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 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()) {

                                LOGGER.debug("NO SELECTION");
                                selectionMapStyle = styledMapLayer.getStyle();
                        } else {
                                LOGGER.debug("SELECTION EXISTEnT");
                                selectionMapStyle = StylingUtil
                                                .createDefaultStyle(styledMapLayer.getGeoObject());
                        }

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