Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * 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 General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.raster.tools.app.basic.tool.roi;

import java.awt.Color;

import java.util.ArrayList;

import java.util.Collections;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import org.gvsig.fmap.dal.coverage.grid.ROI;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.EditableFeature;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureReference;

import org.gvsig.fmap.dal.feature.FeatureSet;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.mapcontext.layers.vectorial.GraphicLayer;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.tools.dispose.DisposableIterator;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Manages a table of ROI with its related list of Features.

 * 

 * @author <a href="mailto:cordinyana@gvsig.org">C?sar Ordi?ana</a>

 */

public class ROIFeatureManager {

        protected static final Logger logger = LoggerFactory.getLogger(ROIFeatureManager.class);

        private Map<String, List<FeatureReference>> roiNameToFeatureList = Collections

                        .synchronizedMap(new HashMap<String, List<FeatureReference>>());

        private final String layerId;

        public ROIFeatureManager(String layerId) {

                this.layerId = layerId;

        }

        /**

         * Returns a read-only {@link Map} of ROI names to {@link FeatureReference}

         * {@link List} objects.

         * 

         * @return the roiNameToFeatureList the table of {@link FeatureReference}

         *         objects per {@link ROI}.

         */

        public Map<String, List<FeatureReference>> getRoiNameToFeatureList() {

                return Collections.unmodifiableMap(roiNameToFeatureList);

        }

        public EditableFeature addROIFeature(ROI roi, GraphicLayer graphicLayer,

                        Geometry geometry, ISymbol symbol) throws DataException {

                int symbolPos = graphicLayer.addSymbol(symbol);

                EditableFeature feature = createEditableFeature(

                                graphicLayer.getFeatureStore(), 

                                roi, 

                                geometry, 

                                symbolPos);

                addROIFeature(roi, feature.getReference());

                return feature;

        }

        public void addROIFeature(ROI roi, FeatureReference feature) {

                List<FeatureReference> featureList = roiNameToFeatureList.get(roi.getName());

                if (featureList == null) {

                        featureList = new ArrayList<FeatureReference>();

                        roiNameToFeatureList.put(roi.getName(), featureList);

                }

                featureList.add(feature);

        }

        public boolean clear(GraphicLayer layer) {

                return clear(layer, false);

        }

        public void clearFeaturesFromGraphicLayer(GraphicLayer layer) {

                clear(layer, true);

        }

        private boolean clear(GraphicLayer layer, boolean onlyRemoveFromLayer) {

                boolean anythingCleared = false;

                //Evita un ConcurrentModificationException ya que no se puede leer y borrar a la vez de roiNameToFeatureList

                List<String> roiNameList = new ArrayList<String>();

                for (Iterator<String> iterator = roiNameToFeatureList.keySet().iterator(); 

                        iterator.hasNext();) {

                        String roiName = iterator.next();

                        roiNameList.add(roiName);

                }

                for (int i = 0; i < roiNameList.size(); i++) {

                        String roiName = roiNameList.get(i);

                        anythingCleared = anythingCleared || removeROI(roiName, layer, onlyRemoveFromLayer);

                }

                return anythingCleared;

        }

        public boolean removeROI(String roiName, GraphicLayer layer) {

                return removeROI(roiName, layer, false);

        }

        private synchronized boolean removeROI(String roiName, GraphicLayer layer,

                        boolean onlyRemoveFromLayer) {

                //String roiId = getROIId(roiName);

                //layer.removeGraphics(roiId);

                removeGraphics(layer, getROIId(roiName));

                synchronized (roiNameToFeatureList) {

                        return onlyRemoveFromLayer ? true : roiNameToFeatureList.remove(roiName) != null;

                }

        }

        public void changeColor(GraphicLayer lyr, String roiName, Color color) {

                DisposableIterator iterator = null;

                FeatureSet featureSet = null;

                FeatureStore store = lyr.getFeatureStore();

                try{

                        store.beginComplexNotification();

