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.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.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.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.StyledLayerInterface;

/**
 * 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 StyledLayerInterface<?> 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,
                        StyledLayerInterface<?> 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");

                                // 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/>
                                 * 
                                 * Note 1:<br/>
                                 * It is NEVER allowed to GeoTools extend Filter () { .. } (and
                                 * write tests into the evaluate block). Especially for the
                                 * ShapeFileRenderer, we may only use a geotools Filter.<br/>
                                 * 
                                 * Note 2:<br/>
                                 * The FilterUtil.FILTER_FAC2.id(fids) wants a set of
                                 * FeatureId-Objects!
                                 */

                                Set<FeatureId> fids = new HashSet<FeatureId>();
                                for (String fid : newSelection) {
                                        fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
                                }
                                
                                LOGGER.debug("The selection filter:"+fids);

                                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();

                                // 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);
                }
        }

        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;

                FeatureSelectedEvent fse = (FeatureSelectedEvent) e;

                /**
                 * Checking, that the FeatureSelectedEvent actually contains features
                 * from this layer
                 */
                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.awt.RenderingHints;
46	import java.beans.PropertyChangeEvent;
47	import java.beans.PropertyChangeListener;
48	import java.util.HashMap;
49	import java.util.HashSet;
50	import java.util.Iterator;
51	import java.util.Set;
52	import java.util.Vector;
53
54	import javax.swing.JTable;
55	import javax.swing.ListSelectionModel;
56	import javax.swing.event.ListSelectionListener;
57
58	import org.geotools.feature.FeatureCollection;
59	import org.geotools.map.MapLayer;
60	import org.geotools.renderer.GTRenderer;
61	import org.geotools.renderer.label.LabelCacheImpl;
62	import org.geotools.renderer.lite.StreamingRenderer;
63	import org.geotools.styling.FeatureTypeStyle;
64	import org.geotools.styling.Style;
65	import org.geotools.styling.visitor.DuplicatingStyleVisitor;
66	import org.opengis.feature.simple.SimpleFeature;
67	import org.opengis.feature.simple.SimpleFeatureType;
68	import org.opengis.filter.identity.FeatureId;
69
70	import schmitzm.geotools.FilterUtil;
71	import schmitzm.geotools.GTUtil;
72	import schmitzm.geotools.gui.JMapPane;
73	import schmitzm.geotools.map.event.FeatureSelectedEvent;
74	import schmitzm.geotools.map.event.JMapPaneEvent;
75	import schmitzm.geotools.map.event.JMapPaneListener;
76	import schmitzm.geotools.styling.StylingUtil;
77	import skrueger.geotools.MapPaneToolBar;
78	import skrueger.geotools.StyledLayerInterface;
79
80	/**
81	* This class keeps the selection of a (feature) {@link JTable} synchronized
82	* with the {@link StyledLayerSelectionModel} of a layer. This is done by
83	* implementing:
84	* <ul>
85	* <li>a {@link PropertyChangeListener} which listens to the
86	* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
87	* selection</li>
88	* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
89	* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
90	* </ul>
91	* After creating, the instance of this synchronizer must be added as listener
92	* to both, the {@link StyledLayerSelectionModel} and the table's
93	* {@link ListSelectionModel}.
94	*
95	* @author <a href="mailto:[email protected]">Martin Schmitz</a>
96	* (University of Bonn/Germany)
97	*/
98	public class FeatureMapLayerSelectionSynchronizer extends
