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.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.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.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 StyledLayerInterface<?> 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,
                        StyledLayerInterface<?> 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/>
                                 * 
                                 * Note 1:<br/>
                                 * It is NEVER allowed to GeoTools extend Filter () { .. } (and
                                 * write tests into the evaluate block). Especially for the
                                 * ShapeFileRenderer, we may only use a geotools Filter.<br/>
                                 * 
                                 * Note 2:<br/>
                                 * The FilterUtil.FILTER_FAC2.id(fids) wants a set of
                                 * FeatureId-Objects!
                                 */

                                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();

                                // 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;

                FeatureSelectedEvent fse = (FeatureSelectedEvent) e;

                /**
                 * Checking, that the FeatureSelectedEvent actually contains features
                 * from this layer
                 */
                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.util.HashMap;
49	import java.util.HashSet;
50	import java.util.Iterator;
51	import java.util.Set;
52	import java.util.Vector;
53
54	import javax.swing.JTable;
55	import javax.swing.ListSelectionModel;
56	import javax.swing.event.ListSelectionListener;
57
58	import org.geotools.feature.FeatureCollection;
59	import org.geotools.map.MapLayer;
60	import org.geotools.renderer.GTRenderer;
61	import org.geotools.renderer.label.LabelCacheImpl;
62	import org.geotools.renderer.lite.StreamingRenderer;
63	import org.geotools.styling.FeatureTypeStyle;
64	import org.geotools.styling.Style;
65	import org.geotools.styling.visitor.DuplicatingStyleVisitor;
66	import org.opengis.feature.simple.SimpleFeature;
67	import org.opengis.feature.simple.SimpleFeatureType;
68	import org.opengis.filter.identity.FeatureId;
69
70	import schmitzm.geotools.FilterUtil;
71	import schmitzm.geotools.GTUtil;
72	import schmitzm.geotools.gui.JMapPane;
73	import schmitzm.geotools.map.event.FeatureSelectedEvent;
74	import schmitzm.geotools.map.event.JMapPaneEvent;
75	import schmitzm.geotools.map.event.JMapPaneListener;
76	import schmitzm.geotools.styling.StylingUtil;
77	import skrueger.geotools.MapPaneToolBar;
78	import skrueger.geotools.StyledLayerInterface;
79
80	/**
81	* This class keeps the selection of a (feature) {@link JTable} synchronized
82	* with the {@link StyledLayerSelectionModel} of a layer. This is done by
83	* implementing:
84	* <ul>
85	* <li>a {@link PropertyChangeListener} which listens to the
86	* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
87	* selection</li>
88	* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
89	* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
90	* </ul>
91	* After creating, the instance of this synchronizer must be added as listener
92	* to both, the {@link StyledLayerSelectionModel} and the table's
93	* {@link ListSelectionModel}.
94	*
95	* @author <a href="mailto:[email protected]">Martin Schmitz</a>
96	* (University of Bonn/Germany)
97	*/
98	public class FeatureMapLayerSelectionSynchronizer extends
99	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
100	implements JMapPaneListener {
101	public static final String SELECTION_STYLING = "SELECTION";
102	/**
103	* Holds the {@link MapLayer} to keep synchronized with the layer selection
104	* model.
105	*/
106	protected final MapLayer mapLayer;
107	protected final StyledLayerInterface<?> styledLayer;
108	protected final JMapPane mapPane;
109	private final MapPaneToolBar toolBar;
110	private final HashMap<Object, Object> defaultGTRenderingHints;
111
112	/**
113	* Creates a new synchronizer
114	*
115	* @param layerSelModel
116	* layer selection model to keep synchronized with the
117	* {@link MapLayer}
118	*
119	* @param mapLayer
120	* {@link MapLayer} to keep synchronized with.
121	*/
122	public FeatureMapLayerSelectionSynchronizer(
123	StyledFeatureLayerSelectionModel layerSelModel,
124	StyledLayerInterface<?> styledLayer, MapLayer mapLayer,
125	JMapPane mapPane, MapPaneToolBar toolBar,
126	HashMap<Object, Object> defaultGTRenderingHints) {
127
128	super(layerSelModel);
129	this.styledLayer = styledLayer;
130
131	this.mapLayer = mapLayer;
132	this.mapPane = mapPane;
133	this.toolBar = toolBar;
134	if (defaultGTRenderingHints != null)
135	this.defaultGTRenderingHints = defaultGTRenderingHints;
136	else
137	this.defaultGTRenderingHints = new HashMap<Object, Object>();
138	}
139
140	/**
141	* Called by {@link StyledLayerSelectionModel} when a the selection on other
142	* selection components (map, chart, ...) has changed. When calling this
143	*
144	* method changes the {@link MapLayer} selection according to the
145	* {@link StyledLayerSelectionModel} selection.
