/*
* Copyright 2002-2012 the original author or authors.
*
* 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.springframework.web.servlet.view.tiles3;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Locale;
import javax.servlet.ServletContext;
import org.apache.tiles.request.ApplicationResource;
import org.apache.tiles.request.locale.URLApplicationResource;
import org.apache.tiles.request.servlet.ServletApplicationContext;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.web.context.support.ServletContextResourcePatternResolver;
/**
* Spring-specific subclass of the Tiles ServletApplicationContext.
*
* @author Rossen Stoyanchev
* @since 3.2
*/
public class SpringWildcardServletTilesApplicationContext extends ServletApplicationContext {
/**
* The pattern resolver.
*/
protected ResourcePatternResolver resolver;
/**
* Constructor.
*
* @param servletContext The servlet context.
*/
public SpringWildcardServletTilesApplicationContext(ServletContext servletContext) {
super(servletContext);
resolver = new ServletContextResourcePatternResolver(servletContext);
}
@Override
public ApplicationResource getResource(String localePath) {
ApplicationResource retValue = null;
Collection<ApplicationResource> urlSet = getResources(localePath);
if (urlSet != null && !urlSet.isEmpty()) {
retValue = urlSet.iterator().next();
}
return retValue;
}
@Override
public ApplicationResource getResource(ApplicationResource base, Locale locale) {
ApplicationResource retValue = null;
Collection<ApplicationResource> urlSet = getResources(base.getLocalePath(locale));
if (urlSet != null && !urlSet.isEmpty()) {
retValue = urlSet.iterator().next();
}
return retValue;
}
@Override
public Collection<ApplicationResource> getResources(String path) {
Resource[] resources;
try {
resources = resolver.getResources(path);
} catch (IOException e) {
return Collections.<ApplicationResource> emptyList();
}
Collection<ApplicationResource> resourceList = new ArrayList<ApplicationResource>();
if (resources != null && resources.length > 0) {
for (int i = 0; i < resources.length; i++) {
URL url;
try {
url = resources[i].getURL();
resourceList.add(new URLApplicationResource(url.toExternalForm(), url));
} catch (IOException e) {
// shouldn't happen with the kind of resources we're using
throw new IllegalArgumentException("no URL for " + resources[i].toString(), e);
}
}
}
return resourceList;
}
}