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-lex-reader.h"
  37 #include "ui/gui/psppire-syntax-window.h"
  38 #include "ui/gui/psppire-window-register.h"
  39 #include "ui/gui/psppire.h"
  40
  41 #include "gl/localcharset.h"
  42 #include "gl/xalloc.h"
  43 #include "gl/xvasprintf.h"
  44
  45 #include <gettext.h>
  46 #define _(msgid) gettext (msgid)
  47 #define N_(msgid) msgid
  48
  49 static void psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *, gpointer);
  50 static void psppire_syntax_window_base_init     (PsppireSyntaxWindowClass *class);
  51 static void psppire_syntax_window_class_init    (PsppireSyntaxWindowClass *class);
  52 static void psppire_syntax_window_init          (PsppireSyntaxWindow      *syntax_editor);
  53
  54
  55 static void psppire_syntax_window_iface_init (PsppireWindowIface *iface);
  56
  57
  58 /* Properties */
  59 enum
  60 {
  61   PROP_0,
  62   PROP_ENCODING
  63 };
  64
  65 static void
  66 psppire_syntax_window_set_property (GObject         *object,
  67                                     guint            prop_id,
  68                                     const GValue    *value,
  69                                     GParamSpec      *pspec)
  70 {
  71   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  72
  73   switch (prop_id)
  74     {
  75     case PROP_ENCODING:
  76       g_free (window->encoding);
  77       window->encoding = g_value_dup_string (value);
  78       break;
  79     default:
  80       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  81       break;
  82     };
  83 }
  84
  85
  86 static void
  87 psppire_syntax_window_get_property (GObject         *object,
  88                                     guint            prop_id,
  89                                     GValue          *value,
  90                                     GParamSpec      *pspec)
  91 {
  92   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  93
  94   switch (prop_id)
  95     {
  96     case PROP_ENCODING:
  97       g_value_set_string (value, window->encoding);
  98       break;
  99     default:
 100       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 101       break;
 102     };
 103 }
 104
 105 GType
 106 psppire_syntax_window_get_type (void)
 107 {
 108   static GType psppire_syntax_window_type = 0;
 109
 110   if (!psppire_syntax_window_type)
 111     {
 112       static const GTypeInfo psppire_syntax_window_info =
 113       {
 114         sizeof (PsppireSyntaxWindowClass),
 115         (GBaseInitFunc) psppire_syntax_window_base_init,
 116         (GBaseFinalizeFunc) psppire_syntax_window_base_finalize,
 117         (GClassInitFunc)psppire_syntax_window_class_init,
 118         (GClassFinalizeFunc) NULL,
 119         NULL,
 120         sizeof (PsppireSyntaxWindow),
 121         0,
 122         (GInstanceInitFunc) psppire_syntax_window_init,
 123       };
 124
 125       static const GInterfaceInfo window_interface_info =
 126         {
 127           (GInterfaceInitFunc) psppire_syntax_window_iface_init,
 128           NULL,
 129           NULL
 130         };
 131
 132       psppire_syntax_window_type =
 133         g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireSyntaxWindow",
 134                                 &psppire_syntax_window_info, 0);
 135
 136       g_type_add_interface_static (psppire_syntax_window_type,
 137                                    PSPPIRE_TYPE_WINDOW_MODEL,
 138                                    &window_interface_info);
 139     }
 140
 141   return psppire_syntax_window_type;
 142 }
 143
 144 static GObjectClass *parent_class ;
 145
 146 static void
 147 psppire_syntax_window_finalize (GObject *object)
 148 {
 149   if (G_OBJECT_CLASS (parent_class)->finalize)
 150     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
 151 }
 152
 153
 154 static void
 155 psppire_syntax_window_dispose (GObject *obj)
 156 {
 157   PsppireSyntaxWindow *sw = (PsppireSyntaxWindow *)obj;
 158
 159   GtkClipboard *clip_selection;
 160   GtkClipboard *clip_primary;
 161
 162   if (sw->dispose_has_run)
 163     return;
 164
 165   g_free (sw->encoding);
 166   sw->encoding = NULL;
 167
 168   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 169   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
 170
 171   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
 172
 173   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
 174
 175   /* Make sure dispose does not run twice. */
 176   sw->dispose_has_run = TRUE;
 177
 178   /* Chain up to the parent class */
 179   G_OBJECT_CLASS (parent_class)->dispose (obj);
