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1 /*
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2 CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
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3
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4 Copyright (C) 2011 Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
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5
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6 This program is free software: you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation, either version 3 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 */
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19 package uk.ac.qmul.eecs.ccmi.gui;
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20
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21 import javax.swing.SpinnerNumberModel;
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22
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23 /**
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24 * A SpinnerNumberModel which overrides the default behaviour when selecting items by the keyboard
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25 * up and down arrow keys.
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26 * When the maximum value is reached, a call to getNextValue()
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27 * will return the minimum value, instead of returning null. Likewise,
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28 * when the minimum value is reached, a call to getPreviousValue() will return the maximum value
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29 * instead of returning null.
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30 *
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31 *
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32 */
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33 @SuppressWarnings("serial")
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34 public class LoopSpinnerNumberModel extends SpinnerNumberModel {
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35 public LoopSpinnerNumberModel(int value, int minimum, int maximum){
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36 super(value,minimum,maximum,1);
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37 }
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38
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39 @Override
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40 public Object getNextValue(){
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41 Object nextValue = super.getNextValue();
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42 if(nextValue == null)
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43 return getMinimum();
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44 else
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45 return nextValue;
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46 }
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47
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48 @Override
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49 public Object getPreviousValue(){
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50 Object previousValue = super.getPreviousValue();
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51 if(previousValue == null)
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52 return getMaximum();
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53 else
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54 return previousValue;
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55 }
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56
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57 public Object getValue(){
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58 return super.getValue();
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59 }
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60 }
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