1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.datatransfer;
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3 |
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4 | import java.awt.datatransfer.DataFlavor;
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5 | import java.awt.datatransfer.Transferable;
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6 | import java.awt.datatransfer.UnsupportedFlavorException;
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7 | import java.io.Serializable;
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8 | import java.util.ArrayList;
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9 | import java.util.Arrays;
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10 | import java.util.Collection;
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11 | import java.util.Collections;
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12 | import java.util.HashSet;
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13 |
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14 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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15 | import org.openstreetmap.josm.data.osm.RelationMember;
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16 | import org.openstreetmap.josm.data.osm.RelationMemberData;
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17 | import org.openstreetmap.josm.gui.DefaultNameFormatter;
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18 | import org.openstreetmap.josm.gui.datatransfer.data.PrimitiveTransferData;
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19 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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20 |
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21 | /**
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22 | * Transferable objects for {@link RelationMemberData}.
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23 | * @since 9368
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24 | */
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25 | public class RelationMemberTransferable implements Transferable {
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26 |
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27 | /**
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28 | * A wrapper for a collection of {@link RelationMemberData}.
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29 | */
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30 | public static final class Data implements Serializable {
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31 | private static final long serialVersionUID = -8432393711635811029L;
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32 | private final Collection<RelationMemberData> relationMemberDatas;
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33 |
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34 | private Data(Collection<RelationMemberData> primitiveData) {
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35 | CheckParameterUtil.ensureThat(primitiveData instanceof Serializable, "primitiveData must be instanceof Serializable");
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36 | this.relationMemberDatas = primitiveData;
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37 | }
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38 |
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39 | /**
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40 | * Returns the contained {@link RelationMemberData}
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41 | * @return the contained {@link RelationMemberData}
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42 | */
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43 | public Collection<RelationMemberData> getRelationMemberData() {
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44 | return Collections.unmodifiableCollection(relationMemberDatas);
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45 | }
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46 |
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47 | /**
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48 | * Gets the Data for the given list of members.
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49 | * @param members The collection. The order is preserved.
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50 | * @return The data.
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51 | */
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52 | public static Data getData(Collection<RelationMember> members) {
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53 | final Collection<RelationMemberData> r = new ArrayList<>(members.size());
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54 | for (RelationMember member : members) {
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55 | r.add(new RelationMemberData(member.getRole(), member.getType(), member.getUniqueId()));
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56 | }
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57 | return new Data(r);
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58 | }
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59 | }
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60 |
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61 | /**
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62 | * Data flavor for {@link RelationMemberData} which is wrapped in {@link Data}.
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63 | */
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64 | public static final DataFlavor RELATION_MEMBER_DATA = new DataFlavor(Data.class, "Relation member");
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65 | private final Collection<RelationMember> members;
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66 |
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67 | /**
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68 | * Constructs a new {@code RelationMemberTransferable}.
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69 | * @param members list of relation members
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70 | */
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71 | public RelationMemberTransferable(Collection<RelationMember> members) {
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72 | this.members = new ArrayList<>(members);
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73 | }
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74 |
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75 | @Override
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76 | public DataFlavor[] getTransferDataFlavors() {
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77 | return new DataFlavor[]{RELATION_MEMBER_DATA, PrimitiveTransferData.DATA_FLAVOR, DataFlavor.stringFlavor};
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78 | }
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79 |
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80 | @Override
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81 | public boolean isDataFlavorSupported(DataFlavor flavor) {
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82 | return Arrays.asList(getTransferDataFlavors()).contains(flavor);
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83 | }
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84 |
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85 | @Override
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86 | public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException {
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87 | if (DataFlavor.stringFlavor.equals(flavor)) {
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88 | return getStringData();
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89 | } else if (RELATION_MEMBER_DATA.equals(flavor)) {
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90 | return getRelationMemberData();
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91 | } else if (PrimitiveTransferData.DATA_FLAVOR.equals(flavor)) {
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92 | return getPrimitiveData();
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93 | }
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94 | throw new UnsupportedFlavorException(flavor);
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95 | }
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96 |
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97 | private PrimitiveTransferData getPrimitiveData() {
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98 | Collection<OsmPrimitive> primitives = new HashSet<>();
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99 | for (RelationMember member : members) {
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100 | primitives.add(member.getMember());
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101 | }
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102 | return PrimitiveTransferData.getData(primitives);
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103 | }
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104 |
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105 | protected String getStringData() {
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106 | final StringBuilder sb = new StringBuilder();
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107 | for (RelationMember member : members) {
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108 | sb.append(member.getType())
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109 | .append(' ').append(member.getUniqueId())
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110 | .append(' ').append(member.getRole())
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111 | .append(" # ").append(member.getMember().getDisplayName(DefaultNameFormatter.getInstance()))
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112 | .append('\n');
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113 | }
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114 | return sb.toString().replace("\u200E", "").replace("\u200F", "");
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115 | }
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116 |
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117 | protected Data getRelationMemberData() {
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118 | return Data.getData(members);
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119 | }
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120 | }
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