defaultsortablecolumn.java

Java mulitplayer strategy game. Adaptation of KDE Galaxy Conquest. (rules are changed - but still th

/*
 * DefaultSortableColumn.java
 *
 * Created on 30 pa焏ziernik 2005, 11:40
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package net.sf.jawp.gui.client.data;

import java.util.Comparator;

import javax.swing.table.TableCellRenderer;

import net.sf.jawp.gf.api.Entity;

/**
 *
 * @author jarek
 * @param <ENTITY> entity type 
 */
public abstract class DefaultSortableColumn<ENTITY extends Entity> 
	implements SortableColumn<ENTITY>, Comparator<ENTITY>
	
{
	private final String name;
	
	protected DefaultSortableColumn()
	{
		this.name = "unknown";
	}
	
	protected DefaultSortableColumn(final String nm )
	{
		this.name = nm;
	}
	
	public java.util.Comparator<ENTITY> getComparator()
	{
		return this;
	}

	public String getName()
	{
		return this.name;
	}

	@SuppressWarnings("unchecked")
	public int compare(final ENTITY e1, final ENTITY e2)
	{
		final Object o1 = getValue(e1);
		final Object o2 = getValue(e2);
		if ( o1 instanceof Comparable)
		{
			return ((Comparable)o1).compareTo( (Comparable)o2);
		}
		throw new UnsupportedOperationException();
	}

	public boolean hasChanged(final ENTITY old, final ENTITY newObject)
	{
		final Object o1 = getValue(old);
		final Object o2 = getValue(newObject);
		return !o1.equals( o2);
	}

	/**
	 * {@inheritDoc}
	 */
	public TableCellRenderer getCellRenderer()
	{
		return null;
	}
	
	
	
}