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OpenCms is an enterprise-ready, easy to use website content management system based on Java and XML technology. Offering a complete set of features, OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.

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/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH & Co. KG (http://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: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://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.loader.CmsTemplateContext;
import org.opencms.loader.CmsTemplateContextManager;
import org.opencms.util.CmsRequestUtil;

import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;

/**
 * Device selector class which distinguishes between the cases "desktop", "mobile" and "tablet".

*/ public class CmsJspDeviceSelectorDesktopMobileTablet 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"; /** Constant for tablet. */ public static final String C_TABLET = "tablet"; /** The list of types supported by this device selector implementation. */ public static final List TYPES = Arrays.asList(new String[] {C_MOBILE, C_DESKTOP, C_TABLET}); /** 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) { CmsTemplateContext templateContext = (CmsTemplateContext)(req.getAttribute( CmsTemplateContextManager.ATTR_TEMPLATE_CONTEXT)); if ((templateContext != null) && isTemplateContextCompatible(templateContext)) { return templateContext.getKey(); } m_userAgentInfo = new UAgentInfo( req.getHeader(CmsRequestUtil.HEADER_USER_AGENT), req.getHeader(CmsRequestUtil.HEADER_ACCEPT)); if (m_userAgentInfo.detectMobileQuick()) { return C_MOBILE; } if (m_userAgentInfo.getIsTierTablet()) { return C_TABLET; } return C_DESKTOP; } /** * @see org.opencms.jsp.util.I_CmsJspDeviceSelector#getDeviceTypes() */ public List getDeviceTypes() { return TYPES; } /** * Returns the User Agent info.

* * @return the information about the user agent */ public UAgentInfo getUserAgentInfo() { return m_userAgentInfo; } /** * Checks if a template context is compatible with this device selector.

* * @param templateContext the template context to check * * @return true if the template context is compatible */ protected boolean isTemplateContextCompatible(CmsTemplateContext templateContext) { Set contextKeys = new HashSet(templateContext.getProvider().getAllContexts().keySet()); return contextKeys.equals(new HashSet(TYPES)); } }





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