Select file or directory in SwiftUI in an AppKit App [duplicate]

Question

How can I display a file dialogue in SwiftUI to choose a directory or file.

I think using a NSViewRepresentable to wrap a NSOpenPanel will not work, as it expects a NSView not a NSPanel.

Any alternative ideas, tips or links? Everything I found was about UIKit.

Answer 1

import SwiftUI

struct FolderSelector: View {
    
    var body: some View {
        Button("Choose Folder") {
            self.selectFolder()
        }
    }
    
    func selectFolder() {
        
        let folderChooserPoint = CGPoint(x: 0, y: 0)
        let folderChooserSize = CGSize(width: 500, height: 600)
        let folderChooserRectangle = CGRect(origin: folderChooserPoint, size: folderChooserSize)
        let folderPicker = NSOpenPanel(contentRect: folderChooserRectangle, styleMask: .utilityWindow, backing: .buffered, defer: true)
        
        folderPicker.canChooseDirectories = true
        folderPicker.canChooseFiles = true
        folderPicker.allowsMultipleSelection = true
        folderPicker.canDownloadUbiquitousContents = true
        folderPicker.canResolveUbiquitousConflicts = true
        
        folderPicker.begin { response in
            
            if response == .OK {
                let pickedFolders = folderPicker.urls
                
                self.selectedFolder.getFileList(at: pickedFolders)
            }
        }
    }
}