/// <summary>
/// Handler called every time a state is unassigned in the controller.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
private protected virtual void OnStateUnassigned(IWriteableAssignmentOperation operation)
{
Debug.Assert(operation != null);
IWriteableOptionalNodeState State = operation.State;
Debug.Assert(State != null);
Debug.Assert(StateViewTable.ContainsKey(State));
}
/// <summary>
/// Unassign the optional node.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
public void Unassign(IWriteableAssignmentOperation operation)
{
NodeTreeHelperOptional.UnassignChildNode(Owner.Node, PropertyName);
operation.Update(ChildState);
}
