1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.command;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.util.Collection;
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7 | import java.util.List;
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8 | import java.util.Objects;
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9 |
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10 | import org.openstreetmap.josm.data.osm.DataSet;
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11 | import org.openstreetmap.josm.data.osm.DefaultNameFormatter;
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12 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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13 | import org.openstreetmap.josm.data.osm.Relation;
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14 | import org.openstreetmap.josm.data.osm.RelationMember;
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15 |
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16 | /**
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17 | * Command that changes the members of a relation.
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18 | * The same can be done with ChangeCommand, but this is more efficient.
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19 | * @author Gerd Petermann
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20 | * @since 17199
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21 | *
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22 | */
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23 | public class ChangeMembersCommand extends Command {
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24 |
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25 | private final Relation relation;
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26 | private final List<RelationMember> cmdMembers;
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27 |
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28 | /**
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29 | * Constructs a new {@code ChangeMembersCommand} in the context of a given data set.
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30 | * @param data the data set. Must not be null.
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31 | * @param relation the relation
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32 | * @param newMembers the new member list, must not be empty
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33 | */
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34 | public ChangeMembersCommand(DataSet data, Relation relation, List<RelationMember> newMembers) {
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35 | super(data);
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36 | this.relation = Objects.requireNonNull(relation, "relation");
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37 | this.cmdMembers = Objects.requireNonNull(newMembers, "newMembers");
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38 | }
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39 |
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40 | /**
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41 | * Constructs a new {@code ChangeMembersCommand} in the context of {@code r} data set.
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42 | * @param relation the relation. It must belong to a data set
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43 | * @param newMembers the new member list, must not be empty
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44 | */
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45 | public ChangeMembersCommand(Relation relation, List<RelationMember> newMembers) {
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46 | this(relation.getDataSet(), relation, newMembers);
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47 | }
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48 |
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49 | @Override
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50 | public boolean executeCommand() {
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51 | super.executeCommand();
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52 | relation.setMembers(cmdMembers);
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53 | relation.setModified(true);
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54 | return true;
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55 |
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56 | }
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57 |
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58 | @Override
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59 | public String getDescriptionText() {
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60 | return tr("Change members of {0}", relation.getDisplayName(DefaultNameFormatter.getInstance()));
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61 | }
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62 |
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63 | @Override
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64 | public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted,
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65 | Collection<OsmPrimitive> added) {
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66 | modified.add(relation);
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67 | }
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68 |
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69 | @Override
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70 | public int hashCode() {
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71 | return Objects.hash(super.hashCode(), relation, cmdMembers);
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72 | }
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73 |
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74 | @Override
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75 | public boolean equals(Object obj) {
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76 | if (this == obj) return true;
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77 | if (obj == null || getClass() != obj.getClass()) return false;
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78 | if (!super.equals(obj)) return false;
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79 | ChangeMembersCommand that = (ChangeMembersCommand) obj;
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80 | return Objects.equals(relation, that.relation) &&
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81 | Objects.equals(cmdMembers, that.cmdMembers);
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82 | }
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83 |
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84 | }
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