/[schmitzm]/trunk/src/skrueger/geotools/selection/FeatureMapLayerSelectionSynchronizer.java
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Annotation of /trunk/src/skrueger/geotools/selection/FeatureMapLayerSelectionSynchronizer.java

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Revision 147 - (hide annotations)
Thu Jun 18 12:59:20 2009 UTC (15 years, 8 months ago) by alfonx
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* Selection buttons working again: add/remove...
1 alfonx 97 /**
2     Copyright 2008 Stefan Alfons Krüger
3    
4     atlas-framework - This file is part of the Atlas Framework
5    
6     This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
7     This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
8     You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
9    
10     Diese Bibliothek ist freie Software; Sie dürfen sie unter den Bedingungen der GNU Lesser General Public License, wie von der Free Software Foundation veröffentlicht, weiterverteilen und/oder modifizieren; entweder gemäß Version 2.1 der Lizenz oder (nach Ihrer Option) jeder späteren Version.
11     Diese Bibliothek wird in der Hoffnung weiterverbreitet, daß sie nützlich sein wird, jedoch OHNE IRGENDEINE GARANTIE, auch ohne die implizierte Garantie der MARKTREIFE oder der VERWENDBARKEIT FÜR EINEN BESTIMMTEN ZWECK. Mehr Details finden Sie in der GNU Lesser General Public License.
12     Sie sollten eine Kopie der GNU Lesser General Public License zusammen mit dieser Bibliothek erhalten haben; falls nicht, schreiben Sie an die Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA.
13     **/
14     package skrueger.geotools.selection;
15    
16     import java.beans.PropertyChangeEvent;
17     import java.beans.PropertyChangeListener;
18 alfonx 123 import java.util.Arrays;
19 alfonx 97 import java.util.Collection;
20     import java.util.Vector;
21    
22     import javax.swing.JTable;
23     import javax.swing.ListSelectionModel;
24     import javax.swing.event.ListSelectionListener;
25    
26     import org.geotools.feature.Feature;
27     import org.geotools.map.MapLayer;
28 alfonx 123 import org.geotools.styling.FeatureTypeStyle;
29 alfonx 97 import org.geotools.styling.Style;
30 alfonx 101 import org.opengis.filter.Filter;
31     import org.opengis.filter.FilterVisitor;
32 alfonx 97
33     import schmitzm.geotools.gui.JMapPane;
34     import schmitzm.geotools.map.event.FeatureSelectedEvent;
35     import schmitzm.geotools.map.event.JMapPaneEvent;
36     import schmitzm.geotools.map.event.JMapPaneListener;
37     import schmitzm.geotools.styling.StylingUtil;
38 alfonx 104 import schmitzm.lang.LangUtil;
39 alfonx 111 import skrueger.geotools.MapPaneToolBar;
40 alfonx 97 import skrueger.geotools.StyledMapInterface;
41    
42     /**
43     * This class keeps the selection of a (feature) {@link JTable} synchronized
44     * with the {@link StyledLayerSelectionModel} of a layer. This is done by
45     * implementing:
46     * <ul>
47     * <li>a {@link PropertyChangeListener} which listens to the
48     * {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
49     * selection</li>
50     * <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
51     * accordingly changes the {@link StyledLayerSelectionModel} selection</li>
52     * </ul>
53     * After creating, the instance of this synchronizer must be added as listener
54     * to both, the {@link StyledLayerSelectionModel} and the table's
55     * {@link ListSelectionModel}.
56     *
57     * @author <a href="mailto:[email protected]">Martin Schmitz</a>
58     * (University of Bonn/Germany)
59     */
60     public class FeatureMapLayerSelectionSynchronizer extends
61 alfonx 106 StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
62     implements JMapPaneListener {
63 alfonx 111 public static final String SELECTION_STYLING = "SELECTION";
64 alfonx 97 /**
65     * Holds the {@link MapLayer} to keep synchronized with the layer selection
66     * model.
67     */
68     protected final MapLayer mapLayer;
69     protected final StyledMapInterface<?> styledMapLayer;
70     protected final JMapPane mapPane;
71 alfonx 111 private final MapPaneToolBar toolBar;
72 alfonx 97
73     /**
74     * Creates a new synchronizer
75     *
76     * @param layerSelModel
77     * layer selection model to keep synchronized with the
78     * {@link MapLayer}
79     *
80     * @param mapLayer
81     * {@link MapLayer} to keep synchronized with.
