/*
    InClassGUI2.java
    CIS 160
    2014-10-28
    David Klick

    Demonstration of GUI with radio buttons, check boxes, 
    a combo box (drop down list), and a button group.
*/

import java.awt.Color;
import java.awt.Container;
import java.awt.GridLayout;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.SwingUtilities;

public class InClassGUI2 extends JFrame {
    // Create an object out of ourself when program starts.
    public static void main(String[] args) {
        new InClassGUI2();
    }
    
    // Create thread to setup GUI when the EDT has time.
    public InClassGUI2() {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }

    // This method sets up the GUI and displays it.
    public void createAndShowGUI() {
        // Create containers.
        Container c = getContentPane();
        JPanel pnl1 = new JPanel();
        JPanel pnl2 = new JPanel();
        JPanel pnl3 = new JPanel();
        JPanel pnl4 = new JPanel();
        
        // Set layout managers.
        c.setLayout(new GridLayout(4, 1));
        pnl1.setLayout(new GridLayout(1,2));
        pnl2.setLayout(new GridLayout(1,2));
        pnl3.setLayout(new GridLayout(1,2));
        pnl4.setLayout(new GridLayout(1,2));
        
        // Add borders to three panels.
        pnl1.setBorder(BorderFactory.createLineBorder(Color.BLACK));
        pnl2.setBorder(BorderFactory.createLineBorder(Color.BLACK));
        pnl3.setBorder(BorderFactory.createLineBorder(Color.BLACK));
        
        // Create widgets.
        JCheckBox chk1 = new JCheckBox("Hot dogs", true);
        JCheckBox chk2 = new JCheckBox("Cheese Fries");
        JRadioButton rdo1 = new JRadioButton("Plain", true);
        JRadioButton rdo2 = new JRadioButton("w/Salsa");
        JRadioButton rdo3 = new JRadioButton("Dropped", true);
        JRadioButton rdo4 = new JRadioButton("Not dropped");
        String[] seasonings = {"Mild", "Hot", "Insane", "Lethal"};
        JComboBox<String> cbo = new JComboBox<String>(seasonings);
        
        // A button group lets radio buttons act properly.
        // Note: The first two radio buttons (rdo1 and rdo2) are not
        // in a button group so only rdo3 and rdo4 will act as 
        // proper radio buttons.
        ButtonGroup grp = new ButtonGroup();
        grp.add(rdo3);
        grp.add(rdo4);
        
        
        // Add widgets to containers.
        pnl1.add(chk1);
        pnl1.add(chk2);
        pnl2.add(rdo1);
        pnl2.add(rdo2);
        pnl3.add(rdo3);
        pnl3.add(rdo4);
        pnl4.add(cbo);
        
        // Add subcontainers to main container.
        c.add(pnl1);
        c.add(pnl2);
        c.add(pnl3);
        c.add(pnl4);
        
        // Set close operation and display GUI.
        setTitle("Here's the title");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        pack();
        setVisible(true);
    }
    
}