InternalFormatView.java

package apes.views;

import java.util.Observable;
import java.util.Observer;

import javax.swing.JPanel;

import apes.controllers.ChannelController;
import apes.lib.PlayerHandler;
import apes.models.InternalFormat;
import apes.models.Player;


/**
 * Contains one ChannelView per channel in the internal format.
 * 
 * @author Johan Andersson (johandy@student.chalmers.se)
 */
public class InternalFormatView extends JPanel implements Observer
{
  /**
   * Internal format.
   */
  private InternalFormat internalFormat;

  /**
   * The channel view.
   */
  private ChannelView channelView;

  /**
   * The status panel.
   */
  private InternalFormatStatusPanel statusPanel;

  /**
   * The channel controller.
   */
  private ChannelController channelController;

  /**
   * Zoom in and out by this much.
   */
  public final static int ZOOM = 2;

  /**
   * Max possible zoom.
   */
  public final static int MAX_ZOOM = 10;

  /**
   * Places one ChannelView for each channel on this panel.
   * 
   * @param internalFormat an <code>InternalFormat</code> value.
   */
  public InternalFormatView(InternalFormat internalFormat)
  {
    this.internalFormat = internalFormat;

    Player player = PlayerHandler.getInstance().setInternalFormat(internalFormat);

    // Observe these.
    internalFormat.addObserver(this);
    player.addObserver(this);

    channelController = new ChannelController(player);

    channelView = new ChannelView(internalFormat, channelController, player);
    statusPanel = new InternalFormatStatusPanel(internalFormat, channelController, player);
    add(statusPanel);
    add(channelView);

    // The controller must know some views.
    channelController.setStatusPanel(statusPanel);
    channelController.setChannelView(channelView);

    setInternalFormat(internalFormat);
  }

  /**
   * Returns the internal format connected to this view.
   * 
   * @return The internal format.
   */
  public InternalFormat getInternalFormat()
  {
    return internalFormat;
  }

  /**
   * Adds some channel views to this pannel.
   * 
   * @param internalFormat The internal format.
   */
  private void setInternalFormat(InternalFormat internalFormat)
  {
    for(int i = 0; i < internalFormat.getNumChannels(); i++)
    {
      channelView.addChannel(i);
    }
  }

  public void update(Observable o, Object arg)
  {
    if(o instanceof InternalFormat)
    {
      channelView.updateInternalFormat();
    }

    if(o instanceof Player)
    {
      channelView.updatePlayer();
      statusPanel.updatePlayer();
    }
  }

  /**
   * Updates all.
   */
  public void updateAll()
  {
    channelView.updateInternalFormat();
    channelView.updatePlayer();
    statusPanel.updatePlayer();
  }

  // DELEGATORS
  public int getZoom()
  {
    return channelView.getZoom();
  }

  public void setZoom(int samples)
  {
    channelView.setZoom(samples);
  }

  public void setCenter(int sample)
  {
    channelView.setCenter(sample);
  }

  public int getCenter()
  {
    return channelView.getCenter();
  }
}