                        if (!store.isEditing()){

                                store.edit();

                        }

                        featureSet = store.getFeatureSet();

                        for (iterator = featureSet.fastIterator(); iterator.hasNext();) {

                                Feature feature = (Feature) iterator.next();

                                Object obj = feature.get(GraphicLayer.FEATURE_ATTR_GROUPID);

                                if (obj instanceof String && ((String)obj).equals(getROIId(roiName))) {

                                        int symbolPos = feature.getInt(GraphicLayer.FEATURE_ATTR_IDSYMBOL);

                                        ISymbol symbol = lyr.getSymbol(symbolPos);

                                        symbol.setColor(color);

                                }

                        }

                        store.finishEditing();

                        store.endComplexNotification();

                } catch (DataException e) {

                        logger.error("Error clearing all the geometry of the graphic layer", e);

                } finally {

                        if (featureSet != null) {

                                featureSet.dispose();

                        }

                        if (iterator != null) {

                                iterator.dispose();

                        }

                }

        }

        public void removeGraphics(GraphicLayer lyr, String prefix) {

                DisposableIterator iterator = null;

                FeatureSet featureSet = null;

                FeatureStore store = lyr.getFeatureStore();

                try{

                        List<Feature> list = new ArrayList<Feature>();

                        store.beginComplexNotification();

                        if (!store.isEditing()){

                                store.edit();

                        }

                        featureSet = store.getFeatureSet();

                        for (iterator = featureSet.iterator(); iterator.hasNext();) {

                                Feature feature = (Feature) iterator.next();

                                Object obj = feature.get(GraphicLayer.FEATURE_ATTR_GROUPID);

                                if (obj instanceof String && ((String)obj).startsWith(prefix)) {

                                        list.add(feature);

                                        //featureSet.delete(feature); //ConcurrentModificationException!!! Lo a?ado a una lista para eliminarlo posteriormente

                                }

                        }

                        for (int i = 0; i < list.size(); i++) {

                                store.delete(list.get(i));

                        }

                        store.finishEditing();

                        store.endComplexNotification();

                } catch (DataException e) {

                        logger.error("Error clearing all the geometry of the graphic layer", e);

                } finally {

                        if (featureSet != null) {

                                featureSet.dispose();

                        }

                        if (iterator != null) {

                                iterator.dispose();

                        }

                }

        }

        public String getROIId(String roiName) {

                return getROIPrefix().concat(roiName);

        }

        private String getROIPrefix() {

                return layerId.concat("-");

        }

        public void changeROIName(String oldName, String newName, GraphicLayer layer)

        throws DataException {

                List<FeatureReference> featureList = roiNameToFeatureList.remove(oldName);

                if (featureList != null) {

                        roiNameToFeatureList.put(newName, featureList);

                        String newroiid = getROIId(newName);

                        FeatureStore store = layer.getFeatureStore();

                        store.edit();

                        for (int i = 0; i < featureList.size(); i++) {

                                FeatureReference ref = featureList.get(i);

                                EditableFeature editable = ref.getFeature().getEditable();

                                editable.set(GraphicLayer.FEATURE_ATTR_GROUPID, newroiid);

                                store.update(editable);

                        }

                        store.finishEditing();

                }

        }

        public List<FeatureReference> getROIFeatures(String roiName) {

                return Collections.unmodifiableList(roiNameToFeatureList.get(roiName));

        }

        private EditableFeature createEditableFeature(FeatureStore store, ROI roi,

                        Geometry geometry, int symbolPos) throws DataException {

                EditableFeature feature = store.createNewFeature();

                feature.set(GraphicLayer.FEATURE_ATTR_GROUPID, getROIId(roi.getName()));

                feature.setGeometry(GraphicLayer.FEATURE_ATTR_GEOMETRY, geometry);

                feature.setInt(GraphicLayer.FEATURE_ATTR_IDSYMBOL, symbolPos);

                return feature;

        }

}