// SimpleTextField.java
package util;

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


public class SimpleTextField extends Panel
{
    public static final int PADDING = 5;

    public SimpleTextField (String label)
    {
       super();
       init(label, "");
    }

    public SimpleTextField (String label, String initText)
    {
       super();
       init(label, initText);
    }

    public String getText ()
    {
       return myField.getText();
    }

    public void setText (String text)
    {
       myField.setText(text);
    }

    public String getLabel ()
    {
       return myLabel.getText();
    }

    public void setLabel (String text)
    {
       myLabel.setText(text);
    }

    // do nothing by default
    public void actionPerformed (String text)
    {}


    private void init (String label, String initText)
    {
       myLabel = new Label(label);
       myField = new TextField(initText, initText.length() + PADDING);

       setLayout(new BorderLayout());
       add("West", myLabel);
       add("Center", myField);
       
       myField.addActionListener(
          new ActionListener()
          {
             public void actionPerformed(ActionEvent e)
             {
                SimpleTextField.this.actionPerformed(((TextField)e.getSource()).getText());
             }
          });
       myField.addTextListener(
          new TextListener()
          {
             public void textValueChanged(TextEvent e)
             {
                SimpleTextField.this.textValueChanged(((TextField)e.getSource()).getText());
	     }
	  });
    }

    protected void textValueChanged (String text)
    {
       if (myField.getColumns() == text.length())
       {
	  myField.setColumns(myField.getColumns() + 2);
       }
    }

    private Label myLabel;
    private TextField myField;
}