void downloadUpdates()
{
State = "ProgressState";
var updateManager = getUpdateManager();
updateManager.DownloadReleases(UpdateInfo.ReleasesToApply, progress)
// always be disposing
.Finally(updateManager.Dispose)
.Catch <Unit, Exception>(ex => {
UserError.Throw(new UserError("Something unexpected happened", innerException: ex));
return(Observable.Return(Unit.Default));
})
// this next line isn't necessary in The Real World
// but i'm adding it here to emphasize
// the progress bar that you get here
.Delay(TimeSpan.FromSeconds(1.5))
.ObserveOn(SynchronizationContext.Current)
.Subscribe(_ =>
{
var viewModel = getApplyViewModel.Value;
viewModel.UpdateInfo = UpdateInfo;
HostScreen.Navigate(viewModel);
});
}
void checkForUpdates()
{
State = "ProgressState";
if (!settingsProvider.IsUpdateLocationSet)
{
UserError.Throw("You haven't specified where the updates are located. Go back to the settings menu.");
return;
}
var updateManager = getUpdateManager();
updateManager.CheckForUpdate(!UseDeltaPackages, progress)
.Catch <UpdateInfo, SquirrelConfigurationException>(ex => {
UserError.Throw(new UserError("Something unexpected happened", innerException: ex));
return(Observable.Return <UpdateInfo>(null));
})
// always be disposing
.Finally(updateManager.Dispose)
// this next line isn't necessary in The Real World
// but i'm adding it here to emphasize
// the progress bar that you get here
.Delay(TimeSpan.FromSeconds(1.5))
.ObserveOn(SynchronizationContext.Current)
.Subscribe(updateInfo => {
if (updateInfo == null)
{
return;
}
if (updateInfo.ReleasesToApply.Any())
{
var viewModel = getDownloadViewModel.Value;
viewModel.UpdateInfo = updateInfo;
HostScreen.Navigate(viewModel);
}
else
{
State = "NoChangesState";
}
});
}
