import java.io.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
public class Puu2 extends JPanel implements TreeSelectionListener{
  JTree puu=new JTree(new FailipuuMudel());;
  JTextArea ala=new JTextArea();
  JSplitPane jaotuspaneel=new JSplitPane();
  public Puu2(){
     jaotuspaneel.setLeftComponent(new JScrollPane(puu));
     jaotuspaneel.setRightComponent(new JScrollPane(ala));
     setLayout(new java.awt.BorderLayout());
     add(jaotuspaneel);
     puu.addTreeSelectionListener(this);
  }
  public void valueChanged(TreeSelectionEvent e){
     File f=(File)puu.getLastSelectedPathComponent();
     if(!f.isFile()){return;}
     try{
       StringBuffer puhver=new StringBuffer();
       BufferedReader failist=new BufferedReader(new FileReader(f));
       for(String rida=failist.readLine(); rida!=null; rida=failist.readLine()){
         puhver.append(rida+"\n");
       }       
       failist.close();
       ala.setText(puhver.toString());
     }catch(IOException ioe){
       ioe.printStackTrace();
     }
  }
  public static void main(String[] arg){
     JFrame f=new JFrame("puu");
     f.add(new Puu2());
     f.setSize(500, 500);
     f.setVisible(true);
  }
}