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

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2008, 2009, 2010, 2011, 2012  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/builder-wrapper.h"
  35 #include "ui/gui/psppire-data-window.h"
  36 #include "ui/gui/psppire-encoding-selector.h"
  37 #include "ui/gui/psppire-lex-reader.h"
  38 #include "ui/gui/psppire-syntax-window.h"
  39 #include "ui/gui/psppire-window-register.h"
  40 #include "ui/gui/psppire.h"
  41
  42 #include "gl/localcharset.h"
  43 #include "gl/xalloc.h"
  44 #include "gl/xvasprintf.h"
  45
  46 #include <gettext.h>
  47 #define _(msgid) gettext (msgid)
  48 #define N_(msgid) msgid
  49
  50 static void psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *, gpointer);
  51 static void psppire_syntax_window_base_init     (PsppireSyntaxWindowClass *class);
  52 static void psppire_syntax_window_class_init    (PsppireSyntaxWindowClass *class);
  53 static void psppire_syntax_window_init          (PsppireSyntaxWindow      *syntax_editor);
  54
  55
  56 static void psppire_syntax_window_iface_init (PsppireWindowIface *iface);
  57
  58
  59 /* Properties */
  60 enum
  61 {
  62   PROP_0,
  63   PROP_ENCODING
  64 };
  65
  66 static void
  67 psppire_syntax_window_set_property (GObject         *object,
  68                                     guint            prop_id,
  69                                     const GValue    *value,
  70                                     GParamSpec      *pspec)
  71 {
  72   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  73
  74   switch (prop_id)
  75     {
  76     case PROP_ENCODING:
  77       g_free (window->encoding);
  78       window->encoding = g_value_dup_string (value);
  79       break;
  80     default:
  81       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  82       break;
  83     };
  84 }
  85
  86
  87 static void
  88 psppire_syntax_window_get_property (GObject         *object,
  89                                     guint            prop_id,
  90                                     GValue          *value,
  91                                     GParamSpec      *pspec)
  92 {
  93   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  94
  95   switch (prop_id)
  96     {
  97     case PROP_ENCODING:
  98       g_value_set_string (value, window->encoding);
  99       break;
 100     default:
 101       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 102       break;
 103     };
 104 }
 105
 106 GType
 107 psppire_syntax_window_get_type (void)
 108 {
 109   static GType psppire_syntax_window_type = 0;
 110
 111   if (!psppire_syntax_window_type)
 112     {
 113       static const GTypeInfo psppire_syntax_window_info =
 114       {
 115         sizeof (PsppireSyntaxWindowClass),
 116         (GBaseInitFunc) psppire_syntax_window_base_init,
 117         (GBaseFinalizeFunc) psppire_syntax_window_base_finalize,
 118         (GClassInitFunc)psppire_syntax_window_class_init,
 119         (GClassFinalizeFunc) NULL,
 120         NULL,
 121         sizeof (PsppireSyntaxWindow),
 122         0,
 123         (GInstanceInitFunc) psppire_syntax_window_init,
 124       };
 125
 126       static const GInterfaceInfo window_interface_info =
 127         {
 128           (GInterfaceInitFunc) psppire_syntax_window_iface_init,
 129           NULL,
 130           NULL
 131         };
 132
 133       psppire_syntax_window_type =
 134         g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireSyntaxWindow",
 135                                 &psppire_syntax_window_info, 0);
 136
 137       g_type_add_interface_static (psppire_syntax_window_type,
 138                                    PSPPIRE_TYPE_WINDOW_MODEL,
 139                                    &window_interface_info);
 140     }
 141
 142   return psppire_syntax_window_type;
 143 }
 144
 145 static GObjectClass *parent_class ;
 146
 147 static void
 148 psppire_syntax_window_finalize (GObject *object)
 149 {
 150   if (G_OBJECT_CLASS (parent_class)->finalize)
