/*
    Copyright (C) 2013 Nicola L.C. Talbot
    www.dickimaw-books.com

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
package com.dickimawbooks.datatooltk.gui;

import java.io.File;
import java.net.URISyntaxException;
import java.util.*;
import java.util.regex.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import javax.swing.border.Border;

import com.dickimawbooks.datatooltk.*;

/**
 * Dialog box to allow user to edit application settings.
 */
public class PropertiesDialog extends JDialog
  implements ActionListener,ListSelectionListener,MouseListener
{
   public PropertiesDialog(DatatoolGUI gui)
   {
      super(gui, DatatoolTk.getLabel("preferences.title"), true);
      this.gui = gui;

      tabbedPane = new JTabbedPane();

      getContentPane().add(tabbedPane, BorderLayout.CENTER);

      // General tab

      JComponent generalTab = addTab("general");

      JComponent startupComp = Box.createVerticalBox();
      startupComp.setBorder(BorderFactory.createTitledBorder(
        BorderFactory.createEtchedBorder(),
        DatatoolTk.getLabel("preferences.startup")));
      generalTab.add(startupComp);

      ButtonGroup bg = new ButtonGroup();

      homeButton = createRadioButton("preferences.startup", "home", bg);
      startupComp.add(homeButton);

      cwdButton = createRadioButton("preferences.startup", "cwd", bg);
      startupComp.add(cwdButton);

      lastButton = createRadioButton("preferences.startup", "last", bg);
      startupComp.add(lastButton);

      JComponent box = Box.createHorizontalBox();
      box.setAlignmentX(0);
      startupComp.add(box);

      customButton = createRadioButton("preferences.startup", "custom", bg);
      box.add(customButton);

      fileChooser = new JFileChooser();

      customFileField = new FileField(startupComp, fileChooser,
         JFileChooser.DIRECTORIES_ONLY);

      box.add(customFileField);

      JComponent shuffleComp = Box.createVerticalBox();
      shuffleComp.setBorder(BorderFactory.createTitledBorder(
        BorderFactory.createEtchedBorder(),
        DatatoolTk.getLabel("preferences.shuffle")
      ));

      generalTab.add(shuffleComp);

      box = new JPanel(new FlowLayout(FlowLayout.LEFT));
      box.setAlignmentX(0);
      shuffleComp.add(box);

      iterationsField = new NonNegativeIntField(100);
      box.add(DatatoolGuiResources.createJLabel("preferences.shuffle.iter"), 
         iterationsField);
      box.add(iterationsField);

      box = new JPanel(new FlowLayout(FlowLayout.LEFT));
      box.setAlignmentX(0);
      shuffleComp.add(box);

      hasSeedBox = DatatoolGuiResources.createJCheckBox("preferences.shuffle",
         "seed", this);
      box.add(hasSeedBox);

      seedField = new NonNegativeIntField(0);
      seedField.setText("");
      seedField.setEnabled(false);
      box.add(seedField);

      // CSV tab

      JComponent csvTab = addTab("csv");

      box = Box.createHorizontalBox();
      box.setAlignmentX(0);
      csvTab.add(box);

      box.add(new JLabel(DatatoolTk.getLabel("preferences.csv.sep")));

      bg = new ButtonGroup();

      sepTabButton = createRadioButton("preferences.csv", "tabsep", bg);
      box.add(sepTabButton);

      box.add(new JLabel(DatatoolTk.getLabel("preferences.csv.or")));

      sepCharButton = createRadioButton("preferences.csv", "sepchar", bg);
      box.add(sepCharButton);

      sepCharField = new CharField(',');
      box.add(sepCharField);

      box = Box.createHorizontalBox();
      box.setAlignmentX(0);
      csvTab.add(box);

      delimCharField = new CharField('"');

      box.add(createLabel("preferences.csv.delim", delimCharField));
      box.add(delimCharField);

      hasHeaderBox = createCheckBox("preferences.csv", "hasheader");
      csvTab.add(hasHeaderBox);

      // SQL tab

      JComponent sqlTab = addTab("sql");

