f@0: /*  
f@0:  CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
f@0:   
f@0:  Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
f@0: 
f@0:  This program is free software: you can redistribute it and/or modify
f@0:  it under the terms of the GNU General Public License as published by
f@0:  the Free Software Foundation, either version 3 of the License, or
f@0:  (at your option) any later version.
f@0: 
f@0:  This program is distributed in the hope that it will be useful,
f@0:  but WITHOUT ANY WARRANTY; without even the implied warranty of
f@0:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
f@0:  GNU General Public License for more details.
f@0: 
f@0:  You should have received a copy of the GNU General Public License
f@0:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
f@0: */
f@0: package uk.ac.qmul.eecs.ccmi.gui;
f@0: 
f@0: import javax.swing.SpinnerNumberModel;
f@0: 
f@0: /**
f@0:  * A SpinnerNumberModel which overrides the default behaviour when selecting items by the keyboard
f@0:  * up and down arrow keys.
f@0:  * When the maximum value is reached, a call to getNextValue() 
f@0:  * will return the minimum value, instead of returning null. Likewise,
f@0:  * when the minimum value is reached, a call to getPreviousValue() will return the maximum value 
f@0:  * instead of returning null. 
f@0:  * 
f@0:  *
f@0:  */
f@0: @SuppressWarnings("serial")
f@0: public class LoopSpinnerNumberModel extends SpinnerNumberModel {
f@0: 	public LoopSpinnerNumberModel(int value, int minimum, int maximum){
f@0: 		super(value,minimum,maximum,1);
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public Object getNextValue(){
f@0: 		Object nextValue = super.getNextValue();
f@0: 		if(nextValue == null)
f@0: 			return getMinimum();
f@0: 		else
f@0: 			return nextValue;
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public Object getPreviousValue(){
f@0: 		Object previousValue = super.getPreviousValue();
f@0: 		if(previousValue == null)
f@0: 			return getMaximum();
f@0: 		else 
f@0: 			return previousValue;
f@0: 	}
f@0: 	
f@0: 	public Object getValue(){
f@0: 		return super.getValue();
f@0: 	}
f@0: }