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Java > Open Source Codes > org > apache > struts > taglib > nested > html > NestedImageTag


1 /*
2  * $Id: NestedImageTag.java 54929 2004-10-16 16:38:42Z germuska $
3  *
4  * Copyright 1999-2004 The Apache Software Foundation.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */

18 package org.apache.struts.taglib.nested.html;
19
20 import javax.servlet.http.HttpServletRequest JavaDoc;
21 import javax.servlet.jsp.JspException JavaDoc;
22
23 import org.apache.struts.taglib.html.ImageTag;
24 import org.apache.struts.taglib.nested.NestedPropertyHelper;
25 import org.apache.struts.taglib.nested.NestedPropertySupport;
26
27 /**
28  * NestedMultiboxTag.
29  * @since Struts 1.1
30  * @version $Rev: 54929 $ $Date: 2004-10-16 17:38:42 +0100 (Sat, 16 Oct 2004) $
31  */

32 public class NestedImageTag extends ImageTag implements NestedPropertySupport {
33
34   /**
35    * Overriding method of the heart of the matter. Gets the relative property
36    * and leaves the rest up to the original tag implementation. Sweet.
37    * @return int JSP continuation directive.
38    * This is in the hands of the super class.
39    */

40   public int doStartTag() throws JspException JavaDoc {
41     // get the original properties
42
originalProperty = getProperty();
43
44     // request
45
HttpServletRequest JavaDoc request = (HttpServletRequest JavaDoc)pageContext.getRequest();
46     // set the properties
47
NestedPropertyHelper.setNestedProperties(request, this);
48
49     // let the super do it's thing
50
return super.doStartTag();
51   }
52
53   /**
54    * Complete the processing of the tag. The nested tags here will restore
55    * all the original value for the tag itself and the nesting context.
56    * @return int to describe the next step for the JSP processor
57    * @throws JspException for the bad things JSP's do
58    */

59   public int doEndTag() throws JspException JavaDoc {
60     // do the super's ending part
61
int i = super.doEndTag();
62     // reset the properties
63
setProperty(originalProperty);
64     // continue
65
return i;
66   }
67
68   /**
69    * Release the tag's resources and reset the values.
70    */

71   public void release() {
72     super.release();
73     // reset the originals
74
originalProperty = null;
75   }
76
77   /* the usual private member variables */
78   private String JavaDoc originalProperty = null;
79 }
80
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