uidefaults.java

gcc的组建

   */
  public Font getFont(Object key, Locale locale)
  {
    Object o = get(key, locale);
    return o instanceof Font ? (Font) o : null;
  }

  /**
   * Returns a color entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return the color entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Color getColor(Object key)
  {
    Object o = get(key);
    return o instanceof Color ? (Color) o : null;
  }

  /**
   * Returns a color entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the color entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Color getColor(Object key, Locale locale)
  {
    Object o = get(key, locale);
    return o instanceof Color ? (Color) o : null;
  }

  /**
   * Returns an icon entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return the icon entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Icon getIcon(Object key)
  {
    Object o = get(key);
    return o instanceof Icon ? (Icon) o : null;
  }

  /**
   * Returns an icon entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the icon entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Icon getIcon(Object key, Locale locale)
  {
    Object o = get(key, locale);
    return o instanceof Icon ? (Icon) o : null;
  }

  /**
   * Returns a border entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return the border entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Border getBorder(Object key)
  {
    Object o = get(key);
    return o instanceof Border ? (Border) o : null;
  }

  /**
   * Returns a border entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the border entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Border getBorder(Object key, Locale locale)
  {
    Object o = get(key, locale);
    return o instanceof Border ? (Border) o : null;
  }

  /**
   * Returns a string entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return the string entry for <code>key</code> or null if no such entry
   *     exists
   */
  public String getString(Object key)
  {
    Object o = get(key);
    return o instanceof String ? (String) o : null;
  }

  /**
   * Returns a string entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the string entry for <code>key</code> or null if no such entry
   *     exists
   */
  public String getString(Object key, Locale locale)
  {
    Object o = get(key, locale);
    return o instanceof String ? (String) o : null;
  }

  /**
   * Returns an integer entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return the integer entry for <code>key</code> or null if no such entry
   *     exists
   */
  public int getInt(Object key)
  {
    Object o = get(key);
    return o instanceof Integer ? ((Integer) o).intValue() : 0;
  }

  /**
   * Returns an integer entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the integer entry for <code>key</code> or null if no such entry
   *     exists
   */
  public int getInt(Object key, Locale locale)
  {
    Object o = get(key, locale);
    return o instanceof Integer ? ((Integer) o).intValue() : 0;
  }

  /**
   * Returns a boolean entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return The boolean entry for <code>key</code> or <code>false</code> if no 
   *         such entry exists.
   */
  public boolean getBoolean(Object key)
  {
    return Boolean.TRUE.equals(get(key));
  }

  /**
   * Returns a boolean entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the boolean entry for <code>key</code> or null if no such entry
   *     exists
   */
  public boolean getBoolean(Object key, Locale locale)
  {
    return Boolean.TRUE.equals(get(key, locale));
  }

  /**
   * Returns an insets entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return the insets entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Insets getInsets(Object key) 
  {
    Object o = get(key);
    return o instanceof Insets ? (Insets) o : null;
  }

  /**
   * Returns an insets entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the boolean entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Insets getInsets(Object key, Locale locale) 
  {
    Object o = get(key, locale);
    return o instanceof Insets ? (Insets) o : null;
  }

  /**
   * Returns a dimension entry for the default locale.
   *
   * @param key the key to the requested entry
   *
   * @return the dimension entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Dimension getDimension(Object key) 
  {
    Object o = get(key);
    return o instanceof Dimension ? (Dimension) o : null;
  }

  /**
   * Returns a dimension entry for a specic locale.
   *
   * @param key the key to the requested entry
   * @param locale the locale to the requested entry
   *
   * @return the boolean entry for <code>key</code> or null if no such entry
   *     exists
   */
  public Dimension getDimension(Object key, Locale locale) 
  {
    Object o = get(key, locale);
    return o instanceof Dimension ? (Dimension) o : null;
  }

