/[schmitzm]/branches/2.0-RC1/src/skrueger/geotools/selection/FeatureMapLayerSelectionSynchronizer.java
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Revision 123 - (hide annotations)
Wed May 20 15:54:51 2009 UTC (15 years, 9 months ago) by alfonx
Original Path: trunk/src/skrueger/geotools/selection/FeatureMapLayerSelectionSynchronizer.java
File MIME type: text/plain
File size: 11509 byte(s)
* Changed the logic to generate the Style which contains a FeatureTypeStyle for the selection. It now uses the MapLayer.getStyle() as a base (instead of styledObj.getStyle() ) and simply removes any old FeatureTypeStyle that contains Rules for an older selection. 
Why? 
1. Because the MapLayer's Style might have been changed by the AS and we don't want the Style to reset.
2. Because in the Atlas the DPLayer's getStyle() always returns the default style, ignoring any additionaly styles. 
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 alfonx 111 import org.geotools.feature.FeatureCollection;
28 alfonx 97 import org.geotools.map.MapLayer;
29 alfonx 123 import org.geotools.styling.FeatureTypeStyle;
30 alfonx 97 import org.geotools.styling.Style;
31 alfonx 101 import org.opengis.filter.Filter;
32     import org.opengis.filter.FilterVisitor;
33 alfonx 97
34     import schmitzm.geotools.gui.JMapPane;
35     import schmitzm.geotools.map.event.FeatureSelectedEvent;
36     import schmitzm.geotools.map.event.JMapPaneEvent;
37     import schmitzm.geotools.map.event.JMapPaneListener;
38     import schmitzm.geotools.styling.StylingUtil;
39 alfonx 104 import schmitzm.lang.LangUtil;
40 alfonx 111 import skrueger.geotools.MapPaneToolBar;
41 alfonx 97 import skrueger.geotools.StyledMapInterface;
42    
43     /**
44     * This class keeps the selection of a (feature) {@link JTable} synchronized
45     * with the {@link StyledLayerSelectionModel} of a layer. This is done by
46     * implementing:
47     * <ul>
48     * <li>a {@link PropertyChangeListener} which listens to the
49     * {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
50     * selection</li>
51     * <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
52     * accordingly changes the {@link StyledLayerSelectionModel} selection</li>
53     * </ul>
54     * After creating, the instance of this synchronizer must be added as listener
55     * to both, the {@link StyledLayerSelectionModel} and the table's
56     * {@link ListSelectionModel}.
57     *
58     * @author <a href="mailto:[email protected]">Martin Schmitz</a>
59     * (University of Bonn/Germany)
60     */
61     public class FeatureMapLayerSelectionSynchronizer extends
62 alfonx 106 StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
63     implements JMapPaneListener {
64 alfonx 111 public static final String SELECTION_STYLING = "SELECTION";
65 alfonx 97 /**
66     * Holds the {@link MapLayer} to keep synchronized with the layer selection
67     * model.
68     */
69     protected final MapLayer mapLayer;
70     protected final StyledMapInterface<?> styledMapLayer;
71     protected final JMapPane mapPane;
72 alfonx 111 private final MapPaneToolBar toolBar;
73 alfonx 97
74     /**
75     * Creates a new synchronizer
76     *
77     * @param layerSelModel
78     * layer selection model to keep synchronized with the
79     * {@link MapLayer}
80     *
81     * @param mapLayer
82     * {@link MapLayer} to keep synchronized with.
83     */
84     public FeatureMapLayerSelectionSynchronizer(
85     StyledFeatureLayerSelectionModel layerSelModel,
86     StyledMapInterface<?> styledMapLayer, MapLayer mapLayer,
87 alfonx 111 JMapPane mapPane, MapPaneToolBar toolBar) {
88 alfonx 97
89     super(layerSelModel);
90     this.styledMapLayer = styledMapLayer;
91    
92     this.mapLayer = mapLayer;
93     this.mapPane = mapPane;
94 alfonx 111 this.toolBar = toolBar;
95 alfonx 97 }
96    
97     /**
98     * Called by {@link StyledLayerSelectionModel} when a the selection on other
99     * selection components (map, chart, ...) has changed. When calling this
100     *
101     * method changes the {@link MapLayer} selection according to the
102     * {@link StyledLayerSelectionModel} selection.
