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

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2008, 2009, 2010, 2011, 2012, 2014  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 static void
 374 on_edit_paste (PsppireSyntaxWindow *sw)
 375 {
 376   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 377   GtkClipboard *clipboard =
 378     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 379
 380   gtk_text_buffer_paste_clipboard (GTK_TEXT_BUFFER (sw->buffer), clipboard, NULL, TRUE);
 381 }
 382
 383
 384 /* Check to see if CLIP holds a target which we know how to paste,
 385    and set the sensitivity of the Paste action accordingly.
 386  */
 387 static void
 388 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 389 {
 390   gint i;
 391   gboolean compatible_target = FALSE;
 392   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 393
 394   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 395     {
 396       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 397       if ( gtk_clipboard_wait_is_target_available (clip, atom))
 398         {
 399           compatible_target = TRUE;
 400           break;
 401         }
 402     }
 403
 404   gtk_action_set_sensitive (sw->edit_paste, compatible_target);
 405 }
 406
 407
 408 \f
 409
 410 /* Parse and execute all the text in the buffer */
 411 static void
 412 on_run_all (GtkMenuItem *menuitem, gpointer user_data)
 413 {
 414   GtkTextIter begin, end;
 415   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 416
 417   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 418   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 419
 420   editor_execute_syntax (se, begin, end);
 421 }
 422
 423 /* Parse and execute the currently selected text */
 424 static void
 425 on_run_selection (GtkMenuItem *menuitem, gpointer user_data)
 426 {
 427   GtkTextIter begin, end;
 428   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 429
 430   if ( gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end) )
 431     editor_execute_syntax (se, begin, end);
 432 }
 433
 434
 435 /* Parse and execute the from the current line, to the end of the
 436    buffer */
 437 static void
 438 on_run_to_end (GtkMenuItem *menuitem, gpointer user_data)
 439 {
 440   GtkTextIter begin, end;
 441   GtkTextIter here;
 442   gint line;
 443
 444   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 445
 446   /* Get the current line */
 447   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 448                                     &here,
 449                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 450                                     );
 451
 452   line = gtk_text_iter_get_line (&here) ;
 453
 454   /* Now set begin and end to the start of this line, and end of buffer
 455      respectively */
 456   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 457   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 458
 459   editor_execute_syntax (se, begin, end);
 460 }
 461
 462
 463
 464 /* Parse and execute the current line */
 465 static void
 466 on_run_current_line (GtkMenuItem *menuitem, gpointer user_data)
 467 {
 468   GtkTextIter begin, end;
 469   GtkTextIter here;
 470   gint line;
 471
 472   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
 473
 474   /* Get the current line */
 475   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 476                                     &here,
 477                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 478                                     );
 479
 480   line = gtk_text_iter_get_line (&here) ;
 481
 482   /* Now set begin and end to the start of this line, and start of
 483      following line respectively */
 484   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 485   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 486
 487   editor_execute_syntax (se, begin, end);
 488 }
 489
 490
 491
 492 /* Append ".sps" to FILENAME if necessary.
 493    The returned result must be freed when no longer required.
 494  */
 495 static gchar *
 496 append_suffix (const gchar *filename)
 497 {
 498   if ( ! g_str_has_suffix (filename, ".sps" ) &&
 499        ! g_str_has_suffix (filename, ".SPS" ) )
 500     {
 501       return g_strdup_printf ("%s.sps", filename);
 502     }
 503
 504   return xstrdup (filename);
