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.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
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.filter.FidFilterImpl;
import org.geotools.map.MapLayer;
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.Filter;
import org.opengis.filter.Not;
import org.opengis.filter.identity.FeatureId;

import schmitzm.geotools.FilterUtil;
import schmitzm.geotools.gui.SelectableXMapPane;
import schmitzm.geotools.map.event.FeatureSelectedEvent;
import schmitzm.geotools.map.event.MapPaneEvent;
import schmitzm.geotools.map.event.JMapPaneListener;
import schmitzm.geotools.styling.StylingUtil;
import skrueger.geotools.MapPaneToolBar;
import skrueger.geotools.StyledFeaturesInterface;

/**
 * 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 SelectableXMapPane mapPane;
        private final MapPaneToolBar toolBar;

        /**
         * 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,
                        SelectableXMapPane mapPane, MapPaneToolBar toolBar) {

                super(layerSelModel);
                this.styledLayer = styledLayer;

                this.mapLayer = mapLayer;
                this.mapPane = mapPane;
                this.toolBar = toolBar;
        }

        /**
         * 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");

                                // Saving a repaint if the selection didn't change
                                if (!selectionChanged(newSelection, originalStyle)) {
                                        return;
                                }

                                // 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);
                }
        }

        /**
         * Analyses whether the selection has changed in comparison to the selection
         * stored in the mapLayer.Style
         * 
         * @param newSelection
         * @param originalStyle
         * @return
         */
        private boolean selectionChanged(Vector<String> newSelection,
                        Style originalStyle) {

                boolean SELECTION_STYLING_foundInMapStyle = false;

                /**
                 * testing, whether the selection really changed. If not, we can save
                 * one paint!
                 */
                for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {

                        if (fts.getName() != null
                                        && fts.getName().equals(SELECTION_STYLING)) {

                                SELECTION_STYLING_foundInMapStyle = true;

                                Filter filter = fts.rules().get(0).getFilter();
                                if (filter instanceof Not) {
                                        FidFilterImpl antiOrigFidsFilter = (FidFilterImpl) ((Not) filter)
                                                        .getFilter();

                                        // Check one way
                                        final Set<String> antiFids = antiOrigFidsFilter
                                                        .getFidsSet();

                                        if (antiFids.isEmpty() && !newSelection.isEmpty())
                                                return true;

                                        for (String fid : antiFids) {
                                                if (newSelection.contains(fid)) {
                                                        return true;
                                                }
                                        }

                                        // Check the other way
                                        for (String fid : newSelection) {
                                                if (antiFids.contains(fid)) {
                                                        return true;
                                                }
                                        }

                                } else {
                                        FidFilterImpl origFidsFilter = (FidFilterImpl) filter;

                                        // Check one way
                                        final Set<String> fids = origFidsFilter.getFidsSet();

                                        if (fids.isEmpty() && newSelection.isEmpty())
                                                return false;
                                        if (fids.size() != newSelection.size())
                                                return true;

                                        for (String fid : fids) {
                                                if (!newSelection.contains(fid)) {
                                                        return true;
                                                }
                                        }

                                        // Check the other way
                                        for (String fid : newSelection) {
                                                if (!fids.contains(fid)) {
                                                        return true;
                                                }
                                        }

                                }

                                break;
                        }
                }

                if (!SELECTION_STYLING_foundInMapStyle && !newSelection.isEmpty())
                        return true;

