1 /*
2 * $Id: NestedSubmitTag.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.SubmitTag;
24 import org.apache.struts.taglib.nested.NestedPropertyHelper;
25 import org.apache.struts.taglib.nested.NestedPropertySupport;
26
27 import javax.servlet.http.HttpServletRequest;
28 import javax.servlet.jsp.JspException;
29
30 /**
31 * NestedSubmitTag.
32 *
33 * @version $Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004)
34 * $
35 * @since Struts 1.1
36 */
37 public class NestedSubmitTag extends SubmitTag implements NestedPropertySupport {
38 /* the usual private member variables */
39 private String originalProperty = null;
40
41 /**
42 * Overriding method of the heart of the matter. Gets the relative
43 * property and leaves the rest up to the original tag implementation.
44 * Sweet.
45 *
46 * @return int JSP continuation directive. This is in the hands of the
47 * super class.
48 */
49 public int doStartTag() throws JspException {
50 // get the original properties
51 originalProperty = getProperty();
52
53 // request
54 HttpServletRequest request =
55 (HttpServletRequest) pageContext.getRequest();
56
57 // set the properties
58 NestedPropertyHelper.setNestedProperties(request, this);
59
60 // let the super do it's thing
61 return super.doStartTag();
62 }
63
64 /**
65 * Complete the processing of the tag. The nested tags here will restore
66 * all the original value for the tag itself and the nesting context.
67 *
68 * @return int to describe the next step for the JSP processor
69 * @throws JspException for the bad things JSP's do
70 */
71 public int doEndTag() throws JspException {
72 // do the super's ending part
73 int i = super.doEndTag();
74
75 // reset the properties
76 setProperty(originalProperty);
77
78 // continue
79 return i;
80 }
81
82 /**
83 * Release the tag's resources and reset the values.
84 */
85 public void release() {
86 super.release();
87
88 // reset the originals
89 originalProperty = null;
90 }
91 }