1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.tagging.ac;
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3 |
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4 | import java.util.ArrayList;
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5 | import java.util.Arrays;
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6 | import java.util.Collection;
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7 | import java.util.Collections;
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8 | import java.util.Comparator;
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9 | import java.util.HashMap;
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10 | import java.util.HashSet;
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11 | import java.util.LinkedHashSet;
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12 | import java.util.List;
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13 | import java.util.Map;
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14 | import java.util.Map.Entry;
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15 | import java.util.Objects;
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16 | import java.util.Set;
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17 | import java.util.function.Function;
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18 | import java.util.stream.Collectors;
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19 |
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20 | import org.openstreetmap.josm.data.osm.DataSet;
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21 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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22 | import org.openstreetmap.josm.data.osm.Relation;
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23 | import org.openstreetmap.josm.data.osm.RelationMember;
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24 | import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent;
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25 | import org.openstreetmap.josm.data.osm.event.DataChangedEvent;
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26 | import org.openstreetmap.josm.data.osm.event.DataSetListener;
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27 | import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
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28 | import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent;
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29 | import org.openstreetmap.josm.data.osm.event.PrimitivesRemovedEvent;
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30 | import org.openstreetmap.josm.data.osm.event.RelationMembersChangedEvent;
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31 | import org.openstreetmap.josm.data.osm.event.TagsChangedEvent;
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32 | import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
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33 | import org.openstreetmap.josm.data.tagging.ac.AutoCompletionItem;
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34 | import org.openstreetmap.josm.data.tagging.ac.AutoCompletionPriority;
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35 | import org.openstreetmap.josm.data.tagging.ac.AutoCompletionSet;
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36 | import org.openstreetmap.josm.gui.MainApplication;
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37 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerAddEvent;
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38 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerChangeListener;
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39 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerOrderChangeEvent;
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40 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerRemoveEvent;
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41 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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42 | import org.openstreetmap.josm.gui.tagging.presets.TaggingPreset;
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43 | import org.openstreetmap.josm.gui.tagging.presets.TaggingPresets;
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44 | import org.openstreetmap.josm.gui.tagging.presets.items.Roles.Role;
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45 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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46 | import org.openstreetmap.josm.tools.MultiMap;
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47 | import org.openstreetmap.josm.tools.Utils;
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48 |
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49 | /**
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50 | * AutoCompletionManager holds a cache of keys with a list of
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51 | * possible auto completion values for each key.
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52 | *
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53 | * Each DataSet can be assigned one AutoCompletionManager instance such that
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54 | * <ol>
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55 | * <li>any key used in a tag in the data set is part of the key list in the cache</li>
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56 | * <li>any value used in a tag for a specific key is part of the autocompletion list of this key</li>
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57 | * </ol>
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58 | *
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59 | * Building up auto completion lists should not
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60 | * slow down tabbing from input field to input field. Looping through the complete
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61 | * data set in order to build up the auto completion list for a specific input
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62 | * field is not efficient enough, hence this cache.
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63 | *
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64 | * TODO: respect the relation type for member role autocompletion
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65 | */
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66 | public class AutoCompletionManager implements DataSetListener {
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67 |
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68 | /**
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69 | * Data class to remember tags that the user has entered.
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70 | */
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71 | public static class UserInputTag {
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72 | private final String key;
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73 | private final String value;
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74 | private final boolean defaultKey;
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75 |
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76 | /**
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77 | * Constructor.
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78 | *
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79 | * @param key the tag key
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80 | * @param value the tag value
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81 | * @param defaultKey true, if the key was not really entered by the
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82 | * user, e.g. for preset text fields.
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83 | * In this case, the key will not get any higher priority, just the value.