 151     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
 152 }
 153
 154
 155 static void
 156 psppire_syntax_window_dispose (GObject *obj)
 157 {
 158   PsppireSyntaxWindow *sw = (PsppireSyntaxWindow *)obj;
 159
 160   GtkClipboard *clip_selection;
 161   GtkClipboard *clip_primary;
 162
 163   if (sw->dispose_has_run)
 164     return;
 165
 166   g_free (sw->encoding);
 167   sw->encoding = NULL;
 168
 169   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 170   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
 171
 172   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
 173
 174   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
 175
 176   /* Make sure dispose does not run twice. */
 177   sw->dispose_has_run = TRUE;
 178
 179   /* Chain up to the parent class */
 180   G_OBJECT_CLASS (parent_class)->dispose (obj);
 181 }
 182
 183
 184
 185 static void
 186 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
 187 {
 188   GParamSpec *encoding_spec;
 189   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 190
 191   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
 192
 193   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
 194   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
 195   int n = g_strv_length ((gchar **) existing_paths);
 196
 197   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
 198   new_paths[n] = g_strdup (relocate (PKGDATADIR));
 199   new_paths[n+1] = NULL;
 200
 201   lm = gtk_source_language_manager_new ();
 202   gtk_source_language_manager_set_search_path (lm, new_paths);
 203
 204   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
 205
 206   if (class->lan == NULL)
 207     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
 208
 209   parent_class = g_type_class_peek_parent (class);
 210
 211   g_strfreev (new_paths);
 212
 213   encoding_spec =
 214     null_if_empty_param ("encoding",
 215                          "Character encoding",
 216                          "IANA character encoding in this syntax file",
 217                          NULL,
 218                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 219
 220   parent_class = g_type_class_peek_parent (class);
 221
 222   gobject_class->set_property = psppire_syntax_window_set_property;
 223   gobject_class->get_property = psppire_syntax_window_get_property;
 224   gobject_class->dispose = psppire_syntax_window_dispose;
 225
 226   g_object_class_install_property (gobject_class,
 227                                    PROP_ENCODING,
 228                                    encoding_spec);
 229 }
 230
 231
 232 static void
 233 psppire_syntax_window_base_init (PsppireSyntaxWindowClass *class)
 234 {
 235   GObjectClass *object_class = G_OBJECT_CLASS (class);
 236   object_class->finalize = psppire_syntax_window_finalize;
 237 }
 238
 239
 240
 241 static void
 242 psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *class,
 243                                      gpointer class_data)
 244 {
 245 }
 246
 247
 248 static void
 249 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 250                        GtkTextIter stop)
 251 {
 252   PsppireWindow *win = PSPPIRE_WINDOW (sw);
 253   struct lex_reader *reader = lex_reader_for_gtk_text_buffer (GTK_TEXT_BUFFER (sw->buffer), start, stop);
 254
 255   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
 256
 257   execute_syntax (psppire_default_data_window (), reader);
 258 }
 259 \f
 260 /* Delete the currently selected text */
 261 static void
 262 on_edit_delete (PsppireSyntaxWindow *sw)
 263 {
 264   GtkTextIter begin, end;
 265   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 266
 267   if ( gtk_text_buffer_get_selection_bounds (buffer, &begin, &end) )
 268     gtk_text_buffer_delete (buffer, &begin, &end);
 269 }
 270
 271
 272 /* The syntax editor's clipboard deals only with text */
 273 enum {
 274   SELECT_FMT_NULL,
 275   SELECT_FMT_TEXT,
 276 };
 277
 278
 279 static void
