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1 /*
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2 Cross-Modal DAW Prototype - Prototype of a simple Cross-Modal Digital Audio Workstation.
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3
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4 Copyright (C) 2015 Queen Mary University of London (http://depic.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.depic.patterns;
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20
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21 import java.util.EventObject;
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22
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23 /**
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24 *
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25 * An event in a sequence. Objects of this type are passed to the listeners of a sequence when it get changed.
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26 *
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27 */
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28 public class SequenceEvent extends EventObject{
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29 private static final long serialVersionUID = 1L;
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30
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31 /**
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32 *
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33 * Type of events in a sequence
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34 *
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35 */
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36 public enum What {
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37 VALUE_ADDED,
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38 VALUE_REMOVED,
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39 VALUE_CHANGED,
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40 END_CHANGED,
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41 BEGIN_CHANGED
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42 };
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43 private Sequence.Value value;
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44 private SequenceEvent.What what;
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45
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46 public SequenceEvent(Sequence seq,Sequence.Value val, What what){
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47 super(seq);
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48 this.value = val;
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49 this.what = what;
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50 }
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51
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52 public What getWhat(){
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53 return what;
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54 }
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55
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56 @Override
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57 public Sequence getSource(){
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58 return (Sequence)super.getSource();
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59 }
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60
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61 /**
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62 * If the event concerns a particular value, it returns a reference to that value.
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63 * If the event concerns the whole sequence it returns {@code null}.
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64 *
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65 * @return a reference to the value, or {@code null} if the event concerns no value
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66 */
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67 public Sequence.Value getValue(){
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68 return value;
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69 }
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70 } |
