uimanager.java

gcc的组建

    Boolean value = (Boolean) get(key);
    return value != null ? value.booleanValue() : false;
  }
  
  /**
   * Returns a boolean value from the defaults table,
   * <code>false</code> if key is not present.
   *
   * @since 1.4
   */
  public static boolean getBoolean(Object key, Locale locale)
  {
    Boolean value = (Boolean) get(key, locale);
    return value != null ? value.booleanValue() : false;
  }
    
  /**
   * Returns a border from the defaults table. 
   */
  public static Border getBorder(Object key)
  {
    return (Border) get(key);
  }
    
  /**
   * Returns a border from the defaults table.
   *
   * @since 1.4
   */
  public static Border getBorder(Object key, Locale locale)
  {
    return (Border) get(key, locale);
  }
    
  /**
   * Returns a drawing color from the defaults table. 
   */
  public static Color getColor(Object key)
  {
    return (Color) get(key);
  }

  /**
   * Returns a drawing color from the defaults table. 
   */
  public static Color getColor(Object key, Locale locale)
  {
    return (Color) get(key);
  }

  /**
   * The fully qualified class name of the cross platform (Metal) look and feel.
   * This string can be passed to Class.forName()
   * 
   * @return <code>"javax.swing.plaf.metal.MetalLookAndFeel"</code>
   */
  public static String getCrossPlatformLookAndFeelClassName()
  {	
    return "javax.swing.plaf.metal.MetalLookAndFeel";
  }

  /**
   * Returns the default values for this look and feel. 
   * 
   * @return The {@link UIDefaults} for the current {@link LookAndFeel}.
   */
  public static UIDefaults getDefaults()
  {
    return currentUIDefaults;
  }

  /**
   * Returns a dimension from the defaults table. 
   */
  public static Dimension getDimension(Object key)
  {
    return (Dimension) get(key);
  }

  /**
   * Returns a dimension from the defaults table. 
   */
  public static Dimension getDimension(Object key, Locale locale)
  {
    return (Dimension) get(key, locale);
  }

  /**
   * Retrieves a font from the defaults table of the current
   * LookAndFeel.
   *
   * @param key an Object that specifies the font. Typically,
   *        this is a String such as
   *        <code>TitledBorder.font</code>.
   */
  public static Font getFont(Object key)
  {
    return (Font) get(key);
  }

  /**
   * Retrieves a font from the defaults table of the current
   * LookAndFeel.
   *
   * @param key an Object that specifies the font. Typically,
   *        this is a String such as
   *        <code>TitledBorder.font</code>.
   */
  public static Font getFont(Object key, Locale locale)
  {
    return (Font) get(key ,locale);
  }

  /**
   * Returns an Icon from the defaults table.
   */
  public static Icon getIcon(Object key)
  {
    return (Icon) get(key);
  }
  
  /**
   * Returns an Icon from the defaults table.
   */
  public static Icon getIcon(Object key, Locale locale)
  {
    return (Icon) get(key, locale);
  }
  
  /**
   * Returns an Insets object from the defaults table.
   */
  public static Insets getInsets(Object key)
  {
    Object o = get(key);
    if (o instanceof Insets)
      return (Insets) o;
    else
      return null;
  }

  /**
   * Returns an Insets object from the defaults table.
   */
  public static Insets getInsets(Object key, Locale locale)
  {
    Object o = get(key, locale);
    if (o instanceof Insets)
      return (Insets) o;
    else
      return null;
  }

  /**
   * Returns an array containing information about the {@link LookAndFeel}s
   * that are installed.
   * 
   * @return A list of the look and feels that are available (installed).
   */
  public static LookAndFeelInfo[] getInstalledLookAndFeels()
  {
    return installed;
  }

  public static int getInt(Object key)
  {
    Integer x = (Integer) get(key);
    if (x == null)
      return 0;
    return x.intValue();
  }

  public static int getInt(Object key, Locale locale)
  {
    Integer x = (Integer) get(key, locale);
    if (x == null)
      return 0;
    return x.intValue();
  }

  /**
   * Returns the current look and feel (which may be <code>null</code>).
   * 
   * @return The current look and feel.
   * 
   * @see #setLookAndFeel(LookAndFeel)
   */
  public static LookAndFeel getLookAndFeel()
  {
    return currentLookAndFeel;
  }

