src/editor/choosesyntax.c

   1 /*
   2    User interface for syntax selection.
   3
   4    Copyright (C) 2011
   5    The Free Software Foundation, Inc.
   6
   7    Copyright (C) 2005, 2006
   8    Leonard den Ottolander <leonard den ottolander nl>
   9
  10    Written by:
  11    Leonard den Ottolander <leonard den ottolander nl>, 2005, 2006
  12
  13    This file is part of the Midnight Commander.
  14
  15    The Midnight Commander is free software: you can redistribute it
  16    and/or modify it under the terms of the GNU General Public License as
  17    published by the Free Software Foundation, either version 3 of the License,
  18    or (at your option) any later version.
  19
  20    The Midnight Commander is distributed in the hope that it will be useful,
  21    but WITHOUT ANY WARRANTY; without even the implied warranty of
  22    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23    GNU General Public License for more details.
  24
  25    You should have received a copy of the GNU General Public License
  26    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  27  */
  28
  29 /** \file
  30  *  \brief Source: user %interface for syntax %selection
  31  *  \author Leonard den Ottolander
  32  *  \date 2005, 2006
  33  */
  34
  35 #include <config.h>
  36
  37 #include <stdlib.h>
  38 #include <sys/types.h>
  39
  40 #include "lib/global.h"
  41 #include "lib/widget.h"         /* Listbox */
  42
  43 #include "edit-impl.h"
  44 #include "editwidget.h"
  45
  46 /*** global variables ****************************************************************************/
  47
  48 /*** file scope macro definitions ****************************************************************/
  49
  50 #define MAX_ENTRY_LEN 40
  51 #define LIST_LINES 14
  52 #define N_DFLT_ENTRIES 2
  53
  54 /*** file scope type declarations ****************************************************************/
  55
  56 /*** file scope variables ************************************************************************/
  57
  58 /*** file scope functions ************************************************************************/
  59 /* --------------------------------------------------------------------------------------------- */
  60
  61 static int
  62 pstrcmp (const void *p1, const void *p2)
  63 {
  64     return strcmp (*(char **) p1, *(char **) p2);
  65 }
  66
  67 /* --------------------------------------------------------------------------------------------- */
  68
  69 static int
  70 exec_edit_syntax_dialog (const char **names, const char *current_syntax)
  71 {
  72     size_t i;
  73
  74     Listbox *syntaxlist = create_listbox_window (LIST_LINES, MAX_ENTRY_LEN,
  75                                                  _("Choose syntax highlighting"), NULL);
  76     LISTBOX_APPEND_TEXT (syntaxlist, 'A', _("< Auto >"), NULL);
  77     LISTBOX_APPEND_TEXT (syntaxlist, 'R', _("< Reload Current Syntax >"), NULL);
  78
  79     for (i = 0; names[i] != NULL; i++)
  80     {
  81         LISTBOX_APPEND_TEXT (syntaxlist, 0, names[i], NULL);
  82         if ((current_syntax != NULL) && (strcmp (names[i], current_syntax) == 0))
  83             listbox_select_entry (syntaxlist->list, i + N_DFLT_ENTRIES);
  84     }
  85
  86     return run_listbox (syntaxlist);
  87 }
  88
  89 /* --------------------------------------------------------------------------------------------- */
  90 /*** public functions ****************************************************************************/
  91 /* --------------------------------------------------------------------------------------------- */
  92
  93 void
  94 edit_syntax_dialog (WEdit * edit)
  95 {
  96     char *current_syntax;
  97     int old_auto_syntax, syntax;
  98     char **names;
  99     gboolean force_reload = FALSE;
 100     size_t count;
 101
 102     current_syntax = g_strdup (edit->syntax_type);
 103     old_auto_syntax = option_auto_syntax;
 104
 105     names = g_new0 (char *, 1);
 106
 107     /* We fill the list of syntax files every time the editor is invoked.
 108        Instead we could save the list to a file and update it once the syntax
 109        file gets updated (either by testing or by explicit user command). */
 110     edit_load_syntax (NULL, &names, NULL);
 111     count = g_strv_length (names);
 112     qsort (names, count, sizeof (char *), pstrcmp);
 113
 114     syntax = exec_edit_syntax_dialog ((const char **) names, current_syntax);
 115     if (syntax >= 0)
 116     {
 117         switch (syntax)
 118         {
 119         case 0:                /* auto syntax */
 120             option_auto_syntax = 1;
 121             break;
 122         case 1:                /* reload current syntax */
 123             force_reload = TRUE;
 124             break;
 125         default:
 126             option_auto_syntax = 0;
 127             g_free (edit->syntax_type);
 128             edit->syntax_type = g_strdup (names[syntax - N_DFLT_ENTRIES]);
 129         }
 130
 131         /* Load or unload syntax rules if the option has changed */
 132         if ((option_auto_syntax && !old_auto_syntax) || old_auto_syntax ||
 133             (current_syntax && edit->syntax_type &&
 134              (strcmp (current_syntax, edit->syntax_type) != 0)) || force_reload)
 135             edit_load_syntax (edit, NULL, edit->syntax_type);
 136
 137         g_free (current_syntax);
 138     }
 139
 140     g_strfreev (names);
 141 }
 142
 143 /* --------------------------------------------------------------------------------------------- */