1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.osm.event;
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3 |
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4 | import java.util.Collections;
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5 | import java.util.List;
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6 |
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7 | import org.openstreetmap.josm.data.osm.DataSet;
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8 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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9 | import org.openstreetmap.josm.data.osm.Relation;
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10 |
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11 | /**
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12 | * An event that is triggered if the members of a single relation have changed
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13 | */
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14 | public class RelationMembersChangedEvent extends AbstractDatasetChangedEvent {
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15 |
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16 | private final Relation relation;
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17 |
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18 | /**
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19 | * Constructs a new {@code RelationMembersChangedEvent}.
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20 | * @param dataSet the dataset from which the event comes from
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21 | * @param relation the relation affected by the change
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22 | */
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23 | public RelationMembersChangedEvent(DataSet dataSet, Relation relation) {
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24 | super(dataSet);
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25 | this.relation = relation;
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26 | }
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27 |
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28 | @Override
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29 | public void fire(DataSetListener listener) {
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30 | listener.relationMembersChanged(this);
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31 | }
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32 |
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33 | /**
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34 | * Returns the relation affected by the change.
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35 | * @return the relation affected by the change
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36 | */
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37 | public Relation getRelation() {
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38 | return relation;
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39 | }
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40 |
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41 | @Override
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42 | public List<? extends OsmPrimitive> getPrimitives() {
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43 | return Collections.singletonList(relation);
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44 | }
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45 |
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46 | @Override
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47 | public DatasetEventType getType() {
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48 | return DatasetEventType.RELATION_MEMBERS_CHANGED;
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49 | }
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50 |
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51 | }
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