src/ui/gui/psppire-syntax-window.c

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2008, 2009, 2010, 2011  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
  19 #include <gtk/gtk.h>
  20 #include <stdlib.h>
  21
  22 #include <gtksourceview/gtksourcebuffer.h>
  23 #include <gtksourceview/gtksourcelanguage.h>
  24 #include <gtksourceview/gtksourcelanguagemanager.h>
  25 #include <gtksourceview/gtksourceprintcompositor.h>
  26
  27 #include "language/lexer/lexer.h"
  28 #include "libpspp/encoding-guesser.h"
  29 #include "libpspp/i18n.h"
  30 #include "libpspp/message.h"
  31 #include "ui/gui/executor.h"
  32 #include "ui/gui/help-menu.h"
  33 #include "ui/gui/helper.h"
  34 #include "ui/gui/psppire-data-window.h"
  35 #include "ui/gui/psppire-encoding-selector.h"
  36 #include "ui/gui/psppire-syntax-window.h"
  37 #include "ui/gui/psppire-window-register.h"
  38 #include "ui/gui/psppire.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_free (sw->encoding);
 165   sw->encoding = NULL;
 166
 167   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 168   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
 169
 170   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
 171
 172   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
 173
 174   /* Make sure dispose does not run twice. */
 175   sw->dispose_has_run = TRUE;
 176
 177   /* Chain up to the parent class */
 178   G_OBJECT_CLASS (parent_class)->dispose (obj);
 179 }
 180
 181
 182
 183 static void
 184 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
 185 {
 186   GParamSpec *encoding_spec;
 187   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 188
 189   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
 190
 191   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
 192   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
 193   int n = g_strv_length ((gchar **) existing_paths);
 194
 195   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
 196   new_paths[n] = g_strdup (relocate (PKGDATADIR));
 197   new_paths[n+1] = NULL;
 198
 199   lm = gtk_source_language_manager_new ();
 200   gtk_source_language_manager_set_search_path (lm, new_paths);
 201
 202   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
 203
 204   if (class->lan == NULL)
 205     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
 206
 207   parent_class = g_type_class_peek_parent (class);
 208
 209   g_strfreev (new_paths);
 210
 211   encoding_spec =
 212     null_if_empty_param ("encoding",
 213                          "Character encoding",
 214                          "IANA character encoding in this syntax file",
 215                          NULL,
 216                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 217
 218   parent_class = g_type_class_peek_parent (class);
 219
 220   gobject_class->set_property = psppire_syntax_window_set_property;
 221   gobject_class->get_property = psppire_syntax_window_get_property;
 222   gobject_class->dispose = psppire_syntax_window_dispose;
 223
 224   g_object_class_install_property (gobject_class,
 225                                    PROP_ENCODING,
 226                                    encoding_spec);
 227 }
 228
 229
 230 static void
 231 psppire_syntax_window_base_init (PsppireSyntaxWindowClass *class)
 232 {
 233   GObjectClass *object_class = G_OBJECT_CLASS (class);
 234   object_class->finalize = psppire_syntax_window_finalize;
 235 }
 236
 237
 238
 239 static void
 240 psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *class,
 241                                      gpointer class_data)
 242 {
 243 }
 244
 245
 246 static void
 247 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 248                        GtkTextIter stop)
 249 {
 250   PsppireWindow *win = PSPPIRE_WINDOW (sw);
 251   struct lex_reader *reader;
 252   gchar *text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (sw->buffer), &start, &stop, FALSE);
 253   reader = lex_reader_for_string (text);
 254   g_free (text);
 255
 256   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
 257
 258   execute_syntax (psppire_default_data_window (), reader);
 259 }
 260 \f
 261 /* Delete the currently selected text */
 262 static void
 263 on_edit_delete (PsppireSyntaxWindow *sw)
 264 {
 265   GtkTextIter begin, end;
 266   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 267
 268   if ( gtk_text_buffer_get_selection_bounds (buffer, &begin, &end) )
