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.filter.FidFilterImpl;
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.Filter;
import org.opengis.filter.Not;
import org.opengis.filter.identity.FeatureId;

import schmitzm.geotools.FilterUtil;
import schmitzm.geotools.GTUtil;
import schmitzm.geotools.gui.SelectableXMapPane;
import schmitzm.geotools.map.event.FeatureSelectedEvent;
import schmitzm.geotools.map.event.JMapPaneListener;
import schmitzm.geotools.map.event.MapPaneEvent;
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 {

        /**
         * This constant is set as the {@link FeatureTypeStyle#getName()} attribute
         * in the {@link FeatureTypeStyle}s that only exist to present the selected
         * features
         **/
        public static final String SELECTION_STYLING_FTS_NAME = "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_FTS_NAME)) {
                                                originalStyle.featureTypeStyles().remove(fts);

                                                mapLayer.setStyle(originalStyle);
                                                // 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_FTS_NAME);

                                /**
                                 * 
                                 * 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_FTS_NAME)) {
                                                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);
                }
        }

        /**
         * Analyzes whether the selection has changed in comparison to the selection
         * stored in the mapLayer.Style
         * 
         * @param newSelection a List<String> of all newly selected FIDs
         * @param originalStyle the original {@link Style} that has an earlier selection coded into the {@link Style}
         * @return <code>true</code> if changed.
         */
        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 rendering!
                 */
                for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {

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

                                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;
                                                }
                                        }

                                        if (antiFids.size() + newSelection.size() != styledLayer
                                                        .getFeatureCollectionFiltered().size())
                                                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() {
        }