                return false;
        }

        /**
         * Replaces the local renderer 
         */
        private void replaceRenderer() {
//              //
//              // // Has to be done before we apply the new Renderer
//              // mapLayer.setStyle(style);
//
//              GTRenderer oldRenderer = mapPane.getLocalRenderer();
//
//              /**
//               * 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.setLocalRenderer(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(MapPaneEvent 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	alfonx	244	/*******************************************************************************
2			* Copyright (c) 2009 Martin O. J. Schmitz.
3			*
4			* This file is part of the SCHMITZM library - a collection of utility
5	alfonx	256	* classes based on Java 1.6, focusing (not only) on Java Swing
6	alfonx	244	* 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	alfonx	97	/**
31			Copyright 2008 Stefan Alfons Krüger
32	alfonx	409
33	alfonx	97	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.beans.PropertyChangeEvent;
46			import java.beans.PropertyChangeListener;
47	alfonx	489	import java.io.File;
48	alfonx	158	import java.util.HashSet;
49	alfonx	409	import java.util.Iterator;
50	alfonx	158	import java.util.Set;
51	alfonx	97	import java.util.Vector;
52
53			import javax.swing.JTable;
54			import javax.swing.ListSelectionModel;
55			import javax.swing.event.ListSelectionListener;
56
57	alfonx	455	import org.geotools.feature.FeatureCollection;
58	alfonx	489	import org.geotools.feature.FeatureIterator;
59	alfonx	500	import org.geotools.filter.FidFilterImpl;
60	alfonx	97	import org.geotools.map.MapLayer;
61	alfonx	123	import org.geotools.styling.FeatureTypeStyle;
62	alfonx	97	import org.geotools.styling.Style;
63	alfonx	419	import org.geotools.styling.visitor.DuplicatingStyleVisitor;
64	mojays	325	import org.opengis.feature.simple.SimpleFeature;
65	alfonx	455	import org.opengis.feature.simple.SimpleFeatureType;
66	alfonx	500	import org.opengis.filter.Filter;
67			import org.opengis.filter.Not;
68	alfonx	158	import org.opengis.filter.identity.FeatureId;
69	alfonx	97
70	alfonx	158	import schmitzm.geotools.FilterUtil;
71	alfonx	509	import schmitzm.geotools.gui.SelectableXMapPane;
72	alfonx	97	import schmitzm.geotools.map.event.FeatureSelectedEvent;
73	alfonx	509	import schmitzm.geotools.map.event.MapPaneEvent;
74	alfonx	97	import schmitzm.geotools.map.event.JMapPaneListener;
75			import schmitzm.geotools.styling.StylingUtil;
76	alfonx	111	import skrueger.geotools.MapPaneToolBar;
77	alfonx	489	import skrueger.geotools.StyledFeaturesInterface;
78	alfonx	97
79			/**
80			* This class keeps the selection of a (feature) {@link JTable} synchronized
81			* with the {@link StyledLayerSelectionModel} of a layer. This is done by
82			* implementing:
83			* <ul>
84			* <li>a {@link PropertyChangeListener} which listens to the
85			* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
86			* selection</li>
87			* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
88			* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
89			* </ul>
90			* After creating, the instance of this synchronizer must be added as listener
91			* to both, the {@link StyledLayerSelectionModel} and the table's
92			* {@link ListSelectionModel}.
93			*
94			* @author <a href="mailto:[email protected]">Martin Schmitz</a>
95			* (University of Bonn/Germany)
96			*/
97			public class FeatureMapLayerSelectionSynchronizer extends
98	alfonx	106	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
99			implements JMapPaneListener {
100	alfonx	111	public static final String SELECTION_STYLING = "SELECTION";
101	alfonx	97	/**
102			* Holds the {@link MapLayer} to keep synchronized with the layer selection
103			* model.
104			*/
105			protected final MapLayer mapLayer;
106	alfonx	489	protected final StyledFeaturesInterface<?> styledLayer;
107	alfonx	509	protected final SelectableXMapPane mapPane;
108	alfonx	111	private final MapPaneToolBar toolBar;
109	alfonx	97
110			/**
111			* Creates a new synchronizer
112			*
113			* @param layerSelModel
114			* layer selection model to keep synchronized with the
115			* {@link MapLayer}
116			*
117			* @param mapLayer
118			* {@link MapLayer} to keep synchronized with.
119			*/
120			public FeatureMapLayerSelectionSynchronizer(
121			StyledFeatureLayerSelectionModel layerSelModel,
122	alfonx	489	StyledFeaturesInterface<?> styledLayer, MapLayer mapLayer,
123	alfonx	509	SelectableXMapPane mapPane, MapPaneToolBar toolBar) {