 269     gtk_text_buffer_delete (buffer, &begin, &end);
 270 }
 271
 272
 273 /* The syntax editor's clipboard deals only with text */
 274 enum {
 275   SELECT_FMT_NULL,
 276   SELECT_FMT_TEXT,
 277 };
 278
 279
 280 static void
 281 selection_changed (PsppireSyntaxWindow *sw)
 282 {
 283   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
 284
 285   gtk_action_set_sensitive (sw->edit_copy, sel);
 286   gtk_action_set_sensitive (sw->edit_cut, sel);
 287   gtk_action_set_sensitive (sw->edit_delete, sel);
 288 }
 289
 290 /* The callback which runs when something request clipboard data */
 291 static void
 292 clipboard_get_cb (GtkClipboard     *clipboard,
 293                   GtkSelectionData *selection_data,
 294                   guint             info,
 295                   gpointer          data)
 296 {
 297   PsppireSyntaxWindow *sw = data;
 298   g_assert (info == SELECT_FMT_TEXT);
 299
 300   gtk_selection_data_set (selection_data, selection_data->target,
 301                           8,
 302                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
 303
 304 }
 305
 306 static void
 307 clipboard_clear_cb (GtkClipboard *clipboard,
 308                     gpointer data)
 309 {
 310   PsppireSyntaxWindow *sw = data;
 311   g_free (sw->cliptext);
 312   sw->cliptext = NULL;
 313 }
 314
 315
 316 static const GtkTargetEntry targets[] = {
 317   { "UTF8_STRING",   0, SELECT_FMT_TEXT },
 318   { "STRING",        0, SELECT_FMT_TEXT },
 319   { "TEXT",          0, SELECT_FMT_TEXT },
 320   { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
 321   { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
 322   { "text/plain",    0, SELECT_FMT_TEXT },
 323 };
 324
 325
 326 /*
 327   Store a clip containing the currently selected text.
 328   Returns true iff something was set.
 329   As a side effect, begin and end will be set to indicate
 330   the limits of the selected text.
 331 */
 332 static gboolean
 333 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
 334 {
 335   GtkClipboard *clipboard ;
 336   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 337
 338   if ( ! gtk_text_buffer_get_selection_bounds (buffer, begin, end) )
 339     return FALSE;
 340
 341   g_free (sw->cliptext);
 342   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
 343
 344   clipboard =
 345     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 346
 347   if (!gtk_clipboard_set_with_owner (clipboard, targets,
 348                                      G_N_ELEMENTS (targets),
 349                                      clipboard_get_cb, clipboard_clear_cb,
 350                                      G_OBJECT (sw)))
 351     clipboard_clear_cb (clipboard, sw);
 352
 353   return TRUE;
 354 }
 355
 356 static void
 357 on_edit_cut (PsppireSyntaxWindow *sw)
 358 {
 359   GtkTextIter begin, end;
 360
 361   if ( set_clip (sw, &begin, &end))
 362     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
 363 }
 364
 365 static void
 366 on_edit_copy (PsppireSyntaxWindow *sw)
 367 {
 368   GtkTextIter begin, end;
 369
 370   set_clip (sw, &begin, &end);
 371 }
 372
 373
 374 /* A callback for when the clipboard contents have been received */
 375 static void
 376 contents_received_callback (GtkClipboard *clipboard,
 377                             GtkSelectionData *sd,
 378                             gpointer data)
 379 {
 380   gchar *c;
 381   PsppireSyntaxWindow *syntax_window = data;
 382
 383   if ( sd->length < 0 )
 384     return;
 385
 386   if ( sd->type != gdk_atom_intern ("UTF8_STRING", FALSE))
 387     return;
 388
 389   c = (gchar *) sd->data;
 390
 391   gtk_text_buffer_insert_at_cursor (GTK_TEXT_BUFFER (syntax_window->buffer),
 392                                     (gchar *) sd->data,
 393                                     sd->length);
 394
 395 }
 396
 397 static void
 398 on_edit_paste (PsppireSyntaxWindow *sw)
 399 {
 400   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 401   GtkClipboard *clipboard =
 402     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 403
 404   gtk_clipboard_request_contents (clipboard,
 405                                   gdk_atom_intern ("UTF8_STRING", TRUE),
 406                                   contents_received_callback,
 407                                   sw);
 408 }
 409
 410
 411 /* Check to see if CLIP holds a target which we know how to paste,
 412    and set the sensitivity of the Paste action accordingly.
