import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class Tekst extends Frame
{	private String a;
	static String kuup, kell, kella;
   private TextArea ta;
   private TextField from, to;
   private String fnimi, rida, ridak;
		
	public Tekst()
	{	setTitle("Teksti redaktor");
	
      MenuBar mbar = new MenuBar();
      
      Menu m = new Menu("File");
      m.add(new MenuItem("New"));
      m.add(new MenuItem("Open"));
      m.add(new MenuItem("Save"));
      m.addSeparator();
      m.add(new MenuItem("Exit"));            
      mbar.add(m);
        
      m = new Menu("Edit");
      m.add(new MenuItem("Replace"));
      m.addSeparator();
      m.add(new MenuItem("Date"));
      m.add(new MenuItem("Time"));
      mbar.add(m);
	
    		
      m = new Menu("Help");
      m.add(new MenuItem("Topics"));
      m.addSeparator();
      m.add(new MenuItem("About..."));
      mbar.add(m);

      setMenuBar(mbar);
		
		ta = new TextArea(15,40);
		add("North",ta);
      
	}
   
   public boolean action(Event evt, Object arg)
   {  if (evt.target instanceof MenuItem)
      if(arg.equals("New"))
      {	ta.setText("");	    
      }
      else if(arg.equals("Open"))
      {	Open ab1 = new Open(this);
         ab1.show();
      }
      else if(arg.equals("Save"))
      {	Save ab2 = new Save(this);
         ab2.show();
 
      }
      else if(arg.equals("Replace"))
      {	Replace ab7 = new Replace(this);
         ab7.show();
      }
      else if(arg.equals("Date"))
      { 	Calendar kalender=new GregorianCalendar();
      	kuup = kalender.get(Calendar.DAY_OF_MONTH)+"-"+(1+(kalender.get(Calendar.MONTH)))+ "-"+kalender.get(Calendar.YEAR);
	      String vana = ta.getText();
      	String uus = vana + " " + kuup;
      	ta.setText(uus);
      }
      else if(arg.equals("Time"))
      {	Calendar kalender=new GregorianCalendar();
      	if (kalender.get(Calendar.MINUTE)<10)
	      	kella = "0";
		   else
		   	kella = "";
      	kell = kalender.get(Calendar.HOUR_OF_DAY)+":"+kella+kalender.get(Calendar.MINUTE)+ ":"+kalender.get(Calendar.SECOND);
	      String vana = ta.getText();
      	String uus = vana + " " + kell;
         ta.setText(uus); 
      }
      else if(arg.equals("Topics"))
      { 
      }
      else if(arg.equals("About..."))
      {	About ab9 = new About(this);
      	ab9.show();
      }
      else if(arg.equals("Exit"))	
      {	 System.exit(0);
      }
     	else return super.action(evt, arg);
      return true;
   }
	
  public static void main(String arg[])
   {  Frame f = new Tekst();
      f.setLocation(200,200);
      f.resize(400, 300);
      f.show();

   }	           
	
   public boolean handleEvent(Event evt)
   {  if (evt.id == Event.WINDOW_DESTROY 
         && evt.target == this)
         System.exit(0);
      return super.handleEvent(evt);
   }

class Open extends Dialog
	{	String fail1 = "";
		TextField failnimi = new TextField("",10);
		public Open(Frame parent)
		{	super(parent, "Open", true);
			File kataloog = new File(".");
			String failid[]=kataloog.list();
			for(int i=0; i<failid.length; i++)
				{	if(failid[i].endsWith(".txt"))
		   		fail1 = fail1 + failid[i]+"\n";
				}
   	      
      	Panel p1 = new Panel();
      	p1.add(new Label("Kodukataloog"));
      	add("North", p1);

      	Panel p2 = new Panel();
      	p2.add(new Label("Files"));
	      p2.add(new TextArea(fail1,12,10));
      	add("Center", p2);
         
      	Panel p3 = new Panel();
	      p3.add(new Label("Open"));
	      p3.add(failnimi);
      	p3.add(new Button(" Ok "));
      	add("South", p3);
	      
      	resize(200, 300);
      	setLocation(250, 300);

