dockingnode.java

定要上载质量高而定要上载质量高而定要上载质量高而定要上载质量高而定要上载质量高而

/*
 * Created on May 28, 2005
 */
package org.flexdock.docking.state.tree;

import java.util.Enumeration;

import javax.swing.tree.DefaultMutableTreeNode;

import org.flexdock.docking.DockingConstants;
import org.flexdock.docking.state.LayoutNode;

/**
 * @author Christopher Butler
 */
public abstract class DockingNode extends DefaultMutableTreeNode implements LayoutNode, DockingConstants {

	public Object getUserObject() {
		Object obj = super.getUserObject();
		if(obj==null) {
			obj = getDockingObject();
			setUserObject(obj);
		}
		return obj;
	}

	public abstract Object getDockingObject();

    protected abstract DockingNode shallowClone();
	
	public Object clone() {
		return deepClone();
	}
	
	public DockingNode deepClone() {
		DockingNode clone = shallowClone();
		for(Enumeration en=children(); en.hasMoreElements();) {
			DockingNode child = (DockingNode)en.nextElement();
			clone.add(child.deepClone());
		}
		return clone;		
	}
    
}