/*
    Panel1.java
    CIS 160
    David Klick
    2011-09-24

    Demonstrates nested containers for GUI layout,
    radio buttons, button groups, combo boxes,
    a WindowListener, and packing.
*/

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.SwingUtilities;

public class Panel1 extends  JFrame {
    Panel1() {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
    
    private void createAndShowGUI() {
        // create containers for various sections of GUI
        JPanel pnlWest = new JPanel();
        JPanel pnlCenter = new JPanel();
        JPanel pnlCenterNorth = new JPanel();
        JPanel pnlCenterCenter = new JPanel();
        JPanel pnlCenterSouth = new JPanel();

        // get content pane of current JFrame (this object)
        Container c = getContentPane();

        // set up layout managers for various containers
        pnlWest.setLayout(new GridLayout(5,1));
        pnlCenter.setLayout(new BorderLayout());
        pnlCenterNorth.setLayout(new BorderLayout());
        pnlCenterCenter.setLayout(new FlowLayout());
        pnlCenterSouth.setLayout(new FlowLayout());
        c.setLayout(new BorderLayout());

        // create components
        JRadioButton rdo1 = new JRadioButton("First");
        JRadioButton rdo2 = new JRadioButton("Second");
        JRadioButton rdo3 = new JRadioButton("Third", true);
        JRadioButton rdo4 = new JRadioButton("Fourth");
        JRadioButton rdo5 = new JRadioButton("Fifth");

        JLabel lbl1 = new JLabel("Hello, world!");
        JButton btn1 = new JButton("Click me");

        // (the list boxes need String arrays for contents)
        String[] lstArray1 = { "Craig", "Emilie", "Mike", "Mike", "Tim" };
        String[] lstArray2 = { "A350", "A372", "A373", "A374", "A375" };
        JComboBox<String> cbo1 = new JComboBox<String>(lstArray1);
        JComboBox<String> cbo2 = new JComboBox<String>(lstArray2);

        // make radio buttons exclusive by placing in button group
        ButtonGroup bgrp = new ButtonGroup();
        bgrp.add(rdo1);
        bgrp.add(rdo2);
        bgrp.add(rdo3);
        bgrp.add(rdo4);
        bgrp.add(rdo5);

        // add components to containers
        pnlWest.add(rdo1);
        pnlWest.add(rdo2);
        pnlWest.add(rdo3);
        pnlWest.add(rdo4);
        pnlWest.add(rdo5);

        pnlCenterNorth.add(lbl1, BorderLayout.CENTER);
        pnlCenterCenter.add(cbo1);
        pnlCenterCenter.add(cbo2);
        pnlCenterSouth.add(btn1);

        // add subpanels to pnlCenter
        pnlCenter.add(pnlCenterNorth, BorderLayout.NORTH);
        pnlCenter.add(pnlCenterCenter, BorderLayout.CENTER);
        pnlCenter.add(pnlCenterSouth, BorderLayout.SOUTH);

        // add main panels to main container (content pane)
        c.add(pnlWest, BorderLayout.WEST);
        c.add(pnlCenter, BorderLayout.CENTER);

        // just to be nice, add a WindowListener to close application
        //  - since I run old Java 1.2, I can't set the default close operation
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

        // set our size and make us visible
        pack();
        setResizable(false);
        setVisible(true);
    }

    public static void main(String[] args) {
        Panel1 app = new Panel1();
    }
}