package com.test;

import java.awt.Component;
import java.awt.Image;

import javax.swing.ImageIcon;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;

public class TreeImageRender extends DefaultTreeCellRenderer   {
	
	public TreeImageRender(){
		ICON_COMPUTER.setImage(ICON_COMPUTER.getImage().getScaledInstance(20, 20, Image.SCALE_DEFAULT));
	}
	public static final ImageIcon ICON_COMPUTER =  new ImageIcon(TreeImageRender.class.getResource("/com/test/tree2.png"));

	@Override
	public Component getTreeCellRendererComponent(JTree tree, Object value,  
            boolean sel, boolean expanded, boolean leaf, int row,  
            boolean hasFocus) {
		// TODO Auto-generated method stub
		
		
		
        //执行父类原型操作  
        super.getTreeCellRendererComponent( tree,  value,  
                 sel,  expanded,  leaf,  row,  
                 hasFocus);  
  
        setText(value.toString());  
          
        if (sel)  
        {  
            setForeground(getTextSelectionColor());  
        }  
        else  
        {  
            setForeground(getTextNonSelectionColor());  
        }  
          
        //得到每个节点的TreeNode  
        MyDefaultTreeModel node = (MyDefaultTreeModel) value;  
          
        //得到每个节点的text  
        String str = node.toString();         
          
      
        setIcon(ICON_COMPUTER);
        return this;  
	}

}