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, 2016  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/gtksource.h>
  23
  24 #include "language/lexer/lexer.h"
  25 #include "libpspp/encoding-guesser.h"
  26 #include "libpspp/i18n.h"
  27 #include "libpspp/message.h"
  28 #include "ui/gui/executor.h"
  29 #include "ui/gui/help-menu.h"
  30 #include "ui/gui/helper.h"
  31 #include "ui/gui/builder-wrapper.h"
  32 #include "ui/gui/psppire-data-window.h"
  33 #include "ui/gui/psppire-encoding-selector.h"
  34 #include "ui/gui/psppire-lex-reader.h"
  35 #include "ui/gui/psppire-syntax-window.h"
  36 #include "ui/gui/psppire.h"
  37 #include "ui/gui/windows-menu.h"
  38
  39 #include "gl/localcharset.h"
  40 #include "gl/xalloc.h"
  41 #include "gl/xvasprintf.h"
  42
  43 #include <gettext.h>
  44 #define _(msgid) gettext (msgid)
  45 #define N_(msgid) msgid
  46
  47 static void psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *, gpointer);
  48 static void psppire_syntax_window_base_init     (PsppireSyntaxWindowClass *class);
  49 static void psppire_syntax_window_class_init    (PsppireSyntaxWindowClass *class);
  50 static void psppire_syntax_window_init          (PsppireSyntaxWindow      *syntax_editor);
  51
  52
  53 static void psppire_syntax_window_iface_init (PsppireWindowIface *iface);
  54
  55
  56 /* Properties */
  57 enum
  58 {
  59   PROP_0,
  60   PROP_ENCODING
  61 };
  62
  63 static void
  64 psppire_syntax_window_set_property (GObject         *object,
  65                                     guint            prop_id,
  66                                     const GValue    *value,
  67                                     GParamSpec      *pspec)
  68 {
  69   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  70
  71   switch (prop_id)
  72     {
  73     case PROP_ENCODING:
  74       g_free (window->encoding);
  75       window->encoding = g_value_dup_string (value);
  76       break;
  77     default:
  78       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  79       break;
  80     };
  81 }
  82
  83
  84 static void
  85 psppire_syntax_window_get_property (GObject         *object,
  86                                     guint            prop_id,
  87                                     GValue          *value,
  88                                     GParamSpec      *pspec)
  89 {
  90   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
  91
  92   switch (prop_id)
  93     {
  94     case PROP_ENCODING:
  95       g_value_set_string (value, window->encoding);
  96       break;
  97     default:
  98       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  99       break;
 100     };
 101 }
 102
 103 GType
 104 psppire_syntax_window_get_type (void)
 105 {
 106   static GType psppire_syntax_window_type = 0;
 107
 108   if (!psppire_syntax_window_type)
 109     {
 110       static const GTypeInfo psppire_syntax_window_info =
 111       {
 112         sizeof (PsppireSyntaxWindowClass),
 113         (GBaseInitFunc) psppire_syntax_window_base_init,
 114         (GBaseFinalizeFunc) psppire_syntax_window_base_finalize,
 115         (GClassInitFunc)psppire_syntax_window_class_init,
 116         (GClassFinalizeFunc) NULL,
 117         NULL,
 118         sizeof (PsppireSyntaxWindow),
 119         0,
 120         (GInstanceInitFunc) psppire_syntax_window_init,
 121       };
 122
 123       static const GInterfaceInfo window_interface_info =
 124         {
 125           (GInterfaceInitFunc) psppire_syntax_window_iface_init,
 126           NULL,
 127           NULL
 128         };
 129
 130       psppire_syntax_window_type =
 131         g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireSyntaxWindow",
 132                                 &psppire_syntax_window_info, 0);
 133
 134       g_type_add_interface_static (psppire_syntax_window_type,
 135                                    PSPPIRE_TYPE_WINDOW_MODEL,
 136                                    &window_interface_info);
 137     }
 138
 139   return psppire_syntax_window_type;
 140 }
 141
 142 static GObjectClass *parent_class ;
 143
 144 static void
 145 psppire_syntax_window_finalize (GObject *object)
 146 {
 147   if (G_OBJECT_CLASS (parent_class)->finalize)
 148     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
 149 }
 150
 151
 152 static void
 153 psppire_syntax_window_dispose (GObject *obj)
 154 {
 155   PsppireSyntaxWindow *sw = (PsppireSyntaxWindow *)obj;
 156
 157   GtkClipboard *clip_selection;
 158   GtkClipboard *clip_primary;
 159
 160   if (sw->dispose_has_run)
 161     return;
 162
 163   g_free (sw->encoding);
 164   sw->encoding = NULL;
 165
 166   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 167   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
 168
 169   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
 170