 180 }
 181
 182
 183
 184 static void
 185 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
 186 {
 187   GParamSpec *encoding_spec;
 188   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 189
 190   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
 191
 192   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
 193   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
 194   int n = g_strv_length ((gchar **) existing_paths);
 195
 196   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
 197   new_paths[n] = g_strdup (relocate (PKGDATADIR));
 198   new_paths[n+1] = NULL;
 199
 200   lm = gtk_source_language_manager_new ();
 201   gtk_source_language_manager_set_search_path (lm, new_paths);
 202
 203   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
 204
 205   if (class->lan == NULL)
 206     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
 207
 208   parent_class = g_type_class_peek_parent (class);
 209
 210   g_strfreev (new_paths);
 211
 212   encoding_spec =
 213     null_if_empty_param ("encoding",
 214                          "Character encoding",
 215                          "IANA character encoding in this syntax file",
 216                          NULL,
 217                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 218
 219   parent_class = g_type_class_peek_parent (class);
 220
 221   gobject_class->set_property = psppire_syntax_window_set_property;
 222   gobject_class->get_property = psppire_syntax_window_get_property;
 223   gobject_class->dispose = psppire_syntax_window_dispose;
 224
 225   g_object_class_install_property (gobject_class,
 226                                    PROP_ENCODING,
 227                                    encoding_spec);
 228 }
 229
 230
 231 static void
 232 psppire_syntax_window_base_init (PsppireSyntaxWindowClass *class)
 233 {
 234   GObjectClass *object_class = G_OBJECT_CLASS (class);
 235   object_class->finalize = psppire_syntax_window_finalize;
 236 }
 237
 238
 239
 240 static void
 241 psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *class,
 242                                      gpointer class_data)
 243 {
 244 }
 245
 246
 247 static void
 248 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 249                        GtkTextIter stop)
 250 {
 251   PsppireWindow *win = PSPPIRE_WINDOW (sw);
 252   struct lex_reader *reader = lex_reader_for_gtk_text_buffer (GTK_TEXT_BUFFER (sw->buffer), start, stop);
 253
 254   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
 255
 256   execute_syntax (psppire_default_data_window (), reader);
 257 }
 258 \f
 259 /* Delete the currently selected text */
 260 static void
 261 on_edit_delete (PsppireSyntaxWindow *sw)
 262 {
 263   GtkTextIter begin, end;
 264   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 265
 266   if ( gtk_text_buffer_get_selection_bounds (buffer, &begin, &end) )
 267     gtk_text_buffer_delete (buffer, &begin, &end);
 268 }
 269
 270
 271 /* The syntax editor's clipboard deals only with text */
 272 enum {
 273   SELECT_FMT_NULL,
 274   SELECT_FMT_TEXT,
 275 };
 276
 277
 278 static void
 279 selection_changed (PsppireSyntaxWindow *sw)
 280 {
 281   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
 282
 283   gtk_action_set_sensitive (sw->edit_copy, sel);
 284   gtk_action_set_sensitive (sw->edit_cut, sel);
 285   gtk_action_set_sensitive (sw->edit_delete, sel);
 286 }
 287
 288 /* The callback which runs when something request clipboard data */
 289 static void
 290 clipboard_get_cb (GtkClipboard     *clipboard,
 291                   GtkSelectionData *selection_data,
 292                   guint             info,
 293                   gpointer          data)
 294 {
 295   PsppireSyntaxWindow *sw = data;
 296   g_assert (info == SELECT_FMT_TEXT);
 297
 298   gtk_selection_data_set (selection_data, selection_data->target,
 299                           8,
 300                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
 301
 302 }
 303
 304 static void
 305 clipboard_clear_cb (GtkClipboard *clipboard,
 306                     gpointer data)
 307 {
 308   PsppireSyntaxWindow *sw = data;
 309   g_free (sw->cliptext);
 310   sw->cliptext = NULL;
 311 }
 312
 313
 314 static const GtkTargetEntry targets[] = {
 315   { "UTF8_STRING",   0, SELECT_FMT_TEXT },
 316   { "STRING",        0, SELECT_FMT_TEXT },
 317   { "TEXT",          0, SELECT_FMT_TEXT },
 318   { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
 319   { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
 320   { "text/plain",    0, SELECT_FMT_TEXT },
 321 };
