LocaleProvider.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.turro.zkoss.locale;
 
import java.util.Locale;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.turro.elephant.zkoss.ZkossElephant;
import org.zkoss.web.Attributes;
import org.zkoss.zk.ui.Session;
import org.zkoss.zk.ui.util.RequestInterceptor;
 
public class LocaleProvider implements RequestInterceptor {
 
  @Override
  public void request(Session sess, Object request, Object response) {
    final Cookie[] cookies = ((HttpServletRequest) request).getCookies();
    if (cookies != null) {
      for (int j = cookies.length; --j >= 0;) {
        if (cookies[j].getName().equals("lang")) {
          String val = cookies[j].getValue();
          if(val != null) {
            //sess.removeAttribute(Attributes.PREFERRED_LOCALE);
            if(val.startsWith("_")) val = val.substring(1);
            Locale locale = org.zkoss.util.Locales.getLocale(val);
            sess.setAttribute(Attributes.PREFERRED_LOCALE, locale);
          }
          break;
        }
      }
    }
    ZkossElephant.instance((HttpServletRequest) request, (HttpServletResponse) response);
  }
 
}