        /**
         * 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	alfonx	559	import java.awt.RenderingHints;
46	alfonx	97	import java.beans.PropertyChangeEvent;
47			import java.beans.PropertyChangeListener;
48	alfonx	489	import java.io.File;
49	alfonx	559	import java.util.HashMap;
50	alfonx	158	import java.util.HashSet;
51	alfonx	409	import java.util.Iterator;
52	alfonx	158	import java.util.Set;
53	alfonx	97	import java.util.Vector;
54
55			import javax.swing.JTable;
56			import javax.swing.ListSelectionModel;
57			import javax.swing.event.ListSelectionListener;
58
59	alfonx	455	import org.geotools.feature.FeatureCollection;
60	alfonx	489	import org.geotools.feature.FeatureIterator;
61	alfonx	500	import org.geotools.filter.FidFilterImpl;
62	alfonx	97	import org.geotools.map.MapLayer;
63	alfonx	559	import org.geotools.renderer.GTRenderer;
64			import org.geotools.renderer.label.LabelCacheImpl;
65			import org.geotools.renderer.lite.StreamingRenderer;
66	alfonx	123	import org.geotools.styling.FeatureTypeStyle;
67	alfonx	97	import org.geotools.styling.Style;
68	alfonx	419	import org.geotools.styling.visitor.DuplicatingStyleVisitor;
69	mojays	325	import org.opengis.feature.simple.SimpleFeature;
70	alfonx	455	import org.opengis.feature.simple.SimpleFeatureType;
71	alfonx	500	import org.opengis.filter.Filter;
72			import org.opengis.filter.Not;
73	alfonx	158	import org.opengis.filter.identity.FeatureId;
74	alfonx	97
75	alfonx	158	import schmitzm.geotools.FilterUtil;
76	alfonx	559	import schmitzm.geotools.GTUtil;
77	alfonx	509	import schmitzm.geotools.gui.SelectableXMapPane;
78	alfonx	97	import schmitzm.geotools.map.event.FeatureSelectedEvent;
79	alfonx	559	import schmitzm.geotools.map.event.JMapPaneListener;
80	alfonx	509	import schmitzm.geotools.map.event.MapPaneEvent;
81	alfonx	97	import schmitzm.geotools.styling.StylingUtil;
82	alfonx	111	import skrueger.geotools.MapPaneToolBar;
83	alfonx	489	import skrueger.geotools.StyledFeaturesInterface;
84	alfonx	97
85			/**
86			* This class keeps the selection of a (feature) {@link JTable} synchronized
87			* with the {@link StyledLayerSelectionModel} of a layer. This is done by
88			* implementing:
89			* <ul>
90			* <li>a {@link PropertyChangeListener} which listens to the
91			* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
92			* selection</li>
93			* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
94			* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
95			* </ul>
96			* After creating, the instance of this synchronizer must be added as listener
97			* to both, the {@link StyledLayerSelectionModel} and the table's
98			* {@link ListSelectionModel}.
99			*
100			* @author <a href="mailto:[email protected]">Martin Schmitz</a>
101			* (University of Bonn/Germany)
102			*/
103			public class FeatureMapLayerSelectionSynchronizer extends
104	alfonx	106	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
105			implements JMapPaneListener {
106	alfonx	516
107	alfonx	97	/**
108	alfonx	516	* This constant is set as the {@link FeatureTypeStyle#getName()} attribute
109			* in the {@link FeatureTypeStyle}s that only exist to present the selected
110			* features
111			**/
112			public static final String SELECTION_STYLING_FTS_NAME = "SELECTION";
113
114			/**
115	alfonx	97	* Holds the {@link MapLayer} to keep synchronized with the layer selection
116			* model.
117			*/
118			protected final MapLayer mapLayer;
119	alfonx	489	protected final StyledFeaturesInterface<?> styledLayer;
120	alfonx	509	protected final SelectableXMapPane mapPane;
121	alfonx	111	private final MapPaneToolBar toolBar;
122	alfonx	97
123			/**
124			* Creates a new synchronizer
125			*
126			* @param layerSelModel
127			* layer selection model to keep synchronized with the
128			* {@link MapLayer}
129			*
130			* @param mapLayer
131			* {@link MapLayer} to keep synchronized with.
132			*/
133			public FeatureMapLayerSelectionSynchronizer(
134			StyledFeatureLayerSelectionModel layerSelModel,
135	alfonx	489	StyledFeaturesInterface<?> styledLayer, MapLayer mapLayer,
136	alfonx	509	SelectableXMapPane mapPane, MapPaneToolBar toolBar) {
137	alfonx	97
138			super(layerSelModel);
139	alfonx	224	this.styledLayer = styledLayer;
140	alfonx	97
