001/*
002 * (C) Copyright 2006-2011 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 *     bstefanescu
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.platform.rendering.fm.extensions;
023
024import java.io.IOException;
025import java.util.Map;
026
027import freemarker.core.Environment;
028import freemarker.template.SimpleScalar;
029import freemarker.template.TemplateDirectiveBody;
030import freemarker.template.TemplateDirectiveModel;
031import freemarker.template.TemplateException;
032import freemarker.template.TemplateModel;
033
034/**
035 * @author <a href="mailto:[email protected]">Bogdan Stefanescu</a>
036 */
037public class BlockDirective implements TemplateDirectiveModel {
038
039    @Override
040    @SuppressWarnings("rawtypes")
041    public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body)
042            throws TemplateException, IOException {
043
044        String name = null;
045        SimpleScalar scalar = (SimpleScalar) params.get("name");
046        if (scalar != null) {
047            name = scalar.getAsString();
048        }
049
050        scalar = (SimpleScalar) params.get("ifBlockDefined");
051        String ifBlockDefined = null;
052        if (scalar != null) {
053            ifBlockDefined = scalar.getAsString();
054        }
055
056        String page = env.getTemplate().getName();
057        BlockWriter writer = (BlockWriter) env.getOut();
058        BlockWriterRegistry reg = writer.getRegistry();
059        BlockWriter bw = new BlockWriter(page, name, reg);
060        bw.ifBlockDefined = ifBlockDefined;
061        writer.writeBlock(bw);
062        // render this block
063        if (body != null) {
064            body.render(bw);
065        }
066    }
067
068}