1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 | import static org.openstreetmap.josm.tools.I18n.trn;
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6 |
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7 | import java.awt.event.ActionEvent;
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8 | import java.awt.event.KeyEvent;
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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.HashMap;
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14 | import java.util.HashSet;
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15 | import java.util.LinkedHashSet;
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16 | import java.util.List;
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17 | import java.util.Map;
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18 | import java.util.Map.Entry;
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19 | import java.util.Set;
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20 | import java.util.TreeSet;
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21 | import java.util.stream.Collectors;
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22 |
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23 | import javax.swing.JOptionPane;
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24 | import javax.swing.SwingUtilities;
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25 |
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26 | import org.openstreetmap.josm.actions.relation.DownloadSelectedIncompleteMembersAction;
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27 | import org.openstreetmap.josm.command.AddCommand;
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28 | import org.openstreetmap.josm.command.ChangeCommand;
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29 | import org.openstreetmap.josm.command.ChangeMembersCommand;
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30 | import org.openstreetmap.josm.command.ChangePropertyCommand;
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31 | import org.openstreetmap.josm.command.Command;
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32 | import org.openstreetmap.josm.command.SequenceCommand;
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33 | import org.openstreetmap.josm.data.UndoRedoHandler;
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34 | import org.openstreetmap.josm.data.osm.DataSet;
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35 | import org.openstreetmap.josm.data.osm.IPrimitive;
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36 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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37 | import org.openstreetmap.josm.data.osm.OsmUtils;
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38 | import org.openstreetmap.josm.data.osm.Relation;
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39 | import org.openstreetmap.josm.data.osm.RelationMember;
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40 | import org.openstreetmap.josm.data.osm.Way;
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41 | import org.openstreetmap.josm.data.validation.TestError;
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42 | import org.openstreetmap.josm.data.validation.tests.MultipolygonTest;
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43 | import org.openstreetmap.josm.gui.MainApplication;
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44 | import org.openstreetmap.josm.gui.Notification;
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45 | import org.openstreetmap.josm.gui.dialogs.relation.DownloadRelationMemberTask;
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46 | import org.openstreetmap.josm.gui.dialogs.relation.DownloadRelationTask;
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47 | import org.openstreetmap.josm.gui.dialogs.relation.RelationEditor;
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48 | import org.openstreetmap.josm.gui.dialogs.relation.sort.RelationSorter;
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49 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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50 | import org.openstreetmap.josm.gui.util.GuiHelper;
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51 | import org.openstreetmap.josm.spi.preferences.Config;
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52 | import org.openstreetmap.josm.tools.Pair;
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53 | import org.openstreetmap.josm.tools.Shortcut;
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54 | import org.openstreetmap.josm.tools.SubclassFilteredCollection;
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55 | import org.openstreetmap.josm.tools.Utils;
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56 |
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57 | /**
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58 | * Create multipolygon from selected ways automatically.
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59 | *
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60 | * New relation with type=multipolygon is created.
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61 | *
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62 | * If one or more of ways is already in relation with type=multipolygon or the
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63 | * way is not closed, then error is reported and no relation is created.
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64 | *
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65 | * The "inner" and "outer" roles are guessed automatically. First, bbox is
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66 | * calculated for each way. then the largest area is assumed to be outside and
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67 | * the rest inside. In cases with one "outside" area and several cut-ins, the
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68 | * guess should be always good ... In more complex (multiple outer areas) or
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69 | * buggy (inner and outer ways intersect) scenarios the result is likely to be
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70 | * wrong.
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71 | */
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72 | public class CreateMultipolygonAction extends JosmAction {
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73 |
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74 | private final boolean update;
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75 | private static final int MAX_MEMBERS_TO_DOWNLOAD = 100;
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76 |
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77 | /**
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78 | * Constructs a new {@code CreateMultipolygonAction}.
