Merge remote branch 'origin/master' into import-gui
[pspp] / src / ui / gui / psppire-syntax-window.c
1 /* PSPPIRE - a graphical user interface for PSPP.
2    Copyright (C) 2008, 2009, 2010, 2011, 2012  Free Software Foundation
3
4    This program is free software: you can redistribute it and/or modify
5    it under the terms of the GNU General Public License as published by
6    the Free Software Foundation, either version 3 of the License, or
7    (at your option) any later version.
8
9    This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU General Public License for more details.
13
14    You should have received a copy of the GNU General Public License
15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 #include <gtk/gtk.h>
20 #include <stdlib.h>
21
22 #include <gtksourceview/gtksourcebuffer.h>
23 #include <gtksourceview/gtksourcelanguage.h>
24 #include <gtksourceview/gtksourcelanguagemanager.h>
25 #include <gtksourceview/gtksourceprintcompositor.h>
26
27 #include "language/lexer/lexer.h"
28 #include "libpspp/encoding-guesser.h"
29 #include "libpspp/i18n.h"
30 #include "libpspp/message.h"
31 #include "ui/gui/executor.h"
32 #include "ui/gui/help-menu.h"
33 #include "ui/gui/helper.h"
34 #include "ui/gui/builder-wrapper.h"
35 #include "ui/gui/psppire-data-window.h"
36 #include "ui/gui/psppire-encoding-selector.h"
37 #include "ui/gui/psppire-lex-reader.h"
38 #include "ui/gui/psppire-syntax-window.h"
39 #include "ui/gui/psppire-window-register.h"
40 #include "ui/gui/psppire.h"
41
42 #include "gl/localcharset.h"
43 #include "gl/xalloc.h"
44 #include "gl/xvasprintf.h"
45
46 #include <gettext.h>
47 #define _(msgid) gettext (msgid)
48 #define N_(msgid) msgid
49
50 static void psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *, gpointer);
51 static void psppire_syntax_window_base_init     (PsppireSyntaxWindowClass *class);
52 static void psppire_syntax_window_class_init    (PsppireSyntaxWindowClass *class);
53 static void psppire_syntax_window_init          (PsppireSyntaxWindow      *syntax_editor);
54
55
56 static void psppire_syntax_window_iface_init (PsppireWindowIface *iface);
57
58
59 /* Properties */
60 enum
61 {
62   PROP_0,
63   PROP_ENCODING
64 };
65
66 static void
67 psppire_syntax_window_set_property (GObject         *object,
68                                     guint            prop_id,
69                                     const GValue    *value,
70                                     GParamSpec      *pspec)
71 {
72   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
73
74   switch (prop_id)
75     {
76     case PROP_ENCODING:
77       g_free (window->encoding);
78       window->encoding = g_value_dup_string (value);
79       break;
80     default:
81       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
82       break;
83     };
84 }
85
86
87 static void
88 psppire_syntax_window_get_property (GObject         *object,
89                                     guint            prop_id,
90                                     GValue          *value,
91                                     GParamSpec      *pspec)
92 {
93   PsppireSyntaxWindow *window = PSPPIRE_SYNTAX_WINDOW (object);
94
95   switch (prop_id)
96     {
97     case PROP_ENCODING:
98       g_value_set_string (value, window->encoding);
99       break;
100     default:
101       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
102       break;
103     };
104 }
105
106 GType
107 psppire_syntax_window_get_type (void)
108 {
109   static GType psppire_syntax_window_type = 0;
110
111   if (!psppire_syntax_window_type)
112     {
113       static const GTypeInfo psppire_syntax_window_info =
114       {
115         sizeof (PsppireSyntaxWindowClass),
116         (GBaseInitFunc) psppire_syntax_window_base_init,
117         (GBaseFinalizeFunc) psppire_syntax_window_base_finalize,
118         (GClassInitFunc)psppire_syntax_window_class_init,
119         (GClassFinalizeFunc) NULL,
120         NULL,
121         sizeof (PsppireSyntaxWindow),
122         0,
123         (GInstanceInitFunc) psppire_syntax_window_init,
124       };
125
126       static const GInterfaceInfo window_interface_info =
127         {
128           (GInterfaceInitFunc) psppire_syntax_window_iface_init,
129           NULL,
130           NULL
131         };
132
133       psppire_syntax_window_type =
134         g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireSyntaxWindow",
