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Added DispatchAsync to QCoreApplication

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Applications can now dispatch async task returning functions in addition to Actions
This commit is contained in:
James Davila 2019-03-06 12:15:40 -05:00
parent 6f25ddfb89
commit b7ff59629f
1 changed files with 28 additions and 0 deletions
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28
src/net/Qml.Net/QCoreApplication.cs
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@ -82,6 +82,34 @@ namespace Qml.Net
RequestTrigger();
}
public Task DispatchAsync(Func<Task> action)
{
var tcs = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
using (var cts = new CancellationTokenSource(TimeSpan.FromSeconds(5)))
{
cts.Token.Register(tcs.SetCanceled);
Dispatch(() =>
{
try
{
if (tcs.Task.IsCanceled)
{
return;
}
var task = action();
task.ContinueWith((x) => tcs.SetResult(true), TaskContinuationOptions.NotOnFaulted);
task.ContinueWith((x) => tcs.SetException(new OperationCanceledException()), TaskContinuationOptions.OnlyOnCanceled);
task.ContinueWith((x) => tcs.SetException(x.Exception), TaskContinuationOptions.OnlyOnFaulted);
}
catch (Exception ex)
{
tcs.SetException(ex);
}
});
return tcs.Task;
}
}
public static void Exit(int returnCode = 0)
{
Interop.QCoreApplication.Exit(returnCode);