 413  */
 414 static void
 415 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 416 {
 417   gint i;
 418   gboolean compatible_target = FALSE;
 419   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 420
 421   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 422     {
 423       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 424       if ( gtk_clipboard_wait_is_target_available (clip, atom))
 425         {
 426           compatible_target = TRUE;
 427           break;
 428         }
 429     }
 430
 431   gtk_action_set_sensitive (sw->edit_paste, compatible_target);
 432 }
 433
 434
 435 \f
 436
 437 /* Parse and execute all the text in the buffer */
 438 static void
 439 on_run_all (GtkMenuItem *menuitem, gpointer user_data)
 440 {
 441   GtkTextIter begin, end;
 442   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 443
 444   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 445   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 446
 447   editor_execute_syntax (se, begin, end);
 448 }
 449
 450 /* Parse and execute the currently selected text */
 451 static void
 452 on_run_selection (GtkMenuItem *menuitem, gpointer user_data)
 453 {
 454   GtkTextIter begin, end;
 455   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 456
 457   if ( gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end) )
 458     editor_execute_syntax (se, begin, end);
 459 }
 460
 461
 462 /* Parse and execute the from the current line, to the end of the
 463    buffer */
 464 static void
 465 on_run_to_end (GtkMenuItem *menuitem, gpointer user_data)
 466 {
 467   GtkTextIter begin, end;
 468   GtkTextIter here;
 469   gint line;
 470
 471   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 472
 473   /* Get the current line */
 474   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 475                                     &here,
 476                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 477                                     );
 478
 479   line = gtk_text_iter_get_line (&here) ;
 480
 481   /* Now set begin and end to the start of this line, and end of buffer
 482      respectively */
 483   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 484   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 485
 486   editor_execute_syntax (se, begin, end);
 487 }
 488
 489
 490
 491 /* Parse and execute the current line */
 492 static void
 493 on_run_current_line (GtkMenuItem *menuitem, gpointer user_data)
 494 {
 495   GtkTextIter begin, end;
 496   GtkTextIter here;
 497   gint line;
 498
 499   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 500
 501   /* Get the current line */
 502   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 503                                     &here,
 504                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 505                                     );
 506
 507   line = gtk_text_iter_get_line (&here) ;
 508
 509   /* Now set begin and end to the start of this line, and start of
 510      following line respectively */
 511   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 512   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 513
 514   editor_execute_syntax (se, begin, end);
 515 }
 516
 517
 518
 519 /* Append ".sps" to FILENAME if necessary.
 520    The returned result must be freed when no longer required.
 521  */
 522 static gchar *
 523 append_suffix (const gchar *filename)
 524 {
 525   if ( ! g_str_has_suffix (filename, ".sps" ) &&
 526        ! g_str_has_suffix (filename, ".SPS" ) )
 527     {
 528       return g_strdup_printf ("%s.sps", filename);
 529     }
 530
 531   return xstrdup (filename);
