/// <summary>
/// adds new promise constructor to current promise and returns wrapper that resolves with added promise
/// A.Then(B) - returns promise that resolves when promise from B is resolved
/// </summary>
/// <param name="next">constructor for next promise</param>
/// <returns>Promise</returns>
public IPromise Then(Func <IPromise> next)
{
Deferred deferred = Deferred.GetFromPool();
Done(() =>
{
IPromise promise = next();
promise.Done(() => deferred.Resolve());
promise.Fail(ex => deferred.Reject(ex));
});
Fail(ex => deferred.Reject(ex));
return(deferred);
}
