package org.trails.io;

 import org.apache.tapestry.engine.IEngineService;

 import org.apache.tapestry.services.DataSqueezer;

 import org.apache.tapestry.util.io.SqueezeAdaptor;

 import org.trails.callback.TrailsPageCallback;

 import org.trails.descriptor.CollectionDescriptor;

 import org.trails.descriptor.IClassDescriptor;

 import org.trails.engine.TrailsPagesServiceParameter;

 import org.trails.engine.SqueezableTrailsPagesServiceParameter;

 import org.trails.page.PageType;

 public class TrailsPageCallbackAdaptor implements SqueezeAdaptor

 {

         public static final String PREFIX = "N";

         private IEngineService trailsPagesService;

         public String getPrefix()

         {

                 return PREFIX;

         }

         public Class getDataClass()

         {

                 return TrailsPageCallback.class;

         }

         public String squeeze(DataSqueezer squeezer, Object data)

         {

                 TrailsPagesServiceParameter tpsp = ((TrailsPageCallback) data).getTpsp();

                 SqueezableTrailsPagesServiceParameter serviceParameter = new SqueezableTrailsPagesServiceParameter(tpsp.getPageType().name(),

                                 squeezer.squeeze(tpsp.getClassDescriptor()), squeezer.squeeze(tpsp.getModel()),

                                 squeezer.squeeze(tpsp.getAssociationDescriptor()), squeezer.squeeze(tpsp.getParent()));

                 return PREFIX + squeezer.squeeze(serviceParameter);

         }

         public Object unsqueeze(DataSqueezer squeezer, String string)

         {

                 SqueezableTrailsPagesServiceParameter adp = (SqueezableTrailsPagesServiceParameter) squeezer.unsqueeze(string.substring(PREFIX.length()));

                 return new TrailsPageCallback(

                                 new TrailsPagesServiceParameter(PageType.valueOf(adp.getPageType()), (IClassDescriptor)

                                                 squeezer.unsqueeze(adp.getClassDescriptor()), squeezer.unsqueeze(adp.getModel()),

                                                 (CollectionDescriptor) squeezer.unsqueeze(adp.getAssoc()),

                                                 squeezer.unsqueeze(adp.getParent())), trailsPagesService);

         }

         public void setTrailsPagesService(IEngineService trailsPagesService)

         {

                 this.trailsPagesService = trailsPagesService;

         }

 }