001// Copyright 2007, 2008 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 org.apache.tapestry5.internal.structure.Page; 018import org.apache.tapestry5.services.ComponentClassResolver; 019import org.apache.tapestry5.services.ComponentEventResultProcessor; 020 021import java.io.IOException; 022 023/** 024 * Used when a component event handler returns a class value. The value is interpreted as the page class. A link to the 025 * page will be sent. 026 */ 027public class ClassResultProcessor implements ComponentEventResultProcessor<Class> 028{ 029 private final ComponentClassResolver resolver; 030 031 private final RequestPageCache requestPageCache; 032 033 private final ActionRenderResponseGenerator generator; 034 035 public ClassResultProcessor(ComponentClassResolver resolver, RequestPageCache requestPageCache, 036 ActionRenderResponseGenerator generator) 037 { 038 this.resolver = resolver; 039 this.requestPageCache = requestPageCache; 040 this.generator = generator; 041 } 042 043 public void processResultValue(Class value) throws IOException 044 { 045 String className = value.getName(); 046 String pageName = resolver.resolvePageClassNameToPageName(className); 047 048 Page page = requestPageCache.get(pageName); 049 050 generator.generateResponse(page); 051 } 052 053}