141			this.mapLayer = mapLayer;
142			this.mapPane = mapPane;
143	alfonx	111	this.toolBar = toolBar;
144	alfonx	97	}
145
146			/**
147			* Called by {@link StyledLayerSelectionModel} when a the selection on other
148			* selection components (map, chart, ...) has changed. When calling this
149			*
150			* method changes the {@link MapLayer} selection according to the
151			* {@link StyledLayerSelectionModel} selection.
152			*
153			* @param evt
154			* an event
155			*/
156			@Override
157			public void propertyChange(PropertyChangeEvent evt) {
158	alfonx	151
159			if (!isEnabled())
160			return;
161
162	alfonx	97	if (!(evt instanceof StyledLayerSelectionEvent))
163			return;
164			StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
165			// Only react on own layer and ignore events invoked by
166			// this component itself
167			if (selEvt.getEmitter() != layerSelModel \|\| selectionChangeCausedByMe)
168			return;
169			// Apply new selection on table (except this event is one of
170			// some more events)
171	alfonx	111	Vector<String> newSelection = layerSelModel.getSelection();
172	alfonx	97	if (newSelection == null)
173			return;
174
175			// Avoid event circles in valueChanged(..)
176			selectionChangeCausedByMe = true;
177
178			changeLayerStyle(newSelection);
179
180			// Danger of event circles in valueChanged(..) banned
181			selectionChangeCausedByMe = false;
182			}
183
184	alfonx	151	/**
185			* Changes the Style of the {@link MapLayer} to reflect changes of the
186			* selection.
187			*
188			* @param newSelection
189	alfonx	318	* A {@link Vector} of SimpleFeature-IDs that are selected.
190	alfonx	151	*/
191	alfonx	111	private void changeLayerStyle(final Vector<String> newSelection) {
192	alfonx	97	try {
193	alfonx	455
194	alfonx	412	Style originalStyle = mapLayer.getStyle();
195	alfonx	500
196	alfonx	97	if (newSelection.isEmpty()) {
197
198	alfonx	412	// Check if the Style contains a SELECTION FTS
199	alfonx	455
200			FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
201			.toArray(new FeatureTypeStyle[] {}).clone();
202
203	alfonx	412	for (FeatureTypeStyle fts : clone) {
204			if (fts.getName() != null
205	alfonx	516	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
206	alfonx	412	originalStyle.featureTypeStyles().remove(fts);
207	alfonx	455
208	alfonx	559	mapLayer.setStyle(originalStyle);
209			// replaceRenderer();
210			// // mapPane.refresh();
211	alfonx	106
212	alfonx	412	return;
213			}
214			}
215
216	alfonx	97	} else {
217	alfonx	500
218	alfonx	100	LOGGER.debug("SELECTION .. change style");
219	alfonx	106
220	alfonx	500	// Saving a repaint if the selection didn't change
221			if (!selectionChanged(newSelection, originalStyle)) {
222			return;
223			}
224
225	alfonx	123	// We take Style from the MapLayer that is displayed at the
226	alfonx	224	// moment. We do not use the styledLayer.getStyle, because in
227	alfonx	123	// the atlas, this always return the default style, but
228	alfonx	224	// additional styles might be selected.
229	alfonx	123	// Taking the style from the mapLayer indicated, that we have to
230	alfonx	125	// remove any selection rules first.
231	alfonx	101
232	alfonx	412	FeatureTypeStyle selectionFTStyle = StylingUtil
233	alfonx	224	.createSelectionStyle(styledLayer.getGeoObject());
234	alfonx	106
235	alfonx	516	selectionFTStyle.setName(SELECTION_STYLING_FTS_NAME);
236	alfonx	123
237	alfonx	158	/**
238			*
239			* Add a Filter to the selectionMapStyle, so that it is only
240			* used on objects that are selected. <br/>
241	alfonx	489	* To optimize rendering speed, the filter checks whether more
242			* than half of the features are selected. If so, the filter is
243			* inverted to be shorter.
244	alfonx	158	*
245			*/
246	alfonx	489	final FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollectionFiltered = styledLayer
247			.getFeatureCollectionFiltered();
248			if (newSelection.size() > featureCollectionFiltered.size() / 2) {
249			FeatureIterator<SimpleFeature> iterator = featureCollectionFiltered
250			.features();
251			Set<FeatureId> antiFids = new HashSet<FeatureId>();
252			try {
253			while (iterator.hasNext()) {
254			SimpleFeature next = iterator.next();
255			if (!newSelection.contains(next.getID()))
