public IFuture <T> OnItem(FutureValueCallback <T> callback)
{
if (_state < FutureState.Success && !_itemCallbacks.Contains(callback))
{
_itemCallbacks.Add(callback);
}
return(this);
}
/// <summary>
/// Adds a new callback to invoke if the future value is retrieved successfully.
/// </summary>
/// <param name="callback">The callback to invoke.</param>
/// <returns>The future so additional calls can be chained together.</returns>
public IFuture <T> OnSuccess(FutureValueCallback <T> callback)
{
if (_state == FutureState.Success)
{
callback(this.value);
}
else if (_state != FutureState.Error && !_successCallbacks.Contains(callback))
{
_successCallbacks.Add(callback);
}
return(this);
}
public IFuture <TResult> OnSuccess(FutureValueCallback <TResult> callback)
{
return(this.future.OnSuccess(callback));
}
public IFuture <TResult> OnItem(FutureValueCallback <TResult> callback)
{
return(this.future.OnItem(callback));
}
