geotools/selection/FeatureMapLayerSelectionSynchronizer.java

/** 
 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.util.Collection;
import java.util.Vector;

import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.text.Utilities;

import org.geotools.feature.Feature;
import org.geotools.map.MapLayer;
import org.geotools.styling.Style;

import schmitzm.geotools.gui.FeatureCollectionTableModel;
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.StyledFeatureCollectionInterface;
import skrueger.geotools.StyledMapInterface;
import skrueger.geotools.selection.StyledFeatureLayerSelectionModel;
import skrueger.geotools.selection.StyledLayerSelectionEvent;
import skrueger.geotools.selection.StyledLayerSelectionModel;

/**
 * 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<Feature> implements
                JMapPaneListener {
        /**
         * Holds the {@link MapLayer} to keep synchronized with the layer selection
         * model.
         */
        protected final MapLayer mapLayer;
        protected final StyledMapInterface<?> styledMapLayer;
        protected final JMapPane mapPane;

        /**
         * 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,
                        StyledMapInterface<?> styledMapLayer, MapLayer mapLayer,
                        JMapPane mapPane) {

                super(layerSelModel);
                this.styledMapLayer = styledMapLayer;

                this.mapLayer = mapLayer;
                this.mapPane = mapPane;
        }

        /**
         * 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 (!(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<Feature> 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;
        }

        private void changeLayerStyle(Vector<Feature> newSelection) {
                Style selectionMapStyle = null;
                try {
                        if (newSelection.isEmpty()) {

                                selectionMapStyle = styledMapLayer.getStyle();
                                LOGGER.debug("NO SELECTION .. reset original style");
                                
                        } else {
                                LOGGER.debug("SELECTION .. change style");
                                selectionMapStyle = StylingUtil
                                                .createDefaultStyle(styledMapLayer.getGeoObject());
                                
                                selectionMapStyle = styledMapLayer.getStyle();
                                
                        }

                        mapLayer.setStyle(selectionMapStyle);
                        mapPane.refresh();
                } catch (Exception e) {
                        LOGGER.error("Error while trying to create a selection style", e);
                }
        }

        //
        // /**
        // * Called when the table selection is changed by the user. When calling
        // this
        // * method changes the selection of the {@link StyledLayerSelectionModel}.
        // *
        // * @param evt
        // * an event
        // */
        // @Override
        // public void valueChanged(ListSelectionEvent evt) {
        //              
        // }

        @Override
        public void performMapPaneEvent(JMapPaneEvent e) {
                if (!(e instanceof FeatureSelectedEvent))
                        return;

                FeatureSelectedEvent fse = (FeatureSelectedEvent) e;

                // ignore event if it is caused by the DpLayerVectorSelectionModel
                if (selectionChangeCausedByMe)
                        return;

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

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

                layerSelModel.addSelection((Collection<Feature>) fse
                                .getSelectionResult());

                // for (int i = evt.getFirstIndex(); i <= evt.getLastIndex(); i++) {
                // Feature changedFeature = featureTableModel.getFeature(featureTable
                // .convertRowIndexToModel(i));
                // if (featureTable.isRowSelected(i))
                // layerSelModel.addSelection(changedFeature);
                // else
                // layerSelModel.removeSelection(changedFeature);
                // }
                // layerSelModel.setValueIsAdjusting(false);

                // Show selected feature in the map, which is not automatically done by
                // the FeatureSelectedEvent
                changeLayerStyle(layerSelModel.getSelection());
                
