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.IOException;
023import java.io.StringWriter;
024import java.net.URL;
025import java.util.Map;
026
027import javax.servlet.http.HttpServletRequest;
028
029import org.nuxeo.ecm.webengine.WebEngine;
030import org.nuxeo.ecm.webengine.model.WebContext;
031import org.nuxeo.theme.Manager;
032
033import freemarker.core.Environment;
034import freemarker.template.TemplateDirectiveBody;
035import freemarker.template.TemplateDirectiveModel;
036import freemarker.template.TemplateException;
037import freemarker.template.TemplateModel;
038import freemarker.template.TemplateModelException;
039
040/**
041 * @author <a href="mailto:jmo@chalmers.se">Jean-Marc Orliaguet</a>
042 */
043public class NXThemesRequireDirective implements TemplateDirectiveModel {
044
045    public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body)
046            throws TemplateException, IOException {
047
048        if (!params.isEmpty()) {
049            throw new TemplateModelException("This directive doesn't allow parameters.");
050        }
051        if (loopVars.length != 0) {
052            throw new TemplateModelException("This directive doesn't allow loop variables.");
053        }
054        if (body == null) {
055            throw new TemplateModelException("This directive expects a body");
056        }
057
058        WebContext context = WebEngine.getActiveContext();
059        HttpServletRequest request = context.getRequest();
060        final URL themeUrl = (URL) request.getAttribute("org.nuxeo.theme.url");
061
062        StringWriter sw = new StringWriter();
063        body.render(sw);
064        String resourceName = sw.getBuffer().toString();
065
066        // Register as a local resource
067        final boolean local = true;
068        Manager.getResourceManager().addResource(resourceName, themeUrl, local);
069    }
070}