Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.mapcontext.layers.order.impl;

import java.util.Map;

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.Geometry.TYPES;

import org.gvsig.fmap.geom.type.GeometryType;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.FLayers;

import org.gvsig.fmap.mapcontext.layers.order.LayerOrderManager;

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

import org.gvsig.i18n.Messages;

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.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class RasterPolLinePointOrderManager implements LayerOrderManager {

        public static final String RASTER_POLYGON_LINE_POINT_LAYER_ORDER_MANAGER_PERSISTENCE_NAME =

                        "RASTER_POLYGON_LINE_POINT_LAYER_ORDER_MANAGER_PERSISTENCE_NAME";

        private static Logger logger =

                LoggerFactory.getLogger(RasterPolLinePointOrderManager.class);

        public RasterPolLinePointOrderManager() {

        }

        public int getPosition(FLayers target, FLayer newLayer) {

                int new_weight = 3;

                new_weight = getLayerWeight(newLayer);

                int len = target.getLayersCount();

                int item_w = 0;

                // from top to bottom,

                // look for a layer at

                // least as "heavy" as this one

                for (int i=(len-1); i>=0; i--) {

                        item_w = getLayerWeight(target.getLayer(i));

                        if (item_w >= new_weight) {

                                return (i+1);

                        }

                }

                // layer "falls" to bottom

                return 0;

        }

        public String getDescription() {

                return Messages.getText("_Raster_at_bottom_then_polygons_lines_points");

        }

        public String getName() {

                return Messages.getText("_Raster_Polygon_Line_Point_order_manager");

        }

        public String getCode() {

                return this.getClass().getName();

        }

        /**

         * 

         * @param lyr

         * @return weight: point=0, line=1, polygon=2, other=3, raster=4

         */

        private int getLayerWeight(FLayer lyr) {

                if (lyr.getClass().getName().toLowerCase().indexOf("raster") != -1) {

                        return 4;

                } else {

                        if (lyr instanceof FLyrVect) {

                                FLyrVect lyrv = (FLyrVect) lyr;

                                int type2d = Geometry.TYPES.SURFACE;

                                try {

                                        type2d = simplifyType(lyrv.getGeometryType());

                                } catch (ReadException e) {

                                        logger.error("While getting geo type.", e);

                                }

                                switch (type2d) {

                                case TYPES.SURFACE:

                                        return 2;

                                case TYPES.CURVE:

                                        return 1;

                                case TYPES.POINT:

                                        return 0;

                                default:

                                        // should not reach this

                                        return 3;

                                }

                        } else {

                                // other:

                                return 3;

                        }

                }

        }

        /**

         * 

         */

        private int simplifyType(GeometryType gt) {

        if( gt.isTypeOf(TYPES.POINT) || gt.isTypeOf(TYPES.MULTIPOINT) ) {

            return TYPES.POINT;

        } else if( gt.isTypeOf(TYPES.CURVE) || gt.isTypeOf(TYPES.MULTICURVE) ) {

            return TYPES.CURVE;

        } else if( gt.isTypeOf(TYPES.SURFACE) || gt.isTypeOf(TYPES.MULTISURFACE) ) {

            return TYPES.SURFACE;

        }

        return TYPES.SURFACE;

        }

        public void loadFromState(PersistentState state) throws PersistenceException {

        }

        public void saveToState(PersistentState state) throws PersistenceException {

                state.set("name", this.getName());

        }

        public static void registerPersistent() {

                PersistenceManager manager = ToolsLocator.getPersistenceManager();

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

                        DynStruct def = manager.addDefinition(

                                        RasterPolLinePointOrderManager.class,

                                        RASTER_POLYGON_LINE_POINT_LAYER_ORDER_MANAGER_PERSISTENCE_NAME,

                                        RASTER_POLYGON_LINE_POINT_LAYER_ORDER_MANAGER_PERSISTENCE_NAME +" Persistence definition",

                                        null, 

                                        null);

                        def.addDynFieldString("name").setMandatory(true);

                }                        

        }

        public Object clone() throws CloneNotSupportedException {

                return new RasterPolLinePointOrderManager();

        }

}