1 /**
2 * This file Copyright (c) 2016-2018 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.editor;
35
36 import java.math.BigDecimal;
37 import java.text.NumberFormat;
38 import java.util.Locale;
39
40 import com.vaadin.v7.data.util.converter.Converter;
41 import com.vaadin.v7.data.util.converter.DefaultConverterFactory;
42 import com.vaadin.v7.data.util.converter.StringToBigDecimalConverter;
43 import com.vaadin.v7.data.util.converter.StringToDoubleConverter;
44 import com.vaadin.v7.data.util.converter.StringToFloatConverter;
45
46 /**
47 * Disable rounding for Vaadin's default string-to-floating-point converters.
48 *
49 * @deprecated since 6.0 - only exists due to Vaadin 7 quirkiness in operating the double/float to string conversion
50 */
51 @Deprecated
52 public class NonRoundingConverterFactory extends DefaultConverterFactory {
53 @Override
54 protected Converter<String, ?> createStringConverter(Class<?> sourceType) {
55
56 if (Double.class.isAssignableFrom(sourceType)) {
57 return new StringToDoubleConverter() {
58 @Override
59 protected NumberFormat getFormat(Locale locale) {
60 return amendMaximumFractionDigits(super.getFormat(locale));
61 }
62 };
63
64 } else if (Float.class.isAssignableFrom(sourceType)) {
65 return new StringToFloatConverter() {
66 @Override
67 protected NumberFormat getFormat(Locale locale) {
68 return amendMaximumFractionDigits(super.getFormat(locale));
69 }
70 };
71
72 } else if (BigDecimal.class.isAssignableFrom(sourceType)) {
73 return new StringToBigDecimalConverter() {
74 @Override
75 protected NumberFormat getFormat(Locale locale) {
76 return amendMaximumFractionDigits(super.getFormat(locale));
77 }
78 };
79 }
80
81 return super.createStringConverter(sourceType);
82 }
83
84 private NumberFormat amendMaximumFractionDigits(NumberFormat format) {
85 // default NumberFormat instances have maximumFractionDigits = 3
86 format.setMaximumFractionDigits(Integer.MAX_VALUE);
87 return format;
88 }
89 }