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.gui.XMapPaneEvent;
import schmitzm.geotools.map.event.FeatureSelectedEvent;
import schmitzm.geotools.map.event.JMapPaneListener;
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(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	/*******************************************************************************
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.gui.XMapPaneEvent;
73	import schmitzm.geotools.map.event.FeatureSelectedEvent;
74	import schmitzm.geotools.map.event.JMapPaneListener;
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	if (fid != null)
266	fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
267	}
268
269	selectionFTStyle.rules().get(0).setFilter(
270	FilterUtil.FILTER_FAC2.id(fids));
271	}
272
273	// 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	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
279	foundAndReplaced = true;
280	fts.rules().clear();
281	fts.rules().addAll(selectionFTStyle.rules());
282	break;
283	}
284	}
285	if (!foundAndReplaced) {
286	originalStyle.featureTypeStyles().add(selectionFTStyle);
287	}
288
289	// Refresh the map
290	// mapPane.refresh();
291
292	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
293	dsv.visit(originalStyle);
294	Style newStyle = (Style) dsv.getCopy();
295
296	// SK-Debug
297	try {
298	//
299	StylingUtil.saveStyleToSLD(newStyle, new File(
300	"/home/stefan/Desktop/selection.sld"));
301	} catch (Exception e) {
302	}
303
304	// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
305	// dsv.visit(originalStyle);
306	// Style newStyle = originalStyle;
307
308	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
309	// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
310	mapLayer.setStyle(newStyle);
311
312	replaceRenderer();
313	}
314
315	} catch (Exception e) {
316	LOGGER.error("Error while trying to create a selection style", e);
317	}
318	}
319
320	/**
321	* Analyzes whether the selection has changed in comparison to the selection
322	* stored in the mapLayer.Style
323	*
324	* @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	*/
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	* one rendering!
336	*/
337	for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
338
339	if (fts.getName() != null
340	&& fts.getName().equals(SELECTION_STYLING_FTS_NAME)) {
341
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	if (antiFids.size() + newSelection.size() != styledLayer
370	.getFeatureCollectionFiltered().size())
371	return true;
372
373	} 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	/**
410	* Replaces the local renderer
411	*/
412	private void replaceRenderer() {
413	}
414
415	/**
416	* Used to synchronize {@link FeatureSelectedEvent}s with the
417	* {@link StyledFeatureLayerSelectionModel}
418	*/
419	@Override
420	public void performMapPaneEvent(XMapPaneEvent e) {
421
422	// 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	/**
432	* Only listen to FeatureSelectedEvents if an appropriate tool is
433	* 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	// only listen to events directly coming from JMapPane
443	// selection (ignore selections from FilterDialog)
444	if (e.getSourceObject() != this.mapPane)
445	return;
446
447	/**
448	* Checking, that the FeatureSelectedEvent actually contains features
449	* from this layer
450	*/
451	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
452	final String sourceID = fse.getSourceLayer().getTitle();
453	final String syncForID = mapLayer.getTitle();
454	if (sourceID != null && syncForID != null
455	&& !sourceID.equals(syncForID)) {
456	LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
457	return;
458	}
459
460	// LOGGER.debug("do event " + fse);
461
462	// Avoid event circles in propertyChange(..)
463	selectionChangeCausedByMe = true;
464
465	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
466	.getSelectionResult();
467	Iterator<SimpleFeature> fi = selectionResult.iterator();
468	try {
469
470	// reset the selection of the DpLayerSelectionModel
471	// layerSelModel.setValueIsAdjusting(true);
472
473	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
474	layerSelModel.setValueIsAdjusting(true);
475
476	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
485	for (int fIdx = 0; fi.hasNext(); fIdx++) {
486	SimpleFeature f = fi.next();
487	layerSelModel.addSelection(f.getID());
488	}
489
490	// LOGGER.debug("Setting selection to " + fi.());
491
492	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	}
501
502	} finally {
503	selectionResult.close(fi);
504	}
505
506	// Show selected features in the map, which is not automatically done by
507	// the origin: FeatureSelectedEvent
508	changeLayerStyle(layerSelModel.getSelection());
509
510	// Danger of event circles in propertyChange(..) banned
511	selectionChangeCausedByMe = false;
512	}
513
514	}
Name	Value
svn:eol-style	native
svn:keywords	Id
svn:mime-type	text/plain