 280 selection_changed (PsppireSyntaxWindow *sw)
 281 {
 282   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
 283
 284   gtk_action_set_sensitive (sw->edit_copy, sel);
 285   gtk_action_set_sensitive (sw->edit_cut, sel);
 286   gtk_action_set_sensitive (sw->edit_delete, sel);
 287 }
 288
 289 /* The callback which runs when something request clipboard data */
 290 static void
 291 clipboard_get_cb (GtkClipboard     *clipboard,
 292                   GtkSelectionData *selection_data,
 293                   guint             info,
 294                   gpointer          data)
 295 {
 296   PsppireSyntaxWindow *sw = data;
 297   g_assert (info == SELECT_FMT_TEXT);
 298
 299   gtk_selection_data_set (selection_data, selection_data->target,
 300                           8,
 301                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
 302
 303 }
 304
 305 static void
 306 clipboard_clear_cb (GtkClipboard *clipboard,
 307                     gpointer data)
 308 {
 309   PsppireSyntaxWindow *sw = data;
 310   g_free (sw->cliptext);
 311   sw->cliptext = NULL;
 312 }
 313
 314
 315 static const GtkTargetEntry targets[] = {
 316   { "UTF8_STRING",   0, SELECT_FMT_TEXT },
 317   { "STRING",        0, SELECT_FMT_TEXT },
 318   { "TEXT",          0, SELECT_FMT_TEXT },
 319   { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
 320   { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
 321   { "text/plain",    0, SELECT_FMT_TEXT },
 322 };
 323
 324
 325 /*
 326   Store a clip containing the currently selected text.
 327   Returns true iff something was set.
 328   As a side effect, begin and end will be set to indicate
 329   the limits of the selected text.
 330 */
 331 static gboolean
 332 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
 333 {
 334   GtkClipboard *clipboard ;
 335   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 336
 337   if ( ! gtk_text_buffer_get_selection_bounds (buffer, begin, end) )
 338     return FALSE;
 339
 340   g_free (sw->cliptext);
 341   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
 342
 343   clipboard =
 344     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 345
 346   if (!gtk_clipboard_set_with_owner (clipboard, targets,
 347                                      G_N_ELEMENTS (targets),
 348                                      clipboard_get_cb, clipboard_clear_cb,
 349                                      G_OBJECT (sw)))
 350     clipboard_clear_cb (clipboard, sw);
 351
 352   return TRUE;
 353 }
 354
 355 static void
 356 on_edit_cut (PsppireSyntaxWindow *sw)
 357 {
 358   GtkTextIter begin, end;
 359
 360   if ( set_clip (sw, &begin, &end))
 361     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
 362 }
 363
 364 static void
 365 on_edit_copy (PsppireSyntaxWindow *sw)
 366 {
 367   GtkTextIter begin, end;
 368
 369   set_clip (sw, &begin, &end);
 370 }
 371
 372
 373 /* A callback for when the clipboard contents have been received */
 374 static void
 375 contents_received_callback (GtkClipboard *clipboard,
 376                             GtkSelectionData *sd,
 377                             gpointer data)
 378 {
 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   gtk_text_buffer_insert_at_cursor (GTK_TEXT_BUFFER (syntax_window->buffer),
 388                                     (gchar *) sd->data,
 389                                     sd->length);
 390
 391 }
 392
 393 static void
 394 on_edit_paste (PsppireSyntaxWindow *sw)
 395 {
 396   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 397   GtkClipboard *clipboard =
 398     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 399
 400   gtk_clipboard_request_contents (clipboard,
 401                                   gdk_atom_intern ("UTF8_STRING", TRUE),
 402                                   contents_received_callback,
 403                                   sw);
 404 }
 405
 406
 407 /* Check to see if CLIP holds a target which we know how to paste,
 408    and set the sensitivity of the Paste action accordingly.
