/// <summary>
/// Logs out the current user.
/// </summary>
/// <param name="cancellationToken"> A token that allows for the operation to be cancelled. </param>
public async Task LogoutAsync(CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
if (!IsLoggedIn)
{
return;
}
try
{
await Authenticator.Instance.LogoutAsync(_authenticationContext, cancellationToken);
}
catch (TaskCanceledException)
{
throw;
}
catch (Exception e)
{
// Ignoring error. It doesn't matter if the logout didn't go through to the server.
TraceFns.WriteLine(string.Format(StringResources.LogoutFailed, e.Message));
}
OnPrincipalChanged();
OnLoggedOut();
}
private void EnsureDelegates()
{
if (_configuration.Delegates != null)
{
return;
}
var i = CompositionContext.GetExportedInstances(typeof(EntityManagerDelegate));
if (i != null)
{
_configuration.WithDelegates(i.OfType <EntityManagerDelegate <T> >().ToArray());
}
if (_configuration.Delegates == null || !_configuration.Delegates.Any())
{
_configuration.WithDelegates(Composition.GetInstances <EntityManagerDelegate>()
.OfType <EntityManagerDelegate <T> >()
.ToArray());
}
TraceFns.WriteLine(_configuration.Delegates.Any()
? string.Format(StringResources.ProbedForEntityManagerDelegateAndFoundMatch,
_configuration.Delegates.Count())
: StringResources.ProbedForEntityManagerDelegateAndFoundNoMatch);
}
private IPredicateDescription GetQueryFilter()
{
try {
List <PredicateDescription> predicates = new List <PredicateDescription>();
foreach (var fd in FilterDescriptors)
{
var p = fd.ToPredicateDescription(Query.ElementType);
if (p != null)
{
predicates.Add(p);
}
}
if (predicates.Count > 0)
{
return(PredicateBuilder.And(predicates.ToArray()));
}
else
{
return(null);
}
} catch (Exception ex) {
TraceFns.WriteLine("Filters ignored: " + ex.Message);
return(null);
}
}
private void WriteTrace()
{
if (_instance != null)
{
TraceFns.WriteLine(String.Format(StringResources.ProbedForServiceAndFoundMatch, typeof(T).Name,
_instance.GetType().FullName));
}
else
{
TraceFns.WriteLine(String.Format(StringResources.ProbedForServiceFoundNoMatch, typeof(T).Name));
}
}
/// <summary>
/// Logs out the current user.
/// </summary>
public void Logout()
{
if (!IsLoggedIn)
{
return;
}
try
{
Authenticator.Instance.Logout(_authenticationContext);
}
catch (Exception e)
{
// Ignoring error. It doesn't matter if the logout didn't go through to the server.
TraceFns.WriteLine(string.Format(StringResources.LogoutFailed, e.Message));
}
OnPrincipalChanged();
OnLoggedOut();
}
public static void TraceWriteLineIf(bool condition, object aObject)
{
TraceFns.WriteLineIf(condition, FormatLogMessage(aObject));
}
public static void TraceWriteLine(object aObject)
{
TraceFns.WriteLine(FormatLogMessage(aObject));
}
