1 /**
2 * This file Copyright (c) 2015 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.external.app.action.availability;
35
36 import info.magnolia.dam.api.AssetProvider;
37 import info.magnolia.dam.api.AssetProviderRegistry;
38 import info.magnolia.dam.api.Item;
39 import info.magnolia.dam.api.ItemKey;
40 import info.magnolia.ui.api.availability.AbstractAvailabilityRule;
41
42 import javax.inject.Inject;
43
44 import org.slf4j.Logger;
45 import org.slf4j.LoggerFactory;
46
47 /**
48 * A class which checks whether an item is an Asset or not.
49 */
50 public class IsAssetRule extends AbstractAvailabilityRule {
51
52 private static final Logger log = LoggerFactory.getLogger(IsAssetRule.class);
53
54 private final AssetProviderRegistry assetProviderRegistry;
55
56 @Inject
57 public IsAssetRule(AssetProviderRegistry assetProviderRegistry) {
58 this.assetProviderRegistry = assetProviderRegistry;
59 }
60
61 @Override
62 protected boolean isAvailableForItem(Object itemId) {
63 if (itemId == null || !(itemId instanceof ItemKey)) {
64 return false;
65 }
66 final ItemKey itemKey = (ItemKey) itemId;
67 final AssetProvider assetProvider = assetProviderRegistry.getProviderById(itemKey.getProviderId());
68 try {
69 if (assetProvider != null) {
70 final Item item = assetProvider.getItem(itemKey);
71 return item.isAsset();
72 }
73 } catch (AssetProvider.AssetNotFoundException e) {
74 log.error("Failed to retrieve item with given id: " + e.getMessage(), e);
75 } catch (AssetProvider.IllegalItemKeyException e) {
76 log.error("Failed to handle item id: " + e.getMessage(), e);
77 }
78 return false;
79 }
80
81 }