001    /*
002    * Licensed to the Apache Software Foundation (ASF) under one or more
003    * contributor license agreements.  See the NOTICE file distributed with
004    * this work for additional information regarding copyright ownership.
005    * The ASF licenses this file to You under the Apache License, Version 2.0
006    * (the "License"); you may not use this file except in compliance with
007    * the License.  You may obtain a copy of the License at
008    *
009    *     http://www.apache.org/licenses/LICENSE-2.0
010    *
011    * Unless required by applicable law or agreed to in writing, software
012    * distributed under the License is distributed on an "AS IS" BASIS,
013    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014    * See the License for the specific language governing permissions and
015    * limitations under the License.
016    */
017    
018    
019    package jsp2.examples.simpletag;
020    
021    import java.io.IOException;
022    import java.util.ArrayList;
023    
024    import javax.servlet.jsp.JspException;
025    import javax.servlet.jsp.JspWriter;
026    import javax.servlet.jsp.tagext.DynamicAttributes;
027    import javax.servlet.jsp.tagext.SimpleTagSupport;
028    
029    /**
030     * SimpleTag handler that echoes all its attributes
031     */
032    public class EchoAttributesTag
033            extends SimpleTagSupport
034            implements DynamicAttributes {
035        private ArrayList keys = new ArrayList();
036        private ArrayList values = new ArrayList();
037    
038        public void doTag() throws JspException, IOException {
039            JspWriter out = getJspContext().getOut();
040            for (int i = 0; i < keys.size(); i++) {
041                String key = (String) keys.get(i);
042                Object value = values.get(i);
043                out.println("<li>" + key + " = " + value + "</li>");
044            }
045        }
046    
047        public void setDynamicAttribute(String uri, String localName,
048                                        Object value)
049                throws JspException {
050            keys.add(localName);
051            values.add(value);
052        }
053    }