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Java > Open Source Codes > org > meshcms > taglib > IfModule


1 /*
2  * MeshCMS - A simple CMS based on SiteMesh
3  * Copyright (C) 2004-2007 Luciano Vernaschi
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License
7  * as published by the Free Software Foundation; either version 2
8  * of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18  *
19  * You can contact the author at http://www.cromoteca.com
20  * and at info@cromoteca.com
21  */
22
23 package org.meshcms.taglib;
24
25 import java.io.*;
26
27 /**
28  * This tag allows its contents to be written only when the module indicated
29  * by the given location is <em>not</em> empty.
30  */
31 public class IfModule extends AbstractTag {
32   private String JavaDoc location = "";
33
34   public void setLocation(String JavaDoc location) {
35     this.location = location;
36   }
37
38   public String JavaDoc getLocation() {
39     return location;
40   }
41
42   public void writeTag() throws IOException {
43     // nothing to do here
44 }
45
46   public int getStartTagReturnValue() {
47     return (isEdit || getModuleDescriptor(location, null) != null) ?
48         EVAL_BODY_INCLUDE : SKIP_BODY;
49   }
50 }
51
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