public override void VisitSetItem(IEnumerable setObject, SetDescriptor descriptor, object item, ITypeDescriptor itemDescriptor)
{
base.VisitSetItem(setObject, descriptor, item, itemDescriptor);
var assetReference = item as AssetReference;
var attachedReference = AttachedReferenceManager.GetAttachedReference(item);
if (assetReference != null)
{
AddLink(assetReference,
(guid, location) =>
{
var link = AssetReference.New(guid ?? assetReference.Id, location);
descriptor.Add(setObject, link);
return(link);
});
}
else if (attachedReference != null)
{
AddLink(attachedReference,
(guid, location) =>
{
object link = guid.HasValue && guid.Value != AssetId.Empty ? AttachedReferenceManager.CreateProxyObject(descriptor.ElementType, guid.Value, location) : null;
descriptor.Add(setObject, link);
return(link);
});
}
else if (item is UFile)
{
AddLink(item,
(guid, location) =>
{
var link = new UFile(location);
descriptor.Add(setObject, link);
return(link);
});
}
else if (item is UDirectory)
{
AddLink(item,
(guid, location) =>
{
var link = new UDirectory(location);
descriptor.Add(setObject, link);
return(link);
});
}
}
/// <summary>
/// Tries to convert the <paramref name="sourceSet"/> to the type described by <paramref name="setDescriptor"/>.
/// </summary>
/// <param name="sourceSet"></param>
/// <param name="setDescriptor"></param>
/// <param name="convertedSet"></param>
/// <returns><c>true</c> if the <paramref name="sourceSet"/> could be converted to the type described by <paramref name="setDescriptor"/>; otherwise, <c>false</c>.</returns>
private static bool TryConvertSetData([NotNull] object sourceSet, [NotNull] SetDescriptor setDescriptor, out object convertedSet)
{
try
{
var sourceSetType = sourceSet.GetType();
// Already same type
if (setDescriptor.Type == sourceSetType)
{
convertedSet = sourceSet;
return(true);
}
convertedSet = Activator.CreateInstance(setDescriptor.Type, true);
var sourceSetDescriptor = (ListDescriptor)TypeDescriptorFactory.Default.Find(sourceSetType);
foreach (var item in EnumerateList(sourceSet, sourceSetDescriptor))
{
object obj;
if (!TypeConverterHelper.TryConvert(item, setDescriptor.ElementType, out obj))
{
// (optimistic) try to convert the remaining items
continue;
}
setDescriptor.Add(sourceSet, obj);
}
return(setDescriptor.GetCollectionCount(convertedSet) > 0);
}
catch (InvalidCastException) { }
catch (InvalidOperationException) { }
catch (FormatException) { }
catch (NotSupportedException) { }
catch (Exception ex) when(ex.InnerException is InvalidCastException)
{
}
catch (Exception ex) when(ex.InnerException is InvalidOperationException)
{
}
catch (Exception ex) when(ex.InnerException is FormatException)
{
}
catch (Exception ex) when(ex.InnerException is NotSupportedException)
{
}
// Incompatible type and no conversion available
convertedSet = null;
return(false);
}
private static bool ConvertForSet(SetDescriptor setDescriptor, ref object data)
{
if (SetDescriptor.IsSet(data.GetType()))
{
if (!TryConvertSetData(data, setDescriptor, out data))
{
return(false);
}
}
else
{
object convertedData;
if (!TypeConverterHelper.TryConvert(data, setDescriptor.ElementType, out convertedData))
{
return(false);
}
var convertedCollection = Activator.CreateInstance(setDescriptor.Type, true);
setDescriptor.Add(convertedCollection, convertedData);
data = convertedCollection;
}
return(true);
}