1 /*
2 * $Id: NestedOptionsTag.java 471754 2006-11-06 14:55:09Z husted $
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21 package org.apache.struts.taglib.nested.html;
22
23 import org.apache.struts.taglib.html.Constants;
24 import org.apache.struts.taglib.html.OptionsTag;
25 import org.apache.struts.taglib.nested.NestedNameSupport;
26 import org.apache.struts.taglib.nested.NestedPropertyHelper;
27
28 import javax.servlet.http.HttpServletRequest;
29 import javax.servlet.jsp.JspException;
30
31 /**
32 * NestedOptionsTag.
33 *
34 * @version $Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004)
35 * $
36 * @since Struts 1.1
37 */
38 public class NestedOptionsTag extends OptionsTag implements NestedNameSupport {
39 /* the usual private member variables */
40 private String originalName = null;
41 private String originalProperty = null;
42 private String originalLabelProperty = null;
43
44 /**
45 * Overriding method of the heart of the matter. Gets the relative
46 * property and leaves the rest up to the original tag implementation.
47 * Sweet.
48 *
49 * @return int JSP continuation directive. This is in the hands of the
50 * super class.
51 */
52 public int doStartTag() throws JspException {
53 // get the original properties
54 originalName = getName();
55 originalProperty = getProperty();
56 originalLabelProperty = getLabelProperty();
57
58 // request
59 HttpServletRequest request =
60 (HttpServletRequest) pageContext.getRequest();
61
62 // if we have a label property
63 if (originalLabelProperty != null) {
64 // do the label property first
65 if ((getName() == null) || Constants.BEAN_KEY.equals(getName())) {
66 super.setLabelProperty(NestedPropertyHelper.getAdjustedProperty(
67 request, originalLabelProperty));
68 } else {
69 super.setLabelProperty(originalLabelProperty);
70 }
71 }
72
73 // set the other properties
74 NestedPropertyHelper.setNestedProperties(request, this);
75
76 // let the super do it's thing
77 return super.doStartTag();
78 }
79
80 /**
81 * Complete the processing of the tag. The nested tags here will restore
82 * all the original value for the tag itself and the nesting context.
83 *
84 * @return int to describe the next step for the JSP processor
85 * @throws JspException for the bad things JSP's do
86 */
87 public int doEndTag() throws JspException {
88 // do the super's ending part
89 int i = super.doEndTag();
90
91 // reset the properties
92 setName(originalName);
93 setProperty(originalProperty);
94 setLabelProperty(originalLabelProperty);
95
96 // continue
97 return i;
98 }
99
100 /**
101 * Release the tag's resources and reset the values.
102 */
103 public void release() {
104 super.release();
105
106 // reset the originals
107 originalName = null;
108 originalProperty = null;
109 originalLabelProperty = null;
110 }
111 }