Bug 6754 Hierarchy does not show selection on F4
Build 20011206 - opened hierarchy on org.eclipse.jface.dialogs.MessageDialog - selected Dialog superclass and hit F4 - the resulting hierarchy was scrolled to the end, with the selection (Dialog) not visible
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
return;
		}
		
		IJavaElement elem= (IJavaElement)editor.getEditorInput().getAdapter(IJavaElement.class);
		try {
			TypeHierarchyViewer currentViewer= getCurrentViewer();
			if (elem instanceof IClassFile) {
				IType type= ((IClassFile)elem).getType();
				if (currentViewer.isElementShown(type)) {
					internalSelectType(type);
					updateMethodViewer(type);
				}
			} else if (elem instanceof ICompilationUnit) {
				IType[] allTypes= ((ICompilationUnit)elem).getAllTypes();
				for (int i= 0; i < allTypes.length; i++) {
					if (currentViewer.isElementShown(allTypes[i])) {
						internalSelectType(allTypes[i]);
						updateMethodViewer(allTypes[i]);
						return;
					}
				}
			}	
		} catch (JavaModelException e) {
			JavaPlugin.log(e.getStatus());
		}
		
	}	
	
}