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.dialog;
35
36 import info.magnolia.ui.api.action.ActionDefinition;
37 import info.magnolia.ui.availability.AvailabilityChecker;
38 import info.magnolia.ui.ValueContext;
39
40 import java.util.ArrayList;
41 import java.util.Optional;
42
43 import javax.inject.Inject;
44
45 import com.vaadin.ui.Button;
46
47 /**
48 * Button control typically found in the action area
49 * of dialogs and editor views. Tracks the value currently
50 * set in {@link ValueContext value context} and updates own
51 * availability accordingly.
52 *
53 * Executes a pre-configured action upon click.
54 */
55 public class ActionButton<T> extends Button {
56
57 @Inject
58 public ActionButton(AvailabilityChecker<T> availabilityChecker,
59 ValueContext<T> valueContext,
60 ActionExecution<T> execution) {
61 ActionDefinition actionDefinition = execution.getDefinition();
62 addClickListener(e -> execution.execute());
63
64 valueContext.observe(items ->
65 setEnabled(availabilityChecker.isAvailable(actionDefinition.getAvailability(), new ArrayList<>(items))));
66
67 setCaption(Optional.ofNullable(actionDefinition.getLabel()).orElse(actionDefinition.getName()));
68 addStyleNames(actionDefinition.getName());
69 }
70 }