 322
 323
 324 /*
 325   Store a clip containing the currently selected text.
 326   Returns true iff something was set.
 327   As a side effect, begin and end will be set to indicate
 328   the limits of the selected text.
 329 */
 330 static gboolean
 331 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
 332 {
 333   GtkClipboard *clipboard ;
 334   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 335
 336   if ( ! gtk_text_buffer_get_selection_bounds (buffer, begin, end) )
 337     return FALSE;
 338
 339   g_free (sw->cliptext);
 340   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
 341
 342   clipboard =
 343     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 344
 345   if (!gtk_clipboard_set_with_owner (clipboard, targets,
 346                                      G_N_ELEMENTS (targets),
 347                                      clipboard_get_cb, clipboard_clear_cb,
 348                                      G_OBJECT (sw)))
 349     clipboard_clear_cb (clipboard, sw);
 350
 351   return TRUE;
 352 }
 353
 354 static void
 355 on_edit_cut (PsppireSyntaxWindow *sw)
 356 {
 357   GtkTextIter begin, end;
 358
 359   if ( set_clip (sw, &begin, &end))
 360     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
 361 }
 362
 363 static void
 364 on_edit_copy (PsppireSyntaxWindow *sw)
 365 {
 366   GtkTextIter begin, end;
 367
 368   set_clip (sw, &begin, &end);
 369 }
 370
 371
 372 /* A callback for when the clipboard contents have been received */
 373 static void
 374 contents_received_callback (GtkClipboard *clipboard,
 375                             GtkSelectionData *sd,
 376                             gpointer data)
 377 {
 378   gchar *c;
 379   PsppireSyntaxWindow *syntax_window = data;
 380
 381   if ( sd->length < 0 )
 382     return;
 383
 384   if ( sd->type != gdk_atom_intern ("UTF8_STRING", FALSE))
 385     return;
 386
 387   c = (gchar *) sd->data;
 388
 389   gtk_text_buffer_insert_at_cursor (GTK_TEXT_BUFFER (syntax_window->buffer),
 390                                     (gchar *) sd->data,
 391                                     sd->length);
 392
 393 }
 394
 395 static void
 396 on_edit_paste (PsppireSyntaxWindow *sw)
 397 {
 398   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 399   GtkClipboard *clipboard =
 400     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 401
 402   gtk_clipboard_request_contents (clipboard,
 403                                   gdk_atom_intern ("UTF8_STRING", TRUE),
 404                                   contents_received_callback,
 405                                   sw);
 406 }
 407
 408
 409 /* Check to see if CLIP holds a target which we know how to paste,
 410    and set the sensitivity of the Paste action accordingly.