124	alfonx	97
125			super(layerSelModel);
126	alfonx	224	this.styledLayer = styledLayer;
127	alfonx	97
128			this.mapLayer = mapLayer;
129			this.mapPane = mapPane;
130	alfonx	111	this.toolBar = toolBar;
131	alfonx	97	}
132
133			/**
134			* Called by {@link StyledLayerSelectionModel} when a the selection on other
135			* selection components (map, chart, ...) has changed. When calling this
136			*
137			* method changes the {@link MapLayer} selection according to the
138			* {@link StyledLayerSelectionModel} selection.
139			*
140			* @param evt
141			* an event
142			*/
143			@Override
144			public void propertyChange(PropertyChangeEvent evt) {
145	alfonx	151
146			if (!isEnabled())
147			return;
148
149	alfonx	97	if (!(evt instanceof StyledLayerSelectionEvent))
150			return;
151			StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
152			// Only react on own layer and ignore events invoked by
153			// this component itself
154			if (selEvt.getEmitter() != layerSelModel \|\| selectionChangeCausedByMe)
155			return;
156			// Apply new selection on table (except this event is one of
157			// some more events)
158	alfonx	111	Vector<String> newSelection = layerSelModel.getSelection();
159	alfonx	97	if (newSelection == null)
160			return;
161
162			// Avoid event circles in valueChanged(..)
163			selectionChangeCausedByMe = true;
164
165			changeLayerStyle(newSelection);
166
167			// Danger of event circles in valueChanged(..) banned
168			selectionChangeCausedByMe = false;
169			}
170
171	alfonx	151	/**
172			* Changes the Style of the {@link MapLayer} to reflect changes of the
173			* selection.
174			*
175			* @param newSelection
176	alfonx	318	* A {@link Vector} of SimpleFeature-IDs that are selected.
177	alfonx	151	*/
178	alfonx	111	private void changeLayerStyle(final Vector<String> newSelection) {
179	alfonx	97	try {
180	alfonx	455
181	alfonx	412	Style originalStyle = mapLayer.getStyle();
182	alfonx	500
183	alfonx	97	if (newSelection.isEmpty()) {
184
185	alfonx	412	// Check if the Style contains a SELECTION FTS
186	alfonx	455
187			FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
188			.toArray(new FeatureTypeStyle[] {}).clone();
189
190	alfonx	412	for (FeatureTypeStyle fts : clone) {
191			if (fts.getName() != null
192			&& fts.getName().equals(SELECTION_STYLING)) {
193			originalStyle.featureTypeStyles().remove(fts);
194	alfonx	455
195	alfonx	419	replaceRenderer();
196	alfonx	455	// mapPane.refresh();
197	alfonx	106
198	alfonx	412	return;
199			}
200			}
201
202	alfonx	97	} else {
203	alfonx	500
204	alfonx	100	LOGGER.debug("SELECTION .. change style");
205	alfonx	106
206	alfonx	500	// Saving a repaint if the selection didn't change
207			if (!selectionChanged(newSelection, originalStyle)) {
208			return;
209			}
210
211	alfonx	123	// We take Style from the MapLayer that is displayed at the
212	alfonx	224	// moment. We do not use the styledLayer.getStyle, because in
213	alfonx	123	// the atlas, this always return the default style, but
214	alfonx	224	// additional styles might be selected.
215	alfonx	123	// Taking the style from the mapLayer indicated, that we have to
216	alfonx	125	// remove any selection rules first.
217	alfonx	101
218	alfonx	412	FeatureTypeStyle selectionFTStyle = StylingUtil
219	alfonx	224	.createSelectionStyle(styledLayer.getGeoObject());
220	alfonx	106
221	alfonx	412	selectionFTStyle.setName(SELECTION_STYLING);
222	alfonx	123
223	alfonx	158	/**
224			*
225			* Add a Filter to the selectionMapStyle, so that it is only
226			* used on objects that are selected. <br/>
227	alfonx	489	* To optimize rendering speed, the filter checks whether more
228			* than half of the features are selected. If so, the filter is
229			* inverted to be shorter.
230	alfonx	158	*
231			*/
232	alfonx	489	final FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollectionFiltered = styledLayer
233			.getFeatureCollectionFiltered();
234			if (newSelection.size() > featureCollectionFiltered.size() / 2) {
235			FeatureIterator<SimpleFeature> iterator = featureCollectionFiltered
236			.features();
237			Set<FeatureId> antiFids = new HashSet<FeatureId>();
238			try {
239			while (iterator.hasNext()) {
240			SimpleFeature next = iterator.next();
241			if (!newSelection.contains(next.getID()))
242			antiFids.add(FilterUtil.FILTER_FAC2
243			.featureId(next.getID()));
244			}
245
246			selectionFTStyle.rules().get(0).setFilter(
247			FilterUtil.FILTER_FAC2
248			.not(FilterUtil.FILTER_FAC2
249			.id(antiFids)));
250
251			} finally {