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79 | * @param update {@code true} if the multipolygon must be updated, {@code false} if it must be created
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80 | */
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81 | public CreateMultipolygonAction(final boolean update) {
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82 | super(getName(update),
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83 | update ? /* ICON */ "multipoly_update" : /* ICON */ "multipoly_create",
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84 | getName(update),
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85 | /* at least three lines for each shortcut or the server extractor fails */
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86 | update ? Shortcut.registerShortcut("tools:multipoly_update",
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87 | tr("Tools: {0}", getName(true)),
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88 | KeyEvent.VK_B, Shortcut.CTRL_SHIFT)
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89 | : Shortcut.registerShortcut("tools:multipoly_create",
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90 | tr("Tools: {0}", getName(false)),
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91 | KeyEvent.VK_B, Shortcut.CTRL),
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92 | true, update ? "multipoly_update" : "multipoly_create", true);
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93 | this.update = update;
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94 | }
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95 |
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96 | private static String getName(boolean update) {
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97 | return update ? tr("Update multipolygon") : tr("Create multipolygon");
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98 | }
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99 |
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100 | private static final class CreateUpdateMultipolygonTask implements Runnable {
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101 | private final Collection<Way> selectedWays;
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102 | private final Relation multipolygonRelation;
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103 |
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104 | private CreateUpdateMultipolygonTask(Collection<Way> selectedWays, Relation multipolygonRelation) {
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105 | this.selectedWays = selectedWays;
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106 | this.multipolygonRelation = multipolygonRelation;
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107 | }
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108 |
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109 | @Override
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110 | public void run() {
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111 | final Pair<SequenceCommand, Relation> commandAndRelation = createMultipolygonCommand(selectedWays, multipolygonRelation);
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112 | if (commandAndRelation == null) {
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113 | return;
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114 | }
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115 |
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116 | // to avoid EDT violations
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117 | SwingUtilities.invokeLater(() -> {
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118 | UndoRedoHandler.getInstance().add(commandAndRelation.a);
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119 | Relation calculatedRel = commandAndRelation.b;
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120 | if (calculatedRel.getDataSet() == null) {
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121 | calculatedRel.setMembers(null); // see #19885
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122 | }
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123 | final Relation relation = (Relation) MainApplication.getLayerManager().getEditDataSet()
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124 | .getPrimitiveById(calculatedRel);
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125 | if (relation == null || relation.getDataSet() == null)
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126 | return; // should not happen
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127 |
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128 | // Use 'SwingUtilities.invokeLater' to make sure the relationListDialog
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129 | // knows about the new relation before we try to select it.
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130 | // (Yes, we are already in event dispatch thread. But DatasetEventManager
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131 | // uses 'SwingUtilities.invokeLater' to fire events so we have to do the same.)
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132 | SwingUtilities.invokeLater(() -> {
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133 | MainApplication.getMap().relationListDialog.selectRelation(relation);
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134 | if (Config.getPref().getBoolean("multipoly.show-relation-editor", false)) {
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135 | //Open relation edit window, if set up in preferences
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136 | // see #19346 un-select updated multipolygon
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137 | MainApplication.getLayerManager().getEditDataSet().clearSelection(relation);
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138 | RelationEditor editor = RelationEditor
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139 | .getEditor(MainApplication.getLayerManager().getEditLayer(), relation, null);
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140 | editor.setVisible(true);
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141 | } else {
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142 | MainApplication.getLayerManager().getEditLayer().setRecentRelation(relation);
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143 | if (multipolygonRelation == null) {
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144 | // see #19346 select new multipolygon
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145 | MainApplication.getLayerManager().getEditDataSet().setSelected(relation);
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146 | }
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147 | }
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148 | });
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149 | });
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150 | }
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151 | }
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152 |
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153 | @Override
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154 | public void actionPerformed(ActionEvent e) {
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155 | DataSet dataSet = getLayerManager().getEditDataSet();
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156 | if (dataSet == null) {
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157 | new Notification(
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158 | tr("No data loaded."))
