cmsjsptaglabel.java

内容管理

/*
 * File   : $Source: /usr/local/cvs/opencms/src/com/opencms/flex/jsp/Attic/CmsJspTagLabel.java,v $
 * Date   : $Date: 2003/05/13 13:18:20 $
 * Version: $Revision: 1.3.2.1 $
 *
 * This library is part of OpenCms -
 * the Open Source Content Mananagement System
 *
 * Copyright (C) 2002 - 2003 Alkacon Software (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 com.opencms.flex.jsp;

import com.opencms.core.CmsException;
import com.opencms.flex.cache.CmsFlexController;
import com.opencms.workplace.CmsXmlLanguageFile;
import com.opencms.workplace.CmsXmlWpLabelDefFile;
import com.opencms.workplace.I_CmsWpConstants;

import javax.servlet.ServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

/**
 * Provides access to the labels stored in the
 * language files of the OpenCms workplace.<p>
 * 
 * Instead of using the XML based workplace tags one should 
 * consider using standard Java resource bundles to provide language independent 
 * implementations.
 *
 * @author  Alexander Kandzior ([e-mail])
 * @version $Revision: 1.3.2.1 $
 */
public class CmsJspTagLabel extends BodyTagSupport {
            
    /**
     * @see javax.servlet.jsp.tagext.IterationTag#doAfterBody()
     */
    public int doAfterBody() throws JspException {
        
        ServletRequest req = pageContext.getRequest();
        
        // This will always be true if the page is called through OpenCms 
        if (CmsFlexController.isCmsRequest(req)) {
            try {                       
                
                // Get label string from the body and reset body 
                BodyContent body = this.getBodyContent();
                String label = body.getString();            
                body.clearBody();                  
                
                // Get the result...
                String result = wpLabelTagAction(label, req);
                this.getPreviousOut().print(result);
                
            } catch (Exception ex) {
                System.err.println("Error in Jsp 'label' tag processing: " + ex);
                System.err.println(com.opencms.util.Utils.getStackTrace(ex));
                throw new javax.servlet.jsp.JspException(ex);
            }            
        }
        return SKIP_BODY;
    }

    /**
     * Internal action method.<p>
     * 
     * @param label the label to look up
     * @param req the current request
     * @return String the value of the selected lable
     * @throws CmsException in case something goes wrong
     */    
    public static String wpLabelTagAction(String label, ServletRequest req) 
    throws CmsException {
        CmsXmlWpLabelDefFile labeldeffile;
        CmsXmlLanguageFile langfile;
        
        CmsFlexController controller = (CmsFlexController)req.getAttribute(CmsFlexController.ATTRIBUTE_NAME);
        
        labeldeffile = new CmsXmlWpLabelDefFile(controller.getCmsObject(), I_CmsWpConstants.C_VFS_PATH_WORKPLACE +  I_CmsWpConstants.C_VFS_DIR_TEMPLATES + I_CmsWpConstants.C_LABELTEMPLATE);
        langfile = new CmsXmlLanguageFile(controller.getCmsObject());
        
        return labeldeffile.getLabel(langfile.getLanguageValue(label));                        
    }

}