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1   /**
2    * This file Copyright (c) 2017-2018 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.workbench.tree.drop;
35  
36  import info.magnolia.jcr.util.NodeUtil;
37  import info.magnolia.ui.vaadin.integration.contentconnector.ContentConnector;
38  
39  import javax.inject.Inject;
40  import javax.jcr.Item;
41  import javax.jcr.Node;
42  import javax.jcr.RepositoryException;
43  
44  import org.apache.commons.lang3.StringUtils;
45  import org.slf4j.Logger;
46  import org.slf4j.LoggerFactory;
47  
48  /**
49   * Common JCR DropConstraint implementation which takes a simple primary node-type and disallows nesting for it.
50   *
51   * @deprecated since 6.0. Use new framework and {@link info.magnolia.ui.contentapp.drop.JcrDropConstraint#} instead.
52   */
53  @Deprecated
54  public class JcrContentDropConstraint extends JcrDropConstraint {
55  
56      private static final Logger log = LoggerFactory.getLogger(JcrContentDropConstraint.class);
57  
58      private final String nodeType;
59  
60      @Inject
61      public JcrContentDropConstraint(ContentConnector contentConnector, String nodeType) {
62          super(contentConnector);
63          this.nodeType = nodeType;
64      }
65  
66      /**
67       * Backward compatibility constructor.
68       *
69       * @deprecated since 5.5.5, use {@link JcrContentDropConstraint#JcrContentDropConstraint(ContentConnector, String)} instead.
70       */
71      @Deprecated
72      public JcrContentDropConstraint() {
73          this(null);
74      }
75  
76      /**
77       * Backward compatibility constructor.
78       *
79       * @deprecated since 5.5.5, use {@link JcrContentDropConstraint#JcrContentDropConstraint(ContentConnector, String)} instead.
80       */
81      @Deprecated
82      public JcrContentDropConstraint(String nodeType) {
83          this(null, nodeType);
84      }
85  
86      @Override
87      protected boolean allowedAsChild(Item source, Item target) {
88          boolean movable = super.allowedAsChild(source, target) && source.isNode();
89          if (movable) {
90              try {
91                  Node sourceNode = (Node) source;
92                  Node targetNode = (Node) target;
93                  // If both nodes are of specific nodeType, return false.
94                  if (StringUtils.isNotBlank(nodeType) && NodeUtil.isNodeType(sourceNode, nodeType) && NodeUtil.isNodeType(targetNode, nodeType)) {
95                      log.debug("Could not move a node type '{}' under a node type '{}'", sourceNode.getPrimaryNodeType().getName(), nodeType);
96                      return false;
97                  }
98              } catch (RepositoryException e) {
99                  log.warn("Could not check if child is allowed. ", e);
100             }
101         }
102 
103         return movable;
104     }
105 }