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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.ui.contentapp.action.clipboard;
35  
36  import info.magnolia.ui.api.availability.AvailabilityDefinition;
37  import info.magnolia.ui.availability.rule.AbstractAvailabilityRule;
38  import info.magnolia.ui.framework.ContentClipboard;
39  
40  import java.util.Collection;
41  
42  import javax.inject.Inject;
43  
44  /**
45   * {@link info.magnolia.ui.api.availability.AvailabilityRule} which delegates to {@link info.magnolia.ui.framework.ContentClipboard#canPasteInto(Object)}.
46   */
47  public class CanPasteContentRule<T> extends AbstractAvailabilityRule<T, CanPasteContentRuleDefinition> {
48  
49      private final ContentClipboard<T> contentClipboard;
50  
51      @Inject
52      public CanPasteContentRule(AvailabilityDefinition availabilityDefinition, CanPasteContentRuleDefinition ruleDefinition, ContentClipboard<T> contentClipboard) {
53          super(availabilityDefinition, ruleDefinition);
54          this.contentClipboard = contentClipboard;
55      }
56  
57      @Override
58      public boolean isAvailable(Collection<?> itemIds) {
59          return !this.contentClipboard.isEmpty() && super.isAvailable(itemIds);
60      }
61  
62      @Override
63      protected boolean isAvailableFor(T item) {
64          return contentClipboard.canPasteInto(item);
65      }
66  }