001 package org.apache.myfaces.tobago.util; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one or more 005 * contributor license agreements. See the NOTICE file distributed with 006 * this work for additional information regarding copyright ownership. 007 * The ASF licenses this file to You under the Apache License, Version 2.0 008 * (the "License"); you may not use this file except in compliance with 009 * the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, software 014 * distributed under the License is distributed on an "AS IS" BASIS, 015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 016 * See the License for the specific language governing permissions and 017 * limitations under the License. 018 */ 019 020 import javax.faces.context.ExternalContext; 021 import javax.faces.context.FacesContext; 022 import javax.servlet.http.HttpServletResponse; 023 024 /* 025 * Date: Oct 21, 2006 026 * Time: 10:39:25 AM 027 */ 028 public class ResponseUtils { 029 030 public static void ensureNoCacheHeader(ExternalContext externalContext) { 031 // TODO PortletRequest 032 if (externalContext.getResponse() instanceof HttpServletResponse) { 033 HttpServletResponse response = (HttpServletResponse) externalContext.getResponse(); 034 response.setHeader("Cache-Control", "no-cache,no-store,max-age=0,must-revalidate"); 035 response.setHeader("Pragma", "no-cache"); 036 response.setDateHeader("Expires", 0); 037 response.setDateHeader("max-age", 0); 038 } 039 } 040 041 public static void ensureContentTypeHeader(FacesContext facesContext, String contentType) { 042 // TODO PortletRequest 043 if (facesContext.getExternalContext().getResponse() instanceof HttpServletResponse) { 044 HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse(); 045 response.setContentType(contentType); 046 } 047 } 048 }