?? integerdocument.java
字號:
/* ===================================================
* JCommon : a free general purpose Java class library
* ===================================================
*
* Project Info: http://www.jfree.org/jcommon/index.html
* Project Lead: David Gilbert (david.gilbert@object-refinery.com);
*
* (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* --------------------
* IntegerDocument.java
* --------------------
* (C) Copyright 2000-2003, by Andrzej Porebski.
*
* Original Author: Andrzej Porebski;
* Contributor(s): -;
*
* $Id: IntegerDocument.java,v 1.3 2003/06/12 16:54:40 mungady Exp $
*
* Changes (from 7-Nov-2001)
* -------------------------
* 07-Nov-2001 : Added to com.jrefinery.ui package (DG);
* 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/
package org.jfree.ui;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;
/**
* A document for editing integers.
*
* @author Andrzej Porebski
*/
public class IntegerDocument extends PlainDocument {
/**
* Inserts a string.
*
* @param i i.
* @param s s.
* @param attributes the attributes.
*
* @throws BadLocationException ??
*/
public void insertString(int i, String s, AttributeSet attributes)
throws BadLocationException {
super.insertString(i, s, attributes);
if (s != null && (!s.equals("-") || i != 0 || s.length() >= 2)) {
try {
Integer.parseInt(getText(0, getLength()));
}
catch (NumberFormatException e) {
remove(i, s.length());
}
}
}
}
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