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