146	*
147	* @param evt
148	* an event
149	*/
150	@Override
151	public void propertyChange(PropertyChangeEvent evt) {
152
153	if (!isEnabled())
154	return;
155
156	if (!(evt instanceof StyledLayerSelectionEvent))
157	return;
158	StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
159	// Only react on own layer and ignore events invoked by
160	// this component itself
161	if (selEvt.getEmitter() != layerSelModel \|\| selectionChangeCausedByMe)
162	return;
163	// Apply new selection on table (except this event is one of
164	// some more events)
165	Vector<String> newSelection = layerSelModel.getSelection();
166	if (newSelection == null)
167	return;
168
169	// Avoid event circles in valueChanged(..)
170	selectionChangeCausedByMe = true;
171
172	changeLayerStyle(newSelection);
173
174	// Danger of event circles in valueChanged(..) banned
175	selectionChangeCausedByMe = false;
176	}
177
178	/**
179	* Changes the Style of the {@link MapLayer} to reflect changes of the
180	* selection.
181	*
182	* @param newSelection
183	* A {@link Vector} of SimpleFeature-IDs that are selected.
184	*/
185	private void changeLayerStyle(final Vector<String> newSelection) {
186	try {
187
188	Style originalStyle = mapLayer.getStyle();
189	if (newSelection.isEmpty()) {
190
191	// Check if the Style contains a SELECTION FTS
192
193	FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
194	.toArray(new FeatureTypeStyle[] {}).clone();
195
196	for (FeatureTypeStyle fts : clone) {
197	if (fts.getName() != null
198	&& fts.getName().equals(SELECTION_STYLING)) {
199	originalStyle.featureTypeStyles().remove(fts);
200
201	replaceRenderer();
202	// mapPane.refresh();
203
204	return;
205	}
206	}
207
208	} else {
209	LOGGER.debug("SELECTION .. change style");
210
211	// We take Style from the MapLayer that is displayed at the
212	// moment. We do not use the styledLayer.getStyle, because in
213	// the atlas, this always return the default style, but
214	// additional styles might be selected.
215	// Taking the style from the mapLayer indicated, that we have to
216	// remove any selection rules first.
217
218	FeatureTypeStyle selectionFTStyle = StylingUtil
219	.createSelectionStyle(styledLayer.getGeoObject());
220
221	selectionFTStyle.setName(SELECTION_STYLING);
222
223	/**
224	*
225	* Add a Filter to the selectionMapStyle, so that it is only
226	* used on objects that are selected. <br/>
227	*
228	* Note 1:<br/>
229	* It is NEVER allowed to GeoTools extend Filter () { .. } (and
230	* write tests into the evaluate block). Especially for the
231	* ShapeFileRenderer, we may only use a geotools Filter.<br/>
232	*
233	* Note 2:<br/>
234	* The FilterUtil.FILTER_FAC2.id(fids) wants a set of
235	* FeatureId-Objects!
236	*/
237
238	Set<FeatureId> fids = new HashSet<FeatureId>();
239	for (String fid : newSelection) {
240	fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
241	}
242
243	selectionFTStyle.rules().get(0).setFilter(
244	FilterUtil.FILTER_FAC2.id(fids));
245
246	// Maybe there has already been another selection
247	// FeatureTypeStyle... Let's replace it...
248	boolean foundAndReplaced = false;
249	for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
250	if (fts.getName() != null
251	&& fts.getName().equals(SELECTION_STYLING)) {
252	foundAndReplaced = true;
253	fts.rules().clear();
254	fts.rules().addAll(selectionFTStyle.rules());
255	break;
256	}
257	}
258	if (!foundAndReplaced) {
259	originalStyle.featureTypeStyles().add(selectionFTStyle);
260	}
261
262	// Refresh the map
263	// mapPane.refresh();
264
265	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
266	dsv.visit(originalStyle);
267	Style newStyle = (Style) dsv.getCopy();
268
269	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
270	// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
271	mapLayer.setStyle(newStyle);
272
273	replaceRenderer();
274	}
275
276	} catch (Exception e) {
277	LOGGER.error("Error while trying to create a selection style", e);
278	}
279	}
280
281	private void replaceRenderer() {
282	//
283	// // Has to be done before we apply the new Renderer
284	// mapLayer.setStyle(style);
285
286	GTRenderer oldRenderer = mapPane.getRenderer();
287
288	/**
289	* Explicitly putting a new instance of LabelCacheDefault into the
290	* renderer instance, so JMapPane doesn't reuse the old one. This is
291	* very useful when changing the TextSymbolizer with AtlasStyler<br/>
292	* SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
293	* reuse the old Renderer - better to create a new one!
