Java 类javax.swing.LookAndFeel 实例源码

private static int getLFHeightAdjustment() {
    LookAndFeel lf = UIManager.getLookAndFeel();
    String lfID = lf.getID();
    logger.fine("createSingleLineEditor(): current L&F = '"+lfID+"'");
    if ("Metal".equals(lfID)) {
        return 0;
    }
    if ("GTK".equals(lfID)) {
        return 2;
    }
    if ("Motif".equals(lfID)) {
        return 3;
    }
    if ("Nimbus".equals(lfID)) {
        return 0;
    }
    if ("Aqua".equals(lfID)) {
        return -2;
    }
    return 0;
}

static void applyNbSkin() {
    LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
    String name = lookAndFeel.getName();
    switch (name) {
        case "Mac OS X":
            name = "mac";
            break;
        case "Metal":
            name = "metal";
            break;
        case "GTK look and feel":
            name = "gtk";
            break;
        case "Nimbus":
            name = "nimbus";
            break;
        case "Windows":
            name = "win";
            break;
        case "Darcula":
            name = "darcula";
            break;
    }
    final String resource = "nbres:/org/netbeans/modules/htmlui/css/wizard-" + name + ".css";
    loadCss(resource);
}

private boolean isDarkLookAndFeel() {
    String className = NbPreferences.root().node( "laf" ).get( "laf", null );
    if( null == className )
        return false;

    ClassLoader loader = Lookup.getDefault().lookup( ClassLoader.class );
    if( null == loader )
        loader = ClassLoader.getSystemClassLoader();

    try {
        Class klazz = loader.loadClass( className );
        LookAndFeel laf = ( LookAndFeel ) klazz.newInstance();
        return laf.getDefaults().getBoolean( "nb.dark.theme" ); //NOI18N
    } catch( Exception e ) {
        //ignore
    }
    return false;
}

/** {@inheritDoc} */
@Override
protected void paintComponent(Graphics graphics) {
    // Surchargée pour dessiner le fond avec gradient
    final LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
    final String lafName = lookAndFeel != null ? lookAndFeel.getName() : null;
    if ("Substance".equals(lafName)) {
        super.paintComponent(graphics); // le gradient fonctionne mal en substance ?
    }

    final Color startColor = getBackground();
    final Color endColor = GRADIENT_COLOR;
    final int w = getWidth();
    final int h = getHeight();

    // l'image du gradient pourrait être mise en cache, mais ce n'est pas grave
    final Paint paint = new GradientPaint(0, h / 2f, startColor, 1, h, endColor, false);
    final Graphics2D graphix = (Graphics2D) graphics.create();
    graphix.setPaint(paint);
    graphix.fillRect(0, 0, w, h);
    graphix.dispose();
}

/**
 * Overridden to message super and forward the method to the tree. Since
 * the tree is not actually in the component hierarchy it will never receive
 * this unless we forward it in this manner.
 */
//----------//
// updateUI //
//----------//
@Override
public void updateUI ()
{
    super.updateUI();

    if (tree != null) {
        tree.updateUI();
    }

    // Use the tree's default foreground and background colors in the
    // table.
    LookAndFeel.installColorsAndFont(this, "Tree.background", "Tree.foreground", "Tree.font");
}

protected void addBasicDefaults(LookAndFeelAddons addon, List defaults) {
  defaults.add(JTipOfTheDay.uiClassID);
  defaults.add(BasicTipOfTheDayUI.class.getName());

  defaults.add("TipOfTheDay.font");
  defaults.add(UIManager.getFont("TextPane.font"));

  defaults.add("TipOfTheDay.tipFont");
  defaults.add(UIManager.getFont("Label.font").deriveFont(Font.BOLD, 13f));

  defaults.add("TipOfTheDay.background");
  defaults.add(new ColorUIResource(Color.white));

  defaults.add("TipOfTheDay.icon");
  defaults.add(LookAndFeel.makeIcon(BasicTipOfTheDayUI.class,
    "TipOfTheDay24.gif"));

