001/* 002 * (C) Copyright 2006-2009 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Jean-Marc Orliaguet, Chalmers 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.theme.webengine.fm.extensions; 023 024import java.io.BufferedReader; 025import java.io.IOException; 026import java.io.StringReader; 027import java.net.URL; 028import java.util.Map; 029 030import org.apache.commons.logging.Log; 031import org.apache.commons.logging.LogFactory; 032import org.nuxeo.ecm.webengine.WebEngine; 033import org.nuxeo.ecm.webengine.model.WebContext; 034import org.nuxeo.theme.models.InfoPool; 035import org.nuxeo.theme.themes.ThemeException; 036import org.nuxeo.theme.themes.ThemeManager; 037 038import freemarker.core.Environment; 039import freemarker.ext.beans.BeansWrapper; 040import freemarker.template.Template; 041import freemarker.template.TemplateDirectiveBody; 042import freemarker.template.TemplateDirectiveModel; 043import freemarker.template.TemplateException; 044import freemarker.template.TemplateModel; 045import freemarker.template.TemplateModelException; 046 047/** 048 * @author <a href="mailto:jmo@chalmers.se">Jean-Marc Orliaguet</a> 049 */ 050public class NXThemesFragmentDirective implements TemplateDirectiveModel { 051 052 private static final Log log = LogFactory.getLog(NXThemesFragmentDirective.class); 053 054 final String templateEngine = "freemarker"; 055 056 @SuppressWarnings("unchecked") 057 public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body) 058 throws TemplateException, IOException { 059 060 if (loopVars.length != 0) { 061 throw new TemplateModelException("This directive doesn't allow loop variables."); 062 } 063 if (body != null) { 064 throw new TemplateModelException("Didn't expect a body"); 065 } 066 067 WebContext ctx = WebEngine.getActiveContext(); 068 if (ctx == null) { 069 throw new IllegalStateException("Not In a Web Context"); 070 } 071 072 env.setVariable("nxthemesInfo", BeansWrapper.getDefaultInstance().wrap(InfoPool.getInfoMap())); 073 074 Map<String, String> attributes = Utils.getTemplateDirectiveParameters(params); 075 final URL elementUrl = new URL(String.format("nxtheme://element/%s/%s/%s/%s", attributes.get("engine"), 076 attributes.get("mode"), templateEngine, attributes.get("uid"))); 077 078 String rendered = ""; 079 try { 080 rendered = ThemeManager.renderElement(elementUrl); 081 } catch (ThemeException e) { 082 log.error("Element rendering failed: " + e.getMessage()); 083 return; 084 } 085 StringReader sr = new StringReader(rendered); 086 BufferedReader reader = new BufferedReader(sr); 087 Template tpl = new Template(elementUrl.toString(), reader, env.getConfiguration(), 088 env.getTemplate().getEncoding()); 089 090 try { 091 env.include(tpl); 092 } catch (TemplateException | IOException e) { 093 log.error("Rendering of Freemarker template failed: \n" + rendered, e); 094 } finally { 095 reader.close(); 096 sr.close(); 097 } 098 099 } 100 101}