/// <summary>Provide a fresh instance of a loader which descriptor
/// has previously been retrieved with the <see cref="EnumerateKnownLoaders"/>
/// method.</summary>
/// <param name="descriptor">Descriptor for the loader to be instanciated.
/// </param>
/// <returns></returns>
public ILoader Instanciate(ILoaderDescriptor descriptor)
{
LoaderInstanciatorDelegate instanciator;
if (!_knownLoaders.TryGetValue(descriptor, out instanciator))
{
throw new ArgumentException();
}
return(instanciator(null));
}
/// <summary>Register a loader in the collection of known ones.
/// Currently, this is a core only feature. There is no way for the
/// suite to be instructed by the client software to do this on the
/// fly.</summary>
/// <param name="descriptor">Registered loader descriptor (mandatory).
/// </param>
/// <param name="instanciator">An instanciator delegate that can create
/// a fresh instance of the loader.</param>
internal void RegisterLoader(ILoaderDescriptor descriptor,
LoaderInstanciatorDelegate instanciator)
{
if (null == descriptor)
{
throw new ArgumentNullException();
}
if (null == instanciator)
{
throw new ArgumentNullException();
}
if (_knownLoaders.ContainsKey(descriptor))
{
throw new InvalidOperationException();
}
_knownLoaders.Add(descriptor, instanciator);
return;
}
