ZK 5.0.10 ListBox Issues

package j3imkpfl$v7;

import java.util.LinkedList;
import java.util.List;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.event.ForwardEvent;
import org.zkoss.zul.Listbox;
import org.zkoss.zul.Listitem;
public class FWListbox extends Listbox
{
	public FWListbox( )
	{
		setMold("paging");
		setPagingPosition("bottom");
		setPageSize(20);
		setVflex(true);
		getPagingChild().setMold("os");
		setSizedByContent(true);
		setSpan(true);
		addEventListener(Events.ON_SELECT, new EventListener()
		{
			public void onEvent( Event event ) throws Exception
			{
				//        DataArrayModel<?> model = getDataArrayModel();
				List<String> model =new LinkedList<String>();
				if (model != null)
				{
					//          model.setSelectedListitems(getSelectedItems());
				}
			}
		});
		addEventListener(Events.ON_CHANGE, new EventListener()
		{
			public void onEvent( Event event ) throws Exception
			{
				Event ev = event;
				while (ev instanceof ForwardEvent)
					ev = ((ForwardEvent)ev).getOrigin();
				//        DataArrayModel<?> model = getDataArrayModel();
				List<String> model =new LinkedList<String>();
				if (model != null)
				{
					Component c = ev.getTarget();
					while (!(c instanceof Listitem))
						c = c.getParent();
					//          if (c instanceof Listitem)
					//            model.addDirtyListitem((Listitem)c);
				}
			}
		});
	}
}

package j3imkpfl$v7;
import org.zkoss.zk.ui.*;
import org.zkoss.zk.ui.event.*;
import org.zkoss.zk.ui.util.*;
import org.zkoss.zk.ui.ext.*;
import org.zkoss.zk.au.*;
import org.zkoss.zk.au.out.*;
import org.zkoss.zul.*;
public class TestComposer extends GenericForwardComposer{
	public void doAfterCompose(Component comp) throws Exception {
		super.doAfterCompose(comp);
	}
	public void onClick$btn(Event e) throws InterruptedException{
		Messagebox.show("Hi btn");
	}
}

<?page title="new page title" contentType="text/html;charset=UTF-8"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit"?>
<zk>
  <zscript><![CDATA[
    String[] data = new String[100];
    for (int i=0 ; i<100 ; i++){
    data[i] = Integer.toString(i); 
    }
    List results = Arrays.asList(data);
    ]]>
  </zscript>
  <borderlayout>
    <north title="Criteria" >
      <grid>
        <rows>
          <row>
            <label value="test" />
            <label value="test" />
          </row>
          <row>
            <label value="test" />
            <label value="test" />
          </row>
          <row>
            <label value="test" />
            <label value="test" />
          </row>
          <row>
            <label value="test" />
            <label value="test" />
          </row>
        </rows>
      </grid>
    </north>
    <center title="Results">
      <borderlayout>
        <center>
          <listbox model="@{results}" use="j3imkpfl$v7.FWListbox" multiple="true" checkmark="true" width="100%" height="100%">
            <listhead sizable="true">
              <listheader>test</listheader>
            </listhead>
            <listitem self="@{each=d}">
            <listcell label="@{d}" />
          </listitem>
          </listbox>
        </center>
      </borderlayout>
    </center>
    <south>
      <borderlayout>
        <west>
          <hbox>
            <label value="buton" />
          </hbox>
        </west>
      </borderlayout>
    </south>
  </borderlayout>
</zk>