 171   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
 172
 173   /* Make sure dispose does not run twice. */
 174   sw->dispose_has_run = TRUE;
 175
 176   /* Chain up to the parent class */
 177   G_OBJECT_CLASS (parent_class)->dispose (obj);
 178 }
 179
 180
 181
 182 static void
 183 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
 184 {
 185   GParamSpec *encoding_spec;
 186   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 187
 188   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
 189
 190   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
 191   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
 192   int n = g_strv_length ((gchar **) existing_paths);
 193
 194   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
 195   new_paths[n] = g_strdup (relocate (PKGDATADIR));
 196   new_paths[n+1] = NULL;
 197
 198   lm = gtk_source_language_manager_new ();
 199   gtk_source_language_manager_set_search_path (lm, new_paths);
 200
 201   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
 202
 203   if (class->lan == NULL)
 204     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
 205
 206   parent_class = g_type_class_peek_parent (class);
 207
 208   g_strfreev (new_paths);
 209
 210   encoding_spec =
 211     null_if_empty_param ("encoding",
 212                          "Character encoding",
 213                          "IANA character encoding in this syntax file",
 214                          NULL,
 215                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
 216
 217   parent_class = g_type_class_peek_parent (class);
 218
 219   gobject_class->set_property = psppire_syntax_window_set_property;
 220   gobject_class->get_property = psppire_syntax_window_get_property;
 221   gobject_class->dispose = psppire_syntax_window_dispose;
 222
 223   g_object_class_install_property (gobject_class,
 224                                    PROP_ENCODING,
 225                                    encoding_spec);
 226 }
 227
 228
 229 static void
 230 psppire_syntax_window_base_init (PsppireSyntaxWindowClass *class)
 231 {
 232   GObjectClass *object_class = G_OBJECT_CLASS (class);
 233   object_class->finalize = psppire_syntax_window_finalize;
 234 }
 235
 236
 237
 238 static void
 239 psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *class,
 240                                      gpointer class_data)
 241 {
 242 }
 243
 244
 245 static void
 246 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 247                        GtkTextIter stop)
 248 {
 249   PsppireWindow *win = PSPPIRE_WINDOW (sw);
 250   struct lex_reader *reader = lex_reader_for_gtk_text_buffer (GTK_TEXT_BUFFER (sw->buffer), start, stop);
 251
 252   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
 253
 254   execute_syntax (psppire_default_data_window (), reader);
 255 }
 256 \f
 257 /* Delete the currently selected text */
 258 static void
 259 on_edit_delete (PsppireSyntaxWindow *sw)
 260 {
 261   GtkTextIter begin, end;
 262   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 263
 264   if ( gtk_text_buffer_get_selection_bounds (buffer, &begin, &end) )
 265     gtk_text_buffer_delete (buffer, &begin, &end);
 266 }
 267
 268
 269 /* The syntax editor's clipboard deals only with text */
 270 enum {
 271   SELECT_FMT_NULL,
 272   SELECT_FMT_TEXT,
 273 };
 274
 275
 276 static void
 277 selection_changed (PsppireSyntaxWindow *sw)
 278 {
 279   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
 280
 281   g_object_set (sw->edit_copy,    "enabled", sel, NULL);
 282   g_object_set (sw->edit_cut,     "enabled", sel, NULL);
 283   g_object_set (sw->edit_delete,  "enabled", sel, NULL);
 284 }
 285
 286 /* The callback which runs when something request clipboard data */
 287 static void
 288 clipboard_get_cb (GtkClipboard     *clipboard,
 289                   GtkSelectionData *selection_data,
 290                   guint             info,
 291                   gpointer          data)
 292 {
 293   PsppireSyntaxWindow *sw = data;
 294   g_assert (info == SELECT_FMT_TEXT);
 295
 296   gtk_selection_data_set (selection_data, gtk_selection_data_get_target (selection_data),
 297                           8,
 298                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
 299
 300 }
 301
 302 static void
 303 clipboard_clear_cb (GtkClipboard *clipboard,
 304                     gpointer data)
 305 {
 306   PsppireSyntaxWindow *sw = data;
 307   g_free (sw->cliptext);
 308   sw->cliptext = NULL;
 309 }
 310
 311
 312 static const GtkTargetEntry targets[] = {
 313   { "UTF8_STRING",   0, SELECT_FMT_TEXT },
 314   { "STRING",        0, SELECT_FMT_TEXT },
 315   { "TEXT",          0, SELECT_FMT_TEXT },
 316   { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
 317   { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
 318   { "text/plain",    0, SELECT_FMT_TEXT },
 319 };
