/*
 * Copyright 1999-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * 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.
 */

/* $Id$ */
 
package org.apache.fop.render;

import org.w3c.dom.Document;

/**
 * This interface is implemented by classes that can handle a certain type
 * of foreign objects.
 */
public interface XMLHandler {

    /**
     * Handle an external xml document inside a Foreign Object Area. <p>
     *
     * This may throw an exception if for some reason it cannot be handled. The
     * caller is expected to deal with this exception.</p>
     *
     * @param context        The RendererContext (contains the user agent)
     * @param doc            A DOM containing the foreign object to be
     *      processed
     * @param ns             The Namespace of the foreign object
     * @exception Exception  If an error occurs during processing.
     */
    void handleXML(RendererContext context, Document doc, String ns)
        throws Exception;

}