SwiftUI如何在macOS上使CoreData列表可选和双击

import CoreData

class ItemEntity: NSManagedObject {
    @NSManaged var name: String
    // 添加其他属性
}

import CoreData

class ItemController: NSObject, ObservableObject, NSFetchedResultsControllerDelegate {
    @Published var items: [ItemEntity] = []
    
    private let context = PersistenceController.shared.container.viewContext
    private var fetchedResultsController: NSFetchedResultsController<ItemEntity>?
    
    override init() {
        super.init()
        
        let fetchRequest: NSFetchRequest<ItemEntity> = ItemEntity.fetchRequest()
        let sortDescriptor = NSSortDescriptor(keyPath: \ItemEntity.name, ascending: true)
        fetchRequest.sortDescriptors = [sortDescriptor]
        
        fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: context, sectionNameKeyPath: nil, cacheName: nil)
        fetchedResultsController?.delegate = self
        
        do {
            try fetchedResultsController?.performFetch()
            items = fetchedResultsController?.fetchedObjects ?? []
        } catch {
            print("Failed to fetch items: \(error)")
        }
    }
    
    func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
        if let fetchedObjects = controller.fetchedObjects as? [ItemEntity] {
            items = fetchedObjects
        }
    }
    
    func addItem(name: String) {
        let newItem = ItemEntity(context: context)
        newItem.name = name
        // 设置其他属性
        
        PersistenceController.shared.saveContext()
    }
    
    func deleteItem(at indexSet: IndexSet) {
        indexSet.forEach { index in
            let item = items[index]
            context.delete(item)
        }
        
        PersistenceController.shared.saveContext()
    }
}

@ObservedObject var itemController = ItemController()

List {
    ForEach(itemController.items) { item in
        Text(item.name)
            .onTapGesture(count: 2) {
                // 处理双击事件
            }
    }
}