   	}
	   
	   public boolean action(Event evt, Object arg)
   	{  if (arg.equals(" Ok "))
      	{  fnimi = failnimi.getText();
         	Avab bc = new Avab();
	         ridak = bc.ridak;
	         ta.setText(ridak);
	      }
      	else return super.action(evt, arg);
      	dispose();
	      return true;
  		}

   	public boolean handleEvent(Event evt)
   	{  if (evt.id == Event.WINDOW_DESTROY 
         	&& evt.target == this)
         	dispose();                  
      	return super.handleEvent(evt);
   	}
	}
	
class Avab	
	{	String ridak = "";
		Avab()
		{	Avaveel();
		}
	   
	   void Avaveel()
	   {  
	      try
	      {	BufferedReader sisse=new BufferedReader(new FileReader(fnimi));
	     		rida = sisse.readLine();
	      	while(rida!=null)
	      	{ 	ridak = ridak + rida+"\n";
	      		rida = sisse.readLine();	
		   	}
		   	sisse.close();
		   }
			catch(IOException e)
			{
			}
	   }
	}
	   
class Save extends Dialog
	{	String fail1 = "";
		TextField failnimi = new TextField("",10);
		public Save(Frame parent)
		{	super(parent, "Save", true);
			File kataloog = new File(".");
			String failid[]=kataloog.list();
			for(int i=0; i<failid.length; i++)
				{	if(failid[i].endsWith(".txt"))
		   		fail1 = fail1 + failid[i]+"\n";
				}
   	      
      	Panel p1 = new Panel();
      	p1.add(new Label("Kodukataloog"));
      	add("North", p1);

      	Panel p2 = new Panel();
      	p2.add(new Label("Files"));
	      p2.add(new TextArea(fail1,12,10));
      	add("Center", p2);
         
      	Panel p3 = new Panel();
	      p3.add(new Label("Save"));
	      p3.add(failnimi);
      	p3.add(new Button(" Ok "));
      	add("South", p3);
	      
      	resize(200, 300);
      	setLocation(250, 300);

   	}
	   
	   public boolean action(Event evt, Object arg)
   	{  if (arg.equals(" Ok "))
      	{  fnimi = failnimi.getText();
         	Suleb bc = new Suleb();
	      }
      	else return super.action(evt, arg);
      	dispose();
	      return true;
  		}

   	public boolean handleEvent(Event evt)
   	{  if (evt.id == Event.WINDOW_DESTROY 
         	&& evt.target == this)
         	dispose();                  
      	return super.handleEvent(evt);
   	}
	}
	
class Suleb
	{		String ridak = "";
		Suleb()
		{	Suleveel();
		}
	   
	   void Suleveel()
	   {  
	      try
	      {	PrintWriter valja=new PrintWriter(new FileWriter(fnimi));
	     		valja.println(ta.getText());
	      	valja.close();
		   }
			catch(IOException e)
			{
			}
	   }
	}

	
class Replace extends Dialog
	{  public Replace(Frame parent)
   	{  super(parent, "Replace", true);         
      	Panel p = new Panel();
      	p.add(new Button("Replace"));
      	from = new TextField(10);
      	p.add(from);
      	p.add(new Label("with"));
      	to = new TextField(10);
      	p.add(to);
	      add("North",p);
	      
      	resize(350, 60);
      	setLocation(250, 300);
     	}
   
   	public boolean handleEvent(Event evt)
   	{  if (evt.id == Event.WINDOW_DESTROY) dispose();
      	return super.handleEvent(evt);
   	}
   
 
   	public boolean action(Event evt, Object arg)
   	{  if (arg.equals("Replace"))
      	{  String f = from.getText();
         	int n = ta.getText().indexOf(f);
         	if (n >= 0 && f.length() > 0)
            	ta.replaceText(to.getText(), n, n + f.length());
      	}
      	else return super.action(evt, arg);
      	dispose();
	      return true;
  		}
	}
	
class About extends Dialog
	{  public About(Frame parent)
   	{  super(parent, "About...", true);         
      	Panel p = new Panel(); 
	      p.setLayout(new GridLayout(5,1));
	      p.add(new Label("Programeerisid:"));
	      p.add(new Label("Laivi Käsper"));
      	p.add(new Label("Kirsti Kislenko"));
      	p.add(new Label("Maarit Kukk"));
      	p.add(new Label("Janno Rütter"));
      	add("North",p);
	      
	      add("South", new Button(" Ok "));
	            
      	resize(70, 170);
      	setLocation(250, 300);
     	}
	     
	   public boolean handleEvent(Event evt)
   	{  if (evt.id == Event.WINDOW_DESTROY) dispose();
      	return super.handleEvent(evt);
   	}
   	public boolean action(Event evt, Object arg)
   	{  if (arg.equals(" Ok "))
      	dispose();
	      return true;
  		}
	}


}