/*******************************************************************************

 * Copyright (c) 2010, 2011 Technical University of Denmark.

 * All rights reserved. This program and the accompanying materials 

 * are made available under the terms of the Eclipse Public License v1.0 

 * which accompanies this distribution, and is available at 

 * http://www.eclipse.org/legal/epl-v10.html 

 * 

 * Contributors:

 *    Patrick Koenemann, DTU Informatics - initial API and implementation

 *******************************************************************************/

package org.eclipse.emf.compare.mpatch;



import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Plugin;

import org.eclipse.core.runtime.Status;

import org.osgi.framework.BundleContext;



/**

 * The activator class controls the plug-in life cycle.

 * 

 * @author Patrick Koenemann (pk@imm.dtu.dk)

 */

public class Activator extends Plugin {



	// The plug-in ID

	public static final String PLUGIN_ID = "org.eclipse.emf.compare.mpatch";



	// The shared instance

	private static Activator plugin;



	/**

	 * The constructor

	 */

	public Activator() {

		// Nothing to do

	}



	/*

	 * (non-Javadoc)

	 * @see org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)

	 */

	@Override

	public void start(BundleContext context) throws Exception {

		super.start(context);

		plugin = this;

	}



	/*

	 * (non-Javadoc)

	 * @see org.eclipse.core.runtime.Plugin#stop(org.osgi.framework.BundleContext)

	 */

	@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;

	}



	// //////////// SOME LOGGING



	public void logError(String error) {

		logError(error, null);

	}



	public void logError(String error, Throwable throwable) {

		if (error == null && throwable != null) {

			error = throwable.getMessage();

		}

		getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, error, throwable));

		debug(error, throwable);

	}



	public void logInfo(String message) {

		logInfo(message, null);

	}



	public void logInfo(String message, Throwable throwable) {

		if (message == null && throwable != null) {

			message = throwable.getMessage();

		}

		getLog().log(new Status(IStatus.INFO, PLUGIN_ID, IStatus.OK, message, throwable));

		debug(message, throwable);

	}



	private void debug(String message, Throwable throwable) {

		if (!isDebugging()) {

			return;

		}

		if (message != null) {

			System.err.println(message);

		}

		if (throwable != null) {

			throwable.printStackTrace();

		}

	}

}