geotools/selection/FeatureMapLayerSelectionSynchronizer.java

/*******************************************************************************
 * Copyright (c) 2009 Martin O. J. Schmitz.
 * 
 * This file is part of the SCHMITZM library - a collection of utility 
 * classes based on Java 1.6, focusing (not only) on Java Swing 
 * and the Geotools library.
 * 
 * The SCHMITZM project is hosted at:
 * http://wald.intevation.org/projects/schmitzm/
 * 
 * This program 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 3
 * of the License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License (license.txt)
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * or try this link: http://www.gnu.org/licenses/lgpl.html
 * 
 * Contributors:
 *     Martin O. J. Schmitz - initial API and implementation
 *     Stefan A. Krüger - additional utility classes
 ******************************************************************************/
/** 
 Copyright 2008 Stefan Alfons Krüger 

 atlas-framework - This file is part of the Atlas Framework

 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.
 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.
 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

 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.
 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.
 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.
 **/
package skrueger.geotools.selection;

import java.awt.RenderingHints;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.Vector;

import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionListener;

import org.geotools.feature.FeatureCollection;
import org.geotools.feature.FeatureIterator;
import org.geotools.map.MapLayer;
import org.geotools.renderer.GTRenderer;
import org.geotools.renderer.label.LabelCacheImpl;
import org.geotools.renderer.lite.StreamingRenderer;
import org.geotools.styling.FeatureTypeStyle;
import org.geotools.styling.Style;
import org.geotools.styling.visitor.DuplicatingStyleVisitor;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.filter.identity.FeatureId;

import schmitzm.geotools.FilterUtil;
import schmitzm.geotools.GTUtil;
import schmitzm.geotools.gui.JMapPane;
import schmitzm.geotools.map.event.FeatureSelectedEvent;
import schmitzm.geotools.map.event.JMapPaneEvent;
import schmitzm.geotools.map.event.JMapPaneListener;
import schmitzm.geotools.styling.StylingUtil;
import skrueger.geotools.MapPaneToolBar;
import skrueger.geotools.StyledFeaturesInterface;
import skrueger.geotools.StyledLayerInterface;

/**
 * This class keeps the selection of a (feature) {@link JTable} synchronized
 * with the {@link StyledLayerSelectionModel} of a layer. This is done by
 * implementing:
 * <ul>
 * <li>a {@link PropertyChangeListener} which listens to the
 * {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
 * selection</li>
 * <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
 * accordingly changes the {@link StyledLayerSelectionModel} selection</li>
 * </ul>
 * After creating, the instance of this synchronizer must be added as listener
 * to both, the {@link StyledLayerSelectionModel} and the table's
 * {@link ListSelectionModel}.
 * 
 * @author <a href="mailto:[email protected]">Martin Schmitz</a>
 *         (University of Bonn/Germany)
 */
public class FeatureMapLayerSelectionSynchronizer extends
                StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
                implements JMapPaneListener {
        public static final String SELECTION_STYLING = "SELECTION";
        /**
         * Holds the {@link MapLayer} to keep synchronized with the layer selection
         * model.
         */
        protected final MapLayer mapLayer;
        protected final StyledFeaturesInterface<?> styledLayer;
        protected final JMapPane mapPane;
        private final MapPaneToolBar toolBar;
        private final HashMap<Object, Object> defaultGTRenderingHints;

        /**
         * Creates a new synchronizer
         * 
         * @param layerSelModel
         *            layer selection model to keep synchronized with the
         *            {@link MapLayer}
         * 
         * @param mapLayer
         *            {@link MapLayer} to keep synchronized with.
         */
        public FeatureMapLayerSelectionSynchronizer(
                        StyledFeatureLayerSelectionModel layerSelModel,
                        StyledFeaturesInterface<?> styledLayer, MapLayer mapLayer,
                        JMapPane mapPane, MapPaneToolBar toolBar,
                        HashMap<Object, Object> defaultGTRenderingHints) {

                super(layerSelModel);
                this.styledLayer = styledLayer;

                this.mapLayer = mapLayer;
                this.mapPane = mapPane;
                this.toolBar = toolBar;
                if (defaultGTRenderingHints != null)
                        this.defaultGTRenderingHints = defaultGTRenderingHints;
                else
                        this.defaultGTRenderingHints = new HashMap<Object, Object>();
        }

