package org.trails.component.search;

 import org.apache.tapestry.IRequestCycle;

 import org.apache.tapestry.annotations.InjectObject;

 import org.apache.tapestry.annotations.Parameter;

 import org.apache.tapestry.components.Block;

 import org.apache.tapestry.event.PageBeginRenderListener;

 import org.apache.tapestry.event.PageEvent;

 import org.apache.hivemind.util.PropertyUtils;

 import org.hibernate.criterion.DetachedCriteria;

 import org.trails.component.ClassDescriptorComponent;

 import org.trails.descriptor.BlockFinder;

 import org.trails.descriptor.IClassDescriptor;

 import org.trails.descriptor.IPropertyDescriptor;

 import org.trails.page.HibernateListPage;

 import org.trails.page.PageResolver;

 import org.trails.page.TrailsPage.PageType;

 public abstract class SearchForm extends ClassDescriptorComponent implements PageBeginRenderListener

 {

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

         public abstract PageResolver getPageResolver();

         @InjectObject("spring:searchBlockFinder")

         public abstract BlockFinder getBlockFinder();

         @Parameter(name = "classDescriptor", required = false, defaultValue = "ognl:page.classDescriptor")

         public abstract IClassDescriptor getClassDescriptor();

         public abstract void setClassDescriptor(IClassDescriptor ClassDescriptor);

         public abstract IPropertyDescriptor getPropertyDescriptor();

         public abstract void setPropertyDescriptor(IPropertyDescriptor PropertyDescriptor);

         public abstract DetachedCriteria getCriteria();

         public abstract void setCriteria(DetachedCriteria Criteria);

         public void search(IRequestCycle cycle)

         {

                 HibernateListPage listPage = (HibernateListPage) getPageResolver().resolvePage(cycle,

                         getClassDescriptor().getType(),

                         PageType.List);

                 listPage.setCriteria(getCriteria());

                 cycle.activate(listPage);

         }

         public Block getBlock()

         {

                 Block searchBlock = getBlockFinder().findBlock(getPage().getRequestCycle(), getPropertyDescriptor());

                 PropertyUtils.write(searchBlock.getPage(), "criteria", getCriteria());

                 return searchBlock;

         }

         public void pageBeginRender(PageEvent event)

         {

                 setCriteria(DetachedCriteria.forClass(getClassDescriptor().getType()));

         }

 }