package com.melloware.jukes.gui.view.component;
   
   import java.awt.event.ActionEvent;
   import java.awt.event.KeyAdapter;
   import java.awt.event.KeyEvent;
   import java.awt.event.KeyListener;
   import java.beans.PropertyChangeEvent;
   import java.beans.PropertyChangeListener;
   
  import javax.swing.AbstractListModel;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  import com.jgoodies.uif.action.ActionManager;
  import com.melloware.jukes.file.Disclist;
  import com.melloware.jukes.gui.tool.Actions;
  import com.melloware.jukes.gui.tool.Resources;
  import com.melloware.jukes.gui.view.DisclistPanel;
  
  /**
   * Mode used for displaying disclists in a JList.
   * <p>
   * Copyright (c) 1999-2007 Melloware, Inc. <http://www.melloware.com>
   * @author Emil A. Lefkof III <info@melloware.com>
   * @version 4.0 AZ Development 2009
   */
  public final class DisclistListModel extends AbstractListModel implements PropertyChangeListener {
  
     private static final Log LOG = LogFactory.getLog(DisclistListModel.class);
     private final Disclist disclist;
     private final DisclistListModel model;
     private final DisclistPanel panel;
  
     /**
      * KeyAdapter to deselect all on CTrl+D and delete items with DEL key.
      */
     private transient final KeyListener keyTypedListener = new KeyAdapter() {
        @Override
        public void keyPressed(final KeyEvent event) {
           if ((event.getKeyCode() == KeyEvent.VK_DELETE) && (model.getSize() > 0)) {
              LOG.debug("Delete pressed");
              panel.putClientProperty(Resources.EDITOR_COMPONENT, panel);
              final ActionEvent action = new ActionEvent(panel, 1, "");
              ActionManager.get(Actions.DISCLIST_REMOVE_DISC_ID).actionPerformed(action);
           } else if ((event.isControlDown()) && (event.getKeyCode() == KeyEvent.VK_D)) {
              LOG.debug("Deselect All");
              panel.clearSelection();
           } else if (event.getKeyCode() == KeyEvent.VK_DOWN) {
              disclist.getNext();
           } else if (event.getKeyCode() == KeyEvent.VK_UP) {
              disclist.getPrevious();
           } else {
              super.keyPressed(event);
           }
        }
     };
  
     /**
      * Constructs a <code>DisclistPanel</code> for the given module.
      * @param aDisclist provides the disclist class needed for display
      */
     public DisclistListModel(Disclist aDisclist, DisclistPanel aPanel) {
        super();
        LOG.debug("DisclistListModel created.");
        this.disclist = aDisclist;
        this.disclist.addPropertyChangeListener(this);
        this.panel = aPanel;
        this.model = this;
     }
  
     /*
      * (non-Javadoc)
      * @see javax.swing.ListModel#getElementAt(int)
      */
     public Object getElementAt(int aIndex) {
        Object returnValue;
  
        if (aIndex < this.disclist.getDiscList().size()) {
           returnValue = this.disclist.getDiscList().get(aIndex);
        } else {
           returnValue = null;
        }
        return returnValue;
     }
  
     /**
      * Gets the keyTypedListener.
      * <p>
      * @return Returns the keyTypedListener.
      */
     public KeyListener getKeyTypedListener() {
        return this.keyTypedListener;
     }
  
     /*
      * (non-Javadoc)
      * @see javax.swing.ListModel#getSize()
      */
    public int getSize() {
       return this.disclist.size();
    }
 
    /**
     * Whenever the master disclist changes update this view.
     */
    public void propertyChange(PropertyChangeEvent evt) {
       LOG.debug("Disclist changed");
       fireContentsChanged(this, 0, getSize());
    }
 
 }