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from brainvisa.processes import *
import registration
import shfjGlobals

name = 'New Referential'
userLevel = 2

signature = Signature(
  'data', ReadDiskItem( 'Any Type', getAllFormats() ),
  'referential_type', OpenChoice( 'Referential of Raw T1 MRI' ), 
  'referential', WriteDiskItem( 'Referential', 'Referential' ),
  )


def initialization( self ):
  def linkRef( self, dummy ):
    if self.data is not None:
      t = self.referential_type
      if t == '':
        t = None
      return registration.getTransformationManager().findOrCreateReferential(
        diskItem=self.data, referentialType=t, simulation=True )
  self.linkParameters( 'referential', ( 'data', 'referential_type' ), linkRef )
  self.setOptional( 'referential_type', 'referential' )


def execution( self, context ):
  context.write( 'data:', self.data )
  tm = registration.getTransformationManager()
  ref = tm.referential( self.data )
  context.write( 'existing referential:', ref )
  # even if a referential exists, it can be incorrect, so use find or create referential
  t = self.referential_type
  if t == '':
    t = None
  ref = tm.findOrCreateReferential( diskItem=self.data, referentialType = t,
    assign=True, output_diskitem=self.referential )
  context.write( 'new ref:', ref )