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) {
                                                if (fid != null)
                                                        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	alfonx	671	if (fid != null)
266			fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
267	alfonx	489	}
268
269			selectionFTStyle.rules().get(0).setFilter(
270			FilterUtil.FILTER_FAC2.id(fids));
271	alfonx	158	}
272	alfonx	106
273	alfonx	412	// Maybe there has already been another selection
274			// FeatureTypeStyle... Let's replace it...
275			boolean foundAndReplaced = false;
276			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
277			if (fts.getName() != null
278	alfonx	516	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
279	alfonx	412	foundAndReplaced = true;
280			fts.rules().clear();
281			fts.rules().addAll(selectionFTStyle.rules());
282			break;
283			}
284	alfonx	123	}
285	alfonx	412	if (!foundAndReplaced) {
286			originalStyle.featureTypeStyles().add(selectionFTStyle);
287			}
288	alfonx	151
289	alfonx	412	// Refresh the map
290	alfonx	455	// mapPane.refresh();
291
292	alfonx	419	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
293			dsv.visit(originalStyle);
294	alfonx	455	Style newStyle = (Style) dsv.getCopy();
295	mojays	493
296	alfonx	500	// SK-Debug
297			try {
298			//
299			StylingUtil.saveStyleToSLD(newStyle, new File(
300			"/home/stefan/Desktop/selection.sld"));
301			} catch (Exception e) {
302			}
303	mojays	493
304			// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
305	alfonx	489	// dsv.visit(originalStyle);
306			// Style newStyle = originalStyle;
307
308	alfonx	455	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
309			// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
310	alfonx	419	mapLayer.setStyle(newStyle);
311	alfonx	455
312	alfonx	419	replaceRenderer();
313	alfonx	97	}
314
315			} catch (Exception e) {
316			LOGGER.error("Error while trying to create a selection style", e);
317			}
318			}
319
320	alfonx	500	/**
321	alfonx	560	* Analyzes whether the selection has changed in comparison to the selection
322	alfonx	500	* stored in the mapLayer.Style
323			*
324	alfonx	560	* @param newSelection a List<String> of all newly selected FIDs
325			* @param originalStyle the original {@link Style} that has an earlier selection coded into the {@link Style}
326			* @return <code>true</code> if changed.
327	alfonx	500	*/
328			private boolean selectionChanged(Vector<String> newSelection,
329			Style originalStyle) {
330
331			boolean SELECTION_STYLING_foundInMapStyle = false;
332
333			/**
334			* testing, whether the selection really changed. If not, we can save
335	alfonx	559	* one rendering!
336	alfonx	500	*/
337			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
338
339			if (fts.getName() != null
340	alfonx	516	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
341	alfonx	500
342			SELECTION_STYLING_foundInMapStyle = true;
343
344			Filter filter = fts.rules().get(0).getFilter();
345			if (filter instanceof Not) {
346			FidFilterImpl antiOrigFidsFilter = (FidFilterImpl) ((Not) filter)
347			.getFilter();
348
349			// Check one way
350			final Set<String> antiFids = antiOrigFidsFilter
351			.getFidsSet();
352
353			if (antiFids.isEmpty() && !newSelection.isEmpty())
354			return true;
355
356			for (String fid : antiFids) {
357			if (newSelection.contains(fid)) {
358			return true;
359			}
360			}
361
362			// Check the other way
363			for (String fid : newSelection) {
364			if (antiFids.contains(fid)) {
365			return true;
366			}
367			}
368
369	alfonx	559	if (antiFids.size() + newSelection.size() != styledLayer
370			.getFeatureCollectionFiltered().size())
371			return true;
372
373	alfonx	500	} else {
374			FidFilterImpl origFidsFilter = (FidFilterImpl) filter;
375
376			// Check one way
377			final Set<String> fids = origFidsFilter.getFidsSet();
378
379			if (fids.isEmpty() && newSelection.isEmpty())
380			return false;
381			if (fids.size() != newSelection.size())
382			return true;
383
384			for (String fid : fids) {
385			if (!newSelection.contains(fid)) {
386			return true;
387			}
388			}
389
390			// Check the other way
391			for (String fid : newSelection) {
392			if (!fids.contains(fid)) {
393			return true;
394			}
395			}
396
397			}
398
399			break;
400			}
401			}
402
403			if (!SELECTION_STYLING_foundInMapStyle && !newSelection.isEmpty())
404			return true;
405
406			return false;
407			}
408
409	alfonx	509	/**
410	alfonx	516	* Replaces the local renderer
411	alfonx	509	*/
412	alfonx	419	private void replaceRenderer() {
413			}
414
415	alfonx	151	/**
416			* Used to synchronize {@link FeatureSelectedEvent}s with the
417			* {@link StyledFeatureLayerSelectionModel}
418			*/
419	alfonx	97	@Override
420	alfonx	509	public void performMapPaneEvent(MapPaneEvent e) {
421	alfonx	106
422	alfonx	151	// Ignore event if it is caused by us or the synchronizer is disabled.
