001/* 002 * This library is part of OpenCms - 003 * the Open Source Content Management System 004 * 005 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) 006 * 007 * This library is free software; you can redistribute it and/or 008 * modify it under the terms of the GNU Lesser General Public 009 * License as published by the Free Software Foundation; either 010 * version 2.1 of the License, or (at your option) any later version. 011 * 012 * This library is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * For further information about Alkacon Software GmbH & Co. KG, please see the 018 * company website: http://www.alkacon.com 019 * 020 * For further information about OpenCms, please see the 021 * project website: http://www.opencms.org 022 * 023 * You should have received a copy of the GNU Lesser General Public 024 * License along with this library; if not, write to the Free Software 025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 026 */ 027 028package org.opencms.jsp; 029 030import org.opencms.file.CmsObject; 031import org.opencms.flex.CmsFlexController; 032import org.opencms.i18n.CmsMessages; 033import org.opencms.main.CmsLog; 034import org.opencms.main.OpenCms; 035 036import javax.servlet.ServletRequest; 037import javax.servlet.jsp.JspException; 038import javax.servlet.jsp.tagext.BodyContent; 039import javax.servlet.jsp.tagext.BodyTagSupport; 040 041import org.apache.commons.logging.Log; 042 043/** 044 * Provides access to the labels stored in the 045 * language files of the OpenCms workplace.<p> 046 * 047 * Instead of using the XML based workplace tags one should 048 * consider using standard Java resource bundles to provide language independent 049 * implementations.<p> 050 * 051 * @since 6.0.0 052 */ 053public class CmsJspTagLabel extends BodyTagSupport { 054 055 /** The log object for this class. */ 056 private static final Log LOG = CmsLog.getLog(CmsJspTagLabel.class); 057 058 /** Serial version UID required for safe serialization. */ 059 private static final long serialVersionUID = 5720473164730803034L; 060 061 /** 062 * Internal action method.<p> 063 * 064 * @param label the label to look up 065 * @param req the current request 066 * @return String the value of the selected label 067 */ 068 public static String wpLabelTagAction(String label, ServletRequest req) { 069 070 CmsObject cms = CmsFlexController.getCmsObject(req); 071 CmsMessages messages = OpenCms.getWorkplaceManager().getMessages(cms.getRequestContext().getLocale()); 072 return messages.key(label); 073 } 074 075 /** 076 * @see javax.servlet.jsp.tagext.IterationTag#doAfterBody() 077 */ 078 @Override 079 public int doAfterBody() throws JspException { 080 081 ServletRequest req = pageContext.getRequest(); 082 083 // This will always be true if the page is called through OpenCms 084 if (CmsFlexController.isCmsRequest(req)) { 085 try { 086 087 // Get label string from the body and reset body 088 BodyContent body = getBodyContent(); 089 String label = body.getString(); 090 body.clearBody(); 091 092 // Get the result... 093 String result = wpLabelTagAction(label, req); 094 getPreviousOut().print(result); 095 096 } catch (Exception ex) { 097 if (LOG.isErrorEnabled()) { 098 LOG.error(Messages.get().getBundle().key(Messages.ERR_PROCESS_TAG_1, "label"), ex); 099 } 100 throw new javax.servlet.jsp.JspException(ex); 101 } 102 } 103 return SKIP_BODY; 104 } 105 106}