com.liferay.commerce.product.internal.util.CPNavigationItemRegistryImpl Maven / Gradle / Ivy

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Liferay Commerce Product Service
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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.commerce.product.internal.util;

import com.liferay.commerce.product.internal.util.comparator.CPNavigationItemServiceWrapperOrderComparator;
import com.liferay.commerce.product.util.CPNavigationItem;
import com.liferay.commerce.product.util.CPNavigationItemRegistry;
import com.liferay.frontend.taglib.clay.servlet.taglib.util.NavigationItem;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerCustomizerFactory;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerCustomizerFactory.ServiceWrapper;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerMap;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerMapFactory;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.util.ListUtil;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import javax.portlet.PortletRequest;

import org.osgi.framework.BundleContext;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;

/**
 * @author Alessio Antonio Rendina
 */
@Component(immediate = true, service = CPNavigationItemRegistry.class)
public class CPNavigationItemRegistryImpl implements CPNavigationItemRegistry {

	@Override
	public List getNavigationItems(
			PortletRequest portletRequest)
		throws PortalException {

		List navigationItems = new ArrayList<>();

		List> cpNavigationItemServiceWrappers =
			ListUtil.fromCollection(_serviceTrackerMap.values());

		Collections.sort(
			cpNavigationItemServiceWrappers,
			_cpNavigationItemServiceWrapperOrderComparator);

		for (ServiceWrapper cpNavigationItemServiceWrapper :
				cpNavigationItemServiceWrappers) {

			CPNavigationItem cpNavigationItem =
				cpNavigationItemServiceWrapper.getService();

			NavigationItem navigationItem = cpNavigationItem.getNavigationItem(
				portletRequest);

			if (navigationItem == null) {
				continue;
			}

			navigationItems.add(navigationItem);
		}

		return navigationItems;
	}

	@Activate
	protected void activate(BundleContext bundleContext) {
		_serviceTrackerMap = ServiceTrackerMapFactory.openSingleValueMap(
			bundleContext, CPNavigationItem.class,
			"commerce.product.navigation.item.key",
			ServiceTrackerCustomizerFactory.serviceWrapper(
				bundleContext));
	}

	@Deactivate
	protected void deactivate() {
		_serviceTrackerMap.close();
	}

	private static final Comparator>
		_cpNavigationItemServiceWrapperOrderComparator =
			new CPNavigationItemServiceWrapperOrderComparator();

	private ServiceTrackerMap>
		_serviceTrackerMap;

}