Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

*

* $Id: DefaultLabelingMethod.java 10815 2007-03-20 16:16:20Z jaume $

* $Log$

* Revision 1.1  2007-03-20 16:16:20  jaume

* refactored to use ISymbol instead of FSymbol

*

* Revision 1.2  2007/03/09 08:33:43  jaume

* *** empty log message ***

*

* Revision 1.1.2.2  2007/02/01 11:42:47  jaume

* *** empty log message ***

*

* Revision 1.1.2.1  2007/01/30 18:10:45  jaume

* start commiting labeling stuff

*

*

*/

package org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling;

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

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

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

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

import org.gvsig.fmap.mapcontext.ViewPort;

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

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelClass;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelingMethod;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.gvsig.tools.util.Callable;

public class DefaultLabelingMethod implements ILabelingMethod {

        private static final String FIELD_DEFAULT_LABEL = "defaultLabel";

        private static final String DEFAULT_LABELING_METHOD_PERSISTENCE_DEFINITION_NAME =

                        "DefaultLabelingMethod";

        private ILabelClass defaultLabel;

        /**

         * Empty constructor for persistence.

         */

        public DefaultLabelingMethod() {

                // Nothing to do

        }

        public DefaultLabelingMethod(LabelClass defaultLabel) {

                this();

                this.defaultLabel = defaultLabel;

        }

        public void addLabelClass(ILabelClass lbl) {

                defaultLabel = lbl;

        }

        public void deleteLabelClass(ILabelClass lbl) {

                // does nothing

        }

        public String getClassName() {

                return getClass().getName();

        }

        public boolean allowsMultipleClass() {

                return false;

        }

        public void renameLabelClass(ILabelClass lbl, String newName) {

                // does nothing

        }

        public FeatureSet getFeatureIteratorByLabelClass(FLyrVect layer, ILabelClass lc, ViewPort viewPort, String[] usedFields)

        throws DataException {

                FeatureStore featureStore=layer.getFeatureStore();

                FeatureQuery featureQuery=featureStore.createFeatureQuery();

                featureQuery.setAttributeNames(usedFields);

                return (FeatureSet)featureStore.getFeatureSet(featureQuery);

//                layer.getSource().getFeatureIterator(

//                                        viewPort.getAdjustedExtent(), usedFields,

//                                        layer.getProjection(), true);

        }

        public boolean definesPriorities() {

                return false;

        }

        public void setDefinesPriorities(boolean flag) {

                /* nothing, since only one label class is suported */

        }

        public ILabelClass getLabelClassByName(String labelName) {

                return defaultLabel;

        }

        public void clearAllClasses() {

                defaultLabel = null;

        }

        public ILabelClass[] getLabelClasses() {

                return defaultLabel == null ? new ILabelClass[0] : new ILabelClass[] { defaultLabel };

        }

        public ILabelingMethod cloneMethod() {

//XMLENTITY-UPDATED        

//                if (defaultLabel !=null)

//                        try {

//                                return new DefaultLabelingMethod(LabelingFactory.createLabelClassFromXML(defaultLabel.getXMLEntity()));

//                        } catch (XMLException e) {

//                                // TODO Auto-generated catch block

//                                e.printStackTrace();

//                        }

                return new DefaultLabelingMethod();

        }

        /* (non-Javadoc)

         * @see org.gvsig.tools.persistence.Persistent#loadFromState(org.gvsig.tools.persistence.PersistentState)

         */

        public void loadFromState(PersistentState state)

                        throws PersistenceException {

                defaultLabel = (ILabelClass) state.get(FIELD_DEFAULT_LABEL);

        }

        /* (non-Javadoc)

         * @see org.gvsig.tools.persistence.Persistent#saveToState(org.gvsig.tools.persistence.PersistentState)

         */

        public void saveToState(PersistentState state) throws PersistenceException {

                state.set(FIELD_DEFAULT_LABEL, defaultLabel);

        }

        public static class RegisterPersistence implements Callable {

                public Object call() throws Exception {

                        PersistenceManager manager = ToolsLocator.getPersistenceManager();

                        if( manager.getDefinition(DEFAULT_LABELING_METHOD_PERSISTENCE_DEFINITION_NAME)==null ) {

                                DynStruct definition = manager.addDefinition(

                                                DefaultLabelingMethod.class,

                                                DEFAULT_LABELING_METHOD_PERSISTENCE_DEFINITION_NAME,

                                                DEFAULT_LABELING_METHOD_PERSISTENCE_DEFINITION_NAME+" Persistence definition",

                                                null, 

                                                null

                                );

                                definition.addDynFieldObject(FIELD_DEFAULT_LABEL).setMandatory(false).setClassOfValue(ILabelClass.class);

                        }

                        return Boolean.TRUE;

                }

        }

}