EditMenu for SwiftUI

EditMenu.swift

//
//  EditMenu.swift
//  CalcApp
//
//  Created by iya on 2023/6/9.
//  Copyright © 2023 wayne. All rights reserved.
//

import SwiftUI
import UIKit

extension View {
    
    func editMenu(
        @ArrayBuilder<UIAction> _ actions: @escaping () -> [UIAction],
        onPresent: (() -> Void)? = nil,
        onDismiss: (() -> Void)? = nil
    ) -> some View {
        self.overlay {
            EditMenu(
                content: self,
                actions: actions,
                onPresent: onPresent,
                onDismiss: onDismiss)
            .frame(maxWidth: .infinity, maxHeight: .infinity)
        }
    }
}

fileprivate struct EditMenu<Content: View>: UIViewRepresentable {
    
    let content: Content
    let actions: () -> [UIAction]
    
    let onPresent: (() -> Void)?
    let onDismiss: (() -> Void)?
    
    typealias UIViewType = UIView
    
    func makeUIView(context: Context) -> UIView {
        if let interaction = context.coordinator.interaction {
            context.coordinator.uiView.addInteraction(interaction)
        }
        
        let longPress =
        UILongPressGestureRecognizer(target: context.coordinator, action: #selector(Coordinator.handleLongPress(_:)))
        context.coordinator.uiView.addGestureRecognizer(longPress)
        
        return context.coordinator.uiView
    }
    
    func updateUIView(_ uiView: UIView, context: Context) {
        
    }
    
    func makeCoordinator() -> Coordinator {
        let coordinator = Coordinator(self)
        coordinator.interaction = UIEditMenuInteraction(delegate: coordinator)
        return coordinator
    }
    
    class Coordinator: NSObject, UIEditMenuInteractionDelegate {
        
        let editMenu: EditMenu
        
        let uiView = UIView()
        
        var interaction: UIEditMenuInteraction?
        
        private var isPresent = false
        
        deinit {
            print("\(#function)")
        }
        
        init(_ editMenu: EditMenu) {
            self.editMenu = editMenu
        }
        
        @objc func handleLongPress(_ gestureRecognizer: UILongPressGestureRecognizer) {
            guard isPresent == false, gestureRecognizer.state == .began else { return }
            
            let point = CGPoint(x: uiView.bounds.midX, y: 0)
            let configuration = UIEditMenuConfiguration(
                identifier: "EditMenuInteractionIdentifier",
                sourcePoint: point
            )
            interaction?.presentEditMenu(with: configuration)
            UIImpactFeedbackGenerator(style: .light).impactOccurred()
        }
        
        func editMenuInteraction(_ interaction: UIEditMenuInteraction, menuFor configuration: UIEditMenuConfiguration, suggestedActions: [UIMenuElement]) -> UIMenu? {
            // var actions = suggestedActions

            let customMenu = UIMenu(options: .displayInline, children: editMenu.actions())
            // actions.append(customMenu)
            
            // return UIMenu(children: actions) // For Custom and Suggested Menu
            return UIMenu(children: customMenu.children) // For Custom Menu Only
        }
        
        func editMenuInteraction(_ interaction: UIEditMenuInteraction, willPresentMenuFor configuration: UIEditMenuConfiguration, animator: UIEditMenuInteractionAnimating) {
            editMenu.onPresent?()
            isPresent = true
        }
        
        func editMenuInteraction(_ interaction: UIEditMenuInteraction, willDismissMenuFor configuration: UIEditMenuConfiguration, animator: UIEditMenuInteractionAnimating) {
            editMenu.onDismiss?()
            isPresent = false
        }
    }
}

here is a preview:

import SwiftUI

struct EditMenu_Previews: PreviewProvider {
   static var previews: some View {
      Text("Hello, World!")
         .editMenu({
            return [
               UIAction(title: "Action 1", image: UIImage(systemName: "1.circle"), handler: { _ in
                  print("Action 1 selected")
               }),
               UIAction(title: "Action 2", image: UIImage(systemName: "2.circle"), handler: { _ in
                  print("Action 2 selected")
               })
            ]
         }, onPresent: {
            print("Menu presented")
         }, onDismiss: {
            print("Menu dismissed")
         })
         .padding()
         .previewLayout(.sizeThatFits)
   }
}