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	/*******************************************************************************
2	* Copyright (c) 2009 Martin O. J. Schmitz.
3	*
4	* This file is part of the SCHMITZM library - a collection of utility
5	* classes based on Java 1.6, focusing (not only) on Java Swing
6	* 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	/**
31	Copyright 2008 Stefan Alfons Krüger
32
33	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	import java.io.File;
48	import java.util.HashSet;
49	import java.util.Iterator;
50	import java.util.Set;
51	import java.util.Vector;
52
53	import javax.swing.JTable;
54	import javax.swing.ListSelectionModel;
55	import javax.swing.event.ListSelectionListener;
56
57	import org.geotools.feature.FeatureCollection;
58	import org.geotools.feature.FeatureIterator;
59	import org.geotools.filter.FidFilterImpl;
60	import org.geotools.map.MapLayer;
61	import org.geotools.styling.FeatureTypeStyle;
62	import org.geotools.styling.Style;
63	import org.geotools.styling.visitor.DuplicatingStyleVisitor;
64	import org.opengis.feature.simple.SimpleFeature;
65	import org.opengis.feature.simple.SimpleFeatureType;
66	import org.opengis.filter.Filter;
67	import org.opengis.filter.Not;
68	import org.opengis.filter.identity.FeatureId;
69
70	import schmitzm.geotools.FilterUtil;
71	import schmitzm.geotools.gui.SelectableXMapPane;
72	import schmitzm.geotools.map.event.FeatureSelectedEvent;
73	import schmitzm.geotools.map.event.JMapPaneListener;
74	import schmitzm.geotools.map.event.MapPaneEvent;
75	import schmitzm.geotools.styling.StylingUtil;
76	import skrueger.geotools.MapPaneToolBar;
77	import skrueger.geotools.StyledFeaturesInterface;
78
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	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
99	implements JMapPaneListener {
100
101	/**
102	* 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	* Holds the {@link MapLayer} to keep synchronized with the layer selection
110	* model.
111	*/
112	protected final MapLayer mapLayer;
113	protected final StyledFeaturesInterface<?> styledLayer;
114	protected final SelectableXMapPane mapPane;
115	private final MapPaneToolBar toolBar;
116
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	StyledFeaturesInterface<?> styledLayer, MapLayer mapLayer,
130	SelectableXMapPane mapPane, MapPaneToolBar toolBar) {
131
132	super(layerSelModel);
133	this.styledLayer = styledLayer;
134
135	this.mapLayer = mapLayer;
136	this.mapPane = mapPane;
137	this.toolBar = toolBar;
138	}
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
153	if (!isEnabled())
154	return;
155
156	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	Vector<String> newSelection = layerSelModel.getSelection();
166	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	/**
179	* Changes the Style of the {@link MapLayer} to reflect changes of the
180	* selection.
181	*
182	* @param newSelection
183	* A {@link Vector} of SimpleFeature-IDs that are selected.
184	*/
185	private void changeLayerStyle(final Vector<String> newSelection) {
186	try {
187
188	Style originalStyle = mapLayer.getStyle();
189
190	if (newSelection.isEmpty()) {
191
192	// Check if the Style contains a SELECTION FTS
193
194	FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
195	.toArray(new FeatureTypeStyle[] {}).clone();
196
197	for (FeatureTypeStyle fts : clone) {
198	if (fts.getName() != null
199	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
200	originalStyle.featureTypeStyles().remove(fts);
201
202	mapLayer.setStyle(originalStyle);
203	// replaceRenderer();
204	// // mapPane.refresh();
205
206	return;
207	}
208	}
209
210	} else {
211
212	LOGGER.debug("SELECTION .. change style");
213
214	// Saving a repaint if the selection didn't change
215	if (!selectionChanged(newSelection, originalStyle)) {
216	return;
217	}
218
219	// We take Style from the MapLayer that is displayed at the
220	// moment. We do not use the styledLayer.getStyle, because in
221	// the atlas, this always return the default style, but
222	// additional styles might be selected.
