mytreemodellistener.java

来自「动画素材图像语义标注系统：该系统实现对图片的语义标注」· Java 代码 · 共 39 行

package cn.dxm.util;

import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.DefaultMutableTreeNode;

public class MyTreeModelListener implements TreeModelListener {
	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) {
			exc.printStackTrace();

		}

		System.out.println("the selected node's name is:"+node.getUserObject().toString());
		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) {
	}
}