code: /* LanguageTool, a natural language style checker 
   * Copyright (C) 2007 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.awt.Color;
  import java.awt.Component;
  import java.awt.Dimension;
  import java.awt.Toolkit;
  import java.util.Map;
  import java.util.ResourceBundle;
  import java.util.TreeMap;
  import javax.swing.BorderFactory;
  import javax.swing.BoxLayout;
  import javax.swing.JOptionPane;
  import javax.swing.JPanel;
  import javax.swing.JScrollPane;
  import javax.swing.JTextPane;
  import org.languagetool.JLanguageTool;
  import org.languagetool.Language;
  import org.languagetool.LanguageMaintainedState;
  import org.languagetool.Languages;
  import org.languagetool.language.Contributor;
  
  /**
   * A dialog with version and copyright information.
   * 
   * @author Daniel Naber
   */
  public class AboutDialog {
  
    private final ResourceBundle messages;
    private final Component parent;
  
    public AboutDialog(ResourceBundle messages, Component parent) {
      this.messages = messages;
      this.parent = parent;
    }
  
    public void show() {
      String aboutText = Tools.getLabel(messages.getString("guiMenuAbout"));
  
      JTextPane aboutPane = new JTextPane();
      aboutPane.setBackground(new Color(0, 0, 0, 0));
      aboutPane.setBorder(BorderFactory.createEmptyBorder());
      aboutPane.setContentType("text/html");
      aboutPane.setEditable(false);
      aboutPane.setOpaque(false);
  
      aboutPane.setText(String.format("<html>"
              + "<p>LanguageTool %s (%s, %s)<br>"
              + "Copyright (C) 2005-2023 the LanguageTool community and Daniel Naber<br>"
              + "This software is licensed under the GNU Lesser General Public License.<br>"
              + "<a href=\"https://www.languagetool.org\">https://www.languagetool.org</a><br>"
              + "Java max/total/free memory: %sMB, %sMB, %sMB</p>"
              + "<p>Maintainers or former maintainers of the language modules -<br>"
              + "(*) means language is unmaintained in LanguageTool:</p><br>"
              + "</html>", JLanguageTool.VERSION,
               JLanguageTool.BUILD_DATE,
               JLanguageTool.GIT_SHORT_ID,
               Runtime.getRuntime().maxMemory()/1024/1024,
               Runtime.getRuntime().totalMemory()/1024/1024,
               Runtime.getRuntime().freeMemory()/1024/1024));
  
      Tools.addHyperlinkListener(aboutPane);
  
      JTextPane maintainersPane = new JTextPane();
      maintainersPane.setBackground(new Color(0, 0, 0, 0));
      maintainersPane.setBorder(BorderFactory.createEmptyBorder());
      maintainersPane.setContentType("text/html");
      maintainersPane.setEditable(false);
      maintainersPane.setOpaque(false);
  
      maintainersPane.setText(getMaintainers());
  
      int prefWidth = Math.max(520, maintainersPane.getPreferredSize().width);
      int maxHeight = Toolkit.getDefaultToolkit().getScreenSize().height / 2;
      maxHeight = Math.min(maintainersPane.getPreferredSize().height, maxHeight);
      maintainersPane.setPreferredSize(new Dimension(prefWidth, maxHeight));
  
      JScrollPane scrollPane = new JScrollPane(maintainersPane);
      scrollPane.setBorder(BorderFactory.createEmptyBorder());
      JPanel panel = new JPanel();
      panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
      panel.add(aboutPane);
      panel.add(scrollPane);
  
      JOptionPane.showMessageDialog(parent, panel,
          aboutText, JOptionPane.INFORMATION_MESSAGE);
    }
  
    private String getMaintainers() {
      TreeMap<String, Language> list = new TreeMap<>();
      for (Language lang : Languages.get()) {
        if (!lang.isVariant()) {
          if (lang.getMaintainers() != null) {
            list.put(messages.getString(lang.getShortCode()), lang);
          }
        }
      }
      StringBuilder str = new StringBuilder();
      str.append("<table border=0 cellspacing=0 cellpadding=0>");
      for (Map.Entry<String, Language> entry : list.entrySet()) {
        str.append("<tr valign=\"top\"><td>");
        str.append(entry.getKey());
        if (entry.getValue().getMaintainedState() == LanguageMaintainedState.LookingForNewMaintainer) {
          str.append("(*)");
        }
        str.append(":</td>");
        str.append("<td>&nbsp;</td>");
        str.append("<td>");
        int i = 0;
        Contributor[] maintainers = list.get(entry.getKey()).getMaintainers();
        if (maintainers != null) {
          for (Contributor contributor : maintainers) {
            if (i > 0) {
              str.append(", ");
              if (i % 3 == 0) {
                str.append("<br>");
              }
            }
            str.append(contributor.getName());
            i++;
          }
        }
        str.append("</td></tr>");
      }
      str.append("</table>");
      return str.toString();
    }
  
  }
  