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from Products.ERP5.Document.MovementGroup import MovementGroup

class RootAppliedRuleCausalityMovementGroup(MovementGroup):
  """
  The purpose of MovementGroup is to define how movements are grouped,
  and how values are updated from simulation movements.

  This movement group is used to group movements whose root apply rule
  has the same causality.
  """
  meta_type = 'ERP5 Root Applied Rule Causality Movement Group'
  portal_type = 'Root Applied Rule Causality Movement Group'

  def _getPropertyDict(self, movement, **kw):
    property_dict = {}
    root_causality_value = self._getRootCausalityValue(movement)
    property_dict['root_causality_value_list'] = [root_causality_value]
    return property_dict

  def test(self, movement, property_dict, **kw):
    # We can always update
    return True, property_dict

  def _getRootCausalityValue(self, movement):
    """ Get the causality value of the root applied rule for a movement """
    return movement.getRootAppliedRule().getCausalityValue()