 532 }
 533
 534 /*
 535   Save BUFFER to the file called FILENAME.
 536   FILENAME must be encoded in Glib filename encoding.
 537   If successful, clears the buffer's modified flag.
 538 */
 539 static gboolean
 540 save_editor_to_file (PsppireSyntaxWindow *se,
 541                      const gchar *filename,
 542                      GError **err)
 543 {
 544   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 545   struct substring text_locale;
 546   gboolean result ;
 547   GtkTextIter start, stop;
 548   gchar *text;
 549
 550   gchar *suffixedname;
 551   g_assert (filename);
 552
 553   suffixedname = append_suffix (filename);
 554
 555   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 556   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 557
 558   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 559
 560   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 561                                        NULL);
 562
 563   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 564                                  ss_length (text_locale), err);
 565
 566   ss_dealloc (&text_locale);
 567   g_free (suffixedname);
 568
 569   if ( result )
 570     {
 571       char *fn = g_filename_display_name (filename);
 572       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 573       g_free (fn);
 574       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 575       gtk_text_buffer_set_modified (buffer, FALSE);
 576       g_free (msg);
 577     }
 578
 579   return result;
 580 }
 581
 582
 583 /* PsppireWindow 'pick_Filename' callback. */
 584 static void
 585 syntax_pick_filename (PsppireWindow *window)
 586 {
 587   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 588   const char *default_encoding;
 589   GtkFileFilter *filter;
 590   gint response;
 591
 592   GtkWidget *dialog =
 593     gtk_file_chooser_dialog_new (_("Save Syntax"),
 594                                  GTK_WINDOW (se),
 595                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 596                                  GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 597                                  GTK_STOCK_SAVE,   GTK_RESPONSE_ACCEPT,
 598                                  NULL);
 599
 600   g_object_set (dialog, "local-only", FALSE, NULL);
 601
 602   filter = gtk_file_filter_new ();
 603   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 604   gtk_file_filter_add_pattern (filter, "*.sps");
 605   gtk_file_filter_add_pattern (filter, "*.SPS");
 606   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 607
 608   filter = gtk_file_filter_new ();
 609   gtk_file_filter_set_name (filter, _("All Files"));
 610   gtk_file_filter_add_pattern (filter, "*");
 611   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 612
 613   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 614                                                   TRUE);
 615
 616   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 617   gtk_file_chooser_set_extra_widget (
 618     GTK_FILE_CHOOSER (dialog),
 619     psppire_encoding_selector_new (default_encoding, false));
 620
 621   response = gtk_dialog_run (GTK_DIALOG (dialog));
 622
 623   if ( response == GTK_RESPONSE_ACCEPT )
 624     {
 625       gchar *encoding;
 626       char *filename;
 627
 628       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog) );
 629       psppire_window_set_filename (window, filename);
 630       free (filename);
 631
 632       encoding = psppire_encoding_selector_get_encoding (
 633         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 634       if (encoding != NULL)
 635         {
 636           g_free (se->encoding);
 637           se->encoding = encoding;
 638         }
 639     }
 640
 641   gtk_widget_destroy (dialog);
 642 }
 643
 644
 645 /* PsppireWindow 'save' callback. */
 646 static void
 647 syntax_save (PsppireWindow *se)
 648 {
 649   const gchar *filename = psppire_window_get_filename (se);
 650   GError *err = NULL;
 651   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 652   if ( err )
 653     {
 654       msg (ME, "%s", err->message);
 655       g_error_free (err);
 656     }
 657 }
 658
 659
 660 /* Callback for the File->Quit menuitem */
 661 static gboolean
 662 on_quit (GtkMenuItem *menuitem, gpointer    user_data)
 663 {
 664   psppire_quit ();
 665
 666   return FALSE;
 667 }
 668
 669
 670 static void
 671 load_and_show_syntax_window (GtkWidget *se, const gchar *filename)
 672 {
 673   gboolean ok;
 674
 675   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 676   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename);
 677   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 678
 679   if (ok )
 680     gtk_widget_show (se);
 681   else
 682     gtk_widget_destroy (se);
