 static void
 717 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 718 {
 719   if (gtk_text_buffer_get_modified (buffer))
 720     psppire_window_set_unsaved (window);
 721 }
 722
 723 static void undo_redo_update (PsppireSyntaxWindow *window);
 724 static void undo_last_edit (PsppireSyntaxWindow *window);
 725 static void redo_last_edit (PsppireSyntaxWindow *window);
 726
 727 static void
 728 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 729 {
 730   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 731   undo_redo_update (window);
 732 }
 733
 734 static void
 735 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 736 {
 737   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 738   GtkWidget *box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
 739
 740   GObject *menu = get_object_assert (xml, "syntax-window-menu", G_TYPE_MENU);
 741   GtkWidget *menubar = gtk_menu_bar_new_from_model (G_MENU_MODEL (menu));
 742
 743   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 744
 745   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 746
 747   PsppireSyntaxWindowClass *class
 748     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 749
 750   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 751   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 752
 753   window->print_settings = NULL;
 754
 755   window->undo_menuitem = g_simple_action_new ("undo", NULL);
 756   window->redo_menuitem = g_simple_action_new ("redo", NULL);
 757
 758   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->undo_menuitem));
 759   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->redo_menuitem));
 760
 761
 762   if (class->lan)
 763     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 764   else
 765     window->buffer = gtk_source_buffer_new (NULL);
 766
 767   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 768
 769   g_object_set (window->buffer,
 770                 "highlight-matching-brackets", TRUE,
 771                 NULL);
 772
 773   g_object_set (text_view,
 774                 "show-line-numbers", TRUE,
 775                 "show-line-marks", TRUE,
 776                 "auto-indent", TRUE,
 777                 "indent-width", 4,
 778                 "highlight-current-line", TRUE,
 779                 NULL);
 780
 781   window->encoding = NULL;
 782   window->syntax_mode = LEX_SYNTAX_AUTO;
 783
 784   window->cliptext = NULL;
 785   window->dispose_has_run = FALSE;
 786
 787   window->search_text_buffer = gtk_entry_buffer_new (NULL, -1);
 788
 789   window->edit_delete = g_simple_action_new ("delete", NULL);
 790   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_delete));
 791
 792   window->edit_copy = g_simple_action_new ("copy", NULL);
 793   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_copy));
 794
 795   window->edit_cut = g_simple_action_new ("cut", NULL);
 796   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_cut));
 797
 798   window->edit_paste = g_simple_action_new ("paste", NULL);
 799   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_paste));
 800
 801   window->edit_find = g_simple_action_new ("find", NULL);
 802   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_find));
 803
 804   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
 805
 806   window->sb = get_widget_assert (xml, "statusbar2");
 807   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
 808
 809   g_signal_connect (window->buffer, "changed",
 810                     G_CALLBACK (on_text_changed), window);
 811
 812   g_signal_connect (window->buffer, "modified-changed",
 813                     G_CALLBACK (on_modified_changed), window);
 814
 815
 816   {
 817     GSimpleAction *print = g_simple_action_new ("print", NULL);
 818
 819     g_signal_connect_swapped (print, "activate",
 820                               G_CALLBACK (psppire_syntax_window_print), window);
 821
 822     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (print));
 823   }
 824
 825   g_signal_connect_swapped (window->undo_menuitem,
 826                             "activate",
 827                             G_CALLBACK (undo_last_edit),
 828                             window);
 829
 830   g_signal_connect_swapped (window->redo_menuitem,
 831                             "activate",
 832                             G_CALLBACK (redo_last_edit),
 833                             window);
 834
 835   undo_redo_update (window);
 836
 837
 838   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 839                                                    G_CALLBACK (selection_changed), window);
 840
 841   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 842                                           G_CALLBACK (set_paste_sensitivity), window);
 843
 844   gtk_container_add (GTK_CONTAINER (window), box);
 845
 846   g_object_ref (sw);
 847
 848   g_object_ref (window->sb);
 849
 850   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 851   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 852   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 853
 854   gtk_widget_show_all (box);
 855
 856   GtkApplication *app = GTK_APPLICATION (g_application_get_default ());
 857
 858   {
 859     GSimpleAction *open = g_simple_action_new ("open", NULL);
 860
 861     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (open));
 862
 863     g_signal_connect_swapped (open,
 864                               "activate",
 865                               G_CALLBACK (psppire_window_open),
 866                               window);
 867   }
 868
 869   {
 870     GSimpleAction *save = g_simple_action_new ("save", NULL);
 871
