treepanelimpl.java

来自「一个可以存储和打印成绩单的系统」· Java 代码 · 共 76 行

package org.minjey.cjsjk.view.tree;

import java.awt.BorderLayout;
import java.util.Properties;

import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;

import org.minjey.cjsjk.util.PropertyDict;
import org.minjey.cjsjk.util.PropertyLoader;
import org.minjey.cjsjk.view.tree.node.MyTreeNode;
import org.minjey.cjsjk.view.tree.node.Node4Root;

public class TreePanelImpl extends JPanel implements TreePanel{
	
	private JTree tree;
	
	private Properties properties;
	
	public TreePanelImpl() {
		properties = PropertyLoader.loadSystemProperty();
		buildDefaultTree();
	}
	
	public JTree getTree() {
		return tree;
	}

	public void buildDefaultTree() {
		removeAll();
		
		System.out.println("Attempt To Build Tree Panel.");
		
		String roottext = properties.getProperty(PropertyDict.TROOTTEXT);
		roottext = roottext + properties.getProperty(PropertyDict.DBDBNAME);
		
		Node4Root root = new Node4Root(roottext);
		//MyDefaultTreeNode root = new MyDefaultTreeNode(roottext);
		//root.buildChildren();
		//
		////Enumeration ec = root.children();
		//while(ec.hasMoreElements()) {
		//	MyDefaultTreeNode cnode = (MyDefaultTreeNode)ec.nextElement();
		//	cnode.add(new Node4Virtual());
		//}
		
		tree = new JTree(root);
		tree.addTreeWillExpandListener(new TreeExpantionListener());
		JScrollPane jsp = new JScrollPane(tree);
		setLayout(new BorderLayout());
		add(jsp, BorderLayout.CENTER);
		this.updateUI();
		tree.addMouseListener(new TreeMouseListener());
	}
	
	public void addNode(MyTreeNode node) {
		NodeFactory factory = NodeFactory.getNodeFactory();
		if(factory.isNodeObject(node.getUserObject())) {
			Node4Root root = (Node4Root)tree.getModel().getRoot();
			root.addNode(node);
		}
		tree.updateUI();
	}
	
	public void removeNode(MyTreeNode node) {
		NodeFactory factory = NodeFactory.getNodeFactory();
		if(factory.isNodeObject(node.getUserObject())) {
			Node4Root root = (Node4Root)tree.getModel().getRoot();
			root.deleteNode(node);
		}
		tree.updateUI();
	}
	
}