  defaults.add("TipOfTheDay.border");
  defaults.add(new BorderUIResource(BorderFactory.createLineBorder(new Color(
    117, 117, 117))));

  addResource(defaults,
    "com.l2fprod.common.swing.plaf.basic.resources.TipOfTheDay");
}

protected void addWindowsDefaults(LookAndFeelAddons addon, List defaults) {
  super.addWindowsDefaults(addon, defaults);

  defaults.add(JTipOfTheDay.uiClassID);
  defaults.add(WindowsTipOfTheDayUI.class.getName());

  defaults.add("TipOfTheDay.background");
  defaults.add(new ColorUIResource(128, 128, 128));

  defaults.add("TipOfTheDay.font");
  defaults.add(UIManager.getFont("Label.font").deriveFont(13f));

  defaults.add("TipOfTheDay.icon");
  defaults.add(LookAndFeel.makeIcon(WindowsTipOfTheDayUI.class,
    "tipoftheday.png"));

  defaults.add("TipOfTheDay.border");
  defaults
    .add(new BorderUIResource(new WindowsTipOfTheDayUI.TipAreaBorder()));

  addResource(defaults,
    "com.l2fprod.common.swing.plaf.windows.resources.TipOfTheDay");
}

protected void installDefaults() {
  group.setOpaque(true);
  group.setBorder(createPaneBorder());
  ((JComponent)group.getContentPane()).setBorder(createContentPaneBorder());

  LookAndFeel.installColorsAndFont(
    group,
    "TaskPaneGroup.background",
    "TaskPaneGroup.foreground",
    "TaskPaneGroup.font");

  LookAndFeel.installColorsAndFont(
    (JComponent)group.getContentPane(),
    "TaskPaneGroup.background",
    "TaskPaneGroup.foreground",
    "TaskPaneGroup.font");    
}

/**
 * This method installs defaults for the JOptionPane.
 */
protected void installDefaults()
{
  LookAndFeel.installColorsAndFont(optionPane, "OptionPane.background",
                                   "OptionPane.foreground",
                                   "OptionPane.font");
  LookAndFeel.installBorder(optionPane, "OptionPane.border");
  optionPane.setOpaque(true);

  minimumSize = UIManager.getDimension("OptionPane.minimumSize");

  // FIXME: Image icons don't seem to work properly right now.
  // Once they do, replace the synthetic icons with these ones.

  /*
  warningIcon = (IconUIResource) defaults.getIcon("OptionPane.warningIcon");
  infoIcon = (IconUIResource) defaults.getIcon("OptionPane.informationIcon");
  errorIcon = (IconUIResource) defaults.getIcon("OptionPane.errorIcon");
  questionIcon = (IconUIResource) defaults.getIcon("OptionPane.questionIcon");
  */
}

/**
 * Initializes any default properties that this UI has from the defaults for
 * the Basic look and feel.
 */
protected void installDefaults()
{

  LookAndFeel.installBorder(menuItem, "Menu.border");
  LookAndFeel.installColorsAndFont(menuItem, "Menu.background",
                                   "Menu.foreground", "Menu.font");
  menuItem.setMargin(UIManager.getInsets("Menu.margin"));
  acceleratorFont = UIManager.getFont("Menu.acceleratorFont");
  acceleratorForeground = UIManager.getColor("Menu.acceleratorForeground");
  acceleratorSelectionForeground = UIManager.getColor("Menu.acceleratorSelectionForeground");
  selectionBackground = UIManager.getColor("Menu.selectionBackground");
  selectionForeground = UIManager.getColor("Menu.selectionForeground");
  arrowIcon = UIManager.getIcon("Menu.arrowIcon");
  oldBorderPainted = UIManager.getBoolean("Menu.borderPainted");
  ((JMenu) menuItem).setDelay(200);
}

