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.field;
35
36 import info.magnolia.objectfactory.ComponentProvider;
37
38 import java.math.BigDecimal;
39
40 import org.apache.commons.beanutils.ConvertUtilsBean;
41 import org.apache.commons.beanutils.converters.BigDecimalConverter;
42
43 import com.vaadin.data.Binder;
44
45 /**
46 * Simple extension of a default field binder implementation
47 * which applies text field binding bug workaround.
48 */
49 public class TextFieldBinder<T> extends FieldBinder.Default<T> {
50
51 private ConvertUtilsBean beanUtils;
52
53 public TextFieldBinder(ComponentProvider componentProvider) {
54 super(componentProvider);
55 beanUtils = new ConvertUtilsBean();
56 // BigDecimalConverter does not support empty string
57 beanUtils.register(new BigDecimalConverter("0"), BigDecimal.class);
58 }
59
60 @Override
61 public <BT> Binder.BindingBuilder<BT, T> configureBinding(FieldDefinition<T> definition, Binder.BindingBuilder<BT, T> source) {
62 // TextField doesn't support null value - see https://github.com/vaadin/framework/issues/8664#issuecomment-327480600
63 return super.configureBinding(definition, source).withNullRepresentation(getDefaultNullRepresentation(definition));
64 }
65
66 protected T getDefaultNullRepresentation(FieldDefinition<T> definition) {
67 return (T) beanUtils.convert("", definition.getType());
68 }
69 }