ISO 9797 algorithm 3

I posted a question to the Wicket users group a few days ago on how to best deal with frames, in particular how to pass arguments between a tree view in one frame and a list view in another. I didn't get any takers.

I finally determined that there was no good way other than to use plain-old javascript to push values from the tree up to the parent frame, where they are dispersed to the other frames.

I wanted to use LinkTree, but really didn't need most of the features other than the look and feel. I just needed to be able to insert an onclick link that would pass a value to my parent frame.

After a lot of digging I came up with a solution that worked, but seems verbose for the job I'm attempting. My question for the reader is this: Can you propose a more concise solution?

public class CategoryTree extends LinkTree
{
  @Override
  protected Component newNodeComponent(String id, IModel model)
  {
      return new LinkIconPanel(id, model, CategoryTree.this)
      {
          private static final long serialVersionUID = 1L;

          protected void onNodeLinkClicked(TreeNode node, BaseTree tree, AjaxRequestTarget target)
          {
              super.onNodeLinkClicked(node, tree, target);
              CategoryTree.this.onNodeLinkClicked(node, tree, target);
          }
       
          protected Component newContentComponent(String componentId, BaseTree tree, IModel model)
          {
              Label l = new Label(componentId, model)
              {
                  private static final long serialVersionUID = 1L;
               
                  @Override
                  protected void onComponentTag(ComponentTag tag)
                  {
                      super.onComponentTag(tag);
                      tag.put("onclick", "parent.notifyViews(this.getAttribute('catalogid'))");
                   
                  }
              };
       
              DefaultMutableTreeNode n = (DefaultMutableTreeNode)model.getObject();
           
              if (n.getUserObject() instanceof EcCategoryTreeNode)
              {
                  EcCategoryTreeNode ec = (EcCategoryTreeNode)n.getUserObject();
                  l.add(new SimpleAttributeModifier("catalogid", "" + ec.getId()));
              }
           
              return l;
          };
      };
  }

  public CategoryTree(String s, TreeModel tm)
  {
      super(s,tm);
      this.setLinkType(LinkType.REGULAR);
  }

}