package applets;

import java.applet.Applet;
import java.applet.AudioClip;

import java.awt.BorderLayout;
import java.awt.Color;

import java.net.MalformedURLException;
import java.net.URL;

import javax.swing.JApplet;
import javax.swing.JLabel;

import multimedia.ImagePanel;

public class MultimediaApplet extends JApplet
{
  public void init()
  {
    // First, create the image part of the GUI
    URL[] imageURLs = gatherImageURLs();
    getContentPane().add(new ImagePanel(imageURLs),
                         BorderLayout.CENTER);
    
    // Next, a label indicating the state of the audio part
    m_soundLabel = new JLabel("Loading audio clip...");
    m_soundLabel.setOpaque(true);
    m_soundLabel.setBackground(Color.WHITE);
    getContentPane().add(m_soundLabel, BorderLayout.SOUTH);
    
    // Load the audio clip
    loadAudioClip("audio/yahoo1.au");
    
    if (m_sound == null)
    {
      m_soundLabel.setText("No audio clip found...");
      m_soundLabel.setForeground(Color.RED);
    }
    else
    {
      m_soundLabel.setText("Playing audio clip...");
    }
  }
  
  public void start()
  {
    if (m_sound == null)
    {
      System.err.println("No audio clip to play!");
    }
    else
    {
      m_sound.play();
    }
  }
  
  private URL[] gatherImageURLs()
  {
    URL[] imageURLs = new URL[2];
    
    // Get the URL of applet
    URL baseURL = getCodeBase();
    System.out.println("CodeBase: " + baseURL);
    
    // Now get the URL for the first image file, below that directory
    URL imageURL = null;
    try
    {
      imageURL = new URL(baseURL, "images/bleye.gif");
      
      // Set in the first image URL.
      imageURLs[0] = imageURL;
      
      // The second image is on the web
      imageURLs[1] = new URL(
          "http://www.rivier.edu/faculty/bhiggs/web/cs585aweb/images/monalisa.jpg");
    }
    catch (MalformedURLException mue)
    {
      // Something wrong with our URL handling
      mue.printStackTrace();
    }
    
    return imageURLs;
  }
  
  private void loadAudioClip(String path)
  {
    AudioClip clip = null;
    URL baseURL = getCodeBase();
    System.out.println("Audio clip baseURL: " + baseURL);
    URL audioClipURL = null;
    try
    {
      audioClipURL = new URL(baseURL, path);
      System.out.println("Audio clip URL: " + audioClipURL);
      clip = Applet.newAudioClip(audioClipURL);
    }
    catch (MalformedURLException mue)
    {
      mue.printStackTrace();
    }
    m_sound = clip;
    System.out.println("Audio clip loaded.");
  }
  
  ///////// Data //////////////
  private JLabel m_soundLabel;
  private AudioClip m_sound = null;
}

package multimedia;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;

import java.net.URL;

import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

public class ImagePanel extends JPanel
{
  public ImagePanel(final URL[] imageURLs)
  {
    setBackground(Color.WHITE);
    setLayout(new BorderLayout());
    
    // Indicate that we're loading images,
    // which may take a long time.
    JLabel statusLabel = new JLabel("Loading Images...",
        JLabel.CENTER);
    statusLabel.setForeground(Color.BLACK);
    add(statusLabel, BorderLayout.CENTER);
    
    // Load the images in a separate thread to avoid
    // hanging up this thread waiting for load completion.
    Thread loader = new Thread()
    {
      public void run()
      {
        loadImages(imageURLs);
        // When done, cause a repaint from the 
        // event dispatcher thread
        SwingUtilities.invokeLater( new Runnable()
        {
          public void run()
          {
            // Remove the "Loading images..." label
            ImagePanel.this.removeAll();
            // and cause the images to display
            ImagePanel.this.repaint();
          }
        }
        );
      }
    };
    // Start the loader thread
    loader.start();
  }
  
  public void paintComponent(Graphics g)
  {
    super.paintComponent(g);
    
    if (m_imagesLoaded)
    {
      g.setColor(Color.BLACK);
      int x = 5;
      int y = 5;
      for (int i = 0; i < m_image.length; i++)
      {
        if (m_image[i] != null)
        {
          m_image[i].paintIcon(this, g, x, y);
          x += m_image[i].getImage().getWidth(this) + 5;
        }
        else
        {
          g.setColor(Color.RED);
          g.drawString("No image found", x, y);
        }
      }
    }
  }
  
  private void loadImages(URL[] imageURLs)
  {
    m_image = new ImageIcon[imageURLs.length];
    for (int i = 0; i < imageURLs.length; i++)
    {
      m_image[i] = new ImageIcon(imageURLs[i]);
    }
    m_imagesLoaded = true;
  }
  
  //// Private data /////
  private ImageIcon[] m_image;
  private boolean m_imagesLoaded;
}