 409  */
 410 static void
 411 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 412 {
 413   gint i;
 414   gboolean compatible_target = FALSE;
 415   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 416
 417   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 418     {
 419       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 420       if ( gtk_clipboard_wait_is_target_available (clip, atom))
 421         {
 422           compatible_target = TRUE;
 423           break;
 424         }
 425     }
 426
 427   gtk_action_set_sensitive (sw->edit_paste, compatible_target);
 428 }
 429
 430
 431 \f
 432
 433 /* Parse and execute all the text in the buffer */
 434 static void
 435 on_run_all (GtkMenuItem *menuitem, gpointer user_data)
 436 {
 437   GtkTextIter begin, end;
 438   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 439
 440   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 441   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 442
 443   editor_execute_syntax (se, begin, end);
 444 }
 445
 446 /* Parse and execute the currently selected text */
 447 static void
 448 on_run_selection (GtkMenuItem *menuitem, gpointer user_data)
 449 {
 450   GtkTextIter begin, end;
 451   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 452
 453   if ( gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end) )
 454     editor_execute_syntax (se, begin, end);
 455 }
 456
 457
 458 /* Parse and execute the from the current line, to the end of the
 459    buffer */
 460 static void
 461 on_run_to_end (GtkMenuItem *menuitem, gpointer user_data)
 462 {
 463   GtkTextIter begin, end;
 464   GtkTextIter here;
 465   gint line;
 466
 467   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 468
 469   /* Get the current line */
 470   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 471                                     &here,
 472                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 473                                     );
 474
 475   line = gtk_text_iter_get_line (&here) ;
 476
 477   /* Now set begin and end to the start of this line, and end of buffer
 478      respectively */
 479   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 480   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 481
 482   editor_execute_syntax (se, begin, end);
 483 }
 484
 485
 486
 487 /* Parse and execute the current line */
 488 static void
 489 on_run_current_line (GtkMenuItem *menuitem, gpointer user_data)
 490 {
 491   GtkTextIter begin, end;
 492   GtkTextIter here;
 493   gint line;
 494
 495   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 496
 497   /* Get the current line */
 498   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 499                                     &here,
 500                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 501                                     );
 502
 503   line = gtk_text_iter_get_line (&here) ;
 504
 505   /* Now set begin and end to the start of this line, and start of
 506      following line respectively */
 507   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 508   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 509
 510   editor_execute_syntax (se, begin, end);
 511 }
 512
 513
 514
 515 /* Append ".sps" to FILENAME if necessary.
 516    The returned result must be freed when no longer required.
 517  */
 518 static gchar *
 519 append_suffix (const gchar *filename)
 520 {
 521   if ( ! g_str_has_suffix (filename, ".sps" ) &&
 522        ! g_str_has_suffix (filename, ".SPS" ) )
 523     {
 524       return g_strdup_printf ("%s.sps", filename);
 525     }
 526
 527   return xstrdup (filename);
 528 }
 529
 530 /*
 531   Save BUFFER to the file called FILENAME.
 532   FILENAME must be encoded in Glib filename encoding.
 533   If successful, clears the buffer's modified flag.
 534 */
 535 static gboolean
 536 save_editor_to_file (PsppireSyntaxWindow *se,
 537                      const gchar *filename,
 538                      GError **err)
 539 {
 540   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 541   struct substring text_locale;
 542   gboolean result ;
 543   GtkTextIter start, stop;
 544   gchar *text;
 545
 546   gchar *suffixedname;
 547   g_assert (filename);
 548
 549   suffixedname = append_suffix (filename);
 550
 551   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 552   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 553
 554   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 555
