001    /**
002     * Copyright (c) 2000-2013 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.mobile.device.messaging;
016    
017    import com.liferay.portal.kernel.messaging.BaseDestinationEventListener;
018    import com.liferay.portal.kernel.messaging.DestinationNames;
019    import com.liferay.portal.kernel.messaging.MessageListener;
020    import com.liferay.portal.kernel.messaging.proxy.ProxyMessageListener;
021    import com.liferay.portal.kernel.mobile.device.DeviceDetectionUtil;
022    import com.liferay.portal.kernel.mobile.device.DeviceRecognitionProvider;
023    
024    /**
025     * @author Milen Dyankov
026     * @author Michael C. Han
027     * @author Shuyang Zhou
028     */
029    public class DeviceRecognitionProviderDestinationEventListener
030            extends BaseDestinationEventListener {
031    
032            @Override
033            public void messageListenerRegistered(
034                    String destinationName, MessageListener messageListener) {
035    
036                    if (!isProceed(destinationName, messageListener)) {
037                            return;
038                    }
039    
040                    DeviceDetectionUtil deviceDetectionUtil = new DeviceDetectionUtil();
041    
042                    deviceDetectionUtil.setDeviceRecognitionProvider(
043                            _proxyDeviceRecognitionProvider);
044            }
045    
046            @Override
047            public void messageListenerUnregistered(
048                    String destinationName, MessageListener messageListener) {
049    
050                    if (!isProceed(destinationName, messageListener)) {
051                            return;
052                    }
053    
054                    DeviceDetectionUtil deviceDetectionUtil = new DeviceDetectionUtil();
055    
056                    deviceDetectionUtil.setDeviceRecognitionProvider(
057                            _directDeviceRecognitionProvider);
058            }
059    
060            public void setDirectDeviceRecognitionProvider(
061                    DeviceRecognitionProvider directDeviceRecognitionProvider) {
062    
063                    _directDeviceRecognitionProvider = directDeviceRecognitionProvider;
064            }
065    
066            public void setProxyDeviceRecognitionProvider(
067                    DeviceRecognitionProvider proxyDeviceRecognitionProvider) {
068    
069                    _proxyDeviceRecognitionProvider = proxyDeviceRecognitionProvider;
070            }
071    
072            protected boolean isProceed(
073                    String destinationName, MessageListener messageListener) {
074    
075                    if (!destinationName.equals(
076                                    DestinationNames.DEVICE_RECOGNITION_PROVIDER) ||
077                            !(messageListener instanceof ProxyMessageListener)) {
078    
079                            return false;
080                    }
081                    else {
082                            return true;
083                    }
084            }
085    
086            private DeviceRecognitionProvider _directDeviceRecognitionProvider;
087            private DeviceRecognitionProvider _proxyDeviceRecognitionProvider;
088    
089    }