| /* |
| * 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: TraceListener.java 468644 2006-10-28 06:56:42Z minchau $ |
| */ |
| package org.apache.xalan.trace; |
| |
| |
| /** |
| * Interface the XSL processor calls when it matches a source node, selects a set of source nodes, |
| * or generates a result node. |
| * If you want an object instance to be called when a trace event occurs, use the TransformerImpl setTraceListener method. |
| * @see org.apache.xalan.trace.TracerEvent |
| * @see org.apache.xalan.trace.TraceManager#addTraceListener |
| * @xsl.usage advanced |
| */ |
| public interface TraceListener extends java.util.EventListener |
| { |
| |
| /** |
| * Method that is called when a trace event occurs. |
| * The method is blocking. It must return before processing continues. |
| * |
| * @param ev the trace event. |
| */ |
| public void trace(TracerEvent ev); |
| |
| /** |
| * Method that is called just after the formatter listener is called. |
| * |
| * @param ev the generate event. |
| * |
| * @throws javax.xml.transform.TransformerException |
| */ |
| public void selected(SelectionEvent ev) throws javax.xml.transform.TransformerException; |
| |
| /** |
| * Method that is called just after the formatter listener is called. |
| * |
| * @param ev the generate event. |
| */ |
| public void generated(GenerateEvent ev); |
| } |