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.impl.grid.filter.correction;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.fmap.dal.coverage.datastruct.Params;

import org.gvsig.fmap.dal.coverage.exception.FilterTypeException;

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

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

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

import org.gvsig.raster.impl.grid.filter.RasterFilterListManagerImpl;

import org.gvsig.raster.impl.store.ParamImpl;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.extensionpoint.ExtensionPoint;

import org.gvsig.tools.extensionpoint.ExtensionPointManager;

/**

 * Gestor de la pila de filtros para el filtro de mediana.

 *

 * @author Diego Guerrero Sevilla  <diego.guerrero@uclm.es>

 */

public class MedianListManager implements RasterFilterListManager {

        protected RasterFilterList                        filterList = null;

        /**

         * Default constructor. Sets the filter list.

         * @param filterList

         */

        public MedianListManager(RasterFilterList filterList) {

                this.filterList = filterList;

        }

        /**

         * Constructor. Asigna la lista de filtros y el manager.

         * @param filterListManager

         */

        public MedianListManager(RasterFilterListManagerImpl filterListManager) {

                this.filterList = filterListManager.getFilterList();

        }

        /**

         * Registra MedianListManager en los puntos de extension de RasterFilter

         */

        public static void register() {

                ExtensionPointManager extensionPoints = ToolsLocator.getExtensionPointManager();

                ExtensionPoint point = extensionPoints.get("RasterFilter");

                point.append("Median", "", MedianListManager.class);

        }

        public boolean isDataTypeSupported(int dataType) {

                return true;

        }

        public Class<?> getFilterClassByID(String id) {

                if(id.compareTo("median") == 0)

                        return MedianFilter.class;

                return null;

        }

        /**

         * A?ade un filtro de mediana a la pila de filtros.

         * @param ladoVentana

         * @throws FilterTypeException

         */

        public void addMedianFilter(int ladoVentana) throws FilterTypeException {

                RasterFilter filter = new MedianByteFilter();

                //Cuando el filtro esta creado, tomamos los valores y lo a?adimos a la pila

                if (filter != null) {

                        filter.addParam("ladoVentana", new Integer(ladoVentana));

                        filterList.add(filter);

                }

        }

        public List<String> getStringsFromFilterList(List<String> filterList, RasterFilter rf) {

                if (rf instanceof MedianFilter) {

                        filterList.add("filter.median.active=true");

                        MedianFilter medianFilter = (MedianFilter) rf;

                        filterList.add("filter.median.ladoVentana=" + medianFilter.getSideWindow());

                }

                return filterList;

        }

        public int createFilterListFromStrings(List<String> filters, String fil, int filteri) throws FilterTypeException {

                if ((fil.startsWith("filter.median.active")) && (RasterFilterListManagerImpl.getValue(fil).equals("true"))) {

                        int ladoVentana = 0;

                        filters.remove(0);

                        for (int prop = 0; prop < filters.size(); prop++) {

                                String elem = (String) filters.get(prop);

                                if (elem.startsWith("filter.median.ladoVentana")) {

                                        ladoVentana = Integer.parseInt(RasterFilterListManagerImpl.getValue(elem));

                                        filters.remove(prop);

                                        prop--;

                                }

                        }

                        addMedianFilter(ladoVentana);

                }

                return filteri;

        }

        public List<Class<?>> getRasterFilterList() {

                List<Class<?>> filters = new ArrayList<Class<?>>();

                filters.add(MedianFilter.class);

                return filters;

        }

        public void addFilter(Class<?> classFilter, Params params) throws FilterTypeException {

                if (MedianFilter.class.isAssignableFrom(classFilter)) {

                        int ladoVentana = 0;

                        for (int i = 0; i < params.getNumParams(); i++) {

                                if (((ParamImpl)params.getParam(i)).getId().equals("ladoVentana") &&

                                                ((ParamImpl)params.getParam(i)).getDefaultValue() instanceof Integer)

                                        ladoVentana = ((Integer) ((ParamImpl)params.getParam(i)).getDefaultValue()).intValue();

                        }

                        addMedianFilter(ladoVentana);

                }

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.dal.coverage.grid.RasterFilterListManager#addFilter(org.gvsig.fmap.dal.coverage.datastruct.Params)

         */

        public void addFilter(Params params) throws FilterTypeException {

                addFilter(MedianFilter.class, params);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.dal.coverage.grid.RasterFilterListManager#createFilter(org.gvsig.fmap.dal.coverage.datastruct.Params)

         */

        public RasterFilter createFilter(Params params) {

                if(        params.getParamById("ladoVentana") != null) {

                        int ladoVentana = ((Integer) params.getParamById("ladoVentana").getDefaultValue()).intValue();

                        RasterFilter filter = new MedianByteFilter();

                        filter.addParam("ladoVentana", new Integer(ladoVentana));

                        return filter;

                }

                return null;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.dal.coverage.grid.RasterFilterListManager#getFilterList()

         */

        public RasterFilterList getFilterList() {

                return filterList;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.fmap.dal.coverage.grid.RasterFilterListManager#setFilterList(org.gvsig.fmap.dal.coverage.grid.RasterFilterList)

         */

        public void setFilterList(RasterFilterList filterList) {

                this.filterList = filterList;

        }

}