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
  28 #include "language/lexer/lexer.h"
  29 #include "libpspp/encoding-guesser.h"
  30 #include "libpspp/i18n.h"
  31 #include "libpspp/message.h"
  32 #include "ui/gui/executor.h"
  33 #include "ui/gui/help-menu.h"
  34 #include "ui/gui/helper.h"
  35 #include "ui/gui/psppire-data-window.h"
  36 #include "ui/gui/psppire-encoding-selector.h"
  37 #include "ui/gui/psppire-syntax-window.h"
  38 #include "ui/gui/psppire-syntax-window.h"
  39 #include "ui/gui/psppire-window-register.h"
  40 #include "ui/gui/psppire.h"
  41 #include "ui/gui/psppire.h"
  42
  43 #include "gl/localcharset.h"
  44 #include "gl/xalloc.h"
  45 #include "gl/xvasprintf.h"
  46
  47 #include <gettext.h>
  48 #define _(msgid) gettext (msgid)
  49 #define N_(msgid) msgid
  50
  51 static void psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *, gpointer);
  52 static void psppire_syntax_window_base_init     (PsppireSyntaxWindowClass *class);
  53 static void psppire_syntax_window_class_init    (PsppireSyntaxWindowClass *class);
  54 static void psppire_syntax_window_init          (PsppireSyntaxWindow      *syntax_editor);
  55
  56
  57 static void psppire_syntax_window_iface_init (PsppireWindowIface *iface);
  58
  59
  60 /* Properties */
  61 enum
  62 {
  63   PROP_0,
  64   PROP_ENCODING
  65 };
  66
  67 static void
  68 psppire_syntax_window_set_property (GObject         *object,
  69                                     guint            prop_id,
  70                                     const GValue    *value,
  71                                     GParamSpec      *pspec)
  72 {
  73   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  74
  75   switch (prop_id)
  76     {
  77     case PROP_ENCODING:
  78       g_free (window->encoding);
  79       window->encoding = g_value_dup_string (value);
  80       break;
  81     default:
  82       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  83       break;
  84     };
  85 }
  86
  87
  88 static void
  89 psppire_syntax_window_get_property (GObject         *object,
  90                                     guint            prop_id,
  91                                     GValue          *value,
  92                                     GParamSpec      *pspec)
  93 {
  94   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  95
  96   switch (prop_id)
  97     {
  98     case PROP_ENCODING:
  99       g_value_set_string (value, window->encoding);
 100       break;
 101     default:
 102       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 103       break;
 104     };
 105 }
 106
 107 GType
 108 psppire_syntax_window_get_type (void)
 109 {
 110   static GType psppire_syntax_window_type = 0;
 111
 112   if (!psppire_syntax_window_type)
 113     {
 114       static const GTypeInfo psppire_syntax_window_info =
 115       {
 116         sizeof (PsppireSyntaxWindowClass),
 117         (GBaseInitFunc) psppire_syntax_window_base_init,
 118         (GBaseFinalizeFunc) psppire_syntax_window_base_finalize,
 119         (GClassInitFunc)psppire_syntax_window_class_init,
 120         (GClassFinalizeFunc) NULL,
 121         NULL,
 122         sizeof (PsppireSyntaxWindow),
 123         0,
 124         (GInstanceInitFunc) psppire_syntax_window_init,
 125       };
 126
 127       static const GInterfaceInfo window_interface_info =
 128         {
 129           (GInterfaceInitFunc) psppire_syntax_window_iface_init,
 130           NULL,
 131           NULL
 132         };
 133
 134       psppire_syntax_window_type =
 135         g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireSyntaxWindow",
 136                                 &psppire_syntax_window_info, 0);
 137
 138       g_type_add_interface_static (psppire_syntax_window_type,
 139                                    PSPPIRE_TYPE_WINDOW_MODEL,
 140                                    &window_interface_info);
 141     }
 142
 143   return psppire_syntax_window_type;
 144 }
 145
 146 static GObjectClass *parent_class ;
 147
 148 static void
 149 psppire_syntax_window_finalize (GObject *object)
 150 {
 151   if (G_OBJECT_CLASS (parent_class)->finalize)