 411  */
 412 static void
 413 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 414 {
 415   gint i;
 416   gboolean compatible_target = FALSE;
 417   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 418
 419   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 420     {
 421       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 422       if ( gtk_clipboard_wait_is_target_available (clip, atom))
 423         {
 424           compatible_target = TRUE;
 425           break;
 426         }
 427     }
 428
 429   gtk_action_set_sensitive (sw->edit_paste, compatible_target);
 430 }
 431
 432
 433 \f
 434
 435 /* Parse and execute all the text in the buffer */
 436 static void
 437 on_run_all (GtkMenuItem *menuitem, gpointer user_data)
 438 {
 439   GtkTextIter begin, end;
 440   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 441
 442   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 443   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 444
 445   editor_execute_syntax (se, begin, end);
 446 }
 447
 448 /* Parse and execute the currently selected text */
 449 static void
 450 on_run_selection (GtkMenuItem *menuitem, gpointer user_data)
 451 {
 452   GtkTextIter begin, end;
 453   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 454
 455   if ( gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end) )
 456     editor_execute_syntax (se, begin, end);
 457 }
 458
 459
 460 /* Parse and execute the from the current line, to the end of the
 461    buffer */
 462 static void
 463 on_run_to_end (GtkMenuItem *menuitem, gpointer user_data)
 464 {
 465   GtkTextIter begin, end;
 466   GtkTextIter here;
 467   gint line;
 468
 469   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 470
 471   /* Get the current line */
 472   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 473                                     &here,
 474                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 475                                     );
 476
 477   line = gtk_text_iter_get_line (&here) ;
 478
 479   /* Now set begin and end to the start of this line, and end of buffer
 480      respectively */
 481   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 482   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 483
 484   editor_execute_syntax (se, begin, end);
 485 }
 486
 487
 488
 489 /* Parse and execute the current line */
 490 static void
 491 on_run_current_line (GtkMenuItem *menuitem, gpointer user_data)
 492 {
 493   GtkTextIter begin, end;
 494   GtkTextIter here;
 495   gint line;
 496
 497   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 498
 499   /* Get the current line */
 500   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 501                                     &here,
 502                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 503                                     );
 504
 505   line = gtk_text_iter_get_line (&here) ;
 506
 507   /* Now set begin and end to the start of this line, and start of
 508      following line respectively */
 509   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 510   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 511
 512   editor_execute_syntax (se, begin, end);
 513 }
 514
 515
 516
 517 /* Append ".sps" to FILENAME if necessary.
 518    The returned result must be freed when no longer required.
 519  */
 520 static gchar *
 521 append_suffix (const gchar *filename)
 522 {
 523   if ( ! g_str_has_suffix (filename, ".sps" ) &&
 524        ! g_str_has_suffix (filename, ".SPS" ) )
 525     {
 526       return g_strdup_printf ("%s.sps", filename);
 527     }
 528
 529   return xstrdup (filename);
 530 }
 531
 532 /*
 533   Save BUFFER to the file called FILENAME.
 534   FILENAME must be encoded in Glib filename encoding.
 535   If successful, clears the buffer's modified flag.
 536 */
 537 static gboolean
 538 save_editor_to_file (PsppireSyntaxWindow *se,
 539                      const gchar *filename,
 540                      GError **err)
 541 {
 542   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 543   struct substring text_locale;
 544   gboolean result ;
 545   GtkTextIter start, stop;
 546   gchar *text;
 547
 548   gchar *suffixedname;
 549   g_assert (filename);
 550
 551   suffixedname = append_suffix (filename);
 552
 553   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 554   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 555
 556   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 557