 505 }
 506
 507 /*
 508   Save BUFFER to the file called FILENAME.
 509   FILENAME must be encoded in Glib filename encoding.
 510   If successful, clears the buffer's modified flag.
 511 */
 512 static gboolean
 513 save_editor_to_file (PsppireSyntaxWindow *se,
 514                      const gchar *filename,
 515                      GError **err)
 516 {
 517   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 518   struct substring text_locale;
 519   gboolean result ;
 520   GtkTextIter start, stop;
 521   gchar *text;
 522
 523   gchar *suffixedname;
 524   g_assert (filename);
 525
 526   suffixedname = append_suffix (filename);
 527
 528   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 529   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 530
 531   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 532
 533   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 534                                        NULL);
 535
 536   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 537                                  ss_length (text_locale), err);
 538
 539   ss_dealloc (&text_locale);
 540   g_free (suffixedname);
 541
 542   if ( result )
 543     {
 544       char *fn = g_filename_display_name (filename);
 545       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 546       g_free (fn);
 547       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 548       gtk_text_buffer_set_modified (buffer, FALSE);
 549       g_free (msg);
 550     }
 551
 552   return result;
 553 }
 554
 555
 556 /* PsppireWindow 'pick_Filename' callback. */
 557 static void
 558 syntax_pick_filename (PsppireWindow *window)
 559 {
 560   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 561   const char *default_encoding;
 562   GtkFileFilter *filter;
 563   gint response;
 564
 565   GtkWidget *dialog =
 566     gtk_file_chooser_dialog_new (_("Save Syntax"),
 567                                  GTK_WINDOW (se),
 568                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 569                                  GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 570                                  GTK_STOCK_SAVE,   GTK_RESPONSE_ACCEPT,
 571                                  NULL);
 572
 573   g_object_set (dialog, "local-only", FALSE, NULL);
 574
 575   filter = gtk_file_filter_new ();
 576   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 577   gtk_file_filter_add_pattern (filter, "*.sps");
 578   gtk_file_filter_add_pattern (filter, "*.SPS");
 579   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 580
 581   filter = gtk_file_filter_new ();
 582   gtk_file_filter_set_name (filter, _("All Files"));
 583   gtk_file_filter_add_pattern (filter, "*");
 584   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 585
 586   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 587                                                   TRUE);
 588
 589   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 590   gtk_file_chooser_set_extra_widget (
 591     GTK_FILE_CHOOSER (dialog),
 592     psppire_encoding_selector_new (default_encoding, false));
 593
 594   response = gtk_dialog_run (GTK_DIALOG (dialog));
 595
 596   if ( response == GTK_RESPONSE_ACCEPT )
 597     {
 598       gchar *encoding;
 599       char *filename;
 600
 601       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog) );
 602       psppire_window_set_filename (window, filename);
 603       free (filename);
 604
 605       encoding = psppire_encoding_selector_get_encoding (
 606         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 607       if (encoding != NULL)
 608         {
 609           g_free (se->encoding);
 610           se->encoding = encoding;
 611         }
 612     }
 613
 614   gtk_widget_destroy (dialog);
 615 }
 616
 617
 618 /* PsppireWindow 'save' callback. */
 619 static void
 620 syntax_save (PsppireWindow *se)
 621 {
 622   const gchar *filename = psppire_window_get_filename (se);
 623   GError *err = NULL;
 624   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 625   if ( err )
 626     {
 627       msg (ME, "%s", err->message);
 628       g_error_free (err);
 629     }
 630 }
 631
 632
 633 /* Callback for the File->Quit menuitem */
 634 static gboolean
 635 on_quit (GtkMenuItem *menuitem, gpointer    user_data)
 636 {
 637   psppire_quit ();
 638
 639   return FALSE;
 640 }
 641
 642
 643 static void
 644 load_and_show_syntax_window (GtkWidget *se, const gchar *filename,
 645                              const gchar *encoding)
 646 {
 647   gboolean ok;
 648
 649   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 650   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename, encoding, NULL);
 651   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 652
 653   if (ok )
 654     gtk_widget_show (se);
 655   else
 656     gtk_widget_destroy (se);
