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