1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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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.gui.help.HelpUtil.ht;
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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.event.ActionEvent;
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9 | import java.awt.event.KeyEvent;
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10 | import java.util.ArrayList;
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11 | import java.util.Arrays;
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12 | import java.util.Collection;
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13 | import java.util.Collections;
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14 | import java.util.HashSet;
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15 | import java.util.Iterator;
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16 | import java.util.LinkedList;
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17 | import java.util.List;
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18 | import java.util.Set;
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19 |
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20 | import javax.swing.JOptionPane;
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21 |
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22 | import org.openstreetmap.josm.Main;
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23 | import org.openstreetmap.josm.command.AddCommand;
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24 | import org.openstreetmap.josm.command.ChangeCommand;
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25 | import org.openstreetmap.josm.command.Command;
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26 | import org.openstreetmap.josm.command.SequenceCommand;
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27 | import org.openstreetmap.josm.data.osm.Node;
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28 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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29 | import org.openstreetmap.josm.data.osm.PrimitiveId;
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30 | import org.openstreetmap.josm.data.osm.Relation;
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31 | import org.openstreetmap.josm.data.osm.RelationMember;
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32 | import org.openstreetmap.josm.data.osm.Way;
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33 | import org.openstreetmap.josm.gui.DefaultNameFormatter;
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34 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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35 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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36 | import org.openstreetmap.josm.tools.Shortcut;
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37 |
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38 | /**
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39 | * Splits a way into multiple ways (all identical except for their node list).
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40 | *
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41 | * Ways are just split at the selected nodes. The nodes remain in their
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42 | * original order. Selected nodes at the end of a way are ignored.
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43 | */
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44 |
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45 | public class SplitWayAction extends JosmAction {
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46 |
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47 | /**
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48 | * Represents the result of a {@link SplitWayAction}
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49 | * @see SplitWayAction#splitWay
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50 | * @see SplitWayAction#split
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51 | */
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52 | public static class SplitWayResult {
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53 | private final Command command;
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54 | private final List<? extends PrimitiveId> newSelection;
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55 | private Way originalWay;
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56 | private List<Way> newWays;
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57 |
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58 | /**
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59 | * @param command The command to be performed to split the way (which is saved for later retrieval by the {@link #getCommand} method)
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60 | * @param newSelection The new list of selected primitives ids (which is saved for later retrieval by the {@link #getNewSelection} method)
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61 | * @param originalWay The original way being split (which is saved for later retrieval by the {@link #getOriginalWay} method)
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62 | * @param newWays The resulting new ways (which is saved for later retrieval by the {@link #getOriginalWay} method)
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63 | */
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64 | public SplitWayResult(Command command, List<? extends PrimitiveId> newSelection, Way originalWay, List<Way> newWays) {
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65 | this.command = command;
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66 | this.newSelection = newSelection;
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67 | this.originalWay = originalWay;
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68 | this.newWays = newWays;
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69 | }
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70 |
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71 | /**
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72 | * Replies the command to be performed to split the way
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73 | * @return The command to be performed to split the way
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74 | */
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75 | public Command getCommand() {
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76 | return command;
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77 | }
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78 |
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79 | /**
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80 | * Replies the new list of selected primitives ids
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81 | * @return The new list of selected primitives ids
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82 | */
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83 | public List<? extends PrimitiveId> getNewSelection() {
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84 | return newSelection;
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85 | }
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86 |
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87 | /**
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88 | * Replies the original way being split
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89 | * @return The original way being split
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90 | */
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91 | public Way getOriginalWay() {
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92 | return originalWay;
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93 | }
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94 |
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95 | /**
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96 | * Replies the resulting new ways
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97 | * @return The resulting new ways
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98 | */
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99 | public List<Way> getNewWays() {
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100 | return newWays;
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101 | }
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102 | }
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103 |
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104 | /**
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105 | * Create a new SplitWayAction.
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106 | */
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107 | public SplitWayAction() {
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108 | super(tr("Split Way"), "splitway", tr("Split a way at the selected node."),
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109 | Shortcut.registerShortcut("tools:splitway", tr("Tool: {0}", tr("Split Way")), KeyEvent.VK_P, Shortcut.DIRECT), true);
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110 | putValue("help", ht("/Action/SplitWay"));
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111 | }
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112 |
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113 | /**
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114 | * Called when the action is executed.
