ImageIconServiceProvider.java

/*
 * Copyright 2016 Igor Maznitsa.
 *
 * 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 com.igormaznitsa.mindmap.swing.services;

import com.igormaznitsa.mindmap.model.logger.LoggerFactory;

import java.util.Iterator;
import java.util.ServiceLoader;

import javax.annotation.Nonnull;

public final class ImageIconServiceProvider {
    private static final ImageIconService IMAGEICON_SERVICE ;

    static {
      final ServiceLoader<ImageIconService> service = ServiceLoader.load(ImageIconService.class, ImageIconService.class.getClassLoader());
      service.reload();
      final Iterator<ImageIconService> iterator = service.iterator();
      IMAGEICON_SERVICE = iterator.hasNext() ? iterator.next() : new DefaultImageIconService();
      LoggerFactory.getLogger(ImageIconServiceProvider.class).info("Image Icon Service factory : "+IMAGEICON_SERVICE.getClass().getName());
    }

    @Nonnull
    public static ImageIconService findInstance () {
      return IMAGEICON_SERVICE;
    }
}