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.awt.RenderingHints;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.util.HashMap;
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.renderer.GTRenderer;
import org.geotools.renderer.label.LabelCacheImpl;
import org.geotools.renderer.lite.StreamingRenderer;
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.GTUtil;
import schmitzm.geotools.gui.JMapPane;
import schmitzm.geotools.map.event.FeatureSelectedEvent;
import schmitzm.geotools.map.event.JMapPaneEvent;
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 {
        public static final String SELECTION_STYLING = "SELECTION";
        /**
         * Holds the {@link MapLayer} to keep synchronized with the layer selection
         * model.
         */
        protected final MapLayer mapLayer;
        protected final StyledFeaturesInterface<?> styledLayer;
        protected final JMapPane mapPane;
        private final MapPaneToolBar toolBar;
        private final HashMap<Object, Object> defaultGTRenderingHints;

        /**
         * 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,
                        JMapPane mapPane, MapPaneToolBar toolBar,
                        HashMap<Object, Object> defaultGTRenderingHints) {

                super(layerSelModel);
                this.styledLayer = styledLayer;

                this.mapLayer = mapLayer;
                this.mapPane = mapPane;
                this.toolBar = toolBar;
                if (defaultGTRenderingHints != null)
                        this.defaultGTRenderingHints = defaultGTRenderingHints;
                else
                        this.defaultGTRenderingHints = new HashMap<Object, Object>();
        }

        /**
         * 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)) {
                                                originalStyle.featureTypeStyles().remove(fts);

                                                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);

                                /**
                                 * 
                                 * 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)) {
                                                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);
                }
        }

        /**
         * Analyses whether the selection has changed in comparison to the selection
         * stored in the mapLayer.Style
         * 
         * @param newSelection
         * @param originalStyle
         * @return
         */
        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 paint!
                 */
                for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {

                        if (fts.getName() != null
                                        && fts.getName().equals(SELECTION_STYLING)) {

                                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;
                                                }
                                        }

                                } 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;
        }

        private void replaceRenderer() {
                //
                // // Has to be done before we apply the new Renderer
                // mapLayer.setStyle(style);

                GTRenderer oldRenderer = mapPane.getRenderer();

                /**
                 * Explicitly putting a new instance of LabelCacheDefault into the
                 * renderer instance, so JMapPane doesn't reuse the old one. This is
                 * very useful when changing the TextSymbolizer with AtlasStyler<br/>
                 * SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
                 * reuse the old Renderer - better to create a new one!
                 */
                final GTRenderer newRenderer = GTUtil.createGTRenderer();

                final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
                rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
                                new LabelCacheImpl());

                newRenderer.setRendererHints(rendererHints);
                mapPane.setRenderer(newRenderer);

                if (oldRenderer != null) {

                        RenderingHints java2DHints = oldRenderer.getJava2DHints();
                        if (java2DHints != null) {
                                newRenderer.setJava2DHints(java2DHints);
                        }

                        oldRenderer.setContext(null);
                        oldRenderer = null;
                }

                mapPane.refresh();

        }

        /**
         * Used to synchronize {@link FeatureSelectedEvent}s with the
         * {@link StyledFeatureLayerSelectionModel}
         */
        @Override
        public void performMapPaneEvent(JMapPaneEvent e) {

                // Ignore event if it is caused by us or the synchronizer is disabled.
                if (!isEnabled() || selectionChangeCausedByMe)
                        return;

                if (!(e instanceof FeatureSelectedEvent)) {
                        // LOGGER.debug("Ignoring event " + e);
                        return;
                }

                /**
                 * Only listen to FeatureSelectedEvents if an appropriate tool is
                 * selected.
                 */
                final int selectedTool = toolBar.getSelectedTool();
                if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
                                && selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
                                && selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
                        return;
                }

                // only listen to events directly coming from JMapPane
                // selection (ignore selections from FilterDialog)
                if (e.getSourceObject() != this.mapPane)
                        return;

                /**
                 * Checking, that the FeatureSelectedEvent actually contains features
                 * from this layer
                 */
                FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
                final String sourceID = fse.getSourceLayer().getTitle();
                final String syncForID = mapLayer.getTitle();
                if (sourceID != null && syncForID != null
                                && !sourceID.equals(syncForID)) {
                        LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
                        return;
                }

                // LOGGER.debug("do event " + fse);

