public Service(IAsyncServiceProvider2 serviceProvider, IThreadingContext threadingContext, IAsynchronousOperationListener listener)
{
_serviceProvider = serviceProvider;
_threadingContext = threadingContext;
_loadHubClientPackage = _threadingContext.JoinableTaskFactory.RunAsync(async() =>
{
// Use the disposal token, since the caller's cancellation token will apply instead to the
// JoinAsync operation in GetProgressStageStatusAsync.
await _threadingContext.JoinableTaskFactory.SwitchToMainThreadAsync(alwaysYield: true, _threadingContext.DisposalToken);
// Make sure the HubClient package is loaded, since we rely on it for proffered OOP services
var shell = await _serviceProvider.GetServiceAsync <SVsShell, IVsShell7>().ConfigureAwait(true);
Assumes.Present(shell);
await shell.LoadPackageAsync(Guids.GlobalHubClientPackageGuid);
});
_progressStageStatus = _threadingContext.JoinableTaskFactory.RunAsync(async() =>
{
// pre-emptively make sure event is subscribed. if APIs are called before it is done, calls will be blocked
// until event subscription is done
using var asyncToken = listener.BeginAsyncOperation("StatusChanged_EventSubscription");
await threadingContext.JoinableTaskFactory.SwitchToMainThreadAsync(alwaysYield: true, _threadingContext.DisposalToken);
var service = await serviceProvider.GetServiceAsync <SVsOperationProgress, IVsOperationProgressStatusService>(throwOnFailure: false).ConfigureAwait(true);
if (service is null)
{
return(null);
}
var status = service.GetStageStatusForSolutionLoad(CommonOperationProgressStageIds.Intellisense);
status.PropertyChanged += (_, _) => StatusChanged?.Invoke(this, EventArgs.Empty);
return(status);
});
}