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115 | *
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116 | * This method performs an expensive check whether the selection clearly defines one
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117 | * of the split actions outlined above, and if yes, calls the splitWay method.
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118 | */
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119 | public void actionPerformed(ActionEvent e) {
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120 |
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121 | Collection<OsmPrimitive> selection = getCurrentDataSet().getSelected();
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122 |
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123 | List<Node> selectedNodes = OsmPrimitive.getFilteredList(selection, Node.class);
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124 | List<Way> selectedWays = OsmPrimitive.getFilteredList(selection, Way.class);
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125 | List<Relation> selectedRelations = OsmPrimitive.getFilteredList(selection, Relation.class);
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126 | List<Way> applicableWays = getApplicableWays(selectedWays, selectedNodes);
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127 |
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128 | if (applicableWays == null) {
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129 | JOptionPane.showMessageDialog(
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130 | Main.parent,
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131 | tr("The current selection cannot be used for splitting - no node is selected."),
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132 | tr("Warning"),
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133 | JOptionPane.WARNING_MESSAGE);
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134 | return;
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135 | } else if (applicableWays.isEmpty()) {
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136 | JOptionPane.showMessageDialog(Main.parent,
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137 | tr("The selected nodes do not share the same way."),
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138 | tr("Warning"),
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139 | JOptionPane.WARNING_MESSAGE);
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140 | return;
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141 | }
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142 |
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143 | // If several ways have been found, remove ways that doesn't have selected node in the middle
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144 | if (applicableWays.size() > 1) {
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145 | WAY_LOOP:
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146 | for (Iterator<Way> it = applicableWays.iterator(); it.hasNext();) {
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147 | Way w = it.next();
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148 | for (Node n : selectedNodes) {
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149 | if (!w.isInnerNode(n)) {
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150 | it.remove();
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151 | continue WAY_LOOP;
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152 | }
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153 | }
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154 | }
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155 | }
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156 |
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157 | if (applicableWays.isEmpty()) {
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158 | JOptionPane.showMessageDialog(Main.parent,
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159 | trn("The selected node is not in the middle of any way.",
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160 | "The selected nodes are not in the middle of any way.",
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161 | selectedNodes.size()),
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162 | tr("Warning"),
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163 | JOptionPane.WARNING_MESSAGE);
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164 | return;
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165 | } else if (applicableWays.size() > 1) {
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166 | JOptionPane.showMessageDialog(Main.parent,
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167 | trn("There is more than one way using the node you selected. Please select the way also.",
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168 | "There is more than one way using the nodes you selected. Please select the way also.",
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169 | selectedNodes.size()),
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170 | tr("Warning"),
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171 | JOptionPane.WARNING_MESSAGE);
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172 | return;
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173 | }
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174 |
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175 | // Finally, applicableWays contains only one perfect way
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176 | Way selectedWay = applicableWays.get(0);
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177 |
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178 | List<List<Node>> wayChunks = buildSplitChunks(selectedWay, selectedNodes);
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179 | if (wayChunks != null) {
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180 | List<OsmPrimitive> sel = new ArrayList<OsmPrimitive>(selectedWays.size() + selectedRelations.size());
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181 | sel.addAll(selectedWays);
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182 | sel.addAll(selectedRelations);
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183 | SplitWayResult result = splitWay(getEditLayer(),selectedWay, wayChunks, sel);
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184 | Main.main.undoRedo.add(result.getCommand());
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185 | getCurrentDataSet().setSelected(result.getNewSelection());
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186 | }
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187 | }
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188 |
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189 | private List<Way> getApplicableWays(List<Way> selectedWays, List<Node> selectedNodes) {
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190 | if (selectedNodes.isEmpty())
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191 | return null;
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192 |
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193 | // Special case - one of the selected ways touches (not cross) way that we want to split
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194 | if (selectedNodes.size() == 1) {
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195 | Node n = selectedNodes.get(0);
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196 | List<Way> referedWays = OsmPrimitive.getFilteredList(n.getReferrers(), Way.class);
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197 | Way inTheMiddle = null;