public void updateUI()
   {
super.updateUI();
LookAndFeel currentLookAndFeel = UIManager.getLookAndFeel();
if (currentLookAndFeel != null) {
    String current = currentLookAndFeel.getClass().getName();
    for (Enumeration<AbstractButton> buttons = getLookAndFeelGroup().getElements();
     buttons.hasMoreElements();) {
    AbstractButton button = buttons.nextElement();
    if (button.getActionCommand().equals(current)) {
        button.setSelected(true);
        break;
    }
    }
}
   }

protected void updateLookAndFeels()
   {
clearButtons();
LookAndFeel currentLookAndFeel = UIManager.getLookAndFeel();
String current = currentLookAndFeel == null ? "" : currentLookAndFeel.getName();
LookAndFeelInfo[] infoArray = UIManager.getInstalledLookAndFeels();
if (infoArray == null || infoArray.length == 0) {
    return;
}

for (LookAndFeelInfo info : infoArray) {
    JRadioButtonMenuItem button = new JRadioButtonMenuItem(info.getName());
    button.setActionCommand(info.getClassName());
    if (info.getName().equals(current))
    button.setSelected(true);
    addButton(button);
}
   }

public void installDefaults(AbstractButton b)
{
    super.installDefaults(b);

    LookAndFeel.installProperty(b, "rolloverEnabled", Boolean.TRUE);

    LookAndFeel.installProperty(b, "opaque", Boolean.FALSE);

    btnColorInfo = (LuckButtonColorInfo) UIManager.get(LuckButtonUIBundle.COLOR_INFO);

    // 使用配置颜色替换默认字体颜色
    // Replace the default font color with the configured color
    if(b.getForeground() instanceof ColorUIResource)
    {
        b.setForeground(btnColorInfo.getFontColor());
    }

    listener = new ButtonPropertyChangeListener();

    b.addPropertyChangeListener(listener);
}

/**
 * Called by the KeyboardHandler when a popup is made visible.
 */
void installKeyboardActionsImpl()
{
  Object[] bindings;
  if (popupMenu.getComponentOrientation().isLeftToRight())
    {
      bindings = (Object[])
           SharedUIDefaults.get("PopupMenu.selectedWindowInputMapBindings");
    }
  else
    {
      bindings = (Object[]) SharedUIDefaults.get
                    ("PopupMenu.selectedWindowInputMapBindings.RightToLeft");
    }
  InputMap inputMap = LookAndFeel.makeComponentInputMap(popupMenu, bindings);
  SwingUtilities.replaceUIInputMap(popupMenu,
                                   JComponent.WHEN_IN_FOCUSED_WINDOW,
                                   inputMap);

  // Install ActionMap.
  SwingUtilities.replaceUIActionMap(popupMenu, getActionMap());
}

/**
 * This method installs the defaults that are defined in the Basic look and
 * feel for this {@link JMenuItem}.
 */
protected void installDefaults()
{
  String prefix = getPropertyPrefix();
  LookAndFeel.installBorder(menuItem, prefix + ".border");
  LookAndFeel.installColorsAndFont(menuItem, prefix + ".background",
                                   prefix + ".foreground", prefix + ".font");
  menuItem.setMargin(UIManager.getInsets(prefix + ".margin"));
  acceleratorFont = UIManager.getFont(prefix + ".acceleratorFont");
  acceleratorForeground = UIManager.getColor(prefix
      + ".acceleratorForeground");
  acceleratorSelectionForeground = UIManager.getColor(prefix
      + ".acceleratorSelectionForeground");
  selectionBackground = UIManager.getColor(prefix + ".selectionBackground");
  selectionForeground = UIManager.getColor(prefix + ".selectionForeground");
  acceleratorDelimiter = UIManager.getString(prefix + ".acceleratorDelimiter");
  checkIcon = UIManager.getIcon(prefix + ".checkIcon");

  menuItem.setHorizontalTextPosition(SwingConstants.TRAILING);
  menuItem.setHorizontalAlignment(SwingConstants.LEADING);
}

public void propertyChange(PropertyChangeEvent event)
{
  JRootPane source = (JRootPane) event.getSource();
  String propertyName = event.getPropertyName();
  if (propertyName.equals("defaultButton"))
    {
      Object newValue = event.getNewValue();
      InputMap im =
        SwingUtilities.getUIInputMap(source,
                                     JComponent.WHEN_IN_FOCUSED_WINDOW);
      if (newValue != null)
        {
          Object[] keybindings = (Object[]) UIManager.get(
              "RootPane.defaultButtonWindowKeyBindings");
          LookAndFeel.loadKeyBindings(im, keybindings);
        }
      else
        {
          im.clear();
        }
    }
}