256			antiFids.add(FilterUtil.FILTER_FAC2
257			.featureId(next.getID()));
258			}
259
260			selectionFTStyle.rules().get(0).setFilter(
261			FilterUtil.FILTER_FAC2
262			.not(FilterUtil.FILTER_FAC2
263			.id(antiFids)));
264
265			} finally {
266			featureCollectionFiltered.close(iterator);
267			}
268			} else {
269			Set<FeatureId> fids = new HashSet<FeatureId>();
270			for (String fid : newSelection) {
271			fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
272			}
273
274			selectionFTStyle.rules().get(0).setFilter(
275			FilterUtil.FILTER_FAC2.id(fids));
276	alfonx	158	}
277	alfonx	106
278	alfonx	412	// Maybe there has already been another selection
279			// FeatureTypeStyle... Let's replace it...
280			boolean foundAndReplaced = false;
281			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
282			if (fts.getName() != null
283	alfonx	516	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
284	alfonx	412	foundAndReplaced = true;
285			fts.rules().clear();
286			fts.rules().addAll(selectionFTStyle.rules());
287			break;
288			}
289	alfonx	123	}
290	alfonx	412	if (!foundAndReplaced) {
291			originalStyle.featureTypeStyles().add(selectionFTStyle);
292			}
293	alfonx	151
294	alfonx	412	// Refresh the map
295	alfonx	455	// mapPane.refresh();
296
297	alfonx	419	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
298			dsv.visit(originalStyle);
299	alfonx	455	Style newStyle = (Style) dsv.getCopy();
300	mojays	493
301	alfonx	500	// SK-Debug
302			try {
303			//
304			StylingUtil.saveStyleToSLD(newStyle, new File(
305			"/home/stefan/Desktop/selection.sld"));
306			} catch (Exception e) {
307			}
308	mojays	493
309			// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
310	alfonx	489	// dsv.visit(originalStyle);
311			// Style newStyle = originalStyle;
312
313	alfonx	455	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
314			// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
315	alfonx	419	mapLayer.setStyle(newStyle);
316	alfonx	455
317	alfonx	419	replaceRenderer();
318	alfonx	97	}
319
320			} catch (Exception e) {
321			LOGGER.error("Error while trying to create a selection style", e);
322			}
323			}
324
325	alfonx	500	/**
326	alfonx	560	* Analyzes whether the selection has changed in comparison to the selection
327	alfonx	500	* stored in the mapLayer.Style
328			*
329	alfonx	560	* @param newSelection a List<String> of all newly selected FIDs
330			* @param originalStyle the original {@link Style} that has an earlier selection coded into the {@link Style}
331			* @return <code>true</code> if changed.
332	alfonx	500	*/
333			private boolean selectionChanged(Vector<String> newSelection,
334			Style originalStyle) {
335
336			boolean SELECTION_STYLING_foundInMapStyle = false;
337
338			/**
339			* testing, whether the selection really changed. If not, we can save
340	alfonx	559	* one rendering!
341	alfonx	500	*/
342			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
343
344			if (fts.getName() != null
345	alfonx	516	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
346	alfonx	500
347			SELECTION_STYLING_foundInMapStyle = true;
348
349			Filter filter = fts.rules().get(0).getFilter();
350			if (filter instanceof Not) {
351			FidFilterImpl antiOrigFidsFilter = (FidFilterImpl) ((Not) filter)
352			.getFilter();
353
354			// Check one way
355			final Set<String> antiFids = antiOrigFidsFilter
356			.getFidsSet();
357
358			if (antiFids.isEmpty() && !newSelection.isEmpty())
359			return true;
360
361			for (String fid : antiFids) {
362			if (newSelection.contains(fid)) {
363			return true;
364			}
365			}
366
367			// Check the other way
368			for (String fid : newSelection) {
369			if (antiFids.contains(fid)) {
370			return true;
371			}
372			}
373
374	alfonx	559	if (antiFids.size() + newSelection.size() != styledLayer
375			.getFeatureCollectionFiltered().size())
376			return true;
377
378	alfonx	500	} else {
379			FidFilterImpl origFidsFilter = (FidFilterImpl) filter;
380
381			// Check one way
382			final Set<String> fids = origFidsFilter.getFidsSet();
383
384			if (fids.isEmpty() && newSelection.isEmpty())
385			return false;
386			if (fids.size() != newSelection.size())
387			return true;
388
389			for (String fid : fids) {
390			if (!newSelection.contains(fid)) {