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198 | boolean foundSelected = false;
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199 | for (Way w: referedWays) {
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200 | if (selectedWays.contains(w)) {
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201 | foundSelected = true;
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202 | }
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203 | if (w.getNode(0) != n && w.getNode(w.getNodesCount() - 1) != n) {
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204 | if (inTheMiddle == null) {
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205 | inTheMiddle = w;
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206 | } else {
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207 | inTheMiddle = null;
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208 | break;
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209 | }
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210 | }
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211 | }
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212 | if (foundSelected && inTheMiddle != null)
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213 | return Collections.singletonList(inTheMiddle);
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214 | }
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215 |
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216 | // List of ways shared by all nodes
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217 | List<Way> result = new ArrayList<Way>(OsmPrimitive.getFilteredList(selectedNodes.get(0).getReferrers(), Way.class));
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218 | for (int i=1; i<selectedNodes.size(); i++) {
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219 | List<OsmPrimitive> ref = selectedNodes.get(i).getReferrers();
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220 | for (Iterator<Way> it = result.iterator(); it.hasNext(); ) {
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221 | if (!ref.contains(it.next())) {
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222 | it.remove();
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223 | }
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224 | }
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225 | }
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226 |
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227 | // Remove broken ways
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228 | for (Iterator<Way> it = result.iterator(); it.hasNext(); ) {
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229 | if (it.next().getNodesCount() <= 2) {
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230 | it.remove();
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231 | }
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232 | }
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233 |
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234 | if (selectedWays.isEmpty())
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235 | return result;
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236 | else {
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237 | // Return only selected ways
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238 | for (Iterator<Way> it = result.iterator(); it.hasNext(); ) {
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239 | if (!selectedWays.contains(it.next())) {
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240 | it.remove();
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241 | }
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242 | }
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243 | return result;
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244 | }
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245 | }
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246 |
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247 | /**
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248 | * Splits the nodes of {@code wayToSplit} into a list of node sequences
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249 | * which are separated at the nodes in {@code splitPoints}.
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250 | *
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251 | * This method displays warning messages if {@code wayToSplit} and/or
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252 | * {@code splitPoints} aren't consistent.
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253 | *
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254 | * Returns null, if building the split chunks fails.
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255 | *
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256 | * @param wayToSplit the way to split. Must not be null.
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257 | * @param splitPoints the nodes where the way is split. Must not be null.
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258 | * @return the list of chunks
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259 | */
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260 | static public List<List<Node>> buildSplitChunks(Way wayToSplit, List<Node> splitPoints){
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261 | CheckParameterUtil.ensureParameterNotNull(wayToSplit, "wayToSplit");
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262 | CheckParameterUtil.ensureParameterNotNull(splitPoints, "splitPoints");
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263 |
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264 | Set<Node> nodeSet = new HashSet<Node>(splitPoints);
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265 | List<List<Node>> wayChunks = new LinkedList<List<Node>>();
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266 | List<Node> currentWayChunk = new ArrayList<Node>();
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267 | wayChunks.add(currentWayChunk);
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268 |
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269 | Iterator<Node> it = wayToSplit.getNodes().iterator();
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270 | while (it.hasNext()) {
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271 | Node currentNode = it.next();
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272 | boolean atEndOfWay = currentWayChunk.isEmpty() || !it.hasNext();
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273 | currentWayChunk.add(currentNode);
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274 | if (nodeSet.contains(currentNode) && !atEndOfWay) {
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275 | currentWayChunk = new ArrayList<Node>();
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276 | currentWayChunk.add(currentNode);
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277 | wayChunks.add(currentWayChunk);
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278 | }
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279 | }
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280 |
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281 | // Handle circular ways specially.
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282 | // If you split at a circular way at two nodes, you just want to split
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283 | // it at these points, not also at the former endpoint.
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284 | // So if the last node is the same first node, join the last and the
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285 | // first way chunk.
