Activator.java example

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gmf-tooling-master
/*
 * Copyright (c) 2006, 2007 Borland Software Corporation
 * 
 * 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:
 *    Artem Tikhomirov (Borland) - initial API and implementation
 */
package org.eclipse.gmf.internal.graphdef.codegen;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;

import org.eclipse.core.runtime.Plugin;
import org.eclipse.gmf.graphdef.codegen.MapModeCodeGenStrategy;
import org.eclipse.gmf.internal.xpand.ResourceManager;
import org.eclipse.gmf.internal.xpand.util.BundleResourceManager;
import org.osgi.framework.BundleContext;

public class Activator extends Plugin {
	private static Activator instance;

	public Activator() {
		instance = this;
	}

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

	public static ResourceManager createResourceEngine(MapModeCodeGenStrategy strategy, URL... dynamicTemplates) {
		try {
			URL baseURL = instance.getBundle().getEntry("/templates/");
			ArrayList<URL> urls = new ArrayList<URL>(3);
			if (dynamicTemplates != null) {
				// XXX perhaps, add strategy token to each url
				// to keep dynamic template structure similar to those bundled?
				urls.addAll(Arrays.asList(dynamicTemplates));
			}
			if (strategy.getToken().length() > 0) {
				urls.add(new URL(baseURL, strategy.getToken() + '/'));
			}
			urls.add(baseURL);
			return new BundleResourceManager(urls.toArray(new URL[urls.size()]));
		} catch (MalformedURLException ex) {
			throw new Error(ex);
		}
	}
}