252			featureCollectionFiltered.close(iterator);
253			}
254			} else {
255			Set<FeatureId> fids = new HashSet<FeatureId>();
256			for (String fid : newSelection) {
257			fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
258			}
259
260			selectionFTStyle.rules().get(0).setFilter(
261			FilterUtil.FILTER_FAC2.id(fids));
262	alfonx	158	}
263	alfonx	106
264	alfonx	412	// Maybe there has already been another selection
265			// FeatureTypeStyle... Let's replace it...
266			boolean foundAndReplaced = false;
267			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
268			if (fts.getName() != null
269			&& fts.getName().equals(SELECTION_STYLING)) {
270			foundAndReplaced = true;
271			fts.rules().clear();
272			fts.rules().addAll(selectionFTStyle.rules());
273			break;
274			}
275	alfonx	123	}
276	alfonx	412	if (!foundAndReplaced) {
277			originalStyle.featureTypeStyles().add(selectionFTStyle);
278			}
279	alfonx	151
280	alfonx	412	// Refresh the map
281	alfonx	455	// mapPane.refresh();
282
283	alfonx	419	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
284			dsv.visit(originalStyle);
285	alfonx	455	Style newStyle = (Style) dsv.getCopy();
286	mojays	493
287	alfonx	500	// SK-Debug
288			try {
289			//
290			StylingUtil.saveStyleToSLD(newStyle, new File(
291			"/home/stefan/Desktop/selection.sld"));
292			} catch (Exception e) {
293			}
294	mojays	493
295			// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
296	alfonx	489	// dsv.visit(originalStyle);
297			// Style newStyle = originalStyle;
298
299	alfonx	455	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
300			// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
301	alfonx	419	mapLayer.setStyle(newStyle);
302	alfonx	455
303	alfonx	419	replaceRenderer();
304	alfonx	97	}
305
306			} catch (Exception e) {
307			LOGGER.error("Error while trying to create a selection style", e);
308			}
309			}
310
311	alfonx	500	/**
312			* Analyses whether the selection has changed in comparison to the selection
313			* stored in the mapLayer.Style
314			*
315			* @param newSelection
316			* @param originalStyle
317			* @return
318			*/
319			private boolean selectionChanged(Vector<String> newSelection,
320			Style originalStyle) {
321
322			boolean SELECTION_STYLING_foundInMapStyle = false;
323
324			/**
325			* testing, whether the selection really changed. If not, we can save
326			* one paint!
327			*/
328			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
329
330			if (fts.getName() != null
331			&& fts.getName().equals(SELECTION_STYLING)) {
332
333			SELECTION_STYLING_foundInMapStyle = true;
334
335			Filter filter = fts.rules().get(0).getFilter();
336			if (filter instanceof Not) {
337			FidFilterImpl antiOrigFidsFilter = (FidFilterImpl) ((Not) filter)
338			.getFilter();
339
340			// Check one way
341			final Set<String> antiFids = antiOrigFidsFilter
342			.getFidsSet();
343
344			if (antiFids.isEmpty() && !newSelection.isEmpty())
345			return true;
346
347			for (String fid : antiFids) {
348			if (newSelection.contains(fid)) {
349			return true;
350			}
351			}
352
353			// Check the other way
354			for (String fid : newSelection) {
355			if (antiFids.contains(fid)) {
356			return true;
357			}
358			}
359
360			} else {
361			FidFilterImpl origFidsFilter = (FidFilterImpl) filter;
362
363			// Check one way
364			final Set<String> fids = origFidsFilter.getFidsSet();
365
366			if (fids.isEmpty() && newSelection.isEmpty())
367			return false;
368			if (fids.size() != newSelection.size())
369			return true;
370
371			for (String fid : fids) {
372			if (!newSelection.contains(fid)) {
373			return true;
374			}
375			}
376
377			// Check the other way
378			for (String fid : newSelection) {
379			if (!fids.contains(fid)) {
380			return true;
381			}
382			}
383
384			}
385
386			break;
387			}
388			}
389
390			if (!SELECTION_STYLING_foundInMapStyle && !newSelection.isEmpty())
391			return true;
392
393			return false;
394			}
395
396	alfonx	509	/**
397			* Replaces the local renderer
398			*/
399	alfonx	419	private void replaceRenderer() {
400	alfonx	509	// //
401			// // // Has to be done before we apply the new Renderer
402			// // mapLayer.setStyle(style);
403			//
404			// GTRenderer oldRenderer = mapPane.getLocalRenderer();
405			//
406			// /**
407			// * Explicitly putting a new instance of LabelCacheDefault into the
408			// * renderer instance, so JMapPane doesn't reuse the old one. This is
409			// * very useful when changing the TextSymbolizer with AtlasStyler<br/>
410			// * SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