135                                 &psppire_syntax_window_info, 0);
136
137       g_type_add_interface_static (psppire_syntax_window_type,
138                                    PSPPIRE_TYPE_WINDOW_MODEL,
139                                    &window_interface_info);
140     }
141
142   return psppire_syntax_window_type;
143 }
144
145 static GObjectClass *parent_class ;
146
147 static void
148 psppire_syntax_window_finalize (GObject *object)
149 {
150   if (G_OBJECT_CLASS (parent_class)->finalize)
151     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
152 }
153
154
155 static void
156 psppire_syntax_window_dispose (GObject *obj)
157 {
158   PsppireSyntaxWindow *sw = (PsppireSyntaxWindow *)obj;
159
160   GtkClipboard *clip_selection;
161   GtkClipboard *clip_primary;
162
163   if (sw->dispose_has_run)
164     return;
165
166   g_free (sw->encoding);
167   sw->encoding = NULL;
168
169   clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
170   clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_PRIMARY);
171
172   g_signal_handler_disconnect (clip_primary, sw->sel_handler);
173
174   g_signal_handler_disconnect (clip_selection, sw->ps_handler);
175
176   /* Make sure dispose does not run twice. */
177   sw->dispose_has_run = TRUE;
178
179   /* Chain up to the parent class */
180   G_OBJECT_CLASS (parent_class)->dispose (obj);
181 }
182
183
184
185 static void
186 psppire_syntax_window_class_init (PsppireSyntaxWindowClass *class)
187 {
188   GParamSpec *encoding_spec;
189   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
190
191   GtkSourceLanguageManager *lm = gtk_source_language_manager_get_default ();
192
193   const gchar * const *existing_paths =  gtk_source_language_manager_get_search_path (lm);
194   gchar **new_paths = g_strdupv ((gchar **)existing_paths);
195   int n = g_strv_length ((gchar **) existing_paths);
196
197   new_paths = g_realloc (new_paths, (n + 2) * sizeof (*new_paths));
198   new_paths[n] = g_strdup (relocate (PKGDATADIR));
199   new_paths[n+1] = NULL;
200
201   lm = gtk_source_language_manager_new ();
202   gtk_source_language_manager_set_search_path (lm, new_paths);
203
204   class->lan = gtk_source_language_manager_get_language (lm, "pspp");
205
206   if (class->lan == NULL)
207     g_warning ("pspp.lang file not found.  Syntax highlighting will not be available.");
208
209   parent_class = g_type_class_peek_parent (class);
210
211   g_strfreev (new_paths);
212
213   encoding_spec =
214     null_if_empty_param ("encoding",
215                          "Character encoding",
216                          "IANA character encoding in this syntax file",
217                          NULL,
218                          G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
219
220   parent_class = g_type_class_peek_parent (class);
221
222   gobject_class->set_property = psppire_syntax_window_set_property;
223   gobject_class->get_property = psppire_syntax_window_get_property;
224   gobject_class->dispose = psppire_syntax_window_dispose;
225
226   g_object_class_install_property (gobject_class,
227                                    PROP_ENCODING,
228                                    encoding_spec);
229 }
230
231
232 static void
233 psppire_syntax_window_base_init (PsppireSyntaxWindowClass *class)
234 {
235   GObjectClass *object_class = G_OBJECT_CLASS (class);
236   object_class->finalize = psppire_syntax_window_finalize;
237 }
238
239
240
241 static void
242 psppire_syntax_window_base_finalize (PsppireSyntaxWindowClass *class,
243                                      gpointer class_data)
244 {
245 }
246
247
248 static void
249 editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
250                        GtkTextIter stop)
251 {
252   PsppireWindow *win = PSPPIRE_WINDOW (sw);
253   struct lex_reader *reader = lex_reader_for_gtk_text_buffer (GTK_TEXT_BUFFER (sw->buffer), start, stop);
254
255   lex_reader_set_file_name (reader, psppire_window_get_filename (win));
256
257   execute_syntax (psppire_default_data_window (), reader);
258 }
259 \f
260 /* Delete the currently selected text */
261 static void
262 on_edit_delete (PsppireSyntaxWindow *sw)
263 {
264   GtkTextIter begin, end;
265   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
266   
267   if ( gtk_text_buffer_get_selection_bounds (buffer, &begin, &end) )
