001// Copyright 2006, 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.ComponentEventResultProcessor; 019 020import java.io.IOException; 021 022/** 023 * Used when a component event handler returns a string value. The value is interpreted as the logical name of a page. A 024 * link to the page will be sent as a redirect. 025 */ 026public class PageNameComponentEventResultProcessor implements ComponentEventResultProcessor<String> 027{ 028 private final RequestPageCache requestPageCache; 029 030 private final ActionRenderResponseGenerator generator; 031 032 public PageNameComponentEventResultProcessor(RequestPageCache requestPageCache, 033 ActionRenderResponseGenerator generator) 034 { 035 this.requestPageCache = requestPageCache; 036 this.generator = generator; 037 } 038 039 public void processResultValue(String value) throws IOException 040 { 041 Page page = requestPageCache.get(value); 042 043 generator.generateResponse(page); 044 } 045}