SwiftUI:如何从macOS上的邮件拖放电子邮件

struct ContentView: View {
    @State private var emails: [String] = []

    var body: some View {
        VStack {
            Text("已拖放的电子邮件：")
                .font(.headline)
            
            List(emails, id: \.self) { email in
                Text(email)
            }
            .onDrop(of: [.text], isTargeted: nil) { providers in
                for provider in providers {
                    provider.loadItem(forTypeIdentifier: "public.plain-text", options: nil) { item, error in
                        if let data = item as? Data, let text = String(data: data, encoding: .utf8) {
                            DispatchQueue.main.async {
                                self.emails.append(text)
                            }
                        }
                    }
                }
                return true
            }
        }
    }
}