import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
public class Puu3 extends JPanel 
     implements TreeSelectionListener, ItemListener{
   JTree puu;
   JTextField tf=new JTextField(10);
   JTextArea ala=new JTextArea();
   FailiMenyyMudel menyymudel=new FailiMenyyMudel();
   JComboBox asukohavalik;
   public Puu3(){
      JSplitPane jagaja=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
      JPanel parempaneel=new JPanel(new BorderLayout());
      parempaneel.add(tf, BorderLayout.NORTH);
      parempaneel.add(new JScrollPane(ala), BorderLayout.CENTER);
      JPanel vasakpaneel=new JPanel(new BorderLayout());
      asukohavalik=new JComboBox(menyymudel); 
      asukohavalik.setEditable(true);      
      asukohavalik.addItemListener(this);
      puu=new JTree(new FailipuuMudel("d:\\"));
      vasakpaneel.add(asukohavalik, BorderLayout.NORTH);
      vasakpaneel.add(new JScrollPane(puu), BorderLayout.CENTER);
      jagaja.setLeftComponent(vasakpaneel);
      jagaja.setRightComponent(parempaneel);
      puu.addTreeSelectionListener(this);
      setLayout(new java.awt.BorderLayout());
      add(jagaja);
//      add(tf);
   }
   public void itemStateChanged(ItemEvent e){
      puu.setModel(new FailipuuMudel(e.getItem().toString()));
   }
   public void valueChanged(TreeSelectionEvent e){
      Object[] jada=puu.getSelectionPath().getPath();
      StringBuffer sb=new StringBuffer(jada[0].toString());
      for(int i=1; i<jada.length; i++){
        sb.append(" -> "+jada[i]);
      }
      tf.setText(sb.toString());
    try{
      File f=(File)puu.getSelectionPath().getLastPathComponent();
      if(f.isFile()){
         BufferedReader failist=new BufferedReader(new FileReader(f));
         StringBuffer sb2=new StringBuffer();
         for(String rida=failist.readLine(); rida!=null; rida=failist.readLine()){
            sb2.append(rida+"\n");
         }
         ala.setText(sb2.toString());
         failist.close();
      }
    }catch(Exception ex){ex.printStackTrace();}
   }
   
   
   public static void main(String[] arg){
      JFrame f=new JFrame("Puu");
      f.add(new Puu3());
      f.setSize(400, 400);
      f.setVisible(true);
   }
}