/*
 * Gary Cornell and Cay S. Horstmann, Core Java (Book/CD-ROM)
 * Published By SunSoft Press/Prentice-Hall
 * Copyright (C) 1996 Sun Microsystems Inc.
 * All Rights Reserved. ISBN 0-13-565755-5
 *
 * Permission to use, copy, modify, and distribute this 
 * software and its documentation for NON-COMMERCIAL purposes
 * and without fee is hereby granted provided that this 
 * copyright notice appears in all copies. 
 * 
 * THE AUTHORS AND PUBLISHER MAKE NO REPRESENTATIONS OR 
 * WARRANTIES ABOUT THE SUITABILITY OF THE SOFTWARE, EITHER 
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE AUTHORS
 * AND PUBLISHER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED 
 * BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING 
 * THIS SOFTWARE OR ITS DERIVATIVES.
 */
 
/**
 * @version 1.00 07 Feb 1996 
 * @author Cay Horstmann
 */

import java.awt.*;

public class DataExchangeTest extends Frame 
   implements ResultProcessor
{  public DataExchangeTest()
   {  setTitle("DataExchangeTest");

      Panel p = new Panel();
      p.setLayout(new FlowLayout(FlowLayout.LEFT));
      p.add(new Button("Connect"));
      p.add(new Button("Close"));            
      add("North", p);
   }

   public boolean action(Event evt, Object arg)
   {  if (arg.equals("Connect"))
      {   ConnectInfo in = new ConnectInfo("yourname", "");
          ConnectDialog pd = new ConnectDialog(this, in);
          pd.show();
      }
      else if(arg.equals("Close"))
         System.exit(0);
      else return super.action(evt, arg);
      return true;
   }

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

   public void processResult(Dialog source, Object result)
   {  if (source instanceof ConnectDialog)
      {  ConnectInfo info = (ConnectInfo)result;
         System.out.println(info.username + " " 
            + info.password);  
      }
   }

   public static void main(String args[])
   {  Frame f = new DataExchangeTest();
      f.resize(300, 200);
      f.show();
   }
}

interface ResultProcessor
{  public void processResult(Dialog source, Object obj);
}

class ConnectInfo
{  public String username;
   public String password;
   public ConnectInfo(String u, String p) 
      { username = u; password = p; }
}   
                        
class ConnectDialog extends Dialog
{  public ConnectDialog(DataExchangeTest parent, 
      ConnectInfo u)
   {  super(parent, "Connect", true);         
      Panel p1 = new Panel();
      p1.setLayout(new GridLayout(2, 2));
      p1.add(new Label("User name:"));
      p1.add(username = new TextField(u.username, 8));
      p1.add(new Label("Password:"));
      p1.add(password = new TextField(u.password, 8));
      add("Center", p1);
      
      Panel p2 = new Panel();
      p2.add(new Button("Ok"));
      p2.add(new Button("Cancel"));
      add("South", p2);
      resize(240, 120);
   }

   public boolean action(Event evt, Object arg)
   {  if(arg.equals("Ok"))
      {  dispose();
         ((ResultProcessor)getParent()).processResult(this, 
            new ConnectInfo(username.getText(), 
               password.getText())); 
      }
      else if (arg.equals("Cancel"))
         dispose();
      else return super.action(evt, arg);
      return true;
   }
        
   public boolean handleEvent(Event evt)
   {  if (evt.id == Event.WINDOW_DESTROY)
         dispose();
      else return super.handleEvent(evt);
      return true;
   }

   private TextField username;
   private TextField password;
}