001/* 002 * (C) Copyright 2006-2009 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Jean-Marc Orliaguet, Chalmers 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.theme.webengine.fm.extensions; 021 022import java.io.BufferedReader; 023import java.io.IOException; 024import java.io.StringReader; 025import java.net.URL; 026import java.util.Map; 027 028import org.apache.commons.logging.Log; 029import org.apache.commons.logging.LogFactory; 030import org.nuxeo.ecm.webengine.WebEngine; 031import org.nuxeo.ecm.webengine.model.WebContext; 032import org.nuxeo.theme.models.InfoPool; 033import org.nuxeo.theme.themes.ThemeException; 034import org.nuxeo.theme.themes.ThemeManager; 035 036import freemarker.core.Environment; 037import freemarker.ext.beans.BeansWrapper; 038import freemarker.template.Template; 039import freemarker.template.TemplateDirectiveBody; 040import freemarker.template.TemplateDirectiveModel; 041import freemarker.template.TemplateException; 042import freemarker.template.TemplateModel; 043import freemarker.template.TemplateModelException; 044 045/** 046 * @author <a href="mailto:jmo@chalmers.se">Jean-Marc Orliaguet</a> 047 */ 048public class NXThemesFragmentDirective implements TemplateDirectiveModel { 049 050 private static final Log log = LogFactory.getLog(NXThemesFragmentDirective.class); 051 052 final String templateEngine = "freemarker"; 053 054 @SuppressWarnings("unchecked") 055 public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body) 056 throws TemplateException, IOException { 057 058 if (loopVars.length != 0) { 059 throw new TemplateModelException("This directive doesn't allow loop variables."); 060 } 061 if (body != null) { 062 throw new TemplateModelException("Didn't expect a body"); 063 } 064 065 WebContext ctx = WebEngine.getActiveContext(); 066 if (ctx == null) { 067 throw new IllegalStateException("Not In a Web Context"); 068 } 069 070 env.setVariable("nxthemesInfo", BeansWrapper.getDefaultInstance().wrap(InfoPool.getInfoMap())); 071 072 Map<String, String> attributes = Utils.getTemplateDirectiveParameters(params); 073 final URL elementUrl = new URL(String.format("nxtheme://element/%s/%s/%s/%s", attributes.get("engine"), 074 attributes.get("mode"), templateEngine, attributes.get("uid"))); 075 076 String rendered = ""; 077 try { 078 rendered = ThemeManager.renderElement(elementUrl); 079 } catch (ThemeException e) { 080 log.error("Element rendering failed: " + e.getMessage()); 081 return; 082 } 083 StringReader sr = new StringReader(rendered); 084 BufferedReader reader = new BufferedReader(sr); 085 Template tpl = new Template(elementUrl.toString(), reader, env.getConfiguration(), 086 env.getTemplate().getEncoding()); 087 088 try { 089 env.include(tpl); 090 } catch (TemplateException | IOException e) { 091 log.error("Rendering of Freemarker template failed: \n" + rendered, e); 092 } finally { 093 reader.close(); 094 sr.close(); 095 } 096 097 } 098 099}