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.marktr;
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5 | import static org.openstreetmap.josm.tools.I18n.tr;
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6 | import static org.openstreetmap.josm.tools.I18n.trn;
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7 |
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8 | import java.awt.GridBagLayout;
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9 | import java.util.ArrayList;
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10 | import java.util.Arrays;
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11 | import java.util.Collection;
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12 | import java.util.Collections;
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13 | import java.util.EnumSet;
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14 | import java.util.HashMap;
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15 | import java.util.HashSet;
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16 | import java.util.Iterator;
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17 | import java.util.LinkedList;
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18 | import java.util.List;
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19 | import java.util.Map;
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20 | import java.util.Map.Entry;
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21 | import java.util.Objects;
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22 | import java.util.Set;
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23 |
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24 | import javax.swing.Icon;
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25 | import javax.swing.JOptionPane;
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26 | import javax.swing.JPanel;
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27 |
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28 | import org.openstreetmap.josm.Main;
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29 | import org.openstreetmap.josm.actions.SplitWayAction;
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30 | import org.openstreetmap.josm.actions.SplitWayAction.SplitWayResult;
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31 | import org.openstreetmap.josm.data.osm.Node;
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32 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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33 | import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
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34 | import org.openstreetmap.josm.data.osm.PrimitiveData;
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35 | import org.openstreetmap.josm.data.osm.Relation;
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36 | import org.openstreetmap.josm.data.osm.RelationToChildReference;
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37 | import org.openstreetmap.josm.data.osm.Way;
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38 | import org.openstreetmap.josm.data.osm.WaySegment;
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39 | import org.openstreetmap.josm.gui.ConditionalOptionPaneUtil;
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40 | import org.openstreetmap.josm.gui.DefaultNameFormatter;
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41 | import org.openstreetmap.josm.gui.dialogs.DeleteFromRelationConfirmationDialog;
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42 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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43 | import org.openstreetmap.josm.gui.widgets.JMultilineLabel;
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44 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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45 | import org.openstreetmap.josm.tools.ImageProvider;
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46 | import org.openstreetmap.josm.tools.Utils;
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47 |
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48 | /**
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49 | * A command to delete a number of primitives from the dataset.
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50 | * @since 23
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51 | */
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52 | public class DeleteCommand extends Command {
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53 | /**
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54 | * The primitives that get deleted.
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55 | */
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56 | private final Collection<? extends OsmPrimitive> toDelete;
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57 | private final Map<OsmPrimitive, PrimitiveData> clonedPrimitives = new HashMap<>();
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58 |
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59 | /**
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60 | * Constructor. Deletes a collection of primitives in the current edit layer.
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61 | *
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62 | * @param data the primitives to delete. Must neither be null nor empty.
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63 | * @throws IllegalArgumentException if data is null or empty
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64 | */
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65 | public DeleteCommand(Collection<? extends OsmPrimitive> data) {
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66 | CheckParameterUtil.ensureParameterNotNull(data, "data");
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67 | if (data.isEmpty())
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68 | throw new IllegalArgumentException(tr("At least one object to delete required, got empty collection"));
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69 | this.toDelete = data;
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70 | checkConsistency();
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71 | }
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72 |
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73 | /**
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74 | * Constructor. Deletes a single primitive in the current edit layer.
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75 | *
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76 | * @param data the primitive to delete. Must not be null.
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77 | * @throws IllegalArgumentException if data is null
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78 | */
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79 | public DeleteCommand(OsmPrimitive data) {
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80 | this(Collections.singleton(data));
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81 | }
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82 |
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83 | /**
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84 | * Constructor for a single data item. Use the collection constructor to delete multiple
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85 | * objects.
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86 | *
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87 | * @param layer the layer context for deleting this primitive. Must not be null.
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88 | * @param data the primitive to delete. Must not be null.
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89 | * @throws IllegalArgumentException if data is null
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90 | * @throws IllegalArgumentException if layer is null
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91 | */
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92 | public DeleteCommand(OsmDataLayer layer, OsmPrimitive data) {
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93 | this(layer, Collections.singleton(data));
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94 | }
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95 |
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96 | /**
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97 | * Constructor for a collection of data to be deleted in the context of
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98 | * a specific layer
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99 | *
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100 | * @param layer the layer context for deleting these primitives. Must not be null.