 657 }
 658
 659 void
 660 create_syntax_window (void)
 661 {
 662   GtkWidget *w = psppire_syntax_window_new (NULL);
 663   gtk_widget_show (w);
 664 }
 665
 666 void
 667 open_syntax_window (const char *file_name, const gchar *encoding)
 668 {
 669   GtkWidget *se = psppire_syntax_window_new (NULL);
 670
 671   if ( file_name)
 672     load_and_show_syntax_window (se, file_name, encoding);
 673 }
 674
 675
 676
 677 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 678
 679 static void
 680 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 681 {
 682   if (gtk_text_buffer_get_modified (buffer))
 683     psppire_window_set_unsaved (window);
 684 }
 685
 686 static void undo_redo_update (PsppireSyntaxWindow *window);
 687 static void undo_last_edit (PsppireSyntaxWindow *window);
 688 static void redo_last_edit (PsppireSyntaxWindow *window);
 689
 690 static void
 691 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 692 {
 693   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 694   undo_redo_update (window);
 695 }
 696
 697 static void
 698 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 699 {
 700   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 701   GtkWidget *box = gtk_vbox_new (FALSE, 0);
 702
 703   GtkWidget *menubar = get_widget_assert (xml, "menubar");
 704   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 705
 706   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 707
 708   PsppireSyntaxWindowClass *class
 709     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 710
 711   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 712   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 713
 714   window->print_settings = NULL;
 715   window->undo_menuitem = get_action_assert (xml, "edit_undo");
 716   window->redo_menuitem = get_action_assert (xml, "edit_redo");
 717
 718   if (class->lan)
 719     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 720   else
 721     window->buffer = gtk_source_buffer_new (NULL);
 722
 723   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 724
 725   g_object_set (window->buffer,
 726                 "highlight-matching-brackets", TRUE,
 727                 NULL);
 728
 729   g_object_set (text_view,
 730                 "show-line-numbers", TRUE,
 731                 "show-line-marks", TRUE,
 732                 "auto-indent", TRUE,
 733                 "indent-width", 4,
 734                 "highlight-current-line", TRUE,
 735                 NULL);
 736
 737   window->encoding = NULL;
 738
 739   window->cliptext = NULL;
 740   window->dispose_has_run = FALSE;
 741
 742   window->edit_delete = get_action_assert (xml, "edit_delete");
 743   window->edit_copy = get_action_assert (xml, "edit_copy");
 744   window->edit_cut = get_action_assert (xml, "edit_cut");
 745   window->edit_paste = get_action_assert (xml, "edit_paste");
 746
 747   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
 748
 749   window->sb = get_widget_assert (xml, "statusbar2");
 750   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
 751
 752   g_signal_connect (window->buffer, "changed",
 753                     G_CALLBACK (on_text_changed), window);
 754
 755   g_signal_connect (window->buffer, "modified-changed",
 756                     G_CALLBACK (on_modified_changed), window);
 757
 758   g_signal_connect_swapped (get_action_assert (xml, "file_print"), "activate",
 759                             G_CALLBACK (psppire_syntax_window_print), window);
 760
 761
 762   g_signal_connect_swapped (window->undo_menuitem,
 763                             "activate",
 764                             G_CALLBACK (undo_last_edit),
 765                             window);
 766
 767   g_signal_connect_swapped (window->redo_menuitem,
 768                             "activate",
 769                             G_CALLBACK (redo_last_edit),
 770                             window);
 771
 772   undo_redo_update (window);
 773
 774   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 775                                                    G_CALLBACK (selection_changed), window);
 776
 777   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 778                                           G_CALLBACK (set_paste_sensitivity), window);
 779
 780   connect_help (xml);
 781
 782   gtk_container_add (GTK_CONTAINER (window), box);
 783
 784   g_object_ref (menubar);
 785
 786   g_object_ref (sw);
 787
 788   g_object_ref (window->sb);
 789
 790   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 791   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 792   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 793
 794   gtk_widget_show_all (box);
 795
 796   g_signal_connect_swapped (get_action_assert (xml,"file_new_syntax"), "activate", G_CALLBACK (create_syntax_window), NULL);
 797
 798   g_signal_connect (get_action_assert (xml,"file_new_data"),
