| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.resource; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.Locale; |
| |
| import javax.servlet.ServletContext; |
| |
| import org.apache.commons.lang.builder.HashCodeBuilder; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.tapestry.IResourceLocation; |
| import org.apache.tapestry.Tapestry; |
| import org.apache.tapestry.util.LocalizedContextResourceFinder; |
| import org.apache.tapestry.util.LocalizedResource; |
| |
| /** |
| * Implementation of {@link org.apache.tapestry.IResourceLocation} |
| * for resources found within the web application context. |
| * |
| * |
| * @author Howard Lewis Ship |
| * @version $Id$ |
| * @since 3.0 |
| * |
| **/ |
| |
| public class ContextResourceLocation extends AbstractResourceLocation |
| { |
| private static final Log LOG = LogFactory.getLog(ContextResourceLocation.class); |
| |
| private ServletContext _context; |
| |
| public ContextResourceLocation(ServletContext context, String path) |
| { |
| this(context, path, null); |
| } |
| |
| public ContextResourceLocation(ServletContext context, String path, Locale locale) |
| { |
| super(path, locale); |
| |
| _context = context; |
| } |
| |
| /** |
| * Locates the resource using {@link LocalizedContextResourceFinder} |
| * and {@link ServletContext#getResource(java.lang.String)}. |
| * |
| **/ |
| |
| public IResourceLocation getLocalization(Locale locale) |
| { |
| LocalizedContextResourceFinder finder = new LocalizedContextResourceFinder(_context); |
| |
| String path = getPath(); |
| LocalizedResource localizedResource = finder.resolve(path, locale); |
| |
| if (localizedResource == null) |
| return null; |
| |
| String localizedPath = localizedResource.getResourcePath(); |
| Locale pathLocale = localizedResource.getResourceLocale(); |
| |
| if (localizedPath == null) |
| return null; |
| |
| if (path.equals(localizedPath)) |
| return this; |
| |
| return new ContextResourceLocation(_context, localizedPath, pathLocale); |
| } |
| |
| public URL getResourceURL() |
| { |
| try |
| { |
| return _context.getResource(getPath()); |
| } |
| catch (MalformedURLException ex) |
| { |
| LOG.warn( |
| Tapestry.format( |
| "ContextResourceLocation.unable-to-reference-context-path", |
| getPath()), |
| ex); |
| |
| return null; |
| } |
| } |
| |
| public String toString() |
| { |
| return "context:" + getPath(); |
| } |
| |
| public int hashCode() |
| { |
| HashCodeBuilder builder = new HashCodeBuilder(3265, 143); |
| |
| builder.append(getPath()); |
| |
| return builder.toHashCode(); |
| } |
| |
| protected IResourceLocation buildNewResourceLocation(String path) |
| { |
| return new ContextResourceLocation(_context, path); |
| } |
| |
| } |