 152     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
 153 }
 154
 155
 156 static void
 157 psppire_syntax_window_dispose (GObject *obj)
 158 {
 159   PsppireSyntaxWindow *sw = (PsppireSyntaxWindow *)obj;
 160
 161   GtkClipboard *clip_selection;
 162   GtkClipboard *clip_primary;
 163
 164   if (sw->dispose_has_run)
 165     return;
 166
 167   g_free (sw->encoding);
 168   sw->encoding = NULL;
 169
 170   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 171   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
 172
 173   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
 174
 175   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
 176
 177   /* Make sure dispose does not run twice. */
 178   sw->dispose_has_run = TRUE;
 179
 180   /* Chain up to the parent class */
 181   G_OBJECT_CLASS (parent_class)->dispose (obj);
 182 }
 183
 184
 185
 186 static void
 187 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
 188 {
 189   GParamSpec *encoding_spec;
 190   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 191
 192   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
 193
 194   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
 195   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
 196   int n = g_strv_length ((gchar **) existing_paths);
 197
 198   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
 199   new_paths[n] = g_strdup (relocate (PKGDATADIR));
 200   new_paths[n+1] = NULL;
 201
 202   lm = gtk_source_language_manager_new ();
 203   gtk_source_language_manager_set_search_path (lm, new_paths);
 204
 205   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
 206
 207   if (class->lan == NULL)
 208     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
 209
 210   parent_class = g_type_class_peek_parent (class);
 211
 212   g_strfreev (new_paths);
 213
 214   encoding_spec =
 215     null_if_empty_param ("encoding",
 216                          "Character encoding",
 217                          "IANA character encoding in this syntax file",
 218                          NULL,
 219                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 220
 221   parent_class = g_type_class_peek_parent (class);
 222
 223   gobject_class->set_property = psppire_syntax_window_set_property;
 224   gobject_class->get_property = psppire_syntax_window_get_property;
 225   gobject_class->dispose = psppire_syntax_window_dispose;
 226
 227   g_object_class_install_property (gobject_class,
 228                                    PROP_ENCODING,
 229                                    encoding_spec);
 230 }
 231
 232
 233 static void
 234 psppire_syntax_window_base_init (PsppireSyntaxWindowClass *class)
 235 {
 236   GObjectClass *object_class = G_OBJECT_CLASS (class);
 237   object_class->finalize = psppire_syntax_window_finalize;
 238 }
 239
 240
 241
 242 static void
 243 psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *class,
 244                                      gpointer class_data)
 245 {
 246 }
 247
 248
 249 static void
 250 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 251                        GtkTextIter stop)
 252 {
 253   PsppireWindow *win = PSPPIRE_WINDOW (sw);
 254   struct lex_reader *reader;
 255   gchar *text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (sw->buffer), &start, &stop, FALSE);
 256   reader = lex_reader_for_string (text);
 257   g_free (text);
 258
 259   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
 260
 261   execute_syntax (psppire_default_data_window (), reader);
 262 }
 263 \f
 264 /* Delete the currently selected text */
 265 static void
 266 on_edit_delete (PsppireSyntaxWindow *sw)
 267 {
 268   GtkTextIter begin, end;
 269   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 270
 271   if ( gtk_text_buffer_get_selection_bounds (buffer, &begin, &end) )
 272     gtk_text_buffer_delete (buffer, &begin, &end);
 273 }
 274
 275
 276 /* The syntax editor's clipboard deals only with text */
 277 enum {
 278   SELECT_FMT_NULL,
 279   SELECT_FMT_TEXT,
 280 };
 281
 282
 283 static void
 284 selection_changed (PsppireSyntaxWindow *sw)
 285 {
