01: /*
02: * $Id: NestedFileTag.java 471754 2006-11-06 14:55:09Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "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.FileTag;
24: import org.apache.struts.taglib.nested.NestedNameSupport;
25: import org.apache.struts.taglib.nested.NestedPropertyHelper;
26:
27: import javax.servlet.http.HttpServletRequest;
28: import javax.servlet.jsp.JspException;
29:
30: /**
31: * NestedFileTag.
32: *
33: * @version $Rev: 471754 $
34: * @since Struts 1.1
35: */
36: public class NestedFileTag extends FileTag implements NestedNameSupport {
37: /* the usual private member variables */
38: private String originalName = null;
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: originalName = getName();
52: originalProperty = getProperty();
53:
54: // request
55: HttpServletRequest request = (HttpServletRequest) pageContext
56: .getRequest();
57:
58: // set the properties
59: NestedPropertyHelper.setNestedProperties(request, this );
60:
61: // let the super do it's thing
62: return super .doStartTag();
63: }
64:
65: /**
66: * Complete the processing of the tag. The nested tags here will restore
67: * all the original value for the tag itself and the nesting context.
68: *
69: * @return int to describe the next step for the JSP processor
70: * @throws JspException for the bad things JSP's do
71: */
72: public int doEndTag() throws JspException {
73: // do the super's ending part
74: int i = super .doEndTag();
75:
76: // reset the properties
77: setName(originalName);
78: setProperty(originalProperty);
79:
80: // continue
81: return i;
82: }
83:
84: /**
85: * Release the tag's resources and reset the values.
86: */
87: public void release() {
88: super .release();
89:
90: // reset the originals
91: originalName = null;
92: originalProperty = null;
93: }
94: }
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