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();
//
//                              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;

                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.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	// try {
292	////
293	//// StylingUtil.saveStyleToSLD(newStyle, new File(
294	//// "/home/stefan/Desktop/selection.sld"));
295	// } catch (Exception e) {
296	// }
297	//
298	// // DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
299	// dsv.visit(originalStyle);
300	// Style newStyle = originalStyle;
301
302	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
303	// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
304	mapLayer.setStyle(newStyle);
305
306	replaceRenderer();
307	}
308
309	} catch (Exception e) {
310	LOGGER.error("Error while trying to create a selection style", e);
311	}
312	}
313
314	private void replaceRenderer() {
315	//
316	// // Has to be done before we apply the new Renderer
317	// mapLayer.setStyle(style);
318
319	GTRenderer oldRenderer = mapPane.getRenderer();
320
321	/**
322	* Explicitly putting a new instance of LabelCacheDefault into the
323	* renderer instance, so JMapPane doesn't reuse the old one. This is
324	* very useful when changing the TextSymbolizer with AtlasStyler<br/>
325	* SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
326	* reuse the old Renderer - better to create a new one!
327	*/
328	final GTRenderer newRenderer = GTUtil.createGTRenderer();
329
330	final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
331	rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
332	new LabelCacheImpl());
333
334	newRenderer.setRendererHints(rendererHints);
335	mapPane.setRenderer(newRenderer);
336
337	if (oldRenderer != null) {
338
339	RenderingHints java2DHints = oldRenderer.getJava2DHints();
340	if (java2DHints != null) {
341	newRenderer.setJava2DHints(java2DHints);
342	}
343
344	oldRenderer.setContext(null);
345	oldRenderer = null;
346	}
347
348	mapPane.refresh();
349
350	}
351
352	/**
353	* Used to synchronize {@link FeatureSelectedEvent}s with the
354	* {@link StyledFeatureLayerSelectionModel}
355	*/
356	@Override
357	public void performMapPaneEvent(JMapPaneEvent e) {
358
359	// Ignore event if it is caused by us or the synchronizer is disabled.
360	if (!isEnabled() \|\| selectionChangeCausedByMe)
361	return;
362
363	if (!(e instanceof FeatureSelectedEvent)) {
364	// LOGGER.debug("Ignoring event " + e);
365	return;
366	}
367
368	/**
369	* Only listen to FeatureSelectedEvents if an appropriate tool is
370	* selected.
371	*/
372	final int selectedTool = toolBar.getSelectedTool();
373	if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
374	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
375	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
376	return;
377	}
378
379	// only listen to events directly coming from JMapPane
380	// selection (ignore selections from FilterDialog)
381	if (e.getSourceObject() != this.mapPane)
382	return;
383
384	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
385
386	/**
387	* Checking, that the FeatureSelectedEvent actually contains features
388	* from this layer
389	*/
390	final String sourceID = fse.getSourceLayer().getTitle();
391	final String syncForID = mapLayer.getTitle();
392	if (sourceID != null && syncForID != null
393	&& !sourceID.equals(syncForID)) {
394	LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
395	return;
396	}
397
398	// LOGGER.debug("do event " + fse);
399
400	// Avoid event circles in propertyChange(..)
401	selectionChangeCausedByMe = true;
402
403	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
404	.getSelectionResult();
405	Iterator<SimpleFeature> fi = selectionResult.iterator();
406	try {
407
408	// reset the selection of the DpLayerSelectionModel
409	// layerSelModel.setValueIsAdjusting(true);
410
411	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
412	layerSelModel.setValueIsAdjusting(true);
413
414	for (int fIdx = 0; fi.hasNext(); fIdx++) {
415	SimpleFeature f = fi.next();
416	layerSelModel.addSelection(f.getID());
417	}
418	layerSelModel.setValueIsAdjusting(false);
419	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
420	layerSelModel.setValueIsAdjusting(true);
421	layerSelModel.clearSelection();
422
423	for (int fIdx = 0; fi.hasNext(); fIdx++) {
424	SimpleFeature f = fi.next();
425	layerSelModel.addSelection(f.getID());
426	}
427
428	// LOGGER.debug("Setting selection to " + fi.());
429
430	layerSelModel.setValueIsAdjusting(false);
431	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
432	layerSelModel.setValueIsAdjusting(true);
433	for (int fIdx = 0; fi.hasNext(); fIdx++) {
434	SimpleFeature f = fi.next();
435	layerSelModel.removeSelection(f.getID());
436	}
437	layerSelModel.setValueIsAdjusting(false);
438	}
439
440	} finally {
441	selectionResult.close(fi);
442	}
443
444	// Show selected features in the map, which is not automatically done by
445	// the origin: FeatureSelectedEvent
446	changeLayerStyle(layerSelModel.getSelection());
447
448	// Danger of event circles in propertyChange(..) banned
449	selectionChangeCausedByMe = false;
450	}
451
452	}
Name	Value
svn:eol-style	native
svn:keywords	Id
svn:mime-type	text/plain