package org.eclipse.stem.tests.diseasemodels;

/*******************************************************************************
 * Copyright (c) 2009 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

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
 */
public class Activator extends Plugin {

	// The plug-in ID
	public static final String PLUGIN_ID = "org.eclipse.stem.tests.diseasemodels";

	// The shared instance
	private static Activator plugin;
	
	/**
	 * The constructor
	 */
	public Activator() {
		plugin = this;
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)
	 */
	@Override
	public void start(BundleContext context) throws Exception {
		super.start(context);
	}

	/*
	 * (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;
	}
	
	/**
	 * Log information to the ILog for this plugin
	 * The method is overloaded to allow for logInformation without an error 
	 * method sets the error to null. This should be used instead of System.out.println
	 * throughout the code.
	 * @param message
	 *            the localized information message text
	 *
	 */
	public static void logInformation(String message) {
		// Do we have a plugin?
		if (plugin != null) {
			// Yes
			plugin.getLog().log(
					new Status(IStatus.INFO, plugin.getBundle().getSymbolicName(),
							0, message, null));
		}
		else {
			// No
			System.out.println(message);
		}
	} // logInformation

}