 286   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
 287
 288   gtk_action_set_sensitive (sw->edit_copy, sel);
 289   gtk_action_set_sensitive (sw->edit_cut, sel);
 290   gtk_action_set_sensitive (sw->edit_delete, sel);
 291 }
 292
 293 /* The callback which runs when something request clipboard data */
 294 static void
 295 clipboard_get_cb (GtkClipboard     *clipboard,
 296                   GtkSelectionData *selection_data,
 297                   guint             info,
 298                   gpointer          data)
 299 {
 300   PsppireSyntaxWindow *sw = data;
 301   g_assert (info == SELECT_FMT_TEXT);
 302
 303   gtk_selection_data_set (selection_data, selection_data->target,
 304                           8,
 305                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
 306
 307 }
 308
 309 static void
 310 clipboard_clear_cb (GtkClipboard *clipboard,
 311                     gpointer data)
 312 {
 313   PsppireSyntaxWindow *sw = data;
 314   g_free (sw->cliptext);
 315   sw->cliptext = NULL;
 316 }
 317
 318
 319 static const GtkTargetEntry targets[] = {
 320   { "UTF8_STRING",   0, SELECT_FMT_TEXT },
 321   { "STRING",        0, SELECT_FMT_TEXT },
 322   { "TEXT",          0, SELECT_FMT_TEXT },
 323   { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
 324   { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
 325   { "text/plain",    0, SELECT_FMT_TEXT },
 326 };
 327
 328
 329 /*
 330   Store a clip containing the currently selected text.
 331   Returns true iff something was set.
 332   As a side effect, begin and end will be set to indicate
 333   the limits of the selected text.
 334 */
 335 static gboolean
 336 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
 337 {
 338   GtkClipboard *clipboard ;
 339   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 340
 341   if ( ! gtk_text_buffer_get_selection_bounds (buffer, begin, end) )
 342     return FALSE;
 343
 344   g_free (sw->cliptext);
 345   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
 346
 347   clipboard =
 348     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 349
 350   if (!gtk_clipboard_set_with_owner (clipboard, targets,
 351                                      G_N_ELEMENTS (targets),
 352                                      clipboard_get_cb, clipboard_clear_cb,
 353                                      G_OBJECT (sw)))
 354     clipboard_clear_cb (clipboard, sw);
 355
 356   return TRUE;
 357 }
 358
 359 static void
 360 on_edit_cut (PsppireSyntaxWindow *sw)
 361 {
 362   GtkTextIter begin, end;
 363
 364   if ( set_clip (sw, &begin, &end))
 365     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
 366 }
 367
 368 static void
 369 on_edit_copy (PsppireSyntaxWindow *sw)
 370 {
 371   GtkTextIter begin, end;
 372
 373   set_clip (sw, &begin, &end);
 374 }
 375
 376
 377 /* A callback for when the clipboard contents have been received */
 378 static void
 379 contents_received_callback (GtkClipboard *clipboard,
 380                             GtkSelectionData *sd,
 381                             gpointer data)
 382 {
 383   gchar *c;
 384   PsppireSyntaxWindow *syntax_window = data;
 385
 386   if ( sd->length < 0 )
 387     return;
 388
 389   if ( sd->type != gdk_atom_intern ("UTF8_STRING", FALSE))
 390     return;
 391
 392   c = (gchar *) sd->data;
 393
 394   gtk_text_buffer_insert_at_cursor (GTK_TEXT_BUFFER (syntax_window->buffer),
 395                                     (gchar *) sd->data,
 396                                     sd->length);
 397
 398 }
 399
 400 static void
 401 on_edit_paste (PsppireSyntaxWindow *sw)
 402 {
 403   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 404   GtkClipboard *clipboard =
 405     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 406
 407   gtk_clipboard_request_contents (clipboard,
 408                                   gdk_atom_intern ("UTF8_STRING", TRUE),
 409                                   contents_received_callback,
 410                                   sw);
 411 }
 412
 413
 414 /* Check to see if CLIP holds a target which we know how to paste,
 415    and set the sensitivity of the Paste action accordingly.
