private protected virtual void ExecuteChangeDiscreteValue(WriteableChangeDiscreteValueOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
int NewValue = operation.NewValue;
IWriteableNodeState State = (IWriteableNodeState)GetState(ParentNode);
Debug.Assert(State != null);
Debug.Assert(State.ValuePropertyTypeTable.ContainsKey(PropertyName));
Debug.Assert(State.ValuePropertyTypeTable[PropertyName] == Constants.ValuePropertyType.Boolean || State.ValuePropertyTypeTable[PropertyName] == Constants.ValuePropertyType.Enum);
int OldValue = NodeTreeHelper.GetEnumValue(State.Node, PropertyName);
NodeTreeHelper.GetEnumRange(Type.FromGetType(State.Node), PropertyName, out int Min, out int Max);
Debug.Assert(NewValue >= Min && NewValue <= Max);
NodeTreeHelper.SetEnumValue(State.Node, PropertyName, NewValue);
operation.Update(State, OldValue);
NotifyDiscreteValueChanged(operation);
}