82     */
83     public FeatureMapLayerSelectionSynchronizer(
84     StyledFeatureLayerSelectionModel layerSelModel,
85     StyledMapInterface<?> styledMapLayer, MapLayer mapLayer,
86 alfonx 111 JMapPane mapPane, MapPaneToolBar toolBar) {
87 alfonx 97
88     super(layerSelModel);
89     this.styledMapLayer = styledMapLayer;
90    
91     this.mapLayer = mapLayer;
92     this.mapPane = mapPane;
93 alfonx 111 this.toolBar = toolBar;
94 alfonx 97 }
95    
96     /**
97     * Called by {@link StyledLayerSelectionModel} when a the selection on other
98     * selection components (map, chart, ...) has changed. When calling this
99     *
100     * method changes the {@link MapLayer} selection according to the
101     * {@link StyledLayerSelectionModel} selection.
102     *
103     * @param evt
104     * an event
105     */
106     @Override
107     public void propertyChange(PropertyChangeEvent evt) {
108     if (!(evt instanceof StyledLayerSelectionEvent))
109     return;
110     StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
111     // Only react on own layer and ignore events invoked by
112     // this component itself
113     if (selEvt.getEmitter() != layerSelModel || selectionChangeCausedByMe)
114     return;
115     // Apply new selection on table (except this event is one of
116     // some more events)
117 alfonx 111 Vector<String> newSelection = layerSelModel.getSelection();
118 alfonx 97 if (newSelection == null)
119     return;
120    
121     // Avoid event circles in valueChanged(..)
122     selectionChangeCausedByMe = true;
123    
124     changeLayerStyle(newSelection);
125    
126     // Danger of event circles in valueChanged(..) banned
127     selectionChangeCausedByMe = false;
128     }
129    
130 alfonx 111 private void changeLayerStyle(final Vector<String> newSelection) {
131 alfonx 97 Style selectionMapStyle = null;
132     try {
133     if (newSelection.isEmpty()) {
134    
135     selectionMapStyle = styledMapLayer.getStyle();
136 alfonx 147 // LOGGER.debug("NO SELECTION .. set to original style directly");
137 alfonx 106
138 alfonx 97 } else {
139 alfonx 100 LOGGER.debug("SELECTION .. change style");
140 alfonx 106
141 alfonx 123 // We take Style from the MapLayer that is displayed at the
142     // moment. We do not use the styledMapLayer.getStyle, because in
143     // the atlas, this always return the default style, but
144     // additionaly styles might be selected.
145     // Taking the style from the mapLayer indicated, that we have to
146 alfonx 125 // remove any selection rules first.
147 alfonx 123 Style originalStyle = mapLayer.getStyle();
148 alfonx 101
149 alfonx 123 // TODO The default style is not good here. We need
150     // .createSelectionStyle(normalStyle, geoObj);
151 alfonx 107 selectionMapStyle = StylingUtil
152 alfonx 128 .createSelectionStyle(styledMapLayer.getGeoObject());
153     // selectionMapStyle = StylingUtil
154     // .createDefaultStyle(styledMapLayer.getGeoObject());
155 alfonx 106
156 alfonx 123 selectionMapStyle.getFeatureTypeStyles()[0]
157     .setName(SELECTION_STYLING);
158    
159 alfonx 106 // Rule selectedRule = StylingUtil.STYLE_FACTORY.createRule();
160 alfonx 107 selectionMapStyle.getFeatureTypeStyles()[0].getRules()[0]
161 alfonx 106 .setFilter(new Filter() {
162    
163     @Override
164     public Object accept(FilterVisitor visitor,
165     Object extraData) {
166     return null;
167 alfonx 105 }
168 alfonx 106
169     @Override
170     public boolean evaluate(Object obj) {
171     if (obj instanceof Feature) {
172     Feature f = (Feature) obj;
173 alfonx 125 // TODO BAD CODE! says Martin.. i am fine
174     // with it.. well.. not great...
