1 /**
2 * This file Copyright (c) 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.form.field.converter;
35
36 import java.util.Locale;
37
38 /**
39 * Converts field values between a model and a presentation type.
40 *
41 * @param <Model> the model type
42 * @param <Presentation> the presentation type
43 */
44 public interface FieldValueConverter<Presentation, Model> {
45
46 Model convertToModel(Presentation value, Class<? extends Model> targetType, Locale locale);
47
48 Presentation convertToPresentation(Model value, Class<? extends Presentation> targetType, Locale locale);
49
50 /**
51 * Wrapper that delegates conversion to given{@link #delegate}.
52 *
53 * @param <Presentation> the model type
54 * @param <Model> the presentation type
55 */
56 class Wrapper<Presentation, Model> implements FieldValueConverter<Presentation, Model> {
57
58 private final FieldValueConverter<Presentation, Model> delegate;
59
60 public Wrapper(FieldValueConverter<Presentation, Model> delegate) {
61 this.delegate = delegate;
62 }
63
64 @Override
65 public Model convertToModel(Presentation value, Class<? extends Model> targetType, Locale locale) {
66 return delegate.convertToModel(value, targetType, locale);
67 }
68
69 @Override
70 public Presentation convertToPresentation(Model value, Class<? extends Presentation> targetType, Locale locale) {
71 return this.delegate.convertToPresentation(value, targetType, locale);
72 }
73 }
74 }