1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.dialogs.changeset;
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3 |
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4 | import java.util.ArrayList;
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5 | import java.util.Collection;
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6 | import java.util.Comparator;
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7 | import java.util.List;
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8 | import java.util.Set;
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9 | import java.util.stream.Collectors;
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10 | import java.util.stream.IntStream;
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11 |
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12 | import javax.swing.DefaultListModel;
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13 | import javax.swing.DefaultListSelectionModel;
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14 |
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15 | import org.openstreetmap.josm.data.osm.AbstractPrimitive;
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16 | import org.openstreetmap.josm.data.osm.Changeset;
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17 | import org.openstreetmap.josm.data.osm.ChangesetCache;
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18 | import org.openstreetmap.josm.data.osm.ChangesetCacheEvent;
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19 | import org.openstreetmap.josm.data.osm.ChangesetCacheListener;
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20 | import org.openstreetmap.josm.data.osm.DataSet;
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21 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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22 | import org.openstreetmap.josm.data.osm.Storage;
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23 | import org.openstreetmap.josm.gui.util.GuiHelper;
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24 | import org.openstreetmap.josm.gui.util.TableHelper;
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25 | import org.openstreetmap.josm.tools.Utils;
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26 |
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27 | /**
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28 | * This is the model that backs a list of changesets
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29 | */
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30 | public class ChangesetListModel extends DefaultListModel<Changeset> implements ChangesetCacheListener {
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31 | private final transient List<Changeset> data = new ArrayList<>();
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32 | private final transient Storage<Changeset> shownChangesets = new Storage<>(true);
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33 | private final DefaultListSelectionModel selectionModel;
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34 |
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35 | /**
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36 | * Creates a new {@link ChangesetListModel}
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37 | * @param selectionModel The selection model to use for this list
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38 | */
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39 | public ChangesetListModel(DefaultListSelectionModel selectionModel) {
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40 | this.selectionModel = selectionModel;
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41 | }
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42 |
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43 | /**
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44 | * Gets the list of changesets that are currently selected
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45 | * @return The selected changesets
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46 | */
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47 | public synchronized Set<Changeset> getSelectedChangesets() {
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48 | return IntStream.range(0, getSize()).filter(selectionModel::isSelectedIndex)
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49 | .mapToObj(data::get).collect(Collectors.toSet());
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50 | }
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51 |
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52 | /**
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53 | * Gets the IDs of the changesets that are selected
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54 | * @return The selected ids
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55 | */
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56 | public synchronized Set<Integer> getSelectedChangesetIds() {
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57 | return IntStream.range(0, getSize()).filter(selectionModel::isSelectedIndex)
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58 | .mapToObj(data::get).map(Changeset::getId).collect(Collectors.toSet());
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59 | }
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60 |
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61 | /**
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62 | * Sets the changesets to select
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63 | * @param changesets The changesets
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64 | */
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65 | public synchronized void setSelectedChangesets(Collection<Changeset> changesets) {
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66 | TableHelper.setSelectedIndices(selectionModel,
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67 | changesets != null ? changesets.stream().mapToInt(data::indexOf) : IntStream.empty());
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68 | }
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69 |
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70 | protected void setChangesets(Collection<Changeset> changesets) {
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71 | shownChangesets.clear();
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72 | if (changesets != null) {
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73 | shownChangesets.addAll(changesets);
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74 | }
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75 | updateModel();
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76 | }
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77 |
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78 | private synchronized void updateModel() {
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79 | Set<Changeset> sel = getSelectedChangesets();
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80 | data.clear();
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81 | data.addAll(shownChangesets);
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82 | ChangesetCache cache = ChangesetCache.getInstance();
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83 | for (Changeset cs: data) {
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84 | if (cache.contains(cs) && cache.get(cs.getId()) != cs) {
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85 | cs.mergeFrom(cache.get(cs.getId()));
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86 | }
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87 | }
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88 | sort();
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89 | fireIntervalAdded(this, 0, getSize());
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90 | setSelectedChangesets(sel);
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91 | }
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92 |
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93 | /**
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94 | * Loads this list with the given changesets
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95 | * @param ids The ids of the changesets to display
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96 | */
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97 | public void initFromChangesetIds(Collection<Integer> ids) {
