bundles/org.eclipse.emf.ecp.ide.editor.view/src/org/eclipse/emf/ecp/ide/editor/view/Activator.java

/*******************************************************************************
 * Copyright (c) 2011-2013 EclipseSource Muenchen GmbH and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 * Eugen Neufeld - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.ecp.ide.editor.view;

import org.eclipse.emf.ecp.ide.view.service.IDEViewModelRegistry;
import org.eclipse.emfforms.spi.common.report.ReportService;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;

/**
 * The activator class controls the plug-in life cycle.
 */
public class Activator extends AbstractUIPlugin {

	/** The plug-in ID. */
	public static final String PLUGIN_ID = "org.eclipse.emf.ecp.ide.editor.view"; //$NON-NLS-1$

	private static Activator plugin;

	private ServiceReference<ReportService> reportServiceReference;

	/**
	 * The constructor.
	 */
	public Activator() {
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void stop(BundleContext context) throws Exception {
		plugin = null;
		super.stop(context);
	}

	/**
	 * Returns the shared instance.
	 *
	 * @return the shared instance
	 */
	public static Activator getDefault() {
		return plugin;
	}

	/**
	 * Return the {@link IDEViewModelRegistry}.
	 *
	 * @return the {@link IDEViewModelRegistry}
	 */
	public static IDEViewModelRegistry getViewModelRegistry() {
		final ServiceReference<IDEViewModelRegistry> serviceReference = getDefault().getBundle().getBundleContext()
			.getServiceReference(IDEViewModelRegistry.class);
		if (serviceReference == null) {
			return null;
		}
		return getDefault().getBundle().getBundleContext().getService(serviceReference);
	}

	/**
	 * Returns the {@link ReportService}.
	 *
	 * @return the {@link ReportService}
	 */
	public ReportService getReportService() {
		if (reportServiceReference == null) {
			reportServiceReference = plugin.getBundle().getBundleContext()
				.getServiceReference(ReportService.class);
		}
		return plugin.getBundle().getBundleContext().getService(reportServiceReference);
	}
}