 320
 321
 322 /*
 323   Store a clip containing the currently selected text.
 324   Returns true iff something was set.
 325   As a side effect, begin and end will be set to indicate
 326   the limits of the selected text.
 327 */
 328 static gboolean
 329 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
 330 {
 331   GtkClipboard *clipboard ;
 332   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 333
 334   if ( ! gtk_text_buffer_get_selection_bounds (buffer, begin, end) )
 335     return FALSE;
 336
 337   g_free (sw->cliptext);
 338   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
 339
 340   clipboard =
 341     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
 342
 343   if (!gtk_clipboard_set_with_owner (clipboard, targets,
 344                                      G_N_ELEMENTS (targets),
 345                                      clipboard_get_cb, clipboard_clear_cb,
 346                                      G_OBJECT (sw)))
 347     clipboard_clear_cb (clipboard, sw);
 348
 349   return TRUE;
 350 }
 351
 352 static void
 353 on_edit_cut (PsppireSyntaxWindow *sw)
 354 {
 355   GtkTextIter begin, end;
 356
 357   if ( set_clip (sw, &begin, &end))
 358     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
 359 }
 360
 361 static void
 362 on_edit_copy (PsppireSyntaxWindow *sw)
 363 {
 364   GtkTextIter begin, end;
 365
 366   set_clip (sw, &begin, &end);
 367 }
 368
 369 static void
 370 on_edit_paste (PsppireSyntaxWindow *sw)
 371 {
 372   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
 373   GtkClipboard *clipboard =
 374     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
 375
 376   gtk_text_buffer_paste_clipboard (GTK_TEXT_BUFFER (sw->buffer), clipboard, NULL, TRUE);
 377 }
 378
 379
 380 /* Check to see if CLIP holds a target which we know how to paste,
 381    and set the sensitivity of the Paste action accordingly.