 416  */
 417 static void
 418 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 419 {
 420   gint i;
 421   gboolean compatible_target = FALSE;
 422   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 423
 424   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 425     {
 426       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 427       if ( gtk_clipboard_wait_is_target_available (clip, atom))
 428         {
 429           compatible_target = TRUE;
 430           break;
 431         }
 432     }
 433
 434   gtk_action_set_sensitive (sw->edit_paste, compatible_target);
 435 }
 436
 437
 438 \f
 439
 440 /* Parse and execute all the text in the buffer */
 441 static void
 442 on_run_all (GtkMenuItem *menuitem, gpointer user_data)
 443 {
 444   GtkTextIter begin, end;
 445   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 446
 447   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 448   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 449
 450   editor_execute_syntax (se, begin, end);
 451 }
 452
 453 /* Parse and execute the currently selected text */
 454 static void
 455 on_run_selection (GtkMenuItem *menuitem, gpointer user_data)
 456 {
 457   GtkTextIter begin, end;
 458   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 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 (GtkMenuItem *menuitem, gpointer user_data)
 469 {
 470   GtkTextIter begin, end;
 471   GtkTextIter here;
 472   gint line;
 473
 474   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 475
 476   /* Get the current line */
 477   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 478                                     &here,
 479                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 480                                     );
 481
 482   line = gtk_text_iter_get_line (&here) ;
 483
 484   /* Now set begin and end to the start of this line, and end of buffer
 485      respectively */
 486   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 487   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 488
 489   editor_execute_syntax (se, begin, end);
 490 }
 491
 492
 493
 494 /* Parse and execute the current line */
 495 static void
 496 on_run_current_line (GtkMenuItem *menuitem, gpointer user_data)
 497 {
 498   GtkTextIter begin, end;
 499   GtkTextIter here;
 500   gint line;
 501
 502   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 503
 504   /* Get the current line */
 505   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 506                                     &here,
 507                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 508                                     );
 509
 510   line = gtk_text_iter_get_line (&here) ;
 511
 512   /* Now set begin and end to the start of this line, and start of
 513      following line respectively */
 514   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 515   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 516
 517   editor_execute_syntax (se, begin, end);
 518 }
 519
 520
 521
 522 /* Append ".sps" to FILENAME if necessary.
 523    The returned result must be freed when no longer required.
 524  */
 525 static gchar *
 526 append_suffix (const gchar *filename)
 527 {
 528   if ( ! g_str_has_suffix (filename, ".sps" ) &&
 529        ! g_str_has_suffix (filename, ".SPS" ) )
 530     {
 531       return g_strdup_printf ("%s.sps", filename);
 532     }
 533
 534   return xstrdup (filename);
