import java.awt.event.*;
import javax.swing.tree.*;
import javax.swing.*;
import javax.swing.JPanel;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.event.*;
public class TreeWindows extends JFrame implements TreeSelectionListener{
	JSplitPane jSplitPane1=new JSplitPane();
	JScrollPane jScrollPane1=new JScrollPane();
	WelcomePane welcomePane1=new WelcomePane();
	DefaultMutableTreeNode rootNode=new DefaultMutableTreeNode("本系統處理模塊   ");
	JTree jTree1=new JTree(rootNode);
	TreeWindows()
	{
		super("流行的Tree窗口");
		setSize(600,500);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		getContentPane().add(jSplitPane1);
		jSplitPane1.setLeftComponent(jScrollPane1);
		jSplitPane1.setRightComponent(welcomePane1);
		jScrollPane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
		jScrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		jScrollPane1.getViewport().setView(jTree1);
		
		initTree();
		jTree1.expandRow(0);
		jTree1.expandRow(1);
		jTree1.expandRow(6);
		jTree1.addTreeSelectionListener(this);
		show();
		
	}
	void initTree()
	{
		DefaultMutableTreeNode childNode1=new DefaultMutableTreeNode("項目監控");
		rootNode.add(childNode1);
		DefaultMutableTreeNode childNode2=new DefaultMutableTreeNode("項目計劃");
		childNode1.add(childNode2);
		childNode2=new DefaultMutableTreeNode("項目核定");
		childNode1.add(childNode2);
		childNode2=new DefaultMutableTreeNode("每日監視");
		childNode1.add(childNode2);
		childNode2=new DefaultMutableTreeNode("進展匯報");
		childNode1.add(childNode2);
		childNode1=new DefaultMutableTreeNode("項目核算");
		rootNode.add(childNode1);
		childNode2=new DefaultMutableTreeNode("成本錄入");
		childNode1.add(childNode2);
		childNode2=new DefaultMutableTreeNode("成本復核");
		childNode1.add(childNode2);
		childNode2=new DefaultMutableTreeNode("賬目查閱");
		childNode1.add(childNode2);
	}
	public void valueChanged(TreeSelectionEvent e)
	{
		DefaultMutableTreeNode selecteNode=
			(DefaultMutableTreeNode)jTree1.getLastSelectedPathComponent();
		if (selecteNode.toString()=="項目計劃")
		{
			PlanPane planPane1=new PlanPane();
			jSplitPane1.setRightComponent(planPane1);
		}
		else if (selecteNode.toString()=="項目核定")
		{
			PlanCheck planCheck1=new PlanCheck();
			jSplitPane1.setRightComponent(planCheck1);
		}
	}



public static void main(String[] agrs)
{
	TreeWindows treewindow=new TreeWindows();
}
}
class WelcomePane extends JPanel{
	JLabel jLabel1=new JLabel("生產項目管理系統---welcome");
	WelcomePane()
	{
		add(jLabel1);
	}
	
}

class PlanPane extends JPanel implements ActionListener{
	JButton jButton1=new JButton("項目計劃");
	PlanPane()
	{
		jButton1.addActionListener(this);
		add(jButton1);
		
	}
	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource()==jButton1)
		{
			System.out.println("項目計劃按鈕被單擊");
		}
	}
}

class PlanCheck extends JPanel implements ActionListener{
	JButton jButton1=new JButton("項目核定");
	PlanCheck()
	{
		jButton1.addActionListener(this);
		add(jButton1);
		
	}
	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource()==jButton1)
		{
			System.out.println("項目核定按鈕被單擊");
		}
	}
}