 382  */
 383 static void
 384 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
 385 {
 386   gint i;
 387   gboolean compatible_target = FALSE;
 388   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
 389
 390   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
 391     {
 392       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
 393       if ( gtk_clipboard_wait_is_target_available (clip, atom))
 394         {
 395           compatible_target = TRUE;
 396           break;
 397         }
 398     }
 399
 400   g_object_set (sw->edit_paste, "enabled", compatible_target, NULL);
 401 }
 402
 403
 404 \f
 405
 406 /* Parse and execute all the text in the buffer */
 407 static void
 408 on_run_all (PsppireSyntaxWindow *se)
 409 {
 410   GtkTextIter begin, end;
 411
 412   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
 413   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 414
 415   editor_execute_syntax (se, begin, end);
 416 }
 417
 418 /* Parse and execute the currently selected text */
 419 static void
 420 on_run_selection (PsppireSyntaxWindow *se)
 421 {
 422   GtkTextIter begin, end;
 423
 424   if ( gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end) )
 425     editor_execute_syntax (se, begin, end);
 426 }
 427
 428
 429 /* Parse and execute the from the current line, to the end of the
 430    buffer */
 431 static void
 432 on_run_to_end (PsppireSyntaxWindow *se)
 433 {
 434   GtkTextIter begin, end;
 435   GtkTextIter here;
 436   gint line;
 437
 438   /* Get the current line */
 439   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 440                                     &here,
 441                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 442                                     );
 443
 444   line = gtk_text_iter_get_line (&here) ;
 445
 446   /* Now set begin and end to the start of this line, and end of buffer
 447      respectively */
 448   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 449   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
 450
 451   editor_execute_syntax (se, begin, end);
 452 }
 453
 454
 455
 456 /* Parse and execute the current line */
 457 static void
 458 on_run_current_line (PsppireSyntaxWindow *se)
 459 {
 460   GtkTextIter begin, end;
 461   GtkTextIter here;
 462   gint line;
 463
 464   /* Get the current line */
 465   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
 466                                     &here,
 467                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
 468                                     );
 469
 470   line = gtk_text_iter_get_line (&here) ;
 471
 472   /* Now set begin and end to the start of this line, and start of
 473      following line respectively */
 474   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
 475   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
 476
 477   editor_execute_syntax (se, begin, end);
 478 }
 479
 480
 481
 482 /* Append ".sps" to FILENAME if necessary.
 483    The returned result must be freed when no longer required.
 484  */
 485 static gchar *
 486 append_suffix (const gchar *filename)
 487 {
 488   if ( ! g_str_has_suffix (filename, ".sps" ) &&
 489        ! g_str_has_suffix (filename, ".SPS" ) )
 490     {
 491       return g_strdup_printf ("%s.sps", filename);
 492     }
 493
 494   return xstrdup (filename);
 495 }
 496
 497 /*
 498   Save BUFFER to the file called FILENAME.
 499   FILENAME must be encoded in Glib filename encoding.
 500   If successful, clears the buffer's modified flag.
 501 */
 502 static gboolean
 503 save_editor_to_file (PsppireSyntaxWindow *se,
 504                      const gchar *filename,
 505                      GError **err)
 506 {
 507   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
 508   struct substring text_locale;
 509   gboolean result ;
 510   GtkTextIter start, stop;
 511   gchar *text;
 512
 513   gchar *suffixedname;
 514   g_assert (filename);
 515
 516   suffixedname = append_suffix (filename);
 517
 518   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
 519   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
 520
 521   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
 522
 523   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
 524                                        NULL);
 525
 526   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
 527                                  ss_length (text_locale), err);
 528
 529   ss_dealloc (&text_locale);
 530   g_free (suffixedname);
 531
 532   if ( result )
 533     {
 534       char *fn = g_filename_display_name (filename);
 535       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
 536       g_free (fn);
 537       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
 538       gtk_text_buffer_set_modified (buffer, FALSE);
 539       g_free (msg);
 540     }
 541
 542   return result;
