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


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.util.L10N;
32
33 import javax.servlet.jsp.JspException JavaDoc;
34 import javax.servlet.jsp.tagext.TagSupport JavaDoc;
35
36 /**
37  * Tag representing an "if" condition.
38  */
39 public class IfTag extends TagSupport JavaDoc {
40   private static L10N L = new L10N(IfTag.class);
41   
42   private boolean _test;
43   private String JavaDoc _var;
44   private String JavaDoc _scope;
45
46   /**
47    * Sets the test value.
48    */
49   public void setTest(boolean test)
50   {
51     _test = test;
52   }
53
54   /**
55    * Sets the variable which should contain the result of the test.
56    */
57   public void setVar(String JavaDoc var)
58   {
59     _var = var;
60   }
61
62   /**
63    * Sets the scope for the variable.
64    */
65   public void setScope(String JavaDoc scope)
66   {
67     _scope = scope;
68   }
69
70   /**
71    * Process the tag.
72    */
73   public int doStartTag()
74     throws JspException JavaDoc
75   {
76     if (_var == null) {
77     }
78     else
79       CoreSetTag.setValue(pageContext, _var, _scope, new Boolean JavaDoc(_test));
80
81     return _test ? EVAL_BODY_INCLUDE : SKIP_BODY;
82   }
83 }
84
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