103     *
104     * @param evt
105     * an event
106     */
107     @Override
108     public void propertyChange(PropertyChangeEvent evt) {
109     if (!(evt instanceof StyledLayerSelectionEvent))
110     return;
111     StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
112     // Only react on own layer and ignore events invoked by
113     // this component itself
114     if (selEvt.getEmitter() != layerSelModel || selectionChangeCausedByMe)
115     return;
116     // Apply new selection on table (except this event is one of
117     // some more events)
118 alfonx 111 Vector<String> newSelection = layerSelModel.getSelection();
119 alfonx 97 if (newSelection == null)
120     return;
121    
122     // Avoid event circles in valueChanged(..)
123     selectionChangeCausedByMe = true;
124    
125     changeLayerStyle(newSelection);
126    
127     // Danger of event circles in valueChanged(..) banned
128     selectionChangeCausedByMe = false;
129     }
130    
131 alfonx 111 private void changeLayerStyle(final Vector<String> newSelection) {
132 alfonx 97 Style selectionMapStyle = null;
133     try {
134     if (newSelection.isEmpty()) {
135    
136     selectionMapStyle = styledMapLayer.getStyle();
137 alfonx 111 LOGGER.debug("NO SELECTION .. set to original style directly");
138 alfonx 106
139 alfonx 97 } else {
140 alfonx 100 LOGGER.debug("SELECTION .. change style");
141 alfonx 106
142 alfonx 123 // We take Style from the MapLayer that is displayed at the
143     // moment. We do not use the styledMapLayer.getStyle, because in
144     // the atlas, this always return the default style, but
145     // additionaly styles might be selected.
146     // Taking the style from the mapLayer indicated, that we have to
147     // remove any selection rules first.
148     Style originalStyle = mapLayer.getStyle();
149 alfonx 101
150 alfonx 123 // TODO The default style is not good here. We need
151     // .createSelectionStyle(normalStyle, geoObj);
152 alfonx 107 selectionMapStyle = StylingUtil
153 alfonx 106 .createDefaultStyle(styledMapLayer.getGeoObject());
154    
155 alfonx 123 selectionMapStyle.getFeatureTypeStyles()[0]
156     .setName(SELECTION_STYLING);
157    
158 alfonx 111 // Symbolizer sss =
159     // selectionMapStyle.getFeatureTypeStyles()[0].getRules()[0].getSymbolizers()[0];
160     // if (sss instanceof PolygonSymbolizer) {
161     // PolygonSymbolizer ps = (PolygonSymbolizer) sss;
162     // ps.getFill().setOpacity( FilterUtil.FILTER_FAC.literal(0.5));
163     // }
164    
165 alfonx 106 // Rule selectedRule = StylingUtil.STYLE_FACTORY.createRule();
166 alfonx 107 selectionMapStyle.getFeatureTypeStyles()[0].getRules()[0]
167 alfonx 106 .setFilter(new Filter() {
168    
169     @Override
170     public Object accept(FilterVisitor visitor,
171     Object extraData) {
172     return null;
173 alfonx 105 }
174 alfonx 106
175     @Override
176     public boolean evaluate(Object obj) {
177     if (obj instanceof Feature) {
178     Feature f = (Feature) obj;
179 alfonx 123 // TODO BAD CODE! says Martin.. i am fine with it.. well.. not great...
