root / branches / v2_0_0_prep / libraries / libFMap_controls / src / org / gvsig / fmap / mapcontrol / dal / feature / swing / FeatureSelectionModel.java @ 38564
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1 | 33378 | cordinyana | /* gvSIG. Geographic Information System of the Valencian Government
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2 | *
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3 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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4 | * of the Valencian Government (CIT)
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | */
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22 | |||
23 | /*
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24 | * AUTHORS (In addition to CIT):
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25 | * 2010 {} {{Task}}
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26 | */
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27 | package org.gvsig.fmap.mapcontrol.dal.feature.swing; |
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28 | |||
29 | import javax.swing.ListSelectionModel; |
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30 | import javax.swing.event.EventListenerList; |
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31 | import javax.swing.event.ListSelectionEvent; |
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32 | import javax.swing.event.ListSelectionListener; |
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33 | |||
34 | import org.gvsig.fmap.dal.exception.DataException; |
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35 | import org.gvsig.fmap.dal.feature.Feature; |
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36 | import org.gvsig.fmap.dal.feature.FeatureSelection; |
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37 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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38 | import org.gvsig.fmap.dal.feature.FeatureStoreNotification; |
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39 | 35959 | jpiera | import org.gvsig.fmap.dal.feature.exception.ConcurrentDataModificationException; |
40 | 33378 | cordinyana | import org.gvsig.fmap.mapcontrol.dal.feature.swing.table.FeatureTableModel; |
41 | import org.gvsig.tools.observer.Observable; |
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42 | import org.gvsig.tools.observer.Observer; |
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43 | 38564 | jjdelcerro | import org.slf4j.Logger; |
44 | import org.slf4j.LoggerFactory; |
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45 | 33378 | cordinyana | |
46 | /**
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47 | * @author 2010- C?sar Ordi?ana - gvSIG team
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48 | */
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49 | 33381 | cordinyana | public class FeatureSelectionModel implements ListSelectionModel, Observer { |
50 | 35959 | jpiera | private static Logger LOG = |
51 | LoggerFactory.getLogger(FeatureSelectionModel.class); |
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52 | |||
53 | 33378 | cordinyana | protected EventListenerList listenerList = new EventListenerList(); |
54 | |||
55 | private final FeatureTableModel featureTableModel; |
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56 | |||
57 | private int selectionMode = SINGLE_INTERVAL_SELECTION; |
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58 | |||
59 | private boolean isAdjusting = false; |
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60 | |||
61 | private int anchor = -1; |
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62 | |||
63 | private int lead = -1; |
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64 | 37596 | jpiera | |
65 | private int currentFirst = -1; |
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66 | private int currentLast = -1; |
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67 | 33378 | cordinyana | |
68 | /**
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69 | 33381 | cordinyana | * Creates a new {@link FeatureSelectionModel} with a
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70 | 33378 | cordinyana | * {@link FeatureTableModel} used to get the {@link Feature}s by position in
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71 | * the table.
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72 | *
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73 | * @param featureTableModel
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74 | * to get Features from
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75 | * @throws DataException
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76 | * if there is an error getting the store selection
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77 | */
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78 | 33381 | cordinyana | public FeatureSelectionModel(FeatureTableModel featureTableModel)
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79 | 33378 | cordinyana | throws DataException {
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80 | this.featureTableModel = featureTableModel;
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81 | this.featureTableModel.getFeatureStore().addObserver(this); |
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82 | } |
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83 | |||
84 | public int getAnchorSelectionIndex() { |
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85 | return anchor;
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86 | } |
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87 | |||
88 | public int getLeadSelectionIndex() { |
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89 | return lead;
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90 | } |
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91 | |||
92 | public int getMaxSelectionIndex() { |
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93 | FeatureSelection selection = getFeatureSelection(); |
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94 | try {
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95 | if (!selection.isEmpty()) {
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96 | for (int i = featureTableModel.getRowCount() - 1; i >= 0; i--) { |
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97 | if (selection.isSelected(featureTableModel.getFeatureAt(i))) {
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98 | return i;
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99 | } |
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100 | } |
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101 | } |
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102 | } catch (DataException e) {
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103 | throw new SelectionChangeException(e); |
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104 | } |
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105 | return -1; |
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106 | } |
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107 | |||
108 | public int getMinSelectionIndex() { |
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109 | FeatureSelection selection = getFeatureSelection(); |
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110 | try {
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111 | if (!selection.isEmpty()) {
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112 | for (int i = 0; i < featureTableModel.getRowCount(); i++) { |
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113 | if (selection.isSelected(featureTableModel.getFeatureAt(i))) {
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114 | return i;
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115 | } |
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116 | } |
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117 | } |
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118 | } catch (DataException e) {
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119 | throw new SelectionChangeException(e); |
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120 | } |
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121 | return -1; |
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122 | } |
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123 | |||
124 | public void insertIndexInterval(int index, int length, boolean before) { |
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125 | // Nothing to do
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126 | } |
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127 | |||
128 | public void removeIndexInterval(int index0, int index1) { |