                // Avoid event circles in propertyChange(..)
                selectionChangeCausedByMe = true;

                final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
                                .getSelectionResult();
                Iterator<SimpleFeature> fi = selectionResult.iterator();
                try {

                        // reset the selection of the DpLayerSelectionModel
                        // layerSelModel.setValueIsAdjusting(true);

                        if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
                                layerSelModel.setValueIsAdjusting(true);

                                for (int fIdx = 0; fi.hasNext(); fIdx++) {
                                        SimpleFeature f = fi.next();
                                        layerSelModel.addSelection(f.getID());
                                }
                                layerSelModel.setValueIsAdjusting(false);
                        } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
                                layerSelModel.setValueIsAdjusting(true);
                                layerSelModel.clearSelection();

                                for (int fIdx = 0; fi.hasNext(); fIdx++) {
                                        SimpleFeature f = fi.next();
                                        layerSelModel.addSelection(f.getID());
                                }

                                // LOGGER.debug("Setting selection to " + fi.());

                                layerSelModel.setValueIsAdjusting(false);
                        } else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
                                layerSelModel.setValueIsAdjusting(true);
                                for (int fIdx = 0; fi.hasNext(); fIdx++) {
                                        SimpleFeature f = fi.next();
                                        layerSelModel.removeSelection(f.getID());
                                }
                                layerSelModel.setValueIsAdjusting(false);
                        }

                } finally {
                        selectionResult.close(fi);
                }

                // Show selected features in the map, which is not automatically done by
                // the origin: FeatureSelectedEvent
                changeLayerStyle(layerSelModel.getSelection());

                // Danger of event circles in propertyChange(..) banned
                selectionChangeCausedByMe = false;
        }