 558   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 559                                        NULL);
 560
 561   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 562                                  ss_length (text_locale), err);
 563
 564   ss_dealloc (&text_locale);
 565   g_free (suffixedname);
 566
 567   if ( result )
 568     {
 569       char *fn = g_filename_display_name (filename);
 570       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 571       g_free (fn);
 572       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 573       gtk_text_buffer_set_modified (buffer, FALSE);
 574       g_free (msg);
 575     }
 576
 577   return result;
 578 }
 579
 580
 581 /* PsppireWindow 'pick_Filename' callback. */
 582 static void
 583 syntax_pick_filename (PsppireWindow *window)
 584 {
 585   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 586   const char *default_encoding;
 587   GtkFileFilter *filter;
 588   gint response;
 589
 590   GtkWidget *dialog =
 591     gtk_file_chooser_dialog_new (_("Save Syntax"),
 592                                  GTK_WINDOW (se),
 593                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 594                                  GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 595                                  GTK_STOCK_SAVE,   GTK_RESPONSE_ACCEPT,
 596                                  NULL);
 597
 598   g_object_set (dialog, "local-only", FALSE, NULL);
 599
 600   filter = gtk_file_filter_new ();
 601   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 602   gtk_file_filter_add_pattern (filter, "*.sps");
 603   gtk_file_filter_add_pattern (filter, "*.SPS");
 604   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 605
 606   filter = gtk_file_filter_new ();
 607   gtk_file_filter_set_name (filter, _("All Files"));
 608   gtk_file_filter_add_pattern (filter, "*");
 609   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 610
 611   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 612                                                   TRUE);
 613
 614   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 615   gtk_file_chooser_set_extra_widget (
 616     GTK_FILE_CHOOSER (dialog),
 617     psppire_encoding_selector_new (default_encoding, false));
 618
 619   response = gtk_dialog_run (GTK_DIALOG (dialog));
 620
 621   if ( response == GTK_RESPONSE_ACCEPT )
 622     {
 623       gchar *encoding;
 624       char *filename;
 625
 626       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog) );
 627       psppire_window_set_filename (window, filename);
 628       free (filename);
 629
 630       encoding = psppire_encoding_selector_get_encoding (
 631         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 632       if (encoding != NULL)
 633         {
 634           g_free (se->encoding);
 635           se->encoding = encoding;
 636         }
 637     }
 638
 639   gtk_widget_destroy (dialog);
 640 }
 641
 642
 643 /* PsppireWindow 'save' callback. */
 644 static void
 645 syntax_save (PsppireWindow *se)
 646 {
 647   const gchar *filename = psppire_window_get_filename (se);
 648   GError *err = NULL;
 649   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 650   if ( err )
 651     {
 652       msg (ME, "%s", err->message);
 653       g_error_free (err);
 654     }
 655 }
 656
 657
 658 /* Callback for the File->Quit menuitem */
 659 static gboolean
 660 on_quit (GtkMenuItem *menuitem, gpointer    user_data)
 661 {
 662   psppire_quit ();
 663
 664   return FALSE;
 665 }
 666
 667
 668 static void
 669 load_and_show_syntax_window (GtkWidget *se, const gchar *filename)
 670 {
 671   gboolean ok;
 672
 673   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 674   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename);
 675   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 676
 677   if (ok )
 678     gtk_widget_show (se);
 679   else
 680     gtk_widget_destroy (se);
 681 }
 682
 683 void
 684 create_syntax_window (void)
 685 {
 686   GtkWidget *w = psppire_syntax_window_new (NULL);
 687   gtk_widget_show (w);
 688 }
 689
 690 void
 691 open_syntax_window (const char *file_name, const gchar *encoding)
 692 {
 693   GtkWidget *se = psppire_syntax_window_new (encoding);
 694
 695   if ( file_name)
 696     load_and_show_syntax_window (se, file_name);
 697 }
 698
 699
 700
 701 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 702
 703 static void
 704 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 705 {
 706   if (gtk_text_buffer_get_modified (buffer))
 707     psppire_window_set_unsaved (window);
 708 }