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101 | * @param data the primitives to delete. Must neither be null nor empty.
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102 | * @throws IllegalArgumentException if layer is null
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103 | * @throws IllegalArgumentException if data is null or empty
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104 | */
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105 | public DeleteCommand(OsmDataLayer layer, Collection<? extends OsmPrimitive> data) {
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106 | super(layer);
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107 | CheckParameterUtil.ensureParameterNotNull(data, "data");
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108 | if (data.isEmpty())
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109 | throw new IllegalArgumentException(tr("At least one object to delete required, got empty collection"));
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110 | this.toDelete = data;
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111 | checkConsistency();
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112 | }
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113 |
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114 | private void checkConsistency() {
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115 | for (OsmPrimitive p : toDelete) {
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116 | if (p == null) {
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117 | throw new IllegalArgumentException("Primitive to delete must not be null");
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118 | } else if (p.getDataSet() == null) {
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119 | throw new IllegalArgumentException("Primitive to delete must be in a dataset");
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120 | }
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121 | }
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122 | }
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123 |
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124 | @Override
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125 | public boolean executeCommand() {
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126 | // Make copy and remove all references (to prevent inconsistent dataset (delete referenced) while command is executed)
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127 | for (OsmPrimitive osm: toDelete) {
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128 | if (osm.isDeleted())
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129 | throw new IllegalArgumentException(osm + " is already deleted");
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130 | clonedPrimitives.put(osm, osm.save());
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131 |
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132 | if (osm instanceof Way) {
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133 | ((Way) osm).setNodes(null);
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134 | } else if (osm instanceof Relation) {
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135 | ((Relation) osm).setMembers(null);
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136 | }
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137 | }
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138 |
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139 | for (OsmPrimitive osm: toDelete) {
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140 | osm.setDeleted(true);
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141 | }
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142 |
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143 | return true;
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144 | }
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145 |
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146 | @Override
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147 | public void undoCommand() {
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148 | for (OsmPrimitive osm: toDelete) {
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149 | osm.setDeleted(false);
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150 | }
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151 |
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152 | for (Entry<OsmPrimitive, PrimitiveData> entry: clonedPrimitives.entrySet()) {
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153 | entry.getKey().load(entry.getValue());
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154 | }
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155 | }
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156 |
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157 | @Override
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158 | public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted, Collection<OsmPrimitive> added) {
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159 | // Do nothing
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160 | }
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161 |
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162 | private EnumSet<OsmPrimitiveType> getTypesToDelete() {
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163 | EnumSet<OsmPrimitiveType> typesToDelete = EnumSet.noneOf(OsmPrimitiveType.class);
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164 | for (OsmPrimitive osm : toDelete) {
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165 | typesToDelete.add(OsmPrimitiveType.from(osm));
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166 | }
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167 | return typesToDelete;
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168 | }
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169 |
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170 | @Override
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171 | public String getDescriptionText() {
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172 | if (toDelete.size() == 1) {
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173 | OsmPrimitive primitive = toDelete.iterator().next();
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174 | String msg;
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175 | switch(OsmPrimitiveType.from(primitive)) {
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176 | case NODE: msg = marktr("Delete node {0}"); break;
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177 | case WAY: msg = marktr("Delete way {0}"); break;
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178 | case RELATION:msg = marktr("Delete relation {0}"); break;
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179 | default: throw new AssertionError();
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180 | }
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181 |
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182 | return tr(msg, primitive.getDisplayName(DefaultNameFormatter.getInstance()));
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183 | } else {
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184 | Set<OsmPrimitiveType> typesToDelete = getTypesToDelete();
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185 | String msg;
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186 | if (typesToDelete.size() > 1) {
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187 | msg = trn("Delete {0} object", "Delete {0} objects", toDelete.size(), toDelete.size());
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188 | } else {
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189 | OsmPrimitiveType t = typesToDelete.iterator().next();
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190 | switch(t) {
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191 | case NODE: msg = trn("Delete {0} node", "Delete {0} nodes", toDelete.size(), toDelete.size()); break;
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192 | case WAY: msg = trn("Delete {0} way", "Delete {0} ways", toDelete.size(), toDelete.size()); break;
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193 | case RELATION: msg = trn("Delete {0} relation", "Delete {0} relations", toDelete.size(), toDelete.size()); break;
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194 | default: throw new AssertionError();
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195 | }
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196 | }
