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. Tzeggai - additional utility classes
 ******************************************************************************/
/** 
 Copyright 2008 Stefan Alfons Tzeggai 

 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.gui.XMapPaneEvent;
import schmitzm.geotools.map.event.FeatureSelectedEvent;
import schmitzm.geotools.map.event.JMapPaneListener;
import schmitzm.geotools.styling.StylingUtil;
import schmitzm.geotools.styling.StylingUtil.SelectionStylesTypes;
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 indicates, that we have to
                                // remove any selection rules first.

                                FeatureTypeStyle selectionFTStyle = StylingUtil
                                                .createSelectionFTStyle(styledLayer.getGeoObject(),
                                                                SelectionStylesTypes.LeftTop2RightBottom_lines);

                                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(XMapPaneEvent 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	alfonx	862	* Stefan A. Tzeggai - additional utility classes
29	alfonx	244	******************************************************************************/
30	alfonx	97	/**
31	alfonx	862	Copyright 2008 Stefan Alfons Tzeggai
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	740	import schmitzm.geotools.gui.XMapPaneEvent;
73	alfonx	97	import schmitzm.geotools.map.event.FeatureSelectedEvent;
74	alfonx	559	import schmitzm.geotools.map.event.JMapPaneListener;
75	alfonx	97	import schmitzm.geotools.styling.StylingUtil;
76	alfonx	946	import schmitzm.geotools.styling.StylingUtil.SelectionStylesTypes;
77	alfonx	111	import skrueger.geotools.MapPaneToolBar;
78	alfonx	489	import skrueger.geotools.StyledFeaturesInterface;
79	alfonx	97
80			/**
81			* This class keeps the selection of a (feature) {@link JTable} synchronized
82			* with the {@link StyledLayerSelectionModel} of a layer. This is done by
83			* implementing:
84			* <ul>
85			* <li>a {@link PropertyChangeListener} which listens to the
86			* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
87			* selection</li>
88			* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
89			* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
90			* </ul>
91			* After creating, the instance of this synchronizer must be added as listener
92			* to both, the {@link StyledLayerSelectionModel} and the table's
93			* {@link ListSelectionModel}.
94			*
95			* @author <a href="mailto:[email protected]">Martin Schmitz</a>
96			* (University of Bonn/Germany)
97			*/
98			public class FeatureMapLayerSelectionSynchronizer extends
99	alfonx	106	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
100			implements JMapPaneListener {
101	alfonx	516
102	alfonx	97	/**
103	alfonx	516	* This constant is set as the {@link FeatureTypeStyle#getName()} attribute
104			* in the {@link FeatureTypeStyle}s that only exist to present the selected
105			* features
106			**/
107			public static final String SELECTION_STYLING_FTS_NAME = "SELECTION";
108
109			/**
110	alfonx	97	* Holds the {@link MapLayer} to keep synchronized with the layer selection
111			* model.
112			*/
113			protected final MapLayer mapLayer;
114	alfonx	489	protected final StyledFeaturesInterface<?> styledLayer;
115	alfonx	509	protected final SelectableXMapPane mapPane;
116	alfonx	111	private final MapPaneToolBar toolBar;
117	alfonx	97
118			/**
119			* Creates a new synchronizer
120			*
121			* @param layerSelModel
122			* layer selection model to keep synchronized with the
123			* {@link MapLayer}
124			*
125			* @param mapLayer
126			* {@link MapLayer} to keep synchronized with.
127			*/
128			public FeatureMapLayerSelectionSynchronizer(
129			StyledFeatureLayerSelectionModel layerSelModel,
130	alfonx	489	StyledFeaturesInterface<?> styledLayer, MapLayer mapLayer,
131	alfonx	509	SelectableXMapPane mapPane, MapPaneToolBar toolBar) {
132	alfonx	97
133			super(layerSelModel);
134	alfonx	224	this.styledLayer = styledLayer;
135	alfonx	97
136			this.mapLayer = mapLayer;
137			this.mapPane = mapPane;
138	alfonx	111	this.toolBar = toolBar;
139	alfonx	97	}
140
141			/**
142			* Called by {@link StyledLayerSelectionModel} when a the selection on other
143			* selection components (map, chart, ...) has changed. When calling this
144			*
145			* method changes the {@link MapLayer} selection according to the
146			* {@link StyledLayerSelectionModel} selection.
147			*
148			* @param evt
149			* an event
150			*/
151			@Override
152			public void propertyChange(PropertyChangeEvent evt) {
153	alfonx	151
154			if (!isEnabled())
155			return;
156
157	alfonx	97	if (!(evt instanceof StyledLayerSelectionEvent))
158			return;
159			StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
160			// Only react on own layer and ignore events invoked by
161			// this component itself
162			if (selEvt.getEmitter() != layerSelModel \|\| selectionChangeCausedByMe)
163			return;
164			// Apply new selection on table (except this event is one of
165			// some more events)
166	alfonx	111	Vector<String> newSelection = layerSelModel.getSelection();
167	alfonx	97	if (newSelection == null)
168			return;
169
170			// Avoid event circles in valueChanged(..)
171			selectionChangeCausedByMe = true;
172
173			changeLayerStyle(newSelection);
174
175			// Danger of event circles in valueChanged(..) banned
176			selectionChangeCausedByMe = false;
177			}
178
179	alfonx	151	/**
180			* Changes the Style of the {@link MapLayer} to reflect changes of the
181			* selection.