 535 }
 536
 537 /*
 538   Save BUFFER to the file called FILENAME.
 539   FILENAME must be encoded in Glib filename encoding.
 540   If successful, clears the buffer's modified flag.
 541 */
 542 static gboolean
 543 save_editor_to_file (PsppireSyntaxWindow *se,
 544                      const gchar *filename,
 545                      GError **err)
 546 {
 547   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 548   struct substring text_locale;
 549   gboolean result ;
 550   GtkTextIter start, stop;
 551   gchar *text;
 552
 553   gchar *suffixedname;
 554   g_assert (filename);
 555
 556   suffixedname = append_suffix (filename);
 557
 558   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 559   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 560
 561   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 562
 563   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 564                                        NULL);
 565
 566   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 567                                  ss_length (text_locale), err);
 568
 569   ss_dealloc (&text_locale);
 570   g_free (suffixedname);
 571
 572   if ( result )
 573     {
 574       char *fn = g_filename_display_name (filename);
 575       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 576       g_free (fn);
 577       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 578       gtk_text_buffer_set_modified (buffer, FALSE);
 579       g_free (msg);
 580     }
 581
 582   return result;
 583 }
 584
 585
 586 /* PsppireWindow 'pick_Filename' callback. */
 587 static void
 588 syntax_pick_filename (PsppireWindow *window)
 589 {
 590   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 591   const char *default_encoding;
 592   GtkFileFilter *filter;
 593   gint response;
 594
 595   GtkWidget *dialog =
 596     gtk_file_chooser_dialog_new (_("Save Syntax"),
 597                                  GTK_WINDOW (se),
 598                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 599                                  GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 600                                  GTK_STOCK_SAVE,   GTK_RESPONSE_ACCEPT,
 601                                  NULL);
 602
 603   filter = gtk_file_filter_new ();
 604   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 605   gtk_file_filter_add_pattern (filter, "*.sps");
 606   gtk_file_filter_add_pattern (filter, "*.SPS");
 607   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 608
 609   filter = gtk_file_filter_new ();
 610   gtk_file_filter_set_name (filter, _("All Files"));
 611   gtk_file_filter_add_pattern (filter, "*");
 612   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 613
 614   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 615                                                   TRUE);
 616
 617   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 618   gtk_file_chooser_set_extra_widget (
 619     GTK_FILE_CHOOSER (dialog),
 620     psppire_encoding_selector_new (default_encoding, false));
 621
 622   response = gtk_dialog_run (GTK_DIALOG (dialog));
 623
 624   if ( response == GTK_RESPONSE_ACCEPT )
 625     {
 626       gchar *encoding;
 627       char *filename;
 628
 629       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog) );
 630       psppire_window_set_filename (window, filename);
 631       free (filename);
 632
 633       encoding = psppire_encoding_selector_get_encoding (
 634         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 635       if (encoding != NULL)
 636         {
 637           g_free (se->encoding);
 638           se->encoding = encoding;
 639         }
 640     }
 641
 642   gtk_widget_destroy (dialog);
 643 }
 644
 645
 646 /* PsppireWindow 'save' callback. */
 647 static void
 648 syntax_save (PsppireWindow *se)
 649 {
 650   const gchar *filename = psppire_window_get_filename (se);
 651   GError *err = NULL;
 652   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 653   if ( err )
 654     {
 655       msg (ME, "%s", err->message);
 656       g_error_free (err);
 657     }
 658 }
 659
 660
 661 /* Callback for the File->Quit menuitem */
 662 static gboolean
 663 on_quit (GtkMenuItem *menuitem, gpointer    user_data)
 664 {
 665   psppire_quit ();
 666
 667   return FALSE;
 668 }
 669
 670
 671 static void
 672 load_and_show_syntax_window (GtkWidget *se, const gchar *filename)
 673 {
 674   gboolean ok;
 675
 676   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 677   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename);
 678   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 679
 680   if (ok )
 681     gtk_widget_show (se);
 682   else
 683     gtk_widget_destroy (se);
 684 }
 685
 686 void
