I have an AppKit app written mostly in Objective-C. I'm trying to convert my NSOutlineView to a SwiftUI OutlineGroup. Right now I'm just using List{} because I can't get OutlineGroup to work with CoreData.
But when I display my list of items in the sidebar, I can't select any items. I can click on them of course, but the row selection highlighting doesn't work at all.
I think maybe this might have something to do with the fact that my SwiftUI view is embedded within an NSHostingView.
I've setup my NSHostingView like this:
import Cocoa
import SwiftUI
@objc class FormsListHostingController: NSViewController {
public var viewModel : FormsListUIView.ViewModel?
var formsListView : FormsListUIView?
@objc public var databaseDocument : TFDatabaseDocument?
override func viewDidLoad() {
super.viewDidLoad()
var hostingView : NSHostingView<FormsListUIView>?
if let context = self.databaseDocument?.dataAccessManager?.persistentContainer.viewContext {
let viewModel = FormsListUIView.ViewModel(managedObjectContext: context)
let contentView : FormsListUIView = FormsListUIView(viewModel: viewModel)
hostingView = NSHostingView(rootView: contentView)
self.view = hostingView!
}
}
}
and my SwiftUI view is setup like this:
struct FormsListUIView: View {
@Environment(\.managedObjectContext) var context
@ObservedObject var viewModel: ViewModel
@State private var selection: CDForm? = nil
@State private var isSelected : Bool = false
var body: some View {
List(selection: self.$selection) {
ForEach(viewModel.categories, id: \.uuid) { (category : CDCategory) in
Section(header: Text(category.name ?? "").font(.headline)) {
ForEach(Array(category.forms as! Set<CDForm>), id: \.uuid) { (form : CDForm) in
FormRow(form: form).onTapGesture {
self.selection = form
isSelected.toggle()
}
}
}
}
}
.listStyle(SidebarListStyle())
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
}
Any ideas why the row selection doesn't show? I'm suspecting it's a problem with showing a SwiftUI view within an NSHostingView.
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