parameters: (self)
docstring: Return True if this observer is already a part of the VTK interactor.
docstring_summary: Return True if this observer is already a part of the VTK interactor.
docstring_tokens: Return True if this observer is already a part of the VTK interactor .
function: def isActive(self):
          """
          Return True if this observer is already a part of the VTK interactor.
          """
          if self._vtk_command is not None:
              return self._window.getVTKInteractor().HasObserver(self._event, self._vtk_command)
          else:
              return False
function_tokens: def isActive ( self ) : if self . _vtk_command is not None : return self . _window . getVTKInteractor ( ) . HasObserver ( self . _event , self . _vtk_command ) else : return False