1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18
19 package jsp2.examples.simpletag;
20
21 import java.io.IOException;
22 import java.util.ArrayList;
23
24 import javax.servlet.jsp.JspException;
25 import javax.servlet.jsp.JspWriter;
26 import javax.servlet.jsp.tagext.DynamicAttributes;
27 import javax.servlet.jsp.tagext.SimpleTagSupport;
28
29 /**
30 * SimpleTag handler that echoes all its attributes
31 */
32 public class EchoAttributesTag
33 extends SimpleTagSupport
34 implements DynamicAttributes {
35 private ArrayList keys = new ArrayList();
36 private ArrayList values = new ArrayList();
37
38 public void doTag() throws JspException, IOException {
39 JspWriter out = getJspContext().getOut();
40 for (int i = 0; i < keys.size(); i++) {
41 String key = (String) keys.get(i);
42 Object value = values.get(i);
43 out.println("<li>" + key + " = " + value + "</li>");
44 }
45 }
46
47 public void setDynamicAttribute(String uri, String localName,
48 Object value)
49 throws JspException {
50 keys.add(localName);
51 values.add(value);
52 }
53 }