1 /**
2 * This file Copyright (c) 2012-2018 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.event;
35
36 import info.magnolia.event.Event;
37 import info.magnolia.event.EventHandler;
38
39 import java.util.Set;
40
41 /**
42 * This event is fired when an item is selected (i.e. a row in the data grid within the workbench
43 * representing either a {@link javax.jcr.Node} or a {@link javax.jcr.Property}).
44 */
45 public class SelectionChangedEvent implements Event<SelectionChangedEvent.Handler> {
46
47 /**
48 * Handles {@link SelectionChangedEvent} events.
49 */
50 public interface Handler extends EventHandler {
51
52 void onSelectionChanged(SelectionChangedEvent event);
53 }
54
55 private final Set<Object> itemsIds;
56
57 public SelectionChangedEvent(Set<Object> itemIds) {
58 this.itemsIds = itemIds;
59 }
60
61
62 public Object getFirstItemId() {
63 if (itemsIds != null && !itemsIds.isEmpty()) {
64 return itemsIds.iterator().next();
65 }
66 return null;
67 }
68
69 public Set<Object> getItemIds() {
70 return itemsIds;
71 }
72
73 @Override
74 public void dispatch(Handler handler) {
75 handler.onSelectionChanged(this);
76 }
77 }