 709
 710 static void undo_redo_update (PsppireSyntaxWindow *window);
 711 static void undo_last_edit (PsppireSyntaxWindow *window);
 712 static void redo_last_edit (PsppireSyntaxWindow *window);
 713
 714 static void
 715 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 716 {
 717   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 718   undo_redo_update (window);
 719 }
 720
 721 static void
 722 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 723 {
 724   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 725   GtkWidget *box = gtk_vbox_new (FALSE, 0);
 726
 727   GtkWidget *menubar = get_widget_assert (xml, "menubar");
 728   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 729
 730   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 731
 732   PsppireSyntaxWindowClass *class
 733     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 734
 735   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 736   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 737
 738   window->print_settings = NULL;
 739   window->undo_menuitem = get_action_assert (xml, "edit_undo");
 740   window->redo_menuitem = get_action_assert (xml, "edit_redo");
 741
 742   if (class->lan)
 743     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 744   else
 745     window->buffer = gtk_source_buffer_new (NULL);
 746
 747   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 748
 749   g_object_set (window->buffer,
 750                 "highlight-matching-brackets", TRUE,
 751                 NULL);
 752
 753   g_object_set (text_view,
 754                 "show-line-numbers", TRUE,
 755                 "show-line-marks", TRUE,
 756                 "auto-indent", TRUE,
 757                 "indent-width", 4,
 758                 "highlight-current-line", TRUE,
 759                 NULL);
 760
 761   window->encoding = NULL;
 762
 763   window->cliptext = NULL;
 764   window->dispose_has_run = FALSE;
 765
 766   window->edit_delete = get_action_assert (xml, "edit_delete");
 767   window->edit_copy = get_action_assert (xml, "edit_copy");
 768   window->edit_cut = get_action_assert (xml, "edit_cut");
 769   window->edit_paste = get_action_assert (xml, "edit_paste");
 770
 771   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
 772
 773   window->sb = get_widget_assert (xml, "statusbar2");
 774   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
 775
 776   g_signal_connect (window->buffer, "changed",
 777                     G_CALLBACK (on_text_changed), window);
 778
 779   g_signal_connect (window->buffer, "modified-changed",
 780                     G_CALLBACK (on_modified_changed), window);
 781
 782   g_signal_connect_swapped (get_action_assert (xml, "file_print"), "activate",
 783                             G_CALLBACK (psppire_syntax_window_print), window);
 784
 785
 786   g_signal_connect_swapped (window->undo_menuitem,
 787                             "activate",
 788                             G_CALLBACK (undo_last_edit),
 789                             window);
 790
 791   g_signal_connect_swapped (window->redo_menuitem,
 792                             "activate",
 793                             G_CALLBACK (redo_last_edit),
 794                             window);
 795
 796   undo_redo_update (window);
 797
 798   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 799                                                    G_CALLBACK (selection_changed), window);
 800
 801   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 802                                           G_CALLBACK (set_paste_sensitivity), window);
 803
 804   connect_help (xml);
 805
 806   gtk_container_add (GTK_CONTAINER (window), box);
 807
 808   g_object_ref (menubar);
 809
 810   g_object_ref (sw);
 811
 812   g_object_ref (window->sb);
 813
 814   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 815   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 816   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 817
 818   gtk_widget_show_all (box);
 819
 820   g_signal_connect_swapped (get_action_assert (xml,"file_new_syntax"), "activate", G_CALLBACK (create_syntax_window), NULL);
 821
 822   g_signal_connect (get_action_assert (xml,"file_new_data"),
 823                     "activate",
 824                     G_CALLBACK (create_data_window),
 825                     window);
 826
 827   g_signal_connect_swapped (get_action_assert (xml, "file_open"),
 828                     "activate",
 829                     G_CALLBACK (psppire_window_open),
 830                     window);