/**
 * {@inheritDoc}
 */
@Override
protected void addWindowsDefaults(LookAndFeelAddons addon, DefaultsList defaults) {
  super.addWindowsDefaults(addon, defaults);

  Font font = UIManagerExt.getSafeFont("Label.font",
          new Font("Dialog", Font.PLAIN, 12));
  font = font.deriveFont(13f);

  defaults.add(JXCategory.uiClassID, WindowsTipOfTheDayUI.class.getName());
  defaults.add("Category.background", new ColorUIResource(Color.GRAY));
  defaults.add("Category.font", new FontUIResource(font));
  defaults.add("Category.icon",
          LookAndFeel.makeIcon(WindowsTipOfTheDayUI.class, "resources/tipoftheday.png"));
  defaults.add("Category.border" ,new BorderUIResource(new WindowsTipOfTheDayUI.TipAreaBorder()));

  UIManagerExt.addResourceBundle(
      "org.jdesktop.swingx.plaf.windows.resources.TipOfTheDay");
}

@Override
protected void addBasicDefaults(LookAndFeelAddons addon, DefaultsList defaults) {
    super.addBasicDefaults(addon, defaults);

    Font font = UIManagerExt.getSafeFont("Label.font", new Font("Dialog", Font.PLAIN, 12));
    font = font.deriveFont(Font.BOLD, 13f);

    defaults.add(JXTipOfTheDay.uiClassID, BasicTipOfTheDayUI.class.getName());
    defaults.add("TipOfTheDay.font", UIManagerExt.getSafeFont("TextPane.font",
              new FontUIResource("Serif", Font.PLAIN, 12)));
    defaults.add("TipOfTheDay.tipFont", new FontUIResource(font));
    defaults.add("TipOfTheDay.background", new ColorUIResource(Color.WHITE));
    defaults.add("TipOfTheDay.icon",
            LookAndFeel.makeIcon(BasicTipOfTheDayUI.class, "resources/TipOfTheDay24.gif"));
    defaults.add("TipOfTheDay.border", new BorderUIResource(
            BorderFactory.createLineBorder(new Color(117, 117, 117))));

  UIManagerExt.addResourceBundle(
          "org.jdesktop.swingx.plaf.basic.resources.TipOfTheDay");
}

/**
 * {@inheritDoc}
 */
@Override
protected void addWindowsDefaults(LookAndFeelAddons addon, DefaultsList defaults) {
  super.addWindowsDefaults(addon, defaults);

  Font font = UIManagerExt.getSafeFont("Label.font",
          new Font("Dialog", Font.PLAIN, 12));
  font = font.deriveFont(13f);

  defaults.add(JXTipOfTheDay.uiClassID, WindowsTipOfTheDayUI.class.getName());
  defaults.add("TipOfTheDay.background", new ColorUIResource(Color.GRAY));
  defaults.add("TipOfTheDay.font", new FontUIResource(font));
  defaults.add("TipOfTheDay.icon",
          LookAndFeel.makeIcon(WindowsTipOfTheDayUI.class, "resources/tipoftheday.png"));
  defaults.add("TipOfTheDay.border" ,new BorderUIResource(new WindowsTipOfTheDayUI.TipAreaBorder()));

  UIManagerExt.addResourceBundle(
      "org.jdesktop.swingx.plaf.windows.resources.TipOfTheDay");
}