294	*/
295	final GTRenderer newRenderer = GTUtil.createGTRenderer();
296
297	final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
298	rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
299	new LabelCacheImpl());
300
301	newRenderer.setRendererHints(rendererHints);
302	mapPane.setRenderer(newRenderer);
303
304	if (oldRenderer != null) {
305
306	RenderingHints java2DHints = oldRenderer.getJava2DHints();
307	if (java2DHints != null) {
308	newRenderer.setJava2DHints(java2DHints);
309	}
310
311	oldRenderer.setContext(null);
312	oldRenderer = null;
313	}
314
315	mapPane.refresh();
316
317	}
318
319	/**
320	* Used to synchronize {@link FeatureSelectedEvent}s with the
321	* {@link StyledFeatureLayerSelectionModel}
322	*/
323	@Override
324	public void performMapPaneEvent(JMapPaneEvent e) {
325
326	// Ignore event if it is caused by us or the synchronizer is disabled.
327	if (!isEnabled() \|\| selectionChangeCausedByMe)
328	return;
329
330	if (!(e instanceof FeatureSelectedEvent)) {
331	// LOGGER.debug("Ignoring event " + e);
332	return;
333	}
334
335	/**
336	* Only listen to FeatureSelectedEvents if an appropriate tool is
337	* selected.
338	*/
339	final int selectedTool = toolBar.getSelectedTool();
340	if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
341	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
342	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
343	return;
344	}
345
346	// only listen to events directly coming from JMapPane
347	// selection (ignore selections from FilterDialog)
348	if (e.getSourceObject() != this.mapPane)
349	return;
350
351	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
352
353	/**
354	* Checking, that the FeatureSelectedEvent actually contains features
355	* from this layer
356	*/
357	final String sourceID = fse.getSourceLayer().getTitle();
358	final String syncForID = mapLayer.getTitle();
359	if (sourceID != null && syncForID != null
360	&& !sourceID.equals(syncForID)) {
361	LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
362	return;
363	}
364
365	LOGGER.debug("do event " + fse);
366
367	// Avoid event circles in propertyChange(..)
368	selectionChangeCausedByMe = true;
369
370	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
371	.getSelectionResult();
372	Iterator<SimpleFeature> fi = selectionResult.iterator();
373	try {
374
375	// reset the selection of the DpLayerSelectionModel
376	// layerSelModel.setValueIsAdjusting(true);
377
378	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
379	layerSelModel.setValueIsAdjusting(true);
380
381	for (int fIdx = 0; fi.hasNext(); fIdx++) {
382	SimpleFeature f = fi.next();
383	layerSelModel.addSelection(f.getID());
384	}
385	layerSelModel.setValueIsAdjusting(false);
386	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
387	layerSelModel.setValueIsAdjusting(true);
388	layerSelModel.clearSelection();
389
390	for (int fIdx = 0; fi.hasNext(); fIdx++) {
391	SimpleFeature f = fi.next();
392	layerSelModel.addSelection(f.getID());
393	}
394
395	// LOGGER.debug("Setting selection to " + fi.());
396
397	layerSelModel.setValueIsAdjusting(false);
398	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
399	layerSelModel.setValueIsAdjusting(true);
400	for (int fIdx = 0; fi.hasNext(); fIdx++) {
401	SimpleFeature f = fi.next();
402	layerSelModel.removeSelection(f.getID());
403	}
404	layerSelModel.setValueIsAdjusting(false);
405	}
406
407	} finally {
408	selectionResult.close(fi);
409	}
410
411	// Show selected features in the map, which is not automatically done by
412	// the origin: FeatureSelectedEvent
413	changeLayerStyle(layerSelModel.getSelection());
414
415	// Danger of event circles in propertyChange(..) banned
416	selectionChangeCausedByMe = false;
417	}
418
419	}
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