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197 | return msg;
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198 | }
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199 | }
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200 |
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201 | @Override
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202 | public Icon getDescriptionIcon() {
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203 | if (toDelete.size() == 1)
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204 | return ImageProvider.get(toDelete.iterator().next().getDisplayType());
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205 | Set<OsmPrimitiveType> typesToDelete = getTypesToDelete();
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206 | if (typesToDelete.size() > 1)
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207 | return ImageProvider.get("data", "object");
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208 | else
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209 | return ImageProvider.get(typesToDelete.iterator().next());
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210 | }
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211 |
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212 | @Override public Collection<PseudoCommand> getChildren() {
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213 | if (toDelete.size() == 1)
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214 | return null;
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215 | else {
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216 | List<PseudoCommand> children = new ArrayList<>(toDelete.size());
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217 | for (final OsmPrimitive osm : toDelete) {
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218 | children.add(new PseudoCommand() {
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219 |
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220 | @Override public String getDescriptionText() {
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221 | return tr("Deleted ''{0}''", osm.getDisplayName(DefaultNameFormatter.getInstance()));
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222 | }
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223 |
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224 | @Override public Icon getDescriptionIcon() {
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225 | return ImageProvider.get(osm.getDisplayType());
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226 | }
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227 |
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228 | @Override public Collection<? extends OsmPrimitive> getParticipatingPrimitives() {
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229 | return Collections.singleton(osm);
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230 | }
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231 |
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232 | });
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233 | }
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234 | return children;
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235 |
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236 | }
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237 | }
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238 |
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239 | @Override public Collection<? extends OsmPrimitive> getParticipatingPrimitives() {
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240 | return toDelete;
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241 | }
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242 |
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243 | /**
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244 | * Delete the primitives and everything they reference.
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245 | *
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246 | * If a node is deleted, the node and all ways and relations the node is part of are deleted as well.
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247 | * If a way is deleted, all relations the way is member of are also deleted.
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248 | * If a way is deleted, only the way and no nodes are deleted.
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249 | *
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250 | * @param layer the {@link OsmDataLayer} in whose context primitives are deleted. Must not be null.
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251 | * @param selection The list of all object to be deleted.
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252 | * @param silent Set to true if the user should not be bugged with additional dialogs
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253 | * @return command A command to perform the deletions, or null of there is nothing to delete.
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254 | * @throws IllegalArgumentException if layer is null
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255 | */
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256 | public static Command deleteWithReferences(OsmDataLayer layer, Collection<? extends OsmPrimitive> selection, boolean silent) {
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257 | CheckParameterUtil.ensureParameterNotNull(layer, "layer");
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258 | if (selection == null || selection.isEmpty()) return null;
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259 | Set<OsmPrimitive> parents = OsmPrimitive.getReferrer(selection);
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260 | parents.addAll(selection);
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261 |
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262 | if (parents.isEmpty())
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263 | return null;
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264 | if (!silent && !checkAndConfirmOutlyingDelete(parents, null))
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265 | return null;
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266 | return new DeleteCommand(layer, parents);
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267 | }
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268 |
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269 | /**
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270 | * Delete the primitives and everything they reference.
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271 | *
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272 | * If a node is deleted, the node and all ways and relations the node is part of are deleted as well.
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273 | * If a way is deleted, all relations the way is member of are also deleted.
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274 | * If a way is deleted, only the way and no nodes are deleted.
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275 | *
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276 | * @param layer the {@link OsmDataLayer} in whose context primitives are deleted. Must not be null.
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277 | * @param selection The list of all object to be deleted.
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278 | * @return command A command to perform the deletions, or null of there is nothing to delete.
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279 | * @throws IllegalArgumentException if layer is null
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280 | */
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281 | public static Command deleteWithReferences(OsmDataLayer layer, Collection<? extends OsmPrimitive> selection) {
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282 | return deleteWithReferences(layer, selection, false);
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283 | }
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284 |
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285 | /**
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286 | * Try to delete all given primitives.
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287 | *
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288 | * If a node is used by a way, it's removed from that way. If a node or a way is used by a
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289 | * relation, inform the user and do not delete.
