/**
 *                                                                            
 *  Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  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:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 */
package org.eclipse.osbp.bpmn2.ecore.ui;

import org.apache.log4j.Logger;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.eclipse.xtext.ui.shared.SharedStateModule;
import org.eclipse.osbp.bpmn2.ecore.BPMnRuntimeModule;
import org.osgi.framework.BundleContext;

import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.util.Modules;

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

	private static final Logger logger = Logger.getLogger(Activator.class);

	// The plug-in ID
	public static final String PLUGIN_ID = "org.eclipse.osbp.bpmn2.ecore.ui"; //$NON-NLS-1$

	// The shared instance
	private static Activator plugin;

	private Injector injector;

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

	public Injector getInjector() {
		if (injector == null) {
			initializeEcoreInjector();
		}
		return injector;
	}

	private void initializeEcoreInjector() {
		injector = Guice.createInjector(Modules.override(
				Modules.override(new BPMnRuntimeModule()).with(
						new BPMnUiModule(plugin)))
				.with(new SharedStateModule()));
	}

	@Override
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
		// try {
		// initializeEcoreInjector();
		// } catch(Exception e) {
		// logger.error(e.getMessage(), e);
		// throw e;
		// }
	}

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

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

}