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.Collection;
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5 | import java.util.Collections;
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6 | import java.util.List;
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7 |
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8 | import org.openstreetmap.josm.data.osm.DataSet;
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9 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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10 |
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11 | /**
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12 | * A combined data change event. It consists of multiple dataset events.
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13 | */
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14 | public class DataChangedEvent extends AbstractDatasetChangedEvent {
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15 |
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16 | private final List<AbstractDatasetChangedEvent> events;
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17 |
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18 | /**
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19 | * Constructs a new {@code DataChangedEvent}
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20 | * @param dataSet the dataset from which the event comes from
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21 | * @param events list of change events
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22 | */
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23 | public DataChangedEvent(DataSet dataSet, List<AbstractDatasetChangedEvent> events) {
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24 | super(dataSet);
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25 | this.events = events;
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26 | }
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27 |
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28 | /**
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29 | * Constructs a new {@code DataChangedEvent}
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30 | * @param dataSet data set. Can be null
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31 | */
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32 | public DataChangedEvent(DataSet dataSet) {
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33 | this(dataSet, null);
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34 | }
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35 |
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36 | @Override
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37 | public void fire(DataSetListener listener) {
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38 | listener.dataChanged(this);
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39 | }
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40 |
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41 | @Override
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42 | public Collection<OsmPrimitive> getPrimitives() {
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43 | return dataSet == null ? Collections.emptyList() : dataSet.allPrimitives();
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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.DATA_CHANGED;
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49 | }
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50 |
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51 | /**
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52 | * Returns list of events that caused this DataChangedEvent.
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53 | * @return List of events that caused this DataChangedEvent. Might be null
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54 | */
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55 | public List<AbstractDatasetChangedEvent> getEvents() {
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56 | return events;
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57 | }
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58 | }
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