RevDoc PasteButton

RevDoc PasteButton.swift

import SwiftUI
import UniformTypeIdentifiers

@available(OSX 10.16, *)
@available(iOS, unavailable)
@available(tvOS, unavailable)
@available(watchOS, unavailable)
struct PasteButtonView: View {
  @State var text = String()
  let utType = UTType.text
  //The declaration above is equivalent to
  //let utType = UTType("public.utf8-plain-text")!
  
  var body: some View {
    VStack {
      Text(text)
      PasteButton(supportedContentTypes: [utType], payloadAction: { array in
        guard let firstItem = array.first else {
          return
        }
        firstItem.loadDataRepresentation(forTypeIdentifier: "public.utf8-plain-text", completionHandler: {
          (data, error) in
          
          guard let data = data else {
            return
          }
          let loadedText = String(decoding: data, as: UTF8.self)
          self.text = loadedText
          
          //This call just shows how to find print the UTI type of any type conforming to NSItemProviderWriting, "public.utf8-plain-text" in this case
          self.getUTITypeString(for: loadedText)
        })
      })
    }
    .frame(width: 200, height: 200)
  }
  func getUTITypeString(for item: Any) {
    if let item = item as? NSItemProviderWriting {
      let provider = NSItemProvider(object: item)
      print(provider)
    }
    else {
      print("This data type cannot be used in an NSItemProvider")
    }
  }
}