 543 }
 544
 545
 546 /* PsppireWindow 'pick_Filename' callback. */
 547 static void
 548 syntax_pick_filename (PsppireWindow *window)
 549 {
 550   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
 551   const char *default_encoding;
 552   GtkFileFilter *filter;
 553   gint response;
 554
 555   GtkWidget *dialog =
 556     gtk_file_chooser_dialog_new (_("Save Syntax"),
 557                                  GTK_WINDOW (se),
 558                                  GTK_FILE_CHOOSER_ACTION_SAVE,
 559                                  _("Cancel"), GTK_RESPONSE_CANCEL,
 560                                  _("Save"),   GTK_RESPONSE_ACCEPT,
 561                                  NULL);
 562
 563   g_object_set (dialog, "local-only", FALSE, NULL);
 564
 565   filter = gtk_file_filter_new ();
 566   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
 567   gtk_file_filter_add_pattern (filter, "*.sps");
 568   gtk_file_filter_add_pattern (filter, "*.SPS");
 569   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 570
 571   filter = gtk_file_filter_new ();
 572   gtk_file_filter_set_name (filter, _("All Files"));
 573   gtk_file_filter_add_pattern (filter, "*");
 574   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 575
 576   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
 577                                                   TRUE);
 578
 579   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
 580   gtk_file_chooser_set_extra_widget (
 581     GTK_FILE_CHOOSER (dialog),
 582     psppire_encoding_selector_new (default_encoding, false));
 583
 584   response = gtk_dialog_run (GTK_DIALOG (dialog));
 585
 586   if ( response == GTK_RESPONSE_ACCEPT )
 587     {
 588       gchar *encoding;
 589       char *filename;
 590
 591       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog) );
 592       psppire_window_set_filename (window, filename);
 593       free (filename);
 594
 595       encoding = psppire_encoding_selector_get_encoding (
 596         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
 597       if (encoding != NULL)
 598         {
 599           g_free (se->encoding);
 600           se->encoding = encoding;
 601         }
 602     }
 603
 604   gtk_widget_destroy (dialog);
 605 }
 606
 607
 608 /* PsppireWindow 'save' callback. */
 609 static void
 610 syntax_save (PsppireWindow *se)
 611 {
 612   const gchar *filename = psppire_window_get_filename (se);
 613   GError *err = NULL;
 614   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
 615   if ( err )
 616     {
 617       msg (ME, "%s", err->message);
 618       g_error_free (err);
 619     }
 620 }
 621
 622
 623 static void
 624 load_and_show_syntax_window (GtkWidget *se, const gchar *filename,
 625                              const gchar *encoding)
 626 {
 627   gboolean ok;
 628
 629   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 630   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename, encoding, NULL);
 631   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
 632
 633   if (ok )
 634     gtk_widget_show (se);
 635   else
 636     gtk_widget_destroy (se);
 637 }
 638
 639 void
 640 create_syntax_window (void)
 641 {
 642   GtkWidget *w = psppire_syntax_window_new (NULL);
 643
 644   gtk_widget_show (w);
 645 }
 646
 647 GtkWindow *
 648 open_syntax_window (const char *file_name, const gchar *encoding)
 649 {
 650   GtkWidget *se = psppire_syntax_window_new (NULL);
 651
 652   if ( file_name)
 653     load_and_show_syntax_window (se, file_name, encoding);
 654
 655   return GTK_WINDOW (se);
 656 }
 657
 658
 659
 660 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
 661
 662 static void
 663 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
 664 {
 665   if (gtk_text_buffer_get_modified (buffer))
 666     psppire_window_set_unsaved (window);
 667 }
 668
 669 static void undo_redo_update (PsppireSyntaxWindow *window);
 670 static void undo_last_edit (PsppireSyntaxWindow *window);
 671 static void redo_last_edit (PsppireSyntaxWindow *window);
 672
 673 static void
 674 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 675 {
 676   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
 677   undo_redo_update (window);
 678 }
 679
 680 static void
 681 psppire_syntax_window_init (PsppireSyntaxWindow *window)
 682 {
 683   GtkBuilder *xml = builder_new ("syntax-editor.ui");
 684   GtkWidget *box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
 685
 686   GObject *menu = get_object_assert (xml, "syntax-window-menu", G_TYPE_MENU);
 687   GtkWidget *menubar = gtk_menu_bar_new_from_model (G_MENU_MODEL (menu));
 688
 689   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 690
 691   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
 692
 693   PsppireSyntaxWindowClass *class
 694     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
 695
