1 /**
2 * This file Copyright (c) 2003-2011 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.cms.taglibs;
35
36 import info.magnolia.cms.core.Content;
37 import info.magnolia.cms.core.NodeData;
38 import info.magnolia.cms.i18n.I18nContentSupportFactory;
39
40 import org.apache.commons.lang.StringUtils;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
43
44
45 /**
46 * This is exactly the opposite of the ifNotEmpty tag.
47 * @jsp.tag name="ifEmpty" body-content="JSP"
48 *
49 * @author Marcel Salathe
50 * @author Fabrizio Giustina
51 * @version $Revision $ ($Author $)
52 */
53 public class IfEmpty extends BaseConditionalContentTag {
54 private static final Logger log = LoggerFactory.getLogger(IfEmpty.class);
55
56 private String nodeDataName = StringUtils.EMPTY;
57
58 /**
59 * @deprecated
60 * @jsp.attribute required="false" rtexprvalue="true"
61 */
62 public void setAtomName(String name) {
63 this.setNodeDataName(name);
64 }
65
66 /**
67 * @param name , antom name to evaluate
68 * @jsp.attribute required="false" rtexprvalue="true"
69 */
70 public void setNodeDataName(String name) {
71 this.nodeDataName = name;
72 }
73
74 /**
75 * @deprecated use the contentNodeName attribute instead.
76 * @jsp.attribute required="false" rtexprvalue="true"
77 */
78 public void setContainerName(String name) {
79 this.setContentNodeName(name);
80 }
81
82 /**
83 * @deprecated use the contentNodeCollectionName attribute instead.
84 * @jsp.attribute required="false" rtexprvalue="true"
85 */
86 public void setContainerListName(String name) {
87 this.setContentNodeCollectionName(name);
88 }
89
90 protected boolean condition() {
91 Content node = this.getFirstMatchingNode();
92
93 if (node == null) {
94 return true;
95 }
96
97 if (StringUtils.isNotEmpty(this.getContentNodeCollectionName())) {
98 return !node.hasChildren();
99 }
100
101 // checking for node existence
102 if(StringUtils.isEmpty(this.nodeDataName) && !node.hasChildren()){
103 return true;
104 }
105
106 NodeData nodeData = I18nContentSupportFactory.getI18nSupport().getNodeData(node, this.nodeDataName);
107
108 if ((nodeData == null) || !nodeData.isExist() || StringUtils.isEmpty(nodeData.getString())) {
109 return true;
110 }
111
112 return false;
113 }
114
115 }