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290 | *
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291 | * If this would cause ways with less than 2 nodes to be created, delete these ways instead. If
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292 | * they are part of a relation, inform the user and do not delete.
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293 | *
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294 | * @param layer the {@link OsmDataLayer} in whose context the primitives are deleted
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295 | * @param selection the objects to delete.
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296 | * @return command a command to perform the deletions, or null if there is nothing to delete.
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297 | */
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298 | public static Command delete(OsmDataLayer layer, Collection<? extends OsmPrimitive> selection) {
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299 | return delete(layer, selection, true, false);
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300 | }
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301 |
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302 | /**
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303 | * Replies the collection of nodes referred to by primitives in <code>primitivesToDelete</code> which
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304 | * can be deleted too. A node can be deleted if
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305 | * <ul>
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306 | * <li>it is untagged (see {@link Node#isTagged()}</li>
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307 | * <li>it is not referred to by other non-deleted primitives outside of <code>primitivesToDelete</code></li>
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308 | * </ul>
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309 | * @param primitivesToDelete the primitives to delete
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310 | * @return the collection of nodes referred to by primitives in <code>primitivesToDelete</code> which
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311 | * can be deleted too
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312 | */
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313 | protected static Collection<Node> computeNodesToDelete(Collection<OsmPrimitive> primitivesToDelete) {
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314 | Collection<Node> nodesToDelete = new HashSet<>();
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315 | for (Way way : OsmPrimitive.getFilteredList(primitivesToDelete, Way.class)) {
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316 | for (Node n : way.getNodes()) {
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317 | if (n.isTagged()) {
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318 | continue;
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319 | }
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320 | Collection<OsmPrimitive> referringPrimitives = n.getReferrers();
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321 | referringPrimitives.removeAll(primitivesToDelete);
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322 | int count = 0;
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323 | for (OsmPrimitive p : referringPrimitives) {
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324 | if (!p.isDeleted()) {
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325 | count++;
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326 | }
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327 | }
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328 | if (count == 0) {
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329 | nodesToDelete.add(n);
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330 | }
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331 | }
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332 | }
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333 | return nodesToDelete;
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334 | }
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335 |
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336 | /**
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337 | * Try to delete all given primitives.
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338 | *
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339 | * If a node is used by a way, it's removed from that way. If a node or a way is used by a
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340 | * relation, inform the user and do not delete.
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341 | *
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342 | * If this would cause ways with less than 2 nodes to be created, delete these ways instead. If
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343 | * they are part of a relation, inform the user and do not delete.
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344 | *
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345 | * @param layer the {@link OsmDataLayer} in whose context the primitives are deleted
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346 | * @param selection the objects to delete.
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347 | * @param alsoDeleteNodesInWay <code>true</code> if nodes should be deleted as well
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348 | * @return command a command to perform the deletions, or null if there is nothing to delete.
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349 | */
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350 | public static Command delete(OsmDataLayer layer, Collection<? extends OsmPrimitive> selection,
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351 | boolean alsoDeleteNodesInWay) {
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352 | return delete(layer, selection, alsoDeleteNodesInWay, false /* not silent */);
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353 | }
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354 |
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355 | /**
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356 | * Try to delete all given primitives.
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357 | *
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358 | * If a node is used by a way, it's removed from that way. If a node or a way is used by a
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359 | * relation, inform the user and do not delete.
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360 | *
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361 | * If this would cause ways with less than 2 nodes to be created, delete these ways instead. If
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362 | * they are part of a relation, inform the user and do not delete.
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363 | *
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364 | * @param layer the {@link OsmDataLayer} in whose context the primitives are deleted
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365 | * @param selection the objects to delete.
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366 | * @param alsoDeleteNodesInWay <code>true</code> if nodes should be deleted as well
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367 | * @param silent set to true if the user should not be bugged with additional questions
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368 | * @return command a command to perform the deletions, or null if there is nothing to delete.
