Bug 325148 EPS should not select an unrendered element when hiding a part
1. Open a file. 2. Drag a view into the editor stack. 3. Close the view. 4. Close the editor. java.lang.NullPointerException at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.setCSSInfo(SWTPartRenderer.java:68) at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.bindWidget(SWTPartRenderer.java:96) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:574) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:414) at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:547) at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer$1.handleEvent(LazyStackRenderer.java:75) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:41) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:188) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:198) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:227) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:149) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:139) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39) at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:73) at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:380) at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:159) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:734) at org.eclipse.ui.internal.WorkbenchPage.hidePart(WorkbenchPage.java:999) at org.eclipse.ui.internal.WorkbenchPage.closeEditors(WorkbenchPage.java:899) at org.eclipse.ui.internal.WorkbenchPage.closeEditor(WorkbenchPage.java:1055) at org.eclipse.ui.internal.CloseEditorHandler.execute(CloseEditorHandler.java:47)
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
getEngine().createGui(window);
		EPartService partService = (EPartService) window.getContext().get(
				EPartService.class.getName());
		MPart shownPart = partService.showPart("partId", partState);
		assertEquals(1, window.getChildren().size());
		assertEquals(part, window.getChildren().get(0));
		assertEquals(part, shownPart);
		assertTrue("A shown part should be rendered", part.isToBeRendered());
	}
	public void testShowPart_Id_Unrendered_CREATE() {
		testShowPart_Id_Unrendered(PartState.CREATE);
	}
	public void testShowPart_Id_Unrendered_VISIBLE() {
		testShowPart_Id_Unrendered(PartState.VISIBLE);
	}
	public void testShowPart_Id_Unrendered_ACTIVATE() {
		testShowPart_Id_Unrendered(PartState.ACTIVATE);
	}
	private void testShowPart_Id_Unrendered2(EPartService.PartState partState) {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		window.setToBeRendered(true);
		application.getChildren().add(window);
		application.setSelectedElement(window);
		MPartStack partStack = BasicFactoryImpl.eINSTANCE.createPartStack();
		partStack.setToBeRendered(false);
		window.getChildren().add(partStack);
		window.setSelectedElement(partStack);
		MPart part = BasicFactoryImpl.eINSTANCE.createPart();