internal async Task <IDicomClientState> Transition(IDicomClientState newState, DicomClientCancellation cancellation)
{
Task InternalTransition()
{
var oldState = State;
Logger.Debug($"[{oldState}] --> [{newState}]");
oldState.Dispose();
State = newState ?? throw new ArgumentNullException(nameof(newState));
StateChanged?.Invoke(this, new StateChangedEventArgs(oldState, newState));
return(Task.CompletedTask);
}
await ExecuteWithinTransitionLock(InternalTransition).ConfigureAwait(false);
return(await newState.GetNextStateAsync(cancellation).ConfigureAwait(false));
}
/// <summary>
/// Initializes an instance of <see cref="StateChangedEventArgs"/>
/// </summary>
/// <param name="oldState"></param>
/// <param name="newState"></param>
public StateChangedEventArgs(IDicomClientState oldState, IDicomClientState newState)
{
OldState = oldState;
NewState = newState;
}