 683 }
 684
 685 void
 686 create_syntax_window (void)
 687 {
 688   GtkWidget *w = psppire_syntax_window_new (NULL);
 689   gtk_widget_show (w);
 690 }
 691
 692 void
 693 open_syntax_window (const char *file_name, const gchar *encoding)
 694 {
 695   GtkWidget *se = psppire_syntax_window_new (encoding);
 696
 697   if ( file_name)
 698     load_and_show_syntax_window (se, file_name);
 699 }
 700
 701
 702
 703 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 704
 705 static void
 706 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 707 {
 708   if (gtk_text_buffer_get_modified (buffer))
 709     psppire_window_set_unsaved (window);
 710 }
 711
 712 static void undo_redo_update (PsppireSyntaxWindow *window);
 713 static void undo_last_edit (PsppireSyntaxWindow *window);
 714 static void redo_last_edit (PsppireSyntaxWindow *window);
 715
 716 static void
 717 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 718 {
 719   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 720   undo_redo_update (window);
 721 }
 722
 723 static void
 724 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 725 {
 726   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 727   GtkWidget *box = gtk_vbox_new (FALSE, 0);
 728
 729   GtkWidget *menubar = get_widget_assert (xml, "menubar");
 730   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 731
 732   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 733
 734   PsppireSyntaxWindowClass *class
 735     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 736
 737   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 738   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 739
 740   window->print_settings = NULL;
 741   window->undo_menuitem = get_action_assert (xml, "edit_undo");
 742   window->redo_menuitem = get_action_assert (xml, "edit_redo");
 743
 744   if (class->lan)
 745     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 746   else
 747     window->buffer = gtk_source_buffer_new (NULL);
 748
 749   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 750
 751   g_object_set (window->buffer,
 752                 "highlight-matching-brackets", TRUE,
 753                 NULL);
 754
 755   g_object_set (text_view,
 756                 "show-line-numbers", TRUE,
 757                 "show-line-marks", TRUE,
 758                 "auto-indent", TRUE,
 759                 "indent-width", 4,
 760                 "highlight-current-line", TRUE,
 761                 NULL);
 762
 763   window->encoding = NULL;
 764
 765   window->cliptext = NULL;
 766   window->dispose_has_run = FALSE;
 767
 768   window->edit_delete = get_action_assert (xml, "edit_delete");
 769   window->edit_copy = get_action_assert (xml, "edit_copy");
 770   window->edit_cut = get_action_assert (xml, "edit_cut");
 771   window->edit_paste = get_action_assert (xml, "edit_paste");
 772
 773   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
 774
 775   window->sb = get_widget_assert (xml, "statusbar2");
 776   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
 777
 778   g_signal_connect (window->buffer, "changed",
 779                     G_CALLBACK (on_text_changed), window);
 780
 781   g_signal_connect (window->buffer, "modified-changed",
 782                     G_CALLBACK (on_modified_changed), window);
 783
 784   g_signal_connect_swapped (get_action_assert (xml, "file_print"), "activate",
 785                             G_CALLBACK (psppire_syntax_window_print), window);
 786
 787
 788   g_signal_connect_swapped (window->undo_menuitem,
 789                             "activate",
 790                             G_CALLBACK (undo_last_edit),
 791                             window);
 792
 793   g_signal_connect_swapped (window->redo_menuitem,
 794                             "activate",
 795                             G_CALLBACK (redo_last_edit),
 796                             window);
 797
 798   undo_redo_update (window);
 799
 800   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 801                                                    G_CALLBACK (selection_changed), window);
 802
 803   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 804                                           G_CALLBACK (set_paste_sensitivity), window);
 805
 806   connect_help (xml);
 807
 808   gtk_container_add (GTK_CONTAINER (window), box);
 809
 810   g_object_ref (menubar);
 811
 812   g_object_ref (sw);
 813
 814   g_object_ref (window->sb);
 815
 816   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 817   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 818   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 819
 820   gtk_widget_show_all (box);
 821
 822   g_signal_connect_swapped (get_action_assert (xml,"file_new_syntax"), "activate", G_CALLBACK (create_syntax_window), NULL);
