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.IOException; 025import java.io.Writer; 026import java.util.Map; 027 028import org.nuxeo.theme.html.ui.MVCElement; 029 030import freemarker.core.Environment; 031import freemarker.template.TemplateDirectiveBody; 032import freemarker.template.TemplateDirectiveModel; 033import freemarker.template.TemplateException; 034import freemarker.template.TemplateModel; 035import freemarker.template.TemplateModelException; 036 037/** 038 * @author <a href="mailto:jmo@chalmers.se">Jean-Marc Orliaguet</a> 039 */ 040public abstract class NXThemesBaseMVC implements TemplateDirectiveModel { 041 042 public abstract String getClassName(); 043 044 @SuppressWarnings("unchecked") 045 public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body) 046 throws TemplateException, IOException { 047 048 if (loopVars.length != 0) { 049 throw new TemplateModelException("This directive doesn't allow loop variables."); 050 } 051 if (body != null) { 052 throw new TemplateModelException("Didn't expect a body"); 053 } 054 055 Writer writer = env.getOut(); 056 Map<String, String> attributes = Utils.getTemplateDirectiveParameters(params); 057 attributes.put("className", getClassName()); 058 writer.write(MVCElement.render(attributes)); 059 } 060 061}