private void UpdateLanguages()
{
ProgressBarOverlay.Show(FileLanguage.ProgressOverlay_UpdatingLibrary);
longRunningOperation = App.Engine.RequestLanguageListUpdate()
.ObserveOnDispatcher()
.Finally(
() =>
{
ProgressBarOverlay.Close();
longRunningOperation = null;
PhoneApplicationService.Current.State.Remove(KLanguagesPageUpdateInProgress);
// leave this page if library contents were deleted (for example
// on failed update or after user interruption)
if (App.Engine.ApplicationSettings.AvailableLanguages.LanguageList.Count == -1)
{
MessageBox.Show(FileLanguage.LibraryUnavailableAfterFailedUpdate);
NavigationService.GoBack();
}
})
.Subscribe <List <LanguageInfo> >(
languageList => ReloadLanguages(languageList),
Utils.StandardErrorHandler
);
}