                // Danger of event circles in propertyChange(..) banned
                selectionChangeCausedByMe = false;
        }
}
1	/**
2	Copyright 2008 Stefan Alfons Krüger
3
4	atlas-framework - This file is part of the Atlas Framework
5
6	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.
7	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.
8	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
9
10	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.
11	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.
12	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.
13	**/
14	package skrueger.geotools.selection;
15
16	import java.beans.PropertyChangeEvent;
17	import java.beans.PropertyChangeListener;
18	import java.util.Collection;
19	import java.util.Vector;
20
21	import javax.swing.JTable;
22	import javax.swing.ListSelectionModel;
23	import javax.swing.event.ListSelectionEvent;
24	import javax.swing.event.ListSelectionListener;
25	import javax.swing.text.Utilities;
26
27	import org.geotools.feature.Feature;
28	import org.geotools.map.MapLayer;
29	import org.geotools.styling.Style;
30
31	import schmitzm.geotools.gui.FeatureCollectionTableModel;
32	import schmitzm.geotools.gui.JMapPane;
33	import schmitzm.geotools.map.event.FeatureSelectedEvent;
34	import schmitzm.geotools.map.event.JMapPaneEvent;
35	import schmitzm.geotools.map.event.JMapPaneListener;
36	import schmitzm.geotools.styling.StylingUtil;
37	import skrueger.geotools.StyledFeatureCollectionInterface;
38	import skrueger.geotools.StyledMapInterface;
39	import skrueger.geotools.selection.StyledFeatureLayerSelectionModel;
40	import skrueger.geotools.selection.StyledLayerSelectionEvent;
41	import skrueger.geotools.selection.StyledLayerSelectionModel;
42
43	/**
44	* This class keeps the selection of a (feature) {@link JTable} synchronized
45	* with the {@link StyledLayerSelectionModel} of a layer. This is done by
46	* implementing:
47	* <ul>
48	* <li>a {@link PropertyChangeListener} which listens to the
49	* {@link StyledLayerSelectionModel} and accordingly changes the {@link JTable}
50	* selection</li>
51	* <li>a {@link ListSelectionListener} which listens to the {@link JTable} and
52	* accordingly changes the {@link StyledLayerSelectionModel} selection</li>
53	* </ul>
54	* After creating, the instance of this synchronizer must be added as listener
55	* to both, the {@link StyledLayerSelectionModel} and the table's
56	* {@link ListSelectionModel}.
57	*
58	* @author <a href="mailto:[email protected]">Martin Schmitz</a>
59	* (University of Bonn/Germany)
60	*/
61	public class FeatureMapLayerSelectionSynchronizer extends
62	StyledLayerSelectionModelSynchronizer<Feature> implements
63	JMapPaneListener {
64	/**
65	* Holds the {@link MapLayer} to keep synchronized with the layer selection
66	* model.
67	*/
68	protected final MapLayer mapLayer;
69	protected final StyledMapInterface<?> styledMapLayer;
70	protected final JMapPane mapPane;
71
72	/**
73	* Creates a new synchronizer
74	*
75	* @param layerSelModel
76	* layer selection model to keep synchronized with the
77	* {@link MapLayer}
78	*
79	* @param mapLayer
80	* {@link MapLayer} to keep synchronized with.
81	*/
82	public FeatureMapLayerSelectionSynchronizer(
83	StyledFeatureLayerSelectionModel layerSelModel,
84	StyledMapInterface<?> styledMapLayer, MapLayer mapLayer,
85	JMapPane mapPane) {
86
87	super(layerSelModel);
88	this.styledMapLayer = styledMapLayer;
89
90	this.mapLayer = mapLayer;
91	this.mapPane = mapPane;
92	}
93
94	/**
95	* Called by {@link StyledLayerSelectionModel} when a the selection on other
96	* selection components (map, chart, ...) has changed. When calling this
97	*
98	* method changes the {@link MapLayer} selection according to the
99	* {@link StyledLayerSelectionModel} selection.
100	*
101	* @param evt
102	* an event
103	*/
104	@Override
105	public void propertyChange(PropertyChangeEvent evt) {
106	if (!(evt instanceof StyledLayerSelectionEvent))
107	return;
108	StyledLayerSelectionEvent selEvt = (StyledLayerSelectionEvent) evt;
109	// Only react on own layer and ignore events invoked by
110	// this component itself
111	if (selEvt.getEmitter() != layerSelModel \|\| selectionChangeCausedByMe)
112	return;
113	// Apply new selection on table (except this event is one of
114	// some more events)
115	Vector<Feature> newSelection = layerSelModel.getSelection();
116	if (newSelection == null)
117	return;
118
119	// Avoid event circles in valueChanged(..)
120	selectionChangeCausedByMe = true;
121
122	changeLayerStyle(newSelection);
123
124	// Danger of event circles in valueChanged(..) banned
125	selectionChangeCausedByMe = false;
126	}
127
128	private void changeLayerStyle(Vector<Feature> newSelection) {
129	Style selectionMapStyle = null;
130	try {
131	if (newSelection.isEmpty()) {
132
133	selectionMapStyle = styledMapLayer.getStyle();
134	LOGGER.debug("NO SELECTION .. reset original style");
135
136	} else {
137	LOGGER.debug("SELECTION .. change style");
138	selectionMapStyle = StylingUtil
139	.createDefaultStyle(styledMapLayer.getGeoObject());
140
141	selectionMapStyle = styledMapLayer.getStyle();
142
143	}
144
145	mapLayer.setStyle(selectionMapStyle);
146	mapPane.refresh();
147	} catch (Exception e) {
148	LOGGER.error("Error while trying to create a selection style", e);
149	}
150	}
151
152	//
153	// /**
154	// * Called when the table selection is changed by the user. When calling
155	// this
156	// * method changes the selection of the {@link StyledLayerSelectionModel}.
157	// *
158	// * @param evt
159	// * an event
160	// */
161	// @Override
162	// public void valueChanged(ListSelectionEvent evt) {
163	//
164	// }
165
166	@Override
167	public void performMapPaneEvent(JMapPaneEvent e) {
168	if (!(e instanceof FeatureSelectedEvent))
169	return;
170
171	FeatureSelectedEvent fse = (FeatureSelectedEvent) e;
172
173	// ignore event if it is caused by the DpLayerVectorSelectionModel
174	if (selectionChangeCausedByMe)
175	return;
176
177	// Avoid event circles in propertyChange(..)
178	selectionChangeCausedByMe = true;
179
180	// reset the selection of the DpLayerSelectionModel
181	// layerSelModel.setValueIsAdjusting(true);
182
183	layerSelModel.addSelection((Collection<Feature>) fse
184	.getSelectionResult());
185
186	// for (int i = evt.getFirstIndex(); i <= evt.getLastIndex(); i++) {
187	// Feature changedFeature = featureTableModel.getFeature(featureTable
188	// .convertRowIndexToModel(i));
189	// if (featureTable.isRowSelected(i))
190	// layerSelModel.addSelection(changedFeature);
191	// else
192	// layerSelModel.removeSelection(changedFeature);
193	// }
194	// layerSelModel.setValueIsAdjusting(false);
195
196	// Show selected feature in the map, which is not automatically done by
197	// the FeatureSelectedEvent
198	changeLayerStyle(layerSelModel.getSelection());
199
200	// Danger of event circles in propertyChange(..) banned
201	selectionChangeCausedByMe = false;
202	}
203	}
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