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1   /**
2    * This file Copyright (c) 2021 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.dam.app.availability;
35  
36  import info.magnolia.dam.api.AssetProvider;
37  import info.magnolia.dam.api.AssetProviderRegistry;
38  import info.magnolia.dam.jcr.AbstractJcrItem;
39  import info.magnolia.dam.jcr.DamConstants;
40  import info.magnolia.objectfactory.ComponentProvider;
41  import info.magnolia.ui.api.availability.AvailabilityDefinition;
42  import info.magnolia.ui.availability.rule.AbstractAvailabilityRule;
43  import info.magnolia.ui.availability.rule.JcrWritePermissionRule;
44  import info.magnolia.ui.availability.rule.JcrWritePermissionRuleDefinition;
45  
46  import java.util.Collection;
47  import java.util.Collections;
48  
49  import javax.inject.Inject;
50  
51  /**
52   * A class which checks whether user has write permission to JCR asset.
53   */
54  public class JcrAssetWritePermissionRule extends AbstractAvailabilityRule<AbstractJcrItem, JcrAssetWritePermissionRule.Definition> {
55  
56      private final JcrWritePermissionRule jcrWritePermissionRule;
57      private final AssetProvider assetProvider;
58  
59      @Inject
60      JcrAssetWritePermissionRule(AvailabilityDefinition availabilityDefinition, Definition ruleDefinition, ComponentProvider componentProvider, AssetProviderRegistry assetProviderRegistry) {
61          super(availabilityDefinition, ruleDefinition);
62          this.jcrWritePermissionRule = componentProvider.newInstance(JcrWritePermissionRule.class, availabilityDefinition, ruleDefinition);
63          this.assetProvider = assetProviderRegistry.getProviderById(DamConstants.DEFAULT_JCR_PROVIDER_ID);;
64      }
65  
66      @Override
67      public boolean isAvailable(Collection<?> items) {
68          items = items.isEmpty() ? Collections.singleton(assetProvider.getRootFolder()) : items;
69          return super.isAvailable(items);
70      }
71  
72      @Override
73      protected boolean isAvailableFor(AbstractJcrItem item) {
74          return jcrWritePermissionRule.isAvailable(Collections.singleton(item.getNode()));
75      }
76  
77      /**
78       * Definition of a {@link info.magnolia.dam.app.availability.JcrAssetWritePermissionRule}.
79       */
80      public static class Definition extends JcrWritePermissionRuleDefinition {
81          public Definition() {
82              this.setImplementationClass(JcrAssetWritePermissionRule.class);
83          }
84      }
85  
86  }