001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements. See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership. The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the  "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    /*
019     * $Id: TraceListenerEx3.java 468644 2006-10-28 06:56:42Z minchau $
020     */
021     
022    package org.apache.xalan.trace;
023    
024    /**
025     * Extends TraceListenerEx2 but adds extensions trace events.
026     * @xsl.usage advanced
027     */
028    public interface TraceListenerEx3 extends TraceListenerEx2 {
029    
030            /**
031             * Method that is called when an extension event occurs.
032             * The method is blocking.  It must return before processing continues.
033             *
034             * @param ee the extension event.
035             */
036            public void extension(ExtensionEvent ee);
037    
038            /**
039             * Method that is called when the end of an extension event occurs.
040             * The method is blocking.  It must return before processing continues.
041             *
042             * @param ee the extension event.
043             */
044            public void extensionEnd(ExtensionEvent ee);
045    
046    }
047