/**
* Copyright (C) 2011 JTalks.org Team
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jtalks.jcommune.web.interceptors;
import org.jtalks.jcommune.model.entity.Language;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Class for intercepting and checking correct language.
* We need this one because spring locale interceptor throw exception when user set incorrect data for language.
*
* @author Andrey Ivanov
*/
public class LocaleInterceptor extends HandlerInterceptorAdapter {
private LocaleChangeInterceptor springInterceptor;
public LocaleInterceptor(LocaleChangeInterceptor springInterceptor) {
this.springInterceptor = springInterceptor;
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws ServletException {
String settedLocale = request.getParameter(this.springInterceptor.getParamName());
if (settedLocale != null) {
Boolean isValid = false;
for (Language lang : Language.values()) {
if (lang.getLanguageCode().equals(settedLocale)) {
isValid = true;
break;
}
}
if (!isValid) return true;
}
return this.springInterceptor.preHandle(request, response, handler);
}
}