}
1	alfonx	244	/*******************************************************************************
2			* Copyright (c) 2009 Martin O. J. Schmitz.
3			*
4			* This file is part of the SCHMITZM library - a collection of utility
5	alfonx	256	* classes based on Java 1.6, focusing (not only) on Java Swing
6	alfonx	244	* and the Geotools library.
7			*
8			* The SCHMITZM project is hosted at:
9			* http://wald.intevation.org/projects/schmitzm/
10			*
11			* This program is free software; you can redistribute it and/or
12			* modify it under the terms of the GNU Lesser General Public License
13			* as published by the Free Software Foundation; either version 3
14			* of the License, or (at your option) any later version.
15			*
16			* This program is distributed in the hope that it will be useful,
17			* but WITHOUT ANY WARRANTY; without even the implied warranty of
18			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19			* GNU General Public License for more details.
20			*
21			* You should have received a copy of the GNU Lesser General Public License (license.txt)
22			* along with this program; if not, write to the Free Software
23			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24			* or try this link: http://www.gnu.org/licenses/lgpl.html
25			*
26			* Contributors:
27			* Martin O. J. Schmitz - initial API and implementation
28			* Stefan A. Krüger - additional utility classes
29			******************************************************************************/
30	alfonx	97	/**
31			Copyright 2008 Stefan Alfons Krüger
32	alfonx	409
33	alfonx	97	atlas-framework - This file is part of the Atlas Framework
34
35			This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
36			This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
37			You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
38
39			Diese Bibliothek ist freie Software; Sie dürfen sie unter den Bedingungen der GNU Lesser General Public License, wie von der Free Software Foundation veröffentlicht, weiterverteilen und/oder modifizieren; entweder gemäß Version 2.1 der Lizenz oder (nach Ihrer Option) jeder späteren Version.
40			Diese Bibliothek wird in der Hoffnung weiterverbreitet, daß sie nützlich sein wird, jedoch OHNE IRGENDEINE GARANTIE, auch ohne die implizierte Garantie der MARKTREIFE oder der VERWENDBARKEIT FÜR EINEN BESTIMMTEN ZWECK. Mehr Details finden Sie in der GNU Lesser General Public License.
41			Sie sollten eine Kopie der GNU Lesser General Public License zusammen mit dieser Bibliothek erhalten haben; falls nicht, schreiben Sie an die Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA.
42			**/
43			package skrueger.geotools.selection;
44
45	alfonx	419	import java.awt.RenderingHints;
46	alfonx	97	import java.beans.PropertyChangeEvent;
47			import java.beans.PropertyChangeListener;
48	alfonx	489	import java.io.File;
49	alfonx	419	import java.util.HashMap;
50	alfonx	158	import java.util.HashSet;
51	alfonx	409	import java.util.Iterator;
52	alfonx	158	import java.util.Set;
53	alfonx	97	import java.util.Vector;
54
55			import javax.swing.JTable;
56			import javax.swing.ListSelectionModel;
57			import javax.swing.event.ListSelectionListener;
58
59	alfonx	455	import org.geotools.feature.FeatureCollection;
60	alfonx	489	import org.geotools.feature.FeatureIterator;
61	alfonx	500	import org.geotools.filter.FidFilterImpl;
62	alfonx	97	import org.geotools.map.MapLayer;
63	alfonx	419	import org.geotools.renderer.GTRenderer;
64			import org.geotools.renderer.label.LabelCacheImpl;
65			import org.geotools.renderer.lite.StreamingRenderer;
66	alfonx	123	import org.geotools.styling.FeatureTypeStyle;
67	alfonx	97	import org.geotools.styling.Style;
68	alfonx	419	import org.geotools.styling.visitor.DuplicatingStyleVisitor;
69	mojays	325	import org.opengis.feature.simple.SimpleFeature;
70	alfonx	455	import org.opengis.feature.simple.SimpleFeatureType;
71	alfonx	500	import org.opengis.filter.Filter;
72			import org.opengis.filter.Not;
73	alfonx	158	import org.opengis.filter.identity.FeatureId;
74	alfonx	97
75	alfonx	158	import schmitzm.geotools.FilterUtil;
76	alfonx	438	import schmitzm.geotools.GTUtil;
77	alfonx	97	import schmitzm.geotools.gui.JMapPane;
78			import schmitzm.geotools.map.event.FeatureSelectedEvent;
79			import schmitzm.geotools.map.event.JMapPaneEvent;
80			import schmitzm.geotools.map.event.JMapPaneListener;
81			import schmitzm.geotools.styling.StylingUtil;
82	alfonx	111	import skrueger.geotools.MapPaneToolBar;
83	alfonx	489	import skrueger.geotools.StyledFeaturesInterface;
84	alfonx	97
85			/**
86			* This class keeps the selection of a (feature) {@link JTable} synchronized
87			* with the {@link StyledLayerSelectionModel} of a layer. This is done by
88			* implementing:
89			* <ul>
90			* <li>a {@link PropertyChangeListener} which listens to the
91			* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
