// HabTextDemo.java
// JDK 1.1/Habanero 2.0 version by Ian Chai
//
// Note: this is the Habanerization of Ian Chai's JDK 1.1 version of
//       TextDemo.java

// This version uses read/writeUTF to serialize the hablet.

package TextDemo;	// added for Habanero's convenience

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

// imports added due to Habanerization
// import ncsa.habanero.Habanero;
import ncsa.habanero.*;
import ncsa.habanero.streams.*;
import java.io.IOException;

public class HabTextDemo extends Hablet	// change Applet to Hablet
{ TextField inArea;
  TextArea outArea;

  public void init()
  { inArea = new TextField(20);
    outArea = new TextArea(5, 20);
    outArea.setEditable(false);

    inArea.addActionListener(new FieldListener());

    //Add Components to the Applet. 
    GridBagLayout gridBag = new GridBagLayout();
    setLayout(gridBag);
    GridBagConstraints c = new GridBagConstraints();
    c.gridwidth = GridBagConstraints.REMAINDER;

    c.fill = GridBagConstraints.HORIZONTAL;
    gridBag.setConstraints(inArea, c);
    add(inArea);

    c.fill = GridBagConstraints.BOTH;
    c.weightx = 1.0;
    c.weighty = 1.0;
    gridBag.setConstraints(outArea, c);
    add(outArea);

    validate();
  }

  // Each instance of this class listens to one of the TextFields.
  class FieldListener implements ActionListener
  { public void actionPerformed(ActionEvent e) 
    { TextField f;
    
      try {f = (TextField)Habanero.getSource();}
	// change getSource from the ActionEvent to Habanero
	// because marshalling loses the event's source.
      catch (ClassCastException evt)
      { outArea.append("Error: source isn't a TextField!\n");
	return;
      }

      outArea.append(e.getActionCommand()+"\n");
	// change because if we did the original f.getText() we
	// would get the text from the *local* copy of the field
	// and not the one in the original Hablet.
      f.selectAll();
    }
  }

  // added all the methods below this line

  protected void writeHablet(MarshallOutputStream out) throws IOException
  { out.writeUTF(outArea.getText());
  }

  protected void readHablet(MarshallInputStream in) throws IOException
  { outArea.setText(in.readUTF());
  }

  public void startInFrame(MirrorFrame f)
  {
    f.setTitle("Habanerized TextDemo");

    f.add("Center", this);	// Center hablet in window
    f.setSize(500,200);		// Window's size
    f.setVisible(true);		// Window initially visible

    f.show();			// Show the window

    init();			// Initialize hablet code
    start();			// Start hablet running

    try
    { Habanero.addSharedEventType(
        Class.forName("java.awt.event.ActionEvent"), this);
    }
    catch (ClassNotFoundException e)
    { Habanero.println("could not find ActionEvent class object.");
    }
  }
}