Bug 299435 NPE closing contacts demo with a dirty part
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/WBWRenderer.java
* 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
 *******************************************************************************/
package org.eclipse.e4.workbench.ui.renderers.swt;
import java.lang.reflect.InvocationTargetException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import javax.inject.Inject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.e4.core.services.Logger;
import org.eclipse.e4.core.services.annotations.PostConstruct;
import org.eclipse.e4.core.services.annotations.PreDestroy;
import org.eclipse.e4.core.services.context.IEclipseContext;
import org.eclipse.e4.core.services.context.spi.ContextInjectionFactory;
import org.eclipse.e4.core.services.context.spi.IContextConstants;
import org.eclipse.e4.ui.model.application.MElementContainer;
import org.eclipse.e4.ui.model.application.MSaveablePart;
import org.eclipse.e4.ui.model.application.MTrimContainer;
import org.eclipse.e4.ui.model.application.MUIElement;
import org.eclipse.e4.ui.model.application.MWindow;
import org.eclipse.e4.ui.services.IStylingEngine;
import org.eclipse.e4.ui.services.events.IEventBroker;