 831
 832   g_signal_connect_swapped (get_action_assert (xml, "file_save"),
 833                     "activate",
 834                     G_CALLBACK (psppire_window_save),
 835                     window);
 836
 837   g_signal_connect_swapped (get_action_assert (xml, "file_save_as"),
 838                     "activate",
 839                     G_CALLBACK (psppire_window_save_as),
 840                     window);
 841
 842   g_signal_connect (get_action_assert (xml,"file_quit"),
 843                     "activate",
 844                     G_CALLBACK (on_quit),
 845                     window);
 846
 847   g_signal_connect_swapped (window->edit_delete,
 848                     "activate",
 849                     G_CALLBACK (on_edit_delete),
 850                     window);
 851
 852   g_signal_connect_swapped (window->edit_copy,
 853                     "activate",
 854                     G_CALLBACK (on_edit_copy),
 855                     window);
 856
 857   g_signal_connect_swapped (window->edit_cut,
 858                     "activate",
 859                     G_CALLBACK (on_edit_cut),
 860                     window);
 861
 862   g_signal_connect_swapped (window->edit_paste,
 863                     "activate",
 864                     G_CALLBACK (on_edit_paste),
 865                     window);
 866
 867   g_signal_connect (get_action_assert (xml,"run_all"),
 868                     "activate",
 869                     G_CALLBACK (on_run_all),
 870                     window);
 871
 872   g_signal_connect (get_action_assert (xml,"run_selection"),
 873                     "activate",
 874                     G_CALLBACK (on_run_selection),
 875                     window);
 876
 877   g_signal_connect (get_action_assert (xml,"run_current_line"),
 878                     "activate",
 879                     G_CALLBACK (on_run_current_line),
 880                     window);
 881
 882   g_signal_connect (get_action_assert (xml,"run_to_end"),
 883                     "activate",
 884                     G_CALLBACK (on_run_to_end),
 885                     window);
 886
 887   g_signal_connect (get_action_assert (xml,"windows_minimise_all"),
 888                     "activate",
 889                     G_CALLBACK (psppire_window_minimise_all), NULL);
 890
 891
 892
 893
 894
 895   {
 896   GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
 897
 898   merge_help_menu (uim);
 899
 900   PSPPIRE_WINDOW (window)->menu =
 901     GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
 902   }
 903
 904   g_object_unref (xml);
 905 }
 906
 907
 908
 909
 910
 911 GtkWidget*
 912 psppire_syntax_window_new (const char *encoding)
 913 {
 914   return GTK_WIDGET (g_object_new (psppire_syntax_window_get_type (),
 915                                    "description", _("Syntax Editor"),
 916                                    "encoding", encoding,
 917                                    NULL));
 918 }
 919
 920 static void
 921 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
 922 {
 923   gchar *fn = g_filename_display_basename (filename);
 924
 925   GtkWidget *dialog =
 926     gtk_message_dialog_new (w,
 927                             GTK_DIALOG_DESTROY_WITH_PARENT,
 928                             GTK_MESSAGE_ERROR,
 929                             GTK_BUTTONS_CLOSE,
 930                             _("Cannot load syntax file `%s'"),
 931                             fn);
 932
 933   g_free (fn);
 934
 935   g_object_set (dialog, "icon-name", "pspp", NULL);
 936
 937   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 938                                             "%s", err->message);
 939
 940   gtk_dialog_run (GTK_DIALOG (dialog));
 941
 942   gtk_widget_destroy (dialog);
 943 }
 944
 945 /*
 946   Loads the buffer from the file called FILENAME
 947 */
 948 gboolean
 949 syntax_load (PsppireWindow *window, const gchar *filename)
 950 {
 951   GError *err = NULL;
 952   gchar *text_locale = NULL;
 953   gchar *text_utf8 = NULL;
 954   gsize len_locale = -1;
 955   gsize len_utf8 = -1;
 956   GtkTextIter iter;
 957   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
 958   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 959   gchar *encoding;
 960   char *mime_type;
 961
 962   /* FIXME: What if it's a very big file ? */
 963   if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
 964     {
 965       error_dialog (GTK_WINDOW (window), filename, err);
 966       g_clear_error (&err);
 967       return FALSE;
 968     }
 969