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84 | */
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85 | public UserInputTag(String key, String value, boolean defaultKey) {
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86 | this.key = key;
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87 | this.value = value;
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88 | this.defaultKey = defaultKey;
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89 | }
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90 |
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91 | @Override
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92 | public int hashCode() {
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93 | return Objects.hash(key, value, defaultKey);
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94 | }
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95 |
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96 | @Override
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97 | public boolean equals(Object obj) {
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98 | if (obj == null || getClass() != obj.getClass()) {
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99 | return false;
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100 | }
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101 | final UserInputTag other = (UserInputTag) obj;
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102 | return this.defaultKey == other.defaultKey
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103 | && Objects.equals(this.key, other.key)
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104 | && Objects.equals(this.value, other.value);
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105 | }
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106 | }
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107 |
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108 | /** If the dirty flag is set true, a rebuild is necessary. */
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109 | protected boolean dirty;
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110 | /** The data set that is managed */
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111 | protected DataSet ds;
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112 |
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113 | /**
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114 | * the cached tags given by a tag key and a list of values for this tag
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115 | * only accessed by getTagCache(), rebuild() and cachePrimitiveTags()
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116 | * use getTagCache() accessor
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117 | */
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118 | protected MultiMap<String, String> tagCache;
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119 |
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120 | /**
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121 | * the same as tagCache but for the preset keys and values can be accessed directly
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122 | */
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123 | static final MultiMap<String, String> PRESET_TAG_CACHE = new MultiMap<>();
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124 |
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125 | /**
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126 | * Cache for tags that have been entered by the user.
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127 | */
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128 | static final Set<UserInputTag> USER_INPUT_TAG_CACHE = new LinkedHashSet<>();
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129 |
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130 | /**
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131 | * the cached list of member roles
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132 | * only accessed by getRoleCache(), rebuild() and cacheRelationMemberRoles()
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133 | * use getRoleCache() accessor
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134 | */
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135 | protected Set<String> roleCache;
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136 |
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137 | /**
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138 | * the same as roleCache but for the preset roles can be accessed directly
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139 | */
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140 | static final Set<String> PRESET_ROLE_CACHE = new HashSet<>();
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141 |
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142 | private static final Map<DataSet, AutoCompletionManager> INSTANCES = new HashMap<>();
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143 |
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144 | /**
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145 | * Constructs a new {@code AutoCompletionManager}.
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146 | * @param ds data set
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147 | * @throws NullPointerException if ds is null
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148 | */
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149 | public AutoCompletionManager(DataSet ds) {
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150 | this.ds = Objects.requireNonNull(ds);
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151 | this.dirty = true;
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152 | }
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153 |
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154 | protected MultiMap<String, String> getTagCache() {
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155 | if (dirty) {
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156 | rebuild();
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157 | dirty = false;
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158 | }
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159 | return tagCache;
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160 | }
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161 |
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162 | protected Set<String> getRoleCache() {
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163 | if (dirty) {
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164 | rebuild();
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165 | dirty = false;
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166 | }
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167 | return roleCache;
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168 | }
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169 |
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170 | /**
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171 | * initializes the cache from the primitives in the dataset
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172 | */
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173 | protected void rebuild() {
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174 | tagCache = new MultiMap<>();
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175 | roleCache = new HashSet<>();
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176 | cachePrimitives(ds.allNonDeletedCompletePrimitives());
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177 | }
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178 |
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179 | protected void cachePrimitives(Collection<? extends OsmPrimitive> primitives) {
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180 | for (OsmPrimitive primitive : primitives) {
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181 | cachePrimitiveTags(primitive);
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182 | if (primitive instanceof Relation) {
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183 | cacheRelationMemberRoles((Relation) primitive);
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184 | }
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185 | }
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186 | }
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187 |
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188 | /**
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189 | * make sure, the keys and values of all tags held by primitive are
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190 | * in the auto completion cache
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191 | *
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192 | * @param primitive an OSM primitive
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193 | */
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194 | protected void cachePrimitiveTags(OsmPrimitive primitive) {
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195 | for (String key: primitive.keySet()) {
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196 | String value = primitive.get(key);
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197 | tagCache.put(key, value);
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198 | }
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199 | }
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200 |
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201 | /**
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202 | * Caches all member roles of the relation <code>relation</code>
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203 | *
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204 | * @param relation the relation
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205 | */
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206 | protected void cacheRelationMemberRoles(Relation relation) {
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207 | for (RelationMember m: relation.getMembers()) {
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208 | if (m.hasRole()) {
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209 | roleCache.add(m.getRole());
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210 | }
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211 | }
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212 | }
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213 |
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214 | /**
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215 | * Remembers user input for the given key/value.
