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
MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		MPartSashContainer partSashContainer = BasicFactoryImpl.eINSTANCE
				.createPartSashContainer();
		MPartStack stack = BasicFactoryImpl.eINSTANCE.createPartStack();
		
		stack.setElementId("aStack");
		partSashContainer.getChildren().add(stack);
		window.getChildren().add(partSashContainer);
		application.getChildren().add(window);
		
		MWindow window2 = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window2);
		wb = new E4Workbench(application, appContext);
		wb.createAndRunUI(window);
		IPresentationEngine engine = appContext.get(IPresentationEngine.class);
		engine.createGui(window2);
		
		
		
		EPartService service = (EPartService) window2.getContext().get(
				EPartService.class.getName());
		service.showPart("part", EPartService.PartState.VISIBLE);
		service.showPart("part", EPartService.PartState.CREATE);
		service.showPart("part2", EPartService.PartState.CREATE);
		while (Display.getDefault().readAndDispatch())
			;
	}
	public void testPart_ToBeRendered() {