Bug 52801 "Press F2 for focus" does not work for spell-checking hovers
"Press F2 for focus" does not work for spell-checking hovers.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
if (textWidget == null)
				return;
				
			try {
				
				ISourceRange range= null;
				if (reference instanceof ILocalVariable) {
					IJavaElement je= ((ILocalVariable)reference).getParent();
					if (je instanceof ISourceReference)
						range= ((ISourceReference)je).getSourceRange();
				} else
					range= reference.getSourceRange();
				
				if (range == null)
					return;
				
				int offset= range.getOffset();
				int length= range.getLength();
				
				if (offset < 0 || length < 0)
					return;
									
				setHighlightRange(offset, length, moveCursor);
				if (!moveCursor)
					return;
											
				offset= -1;
				length= -1;
				
				if (reference instanceof IMember) {