private Task SetTitleBarColorsAsync()
{
return(_dispatcher.ExecuteAsync(() =>
{
var theme = Application.Current.RequestedTheme == ApplicationTheme.Light ? ElementTheme.Light : ElementTheme.Dark;
ContrastHelper.SetTitleBarButtonsForTheme(theme);
}));
}
private async Task Loop()
{
while (true)
{
TimeSpan delay;
var param = default(T);
CancellationTokenSource cts;
TaskCompletionSource <object> tcs = null;
lock (_lock)
{
cts = _cts;
if (cts?.IsCancellationRequested ?? true)
{
_tcs?.TrySetCanceled();
_tcs = null;
return;
}
delay = _executionTime.Subtract(DateTime.UtcNow);
// To avoid waiting for only few milliseconds we're using some threshold
if (delay.TotalMilliseconds < DelayThresholdMilliseconds)
{
param = _param;
_cts?.Dispose();
_cts = cts = null;
tcs = _tcs;
_tcs = null;
}
}
if (cts == null)
{
if (_dispatcher == null)
{
_action(param);
}
else
{
await _dispatcher.ExecuteAsync(() => _action(param)).ConfigureAwait(false);
}
tcs?.TrySetResult(null);
return;
}
try
{
await Task.Delay(delay, cts.Token).ConfigureAwait(false);
}
catch
{
// Canceled
break;
}
}
}