Activator.java

/**
 * Copyright (c) 2011-2013 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.obeonetwork.bpmn2.design;

import org.eclipse.sirius.business.api.componentization.ViewpointRegistry;
import org.eclipse.sirius.viewpoint.description.Viewpoint;

import java.util.HashSet;
import java.util.Set;

import org.eclipse.core.runtime.Status;
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.obeonetwork.dsl.bpmn2.design";

	// The shared instance
	private static Activator plugin;

	private static Set<Viewpoint> viewpoints;

	/**
	 * 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;
		viewpoints = new HashSet<Viewpoint>();
		viewpoints.addAll(ViewpointRegistry.getInstance().registerFromPlugin(
				PLUGIN_ID + "/description/BPMN2.odesign"));
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(BundleContext context) throws Exception {
		plugin = null;
		if (viewpoints != null) {
			for (final Viewpoint viewpoint : viewpoints) {
				ViewpointRegistry.getInstance().disposeFromPlugin(viewpoint);
			}
			viewpoints.clear();
			viewpoints = null;
		}
		super.stop(context);
	}

	/**
	 * Returns the shared instance
	 * 
	 * @return the shared instance
	 */
	public static Activator getDefault() {
		return plugin;
	}
	
	/**
	 * A helper to log plugin errors.
	 * 
	 * @param severity
	 *            the error severity.
	 * @param message
	 *            the error message.
	 * @param exception
	 *            the error exception.
	 */
	public static void log(int severity, String message, Throwable exception) {
		getDefault().getLog().log(new Status(severity, PLUGIN_ID, message, exception));
	}
}