/**
 * This method installs the defaults given by the Look and Feel.
 */
protected void installDefaults()
{
  LookAndFeel.installColors(splitPane, "SplitPane.background",
                            "SplitPane.foreground");
  LookAndFeel.installBorder(splitPane, "SplitPane.border");
  divider = createDefaultDivider();
  divider.setBorder(UIManager.getBorder("SplitPaneDivider.border"));
  resetLayoutManager();
  nonContinuousLayoutDivider = createDefaultNonContinuousLayoutDivider();
  splitPane.add(divider, JSplitPane.DIVIDER);

  // There is no need to add the nonContinuousLayoutDivider.
  dividerSize = UIManager.getInt("SplitPane.dividerSize");
  splitPane.setDividerSize(dividerSize);
  divider.setDividerSize(dividerSize);
  splitPane.setOpaque(true);
}

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }

public static final LookAndFeelType getLAF() {
    if(lookAndFeelType==null) {
        try {
            initializeLookAndFeel();
        } catch (InitializationException e) {
            LogManager.log(e);
        }
        lookAndFeelType = LookAndFeelType.DEFAULT;

        if (!uiUnavailable && UiMode.getCurrentUiMode() == UiMode.SWING) {
            LookAndFeel laf = UIManager.getLookAndFeel();
            if (laf != null) {
                String id = laf.getID();
                for (LookAndFeelType type : LookAndFeelType.values()) {
                    if (id.equals(LookAndFeelType.WINDOWS_XP.getId()) ||
                            id.equals(LookAndFeelType.WINDOWS_CLASSIC.getId())) {
                        final Object object = Toolkit.getDefaultToolkit().
                                getDesktopProperty(WINDOWS_XP_THEME_MARKER_PROPERTY);
                        boolean xpThemeActive = false;
                        if (object != null) {
                            xpThemeActive = (Boolean) object;
                        }
                        lookAndFeelType = (xpThemeActive) ? LookAndFeelType.WINDOWS_XP : LookAndFeelType.WINDOWS_CLASSIC;
                        break;
                    } else if (id.equals(type.getId())) {
                        lookAndFeelType = type;
                        break;
                    }
                }
            }
        }
    }
    return lookAndFeelType;
}

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }

/**
 * Factory methods for obtaining the current <code>LayoutStyle</code>
 * object appropriate for the current look and feel.
 * 
 * @return the current LayoutStyle instance
 */
public static LayoutStyle getSharedInstance() {
    Object layoutImpl = UIManager.get("LayoutStyle.instance");
    if (layoutImpl != null && (layoutImpl instanceof LayoutStyle)) {
        return (LayoutStyle)layoutImpl;
    }
    LookAndFeel currentLAF = UIManager.getLookAndFeel();
    if (layoutStyle == null || currentLAF != laf) {
        laf = currentLAF;
        String lafID= laf.getID();
        if (USE_CORE_LAYOUT_STYLE) {
            layoutStyle = new SwingLayoutStyle();
        } else if ("Metal" == lafID) {
            layoutStyle = new MetalLayoutStyle();
        }
        else if ("Windows" == lafID) {
            layoutStyle = new WindowsLayoutStyle();
        }
        else if ("GTK" == lafID) {
            layoutStyle = new GnomeLayoutStyle();
        }
        else if ("Aqua" == lafID) {
            layoutStyle = new AquaLayoutStyle();
        } else {
            layoutStyle = new LayoutStyle();
        }
    }
    return layoutStyle;
}

@Override
public void updateUI()
{
    super.updateUI();
    setLineWrap(true);
    setWrapStyleWord(true);
    setHighlighter(null);
    setEditable(false);
    setFocusable(false);
    LookAndFeel.installBorder(this, LABEL_BORDER);
    LookAndFeel.installColorsAndFont(this, LABEL_BACKGROUND, LABEL_FOREGROUND, LABEL_FONT);
}

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }

/**
 * Sets the parent of the passed in ActionMap to be the audio action
 * map.
 */
static void installAudioActionMap(ActionMap map) {
    LookAndFeel laf = UIManager.getLookAndFeel();
    if (laf instanceof BasicLookAndFeel) {
        map.setParent(((BasicLookAndFeel)laf).getAudioActionMap());
    }
}

