001/*
002 * Copyright (c) 2015 Maxim Yunusov
003 *    Licensed under the Apache License, Version 2.0 (the "License");
004 *    you may not use this file except in compliance with the License.
005 *    You may obtain a copy of the License at
006 *
007 *        http://www.apache.org/licenses/LICENSE-2.0
008 *
009 *    Unless required by applicable law or agreed to in writing, software
010 *    distributed under the License is distributed on an "AS IS" BASIS,
011 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012 *    See the License for the specific language governing permissions and
013 *    limitations under the License.
014 */
015
016package org.maxur.perfmodel.backend;
017
018import org.glassfish.hk2.api.Factory;
019import org.glassfish.hk2.api.ServiceLocator;
020import org.jvnet.hk2.annotations.Service;
021import org.maxur.perfmodel.backend.service.impl.CliApplication;
022import org.maxur.perfmodel.backend.service.impl.TrayIconApplication;
023import org.maxur.perfmodel.backend.service.Application;
024import org.slf4j.Logger;
025
026import javax.inject.Inject;
027
028import static org.slf4j.LoggerFactory.getLogger;
029
030/**
031 * @author myunusov
032 * @version 1.0
033 * @since <pre>01.09.2015</pre>
034 */
035@Service
036public class ApplicationProvider implements Factory<Application> {
037
038    private static final Logger LOGGER = getLogger(ApplicationProvider.class);
039
040    private Application application;
041
042    @Inject
043    private ServiceLocator locator;
044
045    @Override
046    public Application provide() {
047        if (application == null) {
048            application = make();
049            locator.inject(application);
050        }
051        return application;
052    }
053
054    private Application make() {
055        final Application result = new TrayIconApplication();
056        if (result.isApplicable()) {
057            return result;
058        } else {
059            LOGGER.info("SystemTray is not supported");
060        }
061        return new CliApplication();
062    }
063
064    @Override
065    public void dispose(Application instance) {
066        instance.stop();
067    }
068}