/*******************************************************************************
 * Copyright (c)  2009 Obeo.
 * 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:
 *     Obeo - initial API and implementation
 *******************************************************************************/
package org.eclipse.papyrus.infra.discovery.ui;

import org.eclipse.papyrus.infra.core.log.LogHelper;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * Activator of the plugin. (Singleton instance)
 */
public class Activator extends AbstractUIPlugin {

    /** ID of the plugin */
    public static final String PLUGIN_ID = "org.eclipse.papyrus.infra.discovery.ui";

    /** singleton instance of the plugin */
    private static Activator plugin;
    
    /** logging system */
    public static LogHelper logHelper;

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

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

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

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

}