content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * 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.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.jsp.util;
  
  import org.opencms.util.CmsRequestUtil;
  
  import java.util.Arrays;
  import java.util.List;
  
  import javax.servlet.http.HttpServletRequest;
  
  /**
   * This class provides the detection for different devices, so that the
   * <code>&lt;cms:device type="..."&gt;</code>-Tag can detect which device sends the HTTP request.<p>
   *
   * @since 8.0.0
   */
  public class CmsJspDeviceSelector implements I_CmsJspDeviceSelector {
  
      /** Constant for desktop detection. */
      public static final String C_DESKTOP = "desktop";
  
      /** Constant for mobile detection. */
      public static final String C_MOBILE = "mobile";
  
      /** The list of types supported by this device selector implementation. */
      public static final List<String> TYPES = Arrays.asList(new String[] {C_MOBILE, C_DESKTOP});
  
      /** The user agent info. */
      private UAgentInfo m_userAgentInfo;
  
      /**
       * @see org.opencms.jsp.util.I_CmsJspDeviceSelector#getDeviceType(javax.servlet.http.HttpServletRequest)
       */
      public String getDeviceType(HttpServletRequest req) {
  
          m_userAgentInfo = new UAgentInfo(
              req.getHeader(CmsRequestUtil.HEADER_USER_AGENT),
              req.getHeader(CmsRequestUtil.HEADER_ACCEPT));
          if (m_userAgentInfo.detectMobileQuick()) {
              return C_MOBILE;
          }
          return C_DESKTOP;
      }
  
      /**
       * @see org.opencms.jsp.util.I_CmsJspDeviceSelector#getDeviceTypes()
       */
      public List<String> getDeviceTypes() {
  
          return TYPES;
      }
  
      /**
       * Returns the User Agent info.<p>
       *
       * @return the information about the user agent
       */
      public UAgentInfo getUserAgentInfo() {
  
          return m_userAgentInfo;
      }
  }
  