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159 | .setIcon(JOptionPane.WARNING_MESSAGE)
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160 | .setDuration(Notification.TIME_SHORT)
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161 | .show();
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162 | return;
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163 | }
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164 |
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165 | final Collection<Way> selectedWays = dataSet.getSelectedWays();
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166 |
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167 | if (selectedWays.isEmpty()) {
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168 | // Sometimes it make sense creating multipoly of only one way (so it will form outer way)
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169 | // and then splitting the way later (so there are multiple ways forming outer way)
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170 | new Notification(
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171 | tr("You must select at least one way."))
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172 | .setIcon(JOptionPane.INFORMATION_MESSAGE)
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173 | .setDuration(Notification.TIME_SHORT)
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174 | .show();
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175 | return;
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176 | }
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177 |
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178 | final Collection<Relation> selectedRelations = dataSet.getSelectedRelations();
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179 | final Relation multipolygonRelation = update
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180 | ? getSelectedMultipolygonRelation(selectedWays, selectedRelations)
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181 | : null;
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182 |
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183 | if (update && multipolygonRelation == null)
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184 | return;
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185 | // download incomplete relation or incomplete members if necessary
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186 | OsmDataLayer editLayer = getLayerManager().getEditLayer();
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187 | if (multipolygonRelation != null && editLayer != null && editLayer.isDownloadable()) {
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188 | if (!multipolygonRelation.isNew() && multipolygonRelation.isIncomplete()) {
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189 | MainApplication.worker
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190 | .submit(new DownloadRelationTask(Collections.singleton(multipolygonRelation), editLayer));
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191 | } else if (multipolygonRelation.hasIncompleteMembers()) {
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192 | // with complex relations the download of the full relation is much faster than download of almost all members, see #18341
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193 | SubclassFilteredCollection<IPrimitive, OsmPrimitive> incompleteMembers = Utils
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194 | .filteredCollection(DownloadSelectedIncompleteMembersAction.buildSetOfIncompleteMembers(
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195 | Collections.singleton(multipolygonRelation)), OsmPrimitive.class);
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196 |
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197 | if (incompleteMembers.size() <= MAX_MEMBERS_TO_DOWNLOAD) {
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198 | MainApplication.worker
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199 | .submit(new DownloadRelationMemberTask(multipolygonRelation, incompleteMembers, editLayer));
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200 | } else {
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201 | MainApplication.worker
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202 | .submit(new DownloadRelationTask(Collections.singleton(multipolygonRelation), editLayer));
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203 |
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204 | }
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205 | }
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206 | }
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207 | // create/update multipolygon relation
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208 | MainApplication.worker.submit(new CreateUpdateMultipolygonTask(selectedWays, multipolygonRelation));
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209 | }
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210 |
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211 | private static Relation getSelectedMultipolygonRelation(Collection<Way> selectedWays, Collection<Relation> selectedRelations) {
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212 | Relation candidate = null;
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213 | if (selectedRelations.size() == 1) {
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214 | candidate = selectedRelations.iterator().next();
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215 | if (!candidate.hasTag("type", "multipolygon"))
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216 | candidate = null;
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217 | } else if (!selectedWays.isEmpty()) {
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218 | for (final Way w : selectedWays) {
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219 | for (OsmPrimitive r : w.getReferrers()) {
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220 | if (r != candidate && !r.isDisabled() && r instanceof Relation && r.hasTag("type", "multipolygon")) {
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221 | if (candidate != null)
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222 | return null; // found another multipolygon relation
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223 | candidate = (Relation) r;
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224 | }
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225 | }
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226 | }
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227 | }
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228 | return candidate;
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229 | }
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230 |
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231 | /**
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232 | * Returns a {@link Pair} of the old multipolygon {@link Relation} (or null) and the newly created/modified multipolygon {@link Relation}.
