/**
 * File: GUI.java
 * Author: Brian Borowski
 * Date created: August 1, 2011
 * Date last modified: April 13, 2012
 */
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.JFrame;

public class GUI extends JFrame {
    private static final int DEFAULT_WIDTH = 640,
                             DEFAULT_HEIGHT = 480;
    private static final long serialVersionUID = 1L;

    private final ApplicationStarter applicationStarter;
    private final GamePanel gamePanel;

    public GUI(final ApplicationStarter appStarter) {
        super(Application.NAME);
        this.applicationStarter = appStarter;

        gamePanel = new GamePanel(DEFAULT_WIDTH, DEFAULT_HEIGHT);
        final Container contentPane = getContentPane();
        contentPane.add(gamePanel, BorderLayout.CENTER);

        setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
        addWindowListener(new ClosingWindowListener(gamePanel));
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
        setResizable(false);
        validate();

        setLocationRelativeTo(null);
        setVisible(true);
        setFocusable(true);
        requestFocus();
        gamePanel.requestFocusInWindow(); // Must request focus to receive key events.
        gamePanel.startGame(true);
    }

    private void doApplicationClosing() {
        if (applicationStarter != null) {
            gamePanel.stopGame();
            AudioPlayer.stop();
            applicationStarter.close();
        } else {
            System.exit(0);
        }
    }

    class ClosingWindowListener implements WindowListener {
        private final GamePanel gamePanel;

        public ClosingWindowListener(final GamePanel gamePanel) {
            this.gamePanel = gamePanel;
        }

        public void windowClosing(final WindowEvent e) {
            gamePanel.stopGame();
            doApplicationClosing();
        }

        public void windowActivated(final WindowEvent e) {
            gamePanel.resumeGame();
        }

        public void windowDeactivated(final WindowEvent e) {
            gamePanel.pauseGame();
        }

        public void windowDeiconified(final WindowEvent e) {
            gamePanel.resumeGame();
        }

        public void windowIconified(final WindowEvent e) {
            gamePanel.pauseGame();
        }

        public void windowClosed(final WindowEvent e) { }

        public void windowOpened(final WindowEvent e) { }
    }
}