 872     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (save));
 873
 874     g_signal_connect_swapped (save,
 875                               "activate",
 876                               G_CALLBACK (psppire_window_save),
 877                               window);
 878
 879     const gchar *accels[2] = { "<Primary>S", NULL};
 880     gtk_application_set_accels_for_action (app,
 881                                            "win.save",
 882                                            accels);
 883
 884   }
 885
 886   {
 887     GSimpleAction *save_as = g_simple_action_new ("save_as", NULL);
 888
 889     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (save_as));
 890
 891     g_signal_connect_swapped (save_as,
 892                               "activate",
 893                               G_CALLBACK (psppire_window_save_as),
 894                               window);
 895
 896
 897     const gchar *accels[2] = { "<Shift><Primary>S", NULL};
 898     gtk_application_set_accels_for_action (app,
 899                                            "win.save_as",
 900                                            accels);
 901
 902
 903   }
 904
 905
 906   g_signal_connect_swapped (window->edit_delete,
 907                     "activate",
 908                     G_CALLBACK (on_edit_delete),
 909                     window);
 910
 911   g_signal_connect_swapped (window->edit_copy,
 912                     "activate",
 913                     G_CALLBACK (on_edit_copy),
 914                     window);
 915
 916   g_signal_connect_swapped (window->edit_cut,
 917                     "activate",
 918                     G_CALLBACK (on_edit_cut),
 919                     window);
 920
 921   g_signal_connect_swapped (window->edit_paste,
 922                     "activate",
 923                     G_CALLBACK (on_edit_paste),
 924                     window);
 925
 926   g_signal_connect_swapped (window->edit_find,
 927                     "activate",
 928                     G_CALLBACK (on_edit_find),
 929                     window);
 930
 931   {
 932     GSimpleAction *run_all = g_simple_action_new ("run-all", NULL);
 933
 934     g_signal_connect_swapped (run_all, "activate",
 935                               G_CALLBACK (on_run_all), window);
 936
 937     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_all));
 938   }
 939
 940   {
 941     GSimpleAction *run_current_line = g_simple_action_new ("run-current-line", NULL);
 942
 943     g_signal_connect_swapped (run_current_line, "activate",
 944                               G_CALLBACK (on_run_current_line), window);
 945
 946     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_current_line));
 947
 948     GtkApplication *app = GTK_APPLICATION (g_application_get_default ());
 949     const gchar *accels[2] = { "<Primary>R", NULL};
 950     gtk_application_set_accels_for_action (app,
 951                                            "win.run-current-line",
 952                                            accels);
 953   }
 954
 955   {
 956     GSimpleAction *run_selection = g_simple_action_new ("run-selection", NULL);
 957
 958     g_signal_connect_swapped (run_selection, "activate",
 959                               G_CALLBACK (on_run_selection), window);
 960
 961     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_selection));
 962   }
 963
 964   {
 965     GSimpleAction *run_to_end = g_simple_action_new ("run-to-end", NULL);
 966
 967     g_signal_connect_swapped (run_to_end, "activate",
 968                               G_CALLBACK (on_run_to_end), window);
 969
 970     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_to_end));
 971   }
 972
 973   {
 974     GSimpleAction *act_syntax = g_simple_action_new_stateful ("syntax", G_VARIANT_TYPE_STRING,
 975                                                                  g_variant_new_string ("auto"));
 976     g_signal_connect (act_syntax, "activate", G_CALLBACK (on_syntax), window);
 977     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (act_syntax));
 978   }
 979
 980   gtk_menu_shell_append (GTK_MENU_SHELL (menubar),
 981                          create_windows_menu (GTK_WINDOW (window)));
 982
 983   gtk_menu_shell_append (GTK_MENU_SHELL (menubar),
 984                          create_help_menu (GTK_WINDOW (window)));
 985
 986   g_object_unref (xml);
 987 }
 988
 989
 990
 991
 992
 993 GtkWidget *
 994 psppire_syntax_window_new (const char *encoding)
 995 {
 996   GObject *sw = g_object_new (psppire_syntax_window_get_type (),
 997                               "description", _("Syntax Editor"),
 998                               "encoding", encoding,
 999                               NULL);
1000
1001   GApplication *app = g_application_get_default ();
1002   gtk_application_add_window (GTK_APPLICATION (app), GTK_WINDOW (sw));
1003
1004   return GTK_WIDGET (sw);
1005 }
1006
1007 static void
1008 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
1009 {
1010   gchar *fn = g_filename_display_basename (filename);
1011
1012   GtkWidget *dialog =
1013     gtk_message_dialog_new (w,
1014                             GTK_DIALOG_DESTROY_WITH_PARENT,
1015                             GTK_MESSAGE_ERROR,
1016                             GTK_BUTTONS_CLOSE,
1017                             _("Cannot load syntax file `%s'"),
1018                             fn);
1019
1020   g_free (fn);
1021
1022   g_object_set (dialog, "icon-name", "pspp", NULL);
1023
1024   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
1025                                             "%s", err->message);
1026
1027   gtk_dialog_run (GTK_DIALOG (dialog));
1028
