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.openoffice;
  
  import java.awt.Color;
  import java.awt.Container;
  import java.awt.Desktop;
  import java.awt.Dimension;
  import java.awt.Font;
  import java.awt.Frame;
  import java.awt.GridBagConstraints;
  import java.awt.GridBagLayout;
  import java.awt.Image;
  import java.awt.Insets;
  import java.awt.Toolkit;
  import java.awt.datatransfer.Clipboard;
  import java.awt.datatransfer.StringSelection;
  import java.io.File;
  import java.io.IOException;
  import java.util.Map;
  import java.util.ResourceBundle;
  import java.util.TreeMap;
  import javax.swing.BorderFactory;
  import javax.swing.BoxLayout;
  import javax.swing.ImageIcon;
  import javax.swing.JButton;
  import javax.swing.JDialog;
  import javax.swing.JLabel;
  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.gui.Tools;
  import org.languagetool.language.Contributor;
  import org.languagetool.openoffice.OfficeTools.OfficeProductInfo;
  
  import com.sun.star.uno.XComponentContext;
  
  /**
   * A dialog with version and copyright information.
   * 
   * @author Daniel Naber
   */
  public class AboutDialog {
  
    private final ResourceBundle messages;
    private final JDialog dialog = new JDialog();
  
    public AboutDialog(ResourceBundle messages) {
      this.messages = messages;
    }
  
    public void show(XComponentContext xContext) {
      try {
        String aboutText = Tools.getLabel(messages.getString("guiMenuAbout"));
        
        dialog.setName(aboutText);
        dialog.setTitle(aboutText);
        dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
        Image ltImage = OfficeTools.getLtImage();
        ((Frame) dialog.getOwner()).setIconImage(ltImage);
    
        ImageIcon icon = OfficeTools.getLtImageIcon(true);
        JLabel headerLabel = new JLabel(icon);
        JTextPane headerText = new JTextPane();
        headerText.setBackground(new Color(0, 0, 0, 0));
        headerText.setBorder(BorderFactory.createEmptyBorder());
        headerText.setContentType("text/html");
        headerText.setEditable(false);
        headerText.setOpaque(false);
        headerText.setText("<html><b>LanguageTool</b><br>" + messages.getString("loAboutLtDesc") + "</html>");
        JPanel headerPanel = new JPanel();
        headerPanel.add(headerLabel);
        headerPanel.add(headerText);
    
        JTextPane licensePane = new JTextPane();
        licensePane.setBackground(new Color(0, 0, 0, 0));
        licensePane.setBorder(BorderFactory.createEmptyBorder());
        licensePane.setContentType("text/html");
        licensePane.setEditable(false);
        licensePane.setOpaque(false);
        licensePane.setText("<html>"
                + "<p>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>"
                + "</html>");
        Tools.addHyperlinkListener(licensePane);
  
        OfficeProductInfo officeInfo = OfficeTools.getOfficeProductInfo(xContext);
        JTextPane techPane = new JTextPane();
        techPane.setBackground(new Color(0, 0, 0, 0));
        techPane.setBorder(BorderFactory.createEmptyBorder());
        techPane.setContentType("text/html");
        techPane.setEditable(false);
        techPane.setOpaque(false);
        techPane.setText(String.format("<html>"
            + "<p>LanguageTool %s (%s, %s)<br>"
            + "OS: %s %s (%s)<br>"
            + "%s %s%s (%s), %s<br>"
            + "Java version: %s (%s)<br>"
            + "Java max/total/free memory: %sMB, %sMB, %sMB</p>"
            + "</html>", 
             JLanguageTool.VERSION,
             JLanguageTool.BUILD_DATE,
             JLanguageTool.GIT_SHORT_ID,
             System.getProperty("os.name"),
             System.getProperty("os.version"),
             System.getProperty("os.arch"),
             officeInfo.ooName,
             officeInfo.ooVersion,
             officeInfo.ooExtension,
             officeInfo.ooVendor,
             officeInfo.ooLocale,
             System.getProperty("java.version"),
             System.getProperty("java.vm.vendor"),
             Runtime.getRuntime().maxMemory()/1024/1024,
             Runtime.getRuntime().totalMemory()/1024/1024,
             Runtime.getRuntime().freeMemory()/1024/1024));
  
        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>Maintainer of the office extension: %s</p>"
            + "<p>Maintainers or former maintainers of the language modules -<br>"
            + "(*) means language is unmaintained in LanguageTool:</p><br>"
            + "</html>", OfficeTools.EXTENSION_MAINTAINER));
  
        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());
        