      JLabel[] labels = new JLabel[5];
      int idx = 0;
      int maxWidth = 0;
      Dimension dim;

      box = createNewRow(sqlTab);

      hostField = new JTextField(16);

      labels[idx] = createLabel("preferences.sql.host", hostField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(hostField);

      box = createNewRow(sqlTab);

      portField = new NonNegativeIntField(3306);

      labels[idx] = createLabel("preferences.sql.port", portField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);

      box.add(portField);

      box = createNewRow(sqlTab);

      prefixField = new JTextField(16);

      labels[idx] = createLabel("preferences.sql.prefix", prefixField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(prefixField);

      box = createNewRow(sqlTab);

      databaseField = new JTextField(16);

      labels[idx] = createLabel("preferences.sql.database", databaseField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(databaseField);

      box = createNewRow(sqlTab);

      userField = new JTextField(16);

      labels[idx] = createLabel("preferences.sql.user", userField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(userField);

      for (idx = 0; idx < labels.length; idx++)
      {
         dim = labels[idx].getPreferredSize();
         dim.width = maxWidth;
         labels[idx].setPreferredSize(dim);
      }

      wipeBox = createCheckBox("preferences.sql", "wipe");
      sqlTab.add(wipeBox);

      // TeX Tab

      JComponent texTab = addTab("tex");

      box = createNewRow(texTab);
      latexFileField = new FileField(this, "latex", fileChooser);
      box.add(createLabel("preferences.tex.latexapp", latexFileField));
      box.add(latexFileField);

      mapTeXBox = createCheckBox("preferences.tex", "map");
      texTab.add(mapTeXBox);

      box = createNewRow(texTab, new BorderLayout());
      texMapTable = new JTable();
      texMapTable.addMouseListener(this);
      texMapTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
      texMapTable.setBorder(BorderFactory.createEtchedBorder());
      texMapTable.setIntercellSpacing(new Dimension(6, 1));

      FontMetrics fm = texMapTable.getFontMetrics(texMapTable.getFont());

      int rowHeight = fm.getHeight()+6;
      texMapTable.setRowHeight(rowHeight);

      JScrollPane sp = new JScrollPane(texMapTable);
      sp.setBorder(BorderFactory.createEmptyBorder());

      sp.setPreferredSize(new Dimension(150, 11*rowHeight));
      box.add(sp, BorderLayout.CENTER);

      JComponent buttonPanel = Box.createVerticalBox();
      box.add(buttonPanel, BorderLayout.EAST);

      buttonPanel.add(DatatoolGuiResources.createActionButton(
         "preferences.tex", "add_map", this, null));

      editMapButton = DatatoolGuiResources.createActionButton(
         "preferences.tex", "edit_map", this, null);
      buttonPanel.add(editMapButton);

      removeMapButton = DatatoolGuiResources.createActionButton(
         "preferences.tex", "remove_map", this, null);
      buttonPanel.add(removeMapButton);

      texMapTable.getSelectionModel().addListSelectionListener(this);

      // Currencies Tab

      JComponent currencyTab = 
         addTab(new JPanel(new BorderLayout()), "currencies");

      currencyList = new JList<String>();
      currencyList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
      currencyList.setVisibleRowCount(10);

      currencyTab.add(new JScrollPane(currencyList), BorderLayout.CENTER);

      buttonPanel = Box.createVerticalBox();
      currencyTab.add(buttonPanel, BorderLayout.EAST);

      currencyTab.add(createTextArea("preferences.currencies.reminder"),
        BorderLayout.NORTH);

      buttonPanel.add(DatatoolGuiResources.createActionButton(
         "preferences.currencies", "add_currency", this, null));

      editCurrencyButton = DatatoolGuiResources.createActionButton(
         "preferences.currencies", "edit_currency", this, null);
      buttonPanel.add(editCurrencyButton);

      removeCurrencyButton = DatatoolGuiResources.createActionButton(
         "preferences.currencies", "remove_currency", this, null);
      buttonPanel.add(removeCurrencyButton);

      currencyList.addListSelectionListener(this);
      currencyList.addMouseListener(this);

      // Display Tab

      JComponent displayTab =
         addTab(new JPanel(new FlowLayout(FlowLayout.LEFT)), "display");

      displayTab.setAlignmentY(0);
      JComponent leftPanel = Box.createVerticalBox();
      leftPanel.setAlignmentY(0);
      displayTab.add(leftPanel);

      labels = new JLabel[3];
      idx = 0;
      maxWidth = 0;

      box = createNewRow(leftPanel);