92			* selection</li>
93			* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
94			* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
95			* </ul>
96			* After creating, the instance of this synchronizer must be added as listener
97			* to both, the {@link StyledLayerSelectionModel} and the table's
98			* {@link ListSelectionModel}.
99			*
100			* @author <a href="mailto:[email protected]">Martin Schmitz</a>
101			* (University of Bonn/Germany)
102			*/
103			public class FeatureMapLayerSelectionSynchronizer extends
104	alfonx	106	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
105			implements JMapPaneListener {
106	alfonx	111	public static final String SELECTION_STYLING = "SELECTION";
107	alfonx	97	/**
108			* Holds the {@link MapLayer} to keep synchronized with the layer selection
109			* model.
110			*/
111			protected final MapLayer mapLayer;
112	alfonx	489	protected final StyledFeaturesInterface<?> styledLayer;
113	alfonx	97	protected final JMapPane mapPane;
114	alfonx	111	private final MapPaneToolBar toolBar;
115	alfonx	419	private final HashMap<Object, Object> defaultGTRenderingHints;
116	alfonx	97
117			/**
118			* Creates a new synchronizer
119			*
120			* @param layerSelModel
121			* layer selection model to keep synchronized with the
122			* {@link MapLayer}
123			*
124			* @param mapLayer
125			* {@link MapLayer} to keep synchronized with.
126			*/
127			public FeatureMapLayerSelectionSynchronizer(
128			StyledFeatureLayerSelectionModel layerSelModel,
129	alfonx	489	StyledFeaturesInterface<?> styledLayer, MapLayer mapLayer,
130	alfonx	455	JMapPane mapPane, MapPaneToolBar toolBar,
131			HashMap<Object, Object> defaultGTRenderingHints) {
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	419	if (defaultGTRenderingHints != null)
140			this.defaultGTRenderingHints = defaultGTRenderingHints;
141	alfonx	455	else
142	alfonx	419	this.defaultGTRenderingHints = new HashMap<Object, Object>();
143	alfonx	97	}
144
145			/**
146			* Called by {@link StyledLayerSelectionModel} when a the selection on other
147			* selection components (map, chart, ...) has changed. When calling this
148			*
149			* method changes the {@link MapLayer} selection according to the
150			* {@link StyledLayerSelectionModel} selection.
151			*
152			* @param evt
153			* an event
154			*/
155			@Override
156			public void propertyChange(PropertyChangeEvent evt) {
157	alfonx	151
158			if (!isEnabled())
159			return;
160
161	alfonx	97	if (!(evt instanceof StyledLayerSelectionEvent))
162			return;
163			StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
164			// Only react on own layer and ignore events invoked by
165			// this component itself
166			if (selEvt.getEmitter() != layerSelModel \|\| selectionChangeCausedByMe)
167			return;
168			// Apply new selection on table (except this event is one of
169			// some more events)
170	alfonx	111	Vector<String> newSelection = layerSelModel.getSelection();
171	alfonx	97	if (newSelection == null)
172			return;
173
174			// Avoid event circles in valueChanged(..)
175			selectionChangeCausedByMe = true;
176
177			changeLayerStyle(newSelection);
178
179			// Danger of event circles in valueChanged(..) banned
180			selectionChangeCausedByMe = false;
181			}
182
183	alfonx	151	/**
184			* Changes the Style of the {@link MapLayer} to reflect changes of the
185			* selection.
186			*
187			* @param newSelection
188	alfonx	318	* A {@link Vector} of SimpleFeature-IDs that are selected.
189	alfonx	151	*/
190	alfonx	111	private void changeLayerStyle(final Vector<String> newSelection) {
191	alfonx	97	try {
192	alfonx	455
193	alfonx	412	Style originalStyle = mapLayer.getStyle();
194	alfonx	500
195	alfonx	97	if (newSelection.isEmpty()) {
196
197	alfonx	412	// Check if the Style contains a SELECTION FTS
198	alfonx	455
199			FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
200			.toArray(new FeatureTypeStyle[] {}).clone();
201
202	alfonx	412	for (FeatureTypeStyle fts : clone) {
203			if (fts.getName() != null
204			&& fts.getName().equals(SELECTION_STYLING)) {
205			originalStyle.featureTypeStyles().remove(fts);
206	alfonx	455
207	alfonx	419	replaceRenderer();
208	alfonx	455	// mapPane.refresh();
209	alfonx	106
210	alfonx	412	return;
211			}
212			}
213
214	alfonx	97	} else {
215	alfonx	500
216	alfonx	100	LOGGER.debug("SELECTION .. change style");
217	alfonx	106
218	alfonx	500	// Saving a repaint if the selection didn't change
219			if (!selectionChanged(newSelection, originalStyle)) {
220			return;
221			}
222
223	alfonx	123	// We take Style from the MapLayer that is displayed at the
224	alfonx	224	// moment. We do not use the styledLayer.getStyle, because in
225	alfonx	123	// the atlas, this always return the default style, but
226	alfonx	224	// additional styles might be selected.
227	alfonx	123	// Taking the style from the mapLayer indicated, that we have to