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369 | */
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370 | public static Command delete(OsmDataLayer layer, Collection<? extends OsmPrimitive> selection,
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371 | boolean alsoDeleteNodesInWay, boolean silent) {
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372 | if (selection == null || selection.isEmpty())
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373 | return null;
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374 |
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375 | // Diamond operator does not work with Java 9 here
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376 | @SuppressWarnings("unused")
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377 | Set<OsmPrimitive> primitivesToDelete = new HashSet<OsmPrimitive>(selection);
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378 |
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379 | Collection<Relation> relationsToDelete = Utils.filteredCollection(primitivesToDelete, Relation.class);
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380 | if (!relationsToDelete.isEmpty() && !silent && !confirmRelationDeletion(relationsToDelete))
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381 | return null;
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382 |
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383 | if (alsoDeleteNodesInWay) {
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384 | // delete untagged nodes only referenced by primitives in primitivesToDelete, too
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385 | Collection<Node> nodesToDelete = computeNodesToDelete(primitivesToDelete);
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386 | primitivesToDelete.addAll(nodesToDelete);
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387 | }
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388 |
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389 | if (!silent && !checkAndConfirmOutlyingDelete(
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390 | primitivesToDelete, Utils.filteredCollection(primitivesToDelete, Way.class)))
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391 | return null;
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392 |
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393 | Collection<Way> waysToBeChanged = new HashSet<>(OsmPrimitive.getFilteredSet(OsmPrimitive.getReferrer(primitivesToDelete), Way.class));
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394 |
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395 | Collection<Command> cmds = new LinkedList<>();
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396 | for (Way w : waysToBeChanged) {
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397 | Way wnew = new Way(w);
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398 | wnew.removeNodes(OsmPrimitive.getFilteredSet(primitivesToDelete, Node.class));
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399 | if (wnew.getNodesCount() < 2) {
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400 | primitivesToDelete.add(w);
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401 | } else {
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402 | cmds.add(new ChangeNodesCommand(w, wnew.getNodes()));
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403 | }
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404 | }
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405 |
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406 | // get a confirmation that the objects to delete can be removed from their parent relations
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407 | //
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408 | if (!silent) {
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409 | Set<RelationToChildReference> references = RelationToChildReference.getRelationToChildReferences(primitivesToDelete);
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410 | Iterator<RelationToChildReference> it = references.iterator();
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411 | while (it.hasNext()) {
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412 | RelationToChildReference ref = it.next();
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413 | if (ref.getParent().isDeleted()) {
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414 | it.remove();
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415 | }
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416 | }
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417 | if (!references.isEmpty()) {
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418 | DeleteFromRelationConfirmationDialog dialog = DeleteFromRelationConfirmationDialog.getInstance();
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419 | dialog.getModel().populate(references);
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420 | dialog.setVisible(true);
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421 | if (dialog.isCanceled())
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422 | return null;
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423 | }
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424 | }
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425 |
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426 | // remove the objects from their parent relations
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427 | //
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428 | for (Relation cur : OsmPrimitive.getFilteredSet(OsmPrimitive.getReferrer(primitivesToDelete), Relation.class)) {
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429 | Relation rel = new Relation(cur);
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430 | rel.removeMembersFor(primitivesToDelete);
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431 | cmds.add(new ChangeCommand(cur, rel));
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432 | }
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433 |