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286 | List<Node> lastWayChunk = wayChunks.get(wayChunks.size() - 1);
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287 | if (wayChunks.size() >= 2
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288 | && wayChunks.get(0).get(0) == lastWayChunk.get(lastWayChunk.size() - 1)
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289 | && !nodeSet.contains(wayChunks.get(0).get(0))) {
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290 | if (wayChunks.size() == 2) {
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291 | JOptionPane.showMessageDialog(
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292 | Main.parent,
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293 | tr("You must select two or more nodes to split a circular way."),
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294 | tr("Warning"),
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295 | JOptionPane.WARNING_MESSAGE);
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296 | return null;
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297 | }
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298 | lastWayChunk.remove(lastWayChunk.size() - 1);
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299 | lastWayChunk.addAll(wayChunks.get(0));
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300 | wayChunks.remove(wayChunks.size() - 1);
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301 | wayChunks.set(0, lastWayChunk);
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302 | }
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303 |
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304 | if (wayChunks.size() < 2) {
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305 | if (wayChunks.get(0).get(0) == wayChunks.get(0).get(wayChunks.get(0).size() - 1)) {
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306 | JOptionPane.showMessageDialog(
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307 | Main.parent,
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308 | tr("You must select two or more nodes to split a circular way."),
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309 | tr("Warning"),
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310 | JOptionPane.WARNING_MESSAGE);
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311 | } else {
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312 | JOptionPane.showMessageDialog(
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313 | Main.parent,
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314 | tr("The way cannot be split at the selected nodes. (Hint: Select nodes in the middle of the way.)"),
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315 | tr("Warning"),
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316 | JOptionPane.WARNING_MESSAGE);
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317 | }
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318 | return null;
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319 | }
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320 | return wayChunks;
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321 | }
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322 |
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323 | /**
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324 | * Splits the way {@code way} into chunks of {@code wayChunks} and replies
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325 | * the result of this process in an instance of {@link SplitWayResult}.
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326 | *
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327 | * Note that changes are not applied to the data yet. You have to
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328 | * submit the command in {@link SplitWayResult#getCommand()} first,
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329 | * i.e. {@code Main.main.undoredo.add(result.getCommand())}.
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330 | *
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331 | * @param layer the layer which the way belongs to. Must not be null.
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332 | * @param way the way to split. Must not be null.
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333 | * @param wayChunks the list of way chunks into the way is split. Must not be null.
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334 | * @param selection The list of currently selected primitives
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335 | * @return the result from the split operation
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336 | */
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337 | public static SplitWayResult splitWay(OsmDataLayer layer, Way way, List<List<Node>> wayChunks, Collection<? extends OsmPrimitive> selection) {
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338 | // build a list of commands, and also a new selection list
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339 | Collection<Command> commandList = new ArrayList<Command>(wayChunks.size());
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340 | List<OsmPrimitive> newSelection = new ArrayList<OsmPrimitive>(selection.size() + wayChunks.size());
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341 | newSelection.addAll(selection);
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342 |
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343 | Iterator<List<Node>> chunkIt = wayChunks.iterator();
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344 | Collection<String> nowarnroles = Main.pref.getCollection("way.split.roles.nowarn",
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345 | Arrays.asList("outer", "inner", "forward", "backward", "north", "south", "east", "west"));
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346 |
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347 | // First, change the original way
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348 | Way changedWay = new Way(way);