 556   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 557                                        NULL);
 558
 559   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 560                                  ss_length (text_locale), err);
 561
 562   ss_dealloc (&text_locale);
 563   g_free (suffixedname);
 564
 565   if ( result )
 566     {
 567       char *fn = g_filename_display_name (filename);
 568       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 569       g_free (fn);
 570       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 571       gtk_text_buffer_set_modified (buffer, FALSE);
 572       g_free (msg);
 573     }
 574
 575   return result;
 576 }
 577
 578
 579 /* PsppireWindow 'pick_Filename' callback. */
 580 static void
 581 syntax_pick_filename (PsppireWindow *window)
 582 {
 583   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 584   const char *default_encoding;
 585   GtkFileFilter *filter;
 586   gint response;
 587
 588   GtkWidget *dialog =
 589     gtk_file_chooser_dialog_new (_("Save Syntax"),
 590                                  GTK_WINDOW (se),
 591                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 592                                  GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 593                                  GTK_STOCK_SAVE,   GTK_RESPONSE_ACCEPT,
 594                                  NULL);
 595
 596   g_object_set (dialog, "local-only", FALSE, NULL);
 597
 598   filter = gtk_file_filter_new ();
 599   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 600   gtk_file_filter_add_pattern (filter, "*.sps");
 601   gtk_file_filter_add_pattern (filter, "*.SPS");
 602   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 603
 604   filter = gtk_file_filter_new ();
 605   gtk_file_filter_set_name (filter, _("All Files"));
 606   gtk_file_filter_add_pattern (filter, "*");
 607   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 608
 609   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 610                                                   TRUE);
 611
 612   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 613   gtk_file_chooser_set_extra_widget (
 614     GTK_FILE_CHOOSER (dialog),
 615     psppire_encoding_selector_new (default_encoding, false));
 616
 617   response = gtk_dialog_run (GTK_DIALOG (dialog));
 618
 619   if ( response == GTK_RESPONSE_ACCEPT )
 620     {
 621       gchar *encoding;
 622       char *filename;
 623
 624       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog) );
 625       psppire_window_set_filename (window, filename);
 626       free (filename);
 627
 628       encoding = psppire_encoding_selector_get_encoding (
 629         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 630       if (encoding != NULL)
 631         {
 632           g_free (se->encoding);
 633           se->encoding = encoding;
 634         }
 635     }
 636
 637   gtk_widget_destroy (dialog);
 638 }
 639
 640
 641 /* PsppireWindow 'save' callback. */
 642 static void
 643 syntax_save (PsppireWindow *se)
 644 {
 645   const gchar *filename = psppire_window_get_filename (se);
 646   GError *err = NULL;
 647   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 648   if ( err )
 649     {
 650       msg (ME, "%s", err->message);
 651       g_error_free (err);
 652     }
 653 }
 654
 655
 656 /* Callback for the File->Quit menuitem */
 657 static gboolean
 658 on_quit (GtkMenuItem *menuitem, gpointer    user_data)
 659 {
 660   psppire_quit ();
 661
 662   return FALSE;
 663 }
 664
 665
 666 static void
 667 load_and_show_syntax_window (GtkWidget *se, const gchar *filename)
 668 {
 669   gboolean ok;
 670
 671   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 672   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename);
 673   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 674
 675   if (ok )
 676     gtk_widget_show (se);
 677   else
 678     gtk_widget_destroy (se);
 679 }
 680
 681 void
 682 create_syntax_window (void)
 683 {
 684   GtkWidget *w = psppire_syntax_window_new (NULL);
 685   gtk_widget_show (w);
 686 }
 687
 688 void
 689 open_syntax_window (const char *file_name, const gchar *encoding)
 690 {
 691   GtkWidget *se = psppire_syntax_window_new (encoding);
 692
 693   if ( file_name)
 694     load_and_show_syntax_window (se, file_name);
 695 }
 696
 697
 698
 699 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 700
 701 static void
 702 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 703 {
 704   if (gtk_text_buffer_get_modified (buffer))
 705     psppire_window_set_unsaved (window);
 706 }
