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: OnSelectionLabeled.java 10815 2007-03-20 16:16:20Z jaume $

* $Log$

* Revision 1.3  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.labeling.label;

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

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

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.labeling.lang.LabelClassUtils;

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;

/**

 *

 * OnSelectionLabeled.java

 *

 *

 * 

 *

 */

public class OnSelectionLabeled implements ILabelingMethod {

        private static final String FIELD_DEFAULT_LABEL = "defaultLabel";

        private static final String ONSELECTION_LABELING_METHOD_PERSISTENCE_NAME =

                        "ONSELECTION_LABELING_METHOD_PERSISTENCE_NAME";

        private ILabelClass defaultLabel;

        /**

         * Empty constructor for persistence.

         */

        public OnSelectionLabeled() {

                // Nothing to do

        }

        public OnSelectionLabeled(ILabelClass defaultLabel) {

                this.defaultLabel = defaultLabel;

        }

        public void addLabelClass(ILabelClass lbl) {

                defaultLabel = lbl;

        }

        public void deleteLabelClass(ILabelClass lbl) {

                // does nothing

        }

        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 fsto = layer.getFeatureStore();

                FeatureSet fset = (FeatureSelection) fsto.getSelection();

                return fset;

        }

        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() {

                ILabelClass lbl = (ILabelClass) LabelClassUtils.clone(this.defaultLabel);

                OnSelectionLabeled resp = new OnSelectionLabeled(lbl);

                return resp;

        }

        /* (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 void registerPersistent() {

                PersistenceManager manager = ToolsLocator.getPersistenceManager();

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

                        DynStruct definition = manager.addDefinition(

                                        OnSelectionLabeled.class,

                                        ONSELECTION_LABELING_METHOD_PERSISTENCE_NAME,

                                        ONSELECTION_LABELING_METHOD_PERSISTENCE_NAME+

                                        " Persistence definition",

                                        null, 

                                        null

                        );

                        definition.addDynFieldObject(FIELD_DEFAULT_LABEL).setMandatory(true)

                        .setClassOfValue(ILabelClass.class);

                }

        }

        // =================================================

        // =================================================

}