|
/*
*
* Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
import javax.swing.JFrame;
import javax.swing.JSpinner;
import javax.swing.SpinnerListModel;
import javax.swing.SpinnerModel;
class CyclingSpinnerListModel extends SpinnerListModel {
Object firstValue, lastValue;
SpinnerModel linkedModel = null;
public CyclingSpinnerListModel(Object[] values) {
super(values);
firstValue = values[0];
lastValue = values[values.length - 1];
}
public void setLinkedModel(SpinnerModel linkedModel) {
this.linkedModel = linkedModel;
}
public Object getNextValue() {
Object value = super.getNextValue();
if (value == null) {
value = firstValue;
if (linkedModel != null) {
linkedModel.setValue(linkedModel.getNextValue());
}
}
return value;
}
public Object getPreviousValue() {
Object value = super.getPreviousValue();
if (value == null) {
value = lastValue;
if (linkedModel != null) {
linkedModel.setValue(linkedModel.getPreviousValue());
}
}
return value;
}
}
public class CyclingSpinnerListModelDemo {
public static void main(String[] a) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JSpinner spinner = new JSpinner(new CyclingSpinnerListModel(new String[]{"A","B","C"}));
frame.add(spinner);
frame.setSize(300, 200);
frame.setVisible(true);
}
}
|
