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Java > Open Source Codes > com > caucho > jstl > rt > XmlParamTag


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.jstl.rt;
30
31 import com.caucho.jstl.NameValueTag;
32 import com.caucho.util.L10N;
33
34 import javax.servlet.jsp.JspException JavaDoc;
35 import javax.servlet.jsp.tagext.BodyTagSupport JavaDoc;
36
37 /**
38  * Looks up an i18n message from a bundle and prints it.
39  */
40 public class XmlParamTag extends BodyTagSupport JavaDoc {
41   private static L10N L = new L10N(XmlParamTag.class);
42   
43   private String JavaDoc _name;
44   private String JavaDoc _value;
45
46   /**
47    * Sets the name
48    *
49    * @param name the JSP-EL expression for the name.
50    */
51   public void setName(String JavaDoc name)
52   {
53     _name = name;
54   }
55
56   /**
57    * Sets the value
58    *
59    * @param value the JSP-EL expression for the value.
60    */
61   public void setValue(String JavaDoc value)
62   {
63     _value = value;
64   }
65
66   /**
67    * Process the tag.
68    */
69   public int doStartTag()
70     throws JspException JavaDoc
71   {
72     if (_value == null)
73       return EVAL_BODY_BUFFERED;
74     
75     Object JavaDoc parent = getParent();
76     if (! (parent instanceof NameValueTag))
77       throw new JspException JavaDoc(L.l("x:param requires x:transform parent."));
78
79     NameValueTag tag = (NameValueTag) parent;
80
81     tag.addParam(_name, _value);
82     
83     return SKIP_BODY;
84   }
85
86   /**
87    * Process the tag.
88    */
89   public int doEndTag()
90     throws JspException JavaDoc
91   {
92     if (_value != null)
93       return EVAL_PAGE;
94       
95     String JavaDoc value;
96
97     if (bodyContent != null)
98       value = bodyContent.getString().trim();
99     else
100       value = "";
101     
102     Object JavaDoc parent = getParent();
103     if (! (parent instanceof NameValueTag))
104       throw new JspException JavaDoc(L.l("x:param requires x:transform parent."));
105
106     NameValueTag tag = (NameValueTag) parent;
107
108     tag.addParam(_name, value);
109     
110     return EVAL_PAGE;
111   }
112 }
113
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