268     gtk_text_buffer_delete (buffer, &begin, &end);
269 }
270
271
272 /* The syntax editor's clipboard deals only with text */
273 enum {
274   SELECT_FMT_NULL,
275   SELECT_FMT_TEXT,
276 };
277
278
279 static void
280 selection_changed (PsppireSyntaxWindow *sw)
281 {
282   gboolean sel = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (sw->buffer));
283
284   gtk_action_set_sensitive (sw->edit_copy, sel);
285   gtk_action_set_sensitive (sw->edit_cut, sel);
286   gtk_action_set_sensitive (sw->edit_delete, sel);
287 }
288
289 /* The callback which runs when something request clipboard data */
290 static void
291 clipboard_get_cb (GtkClipboard     *clipboard,
292                   GtkSelectionData *selection_data,
293                   guint             info,
294                   gpointer          data)
295 {
296   PsppireSyntaxWindow *sw = data;
297   g_assert (info == SELECT_FMT_TEXT);
298
299   gtk_selection_data_set (selection_data, selection_data->target,
300                           8,
301                           (const guchar *) sw->cliptext, strlen (sw->cliptext));
302
303 }
304
305 static void
306 clipboard_clear_cb (GtkClipboard *clipboard,
307                     gpointer data)
308 {
309   PsppireSyntaxWindow *sw = data;
310   g_free (sw->cliptext);
311   sw->cliptext = NULL;
312 }
313
314
315 static const GtkTargetEntry targets[] = {
316   { "UTF8_STRING",   0, SELECT_FMT_TEXT },
317   { "STRING",        0, SELECT_FMT_TEXT },
318   { "TEXT",          0, SELECT_FMT_TEXT },
319   { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
320   { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
321   { "text/plain",    0, SELECT_FMT_TEXT },
322 };
323
324
325 /*
326   Store a clip containing the currently selected text.
327   Returns true iff something was set.
328   As a side effect, begin and end will be set to indicate
329   the limits of the selected text.
330 */
331 static gboolean
332 set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
333 {
334   GtkClipboard *clipboard ;
335   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
336
337   if ( ! gtk_text_buffer_get_selection_bounds (buffer, begin, end) )
338     return FALSE;
339
340   g_free (sw->cliptext);
341   sw->cliptext = gtk_text_buffer_get_text  (buffer, begin, end, FALSE);
342
343   clipboard =
344     gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
345
346   if (!gtk_clipboard_set_with_owner (clipboard, targets,
347                                      G_N_ELEMENTS (targets),
348                                      clipboard_get_cb, clipboard_clear_cb,
349                                      G_OBJECT (sw)))
350     clipboard_clear_cb (clipboard, sw);
351
352   return TRUE;
353 }
354
355 static void
356 on_edit_cut (PsppireSyntaxWindow *sw)
357 {
358   GtkTextIter begin, end;
359   
360   if ( set_clip (sw, &begin, &end))
361     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sw->buffer), &begin, &end);
362 }
363
364 static void
365 on_edit_copy (PsppireSyntaxWindow *sw)
366 {
367   GtkTextIter begin, end;
368
369   set_clip (sw, &begin, &end);
370 }
371
372
373 /* A callback for when the clipboard contents have been received */
374 static void
375 contents_received_callback (GtkClipboard *clipboard,
376                             GtkSelectionData *sd,
377                             gpointer data)
378 {
379   PsppireSyntaxWindow *syntax_window = data;
380
381   if ( sd->length < 0 )
382     return;
383
384   if ( sd->type != gdk_atom_intern ("UTF8_STRING", FALSE))
385     return;
386
387   gtk_text_buffer_insert_at_cursor (GTK_TEXT_BUFFER (syntax_window->buffer),
388                                     (gchar *) sd->data,
389                                     sd->length);
390
391 }
392
393 static void
394 on_edit_paste (PsppireSyntaxWindow *sw)
395 {
396   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (sw));
397   GtkClipboard *clipboard =
398     gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
399
400   gtk_clipboard_request_contents (clipboard,
401                                   gdk_atom_intern ("UTF8_STRING", TRUE),
402                                   contents_received_callback,
403                                   sw);
404 }
405
406
407 /* Check to see if CLIP holds a target which we know how to paste,
408    and set the sensitivity of the Paste action accordingly.
