sing-box-for-apple/ApplicationLibrary/Views/Terminal/TerminalWrapperView.swift

#if canImport(GhosttyTerminal)
    import GhosttyTerminal
    import Library
    import SwiftUI
    #if os(iOS) && !targetEnvironment(macCatalyst)
        import UIKit
    #endif

    @MainActor
    public struct TerminalWrapperView: View {
        @StateObject private var viewModel = TerminalWrapperViewModel()
        private let presentedSession: TailscaleSSHPresentedSession
        @Environment(\.dismiss) private var dismiss
        @Environment(\.openURL) private var openURL

        public init(_ presentedSession: TailscaleSSHPresentedSession) {
            self.presentedSession = presentedSession
        }

        public var body: some View {
            TerminalSessionContentView(
                viewModel: viewModel,
                presentedSession: presentedSession
            )
            .navigationTitle(displayedTitle)
            #if os(iOS)
                .navigationBarTitleDisplayMode(.inline)
                .toolbar {
                    ToolbarItem(placement: .cancellationAction) {
                        Button {
                            dismiss()
                        } label: {
                            Image(systemName: "chevron.backward")
                        }
                    }
                }
                .background(
                    Button(action: { dismiss() }) {}
                        .keyboardShortcut("w", modifiers: .command)
                        .opacity(0)
                        .frame(width: 0, height: 0)
                        .accessibilityHidden(true)
                )
            #endif
                .onAppear {
                    viewModel.onWindowClose = { dismiss() }
                    viewModel.extras.onOpenURL = { urlString, _ in
                        guard let url = URL(string: urlString) else { return }
                        openURL(url)
                    }
                    #if os(iOS) && !targetEnvironment(macCatalyst)
                        viewModel.extras.onRequestTextSelection = { request in
                            presentTerminalSelectionSheet(request: request)
                        }
                    #endif
                    viewModel.start(presentedSession)
                }
                .onDisappear {
                    viewModel.disconnect()
                }
        }

        private var displayedTitle: String {
            TerminalSessionContentView.displayTitle(
                phase: viewModel.phase,
                extrasTitle: viewModel.extras.title,
                peerHostName: presentedSession.peerHostName
            )
        }

        #if os(iOS) && !targetEnvironment(macCatalyst)
            @MainActor
            private func presentTerminalSelectionSheet(request: TerminalTextSelectionRequest) {
                guard let presenter = topmostViewController() else { return }
                let selectionVC = TailsshTerminalSelectionViewController(
                    text: request.text,
                    anchorRange: request.anchorRange
                )
                selectionVC.onOpenURL = { url in
                    openURL(url)
                }
                let nav = UINavigationController(rootViewController: selectionVC)
                nav.modalPresentationStyle = .pageSheet
                if let sheet = nav.sheetPresentationController {
                    sheet.detents = [.medium(), .large()]
                    sheet.prefersGrabberVisible = true
                }
                presenter.present(nav, animated: true)
            }

            @MainActor
            private func topmostViewController() -> UIViewController? {
                let scene = UIApplication.shared.connectedScenes
                    .compactMap { $0 as? UIWindowScene }
                    .first { $0.activationState == .foregroundActive }
                    ?? UIApplication.shared.connectedScenes
                    .compactMap { $0 as? UIWindowScene }
                    .first
                guard let root = scene?.windows.first(where: { $0.isKeyWindow })?.rootViewController
                    ?? scene?.windows.first?.rootViewController
                else { return nil }
                var top = root
                while let presented = top.presentedViewController {
                    top = presented
                }
                return top
            }
        #endif
    }
#endif