/**
 * 
 */
package kuki.swingdice;

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;

/**
 * @author mk
 * 
 */
public class MainFrame extends JFrame {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1471854542495370461L;

	private JComboBox pocetKociek = new JComboBox(new String[] { "1", "2", "3",
			"4", "5" });

	private JLabel[] kocky;

	private JButton generujButton = new JButton("Generuj");

	/**
	 * @throws HeadlessException
	 */
	public MainFrame() throws HeadlessException {
		super();
		this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		this.setLayout(new FlowLayout());
		this.add(new JLabel("Počet kociek:"));
		this.add(pocetKociek);
		this.add(generujButton);

		pocetKociek.getModel().addListDataListener(new ListDataListener() {
			public void contentsChanged(ListDataEvent e) {
				if (kocky != null && kocky.length > 0) {
					for (int i = 0; i < kocky.length; i++) {
						MainFrame.this.remove(kocky[i]);
						System.out.println("Mazem " + i);
					}
				}
				int pocet = Integer.parseInt((String) pocetKociek
						.getSelectedItem());
				kocky = new JLabel[pocet];
				for (int i = 0; i < kocky.length; i++) {
					System.out.println("Pridavam " + i);
					kocky[i] = new JLabel("X");
					kocky[i].setFont(new Font("Helvetica", Font.BOLD, 20));
					MainFrame.this.add(kocky[i]);
					kocky[i].setText("X");
					//kocky[i].repaint();
				}
				MainFrame.this.pack();
			}

			public void intervalAdded(ListDataEvent e) {
			}

			public void intervalRemoved(ListDataEvent e) {
			}

		});

		generujButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				for (int i = 0; i < kocky.length; i++) {
					int cislo = (int) (Math.random() * 6) + 1;
					kocky[i].setText("" + cislo);
				}
			}
		});

		pocetKociek.setSelectedIndex(0);
		this.setSize(300, 70);
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		MainFrame mainFrame = new MainFrame();
		mainFrame.setVisible(true);
	}
}