 823
 824   g_signal_connect (get_action_assert (xml,"file_new_data"),
 825                     "activate",
 826                     G_CALLBACK (create_data_window),
 827                     window);
 828
 829   g_signal_connect_swapped (get_action_assert (xml, "file_open"),
 830                     "activate",
 831                     G_CALLBACK (psppire_window_open),
 832                     window);
 833
 834   g_signal_connect_swapped (get_action_assert (xml, "file_save"),
 835                     "activate",
 836                     G_CALLBACK (psppire_window_save),
 837                     window);
 838
 839   g_signal_connect_swapped (get_action_assert (xml, "file_save_as"),
 840                     "activate",
 841                     G_CALLBACK (psppire_window_save_as),
 842                     window);
 843
 844   g_signal_connect (get_action_assert (xml,"file_quit"),
 845                     "activate",
 846                     G_CALLBACK (on_quit),
 847                     window);
 848
 849   g_signal_connect_swapped (window->edit_delete,
 850                     "activate",
 851                     G_CALLBACK (on_edit_delete),
 852                     window);
 853
 854   g_signal_connect_swapped (window->edit_copy,
 855                     "activate",
 856                     G_CALLBACK (on_edit_copy),
 857                     window);
 858
 859   g_signal_connect_swapped (window->edit_cut,
 860                     "activate",
 861                     G_CALLBACK (on_edit_cut),
 862                     window);
 863
 864   g_signal_connect_swapped (window->edit_paste,
 865                     "activate",
 866                     G_CALLBACK (on_edit_paste),
 867                     window);
 868
 869   g_signal_connect (get_action_assert (xml,"run_all"),
 870                     "activate",
 871                     G_CALLBACK (on_run_all),
 872                     window);
 873
 874   g_signal_connect (get_action_assert (xml,"run_selection"),
 875                     "activate",
 876                     G_CALLBACK (on_run_selection),
 877                     window);
 878
 879   g_signal_connect (get_action_assert (xml,"run_current_line"),
 880                     "activate",
 881                     G_CALLBACK (on_run_current_line),
 882                     window);
 883
 884   g_signal_connect (get_action_assert (xml,"run_to_end"),
 885                     "activate",
 886                     G_CALLBACK (on_run_to_end),
 887                     window);
 888
 889   g_signal_connect (get_action_assert (xml,"windows_minimise_all"),
 890                     "activate",
 891                     G_CALLBACK (psppire_window_minimise_all), NULL);
 892
 893
 894
 895
 896
 897   {
 898   GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
 899
 900   merge_help_menu (uim);
 901
 902   PSPPIRE_WINDOW (window)->menu =
 903     GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
 904   }
 905
 906   g_object_unref (xml);
 907 }
 908
 909
 910
 911
 912
 913 GtkWidget*
 914 psppire_syntax_window_new (const char *encoding)
 915 {
 916   return GTK_WIDGET (g_object_new (psppire_syntax_window_get_type (),
 917                                    "description", _("Syntax Editor"),
 918                                    "encoding", encoding,
 919                                    NULL));
 920 }
 921
 922 static void
 923 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
 924 {
 925   gchar *fn = g_filename_display_basename (filename);
 926
 927   GtkWidget *dialog =
 928     gtk_message_dialog_new (w,
 929                             GTK_DIALOG_DESTROY_WITH_PARENT,
 930                             GTK_MESSAGE_ERROR,
 931                             GTK_BUTTONS_CLOSE,
 932                             _("Cannot load syntax file `%s'"),
 933                             fn);
 934
 935   g_free (fn);
 936
 937   g_object_set (dialog, "icon-name", "pspp", NULL);
 938
 939   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 940                                             "%s", err->message);
 941
 942   gtk_dialog_run (GTK_DIALOG (dialog));
 943
 944   gtk_widget_destroy (dialog);
 945 }
 946
 947 /*
 948   Loads the buffer from the file called FILENAME
 949 */
 950 gboolean
 951 syntax_load (PsppireWindow *window, const gchar *filename)
 952 {
 953   GError *err = NULL;
 954   gchar *text_locale = NULL;
 955   gchar *text_utf8 = NULL;
 956   gsize len_locale = -1;
 957   gsize len_utf8 = -1;
 958   GtkTextIter iter;
 959   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
 960   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 961   gchar *encoding;
 962   char *mime_type;
 963
 964   /* FIXME: What if it's a very big file ? */