  /**
   * Returns the <code>UIDefaults</code> table of the currently active
   * look and feel.
   * 
   * @return The {@link UIDefaults} for the current {@link LookAndFeel}.
   */
  public static UIDefaults getLookAndFeelDefaults()
  {
    return currentUIDefaults;
  }

  /**
   * Returns a string from the defaults table.
   */
  public static String getString(Object key)
  {
    return (String) get(key);
  }
  
  /**
   * Returns a string from the defaults table.
   */
  public static String getString(Object key, Locale locale)
  {
    return (String) get(key, locale);
  }
  
  /**
   * Returns the name of the {@link LookAndFeel} class that implements the
   * native systems look and feel if there is one, otherwise the name
   * of the default cross platform LookAndFeel class.
   * 
   * @return The fully qualified class name for the system look and feel.
   * 
   * @see #getCrossPlatformLookAndFeelClassName()
   */
  public static String getSystemLookAndFeelClassName()
  {
    return getCrossPlatformLookAndFeelClassName();
  }

  /**
   * Returns UI delegate from the current {@link LookAndFeel} that renders the 
   * target component.
   * 
   * @param target  the target component.
   */
  public static ComponentUI getUI(JComponent target)
  {
    ComponentUI ui = null;
    if (userUIDefaults != null
        && userUIDefaults.get(target.getUIClassID()) != null)
      ui = userUIDefaults.getUI(target);
    if (ui == null)
      ui = currentUIDefaults.getUI(target);
    return ui;
  }

  /**
   * Creates a new look and feel and adds it to the current array.
   * 
   * @param name  the look and feel name.
   * @param className  the fully qualified name of the class that implements the
   *                   look and feel.
   */
  public static void installLookAndFeel(String name, String className)
  {
    installLookAndFeel(new LookAndFeelInfo(name, className));
  }

  /**
   * Adds the specified look and feel to the current array and then calls
   * setInstalledLookAndFeels(javax.swing.UIManager.LookAndFeelInfo[]).
   */
  public static void installLookAndFeel(LookAndFeelInfo info)
  {
    // FIXME: not yet implemented
  }

  /**
   * Stores an object in the defaults table.
   */
  public static Object put(Object key, Object value)
  {
    Object old = get(key);
    if (userUIDefaults == null)
      userUIDefaults = new UIDefaults();
    userUIDefaults.put(key, value);
    return old;
  }

  /**
   * Replaces the current array of installed LookAndFeelInfos.
   */
  public static void setInstalledLookAndFeels(UIManager.LookAndFeelInfo[] infos)
  {
    // FIXME: not yet implemented.
  }
  
  /**
   * Sets the current {@link LookAndFeel}.
   * 
   * @param newLookAndFeel  the new look and feel (<code>null</code> permitted).
   * 
   * @throws UnsupportedLookAndFeelException if the look and feel is not 
   *         supported on the current platform.
   * 
   * @see LookAndFeel#isSupportedLookAndFeel()
   */
  public static void setLookAndFeel(LookAndFeel newLookAndFeel)
    throws UnsupportedLookAndFeelException
  {
    if (newLookAndFeel != null && ! newLookAndFeel.isSupportedLookAndFeel())
      throw new UnsupportedLookAndFeelException(newLookAndFeel.getName());
    LookAndFeel oldLookAndFeel = currentLookAndFeel;
    if (oldLookAndFeel != null)
      oldLookAndFeel.uninitialize();

    // Set the current default look and feel using a LookAndFeel object. 
    currentLookAndFeel = newLookAndFeel;
    if (newLookAndFeel != null)
      {
        newLookAndFeel.initialize();
        currentUIDefaults = newLookAndFeel.getDefaults();
      }
    else
      {
        currentUIDefaults = null;    
      }
    listeners.firePropertyChange("lookAndFeel", oldLookAndFeel, newLookAndFeel);
    //revalidate();
    //repaint();
  }

  /**
   * Set the current default look and feel using a class name.
   * 
   * @param className  the look and feel class name.
   * 
   * @throws UnsupportedLookAndFeelException if the look and feel is not 
   *         supported on the current platform.
   * 
   * @see LookAndFeel#isSupportedLookAndFeel()
   */
  public static void setLookAndFeel(String className)
    throws ClassNotFoundException, InstantiationException, IllegalAccessException,
    UnsupportedLookAndFeelException
  {
    Class c = Class.forName(className);
    LookAndFeel a = (LookAndFeel) c.newInstance(); // throws class-cast-exception
    setLookAndFeel(a);
  }
}