public async Task <bool> WaitAsync(CancellationToken cancellationToken = default)
{
var queue = new TaskCompletionQueuedSource <T>();
void SubscribeOnChange(T newValue) => queue.NewData(newValue);
try
{
OnChange.Add(SubscribeOnChange);
if (await queue.WaitValueAsync(cancellationToken).ConfigureAwait(false) is var result && result.Ok)
{
Value = result.Value;
}
return(result.Ok);
}
finally
{
OnChange.Remove(SubscribeOnChange);
}
}
public async Task <bool> WaitValueAsync(T[] waitValues, CancellationToken cancellationToken = default)
{
if (waitValues is null || waitValues.Length == 0)
{
return(false);
}
var queue = new TaskCompletionQueuedSource <T>();
if (waitValues.Contains(Value))
{
return(true);
}
void SubscribeOnChange(T newValue) => queue.NewData(newValue);
try
{
OnChange.Add(SubscribeOnChange);
bool running = true;
while (running)
{
if (await queue.WaitValueAsync(cancellationToken).ConfigureAwait(false) is var result && result.Ok)
{
if (waitValues.Contains(result.Value))
{
return(true);
}
}
else
{
running = false;
}
if (cancellationToken.IsCancellationRequested)
{
running = false;
}
}
