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.beans.PropertyChangeListener;
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5 | import java.beans.PropertyChangeSupport;
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6 | import java.util.ArrayList;
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7 | import java.util.Collection;
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8 | import java.util.Comparator;
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9 | import java.util.HashSet;
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10 | import java.util.List;
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11 | import java.util.Set;
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12 |
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13 | import javax.swing.DefaultListSelectionModel;
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14 | import javax.swing.table.AbstractTableModel;
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15 |
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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.gui.util.GuiHelper;
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21 |
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22 | /**
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23 | * This is the model for the changeset cache manager dialog.
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24 | */
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25 | public class ChangesetCacheManagerModel extends AbstractTableModel implements ChangesetCacheListener {
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26 |
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27 | /** the name of the property for the currently selected changeset in the detail view */
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28 | public static final String CHANGESET_IN_DETAIL_VIEW_PROP = ChangesetCacheManagerModel.class.getName() + ".changesetInDetailView";
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29 |
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30 | private final transient List<Changeset> data = new ArrayList<>();
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31 | private final DefaultListSelectionModel selectionModel;
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32 | private transient Changeset changesetInDetailView;
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33 | private final PropertyChangeSupport support = new PropertyChangeSupport(this);
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34 |
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35 | /**
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36 | * Creates a new ChangesetCacheManagerModel that is based on the selectionModel
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37 | * @param selectionModel A new selection model that should be used.
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38 | */
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39 | public ChangesetCacheManagerModel(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 | * Adds a property change listener to this model.
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45 | * @param listener The listener
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46 | */
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47 | public void addPropertyChangeListener(PropertyChangeListener listener) {
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48 | support.addPropertyChangeListener(listener);
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49 | }
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50 |
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51 | /**
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52 | * Removes a property change listener from this model.
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53 | * @param listener The listener
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54 | */
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55 | public void removePropertyChangeListener(PropertyChangeListener listener) {
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56 | support.removePropertyChangeListener(listener);
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57 | }
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58 |
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59 | /**
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60 | * Sets the changeset currently displayed in the detail view. Fires a property change event
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61 | * for the property {@link #CHANGESET_IN_DETAIL_VIEW_PROP} if necessary.
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62 | *
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63 | * @param cs the changeset currently displayed in the detail view.
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64 | */
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65 | public void setChangesetInDetailView(Changeset cs) {
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66 | Changeset oldValue = changesetInDetailView;
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67 | changesetInDetailView = cs;
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68 | if (oldValue != cs) {
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69 | support.firePropertyChange(CHANGESET_IN_DETAIL_VIEW_PROP, oldValue, changesetInDetailView);
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70 | }
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71 | }
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72 |
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73 | /**
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74 | * Replies true if there is at least one selected changeset
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75 | *
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76 | * @return true if there is at least one selected changeset
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77 | */
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78 | public boolean hasSelectedChangesets() {
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79 | return selectionModel.getMinSelectionIndex() >= 0;
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80 | }
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81 |
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82 | /**
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83 | * Replies the list of selected changesets
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84 | *
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85 | * @return the list of selected changesets
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86 | */
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87 | public List<Changeset> getSelectedChangesets() {
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88 | List<Changeset> ret = new ArrayList<>();
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89 | for (int i = 0; i < data.size(); i++) {
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90 | Changeset cs = data.get(i);
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91 | if (selectionModel.isSelectedIndex(i)) {
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92 | ret.add(cs);
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93 | }
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94 | }
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95 | return ret;
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96 | }
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97 |
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98 | /**
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99 | * Replies a set of ids of the selected changesets
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100 | *
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101 | * @return a set of ids of the selected changesets
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102 | */
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103 | public Set<Integer> getSelectedChangesetIds() {
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104 | Set<Integer> ret = new HashSet<>();
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105 | for (Changeset cs: getSelectedChangesets()) {
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106 | ret.add(cs.getId());
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107 | }
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108 | return ret;
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109 | }
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110 |
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111 | /**
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112 | * Selects the changesets in <code>selected</code>.
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113 | *
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114 | * @param selected the collection of changesets to select. Ignored if empty.
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115 | */
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116 | public void setSelectedChangesets(Collection<Changeset> selected) {
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117 | selectionModel.setValueIsAdjusting(true);
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118 | selectionModel.clearSelection();
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119 | if (selected != null) {
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120 | for (Changeset cs: selected) {
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121 | final int idx = data.indexOf(cs);
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122 | if (idx >= 0) {
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123 | selectionModel.addSelectionInterval(idx, idx);
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124 | }
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125 | }
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126 | }
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127 | GuiHelper.runInEDTAndWait(() -> selectionModel.setValueIsAdjusting(false));
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128 | }
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129 |
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130 | @Override
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131 | public int getColumnCount() {
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132 | return 5;
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133 | }
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134 |
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135 | @Override
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136 | public int getRowCount() {
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137 | return data.size();
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138 | }
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139 |
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140 | @Override
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141 | public Changeset getValueAt(int row, int column) {
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142 | return data.get(row);
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143 | }
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144 |
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145 | /**
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146 | * Initializes the data that is displayed using the changeset cache.
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147 | */
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148 | public void init() {
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149 | ChangesetCache cc = ChangesetCache.getInstance();
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150 | List<Changeset> selected = getSelectedChangesets();
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151 | data.clear();
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152 | data.addAll(cc.getChangesets());
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153 | sort();
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154 | fireTableDataChanged();
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155 | setSelectedChangesets(selected);
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156 |
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157 | cc.addChangesetCacheListener(this);
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158 | }
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159 |
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160 | /**
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161 | * Destroys and unregisters this model.
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162 | */
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163 | public void tearDown() {
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164 | ChangesetCache.getInstance().removeChangesetCacheListener(this);
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165 | }
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166 |
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167 | /**
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168 | * Gets the selection model this table is based on.
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169 | * @return The selection model.
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170 | */
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171 | public DefaultListSelectionModel getSelectionModel() {
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172 | return selectionModel;
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173 | }
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174 |
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175 | protected void sort() {
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176 | data.sort(Comparator.comparingInt(Changeset::getId).reversed());
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177 | }
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178 |
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179 | /* ------------------------------------------------------------------------------ */
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180 | /* interface ChangesetCacheListener */
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181 | /* ------------------------------------------------------------------------------ */
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182 | @Override
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183 | public void changesetCacheUpdated(ChangesetCacheEvent event) {
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184 | List<Changeset> selected = getSelectedChangesets();
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185 | for (Changeset cs: event.getAddedChangesets()) {
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186 | data.add(cs);
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187 | }
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188 | for (Changeset cs: event.getRemovedChangesets()) {
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189 | data.remove(cs);
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190 | }
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191 | for (Changeset cs: event.getUpdatedChangesets()) {
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192 | int idx = data.indexOf(cs);
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193 | if (idx >= 0) {
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194 | Changeset mine = data.get(idx);
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195 | if (mine != cs) {
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196 | mine.mergeFrom(cs);
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197 | }
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198 | }
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199 | }
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200 | sort();
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201 | fireTableDataChanged();
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202 | setSelectedChangesets(selected);
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203 | }
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204 | }
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