180 alfonx 111 for (String ffID : newSelection) {
181     if (ffID.equals(f.getID()))
182 alfonx 106 return true;
183     }
184     return false;
185    
186     }
187     return false;
188     }
189    
190     });
191    
192 alfonx 123 FeatureTypeStyle[] originalFeatureTypeStyles = originalStyle.getFeatureTypeStyles();
193     FeatureTypeStyle[] newFeatureTypes ;
194     if (originalFeatureTypeStyles[originalFeatureTypeStyles.length-1].getName() != null && originalFeatureTypeStyles[originalFeatureTypeStyles.length-1].getName().equals(SELECTION_STYLING)){
195     newFeatureTypes = Arrays.copyOf(originalFeatureTypeStyles, originalFeatureTypeStyles.length-1);
196     } else {
197     newFeatureTypes = originalFeatureTypeStyles;
198     }
199     //
200     // // REMOVE any Selection_Styling FTS (usually the last one)
201     //
202     // for (FeatureTypeStyle fts : originalFeatureTypeStyles){
203     // if (fts.getName().equals(SELECTION_STYLING)) continue;
204     // newFeatureTypes =
205     //
206     // LangUtil.extendArray(
207     // originalFeatureTypeStyles, selectionMapStyle
208     // .getFeatureTypeStyles());
209     // }
210    
211     // The last FTS is the selection FTS
212     newFeatureTypes = LangUtil.extendArray(newFeatureTypes, selectionMapStyle
213     .getFeatureTypeStyles());
214    
215    
216     selectionMapStyle.setFeatureTypeStyles(newFeatureTypes);
217 alfonx 106
218     // selectionMapStyle.setFeatureTypeStyles(originalStyle.getF)
219    
220 alfonx 101 // Flat copy the style
221 alfonx 106
222     // selectionMapStyle =
223     // StylingUtil.createDefaultStyle(styledMapLayer.getGeoObject());
224    
225 alfonx 97 }
226    
227     mapLayer.setStyle(selectionMapStyle);
228     mapPane.refresh();
229     } catch (Exception e) {
230     LOGGER.error("Error while trying to create a selection style", e);
231     }
232     }
233    
234     @Override
235     public void performMapPaneEvent(JMapPaneEvent e) {
236 alfonx 106
237 alfonx 111 /**
238     * Only listen to FeatureSelectionEvents if the appropriate tool is
239     * selected.
240     */
241     final int selectedTool = toolBar.getSelectedTool();
242     if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
243     && selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
244     && selectedTool != MapPaneToolBar.TOOL_SELECTION_CLEAR
245     && selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
246     return;
247     }
248    
249 alfonx 105 if (!(e instanceof FeatureSelectedEvent)) {
250 alfonx 111 // LOGGER.debug("Ignoring event " + e);
251 alfonx 97 return;
252 alfonx 105 }
253 mojays 109 // only listen to events directly coming from JMapPane
254     // selection (ignore selections from FilterDialog)
255 alfonx 111 if (e.getSourceObject() != this.mapPane)
256     return;
257    
258 alfonx 97 FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
259    
260     // ignore event if it is caused by the DpLayerVectorSelectionModel
261     if (selectionChangeCausedByMe)
262     return;
263    
264 alfonx 111 LOGGER.debug("Do event " + fse);
265    
266 alfonx 97 // Avoid event circles in propertyChange(..)
267     selectionChangeCausedByMe = true;
268    
269 alfonx 111 if (selectedTool == MapPaneToolBar.TOOL_SELECTION_CLEAR) {
270     layerSelModel.clearSelection();
271     } else {
272     Collection<Feature> selectionResult = (Collection<Feature>) fse
273     .getSelectionResult();
274 alfonx 97
275 alfonx 111 // reset the selection of the DpLayerSelectionModel
276     // layerSelModel.setValueIsAdjusting(true);
277 alfonx 97
278 alfonx 111 if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
279     layerSelModel.setValueIsAdjusting(true);
280     for (Feature f : selectionResult) {
281     layerSelModel.addSelection(f.getID());
282     }
283     layerSelModel.setValueIsAdjusting(false);
284     } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
285     layerSelModel.setValueIsAdjusting(true);
286     layerSelModel.clearSelection();
287 alfonx 97
288 alfonx 111 for (Feature f : selectionResult) {
289     layerSelModel.addSelection(f.getID());
290     }
291    
292     LOGGER.debug("Setting selection to " + selectionResult.size());
293     layerSelModel.setValueIsAdjusting(false);
294     } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
295     layerSelModel.setValueIsAdjusting(true);
296     for (Feature f : selectionResult) {
297     layerSelModel.removeSelection(f.getID());
298     }
299     layerSelModel.setValueIsAdjusting(false);
300     }
301     } // els it's not a Clear Selection command
302    
303     // Show selected features in the map, which is not automatically done by
304     // the origin: FeatureSelectedEvent
305 alfonx 97 changeLayerStyle(layerSelModel.getSelection());
306 alfonx 106
307 alfonx 97 // Danger of event circles in propertyChange(..) banned
308     selectionChangeCausedByMe = false;
309     }
310     }

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