async Task <HttpResponse> HandleNewXaml(HttpRequest request)
{
JsonHttpResponse response = new JsonHttpResponse();
StreamReader sr = new StreamReader(request.Body, Encoding.UTF8);
string json = await sr.ReadToEndAsync();
EvalRequest evalRequest = Serializer.DeserializeJson <EvalRequest>(json);
EvalResponse evalResponse = new EvalResponse();
response.Data = evalResponse;
EvalResult result = null;
try
{
result = await vm.Eval(evalRequest, mainScheduler, CancellationToken.None);
evalResponse.Messages = result.Messages;
evalResponse.Duration = result.Duration;
Log.Information($"Visualizing result {result.Result}");
if (result.HasResult)
{
var tcs = new TaskCompletionSource <bool>();
Xamarin.Forms.Device.BeginInvokeOnMainThread(async() =>
{
try
{
await previewer.Preview(result);
tcs.SetResult(true);
}
catch (Exception ex)
{
await previewer.NotifyError(new ErrorViewModel("Oh no! An exception!", ex));
tcs.SetException(ex);
}
});
await tcs.Task;
}
else
{
Xamarin.Forms.Device.BeginInvokeOnMainThread(async() =>
{
await previewer.NotifyError(new ErrorViewModel("Oh no! An evaluation error!", result));
});
}
return(response);
}
catch (Exception ex)
{
Log.Exception(ex);
response.StatusCode = HttpStatusCode.InternalServerError;
return(response);
}
}
async Task HandleEvalRequest(EvalRequest request)
{
EvalResponse evalResponse = new EvalResponse();
EvalResult result;
try
{
result = await vm.Eval(request, mainScheduler, CancellationToken.None);
if (result.HasResult)
{
var tcs = new TaskCompletionSource <bool>();
Xamarin.Forms.Device.BeginInvokeOnMainThread(async() =>
{
try
{
await previewer.Preview(result);
tcs.SetResult(true);
}
catch (Exception ex)
{
errorViewModel.SetError("Oh no! An exception!", ex);
await previewer.NotifyError(errorViewModel);
tcs.SetException(ex);
}
});
await tcs.Task;
}
else
{
Xamarin.Forms.Device.BeginInvokeOnMainThread(async() =>
{
errorViewModel.SetError("Oh no! An evaluation error!", result);
await previewer.NotifyError(errorViewModel);
});
}
}
catch (Exception ex)
{
Log.Exception(ex);
}
}
async Task HandleEvalRequest(EvalRequestMessage request)
{
EvalResponse evalResponse = new EvalResponse();
EvalResult result;
try
{
result = await vm.Eval(request, mainScheduler, CancellationToken.None);
if (result.HasResult || result.ResultType != null)
{
await uiToolkit.RunInUIThreadAsync(async() =>
{
try
{
await previewer.Preview(result);
}
catch (Exception ex)
{
errorViewModel.SetError("Oh no! An exception!", ex);
await previewer.NotifyError(errorViewModel);
}
});
}
else
{
await uiToolkit.RunInUIThreadAsync(async() =>
{
errorViewModel.SetError("Oh no! An evaluation error!", result);
await previewer.NotifyError(errorViewModel);
});
}
}
catch (Exception ex)
{
Log.Exception(ex);
}
}