/**
 * Helper method to play a named sound.
 *
 * @param c JComponent to play the sound for.
 * @param actionKey Key for the sound.
 */
static void playSound(JComponent c, Object actionKey) {
    LookAndFeel laf = UIManager.getLookAndFeel();
    if (laf instanceof BasicLookAndFeel) {
        ActionMap map = c.getActionMap();
        if (map != null) {
            Action audioAction = map.get(actionKey);
            if (audioAction != null) {
                // pass off firing the Action to a utility method
                ((BasicLookAndFeel)laf).playSound(audioAction);
            }
        }
    }
}

static void initUIDefaults() {
    try {
        // Load Defaults from MotifLookAndFeel

        // This dummy load is necessary to get SystemColor initialized. !!!!!!
        Color c = SystemColor.text;

        LookAndFeel lnf = new XAWTLookAndFeel();
        uidefaults = lnf.getDefaults();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }

/**
 * Sets the parent of the passed in ActionMap to be the audio action
 * map.
 */
static void installAudioActionMap(ActionMap map) {
    LookAndFeel laf = UIManager.getLookAndFeel();
    if (laf instanceof BasicLookAndFeel) {
        map.setParent(((BasicLookAndFeel)laf).getAudioActionMap());
    }
}

/**
 * Helper method to play a named sound.
 *
 * @param c JComponent to play the sound for.
 * @param actionKey Key for the sound.
 */
static void playSound(JComponent c, Object actionKey) {
    LookAndFeel laf = UIManager.getLookAndFeel();
    if (laf instanceof BasicLookAndFeel) {
        ActionMap map = c.getActionMap();
        if (map != null) {
            Action audioAction = map.get(actionKey);
            if (audioAction != null) {
                // pass off firing the Action to a utility method
                ((BasicLookAndFeel)laf).playSound(audioAction);
            }
        }
    }
}

static void initUIDefaults() {
    try {
        // Load Defaults from MotifLookAndFeel

        // This dummy load is necessary to get SystemColor initialized. !!!!!!
        Color c = SystemColor.text;

        LookAndFeel lnf = new XAWTLookAndFeel();
        uidefaults = lnf.getDefaults();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}

/**
 * Sets the parent of the passed in ActionMap to be the audio action
 * map.
 */
static void installAudioActionMap(ActionMap map) {
    LookAndFeel laf = UIManager.getLookAndFeel();
    if (laf instanceof BasicLookAndFeel) {
        map.setParent(((BasicLookAndFeel)laf).getAudioActionMap());
    }
}

/**
 * Helper method to play a named sound.
 *
 * @param c JComponent to play the sound for.
 * @param actionKey Key for the sound.
 */
static void playSound(JComponent c, Object actionKey) {
    LookAndFeel laf = UIManager.getLookAndFeel();
    if (laf instanceof BasicLookAndFeel) {
        ActionMap map = c.getActionMap();
        if (map != null) {
            Action audioAction = map.get(actionKey);
            if (audioAction != null) {
                // pass off firing the Action to a utility method
                ((BasicLookAndFeel)laf).playSound(audioAction);
            }
        }
    }
}

static void initUIDefaults() {
    try {
        // Load Defaults from MotifLookAndFeel

        // This dummy load is necessary to get SystemColor initialized. !!!!!!
        Color c = SystemColor.text;

        LookAndFeel lnf = new XAWTLookAndFeel();
        uidefaults = lnf.getDefaults();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }

/**
   * Overridden to message super and forward the method to the tree. Since the
   * tree is not actually in the component hieachy it will never receive this
   * unless we forward it in this manner.
   */
  public void updateUI() {
super.updateUI();
    if (tree != null) { 
    tree.updateUI();
    }


      // Use the tree's default foreground and background colors in the
      // table.
      LookAndFeel.installColorsAndFont(this, "Tree.background",
              "Tree.foreground", "Tree.font");
  }