[Flow] How to determine the currently called controller

[Christian Loock]

Hello,

inside my ViewHelper i need to know which Action/Controller/Package is
currently being called (to determin the active state of a Menu item).

I tried to create an ActionRequest like this:

\TYPO3\Flow\Http\Request::createFromEnvironment()->createActionRequest()

But the ActionRequest will always return NULL when i try to call controller
Information.

What is the best way to get those informations outside of a
ActionController?

Thanks in advance,

Christian