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


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.ParamContainerTag;
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 FmtParamTag extends BodyTagSupport JavaDoc {
41   private static L10N L = new L10N(FmtParamTag.class);
42   
43   private Object JavaDoc _value;
44   private boolean _hasValue;
45
46   /**
47    * Sets the value
48    *
49    * @param key the JSP-EL expression for the key.
50    */
51   public void setValue(Object JavaDoc value)
52   {
53     _value = value;
54     _hasValue = true;
55   }
56
57   /**
58    * Process the tag.
59    */
60   public int doEndTag()
61     throws JspException JavaDoc
62   {
63     Object JavaDoc value = null;
64     
65     if (_hasValue)
66       value = _value;
67     else
68       value = bodyContent.getString().trim();
69
70     Object JavaDoc parent = getParent();
71     if (! (parent instanceof ParamContainerTag))
72       throw new JspException JavaDoc(L.l("fmt:param requires fmt:message parent."));
73
74     ParamContainerTag message = (ParamContainerTag) parent;
75
76     message.addParam(value);
77     
78     return EVAL_PAGE;
79   }
80 }
81
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