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216 | * @param key Tag key
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217 | * @param value Tag value
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218 | * @param defaultKey true, if the key was not really entered by the user, e.g. for preset text fields
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219 | */
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220 | public static void rememberUserInput(String key, String value, boolean defaultKey) {
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221 | UserInputTag tag = new UserInputTag(key, value, defaultKey);
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222 | USER_INPUT_TAG_CACHE.remove(tag); // re-add, so it gets to the last position of the LinkedHashSet
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223 | USER_INPUT_TAG_CACHE.add(tag);
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224 | }
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225 |
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226 | /**
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227 | * replies the keys held by the cache
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228 | *
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229 | * @return the list of keys held by the cache
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230 | */
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231 | protected List<String> getDataKeys() {
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232 | return new ArrayList<>(getTagCache().keySet());
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233 | }
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234 |
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235 | protected Collection<String> getUserInputKeys() {
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236 | List<String> keys = new ArrayList<>();
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237 | for (UserInputTag tag : USER_INPUT_TAG_CACHE) {
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238 | if (!tag.defaultKey) {
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239 | keys.add(tag.key);
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240 | }
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241 | }
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242 | Collections.reverse(keys);
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243 | return new LinkedHashSet<>(keys);
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244 | }
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245 |
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246 | /**
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247 | * replies the auto completion values allowed for a specific key. Replies
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248 | * an empty list if key is null or if key is not in {@link #getTagKeys()}.
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249 | *
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250 | * @param key OSM key
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251 | * @return the list of auto completion values
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252 | */
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253 | protected List<String> getDataValues(String key) {
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254 | return new ArrayList<>(getTagCache().getValues(key));
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255 | }
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256 |
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257 | protected static Collection<String> getUserInputValues(String key) {
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258 | List<String> values = new ArrayList<>();
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259 | for (UserInputTag tag : USER_INPUT_TAG_CACHE) {
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260 | if (key.equals(tag.key)) {
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261 | values.add(tag.value);
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262 | }
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263 | }
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264 | Collections.reverse(values);
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265 | return new LinkedHashSet<>(values);
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266 | }
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267 |
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268 | /**
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269 | * Replies the list of member roles
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270 | *
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271 | * @return the list of member roles
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272 | */
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273 | public List<String> getMemberRoles() {
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274 | return new ArrayList<>(getRoleCache());
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275 | }
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276 |
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277 | /**
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278 | * Populates the {@link AutoCompletionList} with the currently cached member roles.
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279 | *
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280 | * @param list the list to populate
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281 | */
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282 | public void populateWithMemberRoles(AutoCompletionList list) {
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283 | list.add(TaggingPresets.getPresetRoles(), AutoCompletionPriority.IS_IN_STANDARD);
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284 | list.add(getRoleCache(), AutoCompletionPriority.IS_IN_DATASET);
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285 | }
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286 |
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287 | /**
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288 | * Populates the {@link AutoCompletionList} with the roles used in this relation
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289 | * plus the ones defined in its applicable presets, if any. If the relation type is unknown,
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290 | * then all the roles known globally will be added, as in {@link #populateWithMemberRoles(AutoCompletionList)}.
