1 /**
2 * This file Copyright (c) 2013-2018 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.ui.framework.availability;
35
36 import info.magnolia.cms.core.version.VersionManager;
37 import info.magnolia.jcr.util.SessionUtil;
38 import info.magnolia.ui.api.availability.AbstractAvailabilityRule;
39 import info.magnolia.ui.vaadin.integration.jcr.JcrItemId;
40 import info.magnolia.ui.vaadin.integration.jcr.JcrPropertyItemId;
41
42 import javax.inject.Inject;
43 import javax.jcr.Node;
44 import javax.jcr.RepositoryException;
45
46 import org.slf4j.Logger;
47 import org.slf4j.LoggerFactory;
48
49 /**
50 * Checks if versioning is enabled for an item and whether it has versions.
51 */
52 public class HasVersionsRule extends AbstractAvailabilityRule {
53
54 private static final Logger log = LoggerFactory.getLogger(HasVersionsRule.class);
55
56 private final VersionManager versionManager;
57
58 @Inject
59 public HasVersionsRule(VersionManager versionManager) {
60 this.versionManager = versionManager;
61 }
62
63 @Override
64 protected boolean isAvailableForItem(Object itemId) {
65 if (itemId instanceof JcrItemId && !(itemId instanceof JcrPropertyItemId)) {
66 JcrItemId jcrItemId = (JcrItemId) itemId;
67 Node node = SessionUtil.getNodeByIdentifier(jcrItemId.getWorkspace(), jcrItemId.getUuid());
68 if (node != null) {
69 try {
70 return versionManager.hasVersion(node);
71 } catch (RepositoryException e) {
72 log.debug("Item [{}] doesn't have versions.", new Object[] {node, e});
73 return false;
74 }
75 }
76 }
77
78 return false;
79 }
80
81 }