001 // Copyright 2005 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. 014 015 package org.apache.tapestry.portlet; 016 017 import java.net.MalformedURLException; 018 import java.net.URL; 019 import java.util.List; 020 021 import javax.portlet.PortletContext; 022 023 import org.apache.commons.logging.Log; 024 import org.apache.commons.logging.LogFactory; 025 import org.apache.hivemind.util.Defense; 026 import org.apache.tapestry.describe.DescriptionReceiver; 027 import org.apache.tapestry.web.WebContext; 028 import org.apache.tapestry.web.WebUtils; 029 030 /** 031 * Adapts {@link javax.portlet.PortletContext}as {@link org.apache.tapestry.web.WebContext}. 032 * 033 * @author Howard M. Lewis Ship 034 * @since 4.0 035 */ 036 public class PortletWebContext implements WebContext 037 { 038 private static final Log LOG = LogFactory.getLog(PortletWebContext.class); 039 040 private final PortletContext _portletContext; 041 042 public PortletWebContext(PortletContext portletContext) 043 { 044 Defense.notNull(portletContext, "portletContext"); 045 046 _portletContext = portletContext; 047 } 048 049 public URL getResource(String path) 050 { 051 try 052 { 053 return _portletContext.getResource(path); 054 } 055 catch (MalformedURLException ex) 056 { 057 LOG.error(PortletMessages.errorGettingResource(path, ex), ex); 058 059 return null; 060 } 061 } 062 063 public List getAttributeNames() 064 { 065 return WebUtils.toSortedList(_portletContext.getAttributeNames()); 066 } 067 068 public Object getAttribute(String name) 069 { 070 return _portletContext.getAttribute(name); 071 } 072 073 public void setAttribute(String name, Object attribute) 074 { 075 if (attribute == null) 076 _portletContext.removeAttribute(name); 077 else 078 _portletContext.setAttribute(name, attribute); 079 } 080 081 public List getInitParameterNames() 082 { 083 return WebUtils.toSortedList(_portletContext.getInitParameterNames()); 084 } 085 086 public String getInitParameterValue(String name) 087 { 088 return _portletContext.getInitParameter(name); 089 } 090 091 public String getMimeType(String resourcePath) 092 { 093 return _portletContext.getMimeType(resourcePath); 094 } 095 096 public void describeTo(DescriptionReceiver receiver) 097 { 098 receiver.describeAlternate(_portletContext); 099 } 100 }