 970   /* Determine the file's encoding and update sw->encoding.  (The ordering is
 971      important here because encoding_guess_whole_file() often returns its
 972      argument instead of a copy of it.) */
 973   encoding = g_strdup (encoding_guess_whole_file (sw->encoding, text_locale,
 974                                                   len_locale));
 975   g_free (sw->encoding);
 976   sw->encoding = encoding;
 977
 978   text_utf8 = recode_substring_pool ("UTF-8", encoding,
 979                                      ss_buffer (text_locale, len_locale),
 980                                      NULL).string;
 981   free (text_locale);
 982
 983   if ( text_utf8 == NULL )
 984     {
 985       error_dialog (GTK_WINDOW (window), filename, err);
 986       g_clear_error (&err);
 987       return FALSE;
 988     }
 989
 990   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
 991
 992   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
 993
 994   gtk_text_buffer_set_modified (buffer, FALSE);
 995
 996   free (text_utf8);
 997
 998   mime_type = xasprintf ("text/x-spss-syntax; charset=%s", sw->encoding);
 999   add_most_recent (filename, mime_type);
1000   free (mime_type);
1001
1002   return TRUE;
1003 }
1004
1005 \f
1006
1007 static void
1008 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1009 {
1010   iface->save = syntax_save;
1011   iface->pick_filename = syntax_pick_filename;
1012   iface->load = syntax_load;
1013 }
1014
1015
1016 \f
1017
1018 static void
1019 undo_redo_update (PsppireSyntaxWindow *window)
1020 {
1021   gtk_action_set_sensitive (window->undo_menuitem,
1022                             gtk_source_buffer_can_undo (window->buffer));
1023
1024   gtk_action_set_sensitive (window->redo_menuitem,
1025                             gtk_source_buffer_can_redo (window->buffer));
1026 }
1027
1028 static void
1029 undo_last_edit (PsppireSyntaxWindow *window)
1030 {
1031   gtk_source_buffer_undo (window->buffer);
1032   undo_redo_update (window);
1033 }
1034
1035 static void
1036 redo_last_edit (PsppireSyntaxWindow *window)
1037 {
1038   gtk_source_buffer_redo (window->buffer);
1039   undo_redo_update (window);
1040 }
1041
1042
1043 \f
1044 /* Printing related stuff */
1045
1046
1047 static void
1048 begin_print (GtkPrintOperation *operation,
1049           GtkPrintContext   *context,
1050           PsppireSyntaxWindow *window)
1051 {
1052   window->compositor =
1053     gtk_source_print_compositor_new (window->buffer);
1054 }
1055
1056
1057 static void
1058 end_print (GtkPrintOperation *operation,
1059           GtkPrintContext   *context,
1060           PsppireSyntaxWindow *window)
1061 {
1062   g_object_unref (window->compositor);
1063   window->compositor = NULL;
1064 }
1065
1066
1067
1068 static gboolean
1069 paginate (GtkPrintOperation *operation,
1070           GtkPrintContext   *context,
1071           PsppireSyntaxWindow *window)
1072 {
1073   if (gtk_source_print_compositor_paginate (window->compositor, context))
1074     {
1075       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1076       gtk_print_operation_set_n_pages (operation, n_pages);
1077
1078       return TRUE;
1079     }
1080
1081   return FALSE;
1082 }
1083
1084 static void
1085 draw_page (GtkPrintOperation *operation,
1086            GtkPrintContext   *context,
1087            gint               page_nr,
1088           PsppireSyntaxWindow *window)
1089 {
1090   gtk_source_print_compositor_draw_page (window->compositor,
1091                                          context,
1092                                          page_nr);
1093 }
1094
1095
1096
1097 static void
1098 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1099 {
1100   GtkPrintOperationResult res;
1101
1102   GtkPrintOperation *print = gtk_print_operation_new ();
1103
1104   if (window->print_settings != NULL)
1105     gtk_print_operation_set_print_settings (print, window->print_settings);
1106
1107
1108   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1109   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1110   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1111   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1112
1113   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1114                                  GTK_WINDOW (window), NULL);
1115
1116   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1117     {
1118       if (window->print_settings != NULL)
1119         g_object_unref (window->print_settings);
1120       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1121     }
1122
1123   g_object_unref (print);
1124 }