  /**
   * Returns the ComponentUI class that renders a component. <code>id</code>
   * is the ID for which the String value of the classname is stored in
   * this UIDefaults map.
   *
   * @param id the ID of the UI class
   * @param loader the ClassLoader to use
   *
   * @return the UI class for <code>id</code>
   */
  public Class getUIClass(String id, ClassLoader loader)
  {
    String className = (String) get (id);
    if (className == null)
      return null;
    try 
      {
        if (loader == null)
          loader = ClassLoader.getSystemClassLoader();
        return loader.loadClass (className);
      }
    catch (Exception e)
      {
        return null;
      }
  }

  /**
   * Returns the ComponentUI class that renders a component. <code>id</code>
   * is the ID for which the String value of the classname is stored in
   * this UIDefaults map.
   *
   * @param id the ID of the UI class
   *
   * @return the UI class for <code>id</code>
   */
  public Class getUIClass(String id)
  {
    return getUIClass (id, null);
  }

  /**
   * If a key is requested in #get(key) that has no value, this method
   * is called before returning <code>null</code>.
   *
   * @param msg the error message
   */
  protected void getUIError(String msg)
  {
    System.err.println ("UIDefaults.getUIError: " + msg);
  }

  /**
   * Returns the {@link ComponentUI} for the specified {@link JComponent}.
   *
   * @param target the component for which the ComponentUI is requested
   *
   * @return the {@link ComponentUI} for the specified {@link JComponent}
   */
  public ComponentUI getUI(JComponent target)
  {
    String classId = target.getUIClassID ();
    Class cls = getUIClass (classId);
    if (cls == null)
      {
        getUIError ("failed to locate UI class:" + classId);
        return null;
      }

    Method factory;

    try 
      {
        factory = cls.getMethod ("createUI", new Class[] { JComponent.class } );
      }
    catch (NoSuchMethodException nme)
      {
        getUIError ("failed to locate createUI method on " + cls.toString ());
        return null;
      }

    try
      {
        return (ComponentUI) factory.invoke (null, new Object[] { target });
      }
    catch (java.lang.reflect.InvocationTargetException ite)
      {
        getUIError ("InvocationTargetException ("+ ite.getTargetException() 
		    +") calling createUI(...) on " + cls.toString ());
        return null;        
      }
    catch (Exception e)
      {
        getUIError ("exception calling createUI(...) on " + cls.toString ());
        return null;        
      }
  }

  /**
   * Adds a {@link PropertyChangeListener} to this UIDefaults map.
   * Registered PropertyChangeListener are notified when values
   * are beeing put into this UIDefaults map.
   *
   * @param listener the PropertyChangeListener to add
   */
  public void addPropertyChangeListener(PropertyChangeListener listener)
  {
    propertyChangeSupport.addPropertyChangeListener(listener);
  }

  /**
   * Removes a PropertyChangeListener from this UIDefaults map.
   *
   * @param listener the PropertyChangeListener to remove
   */
  public void removePropertyChangeListener(PropertyChangeListener listener)
  {
    propertyChangeSupport.removePropertyChangeListener(listener);
  }

  /**
   * Returns an array of all registered PropertyChangeListeners.
   *
   * @return all registered PropertyChangeListeners
   */
  public PropertyChangeListener[] getPropertyChangeListeners()
  {
    return propertyChangeSupport.getPropertyChangeListeners();
  }

  /**
   * Fires a PropertyChangeEvent.
   *
   * @param property the property name
   * @param oldValue the old value
   * @param newValue the new value
   */
  protected void firePropertyChange(String property,
				    Object oldValue, Object newValue)
  {
    propertyChangeSupport.firePropertyChange(property, oldValue, newValue);
  }

  /**
   * Adds a ResourceBundle for localized values.
   *
   * @param name the name of the ResourceBundle to add
   */
  public void addResourceBundle(String name)
  {
    bundles.addFirst(name);
  }

  /**
   * Removes a ResourceBundle.
   *
   * @param name the name of the ResourceBundle to remove
   */
  public void removeResourceBundle(String name)
  {
    bundles.remove(name);
  }

  /**
   * Sets the current locale to <code>loc</code>.
   *
   * @param loc the Locale to be set
   */
  public void setDefaultLocale(Locale loc)
  {
    defaultLocale = loc;
  }

  /**
   * Returns the current default locale.
   *
   * @return the current default locale
   */
  public Locale getDefaultLocale()
  {
    return defaultLocale;
  }
}