        /**
         * Called by {@link StyledLayerSelectionModel} when a the selection on other
         * selection components (map, chart, ...) has changed. When calling this
         * 
         * method changes the {@link MapLayer} selection according to the
         * {@link StyledLayerSelectionModel} selection.
         * 
         * @param evt
         *            an event
         */
        @Override
        public void propertyChange(PropertyChangeEvent evt) {

                if (!isEnabled())
                        return;

                if (!(evt instanceof StyledLayerSelectionEvent))
                        return;
                StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
                // Only react on own layer and ignore events invoked by
                // this component itself
                if (selEvt.getEmitter() != layerSelModel || selectionChangeCausedByMe)
                        return;
                // Apply new selection on table (except this event is one of
                // some more events)
                Vector<String> newSelection = layerSelModel.getSelection();
                if (newSelection == null)
                        return;

                // Avoid event circles in valueChanged(..)
                selectionChangeCausedByMe = true;

                changeLayerStyle(newSelection);

                // Danger of event circles in valueChanged(..) banned
                selectionChangeCausedByMe = false;
        }

        /**
         * Changes the Style of the {@link MapLayer} to reflect changes of the
         * selection.
         * 
         * @param newSelection
         *            A {@link Vector} of SimpleFeature-IDs that are selected.
         */
        private void changeLayerStyle(final Vector<String> newSelection) {
                try {

                        Style originalStyle = mapLayer.getStyle();
                        if (newSelection.isEmpty()) {

                                // Check if the Style contains a SELECTION FTS

                                FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
                                                .toArray(new FeatureTypeStyle[] {}).clone();

                                for (FeatureTypeStyle fts : clone) {
                                        if (fts.getName() != null
                                                        && fts.getName().equals(SELECTION_STYLING)) {
                                                originalStyle.featureTypeStyles().remove(fts);

                                                replaceRenderer();
                                                // mapPane.refresh();

                                                return;
                                        }
                                }

                        } else {
                                LOGGER.debug("SELECTION .. change style");

                                // We take Style from the MapLayer that is displayed at the
                                // moment. We do not use the styledLayer.getStyle, because in
                                // the atlas, this always return the default style, but
                                // additional styles might be selected.
                                // Taking the style from the mapLayer indicated, that we have to
                                // remove any selection rules first.

                                FeatureTypeStyle selectionFTStyle = StylingUtil
                                                .createSelectionStyle(styledLayer.getGeoObject());

                                selectionFTStyle.setName(SELECTION_STYLING);

                                /**
                                 * 
                                 * Add a Filter to the selectionMapStyle, so that it is only
                                 * used on objects that are selected. <br/>
                                 * To optimize rendering speed, the filter checks whether more
                                 * than half of the features are selected. If so, the filter is
                                 * inverted to be shorter.
                                 * 
                                 */

                                final FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollectionFiltered = styledLayer
                                                .getFeatureCollectionFiltered();
                                if (newSelection.size() > featureCollectionFiltered.size() / 2) {
                                        FeatureIterator<SimpleFeature> iterator = featureCollectionFiltered
                                                        .features();
                                        Set<FeatureId> antiFids = new HashSet<FeatureId>();
                                        try {
                                                while (iterator.hasNext()) {
                                                        SimpleFeature next = iterator.next();
                                                        if (!newSelection.contains(next.getID()))
                                                                antiFids.add(FilterUtil.FILTER_FAC2
                                                                                .featureId(next.getID()));
                                                }

                                                selectionFTStyle.rules().get(0).setFilter(
                                                                FilterUtil.FILTER_FAC2
                                                                                .not(FilterUtil.FILTER_FAC2
                                                                                                .id(antiFids)));

                                        } finally {
                                                featureCollectionFiltered.close(iterator);
                                        }
                                } else {
                                        Set<FeatureId> fids = new HashSet<FeatureId>();
                                        for (String fid : newSelection) {
                                                fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
                                        }