99	StyledLayerSelectionModelSynchronizer<StyledFeatureLayerSelectionModel>
100	implements JMapPaneListener {
101	public static final String SELECTION_STYLING = "SELECTION";
102	/**
103	* Holds the {@link MapLayer} to keep synchronized with the layer selection
104	* model.
105	*/
106	protected final MapLayer mapLayer;
107	protected final StyledLayerInterface<?> styledLayer;
108	protected final JMapPane mapPane;
109	private final MapPaneToolBar toolBar;
110	private final HashMap<Object, Object> defaultGTRenderingHints;
111
112	/**
113	* Creates a new synchronizer
114	*
115	* @param layerSelModel
116	* layer selection model to keep synchronized with the
117	* {@link MapLayer}
118	*
119	* @param mapLayer
120	* {@link MapLayer} to keep synchronized with.
121	*/
122	public FeatureMapLayerSelectionSynchronizer(
123	StyledFeatureLayerSelectionModel layerSelModel,
124	StyledLayerInterface<?> styledLayer, MapLayer mapLayer,
125	JMapPane mapPane, MapPaneToolBar toolBar,
126	HashMap<Object, Object> defaultGTRenderingHints) {
127
128	super(layerSelModel);
129	this.styledLayer = styledLayer;
130
131	this.mapLayer = mapLayer;
132	this.mapPane = mapPane;
133	this.toolBar = toolBar;
134	if (defaultGTRenderingHints != null)
135	this.defaultGTRenderingHints = defaultGTRenderingHints;
136	else
137	this.defaultGTRenderingHints = new HashMap<Object, Object>();
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	if (newSelection.isEmpty()) {
190
191	// Check if the Style contains a SELECTION FTS
192
193	FeatureTypeStyle[] clone = originalStyle.featureTypeStyles()
194	.toArray(new FeatureTypeStyle[] {}).clone();
195
196	for (FeatureTypeStyle fts : clone) {
197	if (fts.getName() != null
198	&& fts.getName().equals(SELECTION_STYLING)) {
199	originalStyle.featureTypeStyles().remove(fts);
200
201	replaceRenderer();
202	// mapPane.refresh();
203
204	return;
205	}
206	}
207
208	} else {
209	LOGGER.debug("SELECTION .. change style");
210
211	// We take Style from the MapLayer that is displayed at the
212	// moment. We do not use the styledLayer.getStyle, because in
213	// the atlas, this always return the default style, but
214	// additional styles might be selected.
215	// Taking the style from the mapLayer indicated, that we have to
216	// remove any selection rules first.
217
218	FeatureTypeStyle selectionFTStyle = StylingUtil
219	.createSelectionStyle(styledLayer.getGeoObject());
220
221	selectionFTStyle.setName(SELECTION_STYLING);
222
223	/**
224	*
225	* Add a Filter to the selectionMapStyle, so that it is only
226	* used on objects that are selected. <br/>
227	*
228	* Note 1:<br/>
229	* It is NEVER allowed to GeoTools extend Filter () { .. } (and
230	* write tests into the evaluate block). Especially for the
231	* ShapeFileRenderer, we may only use a geotools Filter.<br/>
232	*
233	* Note 2:<br/>
234	* The FilterUtil.FILTER_FAC2.id(fids) wants a set of
235	* FeatureId-Objects!
236	*/
237
238	Set<FeatureId> fids = new HashSet<FeatureId>();
239	for (String fid : newSelection) {
240	fids.add(FilterUtil.FILTER_FAC2.featureId(fid));
241	}
242
243	LOGGER.debug("The selection filter:"+fids);
244
245	selectionFTStyle.rules().get(0).setFilter(
246	FilterUtil.FILTER_FAC2.id(fids));
247
248	// Maybe there has already been another selection
249	// FeatureTypeStyle... Let's replace it...
250	boolean foundAndReplaced = false;
251	for (FeatureTypeStyle fts : originalStyle.featureTypeStyles()) {
252	if (fts.getName() != null
253	&& fts.getName().equals(SELECTION_STYLING)) {
254	foundAndReplaced = true;
255	fts.rules().clear();
256	fts.rules().addAll(selectionFTStyle.rules());
257	break;
258	}
259	}
260	if (!foundAndReplaced) {
261	originalStyle.featureTypeStyles().add(selectionFTStyle);
262	}
263
264	// Refresh the map
265	// mapPane.refresh();
266
267	DuplicatingStyleVisitor dsv = new DuplicatingStyleVisitor();
268	dsv.visit(originalStyle);
269	Style newStyle = (Style) dsv.getCopy();
270
271	// Style newStyle = StylingUtil.STYLE_BUILDER.createStyle();
272	// newStyle.featureTypeStyles().addAll(originalStyle.featureTypeStyles());
273	mapLayer.setStyle(newStyle);
274
275	replaceRenderer();
276	}
277
278	} catch (Exception e) {
279	LOGGER.error("Error while trying to create a selection style", e);
280	}
281	}
282
283	private void replaceRenderer() {
284	//
285	// // Has to be done before we apply the new Renderer