      GraphicsEnvironment env =
         GraphicsEnvironment.getLocalGraphicsEnvironment();

      fontBox = new JComboBox<String>(env.getAvailableFontFamilyNames());

      labels[idx] = createLabel("preferences.display.font", fontBox);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(fontBox);

      box = createNewRow(leftPanel);
      sizeField = new NonNegativeIntField(10);

      labels[idx] = createLabel("preferences.display.fontsize", sizeField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(sizeField);

      box = createNewRow(leftPanel);
      cellHeightField = new NonNegativeIntField(4);

      labels[idx] = createLabel("preferences.display.cellheight", cellHeightField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(cellHeightField);

      for (idx = 0; idx < labels.length; idx++)
      {
         dim = labels[idx].getPreferredSize();
         dim.width = maxWidth;
         labels[idx].setPreferredSize(dim);
      }

      box = createNewRow(leftPanel);
      box.add(Box.createVerticalStrut(20));

      JComponent editorBox = createNewRow(leftPanel);
      editorBox.setLayout(new BoxLayout(editorBox, BoxLayout.Y_AXIS));
      editorBox.setBorder(BorderFactory.createTitledBorder(
        BorderFactory.createEtchedBorder(), 
        DatatoolTk.getLabel("preferences.display.editor")));

      box = createNewRow(editorBox);
      box.add(DatatoolGuiResources.createMessageArea(2, 22,
         "preferences.display.editor.info"));

      box = createNewRow(editorBox);

      labels = new JLabel[4];
      idx = 0;
      maxWidth = 0;

      editorHeightField = new NonNegativeIntField(10);
      labels[idx] = createLabel("preferences.display.editorheight",
         editorHeightField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(editorHeightField);

      box = createNewRow(editorBox);

      editorWidthField = new NonNegativeIntField(8);
      labels[idx] = createLabel("preferences.display.editorwidth",
         editorWidthField);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);
      box.add(editorWidthField);

      box = createNewRow(editorBox);

      JButton button = new JButton("...");
      button.setActionCommand("highlightcs");
      button.addActionListener(this);
      labels[idx] = createLabel("preferences.display.highlightcs", button);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);

      highlightCsSwatch = new JPanel();
      highlightCsSwatch.setPreferredSize(new Dimension(38,20));
      box.add(highlightCsSwatch);
      box.add(button);

      box = createNewRow(editorBox);

      button = new JButton("...");
      button.setActionCommand("highlightcomment");
      button.addActionListener(this);
      labels[idx] = createLabel("preferences.display.highlightcomment", button);
      dim = labels[idx].getPreferredSize();
      maxWidth = Math.max(maxWidth, dim.width);
      box.add(labels[idx++]);

      highlightCommentSwatch = new JPanel();
      highlightCommentSwatch.setPreferredSize(new Dimension(38,20));
      box.add(highlightCommentSwatch);
      box.add(button);

      for (idx = 0; idx < labels.length; idx++)
      {
         dim = labels[idx].getPreferredSize();
         dim.width = maxWidth;
         labels[idx].setPreferredSize(dim);
      }

      syntaxHighlightingBox = DatatoolGuiResources.createJCheckBox
        ("preferences.display", "editorsyntax", null);
      editorBox.add(syntaxHighlightingBox);

      JComponent rightPanel = Box.createVerticalBox();
      rightPanel.setBorder(BorderFactory.createTitledBorder(
        BorderFactory.createEtchedBorder(), 
        DatatoolTk.getLabel("preferences.display.cellwidths")));
      rightPanel.setAlignmentY(0);
      displayTab.add(rightPanel);

      cellWidthFields = new NonNegativeIntField[DatatoolDb.TYPE_LABELS.length];
      labels = new JLabel[DatatoolDb.TYPE_LABELS.length];

      for (int i = 0; i < cellWidthFields.length; i++)
      {
         box = createNewRow(rightPanel);
         cellWidthFields[i] = new NonNegativeIntField(0);
         labels[i] = new JLabel(DatatoolDb.TYPE_LABELS[i]);
         if (DatatoolDb.TYPE_MNEMONICS[i] != -1)
         {
            labels[i].setDisplayedMnemonic(DatatoolDb.TYPE_MNEMONICS[i]);
            labels[i].setLabelFor(cellWidthFields[i]);
         }

         dim = labels[i].getPreferredSize();
         maxWidth = Math.max(maxWidth, dim.width);
         box.add(labels[i]);
         box.add(cellWidthFields[i]);
      }

      for (idx = 0; idx < labels.length; idx++)
      {
         dim = labels[idx].getPreferredSize();
         dim.width = maxWidth;
         labels[idx].setPreferredSize(dim);
      }