                                        selectionFTStyle.rules().get(0).setFilter(
                                                        FilterUtil.FILTER_FAC2.id(fids));
                                }

                                // Maybe there has already been another selection
                                // FeatureTypeStyle... Let's replace it...
                                boolean foundAndReplaced = false;
                                for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
                                        if (fts.getName() != null
                                                        && fts.getName().equals(SELECTION_STYLING)) {
                                                foundAndReplaced = true;
                                                fts.rules().clear();
                                                fts.rules().addAll(selectionFTStyle.rules());
                                                break;
                                        }
                                }
                                if (!foundAndReplaced) {
                                        originalStyle.featureTypeStyles().add(selectionFTStyle);
                                }

                                // Refresh the map
                                // mapPane.refresh();

                                DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
                                dsv.visit(originalStyle);
                                Style newStyle = (Style) dsv.getCopy();

//SK-Debug
//                              try {
////                                    
////                            StylingUtil.saveStyleToSLD(newStyle, new File(
////                                            "/home/stefan/Desktop/selection.sld"));
//                              } catch (Exception e) {
//                              }

                                // DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
                                // dsv.visit(originalStyle);
                                // Style newStyle = originalStyle;

                                // Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
                                // newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
                                mapLayer.setStyle(newStyle);

                                replaceRenderer();
                        }

                } catch (Exception e) {
                        LOGGER.error("Error while trying to create a selection style", e);
                }
        }

        private void replaceRenderer() {
                //
                // // Has to be done before we apply the new Renderer
                // mapLayer.setStyle(style);

                GTRenderer oldRenderer = mapPane.getRenderer();

                /**
                 * Explicitly putting a new instance of LabelCacheDefault into the
                 * renderer instance, so JMapPane doesn't reuse the old one. This is
                 * very useful when changing the TextSymbolizer with AtlasStyler<br/>
                 * SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
                 * reuse the old Renderer - better to create a new one!
                 */
                final GTRenderer newRenderer = GTUtil.createGTRenderer();

                final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
                rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
                                new LabelCacheImpl());

                newRenderer.setRendererHints(rendererHints);
                mapPane.setRenderer(newRenderer);

                if (oldRenderer != null) {

                        RenderingHints java2DHints = oldRenderer.getJava2DHints();
                        if (java2DHints != null) {
                                newRenderer.setJava2DHints(java2DHints);
                        }

                        oldRenderer.setContext(null);
                        oldRenderer = null;
                }

                mapPane.refresh();

        }

        /**
         * Used to synchronize {@link FeatureSelectedEvent}s with the
         * {@link StyledFeatureLayerSelectionModel}
         */
        @Override
        public void performMapPaneEvent(JMapPaneEvent e) {

                // Ignore event if it is caused by us or the synchronizer is disabled.
                if (!isEnabled() || selectionChangeCausedByMe)
                        return;

                if (!(e instanceof FeatureSelectedEvent)) {
                        // LOGGER.debug("Ignoring event " + e);
                        return;
                }

                /**
                 * Only listen to FeatureSelectedEvents if an appropriate tool is
                 * selected.
                 */
                final int selectedTool = toolBar.getSelectedTool();
                if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
                                && selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
                                && selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
                        return;
                }

                // only listen to events directly coming from JMapPane
                // selection (ignore selections from FilterDialog)
                if (e.getSourceObject() != this.mapPane)
                        return;


                /**
                 * Checking, that the FeatureSelectedEvent actually contains features
                 * from this layer
                 */
                FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
                final String sourceID = fse.getSourceLayer().getTitle();
                final String syncForID = mapLayer.getTitle();
                if (sourceID != null && syncForID != null
                                && !sourceID.equals(syncForID)) {
                        LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
                        return;
                }

                // LOGGER.debug("do event " + fse);

                // Avoid event circles in propertyChange(..)
                selectionChangeCausedByMe = true;

                final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
                                .getSelectionResult();
                Iterator<SimpleFeature> fi = selectionResult.iterator();
                try {

                        // reset the selection of the DpLayerSelectionModel
                        // layerSelModel.setValueIsAdjusting(true);

                        if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
                                layerSelModel.setValueIsAdjusting(true);

