+/*
+ * Copyright (c) 2018-2019. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.chess.img.board;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.imageio.ImageIO;
+
+import org.hedgecode.chess.img.AbstractImageLoader;
+import org.hedgecode.chess.img.ImageConstants;
+import org.hedgecode.chess.img.ImageException;
+import org.hedgecode.chess.img.ImageFilter;
+
+/**
+ *
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public class BoardLoader extends AbstractImageLoader {
+
+ private static final File SQUARES_PATH = new File(IMAGES_PATH, ImageConstants.RESOURCE_SQUARES_DIR);
+
+ private static final String SQUARE_DARK = ImageConstants.DARK_SQUARE_FILENAME;
+ private static final String SQUARE_LIGHT = ImageConstants.LIGHT_SQUARE_FILENAME;
+
+ private static final String[] SQUARE_NAMES = {SQUARE_DARK, SQUARE_LIGHT};
+
+ private Map<String, Board> squareSetMap = new HashMap<>();
+
+ @Override
+ public Board load(String name) throws ImageException {
+ Board board = null;
+ SquarePair<BufferedImage> squarePair = null;
+ if (Type.STATELESS.equals(loadType()) || !squareSetMap.containsKey(name)) {
+ File boardPath = new File(SQUARES_PATH, name);
+ if (boardPath.exists() && boardPath.isDirectory()) {
+ squarePair = loadSquares(name, boardPath);
+ }
+ if (squarePair != null) {
+ board = Board.create(squarePair);
+ if (Type.STATEFUL.equals(loadType())) {
+ squareSetMap.put(name, board);
+ }
+ }
+ } else {
+ board = squareSetMap.get(name);
+ }
+ return board;
+ }
+
+ @Override
+ public void unload(String name) {
+ if (Type.STATEFUL.equals(loadType()) && squareSetMap.containsKey(name)) {
+ squareSetMap.remove(name);
+ }
+ }
+
+ @Override
+ protected void clear() {
+ squareSetMap.clear();
+ }
+
+ private SquarePair<BufferedImage> loadSquares(String name, File boardPath) throws ImageException {
+ BufferedImage dark = null, light = null;
+ File[] images = boardPath.listFiles(new ImageFilter(SQUARE_NAMES));
+ if (images != null) {
+ for (File image : images) {
+ if (image.isFile()) {
+ String filename = image.getName();
+ try {
+ switch (filename.substring(0, filename.lastIndexOf('.'))) {
+ case SQUARE_DARK:
+ dark = ImageIO.read(image);
+ break;
+ case SQUARE_LIGHT:
+ light = ImageIO.read(image);
+ break;
+ }
+ } catch (IOException e) {
+ throw new ImageException(e.getMessage()); // todo: locale
+ }
+ }
+ }
+ }
+ return (dark != null && light != null) ? SquarePair.create(dark, light) : null;
+ }
+
+}