/*

Copyright (C) 2017 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

Value transformer to change a CKAsset to an image.

*/

import Foundation

// We use this value transformer to help us bind our table cell view's image to the CKAsset image.

//

class AssetToImageTransformer : ValueTransformer {

    func transformedValueClass() -> AnyClass {

        return NSImage.self

    }

    func allowsReverseTransformation() -> Bool {

        return false

    }

    override func transformedValue(_ value: Any?) -> Any? {

        // Update the photo.

        if value != nil {

            let photo = value as! CloudPhoto

            let imageData = photo.photoImage

            return imageData

        }

        return nil

    }

}