SwiftUI using NSSharingServicePicker in MacOS - swift

Question

I am trying to use a Share function inside my MacOS app in SwiftUI. I am having a URL to a file, which I want to share. It can be images/ documents and much more.
I found NSSharingServicePicker for MacOS and would like to use it. However, I am struggeling to use it in SwiftUI.
Following the documentation, I am creating it like this:
let shareItems = [...]
let sharingPicker : NSSharingServicePicker = NSSharingServicePicker.init(items: shareItems as [Any])
sharingPicker.show(relativeTo: NSZeroRect, of:shareView, preferredEdge: .minY)
My problem is in that show() method. I need to set a NSRect, where I can use NSZeroRect.. but I am struggeling with of: parameter. It requires a NSView. How can I convert my current view as NSView and use it that way. Or can I use my Button as NSView(). I am struggling with that approach.
Another option would be to use a NSViewRepresentable. But should I just create a NSView and use it for that method.

Answer 1

Here is minimal working demo example
struct SharingsPicker: NSViewRepresentable {
#Binding var isPresented: Bool
var sharingItems: [Any] = []
func makeNSView(context: Context) -> NSView {
let view = NSView()
return view
}
func updateNSView(_ nsView: NSView, context: Context) {
if isPresented {
let picker = NSSharingServicePicker(items: sharingItems)
picker.delegate = context.coordinator
// !! MUST BE CALLED IN ASYNC, otherwise blocks update
DispatchQueue.main.async {
picker.show(relativeTo: .zero, of: nsView, preferredEdge: .minY)
}
}
}
func makeCoordinator() -> Coordinator {
Coordinator(owner: self)
}
class Coordinator: NSObject, NSSharingServicePickerDelegate {
let owner: SharingsPicker
init(owner: SharingsPicker) {
self.owner = owner
}
func sharingServicePicker(_ sharingServicePicker: NSSharingServicePicker, didChoose service: NSSharingService?) {
// do here whatever more needed here with selected service
sharingServicePicker.delegate = nil // << cleanup
self.owner.isPresented = false // << dismiss
}
}
}
Demo of usage:
struct TestSharingService: View {
#State private var showPicker = false
var body: some View {
Button("Share") {
self.showPicker = true
}
.background(SharingsPicker(isPresented: $showPicker, sharingItems: ["Message"]))
}
}

Answer 2

Another option without using NSViewRepresentable is:
extension NSSharingService {
static func submenu(text: String) -> some View {
return Menu(
content: {
ForEach(items, id: \.title) { item in
Button(action: { item.perform(withItems: [text]) }) {
Image(nsImage: item.image)
Text(item.title)
}
}
},
label: {
Image(systemName: "square.and.arrow.up")
}
)
}
}
You lose things like the "more" menu item or recent recipients. But in my opinion it's more than enough, simple and pure SwiftUI.