1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.preferences;
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3 |
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4 | import java.util.ArrayList;
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5 | import java.util.Collections;
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6 | import java.util.Iterator;
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7 | import java.util.LinkedHashMap;
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8 | import java.util.List;
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9 | import java.util.Map;
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10 | import java.util.Map.Entry;
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11 | import java.util.Objects;
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12 |
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13 | /**
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14 | * Setting containing a {@link List} of {@link Map}s of {@link String} values.
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15 | * @since 9759
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16 | */
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17 | public class MapListSetting extends AbstractSetting<List<Map<String, String>>> {
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18 |
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19 | /**
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20 | * Constructs a new {@code MapListSetting} with the given value
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21 | * @param value The setting value
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22 | */
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23 | public MapListSetting(List<Map<String, String>> value) {
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24 | super(value);
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25 | consistencyTest();
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26 | }
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27 |
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28 | @Override
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29 | public boolean equalVal(List<Map<String, String>> otherVal) {
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30 | if (value == null)
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31 | return otherVal == null;
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32 | if (otherVal == null)
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33 | return false;
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34 | if (value.size() != otherVal.size())
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35 | return false;
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36 | Iterator<Map<String, String>> itA = value.iterator();
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37 | Iterator<Map<String, String>> itB = otherVal.iterator();
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38 | while (itA.hasNext()) {
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39 | if (!equalMap(itA.next(), itB.next()))
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40 | return false;
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41 | }
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42 | return true;
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43 | }
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44 |
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45 | private static boolean equalMap(Map<String, String> a, Map<String, String> b) {
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46 | if (a == null)
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47 | return b == null;
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48 | if (b == null)
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49 | return false;
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50 | if (a.size() != b.size())
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51 | return false;
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52 | for (Entry<String, String> e : a.entrySet()) {
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53 | if (!Objects.equals(e.getValue(), b.get(e.getKey())))
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54 | return false;
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55 | }
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56 | return true;
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57 | }
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58 |
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59 | @Override
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60 | public MapListSetting copy() {
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61 | if (value == null)
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62 | return new MapListSetting(null);
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63 | List<Map<String, String>> copy = new ArrayList<>(value.size());
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64 | for (Map<String, String> map : value) {
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65 | Map<String, String> mapCopy = new LinkedHashMap<>(map);
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66 | copy.add(Collections.unmodifiableMap(mapCopy));
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67 | }
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68 | return new MapListSetting(Collections.unmodifiableList(copy));
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69 | }
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70 |
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71 | private void consistencyTest() {
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72 | if (value == null)
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73 | return;
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74 | if (value.contains(null))
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75 | throw new RuntimeException("Error: Null as list element in preference setting");
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76 | for (Map<String, String> map : value) {
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77 | if (map.keySet().contains(null))
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78 | throw new RuntimeException("Error: Null as map key in preference setting");
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79 | if (map.values().contains(null))
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80 | throw new RuntimeException("Error: Null as map value in preference setting");
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81 | }
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82 | }
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83 |
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84 | @Override
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85 | public void visit(SettingVisitor visitor) {
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86 | visitor.visit(this);
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87 | }
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88 |
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89 | @Override
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90 | public MapListSetting getNullInstance() {
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91 | return new MapListSetting(null);
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92 | }
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93 |
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94 | @Override
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95 | public boolean equals(Object other) {
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96 | if (!(other instanceof MapListSetting))
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97 | return false;
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98 | return equalVal(((MapListSetting) other).getValue());
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99 | }
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100 | }
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