1 /**
2 * This file Copyright (c) 2019 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.templating.elements.attribute;
35
36 import info.magnolia.jcr.RuntimeRepositoryException;
37 import info.magnolia.jcr.util.NodeTypes;
38 import info.magnolia.jcr.util.NodeUtil;
39 import info.magnolia.rendering.template.AreaDefinition;
40 import info.magnolia.templating.elements.AreaElement;
41
42 import java.util.Optional;
43
44 import javax.jcr.Node;
45 import javax.jcr.RepositoryException;
46
47 /**
48 * {@link ElementAttribute} for ""showAddButton" attribute.
49 */
50 public class ShowAddButton implements ElementAttribute<AreaElement> {
51
52 @Override
53 public Optional<String> getValue(AreaElement element) {
54 return Optional.of(shouldShowAddButton(element))
55 .map(Object::toString);
56 }
57
58 private boolean shouldShowAddButton(AreaElement element) {
59 return element.getContent() != null &&
60 !element.getType().equals(AreaDefinition.TYPE_NO_COMPONENT) &&
61 (!element.getType().equals(AreaDefinition.TYPE_SINGLE) || !hasComponents(element.getContent())) && numberOfComponents(element.getContent()) < element.getMaxComponents();
62 }
63
64 boolean hasComponents(Node parent) {
65 try {
66 return NodeUtil.getNodes(parent, NodeTypes.Component.NAME).iterator().hasNext();
67 } catch (RepositoryException e) {
68 throw new RuntimeRepositoryException(e);
69 }
70 }
71
72 private int numberOfComponents(Node parent) {
73 try {
74 return NodeUtil.asList(NodeUtil.getNodes(parent, NodeTypes.Component.NAME)).size();
75 } catch (RepositoryException e) {
76 throw new RuntimeRepositoryException(e);
77 }
78 }
79 }