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129 | // Nothing to do
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130 | } |
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131 | |||
132 | public void setAnchorSelectionIndex(int index) { |
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133 | this.anchor = index;
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134 | } |
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135 | |||
136 | public void setLeadSelectionIndex(int index) { |
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137 | this.lead = index;
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138 | } |
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139 | |||
140 | public void addSelectionInterval(int index0, int index1) { |
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141 | doWithSelection(new FeatureSelectionOperation() {
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142 | |||
143 | public void doWithSelection(FeatureSelection selection, int first, |
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144 | int last) throws DataException { |
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145 | for (int i = first; i <= last; i++) { |
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146 | Feature feature = getFeature(i); |
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147 | if (!selection.isSelected(feature)) {
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148 | selection.select(feature); |
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149 | } |
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150 | } |
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151 | } |
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152 | |||
153 | }, index0, index1, true);
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154 | } |
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155 | |||
156 | public void setSelectionInterval(int index0, int index1) { |
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157 | doWithSelection(new FeatureSelectionOperation() {
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158 | |||
159 | public void doWithSelection(FeatureSelection selection, int first, |
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160 | int last) throws DataException { |
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161 | selection.deselectAll(); |
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162 | for (int i = first; i <= last; i++) { |
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163 | Feature feature = getFeature(i); |
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164 | selection.select(feature); |
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165 | } |
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166 | } |
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167 | |||
168 | }, index0, index1, true);
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169 | } |
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170 | |||
171 | public void removeSelectionInterval(int index0, int index1) { |
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172 | doWithSelection(new FeatureSelectionOperation() {
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173 | |||
174 | public void doWithSelection(FeatureSelection selection, int first, |
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175 | int last) throws DataException { |
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176 | for (int i = first; i <= last; i++) { |
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177 | Feature feature = getFeature(i); |
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178 | if (selection.isSelected(feature)) {
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179 | selection.deselect(feature); |
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180 | } |
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181 | } |
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182 | } |
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183 | |||
184 | }, index0, index1, false);
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185 | } |
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186 | |||
187 | public void clearSelection() { |
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188 | try {
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189 | getFeatureSelection().deselectAll(); |
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190 | } catch (DataException e) {
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191 | throw new SelectionChangeException(e); |
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192 | } |
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193 | } |
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194 | |||
195 | public boolean isSelectedIndex(int index) { |
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196 | if (index == -1) { |
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197 | return false; |
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198 | } |
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199 | Feature feature = featureTableModel.getFeatureAt(index); |
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200 | return getFeatureSelection().isSelected(feature);
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201 | } |
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202 | |||
203 | public boolean isSelectionEmpty() { |
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204 | try {
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205 | return getFeatureSelection().isEmpty();
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206 | } catch (DataException ex) {
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207 | throw new SelectionChangeException(ex); |
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208 | } |
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209 | } |
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210 | |||
211 | public boolean getValueIsAdjusting() { |
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212 | return isAdjusting;
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213 | } |
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214 | |||
215 | public void setValueIsAdjusting(boolean valueIsAdjusting) { |
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216 | if (this.isAdjusting != valueIsAdjusting) { |
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217 | this.isAdjusting = valueIsAdjusting;
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218 | if (this.isAdjusting) { |
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219 | getFeatureSelection().beginComplexNotification(); |
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220 | } else {
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221 | getFeatureSelection().endComplexNotification(); |
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222 | } |
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223 | } |
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224 | } |
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225 | |||
226 | public int getSelectionMode() { |
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227 | return selectionMode;
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228 | } |
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229 | |||
230 | public void setSelectionMode(int selectionMode) { |
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231 | this.selectionMode = selectionMode;
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232 | } |
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233 | |||
234 | public void addListSelectionListener(ListSelectionListener listener) { |
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235 | listenerList.add(ListSelectionListener.class, listener);
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236 | } |
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237 | |||
238 | public void removeListSelectionListener(ListSelectionListener listener) { |
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239 | listenerList.remove(ListSelectionListener.class, listener);
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240 | } |
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241 | |||
242 | public void update(Observable observable, Object notification) { |
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243 | if (notification instanceof FeatureStoreNotification) { |
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244 | FeatureStoreNotification fnotification = |
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245 | (FeatureStoreNotification) notification; |
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246 | if (!fnotification.getSource().equals(getFeatureStore())) {