      // Language Tab

      JComponent languageTab =
         addTab(new JPanel(new BorderLayout()), "language");

      languageTab.add(createTextArea("preferences.language.restart"),
         BorderLayout.NORTH);

      JComponent comp = Box.createVerticalBox();
      languageTab.add(comp);

      box = new JPanel(new FlowLayout());
      comp.add(box);

      helpsetLangBox = new JComboBox<String>(gui.getHelpSets());

      JLabel helpsetLangLabel 
         = createLabel("preferences.language.helpset", helpsetLangBox);
      box.add(helpsetLangLabel);
      box.add(helpsetLangBox);

      box = new JPanel(new FlowLayout());
      comp.add(box);

      dictLangBox = new JComboBox<String>(gui.getDictionaries());

      JLabel dictLangLabel 
         = createLabel("preferences.language.dictionary", dictLangBox);
      box.add(dictLangLabel);
      box.add(dictLangBox);

      dim = helpsetLangLabel.getPreferredSize();
      dim.width = Math.max(dim.width,
         (int)dictLangBox.getPreferredSize().getWidth());

      helpsetLangLabel.setPreferredSize(dim);
      dictLangLabel.setPreferredSize(dim);

      // Plugins tab

      JComponent pluginsTab = addTab("plugins");

      box = createNewRow(pluginsTab);
      box.add(DatatoolGuiResources.createMessageArea("preferences.plugins.note"));

      box = createNewRow(pluginsTab);
      perlFileField = new FileField(this, "perl", fileChooser);
      box.add(createLabel("preferences.plugins.perl", perlFileField));
      box.add(perlFileField);

      getContentPane().add(
        DatatoolGuiResources.createOkayCancelHelpPanel(this, gui, "preferences"),
        BorderLayout.SOUTH);
      pack();

      setLocationRelativeTo(null);
   }

   private JComponent addTab(String label)
   {
      return addTab(Box.createVerticalBox(), label);
   }

   private JComponent addTab(JComponent tab, String label)
   {
      int index = tabbedPane.getTabCount();

      JPanel panel = new JPanel();
      panel.setOpaque(true);
      panel.setBorder(BorderFactory.createEtchedBorder());
      panel.add(tab);

      tabbedPane.addTab(DatatoolTk.getLabel("preferences", label), 
         panel);

      String tooltip = DatatoolTk.getToolTip("preferences", label);

      if (tooltip != null)
      {
         tabbedPane.setToolTipTextAt(index, tooltip);
      }

      tabbedPane.setMnemonicAt(index,
         DatatoolTk.getMnemonic("preferences", label));

      return tab;
   }

   private JComponent createNewRow(JComponent tab)
   {
      return createNewRow(tab, new FlowLayout(FlowLayout.LEFT, 4, 1));
   }

   private JComponent createNewRow(JComponent tab, LayoutManager layout)
   {
      JComponent comp = new JPanel(layout);
      comp.setAlignmentX(0);
      tab.add(comp);

      return comp;
   }

   private JRadioButton createRadioButton(String parentLabel,
      String label, ButtonGroup bg)
   {
      JRadioButton button = DatatoolGuiResources.createJRadioButton(parentLabel,
         label, bg, this);


      button.setAlignmentX(0);
      button.setOpaque(false);

      return button;
   }

   private JLabel createLabel(String label, JComponent comp)
   {
      return DatatoolGuiResources.createJLabel(label, comp);
   }

   private JTextArea createTextArea(String label)
   {
      return DatatoolGuiResources.createMessageArea(2, 40, label);
   }

   private JCheckBox createCheckBox(String parentLabel, String label)
   {
      JCheckBox checkBox = DatatoolGuiResources.createJCheckBox(parentLabel, label, this);

      checkBox.setAlignmentX(0);

      return checkBox;
   }

   public void display(DatatoolSettings settings)
   {
      this.settings = settings;

