package gw.rating.flow

uses com.guidewire.pc.domain.rating.flow.CalcStepValueDelegateAdapter

class CalcStepDefinitionOperandAdapter implements CalcStepValueDelegateAdapter{

  var _owner : CalcStepDefinitionOperand
  
  construct( owner : CalcStepDefinitionOperand) {
    _owner = owner
  }
  
  override function changeToOperandType(targetType : CalcStepOperandType) {
    // In case of sub operands, do not wipe out other operands
    if (_owner.PrimaryOperand) {
      _owner.CalcStep.removeOperands()
    }
    if (_owner.OperandType != targetType) {
      // do something special when transitioning between typelist constant and typelist collection
      if (_owner.OperandType == TC_CONSTANT and _owner.TypekeyConstantValue != null and targetType == TC_COLLECTION) {
        _owner.TypelistCollection =  { _owner.TypekeyConstantValue }
      } else if (_owner.OperandType == TC_COLLECTION and targetType == TC_CONSTANT) {
        final var val = _owner.TypelistCollection?.first()
        _owner.TypelistCollection = {}
        _owner.TypekeyConstantValue = val
      } else {
        _owner.clearOperandValues()
      }
      _owner.OperandType = targetType
    }
  }

  override property get OwningStep(): CalcStepDefinition {
    return _owner.CalcStep
  }

}