                                for (int fIdx = 0; fi.hasNext(); fIdx++) {
                                        SimpleFeature f = fi.next();
                                        layerSelModel.addSelection(f.getID());
                                }
                                layerSelModel.setValueIsAdjusting(false);
                        } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
                                layerSelModel.setValueIsAdjusting(true);
                                layerSelModel.clearSelection();

                                for (int fIdx = 0; fi.hasNext(); fIdx++) {
                                        SimpleFeature f = fi.next();
                                        layerSelModel.addSelection(f.getID());
                                }

                                // LOGGER.debug("Setting selection to " + fi.());

                                layerSelModel.setValueIsAdjusting(false);
                        } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
                                layerSelModel.setValueIsAdjusting(true);
                                for (int fIdx = 0; fi.hasNext(); fIdx++) {
                                        SimpleFeature f = fi.next();
                                        layerSelModel.removeSelection(f.getID());
                                }
                                layerSelModel.setValueIsAdjusting(false);
                        }

                } finally {
                        selectionResult.close(fi);
                }

                // Show selected features in the map, which is not automatically done by
                // the origin: FeatureSelectedEvent
                changeLayerStyle(layerSelModel.getSelection());

                // Danger of event circles in propertyChange(..) banned
                selectionChangeCausedByMe = false;
        }