      switch (settings.getStartUp())
      {
         case DatatoolSettings.STARTUP_HOME:
           homeButton.setSelected(true);
           customFileField.setEnabled(false);
         break;
         case DatatoolSettings.STARTUP_CWD:
           cwdButton.setSelected(true);
           customFileField.setEnabled(false);
         break;
         case DatatoolSettings.STARTUP_LAST:
           lastButton.setSelected(true);
           customFileField.setEnabled(false);
         break;
         case DatatoolSettings.STARTUP_CUSTOM:
           customButton.setSelected(true);
           customFileField.setEnabled(true);
           customFileField.setFile(settings.getStartUpDirectory());
         break;
      }

      char sep = settings.getSeparator();

      if (sep == '\t')
      {
         sepTabButton.setSelected(true);
         sepCharField.setEnabled(false);
      }
      else
      {
         sepCharButton.setSelected(true);
         sepCharField.setEnabled(true);
      }

      delimCharField.setValue(settings.getDelimiter());

      hasHeaderBox.setSelected(settings.hasCSVHeader());

      hostField.setText(settings.getSqlHost());
      prefixField.setText(settings.getSqlPrefix());
      portField.setValue(settings.getSqlPort());
      wipeBox.setSelected(settings.isWipePasswordEnabled());

      String user = settings.getSqlUser();

      userField.setText(user == null ? "" : user);

      String db = settings.getSqlDbName();

      databaseField.setText(db == null ? "" : db);

      mapTeXBox.setSelected(settings.isTeXMappingOn());

      latexFileField.setFileName(settings.getLaTeX());

      sizeField.setValue(settings.getFontSize());
      fontBox.setSelectedItem(settings.getFontName());
      cellHeightField.setValue(settings.getCellHeight());

      for (int i = 0; i < cellWidthFields.length; i++)
      {
         cellWidthFields[i].setValue(settings.getCellWidth(i-1));
      }

      editorHeightField.setValue(settings.getCellEditorHeight());
      editorWidthField.setValue(settings.getCellEditorWidth());
      syntaxHighlightingBox.setSelected(settings.isSyntaxHighlightingOn());
      highlightCsSwatch.setBackground(settings.getControlSequenceHighlight());
      highlightCommentSwatch.setBackground(settings.getCommentHighlight());

      texMapModel = new TeXMapModel(this, texMapTable, settings);
      texMapTable.setModel(texMapModel);

      currencyListModel = new CurrencyListModel(currencyList, settings);

      iterationsField.setValue(settings.getShuffleIterations());

      Long seed = settings.getRandomSeed();

      if (seed == null)
      {
         hasSeedBox.setSelected(false);
         seedField.setEnabled(false);
      }
      else
      {
         hasSeedBox.setSelected(true);
         seedField.setEnabled(true);
         seedField.setValue(seed.intValue());
      }

      helpsetLangBox.setSelectedItem(settings.getHelpSet());
      dictLangBox.setSelectedItem(settings.getDictionary());

      perlFileField.setFileName(settings.getPerl());

      updateButtons();

      setVisible(true);
   }

   public void valueChanged(ListSelectionEvent evt)
   {
      updateButtons();
   }

   public void mouseClicked(MouseEvent evt)
   {
      Object source = evt.getSource();

      if (evt.getClickCount() == 2 && evt.getModifiersEx() == 0)
      {
         if (source == currencyList)
         {
            currencyListModel.editCurrency(currencyList.getSelectedIndex());
         }
         else if (source == texMapTable)
         {
            texMapModel.editRow(texMapTable.getSelectedRow());
         }
      }
   }

   public void mouseEntered(MouseEvent evt)
   {
   }

   public void mouseExited(MouseEvent evt)
   {
   }

   public void mousePressed(MouseEvent evt)
   {
   }

   public void mouseReleased(MouseEvent evt)
   {
   }

   public void actionPerformed(ActionEvent evt)
   {
      String action = evt.getActionCommand();

      if (action == null) return;

      if (action.equals("okay"))
      {
         okay();
      }
      else if (action.equals("cancel"))
      {
         setVisible(false);
      }
      else if (action.equals("home") || action.equals("cwd")
        || action.equals("last"))
      {
         customFileField.setEnabled(false);
      }
      else if (action.equals("custom"))
      {
         customFileField.setEnabled(true);
         customFileField.requestFocusInWindow();
      }
      else if (action.equals("tabsep"))
      {
         sepCharField.setEnabled(false);
      }
      else if (action.equals("sepchar"))
      {
         sepCharField.setEnabled(true);
         sepCharField.requestFocusInWindow();
      }
      else if (action.equals("add_map"))
      {
         texMapModel.addRow();
      }
      else if (action.equals("edit_map"))
      {
         int index = texMapTable.getSelectedRow();