 696   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
 697   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
 698
 699   window->print_settings = NULL;
 700
 701   window->undo_menuitem = g_simple_action_new ("undo", NULL);
 702   window->redo_menuitem = g_simple_action_new ("redo", NULL);
 703
 704   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->undo_menuitem));
 705   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->redo_menuitem));
 706
 707
 708   if (class->lan)
 709     window->buffer = gtk_source_buffer_new_with_language (class->lan);
 710   else
 711     window->buffer = gtk_source_buffer_new (NULL);
 712
 713   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
 714
 715   g_object_set (window->buffer,
 716                 "highlight-matching-brackets", TRUE,
 717                 NULL);
 718
 719   g_object_set (text_view,
 720                 "show-line-numbers", TRUE,
 721                 "show-line-marks", TRUE,
 722                 "auto-indent", TRUE,
 723                 "indent-width", 4,
 724                 "highlight-current-line", TRUE,
 725                 NULL);
 726
 727   window->encoding = NULL;
 728
 729   window->cliptext = NULL;
 730   window->dispose_has_run = FALSE;
 731
 732
 733   window->edit_delete = g_simple_action_new ("delete", NULL);
 734   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_delete));
 735
 736   window->edit_copy = g_simple_action_new ("copy", NULL);
 737   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_copy));
 738
 739   window->edit_cut = g_simple_action_new ("cut", NULL);
 740   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_cut));
 741
 742   window->edit_paste = g_simple_action_new ("paste", NULL);
 743   g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (window->edit_paste));
 744
 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
 758   {
 759     GSimpleAction *print = g_simple_action_new ("print", NULL);
 760
 761     g_signal_connect_swapped (print, "activate",
 762                               G_CALLBACK (psppire_syntax_window_print), window);
 763
 764     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (print));
 765   }
 766
 767   g_signal_connect_swapped (window->undo_menuitem,
 768                             "activate",
 769                             G_CALLBACK (undo_last_edit),
 770                             window);
 771
 772   g_signal_connect_swapped (window->redo_menuitem,
 773                             "activate",
 774                             G_CALLBACK (redo_last_edit),
 775                             window);
 776
 777   undo_redo_update (window);
 778
 779
 780   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change",
 781                                                    G_CALLBACK (selection_changed), window);
 782
 783   window->ps_handler = g_signal_connect (clip_selection, "owner-change",
 784                                           G_CALLBACK (set_paste_sensitivity), window);
 785
 786   connect_help (xml);
 787
 788   gtk_container_add (GTK_CONTAINER (window), box);
 789
 790   g_object_ref (sw);
 791
 792   g_object_ref (window->sb);
 793
 794   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
 795   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
 796   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
 797
 798   gtk_widget_show_all (box);
 799
 800   GtkApplication *app = GTK_APPLICATION (g_application_get_default ());
 801
 802   {
 803     GSimpleAction *open = g_simple_action_new ("open", NULL);
 804
 805     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (open));
 806
 807     g_signal_connect_swapped (open,
 808                               "activate",
 809                               G_CALLBACK (psppire_window_open),
 810                               window);
 811   }
 812
 813   {
 814     GSimpleAction *save = g_simple_action_new ("save", NULL);
 815
 816     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (save));
 817
 818     g_signal_connect_swapped (save,
 819                               "activate",
 820                               G_CALLBACK (psppire_window_save),
 821                               window);
 822
 823     const gchar *accels[2] = { "<Ctrl>S", NULL};
 824     gtk_application_set_accels_for_action (app,
 825                                            "win.save",
 826                                            accels);
 827
 828   }
 829
 830   {
 831     GSimpleAction *save_as = g_simple_action_new ("save_as", NULL);
 832
 833     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (save_as));
 834
 835     g_signal_connect_swapped (save_as,
 836                               "activate",
 837                               G_CALLBACK (psppire_window_save_as),
 838                               window);
 839
 840
 841     const gchar *accels[2] = { "<Shift><Ctrl>S", NULL};