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434 | // build the delete command
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435 | //
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436 | if (!primitivesToDelete.isEmpty()) {
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437 | cmds.add(new DeleteCommand(layer, primitivesToDelete));
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438 | }
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439 |
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440 | return new SequenceCommand(tr("Delete"), cmds);
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441 | }
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442 |
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443 | public static Command deleteWaySegment(OsmDataLayer layer, WaySegment ws) {
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444 | if (ws.way.getNodesCount() < 3)
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445 | return delete(layer, Collections.singleton(ws.way), false);
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446 |
|
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447 | if (ws.way.isClosed()) {
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448 | // If the way is circular (first and last nodes are the same), the way shouldn't be splitted
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449 |
|
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450 | List<Node> n = new ArrayList<>();
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451 |
|
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452 | n.addAll(ws.way.getNodes().subList(ws.lowerIndex + 1, ws.way.getNodesCount() - 1));
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453 | n.addAll(ws.way.getNodes().subList(0, ws.lowerIndex + 1));
|
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454 |
|
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455 | Way wnew = new Way(ws.way);
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456 | wnew.setNodes(n);
|
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457 |
|
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458 | return new ChangeCommand(ws.way, wnew);
|
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459 | }
|
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460 |
|
---|
461 | List<Node> n1 = new ArrayList<>();
|
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462 | List<Node> n2 = new ArrayList<>();
|
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463 |
|
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464 | n1.addAll(ws.way.getNodes().subList(0, ws.lowerIndex + 1));
|
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465 | n2.addAll(ws.way.getNodes().subList(ws.lowerIndex + 1, ws.way.getNodesCount()));
|
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466 |
|
---|
467 | Way wnew = new Way(ws.way);
|
---|
468 |
|
---|
469 | if (n1.size() < 2) {
|
---|
470 | wnew.setNodes(n2);
|
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471 | return new ChangeCommand(ws.way, wnew);
|
---|
472 | } else if (n2.size() < 2) {
|
---|
473 | wnew.setNodes(n1);
|
---|
474 | return new ChangeCommand(ws.way, wnew);
|
---|
475 | } else {
|
---|
476 | SplitWayResult split = SplitWayAction.splitWay(layer, ws.way, Arrays.asList(n1, n2), Collections.<OsmPrimitive>emptyList());
|
---|
477 | return split != null ? split.getCommand() : null;
|
---|
478 | }
|
---|
479 | }
|
---|
480 |
|
---|
481 | public static boolean checkAndConfirmOutlyingDelete(Collection<? extends OsmPrimitive> primitives,
|
---|
482 | Collection<? extends OsmPrimitive> ignore) {
|
---|
483 | return Command.checkAndConfirmOutlyingOperation("delete",
|
---|
484 | tr("Delete confirmation"),
|
---|
485 | tr("You are about to delete nodes outside of the area you have downloaded."
|
---|
486 | + "<br>"
|
---|
487 | + "This can cause problems because other objects (that you do not see) might use them."
|
---|
488 | + "<br>"
|
---|
489 | + "Do you really want to delete?"),
|
---|
490 | tr("You are about to delete incomplete objects."
|
---|
491 | + "<br>"
|
---|
492 | + "This will cause problems because you don''t see the real object."
|
---|
493 | + "<br>" + "Do you really want to delete?"),
|
---|
494 | primitives, ignore);
|
---|
495 | }
|
---|
496 |
|
---|
497 | private static boolean confirmRelationDeletion(Collection<Relation> relations) {
|
---|
498 | JPanel msg = new JPanel(new GridBagLayout());
|
---|
499 | msg.add(new JMultilineLabel("<html>" + trn(
|
---|
500 | "You are about to delete {0} relation: {1}"
|
---|
501 | + "<br/>"
|
---|
502 | + "This step is rarely necessary and cannot be undone easily after being uploaded to the server."
|
---|
503 | + "<br/>"
|
---|
504 | + "Do you really want to delete?",
|
---|
505 | "You are about to delete {0} relations: {1}"
|
---|
506 | + "<br/>"
|
---|
507 | + "This step is rarely necessary and cannot be undone easily after being uploaded to the server."
|
---|
508 | + "<br/>"
|
---|
509 | + "Do you really want to delete?",
|
---|
510 | relations.size(), relations.size(), DefaultNameFormatter.getInstance().formatAsHtmlUnorderedList(relations, 20))
|
---|
511 | + "</html>"));
|
---|
512 | return ConditionalOptionPaneUtil.showConfirmationDialog(
|
---|
513 | "delete_relations",
|
---|
514 | Main.parent,
|
---|
515 | msg,
|
---|
516 | tr("Delete relation?"),
|
---|
517 | JOptionPane.YES_NO_OPTION,
|
---|
518 | JOptionPane.QUESTION_MESSAGE,
|
---|
519 | JOptionPane.YES_OPTION);
|
---|
520 | }
|
---|
521 |
|
---|
522 | @Override
|
---|
523 | public int hashCode() {
|
---|
524 | return Objects.hash(super.hashCode(), toDelete, clonedPrimitives);
|
---|
525 | }
|
---|
526 |
|
---|
527 | @Override
|
---|
528 | public boolean equals(Object obj) {
|
---|
529 | if (this == obj) return true;
|
---|
530 | if (obj == null || getClass() != obj.getClass()) return false;
|
---|
531 | if (!super.equals(obj)) return false;
|
---|
532 | DeleteCommand that = (DeleteCommand) obj;
|
---|
533 | return Objects.equals(toDelete, that.toDelete) &&
|
---|
534 | Objects.equals(clonedPrimitives, that.clonedPrimitives);
|
---|
535 | }
|
---|
536 | }
|
---|