| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 { |
| |
| /** Used to indicate that all MIME types or XML namespaces are handled. */ |
| String HANDLE_ALL = "*"; |
| |
| /** |
| * <p>Handle an external xml document inside a Foreign Object Area. |
| * </p> |
| * <p>This may throw an exception if for some reason it cannot be handled. The |
| * caller is expected to deal with this exception. |
| * </p> |
| * <p>The implementation may convert the XML document internally to another |
| * XML dialect (SVG, for example) and call renderXML() on the AbstractRenderer |
| * again (which can be retrieved through the RendererContext).</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; |
| |
| /** |
| * Checks if this XMLHandler supports handling an XML namespace for a particular renderer. |
| * @param renderer the renderer for which to check. |
| * @return true if this XML handler supports a particular renderer |
| */ |
| boolean supportsRenderer(Renderer renderer); |
| |
| /** |
| * @return the XML namespace for the XML dialect this XMLHandler supports, |
| * null if all XML content is handled by this instance. |
| */ |
| String getNamespace(); |
| } |
| |