/// <summary>
/// Callback to be executed when the reported progress changes
/// </summary>
/// <param name="callback">Callback to be executed with the progress [0, 100] and the message</param>
/// <returns>
/// The current instance for chaining additional calls
/// </returns>
public IPromise <T> Progress(Action <int, string> callback)
{
if (_status == Status.Pending)
{
LinkedListOps.Add(ref _callback, new Callback(callback, Condition.Progress));
}
return(this);
}
IPromise IPromise.Done(Action <object> callback)
{
if (_status == Status.Resolved)
{
callback.Invoke(_arg);
}
else
{
LinkedListOps.Add(ref _callback, new Callback(callback, Condition.Success));
}
return(this);
}
/// <summary>
/// Callback to be executed when the promise encounters an error
/// </summary>
/// <param name="callback">Callback to be executed with the exception of the promise</param>
/// <returns>The current instance for chaining additional calls</returns>
public IPromise <T> Fail(Action <Exception> callback)
{
if (_status == Status.Rejected)
{
callback.Invoke((Exception)_arg);
}
else
{
LinkedListOps.Add(ref _callback, new Callback(callback, Condition.Failure));
}
return(this);
}
/// <summary>
/// Callback to be executed when the promise completes regardless of whether an error occurred
/// </summary>
/// <param name="callback">Callback to be executed</param>
/// <returns>The current instance for chaining additional calls</returns>
public IPromise <T> Always(Action callback)
{
if (_status != Status.Pending)
{
callback.Invoke();
}
else
{
LinkedListOps.Add(ref _callback, new Callback(callback, Condition.Always));
}
return(this);
}
internal void QuickAddAttribute(ILinkedAnnotation attr)
{
LinkedListOps.Add(ref _lastAttr, attr);
}
internal void QuickAddElement(ILinkedElement elem)
{
_content = LinkedListOps.Add(_content as ILinkedElement, elem);
}