423			if (!isEnabled() \|\| selectionChangeCausedByMe)
424			return;
425
426			if (!(e instanceof FeatureSelectedEvent)) {
427			// LOGGER.debug("Ignoring event " + e);
428			return;
429			}
430
431	alfonx	111	/**
432	alfonx	151	* Only listen to FeatureSelectedEvents if an appropriate tool is
433	alfonx	111	* selected.
434			*/
435			final int selectedTool = toolBar.getSelectedTool();
436			if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
437			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
438			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
439			return;
440			}
441
442	mojays	109	// only listen to events directly coming from JMapPane
443			// selection (ignore selections from FilterDialog)
444	alfonx	111	if (e.getSourceObject() != this.mapPane)
445			return;
446
447	alfonx	151	/**
448	alfonx	158	* Checking, that the FeatureSelectedEvent actually contains features
449			* from this layer
450	alfonx	151	*/
451	alfonx	492	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
452	alfonx	151	final String sourceID = fse.getSourceLayer().getTitle();
453			final String syncForID = mapLayer.getTitle();
454			if (sourceID != null && syncForID != null
455	alfonx	158	&& !sourceID.equals(syncForID)) {
456			LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
457	alfonx	97	return;
458	alfonx	151	}
459	alfonx	97
460	alfonx	489	// LOGGER.debug("do event " + fse);
461	alfonx	111
462	alfonx	97	// Avoid event circles in propertyChange(..)
463			selectionChangeCausedByMe = true;
464
465	alfonx	455	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
466			.getSelectionResult();
467			Iterator<SimpleFeature> fi = selectionResult.iterator();
468			try {
469	alfonx	97
470	alfonx	455	// reset the selection of the DpLayerSelectionModel
471			// layerSelModel.setValueIsAdjusting(true);
472	alfonx	97
473	alfonx	455	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
474			layerSelModel.setValueIsAdjusting(true);
475	alfonx	409
476	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
477			SimpleFeature f = fi.next();
478			layerSelModel.addSelection(f.getID());
479			}
480			layerSelModel.setValueIsAdjusting(false);
481			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
482			layerSelModel.setValueIsAdjusting(true);
483			layerSelModel.clearSelection();
484	alfonx	97
485	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
486			SimpleFeature f = fi.next();
487			layerSelModel.addSelection(f.getID());
488			}
489	alfonx	111
490	alfonx	455	// LOGGER.debug("Setting selection to " + fi.());
491	alfonx	409
492	alfonx	455	layerSelModel.setValueIsAdjusting(false);
493			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
494			layerSelModel.setValueIsAdjusting(true);
495			for (int fIdx = 0; fi.hasNext(); fIdx++) {
496			SimpleFeature f = fi.next();
497			layerSelModel.removeSelection(f.getID());
498			}
499			layerSelModel.setValueIsAdjusting(false);
500	alfonx	111	}
501	alfonx	455
502			} finally {
503			selectionResult.close(fi);
504	alfonx	151	}
505	alfonx	111
506			// Show selected features in the map, which is not automatically done by
507			// the origin: FeatureSelectedEvent
508	alfonx	97	changeLayerStyle(layerSelModel.getSelection());
509	alfonx	106
510	alfonx	97	// Danger of event circles in propertyChange(..) banned
511			selectionChangeCausedByMe = false;
512			}
513	alfonx	151
514	alfonx	97	}
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