 799                     "activate",
 800                     G_CALLBACK (create_data_window),
 801                     window);
 802
 803   g_signal_connect_swapped (get_action_assert (xml, "file_open"),
 804                     "activate",
 805                     G_CALLBACK (psppire_window_open),
 806                     window);
 807
 808   g_signal_connect_swapped (get_action_assert (xml, "file_save"),
 809                     "activate",
 810                     G_CALLBACK (psppire_window_save),
 811                     window);
 812
 813   g_signal_connect_swapped (get_action_assert (xml, "file_save_as"),
 814                     "activate",
 815                     G_CALLBACK (psppire_window_save_as),
 816                     window);
 817
 818   g_signal_connect (get_action_assert (xml,"file_quit"),
 819                     "activate",
 820                     G_CALLBACK (on_quit),
 821                     window);
 822
 823   g_signal_connect_swapped (window->edit_delete,
 824                     "activate",
 825                     G_CALLBACK (on_edit_delete),
 826                     window);
 827
 828   g_signal_connect_swapped (window->edit_copy,
 829                     "activate",
 830                     G_CALLBACK (on_edit_copy),
 831                     window);
 832
 833   g_signal_connect_swapped (window->edit_cut,
 834                     "activate",
 835                     G_CALLBACK (on_edit_cut),
 836                     window);
 837
 838   g_signal_connect_swapped (window->edit_paste,
 839                     "activate",
 840                     G_CALLBACK (on_edit_paste),
 841                     window);
 842
 843   g_signal_connect (get_action_assert (xml,"run_all"),
 844                     "activate",
 845                     G_CALLBACK (on_run_all),
 846                     window);
 847
 848   g_signal_connect (get_action_assert (xml,"run_selection"),
 849                     "activate",
 850                     G_CALLBACK (on_run_selection),
 851                     window);
 852
 853   g_signal_connect (get_action_assert (xml,"run_current_line"),
 854                     "activate",
 855                     G_CALLBACK (on_run_current_line),
 856                     window);
 857
 858   g_signal_connect (get_action_assert (xml,"run_to_end"),
 859                     "activate",
 860                     G_CALLBACK (on_run_to_end),
 861                     window);
 862
 863   g_signal_connect (get_action_assert (xml,"windows_minimise_all"),
 864                     "activate",
 865                     G_CALLBACK (psppire_window_minimise_all), NULL);
 866
 867
 868
 869
 870
 871   {
 872   GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
 873
 874   merge_help_menu (uim);
 875
 876   PSPPIRE_WINDOW (window)->menu =
 877     GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
 878   }
 879
 880   g_object_unref (xml);
 881 }
 882
 883
 884
 885
 886
 887 GtkWidget*
 888 psppire_syntax_window_new (const char *encoding)
 889 {
 890   return GTK_WIDGET (g_object_new (psppire_syntax_window_get_type (),
 891                                    "description", _("Syntax Editor"),
 892                                    "encoding", encoding,
 893                                    NULL));
 894 }
 895
 896 static void
 897 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
 898 {
 899   gchar *fn = g_filename_display_basename (filename);
 900
 901   GtkWidget *dialog =
 902     gtk_message_dialog_new (w,
 903                             GTK_DIALOG_DESTROY_WITH_PARENT,
 904                             GTK_MESSAGE_ERROR,
 905                             GTK_BUTTONS_CLOSE,
 906                             _("Cannot load syntax file `%s'"),
 907                             fn);
 908
 909   g_free (fn);
 910
 911   g_object_set (dialog, "icon-name", "pspp", NULL);
 912
 913   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 914                                             "%s", err->message);
 915
 916   gtk_dialog_run (GTK_DIALOG (dialog));
 917
 918   gtk_widget_destroy (dialog);
 919 }
 920
 921 /*
 922   Loads the buffer from the file called FILENAME
 923 */
 924 gboolean
 925 syntax_load (PsppireWindow *window, const gchar *filename,
 926              const gchar *encoding, gpointer not_used)
 927 {
 928   GError *err = NULL;
 929   gchar *text_locale = NULL;
 930   gchar *text_utf8 = NULL;
 931   gsize len_locale = -1;
 932   gsize len_utf8 = -1;
 933   GtkTextIter iter;
 934   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
 935   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 936
 937   /* FIXME: What if it's a very big file ? */
 938   if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
 939     {
 940       error_dialog (GTK_WINDOW (window), filename, err);
 941       g_clear_error (&err);
 942       return FALSE;