 687 create_syntax_window (void)
 688 {
 689   GtkWidget *w = psppire_syntax_window_new (NULL);
 690   gtk_widget_show (w);
 691 }
 692
 693 void
 694 open_syntax_window (const char *file_name, const gchar *encoding)
 695 {
 696   GtkWidget *se = psppire_syntax_window_new (encoding);
 697
 698   if ( file_name)
 699     load_and_show_syntax_window (se, file_name);
 700 }
 701
 702
 703
 704 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 705
 706 static void
 707 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 708 {
 709   if (gtk_text_buffer_get_modified (buffer))
 710     psppire_window_set_unsaved (window);
 711 }
 712
 713 static void undo_redo_update (PsppireSyntaxWindow *window);
 714 static void undo_last_edit (PsppireSyntaxWindow *window);
 715 static void redo_last_edit (PsppireSyntaxWindow *window);
 716
 717 static void
 718 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 719 {
 720   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 721   undo_redo_update (window);
 722 }
 723
 724 static void
 725 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 726 {
 727   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 728   GtkWidget *box = gtk_vbox_new (FALSE, 0);
 729
 730   GtkWidget *menubar = get_widget_assert (xml, "menubar");
 731   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 732
 733   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 734
 735   PsppireSyntaxWindowClass *class
 736     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 737
 738   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 739   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 740
 741   window->print_settings = NULL;
 742   window->undo_menuitem = get_action_assert (xml, "edit_undo");
 743   window->redo_menuitem = get_action_assert (xml, "edit_redo");
 744
 745   if (class->lan)
 746     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 747   else
 748     window->buffer = gtk_source_buffer_new (NULL);
 749
 750   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 751
 752   g_object_set (window->buffer,
 753                 "highlight-matching-brackets", TRUE,
 754                 NULL);
 755
 756   g_object_set (text_view,
 757                 "show-line-numbers", TRUE,
 758                 "show-line-marks", TRUE,
 759                 "auto-indent", TRUE,
 760                 "indent-width", 4,
 761                 "highlight-current-line", TRUE,
 762                 NULL);
 763
 764   window->encoding = NULL;
 765
 766   window->cliptext = NULL;
 767   window->dispose_has_run = FALSE;
 768
 769   window->edit_delete = get_action_assert (xml, "edit_delete");
 770   window->edit_copy = get_action_assert (xml, "edit_copy");
 771   window->edit_cut = get_action_assert (xml, "edit_cut");
 772   window->edit_paste = get_action_assert (xml, "edit_paste");
 773
 774   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
 775
 776   window->sb = get_widget_assert (xml, "statusbar2");
 777   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
 778
 779   g_signal_connect (window->buffer, "changed",
 780                     G_CALLBACK (on_text_changed), window);
 781
 782   g_signal_connect (window->buffer, "modified-changed",
 783                     G_CALLBACK (on_modified_changed), window);
 784
 785   g_signal_connect_swapped (get_action_assert (xml, "file_print"), "activate",
 786                             G_CALLBACK (psppire_syntax_window_print), window);
 787
 788
 789   g_signal_connect_swapped (window->undo_menuitem,
 790                             "activate",
 791                             G_CALLBACK (undo_last_edit),
 792                             window);
 793
 794   g_signal_connect_swapped (window->redo_menuitem,
 795                             "activate",
 796                             G_CALLBACK (redo_last_edit),
 797                             window);
 798
 799   undo_redo_update (window);
 800
 801   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 802                                                    G_CALLBACK (selection_changed), window);
 803
 804   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 805                                           G_CALLBACK (set_paste_sensitivity), window);
 806
 807   connect_help (xml);
 808
 809   gtk_container_add (GTK_CONTAINER (window), box);
 810
 811   g_object_ref (menubar);
 812
 813   g_object_ref (sw);
 814
 815   g_object_ref (window->sb);
 816
 817   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 818   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 819   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 820
 821   gtk_widget_show_all (box);
 822
 823   g_signal_connect_swapped (get_action_assert (xml,"file_new_syntax"), "activate", G_CALLBACK (create_syntax_window), NULL);
