/* TestGUI.java: test for ClassOfStudents2 example of using arrays
 *
 * Author:     David Aspinall
 * Copyright:  University of Edinburgh
 * Version:    TestGUI.java,v 1.7 2002/11/19 12:29:20 pbj Exp
 *
 */

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

class TestGUI extends JFrame {
    ClassOfStudents2 testclass = new ClassOfStudents2();  

    // Two helper methods
    static String inputString(String message) {
	return JOptionPane.showInputDialog(null, message);
    }
    static void showMessage(String message, String title) {
	JOptionPane.showMessageDialog(
           null, message, title, JOptionPane.PLAIN_MESSAGE);
    }
    void addNewStudent() { // add a student to testclass
	Student newstud = new Student();
	newstud.surname  = 
	    inputString("Surname of new student:");
	newstud.forename = 
	    inputString("Forename of new student:");
	newstud.matricno = 
	    inputString("Matriculation number of new student:");
	testclass.insert(newstud);
    }
    void findStudent() { // search for a student in testclass
	String surname = 
	    inputString("Search for student with surname:");
	Student s = testclass.find(surname);
	if (s != null) {
	    showMessage(s.toString(), "Found student");
	} else {
	    showMessage("No student with surname " + surname, 
			"Could not find student");
	}
    }

    // Constructor for GUI
    public TestGUI() {
	this.setTitle("Using Arrays Example");
	this.setSize(new Dimension(250, 100));
	JPanel buttonsPanel = (JPanel) this.getContentPane();
	buttonsPanel.setLayout( new GridLayout(2,1) );
	JButton addStudent = new JButton("Add new student");
	addStudent.addActionListener(
           new ActionListener() {
	       public void actionPerformed(ActionEvent e) {
		   addNewStudent();
	       }
	   });
        buttonsPanel.add(addStudent);
	JButton findStudent = new JButton("Find student");
	findStudent.addActionListener(
           new ActionListener() {
	       public void actionPerformed(ActionEvent e) {
		   findStudent();
	       }
	   });
        buttonsPanel.add(findStudent);
	// Exit app when frame is closed
	this.addWindowListener(new WindowAdapter() {
		public void windowClosing(WindowEvent ev) {
		    System.exit(0);
		}
	    });
    } // end of constructor

    public static void main(String[] args) {
	TestGUI gui = new TestGUI();
	gui.setVisible(true);
    }
}