 943     }
 944
 945   if (!encoding || !encoding[0])
 946     {
 947       /* Determine the file's encoding and update sw->encoding.  (The ordering
 948          is important here because encoding_guess_whole_file() often returns
 949          its argument instead of a copy of it.) */
 950       char *guessed_encoding;
 951
 952       guessed_encoding = g_strdup (encoding_guess_whole_file (sw->encoding,
 953                                                               text_locale,
 954                                                               len_locale));
 955       g_free (sw->encoding);
 956       sw->encoding = guessed_encoding;
 957     }
 958   else
 959     {
 960       g_free (sw->encoding);
 961       sw->encoding = g_strdup (encoding);
 962     }
 963
 964   text_utf8 = recode_substring_pool ("UTF-8", sw->encoding,
 965                                      ss_buffer (text_locale, len_locale),
 966                                      NULL).string;
 967   free (text_locale);
 968
 969   if ( text_utf8 == NULL )
 970     {
 971       error_dialog (GTK_WINDOW (window), filename, err);
 972       g_clear_error (&err);
 973       return FALSE;
 974     }
 975
 976   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
 977
 978   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
 979
 980   gtk_text_buffer_set_modified (buffer, FALSE);
 981
 982   free (text_utf8);
 983
 984   add_most_recent (filename, "text/x-spss-syntax", sw->encoding);
 985
 986   return TRUE;
 987 }
 988
 989 \f
 990
 991 static void
 992 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
 993 {
 994   iface->save = syntax_save;
 995   iface->pick_filename = syntax_pick_filename;
 996   iface->load = syntax_load;
 997 }
 998
 999
1000 \f
1001
1002 static void
1003 undo_redo_update (PsppireSyntaxWindow *window)
1004 {
1005   gtk_action_set_sensitive (window->undo_menuitem,
1006                             gtk_source_buffer_can_undo (window->buffer));
1007
1008   gtk_action_set_sensitive (window->redo_menuitem,
1009                             gtk_source_buffer_can_redo (window->buffer));
1010 }
1011
1012 static void
1013 undo_last_edit (PsppireSyntaxWindow *window)
1014 {
1015   gtk_source_buffer_undo (window->buffer);
1016   undo_redo_update (window);
1017 }
1018
1019 static void
1020 redo_last_edit (PsppireSyntaxWindow *window)
1021 {
1022   gtk_source_buffer_redo (window->buffer);
1023   undo_redo_update (window);
1024 }
1025
1026
1027 \f
1028 /* Printing related stuff */
1029
1030
1031 static void
1032 begin_print (GtkPrintOperation *operation,
1033           GtkPrintContext   *context,
1034           PsppireSyntaxWindow *window)
1035 {
1036   window->compositor =
1037     gtk_source_print_compositor_new (window->buffer);
1038 }
1039
1040
1041 static void
1042 end_print (GtkPrintOperation *operation,
1043           GtkPrintContext   *context,
1044           PsppireSyntaxWindow *window)
1045 {
1046   g_object_unref (window->compositor);
1047   window->compositor = NULL;
1048 }
1049
1050
1051
1052 static gboolean
1053 paginate (GtkPrintOperation *operation,
1054           GtkPrintContext   *context,
1055           PsppireSyntaxWindow *window)
1056 {
1057   if (gtk_source_print_compositor_paginate (window->compositor, context))
1058     {
1059       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1060       gtk_print_operation_set_n_pages (operation, n_pages);
1061
1062       return TRUE;
1063     }
1064
1065   return FALSE;
1066 }
1067
1068 static void
1069 draw_page (GtkPrintOperation *operation,
1070            GtkPrintContext   *context,
1071            gint               page_nr,
1072           PsppireSyntaxWindow *window)
1073 {
1074   gtk_source_print_compositor_draw_page (window->compositor,
1075                                          context,
1076                                          page_nr);
1077 }
1078
1079
1080
1081 static void
1082 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1083 {
1084   GtkPrintOperationResult res;
1085
1086   GtkPrintOperation *print = gtk_print_operation_new ();
1087
1088   if (window->print_settings != NULL)
1089     gtk_print_operation_set_print_settings (print, window->print_settings);
1090
1091
1092   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1093   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1094   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1095   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1096
1097   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1098                                  GTK_WINDOW (window), NULL);
1099
1100   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1101     {
1102       if (window->print_settings != NULL)
1103         g_object_unref (window->print_settings);
1104       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1105     }
1106
1107   g_object_unref (print);
1108 }