391			return true;
392			}
393			}
394
395			// Check the other way
396			for (String fid : newSelection) {
397			if (!fids.contains(fid)) {
398			return true;
399			}
400			}
401
402			}
403
404			break;
405			}
406			}
407
408			if (!SELECTION_STYLING_foundInMapStyle && !newSelection.isEmpty())
409			return true;
410
411			return false;
412			}
413
414	alfonx	509	/**
415	alfonx	516	* Replaces the local renderer
416	alfonx	509	*/
417	alfonx	419	private void replaceRenderer() {
418			}
419
420	alfonx	151	/**
421			* Used to synchronize {@link FeatureSelectedEvent}s with the
422			* {@link StyledFeatureLayerSelectionModel}
423			*/
424	alfonx	97	@Override
425	alfonx	509	public void performMapPaneEvent(MapPaneEvent e) {
426	alfonx	106
427	alfonx	151	// Ignore event if it is caused by us or the synchronizer is disabled.
428			if (!isEnabled() \|\| selectionChangeCausedByMe)
429			return;
430
431			if (!(e instanceof FeatureSelectedEvent)) {
432			// LOGGER.debug("Ignoring event " + e);
433			return;
434			}
435
436	alfonx	111	/**
437	alfonx	151	* Only listen to FeatureSelectedEvents if an appropriate tool is
438	alfonx	111	* selected.
439			*/
440			final int selectedTool = toolBar.getSelectedTool();
441			if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
442			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
443			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
444			return;
445			}
446
447	mojays	109	// only listen to events directly coming from JMapPane
448			// selection (ignore selections from FilterDialog)
449	alfonx	111	if (e.getSourceObject() != this.mapPane)
450			return;
451
452	alfonx	151	/**
453	alfonx	158	* Checking, that the FeatureSelectedEvent actually contains features
454			* from this layer
455	alfonx	151	*/
456	alfonx	492	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
457	alfonx	151	final String sourceID = fse.getSourceLayer().getTitle();
458			final String syncForID = mapLayer.getTitle();
459			if (sourceID != null && syncForID != null
460	alfonx	158	&& !sourceID.equals(syncForID)) {
461			LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
462	alfonx	97	return;
463	alfonx	151	}
464	alfonx	97
465	alfonx	489	// LOGGER.debug("do event " + fse);
466	alfonx	111
467	alfonx	97	// Avoid event circles in propertyChange(..)
468			selectionChangeCausedByMe = true;
469
470	alfonx	455	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
471			.getSelectionResult();
472			Iterator<SimpleFeature> fi = selectionResult.iterator();
473			try {
474	alfonx	97
475	alfonx	455	// reset the selection of the DpLayerSelectionModel
476			// layerSelModel.setValueIsAdjusting(true);
477	alfonx	97
478	alfonx	455	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
479			layerSelModel.setValueIsAdjusting(true);
480	alfonx	409
481	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
482			SimpleFeature f = fi.next();
483			layerSelModel.addSelection(f.getID());
484			}
485			layerSelModel.setValueIsAdjusting(false);
486			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
487			layerSelModel.setValueIsAdjusting(true);
488			layerSelModel.clearSelection();
489	alfonx	97
490	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
491			SimpleFeature f = fi.next();
492			layerSelModel.addSelection(f.getID());
493			}
494	alfonx	111
495	alfonx	455	// LOGGER.debug("Setting selection to " + fi.());
496	alfonx	409
497	alfonx	455	layerSelModel.setValueIsAdjusting(false);
498			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
499			layerSelModel.setValueIsAdjusting(true);
500			for (int fIdx = 0; fi.hasNext(); fIdx++) {
501			SimpleFeature f = fi.next();
502			layerSelModel.removeSelection(f.getID());
503			}
504			layerSelModel.setValueIsAdjusting(false);
505	alfonx	111	}
506	alfonx	455
507			} finally {
508			selectionResult.close(fi);
509	alfonx	151	}
510	alfonx	111
511			// Show selected features in the map, which is not automatically done by
512			// the origin: FeatureSelectedEvent
513	alfonx	97	changeLayerStyle(layerSelModel.getSelection());
514	alfonx	106
515	alfonx	97	// Danger of event circles in propertyChange(..) banned
516			selectionChangeCausedByMe = false;
517			}
518	alfonx	151
519	alfonx	97	}
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