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 package examples;
18
19 import java.io.IOException;
20
21 import javax.servlet.jsp.JspException;
22 import javax.servlet.jsp.JspTagException;
23
24 /**
25 * Example1: the simplest tag
26 * Collect attributes and call into some actions
27 * <p/>
28 * <foo att1="..." att2="...." att3="...." />
29 */
30
31 public class FooTag
32 extends ExampleTagBase {
33 private String atts[] = new String[3];
34 int i = 0;
35
36 private final void setAtt(int index, String value) {
37 atts[index] = value;
38 }
39
40 public void setAtt1(String value) {
41 setAtt(0, value);
42 }
43
44 public void setAtt2(String value) {
45 setAtt(1, value);
46 }
47
48 public void setAtt3(String value) {
49 setAtt(2, value);
50 }
51
52 /**
53 * Process start tag
54 *
55 * @return EVAL_BODY_INCLUDE
56 */
57 public int doStartTag() throws JspException {
58 i = 0;
59 return EVAL_BODY_TAG;
60 }
61
62 public void doInitBody() throws JspException {
63 pageContext.setAttribute("member", atts[i]);
64 i++;
65 }
66
67 public int doAfterBody() throws JspException {
68 try {
69 if (i == 3) {
70 bodyOut.writeOut(bodyOut.getEnclosingWriter());
71 return SKIP_BODY;
72 } else
73 pageContext.setAttribute("member", atts[i]);
74 i++;
75 return EVAL_BODY_TAG;
76 } catch (IOException ex) {
77 throw new JspTagException(ex.toString());
78 }
79 }
80 }
81