409  */
410 static void
411 set_paste_sensitivity (GtkClipboard *clip, GdkEventOwnerChange *event, gpointer data)
412 {
413   gint i;
414   gboolean compatible_target = FALSE;
415   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (data);
416
417   for (i = 0 ; i < sizeof (targets) / sizeof (targets[0]) ; ++i)
418     {
419       GdkAtom atom = gdk_atom_intern (targets[i].target, TRUE);
420       if ( gtk_clipboard_wait_is_target_available (clip, atom))
421         {
422           compatible_target = TRUE;
423           break;
424         }
425     }
426
427   gtk_action_set_sensitive (sw->edit_paste, compatible_target);
428 }
429
430
431 \f
432
433 /* Parse and execute all the text in the buffer */
434 static void
435 on_run_all (GtkMenuItem *menuitem, gpointer user_data)
436 {
437   GtkTextIter begin, end;
438   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
439
440   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &begin, 0);
441   gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (se->buffer), &end, -1);
442
443   editor_execute_syntax (se, begin, end);
444 }
445
446 /* Parse and execute the currently selected text */
447 static void
448 on_run_selection (GtkMenuItem *menuitem, gpointer user_data)
449 {
450   GtkTextIter begin, end;
451   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
452
453   if ( gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (se->buffer), &begin, &end) )
454     editor_execute_syntax (se, begin, end);
455 }
456
457
458 /* Parse and execute the from the current line, to the end of the
459    buffer */
460 static void
461 on_run_to_end (GtkMenuItem *menuitem, gpointer user_data)
462 {
463   GtkTextIter begin, end;
464   GtkTextIter here;
465   gint line;
466
467   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
468
469   /* Get the current line */
470   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
471                                     &here,
472                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
473                                     );
474
475   line = gtk_text_iter_get_line (&here) ;
476
477   /* Now set begin and end to the start of this line, and end of buffer
478      respectively */
479   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
480   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, -1);
481
482   editor_execute_syntax (se, begin, end);
483 }
484
485
486
487 /* Parse and execute the current line */
488 static void
489 on_run_current_line (GtkMenuItem *menuitem, gpointer user_data)
490 {
491   GtkTextIter begin, end;
492   GtkTextIter here;
493   gint line;
494
495   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (user_data);
496
497   /* Get the current line */
498   gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (se->buffer),
499                                     &here,
500                                     gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (se->buffer))
501                                     );
502
503   line = gtk_text_iter_get_line (&here) ;
504
505   /* Now set begin and end to the start of this line, and start of
506      following line respectively */
507   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &begin, line);
508   gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (se->buffer), &end, line + 1);
509
510   editor_execute_syntax (se, begin, end);
511 }
512
513
514
515 /* Append ".sps" to FILENAME if necessary.
516    The returned result must be freed when no longer required.
517  */
518 static gchar *
519 append_suffix (const gchar *filename)
520 {
521   if ( ! g_str_has_suffix (filename, ".sps" ) &&
522        ! g_str_has_suffix (filename, ".SPS" ) )
523     {
524       return g_strdup_printf ("%s.sps", filename);
525     }
526
527   return xstrdup (filename);
