bundles/papyrus/org.eclipse.papyrus.ease.lang.python.jupyter/src/org/eclipse/papyrus/ease/lang/python/jupyter/Activator.java

/*****************************************************************************
 * Copyright (c) 2019 CEA LIST 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:
 *   CEA LIST - Initial API and implementation
 *   
 *****************************************************************************/
package org.eclipse.papyrus.ease.lang.python.jupyter;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.papyrus.ease.lang.python.jupyter.internal.JupyterProxy;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * 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.papyrus.ease.lang.python.jupyter"; //$NON-NLS-1$

	// The shared instance
	private static Activator plugin;

	private List<JupyterProxy> runningProxies = new ArrayList<>();
	
	/**
	 * The constructor
	 */
	public Activator() {
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(BundleContext context) throws Exception {
		for (JupyterProxy proxy : runningProxies ) {
			proxy.shutDown();;
		}
		
		plugin = null;
		
		
		super.stop(context);
	}

	/**
	 * Returns the shared instance
	 *
	 * @return the shared instance
	 */
	public static Activator getDefault() {
		return plugin;
	}
	
	public synchronized void registeProxy(JupyterProxy proxy) {
		runningProxies.add(proxy);
	}
	
	public synchronized void unRegisterProxy(JupyterProxy proxy) {
		runningProxies.remove(proxy);
	}

}