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233 | * @param selectedWays selected ways
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234 | * @param selectedMultipolygonRelation selected multipolygon relation
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235 | * @return null if ways don't build a valid multipolygon, pair of old and new multipolygon relation if a difference was found,
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236 | * else the pair contains the old relation twice
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237 | */
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238 | public static Pair<Relation, Relation> updateMultipolygonRelation(Collection<Way> selectedWays, Relation selectedMultipolygonRelation) {
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239 |
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240 | // add ways of existing relation to include them in polygon analysis
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241 | Set<Way> ways = new HashSet<>(selectedWays);
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242 | ways.addAll(selectedMultipolygonRelation.getMemberPrimitives(Way.class));
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243 |
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244 | // even if no way was added the inner/outer roles might be different
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245 | MultipolygonTest mpTest = new MultipolygonTest();
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246 | Relation calculated = mpTest.makeFromWays(ways);
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247 | if (mpTest.getErrors().isEmpty()) {
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248 | return mergeRelationsMembers(selectedMultipolygonRelation, calculated);
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249 | }
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250 | showErrors(mpTest.getErrors());
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251 | calculated.setMembers(null); // see #19885
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252 | return null; //could not make multipolygon.
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253 | }
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254 |
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255 | /**
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256 | * Merge members of multipolygon relation. Maintains the order of the old relation. May change roles,
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257 | * removes duplicate and non-way members and adds new members found in {@code calculated}.
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258 | * @param old old multipolygon relation
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259 | * @param calculated calculated multipolygon relation
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260 | * @return pair of old and new multipolygon relation if a difference was found, else the pair contains the old relation twice
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261 | */
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262 | private static Pair<Relation, Relation> mergeRelationsMembers(Relation old, Relation calculated) {
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263 | Set<RelationMember> merged = new LinkedHashSet<>();
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264 | boolean foundDiff = false;
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265 | int nonWayMember = 0;
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266 | // maintain order of members in updated relation
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267 | for (RelationMember oldMem :old.getMembers()) {
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268 | if (oldMem.isNode() || oldMem.isRelation()) {
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269 | nonWayMember++;
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270 | continue;
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271 | }
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272 | for (RelationMember newMem : calculated.getMembers()) {
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273 | if (newMem.getMember().equals(oldMem.getMember())) {
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274 | if (!newMem.getRole().equals(oldMem.getRole())) {
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275 | foundDiff = true;
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276 | }
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277 | foundDiff |= !merged.add(newMem); // detect duplicate members in old relation
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278 | break;
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279 | }
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280 | }
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281 | }
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282 | if (nonWayMember > 0) {
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283 | foundDiff = true;
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284 | String msg = trn("Non-Way member removed from multipolygon", "Non-Way members removed from multipolygon", nonWayMember);
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285 | GuiHelper.runInEDT(() -> new Notification(msg).setIcon(JOptionPane.WARNING_MESSAGE).show());
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286 | }
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287 | foundDiff |= merged.addAll(calculated.getMembers());
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288 | calculated.setMembers(null); // see #19885
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289 | if (!foundDiff) {
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290 | return Pair.create(old, old); // unchanged
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291 | }
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292 | Relation toModify = new Relation(old);
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293 | toModify.setMembers(new ArrayList<>(merged));
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294 | return Pair.create(old, toModify);
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295 | }
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296 |
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297 | /**
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298 | * Returns a {@link Pair} null and the newly created/modified multipolygon {@link Relation}.
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299 | * @param selectedWays selected ways
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300 | * @param showNotif if {@code true}, shows a notification if an error occurs
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301 | * @return pair of null and new multipolygon relation
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302 | */
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303 | public static Pair<Relation, Relation> createMultipolygonRelation(Collection<Way> selectedWays, boolean showNotif) {
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304 | MultipolygonTest mpTest = new MultipolygonTest();
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305 | Relation calculated = mpTest.makeFromWays(selectedWays);
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306 | calculated.setMembers(RelationSorter.sortMembersByConnectivity(calculated.getMembers()));
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307 | if (mpTest.getErrors().isEmpty())
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308 | return Pair.create(null, calculated);
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309 | if (showNotif) {
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310 | showErrors(mpTest.getErrors());
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311 | }
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312 | calculated.setMembers(null); // see #19885
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313 | return null; //could not make multipolygon.
