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.HashSet;
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8 | import java.util.List;
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9 | import java.util.Set;
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10 |
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11 | import javax.swing.DefaultListModel;
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12 | import javax.swing.DefaultListSelectionModel;
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13 |
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14 | import org.openstreetmap.josm.data.osm.Changeset;
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15 | import org.openstreetmap.josm.data.osm.ChangesetCache;
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16 | import org.openstreetmap.josm.data.osm.ChangesetCacheEvent;
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17 | import org.openstreetmap.josm.data.osm.ChangesetCacheListener;
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18 | import org.openstreetmap.josm.data.osm.DataSet;
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19 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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20 | import org.openstreetmap.josm.data.osm.Storage;
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21 | import org.openstreetmap.josm.gui.util.GuiHelper;
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22 |
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23 | /**
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24 | * This is the model that backs a list of changesets
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25 | */
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26 | public class ChangesetListModel extends DefaultListModel<Changeset> implements ChangesetCacheListener {
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27 | private final transient List<Changeset> data = new ArrayList<>();
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28 | private final transient Storage<Changeset> shownChangesets = new Storage<>(true);
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29 | private final DefaultListSelectionModel selectionModel;
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30 |
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31 | /**
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32 | * Creates a new {@link ChangesetListModel}
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33 | * @param selectionModel The selection model to use for this list
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34 | */
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35 | public ChangesetListModel(DefaultListSelectionModel selectionModel) {
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36 | this.selectionModel = selectionModel;
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37 | }
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38 |
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39 | /**
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40 | * Gets the list of changesets that are currently selected
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41 | * @return The selected changesets
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42 | */
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43 | public Set<Changeset> getSelectedChangesets() {
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44 | Set<Changeset> ret = new HashSet<>();
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45 | for (int i = 0; i < getSize(); i++) {
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46 | if (selectionModel.isSelectedIndex(i)) {
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47 | ret.add(data.get(i));
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48 | }
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49 | }
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50 | return ret;
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51 | }
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52 |
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53 | /**
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54 | * Gets the IDs of the changesets that are selected
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55 | * @return The selected ids
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56 | */
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57 | public Set<Integer> getSelectedChangesetIds() {
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58 | Set<Integer> ret = new HashSet<>();
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59 | for (int i = 0; i < getSize(); i++) {
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60 | if (selectionModel.isSelectedIndex(i)) {
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61 | ret.add(data.get(i).getId());
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62 | }
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63 | }
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64 | return ret;
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65 | }
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66 |
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67 | /**
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68 | * Sets the changesets to select
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69 | * @param changesets The changesets
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70 | */
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71 | public void setSelectedChangesets(Collection<Changeset> changesets) {
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72 | selectionModel.setValueIsAdjusting(true);
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73 | selectionModel.clearSelection();
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74 | if (changesets != null) {
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75 | for (Changeset cs: changesets) {
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76 | int idx = data.indexOf(cs);
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77 | if (idx >= 0) {
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78 | selectionModel.addSelectionInterval(idx, idx);
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79 | }
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80 | }
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81 | }
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82 | selectionModel.setValueIsAdjusting(false);
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83 | }
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84 |
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85 | protected void setChangesets(Collection<Changeset> changesets) {
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86 | shownChangesets.clear();
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87 | if (changesets != null) {
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88 | shownChangesets.addAll(changesets);
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89 | }
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90 | updateModel();
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91 | }
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92 |
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93 | private void updateModel() {
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94 | Set<Changeset> sel = getSelectedChangesets();
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95 | data.clear();
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96 | data.addAll(shownChangesets);
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97 | ChangesetCache cache = ChangesetCache.getInstance();
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98 | for (Changeset cs: data) {
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99 | if (cache.contains(cs) && cache.get(cs.getId()) != cs) {
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100 | cs.mergeFrom(cache.get(cs.getId()));
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101 | }
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102 | }
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103 | sort();
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104 | fireIntervalAdded(this, 0, getSize());
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105 | setSelectedChangesets(sel);
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106 | }
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107 |
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108 | /**
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109 | * Loads this list with the given changesets
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110 | * @param ids The ids of the changesets to display
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111 | */
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112 | public void initFromChangesetIds(Collection<Integer> ids) {
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113 | if (ids == null || ids.isEmpty()) {
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114 | setChangesets(null);
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115 | return;
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116 | }
