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

#if canImport(GhosttyTerminal)
    import GhosttyTerminal
    import SwiftUI

    #if canImport(AppKit)
        import AppKit
    #elseif canImport(UIKit)
        import UIKit
    #endif

    struct TailsshTerminalSurfaceView: View {
        let state: TerminalViewState
        let extras: TailsshTerminalExtras
        var isActive: Bool = true

        @Environment(\.colorScheme) private var colorScheme

        var body: some View {
            Representable(state: state, extras: extras, isActive: isActive)
                .onChange(of: colorScheme) { newScheme in
                    state.adopt(colorScheme: newScheme)
                }
                .onAppear {
                    state.adopt(colorScheme: colorScheme)
                }
        }

        #if canImport(AppKit)
            private struct Representable: NSViewRepresentable {
                let state: TerminalViewState
                let extras: TailsshTerminalExtras
                var isActive: Bool = true

                func makeNSView(context _: Context) -> AppTerminalView {
                    let view = AppTerminalView(frame: .zero)
                    view.controller = state.controller
                    view.configuration = state.configuration
                    view.delegate = extras
                    return view
                }

                func updateNSView(_ view: AppTerminalView, context _: Context) {
                    if view.controller !== state.controller {
                        view.controller = state.controller
                    }
                    view.configuration = state.configuration
                    if view.delegate !== extras {
                        view.delegate = extras
                    }
                }
            }

        #elseif canImport(UIKit)
            private struct Representable: UIViewRepresentable {
                let state: TerminalViewState
                let extras: TailsshTerminalExtras
                var isActive: Bool = true

                func makeUIView(context _: Context) -> UITerminalView {
                    let view = UITerminalView(frame: .zero)
                    view.controller = state.controller
                    view.configuration = state.configuration
                    view.delegate = extras
                    return view
                }

                func updateUIView(_ view: UITerminalView, context _: Context) {
                    if view.controller !== state.controller {
                        view.controller = state.controller
                    }
                    view.configuration = state.configuration
                    if view.delegate !== extras {
                        view.delegate = extras
                    }
                    if isActive, !view.isFirstResponder {
                        view.becomeFirstResponder()
                    }
                }
            }
        #endif
    }
#endif