package jp.gr.java_conf.skrb.logging;

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.logging.Logger;
import java.util.logging.Level;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.border.TitledBorder;

public class FavoriteNumberWithLog1 {

    private JTextField field;

    private int favorite;

    protected static Logger logger = Logger.getLogger("jp.ne.airnet.sakuraba.logging");

    public FavoriteNumberWithLog1() {}

    public void init() {
        JFrame frame = new JFrame("Favorite Number with Log");
        frame.setBounds(100, 100, 300, 80);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        logger.config("JFrame@" + Integer.toHexString(frame.hashCode()) + " is created.");

        Container pane = frame.getContentPane();
        pane.setLayout(new BoxLayout(pane, BoxLayout.X_AXIS));

        field = new JTextField(10);
        field.setBorder(new TitledBorder("Your Favorite Number"));
        pane.add(field);
        logger.config("JTextField@" + Integer.toHexString(field.hashCode()) + " is created.");

        pane.add(Box.createHorizontalStrut(20));

        JButton button = new JButton("Œˆ’è");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event){
                updateNumber();
            }
        });
        pane.add(button);
        logger.config("JButton@" + Integer.toHexString(button.hashCode()) + " is created.");
     
        frame.setVisible(true);
        logger.config("JFrame@" + Integer.toHexString(frame.hashCode()) + " shows.");
    }
        
    private void updateNumber() {
        logger.entering("FavoriteNubmerWithLog1", "updateNubmer");
        try {
            favorite = Integer.parseInt(field.getText());
            logger.info("Your Favorite Number is " + favorite);
        } catch (NumberFormatException ex) {
            logger.log(Level.WARNING,
                       "Non-number:[" + field.getText() + "] was inputted.", ex);
        } finally {
            field.setText("");
            logger.exiting("FavoriteNubmerWithLog1", "updateNubmer");
        }
    }

    public static void main(String[] args) {
        new FavoriteNumberWithLog1().init();
    }
}