/*

  * Created on 20/12/2005 by Eduardo Piva <eduardo@gwe.com.br>

  *

  */

 package org.trails.page;

 import org.apache.tapestry.annotations.InjectObject;

 import org.apache.tapestry.event.PageBeginRenderListener;

 import org.apache.tapestry.event.PageEvent;

 import org.apache.tapestry.html.BasePage;

 import org.trails.callback.CallbackStack;

 import org.trails.descriptor.DescriptorService;

 import org.trails.descriptor.IClassDescriptor;

 import java.util.ArrayList;

 import java.util.List;

 public abstract class HomePage extends BasePage implements PageBeginRenderListener

 {

         public abstract CallbackStack getCallbackStack();

         @InjectObject("service:trails.core.DescriptorService")

         public abstract DescriptorService getDescriptorService();

         public void pageBeginRender(PageEvent event)

         {

                 if (getCallbackStack() != null)

                 {

                         getCallbackStack().clear();

                 }

         }

         public List<IClassDescriptor> getAllDescriptors()

         {

                 List<IClassDescriptor> descriptors = getDescriptorService().getAllDescriptors();

                 List<IClassDescriptor> result = new ArrayList<IClassDescriptor>(descriptors.size());

                 for (IClassDescriptor descriptor : descriptors)

                 {

                         if (!descriptor.isHidden())

                         {

                                 result.add(descriptor);

                         }

                 }

                 return result;

         }

 }