public Task <IReadOnlyList <object> > GetRootElementsAsync(BindingSource source, object target)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (source.Type != BindingSourceType.Object && source.Type != BindingSourceType.SingleObject)
{
throw new ArgumentException("source.Type was not Object", nameof(source));
}
if (source is BindingSourceInstance instance)
{
source = instance.Original;
}
if (source == RelativeSelf)
{
return(Task.FromResult <IReadOnlyList <object> > (new [] { target }));
}
if (source == StaticResource)
{
return(MockResourceProvider.GetResourceSourcesAsync(target).ContinueWith(t => (IReadOnlyList <object>)t.Result));
}
throw new NotImplementedException();
}
Task <IReadOnlyList <ResourceSource> > IResourceProvider.GetResourceSourcesAsync(object target)
{
return(MockResourceProvider.GetResourceSourcesAsync(target));
}