223	// Taking the style from the mapLayer indicated, that we have to
224	// remove any selection rules first.
225
226	FeatureTypeStyle selectionFTStyle = StylingUtil
227	.createSelectionStyle(styledLayer.getGeoObject());
228
229	selectionFTStyle.setName(SELECTION_STYLING_FTS_NAME);
230
231	/**
232	*
233	* Add a Filter to the selectionMapStyle, so that it is only
234	* used on objects that are selected. <br/>
235	* 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	*
239	*/
240	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	}
271
272	// 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	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
278	foundAndReplaced = true;
279	fts.rules().clear();
280	fts.rules().addAll(selectionFTStyle.rules());
281	break;
282	}
283	}
284	if (!foundAndReplaced) {
285	originalStyle.featureTypeStyles().add(selectionFTStyle);
286	}
287
288	// Refresh the map
289	// mapPane.refresh();
290
291	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
292	dsv.visit(originalStyle);
293	Style newStyle = (Style) dsv.getCopy();
294
295	// SK-Debug
296	try {
297	//
298	StylingUtil.saveStyleToSLD(newStyle, new File(
299	"/home/stefan/Desktop/selection.sld"));
300	} catch (Exception e) {
301	}
302
303	// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
304	// dsv.visit(originalStyle);
305	// Style newStyle = originalStyle;
306
307	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
308	// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
309	mapLayer.setStyle(newStyle);
310
311	replaceRenderer();
312	}
313
314	} catch (Exception e) {
315	LOGGER.error("Error while trying to create a selection style", e);
316	}
317	}
318
319	/**
320	* Analyzes whether the selection has changed in comparison to the selection
321	* stored in the mapLayer.Style
322	*
323	* @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	*/
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	* one rendering!
335	*/
336	for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
337
338	if (fts.getName() != null
339	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
340
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	if (antiFids.size() + newSelection.size() != styledLayer
369	.getFeatureCollectionFiltered().size())
370	return true;
371
372	} 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	/**
409	* Replaces the local renderer
410	*/
411	private void replaceRenderer() {
412	}
413
414	/**
415	* Used to synchronize {@link FeatureSelectedEvent}s with the
416	* {@link StyledFeatureLayerSelectionModel}
417	*/
418	@Override
419	public void performMapPaneEvent(MapPaneEvent e) {
420
421	// 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	/**
431	* Only listen to FeatureSelectedEvents if an appropriate tool is
432	* 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	// only listen to events directly coming from JMapPane
442	// selection (ignore selections from FilterDialog)
443	if (e.getSourceObject() != this.mapPane)
444	return;
445
446	/**
447	* Checking, that the FeatureSelectedEvent actually contains features
448	* from this layer
449	*/
450	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
451	final String sourceID = fse.getSourceLayer().getTitle();
452	final String syncForID = mapLayer.getTitle();
453	if (sourceID != null && syncForID != null
454	&& !sourceID.equals(syncForID)) {
455	LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
456	return;
457	}
458
459	// LOGGER.debug("do event " + fse);
460
461	// Avoid event circles in propertyChange(..)
462	selectionChangeCausedByMe = true;
463
464	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
465	.getSelectionResult();
466	Iterator<SimpleFeature> fi = selectionResult.iterator();
467	try {
468
469	// reset the selection of the DpLayerSelectionModel
470	// layerSelModel.setValueIsAdjusting(true);
471
472	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
473	layerSelModel.setValueIsAdjusting(true);
474
475	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
484	for (int fIdx = 0; fi.hasNext(); fIdx++) {
485	SimpleFeature f = fi.next();
486	layerSelModel.addSelection(f.getID());
487	}
488
489	// LOGGER.debug("Setting selection to " + fi.());
490
491	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	}
500
501	} finally {
502	selectionResult.close(fi);
503	}
504
505	// Show selected features in the map, which is not automatically done by
506	// the origin: FeatureSelectedEvent
507	changeLayerStyle(layerSelModel.getSelection());
508
509	// Danger of event circles in propertyChange(..) banned
510	selectionChangeCausedByMe = false;
511	}
512
513	}
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