Bug 336139 NPE thrown when trying to render a trim with unidentified elements
java.lang.NullPointerException at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.isStatusLine(TrimBarLayout.java:245) at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.computeSize(TrimBarLayout.java:146) at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.access$0(TrimBarLayout.java:142) at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout$TrimLine.addControl(TrimBarLayout.java:36) at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.computeSize(TrimBarLayout.java:104) at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:233) at org.eclipse.e4.ui.workbench.renderers.swt.TrimmedPartLayout.layout(TrimmedPartLayout.java:120) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1263) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1249) at org.eclipse.swt.widgets.Composite.layout(Composite.java:664) at org.eclipse.swt.widgets.Composite.layout(Composite.java:622) at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.postProcess(WBWRenderer.java:585)
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/workbench/PartRenderingEngineTests.java
.createPartSashContainer();
		partSashContainer.setToBeRendered(false);
		window.getChildren().add(partSashContainer);
		application.setContext(appContext);
		appContext.set(MApplication.class.getName(), application);
		wb = new E4Workbench(application, appContext);
		wb.createAndRunUI(window);
		partSashContainer.setToBeRendered(true);
	}
	public void test331685() {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);
		MPart part = BasicFactoryImpl.eINSTANCE.createPart();
		window.getChildren().add(part);
		window.setSelectedElement(part);
		application.setContext(appContext);
		appContext.set(MApplication.class.getName(), application);
		wb = new E4Workbench(application, appContext);
		wb.createAndRunUI(window);
		IPresentationEngine engine = appContext.get(IPresentationEngine.class);
		engine.removeGui(part);
		assertNull(part.getWidget());
		engine.createGui(part, null, window.getContext());
		engine.removeGui(part);
	}
	public void testBug331795_1() {
		MApplication application = ApplicationFactoryImpl.eINSTANCE