 824
 825   g_signal_connect (get_action_assert (xml,"file_new_data"),
 826                     "activate",
 827                     G_CALLBACK (create_data_window),
 828                     window);
 829
 830   g_signal_connect_swapped (get_action_assert (xml, "file_open"),
 831                     "activate",
 832                     G_CALLBACK (psppire_window_open),
 833                     window);
 834
 835   g_signal_connect_swapped (get_action_assert (xml, "file_save"),
 836                     "activate",
 837                     G_CALLBACK (psppire_window_save),
 838                     window);
 839
 840   g_signal_connect_swapped (get_action_assert (xml, "file_save_as"),
 841                     "activate",
 842                     G_CALLBACK (psppire_window_save_as),
 843                     window);
 844
 845   g_signal_connect (get_action_assert (xml,"file_quit"),
 846                     "activate",
 847                     G_CALLBACK (on_quit),
 848                     window);
 849
 850   g_signal_connect_swapped (window->edit_delete,
 851                     "activate",
 852                     G_CALLBACK (on_edit_delete),
 853                     window);
 854
 855   g_signal_connect_swapped (window->edit_copy,
 856                     "activate",
 857                     G_CALLBACK (on_edit_copy),
 858                     window);
 859
 860   g_signal_connect_swapped (window->edit_cut,
 861                     "activate",
 862                     G_CALLBACK (on_edit_cut),
 863                     window);
 864
 865   g_signal_connect_swapped (window->edit_paste,
 866                     "activate",
 867                     G_CALLBACK (on_edit_paste),
 868                     window);
 869
 870   g_signal_connect (get_action_assert (xml,"run_all"),
 871                     "activate",
 872                     G_CALLBACK (on_run_all),
 873                     window);
 874
 875   g_signal_connect (get_action_assert (xml,"run_selection"),
 876                     "activate",
 877                     G_CALLBACK (on_run_selection),
 878                     window);
 879
 880   g_signal_connect (get_action_assert (xml,"run_current_line"),
 881                     "activate",
 882                     G_CALLBACK (on_run_current_line),
 883                     window);
 884
 885   g_signal_connect (get_action_assert (xml,"run_to_end"),
 886                     "activate",
 887                     G_CALLBACK (on_run_to_end),
 888                     window);
 889
 890   g_signal_connect (get_action_assert (xml,"windows_minimise_all"),
 891                     "activate",
 892                     G_CALLBACK (psppire_window_minimise_all), NULL);
 893
 894
 895
 896
 897
 898   {
 899   GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
 900
 901   merge_help_menu (uim);
 902
 903   PSPPIRE_WINDOW (window)->menu =
 904     GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
 905   }
 906
 907   g_object_unref (xml);
 908 }
 909
 910
 911
 912
 913
 914 GtkWidget*
 915 psppire_syntax_window_new (const char *encoding)
 916 {
 917   return GTK_WIDGET (g_object_new (psppire_syntax_window_get_type (),
 918                                    "description", _("Syntax Editor"),
 919                                    "encoding", encoding,
 920                                    NULL));
 921 }
 922
 923 static void
 924 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
 925 {
 926   gchar *fn = g_filename_display_basename (filename);
 927
 928   GtkWidget *dialog =
 929     gtk_message_dialog_new (w,
 930                             GTK_DIALOG_DESTROY_WITH_PARENT,
 931                             GTK_MESSAGE_ERROR,
 932                             GTK_BUTTONS_CLOSE,
 933                             _("Cannot load syntax file `%s'"),
 934                             fn);
 935
 936   g_free (fn);
 937
 938   g_object_set (dialog, "icon-name", "psppicon", NULL);
 939
 940   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 941                                             "%s", err->message);
 942
 943   gtk_dialog_run (GTK_DIALOG (dialog));
 944
 945   gtk_widget_destroy (dialog);
 946 }
 947
 948 /*
 949   Loads the buffer from the file called FILENAME
 950 */
 951 gboolean
 952 syntax_load (PsppireWindow *window, const gchar *filename)
 953 {
 954   GError *err = NULL;
 955   gchar *text_locale = NULL;
 956   gchar *text_utf8 = NULL;
 957   gsize len_locale = -1;
 958   gsize len_utf8 = -1;
 959   GtkTextIter iter;
 960   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
 961   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 962   gchar *encoding;
 963   char *mime_type;
 964
 965   /* FIXME: What if it's a very big file ? */
 966   if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