528 }
529
530 /*
531   Save BUFFER to the file called FILENAME.
532   FILENAME must be encoded in Glib filename encoding.
533   If successful, clears the buffer's modified flag.
534 */
535 static gboolean
536 save_editor_to_file (PsppireSyntaxWindow *se,
537                      const gchar *filename,
538                      GError **err)
539 {
540   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (se->buffer);
541   struct substring text_locale;
542   gboolean result ;
543   GtkTextIter start, stop;
544   gchar *text;
545
546   gchar *suffixedname;
547   g_assert (filename);
548
549   suffixedname = append_suffix (filename);
550
551   gtk_text_buffer_get_iter_at_line (buffer, &start, 0);
552   gtk_text_buffer_get_iter_at_offset (buffer, &stop, -1);
553
554   text = gtk_text_buffer_get_text (buffer, &start, &stop, FALSE);
555
556   text_locale = recode_substring_pool (se->encoding, "UTF-8", ss_cstr (text),
557                                        NULL);
558
559   result =  g_file_set_contents (suffixedname, ss_data (text_locale),
560                                  ss_length (text_locale), err);
561
562   ss_dealloc (&text_locale);
563   g_free (suffixedname);
564
565   if ( result )
566     {
567       char *fn = g_filename_display_name (filename);
568       gchar *msg = g_strdup_printf (_("Saved file `%s'"), fn);
569       g_free (fn);
570       gtk_statusbar_push (GTK_STATUSBAR (se->sb), se->text_context, msg);
571       gtk_text_buffer_set_modified (buffer, FALSE);
572       g_free (msg);
573     }
574
575   return result;
576 }
577
578
579 /* PsppireWindow 'pick_Filename' callback. */
580 static void
581 syntax_pick_filename (PsppireWindow *window)
582 {
583   PsppireSyntaxWindow *se = PSPPIRE_SYNTAX_WINDOW (window);
584   const char *default_encoding;
585   GtkFileFilter *filter;
586   gint response;
587
588   GtkWidget *dialog =
589     gtk_file_chooser_dialog_new (_("Save Syntax"),
590                                  GTK_WINDOW (se),
591                                  GTK_FILE_CHOOSER_ACTION_SAVE,
592                                  GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
593                                  GTK_STOCK_SAVE,   GTK_RESPONSE_ACCEPT,
594                                  NULL);
595
596   g_object_set (dialog, "local-only", FALSE, NULL);
597
598   filter = gtk_file_filter_new ();
599   gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
600   gtk_file_filter_add_pattern (filter, "*.sps");
601   gtk_file_filter_add_pattern (filter, "*.SPS");
602   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
603
604   filter = gtk_file_filter_new ();
605   gtk_file_filter_set_name (filter, _("All Files"));
606   gtk_file_filter_add_pattern (filter, "*");
607   gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
608
609   gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
610                                                   TRUE);
611
612   default_encoding = se->encoding != NULL ? se->encoding : locale_charset ();
613   gtk_file_chooser_set_extra_widget (
614     GTK_FILE_CHOOSER (dialog),
615     psppire_encoding_selector_new (default_encoding, false));
616
617   response = gtk_dialog_run (GTK_DIALOG (dialog));
618
619   if ( response == GTK_RESPONSE_ACCEPT )
620     {
621       gchar *encoding;
622       char *filename;
623
624       filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog) );
625       psppire_window_set_filename (window, filename);
626       free (filename);
627
628       encoding = psppire_encoding_selector_get_encoding (
629         gtk_file_chooser_get_extra_widget (GTK_FILE_CHOOSER (dialog)));
630       if (encoding != NULL)
631         {
632           g_free (se->encoding);
633           se->encoding = encoding;
634         }
635     }
636
637   gtk_widget_destroy (dialog);
638 }
639
640
641 /* PsppireWindow 'save' callback. */
642 static void
643 syntax_save (PsppireWindow *se)
644 {
645   const gchar *filename = psppire_window_get_filename (se);
646   GError *err = NULL;
647   save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
648   if ( err )
649     {
650       msg (ME, "%s", err->message);
651       g_error_free (err);
652     }
653 }
654
655
656 /* Callback for the File->Quit menuitem */
657 static gboolean
658 on_quit (GtkMenuItem *menuitem, gpointer    user_data)
659 {
660   psppire_quit ();
661
662   return FALSE;
663 }
664
665
666 static void
667 load_and_show_syntax_window (GtkWidget *se, const gchar *filename)
668 {
669   gboolean ok;
670
671   gtk_source_buffer_begin_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
672   ok = psppire_window_load (PSPPIRE_WINDOW (se), filename);
673   gtk_source_buffer_end_not_undoable_action (PSPPIRE_SYNTAX_WINDOW (se)->buffer);
674
675   if (ok )
676     gtk_widget_show (se);
677   else
