mytreemodellistener.java

来自「图书管理系统毕业设计源代码,图书管理系统毕业设计源代码图书管理系统毕业设计源代码」· Java 代码 · 共 51 行

/*
 * MyTreeModelListener.java
 *
 * Created on 2006年4月27日, 上午7:56
 *
 * 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 myClass;

/**
 *
 * @author wang
 */
import javax.swing.tree.*;
import javax.swing.event.*;
public class MyTreeModelListener implements TreeModelListener  {
    
    /** Creates a new instance of MyTreeModelListener */
     public void treeNodesChanged(TreeModelEvent e) {
            DefaultMutableTreeNode node;
            node = (DefaultMutableTreeNode)
                     (e.getTreePath().getLastPathComponent());

            /*
             * If the event lists children, then the changed
             * node is the child of the node we've already
             * gotten.  Otherwise, the changed node and the
             * specified node are the same.
             */
            try {
                int index = e.getChildIndices()[0];
                node = (DefaultMutableTreeNode)
                       (node.getChildAt(index));
            } 
            catch (NullPointerException exc) {}

            System.out.println("The user has finished editing the node.");
            System.out.println("New value: " + node.getUserObject());
        }
        public void treeNodesInserted(TreeModelEvent e) {
        }
        public void treeNodesRemoved(TreeModelEvent e) {
        }
        public void treeStructureChanged(TreeModelEvent e) {
        }
}