 967     {
 968       error_dialog (GTK_WINDOW (window), filename, err);
 969       g_clear_error (&err);
 970       return FALSE;
 971     }
 972
 973   /* Determine the file's encoding and update sw->encoding.  (The ordering is
 974      important here because encoding_guess_whole_file() often returns its
 975      argument instead of a copy of it.) */
 976   encoding = g_strdup (encoding_guess_whole_file (sw->encoding, text_locale,
 977                                                   len_locale));
 978   g_free (sw->encoding);
 979   sw->encoding = encoding;
 980
 981   text_utf8 = recode_substring_pool ("UTF-8", encoding,
 982                                      ss_buffer (text_locale, len_locale),
 983                                      NULL).string;
 984   free (text_locale);
 985
 986   if ( text_utf8 == NULL )
 987     {
 988       error_dialog (GTK_WINDOW (window), filename, err);
 989       g_clear_error (&err);
 990       return FALSE;
 991     }
 992
 993   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
 994
 995   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
 996
 997   gtk_text_buffer_set_modified (buffer, FALSE);
 998
 999   free (text_utf8);
1000
1001   mime_type = xasprintf ("text/x-spss-syntax; charset=%s", sw->encoding);
1002   add_most_recent (filename, mime_type);
1003   free (mime_type);
1004
1005   return TRUE;
1006 }
1007
1008 \f
1009
1010 static void
1011 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1012 {
1013   iface->save = syntax_save;
1014   iface->pick_filename = syntax_pick_filename;
1015   iface->load = syntax_load;
1016 }
1017
1018
1019 \f
1020
1021 static void
1022 undo_redo_update (PsppireSyntaxWindow *window)
1023 {
1024   gtk_action_set_sensitive (window->undo_menuitem,
1025                             gtk_source_buffer_can_undo (window->buffer));
1026
1027   gtk_action_set_sensitive (window->redo_menuitem,
1028                             gtk_source_buffer_can_redo (window->buffer));
1029 }
1030
1031 static void
1032 undo_last_edit (PsppireSyntaxWindow *window)
1033 {
1034   gtk_source_buffer_undo (window->buffer);
1035   undo_redo_update (window);
1036 }
1037
1038 static void
1039 redo_last_edit (PsppireSyntaxWindow *window)
1040 {
1041   gtk_source_buffer_redo (window->buffer);
1042   undo_redo_update (window);
1043 }
1044
1045
1046 \f
1047 /* Printing related stuff */
1048
1049
1050 static void
1051 begin_print (GtkPrintOperation *operation,
1052           GtkPrintContext   *context,
1053           PsppireSyntaxWindow *window)
1054 {
1055   window->compositor =
1056     gtk_source_print_compositor_new (window->buffer);
1057 }
1058
1059
1060 static void
1061 end_print (GtkPrintOperation *operation,
1062           GtkPrintContext   *context,
1063           PsppireSyntaxWindow *window)
1064 {
1065   g_object_unref (window->compositor);
1066   window->compositor = NULL;
1067 }
1068
1069
1070
1071 static gboolean
1072 paginate (GtkPrintOperation *operation,
1073           GtkPrintContext   *context,
1074           PsppireSyntaxWindow *window)
1075 {
1076   if (gtk_source_print_compositor_paginate (window->compositor, context))
1077     {
1078       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1079       gtk_print_operation_set_n_pages (operation, n_pages);
1080
1081       return TRUE;
1082     }
1083
1084   return FALSE;
1085 }
1086
1087 static void
1088 draw_page (GtkPrintOperation *operation,
1089            GtkPrintContext   *context,
1090            gint               page_nr,
1091           PsppireSyntaxWindow *window)
1092 {
1093   gtk_source_print_compositor_draw_page (window->compositor,
1094                                          context,
1095                                          page_nr);
1096 }
1097
1098
1099
1100 static void
1101 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1102 {
1103   GtkPrintOperationResult res;
1104
1105   GtkPrintOperation *print = gtk_print_operation_new ();
1106
1107   if (window->print_settings != NULL)
1108     gtk_print_operation_set_print_settings (print, window->print_settings);
1109
1110
1111   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1112   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1113   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1114   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1115
1116   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1117                                  GTK_WINDOW (window), NULL);
1118
1119   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1120     {
1121       if (window->print_settings != NULL)
1122         g_object_unref (window->print_settings);
1123       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1124     }
1125
1126   g_object_unref (print);
1127 }