package javax.swing;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Insets;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.lang.reflect.Method;
import java.util.Hashtable;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.Set;
import javax.swing.border.Border;
import javax.swing.plaf.ComponentUI;
public class UIDefaults extends Hashtable
{
private LinkedList bundles;
private Locale defaultLocale;
private PropertyChangeSupport propertyChangeSupport;
public interface ActiveValue
{
Object createValue(UIDefaults table);
}
public static class LazyInputMap implements LazyValue
{
Object[] bind;
public LazyInputMap(Object[] bindings)
{
bind = bindings;
}
public Object createValue(UIDefaults table)
{
InputMap im = new InputMap ();
for (int i = 0; 2*i+1 < bind.length; ++i)
{
im.put (KeyStroke.getKeyStroke ((String) bind[2*i]),
bind[2*i+1]);
}
return im;
}
}
public interface LazyValue
{
Object createValue(UIDefaults table);
}
public static class ProxyLazyValue implements LazyValue
{
LazyValue inner;
public ProxyLazyValue(String s)
{
final String className = s;
inner = new LazyValue ()
{
public Object createValue (UIDefaults table)
{
try
{
return Class
.forName (className)
.getConstructor (new Class[] {})
.newInstance (new Object[] {});
}
catch (Exception e)
{
return null;
}
}
};
}
public ProxyLazyValue(String c, String m)
{
final String className = c;
final String methodName = m;
inner = new LazyValue ()
{
public Object createValue (UIDefaults table)
{
try
{
return Class
.forName (className)
.getMethod (methodName, new Class[] {})
.invoke (null, new Object[] {});
}
catch (Exception e)
{
return null;
}
}
};
}
public ProxyLazyValue (String c, Object[] os)
{
final String className = c;
final Object[] objs = os;
final Class[] clss = new Class[objs.length];
for (int i = 0; i < objs.length; ++i)
{
clss[i] = objs[i].getClass ();
}
inner = new LazyValue ()
{
public Object createValue (UIDefaults table)
{
try
{
return Class
.forName (className)
.getConstructor (clss)
.newInstance (objs);
}
catch (Exception e)
{
return null;
}
}
};
}
public ProxyLazyValue (String c, String m, Object[] os)
{
final String className = c;
final String methodName = m;
final Object[] objs = os;
final Class[] clss = new Class[objs.length];
for (int i = 0; i < objs.length; ++i)
{
clss[i] = objs[i].getClass ();
}
inner = new LazyValue ()
{
public Object createValue(UIDefaults table)
{
try
{
return Class
.forName (className)
.getMethod (methodName, clss)
.invoke (null, objs);
}
catch (Exception e)
{
return null;
}
}
};
}
public Object createValue (UIDefaults table)
{
return inner.createValue (table);
}
}
private static final long serialVersionUID = 7341222528856548117L;
public UIDefaults()
{
bundles = new LinkedList ();
defaultLocale = Locale.getDefault ();
propertyChangeSupport = new PropertyChangeSupport(this);
}
public UIDefaults(Object[] entries)
{
this();
for (int i = 0; (2*i+1) < entries.length; ++i)
put (entries[2*i], entries[2*i+1]);
}
public Object get(Object key)
{
return this.get (key, getDefaultLocale ());
}
public Object get (Object key, Locale loc)
{
Object obj = null;
if (super.containsKey (key))
{
obj = super.get (key);
}
else if (key instanceof String)
{
String keyString = (String) key;
ListIterator i = bundles.listIterator (0);
while (i.hasNext ())
{
String bundle_name = (String) i.next ();
ResourceBundle res =
ResourceBundle.getBundle (bundle_name, loc);
if (res != null)
{
try
{
obj = res.getObject (keyString);
break;
}
catch (MissingResourceException me)
{
}
}
}
}
if (obj == null)
return null;
if (obj instanceof LazyValue)
{
Object resolved = ((LazyValue)obj).createValue (this);
super.remove (key);
super.put (key, resolved);
return resolved;
}
else if (obj instanceof ActiveValue)
{
return ((ActiveValue)obj).createValue (this);
}
return obj;
}
public Object put(Object key, Object value)
{
Object old = super.put (key, value);
if (key instanceof String && old != value)
firePropertyChange ((String) key, old, value);
return old;
}
public void putDefaults(Object[] entries)
{
for (int i = 0; (2*i+1) < entries.length; ++i)
{
super.put (entries[2*i], entries[2*i+1]);
}
firePropertyChange ("UIDefaults", null, null);
}
public Font getFont(Object key)
{
Object o = get(key);
return o instanceof Font ? (Font) o : null;
}
public Font getFont(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof Font ? (Font) o : null;
}
public Color getColor(Object key)
{
Object o = get(key);
return o instanceof Color ? (Color) o : null;
}
public Color getColor(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof Color ? (Color) o : null;
}
public Icon getIcon(Object key)
{
Object o = get(key);
return o instanceof Icon ? (Icon) o : null;
}
public Icon getIcon(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof Icon ? (Icon) o : null;
}
public Border getBorder(Object key)
{
Object o = get(key);
return o instanceof Border ? (Border) o : null;
}
public Border getBorder(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof Border ? (Border) o : null;
}
public String getString(Object key)
{
Object o = get(key);
return o instanceof String ? (String) o : null;
}
public String getString(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof String ? (String) o : null;
}
public int getInt(Object key)
{
Object o = get(key);
return o instanceof Integer ? ((Integer) o).intValue() : 0;
}
public int getInt(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof Integer ? ((Integer) o).intValue() : 0;
}
public boolean getBoolean(Object key)
{
return Boolean.TRUE.equals(get(key));
}
public boolean getBoolean(Object key, Locale l)
{
return Boolean.TRUE.equals(get(key, l));
}
public Insets getInsets(Object key)
{
Object o = get(key);
return o instanceof Insets ? (Insets) o : null;
}
public Insets getInsets(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof Insets ? (Insets) o : null;
}
public Dimension getDimension(Object key)
{
Object o = get(key);
return o instanceof Dimension ? (Dimension) o : null;
}
public Dimension getDimension(Object key, Locale l)
{
Object o = get(key, l);
return o instanceof Dimension ? (Dimension) o : null;
}
public Class getUIClass(String id, ClassLoader loader)
{
String className = (String) get (id);
if (className == null)
return null;
try
{
if (loader != null)
return loader.loadClass (className);
return Class.forName (className);
}
catch (Exception e)
{
return null;
}
}
public Class getUIClass(String id)
{
return getUIClass (id, null);
}
protected void getUIError(String msg)
{
System.err.println ("UIDefaults.getUIError: " + msg);
}
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;
}
}
public void addPropertyChangeListener(PropertyChangeListener listener)
{
propertyChangeSupport.addPropertyChangeListener(listener);
}
void removePropertyChangeListener(PropertyChangeListener listener)
{
propertyChangeSupport.removePropertyChangeListener(listener);
}
public PropertyChangeListener[] getPropertyChangeListeners()
{
return propertyChangeSupport.getPropertyChangeListeners();
}
protected void firePropertyChange(String property,
Object oldValue, Object newValue)
{
propertyChangeSupport.firePropertyChange(property, oldValue, newValue);
}
public void addResourceBundle(String name)
{
bundles.addFirst (name);
}
public void removeResourceBundle(String name)
{
bundles.remove (name);
}
public void setDefaultLocale(Locale loc)
{
defaultLocale = loc;
}
public Locale getDefaultLocale()
{
return defaultLocale;
}
}