 707
 708 static void undo_redo_update (PsppireSyntaxWindow *window);
 709 static void undo_last_edit (PsppireSyntaxWindow *window);
 710 static void redo_last_edit (PsppireSyntaxWindow *window);
 711
 712 static void
 713 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 714 {
 715   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 716   undo_redo_update (window);
 717 }
 718
 719 static void
 720 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 721 {
 722   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 723   GtkWidget *box = gtk_vbox_new (FALSE, 0);
 724
 725   GtkWidget *menubar = get_widget_assert (xml, "menubar");
 726   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 727
 728   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 729
 730   PsppireSyntaxWindowClass *class
 731     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 732
 733   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 734   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 735
 736   window->print_settings = NULL;
 737   window->undo_menuitem = get_action_assert (xml, "edit_undo");
 738   window->redo_menuitem = get_action_assert (xml, "edit_redo");
 739
 740   if (class->lan)
 741     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 742   else
 743     window->buffer = gtk_source_buffer_new (NULL);
 744
 745   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 746
 747   g_object_set (window->buffer,
 748                 "highlight-matching-brackets", TRUE,
 749                 NULL);
 750
 751   g_object_set (text_view,
 752                 "show-line-numbers", TRUE,
 753                 "show-line-marks", TRUE,
 754                 "auto-indent", TRUE,
 755                 "indent-width", 4,
 756                 "highlight-current-line", TRUE,
 757                 NULL);
 758
 759   window->encoding = NULL;
 760
 761   window->cliptext = NULL;
 762   window->dispose_has_run = FALSE;
 763
 764   window->edit_delete = get_action_assert (xml, "edit_delete");
 765   window->edit_copy = get_action_assert (xml, "edit_copy");
 766   window->edit_cut = get_action_assert (xml, "edit_cut");
 767   window->edit_paste = get_action_assert (xml, "edit_paste");
 768
 769   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
 770
 771   window->sb = get_widget_assert (xml, "statusbar2");
 772   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
 773
 774   g_signal_connect (window->buffer, "changed",
 775                     G_CALLBACK (on_text_changed), window);
 776
 777   g_signal_connect (window->buffer, "modified-changed",
 778                     G_CALLBACK (on_modified_changed), window);
 779
 780   g_signal_connect_swapped (get_action_assert (xml, "file_print"), "activate",
 781                             G_CALLBACK (psppire_syntax_window_print), window);
 782
 783
 784   g_signal_connect_swapped (window->undo_menuitem,
 785                             "activate",
 786                             G_CALLBACK (undo_last_edit),
 787                             window);
 788
 789   g_signal_connect_swapped (window->redo_menuitem,
 790                             "activate",
 791                             G_CALLBACK (redo_last_edit),
 792                             window);
 793
 794   undo_redo_update (window);
 795
 796   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 797                                                    G_CALLBACK (selection_changed), window);
 798
 799   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 800                                           G_CALLBACK (set_paste_sensitivity), window);
 801
 802   connect_help (xml);
 803
 804   gtk_container_add (GTK_CONTAINER (window), box);
 805
 806   g_object_ref (menubar);
 807
 808   g_object_ref (sw);
 809
 810   g_object_ref (window->sb);
 811
 812   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 813   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 814   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 815
 816   gtk_widget_show_all (box);
 817
 818   g_signal_connect_swapped (get_action_assert (xml,"file_new_syntax"), "activate", G_CALLBACK (create_syntax_window), NULL);
 819
 820   g_signal_connect (get_action_assert (xml,"file_new_data"),
 821                     "activate",
 822                     G_CALLBACK (create_data_window),
 823                     window);
 824
 825   g_signal_connect_swapped (get_action_assert (xml, "file_open"),
 826                     "activate",
 827                     G_CALLBACK (psppire_window_open),
 828                     window);