 842     gtk_application_set_accels_for_action (app,
 843                                            "win.save_as",
 844                                            accels);
 845
 846
 847   }
 848
 849
 850   g_signal_connect_swapped (window->edit_delete,
 851                     "activate",
 852                     G_CALLBACK (on_edit_delete),
 853                     window);
 854
 855   g_signal_connect_swapped (window->edit_copy,
 856                     "activate",
 857                     G_CALLBACK (on_edit_copy),
 858                     window);
 859
 860   g_signal_connect_swapped (window->edit_cut,
 861                     "activate",
 862                     G_CALLBACK (on_edit_cut),
 863                     window);
 864
 865   g_signal_connect_swapped (window->edit_paste,
 866                     "activate",
 867                     G_CALLBACK (on_edit_paste),
 868                     window);
 869
 870   {
 871     GSimpleAction *run_all = g_simple_action_new ("run-all", NULL);
 872
 873     g_signal_connect_swapped (run_all, "activate",
 874                               G_CALLBACK (on_run_all), window);
 875
 876     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_all));
 877   }
 878
 879   {
 880     GSimpleAction *run_current_line = g_simple_action_new ("run-current-line", NULL);
 881
 882     g_signal_connect_swapped (run_current_line, "activate",
 883                               G_CALLBACK (on_run_current_line), window);
 884
 885     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_current_line));
 886
 887     GtkApplication *app = GTK_APPLICATION (g_application_get_default ());
 888     const gchar *accels[2] = { "<Ctrl>R", NULL};
 889     gtk_application_set_accels_for_action (app,
 890                                            "win.run-current-line",
 891                                            accels);
 892   }
 893
 894   {
 895     GSimpleAction *run_selection = g_simple_action_new ("run-selection", NULL);
 896
 897     g_signal_connect_swapped (run_selection, "activate",
 898                               G_CALLBACK (on_run_selection), window);
 899
 900     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_selection));
 901   }
 902
 903   {
 904     GSimpleAction *run_to_end = g_simple_action_new ("run-to-end", NULL);
 905
 906     g_signal_connect_swapped (run_to_end, "activate",
 907                               G_CALLBACK (on_run_to_end), window);
 908
 909     g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (run_to_end));
 910   }
 911
 912   gtk_menu_shell_append (GTK_MENU_SHELL (menubar),
 913                          create_windows_menu (GTK_WINDOW (window)));
 914
 915   gtk_menu_shell_append (GTK_MENU_SHELL (menubar),
 916                          create_help_menu (GTK_WINDOW (window)));
 917
 918   g_object_unref (xml);
 919 }
 920
 921
 922
 923
 924
 925 GtkWidget *
 926 psppire_syntax_window_new (const char *encoding)
 927 {
 928   GObject *sw = g_object_new (psppire_syntax_window_get_type (),
 929                               "description", _("Syntax Editor"),
 930                               "encoding", encoding,
 931                               NULL);
 932
 933   GApplication *app = g_application_get_default ();
 934   gtk_application_add_window (GTK_APPLICATION (app), GTK_WINDOW (sw));
 935
 936   return GTK_WIDGET (sw);
 937 }
 938
 939 static void
 940 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
 941 {
 942   gchar *fn = g_filename_display_basename (filename);
 943
 944   GtkWidget *dialog =
 945     gtk_message_dialog_new (w,
 946                             GTK_DIALOG_DESTROY_WITH_PARENT,
 947                             GTK_MESSAGE_ERROR,
 948                             GTK_BUTTONS_CLOSE,
 949                             _("Cannot load syntax file `%s'"),
 950                             fn);
 951
 952   g_free (fn);
 953
 954   g_object_set (dialog, "icon-name", "pspp", NULL);
 955
 956   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 957                                             "%s", err->message);
 958
 959   gtk_dialog_run (GTK_DIALOG (dialog));
 960
 961   gtk_widget_destroy (dialog);
 962 }
 963
 964 /*
 965   Loads the buffer from the file called FILENAME
 966 */
 967 gboolean
 968 syntax_load (PsppireWindow *window, const gchar *filename,
 969              const gchar *encoding, gpointer not_used)
 970 {
 971   GError *err = NULL;
 972   gchar *text_locale = NULL;
 973   gchar *text_utf8 = NULL;
 974   gsize len_locale = -1;
 975   gsize len_utf8 = -1;
 976   GtkTextIter iter;
 977   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
 978   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
 979
 980   /* FIXME: What if it's a very big file ? */
 981   if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
 982     {
 983       error_dialog (GTK_WINDOW (window), filename, err);
 984       g_clear_error (&err);