678     gtk_widget_destroy (se);
679 }
680
681 void
682 create_syntax_window (void)
683 {
684   GtkWidget *w = psppire_syntax_window_new (NULL);
685   gtk_widget_show (w);
686 }
687
688 void
689 open_syntax_window (const char *file_name, const gchar *encoding)
690 {
691   GtkWidget *se = psppire_syntax_window_new (encoding);
692
693   if ( file_name)
694     load_and_show_syntax_window (se, file_name);
695 }
696
697
698
699 static void psppire_syntax_window_print (PsppireSyntaxWindow *window);
700
701 static void
702 on_modified_changed (GtkTextBuffer *buffer, PsppireWindow *window)
703 {
704   if (gtk_text_buffer_get_modified (buffer))
705     psppire_window_set_unsaved (window);
706 }
707
708 static void undo_redo_update (PsppireSyntaxWindow *window);
709 static void undo_last_edit (PsppireSyntaxWindow *window);
710 static void redo_last_edit (PsppireSyntaxWindow *window);
711
712 static void
713 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
714 {
715   gtk_statusbar_pop (GTK_STATUSBAR (window->sb), window->text_context);
716   undo_redo_update (window);
717 }
718
719 static void
720 psppire_syntax_window_init (PsppireSyntaxWindow *window)
721 {
722   GtkBuilder *xml = builder_new ("syntax-editor.ui");
723   GtkWidget *box = gtk_vbox_new (FALSE, 0);
724
725   GtkWidget *menubar = get_widget_assert (xml, "menubar");
726   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
727
728   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
729
730   PsppireSyntaxWindowClass *class
731     = PSPPIRE_SYNTAX_WINDOW_CLASS (G_OBJECT_GET_CLASS (window));
732
733   GtkClipboard *clip_selection = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_CLIPBOARD);
734   GtkClipboard *clip_primary =   gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
735
736   window->print_settings = NULL;
737   window->undo_menuitem = get_action_assert (xml, "edit_undo");
738   window->redo_menuitem = get_action_assert (xml, "edit_redo");
739
740   if (class->lan)
741     window->buffer = gtk_source_buffer_new_with_language (class->lan);
742   else
743     window->buffer = gtk_source_buffer_new (NULL);
744
745   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), GTK_TEXT_BUFFER (window->buffer));
746
747   g_object_set (window->buffer,
748                 "highlight-matching-brackets", TRUE,
749                 NULL);
750
751   g_object_set (text_view,
752                 "show-line-numbers", TRUE,
753                 "show-line-marks", TRUE,
754                 "auto-indent", TRUE,
755                 "indent-width", 4,
756                 "highlight-current-line", TRUE,
757                 NULL);
758
759   window->encoding = NULL;
760
761   window->cliptext = NULL;
762   window->dispose_has_run = FALSE;
763
764   window->edit_delete = get_action_assert (xml, "edit_delete");
765   window->edit_copy = get_action_assert (xml, "edit_copy");
766   window->edit_cut = get_action_assert (xml, "edit_cut");
767   window->edit_paste = get_action_assert (xml, "edit_paste");
768
769   window->buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view)));
770
771   window->sb = get_widget_assert (xml, "statusbar2");
772   window->text_context = gtk_statusbar_get_context_id (GTK_STATUSBAR (window->sb), "Text Context");
773
774   g_signal_connect (window->buffer, "changed", 
775                     G_CALLBACK (on_text_changed), window);
776
777   g_signal_connect (window->buffer, "modified-changed", 
778                     G_CALLBACK (on_modified_changed), window);
779
780   g_signal_connect_swapped (get_action_assert (xml, "file_print"), "activate",
781                             G_CALLBACK (psppire_syntax_window_print), window);
782
783
784   g_signal_connect_swapped (window->undo_menuitem,
785                             "activate",
786                             G_CALLBACK (undo_last_edit),
787                             window);
788
789   g_signal_connect_swapped (window->redo_menuitem,
790                             "activate",
791                             G_CALLBACK (redo_last_edit),
792                             window);
793
794   undo_redo_update (window);
795
796   window->sel_handler = g_signal_connect_swapped (clip_primary, "owner-change", 
797                                                    G_CALLBACK (selection_changed), window);
798
799   window->ps_handler = g_signal_connect (clip_selection, "owner-change", 
800                                           G_CALLBACK (set_paste_sensitivity), window);
801
802   connect_help (xml);
803
804   gtk_container_add (GTK_CONTAINER (window), box);
805
806   g_object_ref (menubar);
807
808   g_object_ref (sw);
809
810   g_object_ref (window->sb);
811
812   gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
813   gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
