import java.awt.FlowLayout;
import javax.swing.*;
import javax.swing.event.*;

public class OOPStudentDelegate extends JPanel {
	private OOPStudent model = null;

	private JTextField nameField, emailField, programmeField, startField;
	private JLabel nameLabel, emailLabel, programmeLabel, startLabel;

	OOPStudentDelegate(){
		nameField = new JTextField(20); nameField.setEditable(false);
		emailField = new JTextField(10); emailField.setEditable(false);
		programmeField = new JTextField(8); programmeField.setEditable(false);
		startField = new JTextField(8);	startField.setEditable(false);

		nameLabel = new JLabel("Name:");
		emailLabel = new JLabel("Email:");
		programmeLabel = new JLabel("Programme:");
		startLabel = new JLabel("Starting semester:");

		setLayout( new VerticalFlowLayout(VerticalFlowLayout.TOP) );
		JPanel jp = new JPanel();
		jp.add(nameLabel); jp.add(nameField);
		add(jp);
		jp = new JPanel();
		jp.add(emailLabel); jp.add(emailField);
		add(jp);
		jp = new JPanel();
		jp.add(programmeLabel); jp.add(programmeField);
		add(jp);
		jp = new JPanel();
		jp.add(startLabel); jp.add(startField);
		add(jp);

		nameField.addCaretListener(new CaretListener(){
			public void caretUpdate(CaretEvent e){
				if (model != null)
					model.setName( nameField.getText() );
			}
		});
		emailField.addCaretListener(new CaretListener(){
			public void caretUpdate(CaretEvent e){
				if (model != null)
					model.setEmail( emailField.getText() );
			}
		});
		programmeField.addCaretListener(new CaretListener(){
			public void caretUpdate(CaretEvent e){
				if (model != null)
					model.setProgramme( programmeField.getText() );
			}
		});
	}

	public void setModel(OOPStudent s){
		model = s;
		if (s == null){
			nameField.setText("");  nameField.setEditable(false);
			emailField.setText("");  emailField.setEditable(false);
			programmeField.setText("");  programmeField.setEditable(false);
			startField.setText("");  startField.setEditable(false);
		}else{
			nameField.setText( model.getName() );   nameField.setEditable(true);
			emailField.setText( model.getEmail() );  emailField.setEditable(true);
			programmeField.setText( model.getProgramme() );  programmeField.setEditable(true);
			startField.setText( model.getStart() );  startField.setEditable(false);
		}
	}

}