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247 | return;
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248 | } |
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249 | if (FeatureStoreNotification.SELECTION_CHANGE.equals(fnotification.getType())) {
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250 | 35959 | jpiera | try{
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251 | fireValueChanged(-1, -1, false); |
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252 | }catch(ConcurrentDataModificationException e){
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253 | LOG.warn("The store has been updated and the selection can not be refreshed", e);
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254 | } |
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255 | 33378 | cordinyana | } |
256 | } |
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257 | } |
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258 | |||
259 | private FeatureSelection getFeatureSelection() {
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260 | try {
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261 | return (FeatureSelection) getFeatureStore().getSelection();
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262 | } catch (DataException ex) {
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263 | throw new SelectionChangeException(ex); |
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264 | } |
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265 | } |
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266 | |||
267 | /**
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268 | * @param operation
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269 | * @param index0
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270 | * @param index1
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271 | */
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272 | private void doWithSelection(FeatureSelectionOperation operation, |
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273 | int index0, int index1, boolean select) { |
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274 | // Set the anchor and lead
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275 | anchor = index0; |
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276 | lead = index1; |
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277 | |||
278 | // As index0 <= index1 is no guaranteed, calculate the first and second
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279 | // values
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280 | int first = (index0 <= index1) ? index0 : index1;
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281 | int last = (index0 <= index1) ? index1 : index0;
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282 | 37596 | jpiera | |
283 | //If the new selection is not updated don't continue
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284 | if ((currentFirst == first) && (currentLast == last)){
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285 | return;
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286 | } |
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287 | currentFirst = first; |
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288 | currentLast = last; |
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289 | 33378 | cordinyana | |
290 | FeatureSelection selection = getFeatureSelection(); |
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291 | |||
292 | // Perform the selection operation into a complex notification
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293 | selection.beginComplexNotification(); |
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294 | try {
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295 | // Is a full select or deselect
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296 | if (first == 00 && last == featureTableModel.getRowCount() - 1) { |
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297 | if (select) {
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298 | selection.selectAll(); |
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299 | } else {
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300 | selection.deselectAll(); |
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301 | } |
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302 | } else {
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303 | operation.doWithSelection(selection, first, last); |
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304 | } |
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305 | } catch (DataException e) {
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306 | throw new SelectionChangeException(e); |
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307 | } finally {
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308 | selection.endComplexNotification(); |
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309 | } |
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310 | |||
311 | fireValueChanged(first, last, isAdjusting); |
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312 | } |
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313 | |||
314 | /**
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315 | * Returns a Feature by table row position.
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316 | */
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317 | private Feature getFeature(int index) { |
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318 | return featureTableModel.getFeatureAt(index);
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319 | } |
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320 | |||
321 | /**
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322 | * Returns the FeatureStore.
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323 | */
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324 | private FeatureStore getFeatureStore() {
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325 | return featureTableModel.getFeatureStore();
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326 | } |
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327 | |||
328 | /**
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329 | * @param firstIndex
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330 | * the first index in the interval
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331 | * @param lastIndex
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332 | * the last index in the interval
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333 | * @param isAdjusting
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334 | * true if this is the final change in a series of adjustments
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335 | * @see EventListenerList
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336 | */
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337 | protected void fireValueChanged(int firstIndex, int lastIndex, |
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338 | boolean isAdjusting) {
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339 | Object[] listeners = listenerList.getListenerList(); |
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340 | ListSelectionEvent e = null; |
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341 | |||
342 | for (int i = listeners.length - 2; i >= 0; i -= 2) { |
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343 | if (listeners[i] == ListSelectionListener.class) { |
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344 | if (e == null) { |
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345 | e = |
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346 | new ListSelectionEvent(this, firstIndex, lastIndex, |
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347 | isAdjusting); |
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348 | } |
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349 | ((ListSelectionListener) listeners[i + 1]).valueChanged(e); |
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350 | } |
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351 | } |
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352 | } |
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353 | |||
354 | private interface FeatureSelectionOperation { |
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355 | void doWithSelection(FeatureSelection selection, int first, int last) |
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356 | throws DataException;
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357 | } |
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358 | } |