814   gtk_box_pack_start (GTK_BOX (box), window->sb, FALSE, TRUE, 0);
815
816   gtk_widget_show_all (box);
817
818   g_signal_connect_swapped (get_action_assert (xml,"file_new_syntax"), "activate", G_CALLBACK (create_syntax_window), NULL);
819
820   g_signal_connect (get_action_assert (xml,"file_new_data"),
821                     "activate",
822                     G_CALLBACK (create_data_window),
823                     window);
824
825   g_signal_connect_swapped (get_action_assert (xml, "file_open"),
826                     "activate",
827                     G_CALLBACK (psppire_window_open),
828                     window);
829
830   g_signal_connect_swapped (get_action_assert (xml, "file_save"),
831                     "activate",
832                     G_CALLBACK (psppire_window_save),
833                     window);
834
835   g_signal_connect_swapped (get_action_assert (xml, "file_save_as"),
836                     "activate",
837                     G_CALLBACK (psppire_window_save_as),
838                     window);
839
840   g_signal_connect (get_action_assert (xml,"file_quit"),
841                     "activate",
842                     G_CALLBACK (on_quit),
843                     window);
844
845   g_signal_connect_swapped (window->edit_delete,
846                     "activate",
847                     G_CALLBACK (on_edit_delete),
848                     window);
849
850   g_signal_connect_swapped (window->edit_copy,
851                     "activate",
852                     G_CALLBACK (on_edit_copy),
853                     window);
854
855   g_signal_connect_swapped (window->edit_cut,
856                     "activate",
857                     G_CALLBACK (on_edit_cut),
858                     window);
859
860   g_signal_connect_swapped (window->edit_paste,
861                     "activate",
862                     G_CALLBACK (on_edit_paste),
863                     window);
864
865   g_signal_connect (get_action_assert (xml,"run_all"),
866                     "activate",
867                     G_CALLBACK (on_run_all),
868                     window);
869
870   g_signal_connect (get_action_assert (xml,"run_selection"),
871                     "activate",
872                     G_CALLBACK (on_run_selection),
873                     window);
874
875   g_signal_connect (get_action_assert (xml,"run_current_line"),
876                     "activate",
877                     G_CALLBACK (on_run_current_line),
878                     window);
879
880   g_signal_connect (get_action_assert (xml,"run_to_end"),
881                     "activate",
882                     G_CALLBACK (on_run_to_end),
883                     window);
884
885   g_signal_connect (get_action_assert (xml,"windows_minimise_all"),
886                     "activate",
887                     G_CALLBACK (psppire_window_minimise_all), NULL);
888
889
890
891
892
893   {
894   GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
895
896   merge_help_menu (uim);
897
898   PSPPIRE_WINDOW (window)->menu =
899     GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
900   }
901
902   g_object_unref (xml);
903 }
904
905
906
907
908
909 GtkWidget*
910 psppire_syntax_window_new (const char *encoding)
911 {
912   return GTK_WIDGET (g_object_new (psppire_syntax_window_get_type (),
913                                    "description", _("Syntax Editor"),
914                                    "encoding", encoding,
915                                    NULL));
916 }
917
918 static void
919 error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
920 {
921   gchar *fn = g_filename_display_basename (filename);
922
923   GtkWidget *dialog =
924     gtk_message_dialog_new (w,
925                             GTK_DIALOG_DESTROY_WITH_PARENT,
926                             GTK_MESSAGE_ERROR,
927                             GTK_BUTTONS_CLOSE,
928                             _("Cannot load syntax file `%s'"),
929                             fn);
930
931   g_free (fn);
932
933   g_object_set (dialog, "icon-name", "pspp", NULL);
934
935   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
936                                             "%s", err->message);
937
938   gtk_dialog_run (GTK_DIALOG (dialog));
939
940   gtk_widget_destroy (dialog);
941 }
942
943 /*
944   Loads the buffer from the file called FILENAME
945 */
946 gboolean
947 syntax_load (PsppireWindow *window, const gchar *filename)
948 {
949   GError *err = NULL;
950   gchar *text_locale = NULL;
951   gchar *text_utf8 = NULL;
952   gsize len_locale = -1;
953   gsize len_utf8 = -1;
954   GtkTextIter iter;
955   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
956   GtkTextBuffer *buffer = GTK_TEXT_BUFFER (sw->buffer);
957   gchar *encoding;
958   char *mime_type;
959
960   /* FIXME: What if it's a very big file ? */