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349 | changedWay.setNodes(chunkIt.next());
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350 | commandList.add(new ChangeCommand(way, changedWay));
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351 | if (!newSelection.contains(way)) {
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352 | newSelection.add(way);
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353 | }
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354 |
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355 | List<Way> newWays = new ArrayList<Way>();
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356 | // Second, create new ways
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357 | while (chunkIt.hasNext()) {
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358 | Way wayToAdd = new Way();
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359 | wayToAdd.setKeys(way.getKeys());
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360 | newWays.add(wayToAdd);
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361 | wayToAdd.setNodes(chunkIt.next());
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362 | commandList.add(new AddCommand(layer,wayToAdd));
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363 | newSelection.add(wayToAdd);
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364 |
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365 | }
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366 | boolean warnmerole = false;
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367 | boolean warnme = false;
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368 | // now copy all relations to new way also
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369 |
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370 | for (Relation r : OsmPrimitive.getFilteredList(way.getReferrers(), Relation.class)) {
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371 | if (!r.isUsable()) {
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372 | continue;
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373 | }
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374 | Relation c = null;
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375 | String type = r.get("type");
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376 | if (type == null) {
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377 | type = "";
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378 | }
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379 |
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380 | int i_c = 0, i_r = 0;
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381 | List<RelationMember> relationMembers = r.getMembers();
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382 | for (RelationMember rm: relationMembers) {
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383 | if (rm.isWay() && rm.getMember() == way) {
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384 | boolean insert = true;
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385 | if ("restriction".equals(type))
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386 | {
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387 | /* this code assumes the restriction is correct. No real error checking done */
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388 | String role = rm.getRole();
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389 | if("from".equals(role) || "to".equals(role))
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390 | {
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391 | OsmPrimitive via = null;
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392 | for (RelationMember rmv : r.getMembers()) {
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393 | if("via".equals(rmv.getRole())){
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394 | via = rmv.getMember();
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395 | }
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396 | }
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397 | List<Node> nodes = new ArrayList<Node>();
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398 | if(via != null) {
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399 | if(via instanceof Node) {
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400 | nodes.add((Node)via);
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401 | } else if(via instanceof Way) {
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402 | nodes.add(((Way)via).lastNode());
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403 | nodes.add(((Way)via).firstNode());
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404 | }
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405 | }
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406 | Way res = null;
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407 | for(Node n : nodes) {
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408 | if(changedWay.isFirstLastNode(n)) {
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409 | res = way;
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410 | }
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411 | }
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412 | if(res == null)
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413 | {
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414 | for (Way wayToAdd : newWays) {
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415 | for(Node n : nodes) {
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416 | if(wayToAdd.isFirstLastNode(n)) {
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417 | res = wayToAdd;
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418 | }
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419 | }
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420 | }
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421 | if(res != null)
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422 | {
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423 | if (c == null) {