1029   gtk_widget_destroy (dialog);
1030 }
1031
1032 /*
1033   Loads the buffer from the file called FILENAME
1034 */
1035 static gboolean
1036 syntax_load (PsppireWindow *window, const gchar *filename,
1037              const gchar *encoding, gpointer not_used)
1038 {
1039   GError *err = NULL;
1040   gchar *text_locale = NULL;
1041   gchar *text_utf8 = NULL;
1042   gsize len_locale = -1;
1043   gsize len_utf8 = -1;
1044   GtkTextIter iter;
1045   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
1046   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
1047
1048   /* FIXME: What if it's a very big file ? */
1049   if (! g_file_get_contents (filename, &text_locale, &len_locale, &err))
1050     {
1051       error_dialog (GTK_WINDOW (window), filename, err);
1052       g_clear_error (&err);
1053       return FALSE;
1054     }
1055
1056   if (!encoding || !encoding[0])
1057     {
1058       /* Determine the file's encoding and update sw->encoding.  (The ordering
1059          is important here because encoding_guess_whole_file() often returns
1060          its argument instead of a copy of it.) */
1061       char *guessed_encoding;
1062
1063       guessed_encoding = g_strdup (encoding_guess_whole_file (sw->encoding,
1064                                                               text_locale,
1065                                                               len_locale));
1066       g_free (sw->encoding);
1067       sw->encoding = guessed_encoding;
1068     }
1069   else
1070     {
1071       g_free (sw->encoding);
1072       sw->encoding = g_strdup (encoding);
1073     }
1074
1075   text_utf8 = recode_substring_pool ("UTF-8", sw->encoding,
1076                                      ss_buffer (text_locale, len_locale),
1077                                      NULL).string;
1078   free (text_locale);
1079
1080   if (text_utf8 == NULL)
1081     {
1082       error_dialog (GTK_WINDOW (window), filename, err);
1083       g_clear_error (&err);
1084       return FALSE;
1085     }
1086
1087   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
1088
1089   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
1090
1091   gtk_text_buffer_set_modified (buffer, FALSE);
1092
1093   free (text_utf8);
1094
1095   add_most_recent (filename, "text/x-spss-syntax", sw->encoding);
1096
1097   return TRUE;
1098 }
1099
1100 \f
1101
1102 static void
1103 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1104 {
1105   iface->save = syntax_save;
1106   iface->pick_filename = syntax_pick_filename;
1107   iface->load = syntax_load;
1108 }
1109
1110
1111 \f
1112
1113 static void
1114 undo_redo_update (PsppireSyntaxWindow *window)
1115 {
1116   g_object_set (window->undo_menuitem, "enabled",
1117                 gtk_source_buffer_can_undo (window->buffer), NULL);
1118
1119   g_object_set  (window->redo_menuitem, "enabled",
1120                  gtk_source_buffer_can_redo (window->buffer), NULL);
1121 }
1122
1123 static void
1124 undo_last_edit (PsppireSyntaxWindow *window)
1125 {
1126   gtk_source_buffer_undo (window->buffer);
1127   undo_redo_update (window);
1128 }
1129
1130 static void
1131 redo_last_edit (PsppireSyntaxWindow *window)
1132 {
1133   gtk_source_buffer_redo (window->buffer);
1134   undo_redo_update (window);
1135 }
1136
1137
1138 \f
1139 /* Printing related stuff */
1140
1141
1142 static void
1143 begin_print (GtkPrintOperation *operation,
1144           GtkPrintContext   *context,
1145           PsppireSyntaxWindow *window)
1146 {
1147   window->compositor =
1148     gtk_source_print_compositor_new (window->buffer);
1149 }
1150
1151
1152 static void
1153 end_print (GtkPrintOperation *operation,
1154           GtkPrintContext   *context,
1155           PsppireSyntaxWindow *window)
1156 {
1157   g_object_unref (window->compositor);
1158   window->compositor = NULL;
1159 }
1160
1161
1162
1163 static gboolean
1164 paginate (GtkPrintOperation *operation,
1165           GtkPrintContext   *context,
1166           PsppireSyntaxWindow *window)
1167 {
1168   if (gtk_source_print_compositor_paginate (window->compositor, context))
1169     {
1170       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1171       gtk_print_operation_set_n_pages (operation, n_pages);
1172
1173       return TRUE;
1174     }
1175
1176   return FALSE;
1177 }
1178
1179 static void
1180 draw_page (GtkPrintOperation *operation,
1181            GtkPrintContext   *context,
1182            gint               page_nr,
1183           PsppireSyntaxWindow *window)
1184 {
1185   gtk_source_print_compositor_draw_page (window->compositor,
1186                                          context,
1187                                          page_nr);
1188 }
1189
1190
1191
1192 static void
1193 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1194 {
1195   GtkPrintOperationResult res;
1196
1197   GtkPrintOperation *print = gtk_print_operation_new ();
1198
1199   if (window->print_settings != NULL)
1200     gtk_print_operation_set_print_settings (print, window->print_settings);
1201
1202
1203   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1204   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1205   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1206   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1207
1208   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1209                                  GTK_WINDOW (window), NULL);
1210
1211   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1212     {
1213       if (window->print_settings != NULL)
1214         g_object_unref (window->print_settings);
1215       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1216     }
1217
1218   g_object_unref (print);
1219 }