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.data.osm.DataSelectionListener;
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10 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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11 | import org.openstreetmap.josm.data.osm.event.SelectionEventManager;
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12 | import org.openstreetmap.josm.gui.MainApplication;
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13 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerAddEvent;
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14 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerChangeListener;
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15 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerOrderChangeEvent;
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16 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerRemoveEvent;
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17 | import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeEvent;
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18 | import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeListener;
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19 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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20 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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21 |
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22 | /**
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23 | * This table shows the primitives that are currently selected in the main OSM view.
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24 | * @since 1790
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25 | */
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26 | public class SelectionTableModel extends AbstractTableModel implements DataSelectionListener, ActiveLayerChangeListener, LayerChangeListener {
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27 |
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28 | /** this selection table model only displays selected primitives in this layer */
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29 | private final transient OsmDataLayer layer;
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30 | private final transient List<OsmPrimitive> cache;
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31 |
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32 | /**
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33 | * Creates a new {@link SelectionTableModel} for a given layer
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34 | *
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35 | * @param layer the data layer. Must not be null.
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36 | * @throws IllegalArgumentException if layer is null
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37 | */
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38 | public SelectionTableModel(OsmDataLayer layer) {
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39 | CheckParameterUtil.ensureParameterNotNull(layer, "layer");
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40 | this.layer = layer;
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41 | cache = new ArrayList<>();
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42 | populateSelectedPrimitives(layer);
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43 | }
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44 |
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45 | /**
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46 | * Registers listeners (selection change and layer change).
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47 | */
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48 | public void register() {
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49 | SelectionEventManager.getInstance().addSelectionListener(this);
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50 | MainApplication.getLayerManager().addActiveLayerChangeListener(this);
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51 | }
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52 |
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53 | /**
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54 | * Unregisters listeners (selection change and layer change).
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55 | */
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56 | public void unregister() {
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57 | SelectionEventManager.getInstance().removeSelectionListener(this);
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58 | MainApplication.getLayerManager().removeActiveLayerChangeListener(this);
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59 | }
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60 |
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61 | @Override
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62 | public int getColumnCount() {
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63 | return 1;
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64 | }
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65 |
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66 | @Override
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67 | public int getRowCount() {
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68 | if (MainApplication.getLayerManager().getEditLayer() != layer)
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69 | return 0;
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70 | return cache.size();
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71 | }
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72 |
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73 | @Override
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74 | public Object getValueAt(int rowIndex, int columnIndex) {
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75 | return cache.get(rowIndex);
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76 | }
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77 |
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78 | @Override
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79 | public void activeOrEditLayerChanged(ActiveLayerChangeEvent e) {
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80 | if (e.getPreviousActiveLayer() == layer) {
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81 | cache.clear();
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82 | }
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83 | fireTableDataChanged();
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84 | }
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85 |
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86 | @Override
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87 | public void layerAdded(LayerAddEvent e) {
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88 | // do nothing
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89 | }
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90 |
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91 | @Override
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92 | public void layerRemoving(LayerRemoveEvent e) {
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93 | if (e.getRemovedLayer() == layer) {
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94 | unregister();
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95 | }
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96 | this.cache.clear();
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97 | fireTableDataChanged();
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98 | }
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99 |
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100 | @Override
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101 | public void layerOrderChanged(LayerOrderChangeEvent e) {
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102 | // do nothing
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103 | }
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104 |
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105 | @Override
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106 | public void selectionChanged(SelectionChangeEvent event) {
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107 | selectionChanged(event.getSelection());
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108 | }
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109 |
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110 | private void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
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111 | if (layer == MainApplication.getLayerManager().getActiveDataLayer()) {
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112 | cache.clear();
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113 | cache.addAll(newSelection);
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114 | } else {
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115 | cache.clear();
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116 | }
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117 | fireTableDataChanged();
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118 | }
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119 |
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120 | /**
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121 | * Returns the selected primitives.
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122 | * @return the selected primitives
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123 | */
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124 | public List<OsmPrimitive> getSelection() {
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125 | return cache;
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126 | }
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127 |
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128 | /**
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129 | * populates the model with the primitives currently selected in
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130 | * <code>layer</code>
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131 | *
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132 | * @param layer the data layer
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133 | */
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134 | protected void populateSelectedPrimitives(OsmDataLayer layer) {
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135 | selectionChanged(layer.data.getAllSelected());
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136 | }
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137 |
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138 | /**
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139 | * Replies the primitive at row <code>row</code> in this model
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140 | *
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141 | * @param row the row
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142 | * @return the primitive at row <code>row</code> in this model
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143 | * @throws ArrayIndexOutOfBoundsException if index is invalid
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144 | */
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145 | public OsmPrimitive getPrimitive(int row) {
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146 | return cache.get(row);
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147 | }
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148 |
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149 | }
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