src/editor/choosesyntax.c

   1 /* User interface for syntax selection.
   2
   3    Copyright (C) 2005, 2006 Leonard den Ottolander <leonard den ottolander nl>
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License version 2 as
   7    published by the Free Software Foundation.
   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, write to the Free Software Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  */
  18
  19 /** \file
  20  *  \brief Source: user %interface for syntax %selection
  21  *  \author Leonard den Ottolander
  22  *  \date 2005, 2006
  23  */
  24
  25 #include <config.h>
  26
  27 #include <stdlib.h>
  28 #include <sys/types.h>
  29
  30 #include "lib/global.h"
  31 #include "lib/widget.h"         /* Listbox */
  32
  33 #include "edit-impl.h"
  34 #include "edit-widget.h"
  35
  36 /*** global variables ****************************************************************************/
  37
  38 /*** file scope macro definitions ****************************************************************/
  39
  40 #define MAX_ENTRY_LEN 40
  41 #define LIST_LINES 14
  42 #define N_DFLT_ENTRIES 2
  43
  44 /*** file scope type declarations ****************************************************************/
  45
  46 /*** file scope variables ************************************************************************/
  47
  48 /*** file scope functions ************************************************************************/
  49 /* --------------------------------------------------------------------------------------------- */
  50
  51 static int
  52 pstrcmp (const void *p1, const void *p2)
  53 {
  54     return strcmp (*(char **) p1, *(char **) p2);
  55 }
  56
  57 /* --------------------------------------------------------------------------------------------- */
  58
  59 static int
  60 exec_edit_syntax_dialog (const char **names, const char *current_syntax)
  61 {
  62     size_t i;
  63
  64     Listbox *syntaxlist = create_listbox_window (LIST_LINES, MAX_ENTRY_LEN,
  65                                                  _("Choose syntax highlighting"), NULL);
  66     LISTBOX_APPEND_TEXT (syntaxlist, 'A', _("< Auto >"), NULL);
  67     LISTBOX_APPEND_TEXT (syntaxlist, 'R', _("< Reload Current Syntax >"), NULL);
  68
  69     for (i = 0; names[i] != NULL; i++)
  70     {
  71         LISTBOX_APPEND_TEXT (syntaxlist, 0, names[i], NULL);
  72         if ((current_syntax != NULL) && (strcmp (names[i], current_syntax) == 0))
  73             listbox_select_entry (syntaxlist->list, i + N_DFLT_ENTRIES);
  74     }
  75
  76     return run_listbox (syntaxlist);
  77 }
  78
  79 /* --------------------------------------------------------------------------------------------- */
  80 /*** public functions ****************************************************************************/
  81 /* --------------------------------------------------------------------------------------------- */
  82
  83 void
  84 edit_syntax_dialog (WEdit * edit)
  85 {
  86     char *current_syntax;
  87     int old_auto_syntax, syntax;
  88     char **names;
  89     gboolean force_reload = FALSE;
  90     size_t count;
  91
  92     current_syntax = g_strdup (edit->syntax_type);
  93     old_auto_syntax = option_auto_syntax;
  94
  95     names = g_new0 (char *, 1);
  96
  97     /* We fill the list of syntax files every time the editor is invoked.
  98        Instead we could save the list to a file and update it once the syntax
  99        file gets updated (either by testing or by explicit user command). */
 100     edit_load_syntax (NULL, &names, NULL);
 101     count = g_strv_length (names);
 102     qsort (names, count, sizeof (char *), pstrcmp);
 103
 104     syntax = exec_edit_syntax_dialog ((const char **) names, current_syntax);
 105     if (syntax >= 0)
 106     {
 107         switch (syntax)
 108         {
 109         case 0:                /* auto syntax */
 110             option_auto_syntax = 1;
 111             break;
 112         case 1:                /* reload current syntax */
 113             force_reload = TRUE;
 114             break;
 115         default:
 116             option_auto_syntax = 0;
 117             g_free (edit->syntax_type);
 118             edit->syntax_type = g_strdup (names[syntax - N_DFLT_ENTRIES]);
 119         }
 120
 121         /* Load or unload syntax rules if the option has changed */
 122         if ((option_auto_syntax && !old_auto_syntax) || old_auto_syntax ||
 123             (current_syntax && edit->syntax_type &&
 124              (strcmp (current_syntax, edit->syntax_type) != 0)) || force_reload)
 125             edit_load_syntax (edit, NULL, edit->syntax_type);
 126
 127         g_free (current_syntax);
 128     }
 129
 130     g_strfreev (names);
 131 }
 132
 133 /* --------------------------------------------------------------------------------------------- */