         if (index > -1)
         {
            texMapModel.editRow(index);
         }
      }
      else if (action.equals("remove_map"))
      {
         int index = texMapTable.getSelectedRow();

         if (index > -1)
         {
            texMapModel.removeRow(index);
         }
      }
      else if (action.equals("add_currency"))
      {
         currencyListModel.addCurrency();
      }
      else if (action.equals("remove_currency"))
      {
         int index = currencyList.getSelectedIndex();

         if (index > -1)
         {
            currencyListModel.removeCurrency(index);
         }
      }
      else if (action.equals("edit_currency"))
      {
         int index = currencyList.getSelectedIndex();

         if (index > -1)
         {
            currencyListModel.editCurrency(index);
         }
      }
      else if (action.equals("seed"))
      {
         seedField.setEnabled(hasSeedBox.isSelected());

         if (seedField.isEnabled())
         {
            seedField.requestFocusInWindow();
         }
      }
      else if (action.equals("highlightcs"))
      {
         Color col = JColorChooser.showDialog(this, 
            DatatoolTk.getLabel("preferences.display.highlightcs"),
            highlightCsSwatch.getBackground());

         if (col != null)
         {
            highlightCsSwatch.setBackground(col);
         }
      }
      else if (action.equals("highlightcomment"))
      {
         Color col = JColorChooser.showDialog(this, 
            DatatoolTk.getLabel("preferences.display.highlightcomment"),
            highlightCommentSwatch.getBackground());

         if (col != null)
         {
            highlightCommentSwatch.setBackground(col);
         }
      }
   }

   private void updateButtons()
   {
      boolean enabled = texMapTable.getSelectedRow() != -1;
      editMapButton.setEnabled(enabled);
      removeMapButton.setEnabled(enabled);

      enabled = currencyList.getSelectedIndex() != -1;
      editCurrencyButton.setEnabled(enabled);
      removeCurrencyButton.setEnabled(enabled);
   }

   private void okay()
   {
      if (homeButton.isSelected())
      {
         settings.setStartUp(DatatoolSettings.STARTUP_HOME);
      }
      else if (cwdButton.isSelected())
      {
         settings.setStartUp(DatatoolSettings.STARTUP_CWD);
      }
      else if (lastButton.isSelected())
      {
         settings.setStartUp(DatatoolSettings.STARTUP_LAST);
      }
      else if (customButton.isSelected())
      {
         File file = customFileField.getFile();

         if (file == null)
         {
            DatatoolGuiResources.error(this, 
               DatatoolTk.getLabel("error.missing_custom_file"));

            return;
         }

         settings.setCustomStartUp(file);
      }

      if (sepTabButton.isSelected())
      {
         settings.setSeparator('\t');
      }
      else
      {
         char sep = sepCharField.getValue();

         if (sep == (char)0)
         {
            DatatoolGuiResources.error(this, 
               DatatoolTk.getLabel("error.missing_sep"));
            return;
         }

         settings.setSeparator(sep);
      }

      char delim = delimCharField.getValue();

      if (delim == (char)0)
      {
         DatatoolGuiResources.error(this, 
            DatatoolTk.getLabel("error.missing_delim"));
         return;
      }

      settings.setDelimiter(delim);

      settings.setHasCSVHeader(hasHeaderBox.isSelected());

      String host = hostField.getText();

      if (host.isEmpty())
      {
         DatatoolGuiResources.error(this, 
            DatatoolTk.getLabel("error.missing_host"));
         return;
      }

      settings.setSqlHost(host);

