/*
 * Copyright (C) 2005 Alfresco, Inc.
 *
 * Licensed under the Mozilla Public License version 1.1 
 * with a permitted attribution clause. You may obtain a
 * copy of the License at
 *
 *   http://www.alfresco.org/legal/license.txt
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the
 * License.
 */
package org.alfresco.repo.template;

import java.util.Map;

import org.alfresco.service.namespace.QNameMap;

import freemarker.template.DefaultObjectWrapper;
import freemarker.template.ObjectWrapper;
import freemarker.template.SimpleHash;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;

/**
 * @author Kevin Roast
 */
public class QNameAwareObjectWrapper extends DefaultObjectWrapper
{
    /**
     * Override to support wrapping of a QNameNodeMap by our custom wrapper object
     */
    public TemplateModel wrap(Object obj) throws TemplateModelException
    {
        if (obj instanceof QNameMap)
        {
            return new QNameHash((QNameMap)obj, this);
        }
        else
        {
            return super.wrap(obj);
        }
    }
    
    
    /**
     * Inner class to support clone of QNameNodeMap
     */
    class QNameHash extends SimpleHash
    {
        /**
         * Constructor
         * 
         * @param map
         * @param wrapper
         */
        public QNameHash(QNameMap map, ObjectWrapper wrapper)
        {
            super(map, wrapper);
        }
        
        /**
         * Override to support clone of a QNameNodeMap object
         */
        protected Map copyMap(Map map)
        {
            if (map instanceof QNameMap)
            {
                return (Map)((QNameMap)map).clone();
            }
            else
            {
                return super.copyMap(map);
            }
        }
    }
}