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291 | *
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292 | * @param list the list to populate
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293 | * @param r the relation to get roles from
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294 | * @throws IllegalArgumentException if list is null
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295 | * @since 7556
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296 | */
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297 | public void populateWithMemberRoles(AutoCompletionList list, Relation r) {
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298 | CheckParameterUtil.ensureParameterNotNull(list, "list");
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299 | Collection<TaggingPreset> presets = r != null ? TaggingPresets.getMatchingPresets(null, r.getKeys(), false) : null;
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300 | if (r != null && presets != null && !presets.isEmpty()) {
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301 | for (TaggingPreset tp : presets) {
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302 | if (tp.roles != null) {
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303 | list.add(Utils.transform(tp.roles.roles, (Function<Role, String>) x -> x.key), AutoCompletionPriority.IS_IN_STANDARD);
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304 | }
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305 | }
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306 | list.add(r.getMemberRoles(), AutoCompletionPriority.IS_IN_DATASET);
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307 | } else {
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308 | populateWithMemberRoles(list);
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309 | }
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310 | }
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311 |
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312 | /**
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313 | * Populates the an {@link AutoCompletionList} with the currently cached tag keys
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314 | *
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315 | * @param list the list to populate
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316 | */
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317 | public void populateWithKeys(AutoCompletionList list) {
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318 | list.add(TaggingPresets.getPresetKeys(), AutoCompletionPriority.IS_IN_STANDARD);
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319 | list.add(new AutoCompletionItem("source", AutoCompletionPriority.IS_IN_STANDARD));
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320 | list.add(getDataKeys(), AutoCompletionPriority.IS_IN_DATASET);
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321 | list.addUserInput(getUserInputKeys());
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322 | }
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323 |
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324 | /**
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325 | * Populates the an {@link AutoCompletionList} with the currently cached values for a tag
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326 | *
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327 | * @param list the list to populate
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328 | * @param key the tag key
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329 | */
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330 | public void populateWithTagValues(AutoCompletionList list, String key) {
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331 | populateWithTagValues(list, Arrays.asList(key));
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332 | }
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333 |
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334 | /**
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335 | * Populates the {@link AutoCompletionList} with the currently cached values for some given tags
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336 | *
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337 | * @param list the list to populate
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338 | * @param keys the tag keys
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339 | */
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340 | public void populateWithTagValues(AutoCompletionList list, List<String> keys) {
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341 | for (String key : keys) {
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342 | list.add(TaggingPresets.getPresetValues(key), AutoCompletionPriority.IS_IN_STANDARD);
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343 | list.add(getDataValues(key), AutoCompletionPriority.IS_IN_DATASET);
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344 | list.addUserInput(getUserInputValues(key));
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345 | }
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346 | }
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347 |
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348 | private static List<AutoCompletionItem> setToList(AutoCompletionSet set, Comparator<AutoCompletionItem> comparator) {
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349 | List<AutoCompletionItem> list = set.stream().collect(Collectors.toList());
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350 | list.sort(comparator);
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351 | return list;
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352 | }
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353 |
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354 | /**
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355 | * Returns the currently cached tag keys.
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356 | * @return a set of tag keys
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357 | * @since 12859
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358 | */
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359 | public AutoCompletionSet getTagKeys() {
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360 | AutoCompletionList list = new AutoCompletionList();
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361 | populateWithKeys(list);
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362 | return list.getSet();
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363 | }
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364 |
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365 | /**
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366 | * Returns the currently cached tag keys.
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367 | * @param comparator the custom comparator used to sort the list
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368 | * @return a list of tag keys
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369 | * @since 12859
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370 | */
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371 | public List<AutoCompletionItem> getTagKeys(Comparator<AutoCompletionItem> comparator) {
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372 | return setToList(getTagKeys(), comparator);
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373 | }
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374 |
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375 | /**
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376 | * Returns the currently cached tag values for a given tag key.
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377 | * @param key the tag key
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378 | * @return a set of tag values
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379 | * @since 12859
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380 | */
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381 | public AutoCompletionSet getTagValues(String key) {
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382 | return getTagValues(Arrays.asList(key));
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383 | }
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384 |
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385 | /**
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386 | * Returns the currently cached tag values for a given tag key.
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387 | * @param key the tag key
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388 | * @param comparator the custom comparator used to sort the list
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389 | * @return a list of tag values
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390 | * @since 12859
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391 | */
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392 | public List<AutoCompletionItem> getTagValues(String key, Comparator<AutoCompletionItem> comparator) {
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393 | return setToList(getTagValues(key), comparator);
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394 | }
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395 |
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396 | /**
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397 | * Returns the currently cached tag values for a given list of tag keys.
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398 | * @param keys the tag keys
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399 | * @return a set of tag values
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400 | * @since 12859
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401 | */
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402 | public AutoCompletionSet getTagValues(List<String> keys) {
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403 | AutoCompletionList list = new AutoCompletionList();
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404 | populateWithTagValues(list, keys);
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405 | return list.getSet();
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406 | }
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407 |
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408 | /**
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409 | * Returns the currently cached tag values for a given list of tag keys.
