/*
* This file is part of jHaushalt.
* jHaushalt is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* jHaushalt 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with jHaushalt; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* (C)opyright 2002-2010 Dr. Lars H. Hahn
*/
package haushalt.gui;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.PlainDocument;
/**
* Textfeld um Prozent-Werte zu editieren.
* Bei der Eingabe werden keine Buchstaben akzeptiert.
*
* @author Dr. Lars H. Hahn
* @version 2.5.3/2008.03.19
* @since 2.5
*/
/*
* 2008.03.19 BugFix: getValue liefert jetzt Integer-Werte
* 2007.02.20 Erste Version (2.5)
*/
public class ProzentField extends DeleteableTextField {
private static final long serialVersionUID = 1L;
public ProzentField(final String prozent) {
super(prozent, 4);
}
public Integer getValue() {
if (getText().equals("")) {
return 0;
}
final int wert = Integer.parseInt(getText());
if (wert > 100) {
return 100;
}
return wert;
}
@Override
protected Document createDefaultModel() {
return new ProzentDocument();
}
private static class ProzentDocument extends PlainDocument {
private static final long serialVersionUID = 1L;
@Override
public void insertString(final int offs, final String str, final AttributeSet a) throws BadLocationException {
final char[] source = str.toCharArray();
final int anzChar = source.length;
final char[] result = new char[anzChar];
int j = 0;
for (int i = 0; i < anzChar; i++) {
if ((offs + i < 3) && Character.isDigit(source[i])) {
result[j++] = source[i];
}
}
super.insertString(offs, new String(result, 0, j), a);
}
}
}