1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.osm;
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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.HashSet;
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7 | import java.util.Set;
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8 |
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9 | public class DefaultChangesetCacheEvent implements ChangesetCacheEvent {
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10 |
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11 | private final Set<Changeset> added;
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12 | private final Set<Changeset> modified;
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13 | private final Set<Changeset> removed;
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14 | private final ChangesetCache source;
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15 |
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16 | public DefaultChangesetCacheEvent(ChangesetCache source) {
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17 | this.source = source;
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18 | added = new HashSet<>();
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19 | modified = new HashSet<>();
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20 | removed = new HashSet<>();
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21 | }
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22 |
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23 | @Override
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24 | public Collection<Changeset> getAddedChangesets() {
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25 | return Collections.unmodifiableCollection(added);
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26 | }
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27 |
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28 | @Override
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29 | public Collection<Changeset> getRemovedChangesets() {
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30 | return Collections.unmodifiableCollection(removed);
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31 | }
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32 |
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33 | @Override
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34 | public ChangesetCache getSource() {
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35 | return source;
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36 | }
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37 |
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38 | @Override
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39 | public Collection<Changeset> getUpdatedChangesets() {
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40 | return Collections.unmodifiableCollection(modified);
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41 | }
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42 |
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43 | public void rememberAddedChangeset(Changeset cs) {
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44 | if (cs == null) return;
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45 | added.add(cs);
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46 | }
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47 |
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48 | public void rememberUpdatedChangeset(Changeset cs) {
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49 | if (cs == null) return;
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50 | modified.add(cs);
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51 | }
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52 |
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53 | public void rememberRemovedChangeset(Changeset cs) {
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54 | if (cs == null) return;
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55 | removed.add(cs);
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56 | }
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57 |
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58 | public boolean isEmpty() {
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59 | return added.isEmpty() && modified.isEmpty() && removed.isEmpty();
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60 | }
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61 | }
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