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package org.jfree.layouting.util;
import java.util.Map;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class LazyAttributeMap extends AttributeMap
{
private AttributeMap lazyMap;
public LazyAttributeMap(final AttributeMap copy)
{
if (copy == null)
{
return;
}
if (copy.isReadOnly() == false)
{
copyInto(copy);
return;
}
lazyMap = copy;
}
public Object setAttribute(final String namespace, final String attribute, final Object value)
{
if (isReadOnly())
{
throw new IllegalStateException();
}
if (lazyMap != null)
{
copyInto(lazyMap);
lazyMap = null;
}
return super.setAttribute(namespace, attribute, value);
}
public AttributeMap createUnmodifiableMap()
{
if (lazyMap != null)
{
return lazyMap;
}
return super.createUnmodifiableMap();
}
public boolean isEmpty()
{
if (lazyMap != null)
{
return lazyMap.isEmpty();
}
return super.isEmpty();
}
public Object getAttribute(final String namespace, final String attribute)
{
if (lazyMap != null)
{
return lazyMap.getAttribute(namespace, attribute);
}
return super.getAttribute(namespace, attribute);
}
public Object getFirstAttribute(final String attribute)
{
if (lazyMap != null)
{
return lazyMap.getFirstAttribute(attribute);
}
return super.getFirstAttribute(attribute);
}
public Map getAttributes(final String namespace)
{
if (lazyMap != null)
{
return lazyMap.getAttributes(namespace);
}
return super.getAttributes(namespace);
}
public String[] getNameSpaces()
{
if (lazyMap != null)
{
return lazyMap.getNameSpaces();
}
return super.getNameSpaces();
}
public long getChangeTracker()
{
if (lazyMap != null)
{
return lazyMap.getChangeTracker();
}
return super.getChangeTracker();
}
}
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