 985       return FALSE;
 986     }
 987
 988   if (!encoding || !encoding[0])
 989     {
 990       /* Determine the file's encoding and update sw->encoding.  (The ordering
 991          is important here because encoding_guess_whole_file() often returns
 992          its argument instead of a copy of it.) */
 993       char *guessed_encoding;
 994
 995       guessed_encoding = g_strdup (encoding_guess_whole_file (sw->encoding,
 996                                                               text_locale,
 997                                                               len_locale));
 998       g_free (sw->encoding);
 999       sw->encoding = guessed_encoding;
1000     }
1001   else
1002     {
1003       g_free (sw->encoding);
1004       sw->encoding = g_strdup (encoding);
1005     }
1006
1007   text_utf8 = recode_substring_pool ("UTF-8", sw->encoding,
1008                                      ss_buffer (text_locale, len_locale),
1009                                      NULL).string;
1010   free (text_locale);
1011
1012   if ( text_utf8 == NULL )
1013     {
1014       error_dialog (GTK_WINDOW (window), filename, err);
1015       g_clear_error (&err);
1016       return FALSE;
1017     }
1018
1019   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
1020
1021   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
1022
1023   gtk_text_buffer_set_modified (buffer, FALSE);
1024
1025   free (text_utf8);
1026
1027   add_most_recent (filename, "text/x-spss-syntax", sw->encoding);
1028
1029   return TRUE;
1030 }
1031
1032 \f
1033
1034 static void
1035 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1036 {
1037   iface->save = syntax_save;
1038   iface->pick_filename = syntax_pick_filename;
1039   iface->load = syntax_load;
1040 }
1041
1042
1043 \f
1044
1045 static void
1046 undo_redo_update (PsppireSyntaxWindow *window)
1047 {
1048   g_object_set (window->undo_menuitem, "enabled",
1049                 gtk_source_buffer_can_undo (window->buffer), NULL);
1050
1051   g_object_set  (window->redo_menuitem, "enabled",
1052                  gtk_source_buffer_can_redo (window->buffer), NULL);
1053 }
1054
1055 static void
1056 undo_last_edit (PsppireSyntaxWindow *window)
1057 {
1058   gtk_source_buffer_undo (window->buffer);
1059   undo_redo_update (window);
1060 }
1061
1062 static void
1063 redo_last_edit (PsppireSyntaxWindow *window)
1064 {
1065   gtk_source_buffer_redo (window->buffer);
1066   undo_redo_update (window);
1067 }
1068
1069
1070 \f
1071 /* Printing related stuff */
1072
1073
1074 static void
1075 begin_print (GtkPrintOperation *operation,
1076           GtkPrintContext   *context,
1077           PsppireSyntaxWindow *window)
1078 {
1079   window->compositor =
1080     gtk_source_print_compositor_new (window->buffer);
1081 }
1082
1083
1084 static void
1085 end_print (GtkPrintOperation *operation,
1086           GtkPrintContext   *context,
1087           PsppireSyntaxWindow *window)
1088 {
1089   g_object_unref (window->compositor);
1090   window->compositor = NULL;
1091 }
1092
1093
1094
1095 static gboolean
1096 paginate (GtkPrintOperation *operation,
1097           GtkPrintContext   *context,
1098           PsppireSyntaxWindow *window)
1099 {
1100   if (gtk_source_print_compositor_paginate (window->compositor, context))
1101     {
1102       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1103       gtk_print_operation_set_n_pages (operation, n_pages);
1104
1105       return TRUE;
1106     }
1107
1108   return FALSE;
1109 }
1110
1111 static void
1112 draw_page (GtkPrintOperation *operation,
1113            GtkPrintContext   *context,
1114            gint               page_nr,
1115           PsppireSyntaxWindow *window)
1116 {
1117   gtk_source_print_compositor_draw_page (window->compositor,
1118                                          context,
1119                                          page_nr);
1120 }
1121
1122
1123
1124 static void
1125 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1126 {
1127   GtkPrintOperationResult res;
1128
1129   GtkPrintOperation *print = gtk_print_operation_new ();
1130
1131   if (window->print_settings != NULL)
1132     gtk_print_operation_set_print_settings (print, window->print_settings);
1133
1134
1135   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1136   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1137   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1138   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1139
1140   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1141                                  GTK_WINDOW (window), NULL);
1142
1143   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1144     {
1145       if (window->print_settings != NULL)
1146         g_object_unref (window->print_settings);
1147       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1148     }
1149
1150   g_object_unref (print);
1151 }