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 |
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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.Collection;
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11 | import java.util.Collections;
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12 | import java.util.LinkedList;
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13 | import java.util.List;
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14 |
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15 | import javax.swing.JOptionPane;
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16 |
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17 | import org.openstreetmap.josm.Main;
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18 | import org.openstreetmap.josm.command.ChangeCommand;
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19 | import org.openstreetmap.josm.command.Command;
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20 | import org.openstreetmap.josm.command.SequenceCommand;
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21 | import org.openstreetmap.josm.corrector.ReverseWayTagCorrector;
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22 | import org.openstreetmap.josm.corrector.UserCancelException;
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23 | import org.openstreetmap.josm.data.osm.Node;
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24 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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25 | import org.openstreetmap.josm.data.osm.Way;
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26 | import org.openstreetmap.josm.tools.Shortcut;
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27 | import org.openstreetmap.josm.tools.Utils;
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28 |
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29 | public final class ReverseWayAction extends JosmAction {
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30 |
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31 | public static class ReverseWayResult {
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32 | private Way newWay;
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33 | private Collection<Command> tagCorrectionCommands;
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34 | private Command reverseCommand;
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35 |
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36 | public ReverseWayResult(Way newWay, Collection<Command> tagCorrectionCommands, Command reverseCommand) {
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37 | this.newWay = newWay;
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38 | this.tagCorrectionCommands = tagCorrectionCommands;
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39 | this.reverseCommand = reverseCommand;
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40 | }
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41 |
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42 | public Way getNewWay() {
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43 | return newWay;
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44 | }
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45 |
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46 | public Collection<Command> getCommands() {
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47 | List<Command> c = new ArrayList<Command>();
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48 | c.addAll(tagCorrectionCommands);
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49 | c.add(reverseCommand);
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50 | return c;
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51 | }
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52 |
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53 | public Command getAsSequenceCommand() {
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54 | return new SequenceCommand(tr("Reverse way"), getCommands());
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55 | }
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56 |
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57 | public Command getReverseCommand() {
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58 | return reverseCommand;
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59 | }
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60 |
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61 | public Collection<Command> getTagCorrectionCommands() {
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62 | return tagCorrectionCommands;
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63 | }
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64 | }
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65 |
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66 | public ReverseWayAction() {
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67 | super(tr("Reverse Ways"), "wayflip", tr("Reverse the direction of all selected ways."),
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68 | Shortcut.registerShortcut("tools:reverse", tr("Tool: {0}", tr("Reverse Ways")), KeyEvent.VK_R, Shortcut.GROUP_EDIT), true);
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69 | putValue("help", ht("/Action/ReverseWays"));
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70 | }
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71 |
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72 | public void actionPerformed(ActionEvent e) {
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73 | if (! isEnabled())
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74 | return;
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75 | if (getCurrentDataSet() == null)
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76 | return;
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77 |
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78 | final Collection<Way> sel = getCurrentDataSet().getSelectedWays();
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79 | if (sel.isEmpty()) {
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80 | JOptionPane.showMessageDialog(
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81 | Main.parent,
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82 | tr("Please select at least one way."),
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83 | tr("Information"),
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84 | JOptionPane.INFORMATION_MESSAGE
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85 | );
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86 | return;
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87 | }
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88 |
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89 | boolean propertiesUpdated = false;
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90 | Collection<Command> c = new LinkedList<Command>();
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91 | for (Way w : sel) {
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92 | ReverseWayResult revResult;
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93 | try {
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94 | revResult = reverseWay(w);
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95 | } catch (UserCancelException ex) {
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96 | return;
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97 | }
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98 | c.addAll(revResult.getCommands());
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99 | propertiesUpdated |= !revResult.getTagCorrectionCommands().isEmpty();
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100 | }
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101 | Main.main.undoRedo.add(new SequenceCommand(tr("Reverse ways"), c));
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102 | if (propertiesUpdated) {
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103 | getCurrentDataSet().fireSelectionChanged();
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104 | }
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105 | Main.map.repaint();
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106 | }
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107 |
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108 | /**
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109 | * @param w the way
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110 | * @return the reverse command and the tag correction commands
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111 | */
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112 | public static ReverseWayResult reverseWay(Way w) throws UserCancelException {
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113 | Way wnew = new Way(w);
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114 | List<Node> nodesCopy = wnew.getNodes();
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115 | Collections.reverse(nodesCopy);
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116 | wnew.setNodes(nodesCopy);
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117 |
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118 | Collection<Command> corrCmds = Collections.<Command>emptyList();
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119 | if (Main.pref.getBoolean("tag-correction.reverse-way", true)) {
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120 | corrCmds = (new ReverseWayTagCorrector()).execute(w, wnew);
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121 | }
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122 | return new ReverseWayResult(wnew, corrCmds, new ChangeCommand(w, wnew));
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123 | }
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124 |
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125 | protected int getNumWaysInSelection() {
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126 | if (getCurrentDataSet() == null) return 0;
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127 | int ret = 0;
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128 | for (OsmPrimitive primitive : getCurrentDataSet().getSelected()) {
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129 | if (primitive instanceof Way) {
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130 | ret++;
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131 | }
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132 | }
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133 | return ret;
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134 | }
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135 |
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136 | @Override
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137 | protected void updateEnabledState() {
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138 | if (getCurrentDataSet() == null) {
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139 | setEnabled(false);
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140 | } else {
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141 | updateEnabledState(getCurrentDataSet().getSelected());
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142 | }
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143 | }
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144 |
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145 | @Override
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146 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
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147 | setEnabled(Utils.exists(selection, OsmPrimitive.wayPredicate));
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148 | }
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149 | }
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