228	alfonx	125	// remove any selection rules first.
229	alfonx	101
230	alfonx	412	FeatureTypeStyle selectionFTStyle = StylingUtil
231	alfonx	224	.createSelectionStyle(styledLayer.getGeoObject());
232	alfonx	106
233	alfonx	412	selectionFTStyle.setName(SELECTION_STYLING);
234	alfonx	123
235	alfonx	158	/**
236			*
237			* Add a Filter to the selectionMapStyle, so that it is only
238			* used on objects that are selected. <br/>
239	alfonx	489	* To optimize rendering speed, the filter checks whether more
240			* than half of the features are selected. If so, the filter is
241			* inverted to be shorter.
242	alfonx	158	*
243			*/
244	alfonx	489	final FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollectionFiltered = styledLayer
245			.getFeatureCollectionFiltered();
246			if (newSelection.size() > featureCollectionFiltered.size() / 2) {
247			FeatureIterator<SimpleFeature> iterator = featureCollectionFiltered
248			.features();
249			Set<FeatureId> antiFids = new HashSet<FeatureId>();
250			try {
251			while (iterator.hasNext()) {
252			SimpleFeature next = iterator.next();
253			if (!newSelection.contains(next.getID()))
254			antiFids.add(FilterUtil.FILTER_FAC2
255			.featureId(next.getID()));
256			}
257
258			selectionFTStyle.rules().get(0).setFilter(
259			FilterUtil.FILTER_FAC2
260			.not(FilterUtil.FILTER_FAC2
261			.id(antiFids)));
262
263			} finally {
264			featureCollectionFiltered.close(iterator);
265			}
266			} else {
267			Set<FeatureId> fids = new HashSet<FeatureId>();
268			for (String fid : newSelection) {
269			fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
270			}
271
272			selectionFTStyle.rules().get(0).setFilter(
273			FilterUtil.FILTER_FAC2.id(fids));
274	alfonx	158	}
275	alfonx	106
276	alfonx	412	// Maybe there has already been another selection
277			// FeatureTypeStyle... Let's replace it...
278			boolean foundAndReplaced = false;
279			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
280			if (fts.getName() != null
281			&& fts.getName().equals(SELECTION_STYLING)) {
282			foundAndReplaced = true;
283			fts.rules().clear();
284			fts.rules().addAll(selectionFTStyle.rules());
285			break;
286			}
287	alfonx	123	}
288	alfonx	412	if (!foundAndReplaced) {
289			originalStyle.featureTypeStyles().add(selectionFTStyle);
290			}
291	alfonx	151
292	alfonx	412	// Refresh the map
293	alfonx	455	// mapPane.refresh();
294
295	alfonx	419	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
296			dsv.visit(originalStyle);
297	alfonx	455	Style newStyle = (Style) dsv.getCopy();
298	mojays	493
299	alfonx	500	// SK-Debug
300			try {
301			//
302			StylingUtil.saveStyleToSLD(newStyle, new File(
303			"/home/stefan/Desktop/selection.sld"));
304			} catch (Exception e) {
305			}
306	mojays	493
307			// DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
308	alfonx	489	// dsv.visit(originalStyle);
309			// Style newStyle = originalStyle;
310
311	alfonx	455	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
312			// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
313	alfonx	419	mapLayer.setStyle(newStyle);
314	alfonx	455
315	alfonx	419	replaceRenderer();
316	alfonx	97	}
317
318			} catch (Exception e) {
319			LOGGER.error("Error while trying to create a selection style", e);
320			}
321			}
322
323	alfonx	500	/**
324			* Analyses whether the selection has changed in comparison to the selection
325			* stored in the mapLayer.Style
326			*
327			* @param newSelection
328			* @param originalStyle
329			* @return
330			*/
331			private boolean selectionChanged(Vector<String> newSelection,
332			Style originalStyle) {
333
334			boolean SELECTION_STYLING_foundInMapStyle = false;
335
336			/**
337			* testing, whether the selection really changed. If not, we can save
338			* one paint!
339			*/
340			for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
341
342			if (fts.getName() != null
343			&& fts.getName().equals(SELECTION_STYLING)) {
344
345			SELECTION_STYLING_foundInMapStyle = true;
346
347			Filter filter = fts.rules().get(0).getFilter();
348			if (filter instanceof Not) {
349			FidFilterImpl antiOrigFidsFilter = (FidFilterImpl) ((Not) filter)
350			.getFilter();
351
352			// Check one way
353			final Set<String> antiFids = antiOrigFidsFilter
354			.getFidsSet();
355
356			if (antiFids.isEmpty() && !newSelection.isEmpty())
357			return true;
358
359			for (String fid : antiFids) {
360			if (newSelection.contains(fid)) {
361			return true;
362			}
363			}
364
365			// Check the other way
366			for (String fid : newSelection) {
367			if (antiFids.contains(fid)) {
368			return true;
369			}
370			}
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	alfonx	419	private void replaceRenderer() {
409	alfonx	455	//
410			// // Has to be done before we apply the new Renderer
411			// mapLayer.setStyle(style);
412	alfonx	419
413			GTRenderer oldRenderer = mapPane.getRenderer();