411			// * reuse the old Renderer - better to create a new one!
412			// */
413			// final GTRenderer newRenderer = GTUtil.createGTRenderer();
414			//
415			// final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
416			// rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
417			// new LabelCacheImpl());
418			//
419			// newRenderer.setRendererHints(rendererHints);
420			// mapPane.setLocalRenderer(newRenderer);
421			//
422			// if (oldRenderer != null) {
423			//
424			// RenderingHints java2DHints = oldRenderer.getJava2DHints();
425			// if (java2DHints != null) {
426			// newRenderer.setJava2DHints(java2DHints);
427			// }
428			//
429			// oldRenderer.setContext(null);
430			// oldRenderer = null;
431			// }
432	alfonx	419
433			mapPane.refresh();
434
435			}
436
437	alfonx	151	/**
438			* Used to synchronize {@link FeatureSelectedEvent}s with the
439			* {@link StyledFeatureLayerSelectionModel}
440			*/
441	alfonx	97	@Override
442	alfonx	509	public void performMapPaneEvent(MapPaneEvent e) {
443	alfonx	106
444	alfonx	151	// Ignore event if it is caused by us or the synchronizer is disabled.
445			if (!isEnabled() \|\| selectionChangeCausedByMe)
446			return;
447
448			if (!(e instanceof FeatureSelectedEvent)) {
449			// LOGGER.debug("Ignoring event " + e);
450			return;
451			}
452
453	alfonx	111	/**
454	alfonx	151	* Only listen to FeatureSelectedEvents if an appropriate tool is
455	alfonx	111	* selected.
456			*/
457			final int selectedTool = toolBar.getSelectedTool();
458			if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
459			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
460			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
461			return;
462			}
463
464	mojays	109	// only listen to events directly coming from JMapPane
465			// selection (ignore selections from FilterDialog)
466	alfonx	111	if (e.getSourceObject() != this.mapPane)
467			return;
468
469	alfonx	151	/**
470	alfonx	158	* Checking, that the FeatureSelectedEvent actually contains features
471			* from this layer
472	alfonx	151	*/
473	alfonx	492	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
474	alfonx	151	final String sourceID = fse.getSourceLayer().getTitle();
475			final String syncForID = mapLayer.getTitle();
476			if (sourceID != null && syncForID != null
477	alfonx	158	&& !sourceID.equals(syncForID)) {
478			LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
479	alfonx	97	return;
480	alfonx	151	}
481	alfonx	97
482	alfonx	489	// LOGGER.debug("do event " + fse);
483	alfonx	111
484	alfonx	97	// Avoid event circles in propertyChange(..)
485			selectionChangeCausedByMe = true;
486
487	alfonx	455	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
488			.getSelectionResult();
489			Iterator<SimpleFeature> fi = selectionResult.iterator();
490			try {
491	alfonx	97
492	alfonx	455	// reset the selection of the DpLayerSelectionModel
493			// layerSelModel.setValueIsAdjusting(true);
494	alfonx	97
495	alfonx	455	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
496			layerSelModel.setValueIsAdjusting(true);
497	alfonx	409
498	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
499			SimpleFeature f = fi.next();
500			layerSelModel.addSelection(f.getID());
501			}
502			layerSelModel.setValueIsAdjusting(false);
503			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
504			layerSelModel.setValueIsAdjusting(true);
505			layerSelModel.clearSelection();
506	alfonx	97
507	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
508			SimpleFeature f = fi.next();
509			layerSelModel.addSelection(f.getID());
510			}
511	alfonx	111
512	alfonx	455	// LOGGER.debug("Setting selection to " + fi.());
513	alfonx	409
514	alfonx	455	layerSelModel.setValueIsAdjusting(false);
515			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
516			layerSelModel.setValueIsAdjusting(true);
517			for (int fIdx = 0; fi.hasNext(); fIdx++) {
518			SimpleFeature f = fi.next();
519			layerSelModel.removeSelection(f.getID());
520			}
521			layerSelModel.setValueIsAdjusting(false);
522	alfonx	111	}
523	alfonx	455
524			} finally {
525			selectionResult.close(fi);
526	alfonx	151	}
527	alfonx	111
528			// Show selected features in the map, which is not automatically done by
529			// the origin: FeatureSelectedEvent
530	alfonx	97	changeLayerStyle(layerSelModel.getSelection());
531	alfonx	106
532	alfonx	97	// Danger of event circles in propertyChange(..) banned
533			selectionChangeCausedByMe = false;
534			}
535	alfonx	151
536	alfonx	97	}
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