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