      String prefix = prefixField.getText();

      if (prefix.isEmpty())
      {
         DatatoolGuiResources.error(this,
            DatatoolTk.getLabel("error.missing_prefix"));
         return;
      }

      settings.setSqlPrefix(prefix);

      if (portField.getText().isEmpty())
      {
         DatatoolGuiResources.error(this,
            DatatoolTk.getLabel("error.missing_port"));
         return;
      }

      settings.setSqlPort(portField.getValue());

      settings.setSqlUser(userField.getText());
      settings.setSqlDbName(databaseField.getText());

      settings.setTeXMapping(mapTeXBox.isSelected());

      settings.setLaTeX(latexFileField.getFileName());

      texMapModel.updateSettings();

      currencyListModel.updateSettings();

      settings.setFontName(fontBox.getSelectedItem().toString());
      settings.setFontSize(sizeField.getValue());
      settings.setCellHeight(cellHeightField.getValue());

      for (int i = 0; i < cellWidthFields.length; i++)
      {
         settings.setCellWidth(cellWidthFields[i].getValue(), i-1);
      }

      settings.setCellEditorHeight(editorHeightField.getValue());
      settings.setCellEditorWidth(editorWidthField.getValue());
      settings.setSyntaxHighlighting(syntaxHighlightingBox.isSelected());

      settings.setControlSequenceHighlight(highlightCsSwatch.getBackground());
      settings.setCommentHighlight(highlightCommentSwatch.getBackground());

      gui.updateTableSettings();

      if (hasSeedBox.isSelected())
      {
         settings.setRandomSeed(new Long(seedField.getValue()));
      }
      else
      {
         settings.setRandomSeed(null);
      }

      settings.setShuffleIterations(iterationsField.getValue());

      settings.setHelpSet(helpsetLangBox.getSelectedItem().toString());
      settings.setDictionary(dictLangBox.getSelectedItem().toString());

      settings.setPerl(perlFileField.getFileName());

      setVisible(false);
   }

   private DatatoolSettings settings;

   private JRadioButton homeButton, cwdButton, lastButton, customButton;

   private JRadioButton sepTabButton, sepCharButton;

   private CharField sepCharField, delimCharField;

   private JCheckBox hasHeaderBox, wipeBox, mapTeXBox,
      hasSeedBox, syntaxHighlightingBox;

   private FileField customFileField, latexFileField, perlFileField;

   private JFileChooser fileChooser;

   private NonNegativeIntField portField, sizeField, cellHeightField,
      iterationsField, seedField, editorHeightField, editorWidthField;

   private NonNegativeIntField[] cellWidthFields;

   private JTextField hostField, prefixField, databaseField, userField;

   private JButton removeMapButton, editMapButton,
      removeCurrencyButton, editCurrencyButton;

   private JComboBox<String> fontBox;

   private TeXMapModel texMapModel;

   private JTable texMapTable;

   private JList<String> currencyList;

   private CurrencyListModel currencyListModel;

   private JComboBox<String> helpsetLangBox, dictLangBox;

   private JComponent highlightCsSwatch, highlightCommentSwatch;

   private JTabbedPane tabbedPane;

   private DatatoolGUI gui;
}

class CurrencyListModel extends AbstractListModel<String>
{
   public CurrencyListModel(JList<String> list, DatatoolSettings settings)
   {
      this.settings = settings;
      this.list = list;

      list.setModel(this);

      int n = settings.getCurrencyCount();
      currencies = new Vector<String>(n);

      for (int i = 0; i < n; i++)
      {
         currencies.add(settings.getCurrency(i));
      }
   }

   public int getSize()
   {
      return currencies.size();
   }

   public String getElementAt(int index)
   {
      return currencies.get(index);
   }

   public void updateSettings()
   {
      settings.clearCurrencies();

      for (int i = 0, n = currencies.size(); i < n; i++)
      {
         settings.addCurrency(currencies.get(i));
      }
   }

   public void addCurrency()
   {
      String response = JOptionPane.showInputDialog(list, LABEL_ADD);

      if (response != null)
      {
         currencies.add(response);

         list.revalidate();
      }
   }

   public void removeCurrency(int index)
   {
      currencies.remove(index);

      list.revalidate();
   }

   public void editCurrency(int index)
   {
      String response = JOptionPane.showInputDialog(list, LABEL_EDIT,
         currencies.get(index));

      if (response != null)
      {
         currencies.set(index, response);
      }

      list.revalidate();
   }

   private DatatoolSettings settings;

   private Vector<String> currencies;

   private JList<String> list;

   private static final String LABEL_ADD 
      = DatatoolTk.getLabel("preferences.currencies.add_currency");

   private static final String LABEL_EDIT 
      = DatatoolTk.getLabel("preferences.currencies.edit_currency");
}