 965   if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
 966     {
 967       error_dialog (GTK_WINDOW (window), filename, err);
 968       g_clear_error (&err);
 969       return FALSE;
 970     }
 971
 972   /* Determine the file's encoding and update sw->encoding.  (The ordering is
 973      important here because encoding_guess_whole_file() often returns its
 974      argument instead of a copy of it.) */
 975   encoding = g_strdup (encoding_guess_whole_file (sw->encoding, text_locale,
 976                                                   len_locale));
 977   g_free (sw->encoding);
 978   sw->encoding = encoding;
 979
 980   text_utf8 = recode_substring_pool ("UTF-8", encoding,
 981                                      ss_buffer (text_locale, len_locale),
 982                                      NULL).string;
 983   free (text_locale);
 984
 985   if ( text_utf8 == NULL )
 986     {
 987       error_dialog (GTK_WINDOW (window), filename, err);
 988       g_clear_error (&err);
 989       return FALSE;
 990     }
 991
 992   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
 993
 994   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
 995
 996   gtk_text_buffer_set_modified (buffer, FALSE);
 997
 998   free (text_utf8);
 999
1000   mime_type = xasprintf ("text/x-spss-syntax; charset=%s", sw->encoding);
1001   add_most_recent (filename, mime_type);
1002   free (mime_type);
1003
1004   return TRUE;
1005 }
1006
1007 \f
1008
1009 static void
1010 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1011 {
1012   iface->save = syntax_save;
1013   iface->pick_filename = syntax_pick_filename;
1014   iface->load = syntax_load;
1015 }
1016
1017
1018 \f
1019
1020 static void
1021 undo_redo_update (PsppireSyntaxWindow *window)
1022 {
1023   gtk_action_set_sensitive (window->undo_menuitem,
1024                             gtk_source_buffer_can_undo (window->buffer));
1025
1026   gtk_action_set_sensitive (window->redo_menuitem,
1027                             gtk_source_buffer_can_redo (window->buffer));
1028 }
1029
1030 static void
1031 undo_last_edit (PsppireSyntaxWindow *window)
1032 {
1033   gtk_source_buffer_undo (window->buffer);
1034   undo_redo_update (window);
1035 }
1036
1037 static void
1038 redo_last_edit (PsppireSyntaxWindow *window)
1039 {
1040   gtk_source_buffer_redo (window->buffer);
1041   undo_redo_update (window);
1042 }
1043
1044
1045 \f
1046 /* Printing related stuff */
1047
1048
1049 static void
1050 begin_print (GtkPrintOperation *operation,
1051           GtkPrintContext   *context,
1052           PsppireSyntaxWindow *window)
1053 {
1054   window->compositor =
1055     gtk_source_print_compositor_new (window->buffer);
1056 }
1057
1058
1059 static void
1060 end_print (GtkPrintOperation *operation,
1061           GtkPrintContext   *context,
1062           PsppireSyntaxWindow *window)
1063 {
1064   g_object_unref (window->compositor);
1065   window->compositor = NULL;
1066 }
1067
1068
1069
1070 static gboolean
1071 paginate (GtkPrintOperation *operation,
1072           GtkPrintContext   *context,
1073           PsppireSyntaxWindow *window)
1074 {
1075   if (gtk_source_print_compositor_paginate (window->compositor, context))
1076     {
1077       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1078       gtk_print_operation_set_n_pages (operation, n_pages);
1079
1080       return TRUE;
1081     }
1082
1083   return FALSE;
1084 }
1085
1086 static void
1087 draw_page (GtkPrintOperation *operation,
1088            GtkPrintContext   *context,
1089            gint               page_nr,
1090           PsppireSyntaxWindow *window)
1091 {
1092   gtk_source_print_compositor_draw_page (window->compositor,
1093                                          context,
1094                                          page_nr);
1095 }
1096
1097
1098
1099 static void
1100 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1101 {
1102   GtkPrintOperationResult res;
1103
1104   GtkPrintOperation *print = gtk_print_operation_new ();
1105
1106   if (window->print_settings != NULL)
1107     gtk_print_operation_set_print_settings (print, window->print_settings);
1108
1109
1110   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1111   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1112   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1113   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1114
1115   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1116                                  GTK_WINDOW (window), NULL);
1117
1118   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1119     {
1120       if (window->print_settings != NULL)
1121         g_object_unref (window->print_settings);
1122       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1123     }
1124
1125   g_object_unref (print);
1126 }