package com.melloware.jukes.gui.view.node;
   
   import java.text.MessageFormat;
   import java.util.Iterator;
   
   import javax.swing.Icon;
   
   import org.apache.commons.lang.StringUtils;
   import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  import com.jgoodies.uif.util.ResourceUtils;
  import com.melloware.jukes.db.HibernateDao;
  import com.melloware.jukes.db.orm.Artist;
  import com.melloware.jukes.db.orm.Disc;
  import com.melloware.jukes.gui.tool.Resources;
  
  /**
   * This class represents ARTISTS in the navigation tree.
   * <p>
   * Copyright (c) 1999-2007 Melloware, Inc. <http://www.melloware.com>
   * @author Emil A. Lefkof III <info@melloware.com>
   * @version 4.0
   *
   * @see com.melloware.jukes.db.orm.Artist
   */
  public final class ArtistNode
      extends AbstractTreeNode {
  
      private static final Log LOG = LogFactory.getLog(ArtistNode.class);
  
      /**
       * Constructs a <code>ArtistNode</code> for the given parent and artist.
       * <p>
       * @param aParent this node's parent
       * @param aModel the associated model, an instance of Artist
       */
      public ArtistNode(NavigationNode aParent, Artist aModel) {
          super(aParent, aModel);
          this.settings = ((AbstractTreeNode)aParent).settings;
      }
  
      /**
       * Returns this node's associated Artist instance.
       * <p>
       * @return this node's associated Artist instance.
       * @see NavigationNode#getModel()
       */
      public Artist getArtist() {
          return (Artist)getModel();
      }
  
      /**
       * Returns this node's icon, ignores the selection.
       * The icons is requested from a global resource repository.
       * <p>
       * @return this node's icon.
       */
      public Icon getIcon(final boolean sel) {
          Icon icon = null;
          if (StringUtils.equalsIgnoreCase(getArtist().getName(), "grateful dead")) {
              icon = Resources.DISC_GD_ICON;
          } else if (StringUtils.equalsIgnoreCase(getArtist().getName(), "pink floyd")) {
              icon = Resources.DISC_PF_ICON;
          } else if (StringUtils.equalsIgnoreCase(getArtist().getName(), "who")) {
              icon = Resources.DISC_WHO_ICON;
          } else if (StringUtils.equalsIgnoreCase(getArtist().getName(), "beatles")) {
              icon = Resources.DISC_BEATLES_ICON;
          } else if (StringUtils.equalsIgnoreCase(getArtist().getName(), "rolling stones")) {
              icon = Resources.DISC_STONES_ICON;
          } else {
              icon = Resources.ARTIST_TREE_ICON;
          }
          return icon;
      }
  
      /**
       * Returns this node's name, the identifier of the associated artist.
       * <p>
       * @return this node's name
       */
      public String getName() {
          return getArtist().getName();
      }
  
      /* (non-Javadoc)
       * @see com.melloware.jukes.gui.tool.node.AbstractTreeNode#loadChildren()
       */
      public void loadChildren() {
          if (!childrenLoaded) {
              loadingChildren = true;
              LOG.debug("Loading children");
  
              Iterator iterator = null;
              final String filter = this.settings.getFilter();
  
              // if a filter was applied the use the filter HQL
              if (StringUtils.isNotBlank(filter)) {
                  final String resource = ResourceUtils.getString("hql.filter.disc");
                 final String hql = MessageFormat.format(resource, new Object[] { getArtist().getId(), filter });
                 LOG.debug(hql);
                 iterator = HibernateDao.findByQuery(hql).iterator();
             } else {
                 // else just get all discs for this artist
                 iterator = getArtist().getDiscs().iterator();
             }
 
             // now loop through and add the children
             while (iterator.hasNext()) {
                 final Disc disc = (Disc)iterator.next();
                 if (LOG.isDebugEnabled()) {
                     LOG.debug("Loading disc " + disc.getName());
                 }
                 this.add(new DiscNode(this, disc));
             }
             loadingChildren = false;
             childrenLoaded = true;
         }
 
     }
 
 }