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314 | }
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315 |
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316 | private static void showErrors(List<TestError> errors) {
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317 | if (!errors.isEmpty()) {
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318 | String errorMessages = errors.stream()
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319 | .map(TestError::getMessage)
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320 | .distinct()
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321 | .collect(Collectors.joining("\n"));
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322 | GuiHelper.runInEDT(() -> new Notification(errorMessages).setIcon(JOptionPane.INFORMATION_MESSAGE).show());
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323 | }
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324 | }
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325 |
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326 | /**
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327 | * Returns a {@link Pair} of a multipolygon creating/modifying {@link Command} as well as the multipolygon {@link Relation}.
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328 | * @param selectedWays selected ways
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329 | * @param selectedMultipolygonRelation selected multipolygon relation
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330 | * @return pair of command and multipolygon relation
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331 | */
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332 | public static Pair<SequenceCommand, Relation> createMultipolygonCommand(Collection<Way> selectedWays,
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333 | Relation selectedMultipolygonRelation) {
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334 |
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335 | final Pair<Relation, Relation> rr = selectedMultipolygonRelation == null
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336 | ? createMultipolygonRelation(selectedWays, true)
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337 | : updateMultipolygonRelation(selectedWays, selectedMultipolygonRelation);
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338 | if (rr == null) {
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339 | return null;
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340 | }
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341 | boolean changedMembers = rr.a != rr.b;
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342 | final Relation existingRelation = rr.a;
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343 | final Relation relation = changedMembers ? rr.b : rr.a;
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344 |
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345 | final List<Command> list = removeTagsFromWaysIfNeeded(relation);
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346 | final String commandName;
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347 | if (existingRelation == null) {
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348 | list.add(new AddCommand(selectedWays.iterator().next().getDataSet(), relation));
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349 | commandName = getName(false);
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350 | } else {
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351 | if (changedMembers) {
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352 | if (!relation.getKeys().equals(existingRelation.getKeys())) {
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353 | list.add(new ChangeCommand(existingRelation, relation));
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354 | } else {
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355 | list.add(new ChangeMembersCommand(existingRelation, new ArrayList<>(relation.getMembers())));
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356 | }
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357 | }
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358 | if (list.isEmpty()) {
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359 | MultipolygonTest mpTest = new MultipolygonTest();
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360 | mpTest.visit(existingRelation);
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361 | if (!mpTest.getErrors().isEmpty()) {
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362 | showErrors(mpTest.getErrors());
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363 | return null;
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364 | }
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365 |
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366 | GuiHelper.runInEDT(() -> new Notification(tr("Nothing changed")).setDuration(Notification.TIME_SHORT)
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367 | .setIcon(JOptionPane.INFORMATION_MESSAGE).show());
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368 | return null;
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369 | }
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370 | commandName = getName(true);
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371 | }
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372 | return Pair.create(new SequenceCommand(commandName, list), relation);
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373 | }
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374 |
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375 | /** Enable this action only if something is selected */
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376 | @Override
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377 | protected void updateEnabledState() {
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378 | updateEnabledStateOnCurrentSelection();
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379 | }
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380 |
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381 | /**
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382 | * Enable this action only if something is selected
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383 | *
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384 | * @param selection the current selection, gets tested for emptiness
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385 | */
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386 | @Override
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387 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
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388 | DataSet ds = getLayerManager().getEditDataSet();
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389 | if (ds == null || selection.isEmpty()) {
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390 | setEnabled(false);
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391 | } else if (update) {
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392 | setEnabled(getSelectedMultipolygonRelation(ds.getSelectedWays(), ds.getSelectedRelations()) != null);
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393 | } else {
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394 | setEnabled(!ds.getSelectedWays().isEmpty());
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395 | }
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396 | }
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397 |
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398 | private static final List<String> DEFAULT_LINEAR_TAGS = Arrays.asList("barrier", "fence_type", "source");
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399 |
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400 | /**
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401 | * This method removes tags/value pairs from inner and outer ways and put them on relation if necessary.