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117 | Set<Changeset> changesets = new HashSet<>(ids.size());
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118 | for (int id: ids) {
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119 | if (id <= 0) {
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120 | continue;
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121 | }
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122 | changesets.add(new Changeset(id));
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123 | }
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124 | setChangesets(changesets);
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125 | }
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126 |
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127 | /**
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128 | * Loads this list with the given changesets
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129 | * @param primitives The primitives of which the changesets should be displayed
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130 | */
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131 | public void initFromPrimitives(Collection<? extends OsmPrimitive> primitives) {
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132 | if (primitives == null) {
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133 | setChangesets(null);
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134 | return;
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135 | }
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136 | Set<Changeset> changesets = new HashSet<>();
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137 | for (OsmPrimitive p: primitives) {
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138 | if (p.getChangesetId() <= 0) {
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139 | continue;
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140 | }
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141 | changesets.add(new Changeset(p.getChangesetId()));
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142 | }
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143 | setChangesets(changesets);
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144 | }
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145 |
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146 | /**
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147 | * Loads this list with the given changesets
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148 | * @param ds The data set to get all changesets from
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149 | */
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150 | public void initFromDataSet(DataSet ds) {
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151 | if (ds == null) {
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152 | setChangesets(null);
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153 | return;
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154 | }
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155 | Set<Changeset> changesets = new HashSet<>();
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156 | for (OsmPrimitive p: ds.allPrimitives()) {
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157 | if (p.getChangesetId() <= 0) {
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158 | continue;
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159 | }
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160 | changesets.add(new Changeset(p.getChangesetId()));
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161 | }
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162 | setChangesets(changesets);
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163 | }
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164 |
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165 | @Override
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166 | public Changeset getElementAt(int idx) {
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167 | return data.get(idx);
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168 | }
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169 |
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170 | @Override
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171 | public int getSize() {
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172 | return data.size();
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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 | * Replies true if there is at least one selected open changeset
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181 | *
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182 | * @return true if there is at least one selected open changeset
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183 | */
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184 | public boolean hasSelectedOpenChangesets() {
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185 | return !getSelectedOpenChangesets().isEmpty();
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186 | }
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187 |
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188 | /**
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189 | * Replies the selected open changesets
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190 | *
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191 | * @return the selected open changesets
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192 | */
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193 | public List<Changeset> getSelectedOpenChangesets() {
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194 | List<Changeset> ret = new ArrayList<>();
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195 | for (int i = 0; i < getSize(); i++) {
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196 | if (selectionModel.isSelectedIndex(i)) {
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197 | Changeset cs = data.get(i);
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198 | if (cs.isOpen()) {
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199 | ret.add(cs);
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200 | }
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201 | }
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202 | }
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203 | return ret;
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204 | }
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205 |
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206 | /* ---------------------------------------------------------------------------- */
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207 | /* Interface ChangesetCacheListener */
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208 | /* ---------------------------------------------------------------------------- */
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209 | @Override
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210 | public void changesetCacheUpdated(ChangesetCacheEvent event) {
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211 | Set<Changeset> sel = getSelectedChangesets();
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212 | for (Changeset cs: event.getAddedChangesets()) {
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213 | int idx = data.indexOf(cs);
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214 | if (idx >= 0 && data.get(idx) != cs) {
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215 | data.get(idx).mergeFrom(cs);
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216 | }
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217 | }
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218 | for (Changeset cs: event.getUpdatedChangesets()) {
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219 | int idx = data.indexOf(cs);
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220 | if (idx >= 0 && data.get(idx) != cs) {
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221 | data.get(idx).mergeFrom(cs);
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222 | }
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223 | }
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224 | for (Changeset cs: event.getRemovedChangesets()) {
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225 | int idx = data.indexOf(cs);
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226 | if (idx >= 0) {
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227 | // replace with an incomplete changeset
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228 | data.set(idx, new Changeset(cs.getId()));
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229 | }
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230 | }
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231 | GuiHelper.runInEDT(() -> {
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232 | fireContentsChanged(this, 0, getSize());
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233 | setSelectedChangesets(sel);
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234 | });
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235 | }
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236 | }
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