414
415			/**
416			* Explicitly putting a new instance of LabelCacheDefault into the
417			* renderer instance, so JMapPane doesn't reuse the old one. This is
418			* very useful when changing the TextSymbolizer with AtlasStyler<br/>
419			* SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
420			* reuse the old Renderer - better to create a new one!
421			*/
422	alfonx	440	final GTRenderer newRenderer = GTUtil.createGTRenderer();
423	alfonx	419
424			final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
425			rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
426			new LabelCacheImpl());
427
428			newRenderer.setRendererHints(rendererHints);
429			mapPane.setRenderer(newRenderer);
430
431			if (oldRenderer != null) {
432	alfonx	455
433	alfonx	419	RenderingHints java2DHints = oldRenderer.getJava2DHints();
434			if (java2DHints != null) {
435	alfonx	427	newRenderer.setJava2DHints(java2DHints);
436	alfonx	419	}
437	alfonx	455
438	alfonx	419	oldRenderer.setContext(null);
439			oldRenderer = null;
440			}
441	alfonx	455
442	alfonx	419	mapPane.refresh();
443
444			}
445
446	alfonx	151	/**
447			* Used to synchronize {@link FeatureSelectedEvent}s with the
448			* {@link StyledFeatureLayerSelectionModel}
449			*/
450	alfonx	97	@Override
451			public void performMapPaneEvent(JMapPaneEvent e) {
452	alfonx	106
453	alfonx	151	// Ignore event if it is caused by us or the synchronizer is disabled.
454			if (!isEnabled() \|\| selectionChangeCausedByMe)
455			return;
456
457			if (!(e instanceof FeatureSelectedEvent)) {
458			// LOGGER.debug("Ignoring event " + e);
459			return;
460			}
461
462	alfonx	111	/**
463	alfonx	151	* Only listen to FeatureSelectedEvents if an appropriate tool is
464	alfonx	111	* selected.
465			*/
466			final int selectedTool = toolBar.getSelectedTool();
467			if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
468			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
469			&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
470			return;
471			}
472
473	mojays	109	// only listen to events directly coming from JMapPane
474			// selection (ignore selections from FilterDialog)
475	alfonx	111	if (e.getSourceObject() != this.mapPane)
476			return;
477
478	alfonx	151	/**
479	alfonx	158	* Checking, that the FeatureSelectedEvent actually contains features
480			* from this layer
481	alfonx	151	*/
482	alfonx	492	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
483	alfonx	151	final String sourceID = fse.getSourceLayer().getTitle();
484			final String syncForID = mapLayer.getTitle();
485			if (sourceID != null && syncForID != null
486	alfonx	158	&& !sourceID.equals(syncForID)) {
487			LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
488	alfonx	97	return;
489	alfonx	151	}
490	alfonx	97
491	alfonx	489	// LOGGER.debug("do event " + fse);
492	alfonx	111
493	alfonx	97	// Avoid event circles in propertyChange(..)
494			selectionChangeCausedByMe = true;
495
496	alfonx	455	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
497			.getSelectionResult();
498			Iterator<SimpleFeature> fi = selectionResult.iterator();
499			try {
500	alfonx	97
501	alfonx	455	// reset the selection of the DpLayerSelectionModel
502			// layerSelModel.setValueIsAdjusting(true);
503	alfonx	97
504	alfonx	455	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
505			layerSelModel.setValueIsAdjusting(true);
506	alfonx	409
507	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
508			SimpleFeature f = fi.next();
509			layerSelModel.addSelection(f.getID());
510			}
511			layerSelModel.setValueIsAdjusting(false);
512			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
513			layerSelModel.setValueIsAdjusting(true);
514			layerSelModel.clearSelection();
515	alfonx	97
516	alfonx	455	for (int fIdx = 0; fi.hasNext(); fIdx++) {
517			SimpleFeature f = fi.next();
518			layerSelModel.addSelection(f.getID());
519			}
520	alfonx	111
521	alfonx	455	// LOGGER.debug("Setting selection to " + fi.());
522	alfonx	409
523	alfonx	455	layerSelModel.setValueIsAdjusting(false);
524			} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
525			layerSelModel.setValueIsAdjusting(true);
526			for (int fIdx = 0; fi.hasNext(); fIdx++) {
527			SimpleFeature f = fi.next();
528			layerSelModel.removeSelection(f.getID());
529			}
530			layerSelModel.setValueIsAdjusting(false);
531	alfonx	111	}
532	alfonx	455
533			} finally {
534			selectionResult.close(fi);
535	alfonx	151	}
536	alfonx	111
537			// Show selected features in the map, which is not automatically done by
538			// the origin: FeatureSelectedEvent
539	alfonx	97	changeLayerStyle(layerSelModel.getSelection());
540	alfonx	106
541	alfonx	97	// Danger of event circles in propertyChange(..) banned
542			selectionChangeCausedByMe = false;
543			}
544	alfonx	151
545	alfonx	97	}
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