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424 | c = new Relation(r);
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425 | }
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426 | c.addMember(new RelationMember(role, res));
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427 | c.removeMembersFor(way);
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428 | insert = false;
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429 | }
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430 | } else {
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431 | insert = false;
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432 | }
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433 | }
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434 | else if(!"via".equals(role)) {
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435 | warnme = true;
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436 | }
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437 | }
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438 | else if (!("route".equals(type)) && !("multipolygon".equals(type))) {
|
---|
439 | warnme = true;
|
---|
440 | }
|
---|
441 | if (c == null) {
|
---|
442 | c = new Relation(r);
|
---|
443 | }
|
---|
444 |
|
---|
445 | if(insert)
|
---|
446 | {
|
---|
447 | if (rm.hasRole() && !nowarnroles.contains(rm.getRole())) {
|
---|
448 | warnmerole = true;
|
---|
449 | }
|
---|
450 |
|
---|
451 | Boolean backwards = null;
|
---|
452 | int k = 1;
|
---|
453 | while (i_r - k >= 0 || i_r + k < relationMembers.size()) {
|
---|
454 | if ((i_r - k >= 0) && relationMembers.get(i_r - k).isWay()){
|
---|
455 | Way w = relationMembers.get(i_r - k).getWay();
|
---|
456 | if ((w.lastNode() == way.firstNode()) || w.firstNode() == way.firstNode()) {
|
---|
457 | backwards = false;
|
---|
458 | } else if ((w.firstNode() == way.lastNode()) || w.lastNode() == way.lastNode()) {
|
---|
459 | backwards = true;
|
---|
460 | }
|
---|
461 | break;
|
---|
462 | }
|
---|
463 | if ((i_r + k < relationMembers.size()) && relationMembers.get(i_r + k).isWay()){
|
---|
464 | Way w = relationMembers.get(i_r + k).getWay();
|
---|
465 | if ((w.lastNode() == way.firstNode()) || w.firstNode() == way.firstNode()) {
|
---|
466 | backwards = true;
|
---|
467 | } else if ((w.firstNode() == way.lastNode()) || w.lastNode() == way.lastNode()) {
|
---|
468 | backwards = false;
|
---|
469 | }
|
---|
470 | break;
|
---|
471 | }
|
---|
472 | k++;
|
---|
473 | }
|
---|
474 |
|
---|
475 | int j = i_c;
|
---|
476 | for (Way wayToAdd : newWays) {
|
---|
477 | RelationMember em = new RelationMember(rm.getRole(), wayToAdd);
|
---|
478 | j++;
|
---|
479 | if ((backwards != null) && backwards) {
|
---|
480 | c.addMember(i_c, em);
|
---|
481 | } else {
|
---|
482 | c.addMember(j, em);
|
---|
483 | }
|
---|
484 | }
|
---|
485 | i_c = j;
|
---|
486 | }
|
---|
487 | }
|
---|
488 | i_c++; i_r++;
|
---|
489 | }
|
---|
490 |
|
---|
491 | if (c != null) {
|
---|
492 | commandList.add(new ChangeCommand(layer,r, c));
|
---|
493 | }
|
---|
494 | }
|
---|
495 | if (warnmerole) {
|
---|
496 | JOptionPane.showMessageDialog(
|
---|
497 | Main.parent,
|
---|
498 | tr("<html>A role based relation membership was copied to all new ways.<br>You should verify this and correct it when necessary.</html>"),
|
---|
499 | tr("Warning"),
|
---|
500 | JOptionPane.WARNING_MESSAGE);
|
---|
501 | } else if (warnme) {
|
---|
502 | JOptionPane.showMessageDialog(
|
---|
503 | Main.parent,
|
---|
504 | tr("<html>A relation membership was copied to all new ways.<br>You should verify this and correct it when necessary.</html>"),
|
---|
505 | tr("Warning"),
|
---|
506 | JOptionPane.WARNING_MESSAGE);
|
---|
507 | }
|
---|
508 |
|
---|
509 | return new SplitWayResult(
|
---|
510 | new SequenceCommand(
|
---|
511 | tr("Split way {0} into {1} parts", way.getDisplayName(DefaultNameFormatter.getInstance()),wayChunks.size()),
|
---|
512 | commandList
|
---|
513 | ),
|
---|
514 | newSelection,
|
---|
515 | way,
|
---|
516 | newWays
|
---|
517 | );
|
---|
518 | }
|
---|
519 |
|
---|
520 | /**
|
---|
521 | * Splits the way {@code way} at the nodes in {@code atNodes} and replies
|
---|
522 | * the result of this process in an instance of {@link SplitWayResult}.
|
---|
523 | *
|
---|
524 | * Note that changes are not applied to the data yet. You have to
|
---|
525 | * submit the command in {@link SplitWayResult#getCommand()} first,
|
---|
526 | * i.e. {@code Main.main.undoredo.add(result.getCommand())}.
|
---|
527 | *
|
---|
528 | * Replies null if the way couldn't be split at the given nodes.
|
---|
529 | *
|
---|
530 | * @param layer the layer which the way belongs to. Must not be null.
|
---|
531 | * @param way the way to split. Must not be null.
|
---|
532 | * @param atNodes the list of nodes where the way is split. Must not be null.
|
---|
533 | * @param selection The list of currently selected primitives
|
---|
534 | * @return the result from the split operation
|
---|
535 | */
|
---|
536 | static public SplitWayResult split(OsmDataLayer layer, Way way, List<Node> atNodes, Collection<? extends OsmPrimitive> selection) {
|
---|
537 | List<List<Node>> chunks = buildSplitChunks(way, atNodes);
|
---|
538 | if (chunks == null) return null;
|
---|
539 | return splitWay(layer,way, chunks, selection);
|
---|
540 | }
|
---|
541 |
|
---|
542 | @Override
|
---|
543 | protected void updateEnabledState() {
|
---|
544 | if (getCurrentDataSet() == null) {
|
---|
545 | setEnabled(false);
|
---|
546 | } else {
|
---|
547 | updateEnabledState(getCurrentDataSet().getSelected());
|
---|
548 | }
|
---|
549 | }
|
---|
550 |
|
---|
551 | @Override
|
---|
552 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
|
---|
553 | if (selection == null) {
|
---|
554 | setEnabled(false);
|
---|
555 | return;
|
---|
556 | }
|
---|
557 | for (OsmPrimitive primitive: selection) {
|
---|
558 | if (primitive instanceof Node) {
|
---|
559 | setEnabled(true); // Selection still can be wrong, but let SplitWayAction process and tell user what's wrong
|
---|
560 | return;
|
---|
561 | }
|
---|
562 | }
|
---|
563 | setEnabled(false);
|
---|
564 | }
|
---|
565 | }
|
---|