286	// mapLayer.setStyle(style);
287
288	GTRenderer oldRenderer = mapPane.getRenderer();
289
290	/**
291	* Explicitly putting a new instance of LabelCacheDefault into the
292	* renderer instance, so JMapPane doesn't reuse the old one. This is
293	* very useful when changing the TextSymbolizer with AtlasStyler<br/>
294	* SK 9.7.09: It's not enought to user LabelCache.clear(). We can not
295	* reuse the old Renderer - better to create a new one!
296	*/
297	final GTRenderer newRenderer = GTUtil.createGTRenderer();
298
299	final HashMap<Object, Object> rendererHints = defaultGTRenderingHints;
300	rendererHints.put(StreamingRenderer.LABEL_CACHE_KEY,
301	new LabelCacheImpl());
302
303	newRenderer.setRendererHints(rendererHints);
304	mapPane.setRenderer(newRenderer);
305
306	if (oldRenderer != null) {
307
308	RenderingHints java2DHints = oldRenderer.getJava2DHints();
309	if (java2DHints != null) {
310	newRenderer.setJava2DHints(java2DHints);
311	}
312
313	oldRenderer.setContext(null);
314	oldRenderer = null;
315	}
316
317	mapPane.refresh();
318
319	}
320
321	/**
322	* Used to synchronize {@link FeatureSelectedEvent}s with the
323	* {@link StyledFeatureLayerSelectionModel}
324	*/
325	@Override
326	public void performMapPaneEvent(JMapPaneEvent e) {
327
328	// Ignore event if it is caused by us or the synchronizer is disabled.
329	if (!isEnabled() \|\| selectionChangeCausedByMe)
330	return;
331
332	if (!(e instanceof FeatureSelectedEvent)) {
333	// LOGGER.debug("Ignoring event " + e);
334	return;
335	}
336
337	/**
338	* Only listen to FeatureSelectedEvents if an appropriate tool is
339	* selected.
340	*/
341	final int selectedTool = toolBar.getSelectedTool();
342	if (selectedTool != MapPaneToolBar.TOOL_SELECTION_ADD
343	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_REMOVE
344	&& selectedTool != MapPaneToolBar.TOOL_SELECTION_SET) {
345	return;
346	}
347
348	// only listen to events directly coming from JMapPane
349	// selection (ignore selections from FilterDialog)
350	if (e.getSourceObject() != this.mapPane)
351	return;
352
353	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
354
355	/**
356	* Checking, that the FeatureSelectedEvent actually contains features
357	* from this layer
358	*/
359	final String sourceID = fse.getSourceLayer().getTitle();
360	final String syncForID = mapLayer.getTitle();
361	if (sourceID != null && syncForID != null
362	&& !sourceID.equals(syncForID)) {
363	LOGGER.debug("Ignoring a FeatureSelectedEvent from " + sourceID);
364	return;
365	}
366
367	// LOGGER.debug("do event " + fse);
368
369	// Avoid event circles in propertyChange(..)
370	selectionChangeCausedByMe = true;
371
372	final FeatureCollection<SimpleFeatureType, SimpleFeature> selectionResult = fse
373	.getSelectionResult();
374	Iterator<SimpleFeature> fi = selectionResult.iterator();
375	try {
376
377	// reset the selection of the DpLayerSelectionModel
378	// layerSelModel.setValueIsAdjusting(true);
379
380	if (selectedTool == MapPaneToolBar.TOOL_SELECTION_ADD) {
381	layerSelModel.setValueIsAdjusting(true);
382
383	for (int fIdx = 0; fi.hasNext(); fIdx++) {
384	SimpleFeature f = fi.next();
385	layerSelModel.addSelection(f.getID());
386	}
387	layerSelModel.setValueIsAdjusting(false);
388	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_SET) {
389	layerSelModel.setValueIsAdjusting(true);
390	layerSelModel.clearSelection();
391
392	for (int fIdx = 0; fi.hasNext(); fIdx++) {
393	SimpleFeature f = fi.next();
394	layerSelModel.addSelection(f.getID());
395	}
396
397	// LOGGER.debug("Setting selection to " + fi.());
398
399	layerSelModel.setValueIsAdjusting(false);
400	} else if (selectedTool == MapPaneToolBar.TOOL_SELECTION_REMOVE) {
401	layerSelModel.setValueIsAdjusting(true);
402	for (int fIdx = 0; fi.hasNext(); fIdx++) {
403	SimpleFeature f = fi.next();
404	layerSelModel.removeSelection(f.getID());
405	}
406	layerSelModel.setValueIsAdjusting(false);
407	}
408
409	} finally {
410	selectionResult.close(fi);
411	}
412
413	// Show selected features in the map, which is not automatically done by
414	// the origin: FeatureSelectedEvent
415	changeLayerStyle(layerSelModel.getSelection());
416
417	// Danger of event circles in propertyChange(..) banned
418	selectionChangeCausedByMe = false;
419	}
420
421	}
Name	Value
svn:eol-style	native
svn:keywords	Id
svn:mime-type	text/plain