 829
 830   g_signal_connect_swapped (get_action_assert (xml, "file_save"),
 831                     "activate",
 832                     G_CALLBACK (psppire_window_save),
 833                     window);
 834
 835   g_signal_connect_swapped (get_action_assert (xml, "file_save_as"),
 836                     "activate",
 837                     G_CALLBACK (psppire_window_save_as),
 838                     window);
 839
 840   g_signal_connect (get_action_assert (xml,"file_quit"),
 841                     "activate",
 842                     G_CALLBACK (on_quit),
 843                     window);
 844
 845   g_signal_connect_swapped (window->edit_delete,
 846                     "activate",
 847                     G_CALLBACK (on_edit_delete),
 848                     window);
 849
 850   g_signal_connect_swapped (window->edit_copy,
 851                     "activate",
 852                     G_CALLBACK (on_edit_copy),
 853                     window);
 854
 855   g_signal_connect_swapped (window->edit_cut,
 856                     "activate",
 857                     G_CALLBACK (on_edit_cut),
 858                     window);
 859
 860   g_signal_connect_swapped (window->edit_paste,
 861                     "activate",
 862                     G_CALLBACK (on_edit_paste),
 863                     window);
 864
 865   g_signal_connect (get_action_assert (xml,"run_all"),
 866                     "activate",
 867                     G_CALLBACK (on_run_all),
 868                     window);
 869
 870   g_signal_connect (get_action_assert (xml,"run_selection"),
 871                     "activate",
 872                     G_CALLBACK (on_run_selection),
 873                     window);
 874
 875   g_signal_connect (get_action_assert (xml,"run_current_line"),
 876                     "activate",
 877                     G_CALLBACK (on_run_current_line),
 878                     window);
 879
 880   g_signal_connect (get_action_assert (xml,"run_to_end"),
 881                     "activate",
 882                     G_CALLBACK (on_run_to_end),
 883                     window);
 884
 885   g_signal_connect (get_action_assert (xml,"windows_minimise_all"),
 886                     "activate",
 887                     G_CALLBACK (psppire_window_minimise_all), NULL);
 888
 889
 890
 891
 892
 893   {
 894   GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
 895
 896   merge_help_menu (uim);
 897
 898   PSPPIRE_WINDOW (window)->menu =
 899     GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
 900   }
 901
 902   g_object_unref (xml);
 903 }
 904
 905
 906
 907
 908
 909 GtkWidget*
 910 psppire_syntax_window_new (const char *encoding)
 911 {
 912   return GTK_WIDGET (g_object_new (psppire_syntax_window_get_type (),
 913                                    "description", _("Syntax Editor"),
 914                                    "encoding", encoding,
 915                                    NULL));
 916 }
 917
 918 static void
 919 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
 920 {
 921   gchar *fn = g_filename_display_basename (filename);
 922
 923   GtkWidget *dialog =
 924     gtk_message_dialog_new (w,
 925                             GTK_DIALOG_DESTROY_WITH_PARENT,
 926                             GTK_MESSAGE_ERROR,
 927                             GTK_BUTTONS_CLOSE,
 928                             _("Cannot load syntax file `%s'"),
 929                             fn);
 930
 931   g_free (fn);
 932
 933   g_object_set (dialog, "icon-name", "pspp", NULL);
 934
 935   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 936                                             "%s", err->message);
 937
 938   gtk_dialog_run (GTK_DIALOG (dialog));
 939
 940   gtk_widget_destroy (dialog);
 941 }
 942
 943 /*
 944   Loads the buffer from the file called FILENAME
 945 */
 946 gboolean
 947 syntax_load (PsppireWindow *window, const gchar *filename)
 948 {
 949   GError *err = NULL;
 950   gchar *text_locale = NULL;
 951   gchar *text_utf8 = NULL;
 952   gsize len_locale = -1;
 953   gsize len_utf8 = -1;
 954   GtkTextIter iter;
 955   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
 956   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 957   gchar *encoding;
 958   char *mime_type;
 959
 960   /* FIXME: What if it's a very big file ? */
 961   if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
 962     {
 963       error_dialog (GTK_WINDOW (window), filename, err);
 964       g_clear_error (&err);
 965       return FALSE;
 966     }
 967
