001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.portlet.configuration.icon;
016    
017    import com.liferay.registry.Registry;
018    import com.liferay.registry.RegistryUtil;
019    import com.liferay.registry.ServiceReference;
020    import com.liferay.registry.ServiceTracker;
021    import com.liferay.registry.ServiceTrackerCustomizer;
022    
023    import java.util.List;
024    import java.util.concurrent.CopyOnWriteArrayList;
025    
026    /**
027     * @author Eudaldo Alonso
028     */
029    public class PortletConfigurationIconTracker {
030    
031            public static List<PortletConfigurationIconFactory>
032                    getPortletConfigurationIcons() {
033    
034                    return _portletConfigurationIconFactories;
035            }
036    
037            public PortletConfigurationIconTracker() {
038                    Registry registry = RegistryUtil.getRegistry();
039    
040                    _serviceTracker = registry.trackServices(
041                            PortletConfigurationIconFactory.class,
042                            new PortletConfigurationIconServiceTrackerCustomizer());
043    
044                    _serviceTracker.open();
045            }
046    
047            private static final List<PortletConfigurationIconFactory>
048                    _portletConfigurationIconFactories = new CopyOnWriteArrayList<>();
049    
050            private final ServiceTracker
051                    <PortletConfigurationIconFactory, PortletConfigurationIconFactory>
052                            _serviceTracker;
053    
054            private static class PortletConfigurationIconServiceTrackerCustomizer
055                    implements ServiceTrackerCustomizer
056                            <PortletConfigurationIconFactory, PortletConfigurationIconFactory> {
057    
058                    @Override
059                    public PortletConfigurationIconFactory addingService(
060                            ServiceReference<PortletConfigurationIconFactory>
061                                    serviceReference) {
062    
063                            Registry registry = RegistryUtil.getRegistry();
064    
065                            PortletConfigurationIconFactory portletConfigurationIconFactory =
066                                    registry.getService(serviceReference);
067    
068                            _portletConfigurationIconFactories.add(
069                                    portletConfigurationIconFactory);
070    
071                            return portletConfigurationIconFactory;
072                    }
073    
074                    @Override
075                    public void modifiedService(
076                            ServiceReference<PortletConfigurationIconFactory> serviceReference,
077                            PortletConfigurationIconFactory portletConfigurationIconFactory) {
078                    }
079    
080                    @Override
081                    public void removedService(
082                            ServiceReference<PortletConfigurationIconFactory> serviceReference,
083                            PortletConfigurationIconFactory portletConfigurationIconFactory) {
084    
085                            Registry registry = RegistryUtil.getRegistry();
086    
087                            registry.ungetService(serviceReference);
088    
089                            _portletConfigurationIconFactories.remove(
090                                    portletConfigurationIconFactory);
091                    }
092    
093            }
094    
095    }