961   if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
962     {
963       error_dialog (GTK_WINDOW (window), filename, err);
964       g_clear_error (&err);
965       return FALSE;
966     }
967
968   /* Determine the file's encoding and update sw->encoding.  (The ordering is
969      important here because encoding_guess_whole_file() often returns its
970      argument instead of a copy of it.) */
971   encoding = g_strdup (encoding_guess_whole_file (sw->encoding, text_locale,
972                                                   len_locale));
973   g_free (sw->encoding);
974   sw->encoding = encoding;
975
976   text_utf8 = recode_substring_pool ("UTF-8", encoding,
977                                      ss_buffer (text_locale, len_locale),
978                                      NULL).string;
979   free (text_locale);
980
981   if ( text_utf8 == NULL )
982     {
983       error_dialog (GTK_WINDOW (window), filename, err);
984       g_clear_error (&err);
985       return FALSE;
986     }
987
988   gtk_text_buffer_get_iter_at_line (buffer, &iter, 0);
989
990   gtk_text_buffer_insert (buffer, &iter, text_utf8, len_utf8);
991
992   gtk_text_buffer_set_modified (buffer, FALSE);
993
994   free (text_utf8);
995
996   mime_type = xasprintf ("text/x-spss-syntax; charset=%s", sw->encoding);
997   add_most_recent (filename, mime_type);
998   free (mime_type);
999
1000   return TRUE;
1001 }
1002
1003 \f
1004
1005 static void
1006 psppire_syntax_window_iface_init (PsppireWindowIface *iface)
1007 {
1008   iface->save = syntax_save;
1009   iface->pick_filename = syntax_pick_filename;
1010   iface->load = syntax_load;
1011 }
1012
1013
1014 \f
1015
1016 static void
1017 undo_redo_update (PsppireSyntaxWindow *window)
1018 {
1019   gtk_action_set_sensitive (window->undo_menuitem,
1020                             gtk_source_buffer_can_undo (window->buffer));
1021
1022   gtk_action_set_sensitive (window->redo_menuitem,
1023                             gtk_source_buffer_can_redo (window->buffer));
1024 }
1025
1026 static void
1027 undo_last_edit (PsppireSyntaxWindow *window)
1028 {
1029   gtk_source_buffer_undo (window->buffer);
1030   undo_redo_update (window);
1031 }
1032
1033 static void
1034 redo_last_edit (PsppireSyntaxWindow *window)
1035 {
1036   gtk_source_buffer_redo (window->buffer);
1037   undo_redo_update (window);
1038 }
1039
1040
1041 \f
1042 /* Printing related stuff */
1043
1044
1045 static void
1046 begin_print (GtkPrintOperation *operation,
1047           GtkPrintContext   *context,
1048           PsppireSyntaxWindow *window)
1049 {
1050   window->compositor =
1051     gtk_source_print_compositor_new (window->buffer);
1052 }
1053
1054
1055 static void
1056 end_print (GtkPrintOperation *operation,
1057           GtkPrintContext   *context,
1058           PsppireSyntaxWindow *window)
1059 {
1060   g_object_unref (window->compositor);
1061   window->compositor = NULL;
1062 }
1063
1064
1065
1066 static gboolean
1067 paginate (GtkPrintOperation *operation,
1068           GtkPrintContext   *context,
1069           PsppireSyntaxWindow *window)
1070 {
1071   if (gtk_source_print_compositor_paginate (window->compositor, context))
1072     {
1073       gint n_pages = gtk_source_print_compositor_get_n_pages (window->compositor);
1074       gtk_print_operation_set_n_pages (operation, n_pages);
1075         
1076       return TRUE;
1077     }
1078
1079   return FALSE;
1080 }
1081
1082 static void
1083 draw_page (GtkPrintOperation *operation,
1084            GtkPrintContext   *context,
1085            gint               page_nr,
1086           PsppireSyntaxWindow *window)
1087 {
1088   gtk_source_print_compositor_draw_page (window->compositor, 
1089                                          context,
1090                                          page_nr);
1091 }
1092
1093
1094
1095 static void
1096 psppire_syntax_window_print (PsppireSyntaxWindow *window)
1097 {
1098   GtkPrintOperationResult res;
1099
1100   GtkPrintOperation *print = gtk_print_operation_new ();
1101
1102   if (window->print_settings != NULL) 
1103     gtk_print_operation_set_print_settings (print, window->print_settings);
1104
1105
1106   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
1107   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
1108   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
1109   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
1110
1111   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
1112                                  GTK_WINDOW (window), NULL);
1113
1114   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
1115     {
1116       if (window->print_settings != NULL)
1117         g_object_unref (window->print_settings);
1118       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
1119     }
1120
1121   g_object_unref (print);
1122 }