1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.dialogs.relation;
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3 | import java.util.ArrayList;
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4 | import java.util.Collection;
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5 | import java.util.List;
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6 |
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7 | import javax.swing.table.AbstractTableModel;
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8 |
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9 | import org.openstreetmap.josm.Main;
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10 | import org.openstreetmap.josm.data.SelectionChangedListener;
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11 | import org.openstreetmap.josm.data.osm.DataSet;
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12 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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13 | import org.openstreetmap.josm.gui.MapView;
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14 | import org.openstreetmap.josm.gui.layer.Layer;
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15 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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16 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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17 |
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18 | public class SelectionTableModel extends AbstractTableModel implements SelectionChangedListener, MapView.LayerChangeListener{
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19 |
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20 | /** this selection table model only displays selected primitives in this layer */
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21 | private transient OsmDataLayer layer;
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22 | private transient List<OsmPrimitive> cache;
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23 |
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24 | /**
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25 | * constructor
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26 | *
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27 | * @param layer the data layer. Must not be null.
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28 | * @throws IllegalArgumentException if layer is null
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29 | */
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30 | public SelectionTableModel(OsmDataLayer layer) {
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31 | CheckParameterUtil.ensureParameterNotNull(layer, "layer");
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32 | this.layer = layer;
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33 | cache = new ArrayList<>();
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34 | populateSelectedPrimitives(layer);
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35 | }
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36 |
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37 | public void register() {
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38 | DataSet.addSelectionListener(this);
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39 | MapView.addLayerChangeListener(this);
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40 | }
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41 |
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42 | public void unregister() {
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43 | DataSet.removeSelectionListener(this);
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44 | MapView.removeLayerChangeListener(this);
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45 | }
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46 |
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47 | @Override
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48 | public int getColumnCount() {
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49 | return 1;
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50 | }
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51 |
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52 | @Override
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53 | public int getRowCount() {
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54 | if (Main.main.getEditLayer() != layer)
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55 | return 0;
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56 | return cache.size();
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57 | }
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58 |
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59 | @Override
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60 | public Object getValueAt(int rowIndex, int columnIndex) {
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61 | return cache.get(rowIndex);
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62 | }
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63 |
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64 | @Override
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65 | public void activeLayerChange(Layer oldLayer, Layer newLayer) {
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66 | if (oldLayer == layer) {
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67 | cache.clear();
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68 | }
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69 | if (newLayer == layer) {
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70 | cache.addAll(((OsmDataLayer) newLayer).data.getAllSelected());
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71 | }
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72 | fireTableDataChanged();
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73 | }
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74 |
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75 | @Override
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76 | public void layerAdded(Layer newLayer) {
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77 | // do nothing
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78 | }
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79 |
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80 | @Override
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81 | public void layerRemoved(Layer oldLayer) {
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82 | if (oldLayer == layer) {
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83 | unregister();
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84 | }
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85 | this.cache.clear();
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86 | fireTableDataChanged();
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87 | }
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88 |
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89 | @Override
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90 | public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
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91 | if (layer == Main.main.getEditLayer()) {
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92 | cache.clear();
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93 | cache.addAll(newSelection);
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94 | } else {
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95 | cache.clear();
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96 | }
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97 | fireTableDataChanged();
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98 | }
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99 |
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100 | public List<OsmPrimitive> getSelection() {
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101 | return cache;
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102 | }
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103 |
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104 | /**
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105 | * populates the model with the primitives currently selected in
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106 | * <code>layer</code>
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107 | *
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108 | * @param layer the data layer
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109 | */
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110 | protected void populateSelectedPrimitives(OsmDataLayer layer) {
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111 | selectionChanged(layer.data.getAllSelected());
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112 | }
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113 |
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114 | /**
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115 | * Replies the primitive at row <code>row</code> in this model
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116 | *
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117 | * @param row the row
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118 | * @return the primitive at row <code>row</code> in this model
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119 | */
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120 | public OsmPrimitive getPrimitive(int row) {
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121 | return cache.get(row);
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122 | }
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123 | }
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