001// Copyright 2010, 2011 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.internal.services; 016 017import java.io.IOException; 018 019import org.apache.tapestry5.EventContext; 020import org.apache.tapestry5.internal.EmptyEventContext; 021import org.apache.tapestry5.internal.InternalConstants; 022import org.apache.tapestry5.ioc.annotations.Inject; 023import org.apache.tapestry5.ioc.services.TypeCoercer; 024import org.apache.tapestry5.services.ComponentClassResolver; 025import org.apache.tapestry5.services.ComponentEventResultProcessor; 026import org.apache.tapestry5.services.PageRenderRequestHandler; 027import org.apache.tapestry5.services.PageRenderRequestParameters; 028import org.apache.tapestry5.services.Request; 029import org.apache.tapestry5.services.StreamPageContent; 030 031/** 032 * Used to trigger the rendering of a particular page without causing a redirect to that page. 033 * The content of the page is just streamed to the client. 034 * 035 * @since 5.2.0 036 */ 037public class StreamPageContentResultProcessor implements ComponentEventResultProcessor<StreamPageContent> 038{ 039 private final PageRenderRequestHandler handler; 040 041 private final ComponentClassResolver resolver; 042 043 private final TypeCoercer typeCoercer; 044 045 public StreamPageContentResultProcessor(PageRenderRequestHandler handler, ComponentClassResolver resolver, TypeCoercer typeCoercer) 046 { 047 this.handler = handler; 048 this.resolver = resolver; 049 this.typeCoercer = typeCoercer; 050 } 051 052 public void processResultValue(final StreamPageContent value) throws IOException 053 { 054 055 final Class<?> pageClass = value.getPageClass(); 056 final Object[] activationContext = value.getPageActivationContext(); 057 058 final String pageName = this.resolver.resolvePageClassNameToPageName(pageClass.getName()); 059 060 final EventContext context = activationContext == null ? new EmptyEventContext() : new ArrayEventContext( 061 this.typeCoercer, activationContext); 062 063 this.handler.handle(new PageRenderRequestParameters(pageName, context, false)); 064 } 065}