}
1	/*******************************************************************************
2	* Copyright (c) 2009 Martin O. J. Schmitz.
3	*
4	* This file is part of the SCHMITZM library - a collection of utility
5	* classes based on Java 1.6, focusing (not only) on Java Swing
6	* and the Geotools library.
7	*
8	* The SCHMITZM project is hosted at:
9	* http://wald.intevation.org/projects/schmitzm/
10	*
11	* This program is free software; you can redistribute it and/or
12	* modify it under the terms of the GNU Lesser General Public License
13	* as published by the Free Software Foundation; either version 3
14	* of the License, or (at your option) any later version.
15	*
16	* This program is distributed in the hope that it will be useful,
17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19	* GNU General Public License for more details.
20	*
21	* You should have received a copy of the GNU Lesser General Public License (license.txt)
22	* along with this program; if not, write to the Free Software
23	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24	* or try this link: http://www.gnu.org/licenses/lgpl.html
25	*
26	* Contributors:
27	* Martin O. J. Schmitz - initial API and implementation
28	* Stefan A. Krüger - additional utility classes
29	******************************************************************************/
30	/**
31	Copyright 2008 Stefan Alfons Krüger
32
33	atlas-framework - This file is part of the Atlas Framework
34
35	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.
36	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.
37	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
38
39	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.
40	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.
41	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.
42	**/
43	package skrueger.geotools.selection;
44
45	import java.awt.RenderingHints;
46	import java.beans.PropertyChangeEvent;
47	import java.beans.PropertyChangeListener;
48	import java.io.File;
49	import java.util.HashMap;
50	import java.util.HashSet;
51	import java.util.Iterator;
52	import java.util.Set;
53	import java.util.Vector;
54
55	import javax.swing.JTable;
56	import javax.swing.ListSelectionModel;
57	import javax.swing.event.ListSelectionListener;
58
59	import org.geotools.feature.FeatureCollection;
60	import org.geotools.feature.FeatureIterator;
61	import org.geotools.map.MapLayer;
62	import org.geotools.renderer.GTRenderer;
63	import org.geotools.renderer.label.LabelCacheImpl;
64	import org.geotools.renderer.lite.StreamingRenderer;
65	import org.geotools.styling.FeatureTypeStyle;
66	import org.geotools.styling.Style;
67	import org.geotools.styling.visitor.DuplicatingStyleVisitor;
68	import org.opengis.feature.simple.SimpleFeature;
69	import org.opengis.feature.simple.SimpleFeatureType;
70	import org.opengis.filter.identity.FeatureId;
71
72	import schmitzm.geotools.FilterUtil;
73	import schmitzm.geotools.GTUtil;
74	import schmitzm.geotools.gui.JMapPane;
75	import schmitzm.geotools.map.event.FeatureSelectedEvent;
76	import schmitzm.geotools.map.event.JMapPaneEvent;
77	import schmitzm.geotools.map.event.JMapPaneListener;
78	import schmitzm.geotools.styling.StylingUtil;
79	import skrueger.geotools.MapPaneToolBar;
80	import skrueger.geotools.StyledFeaturesInterface;
81	import skrueger.geotools.StyledLayerInterface;
82
83	/**
84	* This class keeps the selection of a (feature) {@link JTable} synchronized
85	* with the {@link StyledLayerSelectionModel} of a layer. This is done by
86	* implementing:
87	* <ul>
88	* <li>a {@link PropertyChangeListener} which listens to the
89	* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
90	* selection</li>
91	* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
92	* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
93	* </ul>
94	* After creating, the instance of this synchronizer must be added as listener
95	* to both, the {@link StyledLayerSelectionModel} and the table's
96	* {@link ListSelectionModel}.
97	*
98	* @author <a href="mailto:[email protected]">Martin Schmitz</a>
99	* (University of Bonn/Germany)
100	*/
101	public class FeatureMapLayerSelectionSynchronizer extends
102	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
103	implements JMapPaneListener {
104	public static final String SELECTION_STYLING = "SELECTION";
105	/**
106	* Holds the {@link MapLayer} to keep synchronized with the layer selection
107	* model.
108	*/
109	protected final MapLayer mapLayer;
110	protected final StyledFeaturesInterface<?> styledLayer;
111	protected final JMapPane mapPane;
112	private final MapPaneToolBar toolBar;
113	private final HashMap<Object, Object> defaultGTRenderingHints;
114
115	/**
116	* Creates a new synchronizer
117	*
118	* @param layerSelModel
119	* layer selection model to keep synchronized with the
120	* {@link MapLayer}
121	*
122	* @param mapLayer
123	* {@link MapLayer} to keep synchronized with.
124	*/
125	public FeatureMapLayerSelectionSynchronizer(
126	StyledFeatureLayerSelectionModel layerSelModel,