        JButton copyToClipboard = new JButton(messages.getString("loCopyToClipBoardDesc"));
        copyToClipboard.addActionListener(e -> {
          String str = String.format("\nLanguageTool %s (%s, %s)\n"
              + "OS: %s %s (%s)\n"
              + "%s %s%s (%s), %s\n"
              + "Java version: %s (%s)\n"
              + "Java max/total/free memory: %sMB, %sMB, %sMB\n",
               JLanguageTool.VERSION,
               JLanguageTool.BUILD_DATE,
               JLanguageTool.GIT_SHORT_ID,
               System.getProperty("os.name"),
               System.getProperty("os.version"),
               System.getProperty("os.arch"),
               officeInfo.ooName,
               officeInfo.ooVersion,
               officeInfo.ooExtension,
               officeInfo.ooVendor,
               officeInfo.ooLocale,
               System.getProperty("java.version"),
               System.getProperty("java.vm.vendor"),
               Runtime.getRuntime().maxMemory()/1024/1024,
               Runtime.getRuntime().totalMemory()/1024/1024,
               Runtime.getRuntime().freeMemory()/1024/1024);
          Toolkit toolkit = Toolkit.getDefaultToolkit();
          Clipboard clipboard = toolkit.getSystemClipboard();
          StringSelection strSel = new StringSelection(str);
          clipboard.setContents(strSel, null);
          close();
        });
  
        JButton OpenLogFilePath = new JButton(messages.getString("loOpenLogFolderDesc"));
        OpenLogFilePath.addActionListener(e -> {
          File logDir = OfficeTools.getLOConfigDir();
          close();
          try {
            Desktop.getDesktop().open(logDir);
          } catch (IOException e1) {
            MessageHandler.showError(e1);
          }
        });
        
        JButton close = new JButton(messages.getString("guiOOoCloseButton"));
        close.addActionListener(e -> {
          close();
        });
  
        JPanel versionButtonPanel = new JPanel();
        versionButtonPanel.setLayout(new GridBagLayout());
        GridBagConstraints cons = new GridBagConstraints();
        cons.insets = new Insets(6, 0, 0, 15);
        cons.gridx = 0;
        cons.gridy = 0;
        cons.anchor = GridBagConstraints.WEST;
        cons.fill = GridBagConstraints.NONE;
        cons.weightx = 1.0f;
        cons.weighty = 1.0f;
        JLabel versionLabel = new JLabel(messages.getString("loVersionInformation") + ": ");
        Font f = versionLabel.getFont();
        versionLabel.setFont(f.deriveFont(f.getStyle() | Font.BOLD));
        versionButtonPanel.add(versionLabel, cons);
        cons.gridx++;
        versionButtonPanel.add(copyToClipboard, cons);
        cons.anchor = GridBagConstraints.EAST;
        cons.gridx++;
        versionButtonPanel.add(OpenLogFilePath, cons);
        
        JPanel closeButtonPanel = new JPanel();
        closeButtonPanel.setLayout(new GridBagLayout());
        cons = new GridBagConstraints();
        cons.insets = new Insets(6, 12, 0, 15);
        cons.gridx = 0;
        cons.gridy = 0;
        cons.anchor = GridBagConstraints.EAST;
        cons.fill = GridBagConstraints.NONE;
        cons.weightx = 1.0f;
        cons.weighty = 1.0f;
        closeButtonPanel.add(close, cons);
        
        JPanel panel = new JPanel();
        panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
        panel.add(headerPanel);
        panel.add(licensePane);
        panel.add(versionButtonPanel);
        panel.add(techPane);
        panel.add(aboutPane);
        panel.add(scrollPane);
        panel.add(closeButtonPanel);
        Container contentPane = dialog.getContentPane();
        contentPane.setLayout(new GridBagLayout());
        cons = new GridBagConstraints();
        cons.insets = new Insets(8, 8, 8, 8);
        cons.gridx = 0;
        cons.gridy = 0;
        cons.weightx = 10.0f;
        cons.weighty = 10.0f;
        cons.fill = GridBagConstraints.BOTH;
        cons.anchor = GridBagConstraints.NORTHWEST;
        contentPane.add(panel, cons);
        dialog.pack();
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension frameSize = dialog.getSize();
        dialog.setLocation(screenSize.width / 2 - frameSize.width / 2,
            screenSize.height / 2 - frameSize.height / 2);
        dialog.setLocationByPlatform(true);
        dialog.setAutoRequestFocus(true);
        dialog.setVisible(true);
        dialog.setAlwaysOnTop(true);
        dialog.toFront();
      } catch (Throwable t) {
        MessageHandler.showError(t);
      }
    }
  
    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();
    }
    
    private String getMaintainersAsText() {
      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();
      for (Map.Entry<String, Language> entry : list.entrySet()) {
        str.append(entry.getKey());
        if (entry.getValue().getMaintainedState() == LanguageMaintainedState.LookingForNewMaintainer) {
          str.append("(*)");
        }
        str.append(": ");
        int i = 0;
        Contributor[] maintainers = list.get(entry.getKey()).getMaintainers();
        if (maintainers != null) {
          for (Contributor contributor : maintainers) {
            if (i > 0) {
              str.append(", ");
            }
            str.append(contributor.getName());
            i++;
          }
        }
        str.append("\n");
      }
      return str.toString();
    }
    
    public void close() {
      dialog.setVisible(false);
    }
  
  }
  