175 alfonx 111 for (String ffID : newSelection) {
176     if (ffID.equals(f.getID()))
177 alfonx 106 return true;
178     }
179     return false;
180    
181     }
182     return false;
183     }
184    
185     });
186    
187 alfonx 125 FeatureTypeStyle[] originalFeatureTypeStyles = originalStyle
188     .getFeatureTypeStyles();
189     FeatureTypeStyle[] newFeatureTypes;
190     if (originalFeatureTypeStyles[originalFeatureTypeStyles.length - 1]
191     .getName() != null
192     && originalFeatureTypeStyles[originalFeatureTypeStyles.length - 1]
193     .getName().equals(SELECTION_STYLING)) {
194     newFeatureTypes = Arrays.copyOf(originalFeatureTypeStyles,
195     originalFeatureTypeStyles.length - 1);
196 alfonx 123 } else {
197     newFeatureTypes = originalFeatureTypeStyles;
198     }
199 alfonx 128
200 alfonx 123 // The last FTS is the selection FTS
201 alfonx 125 newFeatureTypes = LangUtil.extendArray(newFeatureTypes,
202     selectionMapStyle.getFeatureTypeStyles());
203    
204 alfonx 123 selectionMapStyle.setFeatureTypeStyles(newFeatureTypes);
205 alfonx 106
206 alfonx 97 }
207    
208     mapLayer.setStyle(selectionMapStyle);
209     mapPane.refresh();
210     } catch (Exception e) {
211     LOGGER.error("Error while trying to create a selection style", e);
212     }
213     }
214    
215     @Override
216     public void performMapPaneEvent(JMapPaneEvent e) {
217 alfonx 106
218 alfonx 111 /**
219     * Only listen to FeatureSelectionEvents if the appropriate tool is
220     * selected.
221     */
222     final int selectedTool = toolBar.getSelectedTool();
223     if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
224     && selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
225     && selectedTool != MapPaneToolBar.TOOL_SELECTION_CLEAR
226     && selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
227     return;
228     }
229    
230 alfonx 105 if (!(e instanceof FeatureSelectedEvent)) {
231 alfonx 111 // LOGGER.debug("Ignoring event " + e);
232 alfonx 97 return;
233 alfonx 105 }
234 mojays 109 // only listen to events directly coming from JMapPane
235     // selection (ignore selections from FilterDialog)
236 alfonx 111 if (e.getSourceObject() != this.mapPane)
237     return;
238    
239 alfonx 97 FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
240    
241     // ignore event if it is caused by the DpLayerVectorSelectionModel
242     if (selectionChangeCausedByMe)
243     return;
244    
245 alfonx 111 LOGGER.debug("Do event " + fse);
246    
247 alfonx 97 // Avoid event circles in propertyChange(..)
248     selectionChangeCausedByMe = true;
249    
250 alfonx 111 if (selectedTool == MapPaneToolBar.TOOL_SELECTION_CLEAR) {
251     layerSelModel.clearSelection();
252     } else {
253     Collection<Feature> selectionResult = (Collection<Feature>) fse
254     .getSelectionResult();
255 alfonx 97
256 alfonx 111 // reset the selection of the DpLayerSelectionModel
257     // layerSelModel.setValueIsAdjusting(true);
258 alfonx 97
259 alfonx 111 if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
260     layerSelModel.setValueIsAdjusting(true);
261     for (Feature f : selectionResult) {
262     layerSelModel.addSelection(f.getID());
263     }
264     layerSelModel.setValueIsAdjusting(false);
265     } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
266     layerSelModel.setValueIsAdjusting(true);
267     layerSelModel.clearSelection();
268 alfonx 97
269 alfonx 111 for (Feature f : selectionResult) {
270     layerSelModel.addSelection(f.getID());
271     }
272    
273     LOGGER.debug("Setting selection to " + selectionResult.size());
274     layerSelModel.setValueIsAdjusting(false);
275     } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
276     layerSelModel.setValueIsAdjusting(true);
277     for (Feature f : selectionResult) {
278     layerSelModel.removeSelection(f.getID());
279     }
280     layerSelModel.setValueIsAdjusting(false);
281     }
282     } // els it's not a Clear Selection command
283    
284     // Show selected features in the map, which is not automatically done by
285     // the origin: FeatureSelectedEvent
286 alfonx 97 changeLayerStyle(layerSelModel.getSelection());
287 alfonx 106
288 alfonx 97 // Danger of event circles in propertyChange(..) banned
289     selectionChangeCausedByMe = false;
290     }
291     }

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