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98 | if (Utils.isEmpty(ids)) {
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99 | setChangesets(null);
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100 | return;
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101 | }
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102 | Set<Changeset> changesets = ids.stream().mapToInt(id -> id)
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103 | .filter(id -> id > 0).mapToObj(Changeset::new).collect(Collectors.toSet());
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104 | setChangesets(changesets);
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105 | }
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106 |
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107 | /**
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108 | * Loads this list with the given changesets
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109 | * @param primitives The primitives of which the changesets should be displayed
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110 | */
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111 | public void initFromPrimitives(Collection<? extends OsmPrimitive> primitives) {
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112 | if (primitives == null) {
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113 | setChangesets(null);
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114 | return;
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115 | }
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116 | initFromChangesetIds(primitives.stream().map(AbstractPrimitive::getChangesetId).collect(Collectors.toList()));
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117 | }
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118 |
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119 | /**
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120 | * Loads this list with the given changesets
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121 | * @param ds The data set to get all changesets from
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122 | */
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123 | public void initFromDataSet(DataSet ds) {
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124 | if (ds == null) {
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125 | setChangesets(null);
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126 | return;
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127 | }
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128 | initFromChangesetIds(ds.allPrimitives().stream().map(AbstractPrimitive::getChangesetId).collect(Collectors.toList()));
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129 | }
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130 |
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131 | @Override
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132 | public synchronized Changeset getElementAt(int idx) {
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133 | return data.get(idx);
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134 | }
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135 |
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136 | @Override
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137 | public synchronized int getSize() {
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138 | return data.size();
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139 | }
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140 |
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141 | protected synchronized void sort() {
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142 | data.sort(Comparator.comparingInt(Changeset::getId).reversed());
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143 | }
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144 |
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145 | /**
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146 | * Replies true if there is at least one selected open changeset
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147 | *
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148 | * @return true if there is at least one selected open changeset
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149 | */
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150 | public boolean hasSelectedOpenChangesets() {
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151 | return !getSelectedOpenChangesets().isEmpty();
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152 | }
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153 |
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154 | /**
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155 | * Replies the selected open changesets
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156 | *
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157 | * @return the selected open changesets
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158 | */
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159 | public synchronized List<Changeset> getSelectedOpenChangesets() {
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160 | return IntStream.range(0, getSize())
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161 | .filter(selectionModel::isSelectedIndex)
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162 | .mapToObj(data::get)
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163 | .filter(Changeset::isOpen)
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164 | .collect(Collectors.toList());
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165 | }
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166 |
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167 | /* ---------------------------------------------------------------------------- */
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168 | /* Interface ChangesetCacheListener */
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169 | /* ---------------------------------------------------------------------------- */
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170 | @Override
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171 | public synchronized void changesetCacheUpdated(ChangesetCacheEvent event) {
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172 | Set<Changeset> sel = getSelectedChangesets();
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173 | for (Changeset cs: event.getAddedChangesets()) {
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174 | int idx = data.indexOf(cs);
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175 | if (idx >= 0 && data.get(idx) != cs) {
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176 | data.get(idx).mergeFrom(cs);
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177 | }
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178 | }
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179 | for (Changeset cs: event.getUpdatedChangesets()) {
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180 | int idx = data.indexOf(cs);
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181 | if (idx >= 0 && data.get(idx) != cs) {
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182 | data.get(idx).mergeFrom(cs);
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183 | }
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184 | }
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185 | for (Changeset cs: event.getRemovedChangesets()) {
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186 | int idx = data.indexOf(cs);
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187 | if (idx >= 0) {
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188 | // replace with an incomplete changeset
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189 | data.set(idx, new Changeset(cs.getId()));
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190 | }
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191 | }
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192 | GuiHelper.runInEDT(() -> {
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193 | fireContentsChanged(this, 0, getSize());
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194 | setSelectedChangesets(sel);
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195 | });
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196 | }
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197 | }
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