import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import java.lang.*;
import javax.swing.filechooser.FileFilter;
import javax.swing.*;


public class uusredaktor extends JApplet implements ActionListener,TextListener{
    String failinimi;
    int akendeArv=1;
    TextArea tekstivali1=new TextArea();
    TextArea tekstivali2=new TextArea();
    TextArea tekstivali3=new TextArea();
    TextArea tekstivali4=new TextArea();
    TextArea tekstivali5=new TextArea();
    TextArea tekstivali6=new TextArea();
    JButton   uus=new JButton("Uus");
    JButton   ava=new JButton("Ava");
    JButton   sulge=new JButton("Sulge");
    JButton   salvesta=new JButton("Salvesta");
    
    
    
    JTabbedPane paneel2=new JTabbedPane();  
    JPanel p1=new JPanel(new GridLayout(1,3));
    JSplitPane paneel=new JSplitPane(JSplitPane.VERTICAL_SPLIT,p1,paneel2);


 TextArea valjad[]=new TextArea[]{tekstivali1, tekstivali2,tekstivali3,tekstivali4,tekstivali5,tekstivali6};
    
      
    public uusredaktor(){   
    	ava.addActionListener(this);
    	salvesta.addActionListener(this);
        sulge.addActionListener(this);
        uus.addActionListener(this);
    	tekstivali1.addTextListener(this);
    	tekstivali2.addTextListener(this);
    	tekstivali3.addTextListener(this);
    	tekstivali4.addTextListener(this);
    	tekstivali5.addTextListener(this);
    	tekstivali6.addTextListener(this);
    	uus.setEnabled(true);
        ava.setEnabled(true);
        sulge.setEnabled(false);
    	salvesta.setEnabled(false);
        
    	p1.add(uus);
        p1.add(ava);
        p1.add(sulge);
    	p1.add(salvesta);
         
    	getContentPane().add(paneel);
    }


    public void avaAken(String failinimi, int number, String rida)
           {
   	     if (failinimi.length()>0)
             {
   	      paneel2.add(failinimi,valjad[number]);
              valjad[number].setText(rida+"\n");
   	     } 
   	   }
   
  
    public void sulgeAken(int number)
           {
   	    paneel2.remove(number);  
   	   }








public void textValueChanged(TextEvent m){


				

if(paneel2.getTabCount()>0){
sulge.setEnabled(true);

salvesta.setEnabled(true);

}

if(paneel2.getTabCount()==6){
   uus.setEnabled(false);
   ava.setEnabled(false);}

 				



}



  
  public void actionPerformed (ActionEvent e) 
 {
    if(e.getSource()==ava)
      {
        JFileChooser valija=new JFileChooser(new File("."));
        valija.addChoosableFileFilter(new Pildifilter());
        valija.showDialog(new JFrame(), "Ava");
        System.out.println("Valiti "+valija.getSelectedFile());     
	  try{
	       BufferedReader sisse=new BufferedReader(
               new FileReader(valija.getSelectedFile()));
               String tulemus=" ";
               for(String rida=sisse.readLine(); rida!=null; rida=sisse.readLine())
                  {
    	            tulemus=tulemus+rida+"\n";
    		  }
               System.out.println(tulemus);    
               
               avaAken(valija.getSelectedFile().getName(), paneel2.getTabCount(),tulemus); 
               
               sisse.close();
             }catch(IOException viga){viga.printStackTrace();}	
       }
    
      if(e.getSource()==salvesta){
    	

      JFileChooser valija3=new JFileChooser(new File("."));
       valija3.addChoosableFileFilter(new Pildifilter());
       valija3.showDialog(new JFrame(), "Salvesta");
       System.out.println("Valiti "+valija3.getSelectedFile());     
	try{
			
		PrintWriter faili=new PrintWriter(
						  new FileWriter(valija3.getSelectedFile()));
		faili.println(valjad[paneel2.getSelectedIndex()].getText());
		faili.close();
	}catch(IOException viga){viga.printStackTrace();}
     
  
 }  

    if (e.getSource()==sulge)
      
	{      
        if (paneel2.getTabCount()>0)
          { 
  	   sulgeAken(paneel2.getSelectedIndex());
           
  	  }
        if(paneel2.getTabCount()<6){
   
        uus.setEnabled(true);
        ava.setEnabled(true);} 
        
        if(paneel2.getTabCount()==0)
        {sulge.setEnabled(false);
         salvesta.setEnabled(false);
         
        }
}
    
    if (e.getSource()==uus)
      { 
        avaAken("Nimetu", (paneel2.getTabCount()),"");
      }
 }

   class Pildifilter extends FileFilter
{
   public boolean accept(File f)
  {
    String failinimi=f.getName();
      if(failinimi.endsWith(".txt"))
           return true;
      else return false;
  }
   public String getDescription()
  {
    return ".txt ";
  }
} 

 






  public static void main(String argumendid[])
{
   JFrame f=new JFrame("Redaktor"); 
   f.getContentPane().add(new uusredaktor());
   f.setSize(500, 300);
   f.setVisible(true);
}

}