1 /*
2 * Copyright (c) 2003-2008 by Cosylab d. d.
3 *
4 * This file is part of CosyBeans-Common.
5 *
6 * CosyBeans-Common is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * CosyBeans-Common is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with CosyBeans-Common. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 package com.cosylab.gui.components.numberfield;
21
22 import com.cosylab.util.StringUtilities;
23
24
25 /**
26 * This is the implementation of the <code>AbstractNumberDocument</code> class
27 * implementing the floating point parser.
28 *
29 * @author <a href="mailto:ales.pucelj@cosylab.com">Ales Pucelj</a>
30 * @version $id$
31 */
32 public class DoubleDocument extends AbstractNumberDocument
33 {
34 private static final long serialVersionUID = 1L;
35
36 /**
37 * Constructor for DoubleDocument.
38 */
39 public DoubleDocument()
40 {
41 super();
42 }
43
44 /**
45 * Parses the string as a floating point value.
46 *
47 * @param s String
48 *
49 * @return Number
50 *
51 * @see AbstractNumberDocument#parseNumber(String)
52 */
53 protected Number parseNumber(String s)
54 {
55 if (s==null || s.length()<1) {
56 return null;
57 }
58 double newValue;
59
60 newValue = StringUtilities.parseDouble(s);
61
62 if (Double.isInfinite(Math.abs(newValue))) {
63 return null;
64 }
65
66 if (Double.isNaN(newValue)) {
67 return null;
68 }
69
70 return new Double(newValue);
71 }
72 }
73
74 /* __oOo__ */