[css] GetElement selector extension

[Bjoern H. <der...@gm...>]

Hi,

  The following small addition to CSS::SAC helps to find the subject of
the current selector. This is basically a workaround for a SAC
limitation, Conditions don't know which selector they are attached to.
This functionality is required for the ToXPath extension. Could we
maintain this in CVS? How/Where? Or could CSS::SAC provide this
functionality natively?

  sub CSS::SAC::Selector::Sibling::GetElement
       { shift->SiblingSelector->GetElement }
  sub CSS::SAC::Selector::Descendant::GetElement
       { shift->SimpleSelector->GetElement  }
  sub CSS::SAC::Selector::Conditional::GetElement
       { shift->SimpleSelector->GetElement  }
  sub CSS::SAC::Selector::Element::GetElement
       { shift }

regards.