 968   /* Determine the file's encoding and update sw->encoding.  (The ordering is
 969      important here because encoding_guess_whole_file() often returns its
 970      argument instead of a copy of it.) */
 971   encoding = g_strdup (encoding_guess_whole_file (sw->encoding, text_locale,
 972                                                   len_locale));
 973   g_free (sw->encoding);
 974   sw->encoding = encoding;
 975
 976   text_utf8 = recode_substring_pool ("UTF-8", encoding,
 977                                      ss_buffer (text_locale, len_locale),
 978                                      NULL).string;
 979   free (text_locale);
 980
 981   if ( text_utf8 == NULL )
 982     {
 983       error_dialog (GTK_WINDOW (window), filename, err);
 984       g_clear_error (&err);
 985       return FALSE;
 986     }
 987
 988   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
 989
 990   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
 991
 992   gtk_text_buffer_set_modified (buffer, FALSE);
 993
 994   free (text_utf8);
 995
 996   mime_type = xasprintf ("text/x-spss-syntax; charset=%s", sw->encoding);
 997   add_most_recent (filename, mime_type);
 998   free (mime_type);
 999
1000   return TRUE;
1001 }
1002
1003 \f
1004
1005 static void
1006 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1007 {
1008   iface->save = syntax_save;
1009   iface->pick_filename = syntax_pick_filename;
1010   iface->load = syntax_load;
1011 }
1012
1013
1014 \f
1015
1016 static void
1017 undo_redo_update (PsppireSyntaxWindow *window)
1018 {
1019   gtk_action_set_sensitive (window->undo_menuitem,
1020                             gtk_source_buffer_can_undo (window->buffer));
1021
1022   gtk_action_set_sensitive (window->redo_menuitem,
1023                             gtk_source_buffer_can_redo (window->buffer));
1024 }
1025
1026 static void
1027 undo_last_edit (PsppireSyntaxWindow *window)
1028 {
1029   gtk_source_buffer_undo (window->buffer);
1030   undo_redo_update (window);
1031 }
1032
1033 static void
1034 redo_last_edit (PsppireSyntaxWindow *window)
1035 {
1036   gtk_source_buffer_redo (window->buffer);
1037   undo_redo_update (window);
1038 }
1039
1040
1041 \f
1042 /* Printing related stuff */
1043
1044
1045 static void
1046 begin_print (GtkPrintOperation *operation,
1047           GtkPrintContext   *context,
1048           PsppireSyntaxWindow *window)
1049 {
1050   window->compositor =
1051     gtk_source_print_compositor_new (window->buffer);
1052 }
1053
1054
1055 static void
1056 end_print (GtkPrintOperation *operation,
1057           GtkPrintContext   *context,
1058           PsppireSyntaxWindow *window)
1059 {
1060   g_object_unref (window->compositor);
1061   window->compositor = NULL;
1062 }
1063
1064
1065
1066 static gboolean
1067 paginate (GtkPrintOperation *operation,
1068           GtkPrintContext   *context,
1069           PsppireSyntaxWindow *window)
1070 {
1071   if (gtk_source_print_compositor_paginate (window->compositor, context))
1072     {
1073       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1074       gtk_print_operation_set_n_pages (operation, n_pages);
1075
1076       return TRUE;
1077     }
1078
1079   return FALSE;
1080 }
1081
1082 static void
1083 draw_page (GtkPrintOperation *operation,
1084            GtkPrintContext   *context,
1085            gint               page_nr,
1086           PsppireSyntaxWindow *window)
1087 {
1088   gtk_source_print_compositor_draw_page (window->compositor,
1089                                          context,
1090                                          page_nr);
1091 }
1092
1093
1094
1095 static void
1096 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1097 {
1098   GtkPrintOperationResult res;
1099
1100   GtkPrintOperation *print = gtk_print_operation_new ();
1101
1102   if (window->print_settings != NULL)
1103     gtk_print_operation_set_print_settings (print, window->print_settings);
1104
1105
1106   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1107   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1108   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1109   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1110
1111   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1112                                  GTK_WINDOW (window), NULL);
1113
1114   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1115     {
1116       if (window->print_settings != NULL)
1117         g_object_unref (window->print_settings);
1118       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1119     }
1120
1121   g_object_unref (print);
1122 }