Application: gvSIG desktop » gvSIG raster

package org.gvsig.raster.cache.buffer.impl.stripecache.horizontal;

import java.util.ArrayList;

import org.gvsig.raster.cache.buffer.exception.WrongParameterException;

import org.gvsig.raster.cache.buffer.impl.RasterBuffer;

import org.gvsig.raster.cache.buffer.impl.stripecache.CacheBand;

import org.gvsig.raster.cache.buffer.impl.stripecache.LRUAlgorithm;

/**

 * List of bands 

 * 

 * 21/10/2008

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class CacheBandListHorz extends ArrayList<CacheBand> {

        private static final long serialVersionUID = 1L;

        /*

         * (non-Javadoc)

         * @see java.util.ArrayList#remove(int)

         */

        public CacheBand remove(int pos) {

                CacheBand removedElement = super.remove(pos);

                for (int i = pos; i < size(); i++) {

                        CacheBand b = get(i);

                        b.setBandNumber(b.getBandNumber() - 1);

                }

                return removedElement;

        }

        /**

         * Add a new band in the selected position 

         * @param pos Position to add a band

         * @param cache Cache

         * @param lru  LRUAlgorithm

         * @param dataType 

         * @return Band added

         */

        public CacheBand add(int pos, CacheHorzImpl cache, LRUAlgorithm lru, int dataType) {

                for (int i = pos; i < size(); i++) 

                        get(i).setBandNumber(get(i).getBandNumber() + 1);

                switch(dataType) {

            case RasterBuffer.TYPE_BYTE: ByteBand bb = new ByteBand(cache, lru, pos);

                                                                    add(pos, bb);

                                                                    return bb;

            case RasterBuffer.TYPE_SHORT: ByteBand sb = new ByteBand(cache, lru, pos);

                                                                    add(pos, sb);

                                                                    return sb;

            case RasterBuffer.TYPE_INT: ByteBand ib = new ByteBand(cache, lru, pos);

                                                                    add(pos, ib);

                                                                    return ib;

            case RasterBuffer.TYPE_FLOAT: ByteBand fb = new ByteBand(cache, lru, pos); 

                                                                        add(pos, fb);

                                                                    return fb;

            case RasterBuffer.TYPE_DOUBLE: ByteBand db = new ByteBand(cache, lru, pos);

                                                                        add(pos, db);

                                                                    return db;

            }

                return null;

        }

        /**

         * Swap bands according to positions selected in bandPosition parameter. 

         * 

         * @param  bandPosition

         *         New order for the bands in the array. Each position in the array represent the old band

         *         .The number that it contains represent the new position of that band. For instance, an

         *         array with values {1, 0, 2, 3} means that it has four bands and the band number one is swaped

         *         with the band number zero. The bands two and three don't change its position in this example.                           

         * @throws WrongParameterException

         */

        public void swapBands(int[] bandPosition) throws WrongParameterException {

                CacheBandListHorz cbl = (CacheBandListHorz)this.clone();

                for (int i = 0; i < bandPosition.length; i++) {

                        CacheBand cb = cbl.get(bandPosition[i]);

                        cb.setBandNumber(i);

                        add(i, cb);

                        remove(size() - 1);

                }

        }

}