127	StyledFeaturesInterface<?> styledLayer, MapLayer mapLayer,
128	JMapPane mapPane, MapPaneToolBar toolBar,
129	HashMap<Object, Object> defaultGTRenderingHints) {
130
131	super(layerSelModel);
132	this.styledLayer = styledLayer;
133
134	this.mapLayer = mapLayer;
135	this.mapPane = mapPane;
136	this.toolBar = toolBar;
137	if (defaultGTRenderingHints != null)
138	this.defaultGTRenderingHints = defaultGTRenderingHints;
139	else
140	this.defaultGTRenderingHints = new HashMap<Object, Object>();
141	}
142
143	/**
144	* Called by {@link StyledLayerSelectionModel} when a the selection on other
145	* selection components (map, chart, ...) has changed. When calling this
146	*
147	* method changes the {@link MapLayer} selection according to the
148	* {@link StyledLayerSelectionModel} selection.
149	*
150	* @param evt
151	* an event
152	*/
153	@Override
154	public void propertyChange(PropertyChangeEvent evt) {
155
156	if (!isEnabled())
157	return;
158
159	if (!(evt instanceof StyledLayerSelectionEvent))
160	return;
161	StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
162	// Only react on own layer and ignore events invoked by
163	// this component itself
164	if (selEvt.getEmitter() != layerSelModel \|\| selectionChangeCausedByMe)
165	return;
166	// Apply new selection on table (except this event is one of
167	// some more events)
168	Vector<String> newSelection = layerSelModel.getSelection();
169	if (newSelection == null)
170	return;
171
172	// Avoid event circles in valueChanged(..)
173	selectionChangeCausedByMe = true;
174
175	changeLayerStyle(newSelection);
176
177	// Danger of event circles in valueChanged(..) banned
178	selectionChangeCausedByMe = false;
179	}
180
181	/**
182	* Changes the Style of the {@link MapLayer} to reflect changes of the
183	* selection.
184	*
185	* @param newSelection
186	* A {@link Vector} of SimpleFeature-IDs that are selected.
187	*/
188	private void changeLayerStyle(final Vector<String> newSelection) {
189	try {
190
191	Style originalStyle = mapLayer.getStyle();
192	if (newSelection.isEmpty()) {
193
194	// Check if the Style contains a SELECTION FTS
195
196	FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
197	.toArray(new FeatureTypeStyle[] {}).clone();
198
199	for (FeatureTypeStyle fts : clone) {
200	if (fts.getName() != null
201	&& fts.getName().equals(SELECTION_STYLING)) {
202	originalStyle.featureTypeStyles().remove(fts);
203
204	replaceRenderer();
205	// mapPane.refresh();
206
207	return;
208	}
209	}
210
211	} else {
212	LOGGER.debug("SELECTION .. change style");
213
214	// We take Style from the MapLayer that is displayed at the
215	// moment. We do not use the styledLayer.getStyle, because in
216	// the atlas, this always return the default style, but
217	// additional styles might be selected.
218	// Taking the style from the mapLayer indicated, that we have to
219	// remove any selection rules first.
220
221	FeatureTypeStyle selectionFTStyle = StylingUtil
222	.createSelectionStyle(styledLayer.getGeoObject());
223
224	selectionFTStyle.setName(SELECTION_STYLING);
225
226	/**
227	*
228	* Add a Filter to the selectionMapStyle, so that it is only
229	* used on objects that are selected. <br/>
230	* To optimize rendering speed, the filter checks whether more
231	* than half of the features are selected. If so, the filter is
232	* inverted to be shorter.
233	*
234	*/
235
236	final FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollectionFiltered = styledLayer
237	.getFeatureCollectionFiltered();
238	if (newSelection.size() > featureCollectionFiltered.size() / 2) {
239	FeatureIterator<SimpleFeature> iterator = featureCollectionFiltered
240	.features();
241	Set<FeatureId> antiFids = new HashSet<FeatureId>();
242	try {
243	while (iterator.hasNext()) {
244	SimpleFeature next = iterator.next();
245	if (!newSelection.contains(next.getID()))
246	antiFids.add(FilterUtil.FILTER_FAC2
247	.featureId(next.getID()));
248	}
249
250	selectionFTStyle.rules().get(0).setFilter(
251	FilterUtil.FILTER_FAC2
252	.not(FilterUtil.FILTER_FAC2
253	.id(antiFids)));
254
255	} finally {
256	featureCollectionFiltered.close(iterator);
257	}
258	} else {
259	Set<FeatureId> fids = new HashSet<FeatureId>();
260	for (String fid : newSelection) {
261	fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
262	}
263
264	selectionFTStyle.rules().get(0).setFilter(
265	FilterUtil.FILTER_FAC2.id(fids));
266	}
267
268	// Maybe there has already been another selection
269	// FeatureTypeStyle... Let's replace it...
270	boolean foundAndReplaced = false;
271	for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
272	if (fts.getName() != null
273	&& fts.getName().equals(SELECTION_STYLING)) {
274	foundAndReplaced = true;
275	fts.rules().clear();
276	fts.rules().addAll(selectionFTStyle.rules());
277	break;
278	}
279	}
280	if (!foundAndReplaced) {
281	originalStyle.featureTypeStyles().add(selectionFTStyle);
282	}
283
284	// Refresh the map
285	// mapPane.refresh();
286
287	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