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402 | * Function was extended in reltoolbox plugin by Zverikk and copied back to the core
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403 | * @param relation the multipolygon style relation to process. If it not linked to a dataset, the tags might be
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404 | * modified, else the list of commands will contain a command to modify its tags
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405 | * @return a list of commands to execute
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406 | */
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407 | public static List<Command> removeTagsFromWaysIfNeeded(Relation relation) {
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408 | Map<String, String> values = new HashMap<>(relation.getKeys());
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409 |
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410 | List<Way> innerWays = new ArrayList<>();
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411 | List<Way> outerWays = new ArrayList<>();
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412 |
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413 | Set<String> conflictingKeys = new TreeSet<>();
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414 |
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415 | for (RelationMember m : relation.getMembers()) {
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416 |
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417 | if (m.hasRole() && "inner".equals(m.getRole()) && m.isWay() && m.getWay().hasKeys()) {
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418 | innerWays.add(m.getWay());
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419 | }
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420 |
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421 | if (m.hasRole() && "outer".equals(m.getRole()) && m.isWay() && m.getWay().hasKeys()) {
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422 | Way way = m.getWay();
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423 | outerWays.add(way);
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424 |
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425 | for (String key : way.keySet()) {
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426 | if (!values.containsKey(key)) { //relation values take precedence
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427 | values.put(key, way.get(key));
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428 | } else if (!values.get(key).equals(way.get(key))) {
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429 | conflictingKeys.add(key);
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430 | }
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431 | }
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432 | }
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433 | }
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434 |
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435 | // filter out empty key conflicts - we need second iteration
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436 | if (!Config.getPref().getBoolean("multipoly.alltags", false)) {
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437 | for (RelationMember m : relation.getMembers()) {
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438 | if (m.hasRole() && "outer".equals(m.getRole()) && m.isWay()) {
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439 | for (String key : values.keySet()) {
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440 | if (!m.getWay().hasKey(key) && !relation.hasKey(key)) {
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441 | conflictingKeys.add(key);
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442 | }
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443 | }
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444 | }
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445 | }
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446 | }
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447 |
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448 | for (String key : conflictingKeys) {
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449 | values.remove(key);
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450 | }
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451 |
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452 | for (String linearTag : Config.getPref().getList("multipoly.lineartagstokeep", DEFAULT_LINEAR_TAGS)) {
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453 | values.remove(linearTag);
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454 | }
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455 |
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456 | if ("coastline".equals(values.get("natural")))
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457 | values.remove("natural");
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458 |
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459 | values.put("area", OsmUtils.TRUE_VALUE);
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460 |
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461 | List<Command> commands = new ArrayList<>();
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462 | boolean moveTags = Config.getPref().getBoolean("multipoly.movetags", true);
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463 |
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464 | for (Entry<String, String> entry : values.entrySet()) {
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465 | String key = entry.getKey();
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466 | String value = entry.getValue();
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467 | List<OsmPrimitive> affectedWays = innerWays.stream().filter(way -> value.equals(way.get(key))).collect(Collectors.toList());
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468 |
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469 | if (moveTags) {
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470 | // remove duplicated tags from outer ways
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471 | for (Way way : outerWays) {
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472 | if (way.hasKey(key)) {
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473 | affectedWays.add(way);
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474 | }
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475 | }
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476 | }
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477 |
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478 | if (!affectedWays.isEmpty()) {
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479 | // reset key tag on affected ways
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480 | commands.add(new ChangePropertyCommand(affectedWays, key, null));
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481 | }
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482 | }
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483 |
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484 | values.remove("area");
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485 | if (moveTags && !values.isEmpty()) {
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486 | // add those tag values to the relation
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487 | Map<String, String> tagsToAdd = new HashMap<>();
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488 | for (Entry<String, String> entry : values.entrySet()) {
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489 | String key = entry.getKey();
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490 | if (!relation.hasKey(key)) {
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491 | if (relation.getDataSet() == null)
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492 | relation.put(key, entry.getValue());
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493 | else
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494 | tagsToAdd.put(key, entry.getValue());
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495 | }
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496 | }
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497 | if (!tagsToAdd.isEmpty()) {
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498 | commands.add(new ChangePropertyCommand(Collections.singleton(relation), tagsToAdd));
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499 | }
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500 | }
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501 |
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502 | return commands;
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503 | }
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504 | }
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