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410 | * @param keys the tag keys
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411 | * @param comparator the custom comparator used to sort the list
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412 | * @return a set of tag values
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413 | * @since 12859
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414 | */
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415 | public List<AutoCompletionItem> getTagValues(List<String> keys, Comparator<AutoCompletionItem> comparator) {
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416 | return setToList(getTagValues(keys), comparator);
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417 | }
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418 |
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419 | /*
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420 | * Implementation of the DataSetListener interface
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421 | *
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422 | */
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423 |
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424 | @Override
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425 | public void primitivesAdded(PrimitivesAddedEvent event) {
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426 | if (dirty)
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427 | return;
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428 | cachePrimitives(event.getPrimitives());
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429 | }
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430 |
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431 | @Override
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432 | public void primitivesRemoved(PrimitivesRemovedEvent event) {
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433 | dirty = true;
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434 | }
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435 |
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436 | @Override
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437 | public void tagsChanged(TagsChangedEvent event) {
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438 | if (dirty)
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439 | return;
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440 | Map<String, String> newKeys = event.getPrimitive().getKeys();
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441 | Map<String, String> oldKeys = event.getOriginalKeys();
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442 |
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443 | if (!newKeys.keySet().containsAll(oldKeys.keySet())) {
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444 | // Some keys removed, might be the last instance of key, rebuild necessary
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445 | dirty = true;
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446 | } else {
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447 | for (Entry<String, String> oldEntry: oldKeys.entrySet()) {
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448 | if (!oldEntry.getValue().equals(newKeys.get(oldEntry.getKey()))) {
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449 | // Value changed, might be last instance of value, rebuild necessary
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450 | dirty = true;
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451 | return;
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452 | }
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453 | }
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454 | cachePrimitives(Collections.singleton(event.getPrimitive()));
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455 | }
|
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456 | }
|
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457 |
|
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458 | @Override
|
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459 | public void nodeMoved(NodeMovedEvent event) {/* ignored */}
|
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460 |
|
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461 | @Override
|
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462 | public void wayNodesChanged(WayNodesChangedEvent event) {/* ignored */}
|
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463 |
|
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464 | @Override
|
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465 | public void relationMembersChanged(RelationMembersChangedEvent event) {
|
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466 | dirty = true; // TODO: not necessary to rebuid if a member is added
|
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467 | }
|
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468 |
|
---|
469 | @Override
|
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470 | public void otherDatasetChange(AbstractDatasetChangedEvent event) {/* ignored */}
|
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471 |
|
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472 | @Override
|
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473 | public void dataChanged(DataChangedEvent event) {
|
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474 | dirty = true;
|
---|
475 | }
|
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476 |
|
---|
477 | private AutoCompletionManager registerListeners() {
|
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478 | ds.addDataSetListener(this);
|
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479 | MainApplication.getLayerManager().addLayerChangeListener(new LayerChangeListener() {
|
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480 | @Override
|
---|
481 | public void layerRemoving(LayerRemoveEvent e) {
|
---|
482 | if (e.getRemovedLayer() instanceof OsmDataLayer
|
---|
483 | && ((OsmDataLayer) e.getRemovedLayer()).data == ds) {
|
---|
484 | INSTANCES.remove(ds);
|
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485 | ds.removeDataSetListener(AutoCompletionManager.this);
|
---|
486 | MainApplication.getLayerManager().removeLayerChangeListener(this);
|
---|
487 | }
|
---|
488 | }
|
---|
489 |
|
---|
490 | @Override
|
---|
491 | public void layerOrderChanged(LayerOrderChangeEvent e) {
|
---|
492 | // Do nothing
|
---|
493 | }
|
---|
494 |
|
---|
495 | @Override
|
---|
496 | public void layerAdded(LayerAddEvent e) {
|
---|
497 | // Do nothing
|
---|
498 | }
|
---|
499 | });
|
---|
500 | return this;
|
---|
501 | }
|
---|
502 |
|
---|
503 | /**
|
---|
504 | * Returns the {@code AutoCompletionManager} for the given data set.
|
---|
505 | * @param dataSet the data set
|
---|
506 | * @return the {@code AutoCompletionManager} for the given data set
|
---|
507 | * @since 12758
|
---|
508 | */
|
---|
509 | public static AutoCompletionManager of(DataSet dataSet) {
|
---|
510 | return INSTANCES.computeIfAbsent(dataSet, ds -> new AutoCompletionManager(ds).registerListeners());
|
---|
511 | }
|
---|
512 | }
|
---|