288	dsv.visit(originalStyle);
289	Style newStyle = (Style) dsv.getCopy();
290
291	//SK-Debug
292	// try {
293	////
294	//// StylingUtil.saveStyleToSLD(newStyle, new File(
295	//// "/home/stefan/Desktop/selection.sld"));
296	// } catch (Exception e) {
297	// }
298
299	// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
300	// dsv.visit(originalStyle);
301	// Style newStyle = originalStyle;
302
303	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
304	// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
305	mapLayer.setStyle(newStyle);
306
307	replaceRenderer();
308	}
309
310	} catch (Exception e) {
311	LOGGER.error("Error while trying to create a selection style", e);
312	}
313	}
314
315	private void replaceRenderer() {
316	//
317	// // Has to be done before we apply the new Renderer
318	// mapLayer.setStyle(style);
319
320	GTRenderer oldRenderer = mapPane.getRenderer();
321
322	/**
323	* Explicitly putting a new instance of LabelCacheDefault into the
324	* renderer instance, so JMapPane doesn't reuse the old one. This is
325	* very useful when changing the TextSymbolizer with AtlasStyler<br/>
326	* SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
327	* reuse the old Renderer - better to create a new one!
328	*/
329	final GTRenderer newRenderer = GTUtil.createGTRenderer();
330
331	final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
332	rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
333	new LabelCacheImpl());
334
335	newRenderer.setRendererHints(rendererHints);
336	mapPane.setRenderer(newRenderer);
337
338	if (oldRenderer != null) {
339
340	RenderingHints java2DHints = oldRenderer.getJava2DHints();
341	if (java2DHints != null) {
342	newRenderer.setJava2DHints(java2DHints);
343	}
344
345	oldRenderer.setContext(null);
346	oldRenderer = null;
347	}
348
349	mapPane.refresh();
350
351	}
352
353	/**
354	* Used to synchronize {@link FeatureSelectedEvent}s with the
355	* {@link StyledFeatureLayerSelectionModel}
356	*/
357	@Override
358	public void performMapPaneEvent(JMapPaneEvent e) {
359
360	// Ignore event if it is caused by us or the synchronizer is disabled.
361	if (!isEnabled() \|\| selectionChangeCausedByMe)
362	return;
363
364	if (!(e instanceof FeatureSelectedEvent)) {
365	// LOGGER.debug("Ignoring event " + e);
366	return;
367	}
368
369	/**
370	* Only listen to FeatureSelectedEvents if an appropriate tool is
371	* selected.
372	*/
373	final int selectedTool = toolBar.getSelectedTool();
374	if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
375	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
376	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
377	return;
378	}
379
380	// only listen to events directly coming from JMapPane
381	// selection (ignore selections from FilterDialog)
382	if (e.getSourceObject() != this.mapPane)
383	return;
384
385
386	/**
387	* Checking, that the FeatureSelectedEvent actually contains features
388	* from this layer
389	*/
390	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
391	final String sourceID = fse.getSourceLayer().getTitle();
392	final String syncForID = mapLayer.getTitle();
393	if (sourceID != null && syncForID != null
394	&& !sourceID.equals(syncForID)) {
395	LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
396	return;
397	}
398
399	// LOGGER.debug("do event " + fse);
400
401	// Avoid event circles in propertyChange(..)
402	selectionChangeCausedByMe = true;
403
404	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
405	.getSelectionResult();
406	Iterator<SimpleFeature> fi = selectionResult.iterator();
407	try {
408
409	// reset the selection of the DpLayerSelectionModel
410	// layerSelModel.setValueIsAdjusting(true);
411
412	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
413	layerSelModel.setValueIsAdjusting(true);
414
415	for (int fIdx = 0; fi.hasNext(); fIdx++) {
416	SimpleFeature f = fi.next();
417	layerSelModel.addSelection(f.getID());
418	}
419	layerSelModel.setValueIsAdjusting(false);
420	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
421	layerSelModel.setValueIsAdjusting(true);
422	layerSelModel.clearSelection();
423
424	for (int fIdx = 0; fi.hasNext(); fIdx++) {
425	SimpleFeature f = fi.next();
426	layerSelModel.addSelection(f.getID());
427	}
428
429	// LOGGER.debug("Setting selection to " + fi.());
430
431	layerSelModel.setValueIsAdjusting(false);
432	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
433	layerSelModel.setValueIsAdjusting(true);
434	for (int fIdx = 0; fi.hasNext(); fIdx++) {
435	SimpleFeature f = fi.next();
436	layerSelModel.removeSelection(f.getID());
437	}
438	layerSelModel.setValueIsAdjusting(false);
439	}
440
441	} finally {
442	selectionResult.close(fi);
443	}
444
445	// Show selected features in the map, which is not automatically done by
446	// the origin: FeatureSelectedEvent
447	changeLayerStyle(layerSelModel.getSelection());
448
449	// Danger of event circles in propertyChange(..) banned
450	selectionChangeCausedByMe = false;
451	}
452
453	}
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