Bug 327026 [Compatibility] NPE thrown when reopening an editor after moving a view into the shared area
1. Open an editor. 2. Move the 'Problems' view into the shared area. 3. Close the 'Problems' view. 4. Close the editor. 5. Reopen the same file from step 1. 6. An NPE is thrown. java.lang.NullPointerException at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.getParentWithContext(PartServiceImpl.java:224) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.internalFixContext(PartServiceImpl.java:272) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:248) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:742) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:795) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2206) at org.eclipse.ui.internal.WorkbenchPage.access$14(WorkbenchPage.java:2173) at org.eclipse.ui.internal.WorkbenchPage$6.run(WorkbenchPage.java:2155) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2151) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2135) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2126) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:354) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:164) at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:219)
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
windowB.setSelectedElement(stack);
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		MPart partB = BasicFactoryImpl.eINSTANCE.createPart();
		stack.getChildren().add(partA);
		stack.getChildren().add(partB);
		stack.setSelectedElement(partA);
		initialize(applicationContext, application);
		getEngine().createGui(windowA);
		getEngine().createGui(windowB);
		EPartService partServiceA = (EPartService) windowA.getContext().get(
				EPartService.class.getName());
		EPartService partServiceB = (EPartService) windowB.getContext().get(
				EPartService.class.getName());
		PartListener partListener = new PartListener();
		partServiceA.addPartListener(partListener);
		partServiceB.activate(partB);
		assertEquals(0, partListener.getVisible());
		assertEquals(0, partListener.getVisibleParts().size());
		assertTrue(partListener.isValid());
		partListener.clear();
		partServiceB.activate(partA);
		assertEquals(0, partListener.getVisible());
		assertEquals(0, partListener.getVisibleParts().size());
		assertTrue(partListener.isValid());
	}
	private void testSavePart(final Save returnValue, boolean confirm,
			boolean beforeDirty, boolean afterDirty, boolean success,
			boolean saveCalled, boolean throwException) {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();