code: /* LanguageTool, a natural language style checker 
   * Copyright (C) 2016 Daniel Naber (http://www.danielnaber.de)
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  package org.languagetool.gui;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.ResourceBundle;
  import javax.swing.DefaultComboBoxModel;
  import org.languagetool.Language;
  import org.languagetool.Languages;
  
  /**
   * A DefaultComboBoxModel to be used by LanguageComboBox.
   *
   * @author Panagiotis Minos
   * @since 3.4
   */
  class LanguageComboBoxModel extends DefaultComboBoxModel<LanguageAdapter> {
  
    private LanguageComboBoxModel() {
      super();
    }
  
    static LanguageComboBoxModel create(ResourceBundle messages,
            String extLangSuffix, boolean includeHidden,
            List<Language> external, LanguageAdapter first) {
  
      LanguageComparator comparator = new LanguageComparator(messages, extLangSuffix);
      LanguageComboBoxModel model = new LanguageComboBoxModel();
  
      if (first != null) {
        //e.g. an option like "System Default"
        model.addElement(first);
      }
      if (external != null) {
        // do not sort the original list
        ArrayList<Language> ext = new ArrayList<>(external);
        Collections.sort(ext, comparator);
        for (Language l : ext) {
          model.addElement(new LanguageAdapter(l));
        }
      }
      // the original list is unmodifiable
      ArrayList<Language> internal = new ArrayList<>(Languages.get());
      Collections.sort(internal, comparator);
      for (Language l : internal) {
        if (includeHidden || !l.isHiddenFromGui()) {
          model.addElement(new LanguageAdapter(l));
        }
      }
      return model;
    }
  }
  