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from Products.ERP5.Document.MovementGroup import MovementGroup

class VariationPropertyMovementGroup(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 that have the same
  variation property dict.
  """
  meta_type = 'ERP5 Movement Group'
  portal_type = 'Variation Property Movement Group'

  def _getPropertyDict(self, movement, **kw):
    return {'variation_property_dict':movement.getVariationPropertyDict()}

  def test(self, object, property_dict, **kw):
    updatable = False
    variation_property_dict = object.getVariationPropertyDict()
    variation_property_list = variation_property_dict.keys()
    if len(variation_property_list) == \
           len(property_dict['variation_property_dict']):
      # Same number of property. Good point.
      for variation_property in variation_property_list:
        try:
          if variation_property_dict[variation_property] != \
              property_dict['variation_property_dict'][variation_property]:
            # Value is not the same for both movements
            break
        except KeyError:
          # Key is not common to both movements
          break
      else:
        updatable = True
    return updatable, property_dict
