package info.bliki.gae.servlets;
import java.util.Locale;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;
import org.springframework.web.servlet.support.RequestContextUtils;
/**
* This method extends the Spring <code>LocaleChangeInterceptor</code> to search
* for and use a locale key in either the session or the request if one can be
* found.
*/
public class BlikiLocaleInterceptor extends LocaleChangeInterceptor {
// private static final WikiLogger logger =
// WikiLogger.getLogger(JAMWikiServlet.class.getName());
/**
* Ensure that the session locale value is set.
*/
public boolean preHandle(HttpServletRequest request,
HttpServletResponse response, Object handler) throws ServletException {
Locale locale = (Locale) request.getSession().getAttribute(
SessionLocaleResolver.LOCALE_SESSION_ATTRIBUTE_NAME);
if (locale == null) {
locale = this.setUserLocale(request, response);
}
if (locale != null) {
LocaleResolver resolver = RequestContextUtils.getLocaleResolver(request);
if (resolver != null) {
resolver.setLocale(request, response, locale);
}
}
return super.preHandle(request, response, handler);
}
/**
*
*/
private Locale retrieveUserLocale(HttpServletRequest request)
throws ServletException {
Locale locale = null;
// try {
// WikiUser user = ServletUtil.currentWikiUser();
// locale = LocaleUtils.toLocale(user.getDefaultLocale());
// } catch (AuthenticationCredentialsNotFoundException e) {
// // do nothing, just use a default locale
// }
return locale;
}
/**
*
*/
private Locale setUserLocale(HttpServletRequest request,
HttpServletResponse response) throws ServletException {
Locale locale = this.retrieveUserLocale(request);
request.getSession().setAttribute(
SessionLocaleResolver.LOCALE_SESSION_ATTRIBUTE_NAME, locale);
return locale;
}
}