182			*
183			* @param newSelection
184	alfonx	318	* A {@link Vector} of SimpleFeature-IDs that are selected.
185	alfonx	151	*/
186	alfonx	111	private void changeLayerStyle(final Vector<String> newSelection) {
187	alfonx	97	try {
188	alfonx	455
189	alfonx	412	Style originalStyle = mapLayer.getStyle();
190	alfonx	500
191	alfonx	97	if (newSelection.isEmpty()) {
192
193	alfonx	412	// Check if the Style contains a SELECTION FTS
194	alfonx	455
195			FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
196			.toArray(new FeatureTypeStyle[] {}).clone();
197
198	alfonx	412	for (FeatureTypeStyle fts : clone) {
199			if (fts.getName() != null
200	alfonx	516	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
201	alfonx	412	originalStyle.featureTypeStyles().remove(fts);
202	alfonx	455
203	alfonx	559	mapLayer.setStyle(originalStyle);
204			// replaceRenderer();
205			// // mapPane.refresh();
206	alfonx	106
207	alfonx	412	return;
208			}
209			}
210
211	alfonx	97	} else {
212	alfonx	500
213	alfonx	100	LOGGER.debug("SELECTION .. change style");
214	alfonx	106
215	alfonx	500	// Saving a repaint if the selection didn't change
216			if (!selectionChanged(newSelection, originalStyle)) {
217			return;
218			}
219
220	alfonx	123	// We take Style from the MapLayer that is displayed at the
221	alfonx	224	// moment. We do not use the styledLayer.getStyle, because in
222	alfonx	123	// the atlas, this always return the default style, but
223	alfonx	224	// additional styles might be selected.
224	alfonx	867	// Taking the style from the mapLayer indicates, that we have to
225	alfonx	125	// remove any selection rules first.
226	alfonx	101
227	alfonx	412	FeatureTypeStyle selectionFTStyle = StylingUtil
228	alfonx	946	.createSelectionFTStyle(styledLayer.getGeoObject(),
229			SelectionStylesTypes.LeftTop2RightBottom_lines);
230	alfonx	106
231	alfonx	516	selectionFTStyle.setName(SELECTION_STYLING_FTS_NAME);
232	alfonx	123
233	alfonx	158	/**
234			*
235			* Add a Filter to the selectionMapStyle, so that it is only
236			* used on objects that are selected. <br/>
237	alfonx	489	* To optimize rendering speed, the filter checks whether more
238			* than half of the features are selected. If so, the filter is
239			* inverted to be shorter.
240	alfonx	158	*
241			*/
242	alfonx	489	final FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollectionFiltered = styledLayer
243			.getFeatureCollectionFiltered();
244			if (newSelection.size() > featureCollectionFiltered.size() / 2) {
245			FeatureIterator<SimpleFeature> iterator = featureCollectionFiltered
246			.features();
247			Set<FeatureId> antiFids = new HashSet<FeatureId>();
248			try {
249			while (iterator.hasNext()) {
250			SimpleFeature next = iterator.next();
251			if (!newSelection.contains(next.getID()))
252			antiFids.add(FilterUtil.FILTER_FAC2
253			.featureId(next.getID()));
254			}
255
256			selectionFTStyle.rules().get(0).setFilter(
257			FilterUtil.FILTER_FAC2
258			.not(FilterUtil.FILTER_FAC2
259			.id(antiFids)));
260
261			} finally {
262			featureCollectionFiltered.close(iterator);
263			}
264			} else {
265			Set<FeatureId> fids = new HashSet<FeatureId>();
266			for (String fid : newSelection) {
267	alfonx	671	if (fid != null)
268			fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
269	alfonx	489	}
270
271			selectionFTStyle.rules().get(0).setFilter(
272			FilterUtil.FILTER_FAC2.id(fids));
273	alfonx	158	}
274	alfonx	106
275	alfonx	412	// Maybe there has already been another selection
276			// FeatureTypeStyle... Let's replace it...
277			boolean foundAndReplaced = false;
278			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
279			if (fts.getName() != null
280	alfonx	516	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
281	alfonx	412	foundAndReplaced = true;
282			fts.rules().clear();
283			fts.rules().addAll(selectionFTStyle.rules());
284			break;
285			}
286	alfonx	123	}
287	alfonx	412	if (!foundAndReplaced) {
288			originalStyle.featureTypeStyles().add(selectionFTStyle);
289			}
290	alfonx	151
291	alfonx	412	// Refresh the map
292	alfonx	455	// mapPane.refresh();
293
294	alfonx	419	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
295			dsv.visit(originalStyle);
296	alfonx	455	Style newStyle = (Style) dsv.getCopy();
297	mojays	493
298	alfonx	500	// SK-Debug
299			try {
300			//
301			StylingUtil.saveStyleToSLD(newStyle, new File(
302			"/home/stefan/Desktop/selection.sld"));
303			} catch (Exception e) {
304			}
305	mojays	493
306			// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
307	alfonx	489	// dsv.visit(originalStyle);
308			// Style newStyle = originalStyle;
309
310	alfonx	455	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
311			// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
312	alfonx	419	mapLayer.setStyle(newStyle);
313	alfonx	455
314	alfonx	419	replaceRenderer();
315	alfonx	97	}
316
317			} catch (Exception e) {
318			LOGGER.error("Error while trying to create a selection style", e);
319			}
320			}
321
322	alfonx	500	/**
323	alfonx	560	* Analyzes whether the selection has changed in comparison to the selection
324	alfonx	500	* stored in the mapLayer.Style
325			*
326	alfonx	946	* @param newSelection
327			* a List<String> of all newly selected FIDs
328			* @param originalStyle
329			* the original {@link Style} that has an earlier selection coded
330			* into the {@link Style}
331	alfonx	560	* @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	740	public void performMapPaneEvent(XMapPaneEvent 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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