/*
* 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 com.asual.summer.core.spring;
import java.net.URL;
import java.util.List;
import javax.inject.Named;
import javax.servlet.http.HttpServletRequest;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator;
import com.asual.summer.core.ViewNotFoundException;
import com.asual.summer.core.util.BeanUtils;
import com.asual.summer.core.util.RequestUtils;
import com.asual.summer.core.util.ResourceUtils;
/**
*
* @author Rostislav Hristov
*
*/
@Named("viewNameTranslator")
public class ViewNameTranslator extends DefaultRequestToViewNameTranslator {
private final static String INDEX = "/index";
private String findViewName(String prefix, String path, String suffix, boolean greedy) {
URL uri = ResourceUtils.getClasspathResource(prefix.replaceAll("^/", "") + path + suffix);
if (uri != null) {
return path;
}
uri = ResourceUtils.getClasspathResource(prefix.replaceAll("^/", "") + path + INDEX + suffix);
if (uri != null) {
return path + INDEX;
}
if (greedy && path.lastIndexOf("/") != -1) {
return findViewName(prefix, path.substring(0, path.lastIndexOf("/")), suffix, greedy);
}
return null;
}
public String getViewName(HttpServletRequest request) {
String uri = StringUtils.stripFilenameExtension(
RequestUtils.contextRelative(request.getRequestURI().replaceAll("/+", "/"), false)).replaceFirst("/$", "");
ExtendedInternalResourceViewResolver pagesResolver = null;
ViewResolverConfiguration viewResolverConfiguraton = BeanUtils.getBeanOfType(ViewResolverConfiguration.class);
List<ViewResolver> viewResolvers = viewResolverConfiguraton.getViewResolvers();
for (ViewResolver vr : viewResolvers) {
if (vr instanceof ExtendedInternalResourceViewResolver) {
ExtendedInternalResourceViewResolver resolver = (ExtendedInternalResourceViewResolver) vr;
if (resolver.getPrefix().endsWith("/pages")) {
pagesResolver = resolver;
}
}
}
String prefix = pagesResolver.getPrefix().replaceAll("/$", "");
String suffix = pagesResolver.getSuffix();
String viewName = findViewName(prefix, uri, suffix, false);
if (viewName != null) {
return viewName;
}
throw new ViewNotFoundException();
}
}