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/jEdit/tags/jedit-4-5-pre1/org/gjt/sp/jedit/gui/NumericTextField.java

#
Java | 59 lines | 28 code | 5 blank | 26 comment | 6 complexity | 8fed3182380f873f711e319a7104dec0 MD5 | raw file
 1/*
 2 * NumericTextField.java - A TextField that accepts only numeric values
 3 * :tabSize=8:indentSize=8:noTabs=false:
 4 * :folding=explicit:collapseFolds=1:
 5 *
 6 * Copyright (C) 2008 Matthieu Casanova
 7 *
 8 * This program is free software; you can redistribute it and/or
 9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
21 */
22package org.gjt.sp.jedit.gui;
23
24import javax.swing.*;
25import java.awt.event.KeyEvent;
26
27/**
28 * @author Matthieu Casanova
29 * @version $Id: KeyEventWorkaround.java 12889 2008-06-23 20:14:00Z kpouer $
30 * @since jEdit 4.3pre15
31 */
32public class NumericTextField extends JTextField
33{
34	private final boolean positiveOnly;
35
36	public NumericTextField(String text)
37	{
38		this(text, false);
39	}
40
41	public NumericTextField(String text, boolean positiveOnly)
42	{
43		super(text);
44		this.positiveOnly = positiveOnly;
45	}
46
47	@Override
48	protected void processKeyEvent(KeyEvent e)
49	{
50		if (e.getID() == KeyEvent.KEY_TYPED)
51		{
52			if (!Character.isDigit(e.getKeyChar()) && !(!positiveOnly && e.getKeyChar() == '-'))
53			{
54				e.consume();
55			}
56		}
57		super.processKeyEvent(e);
58	}
59}