macos: confirm on quit

macos/Sources/ContentView.swift

@@ -0,0 +1,48 @@
+import SwiftUI
+import GhosttyKit
+
+struct ContentView: View {
+    let ghostty: Ghostty.AppState
+    
+    @EnvironmentObject private var appDelegate: AppDelegate
+    
+    var body: some View {
+        switch ghostty.readiness {
+        case .loading:
+            Text("Loading")
+                .onChange(of: appDelegate.confirmQuit) { value in
+                    guard value else { return }
+                    NSApplication.shared.reply(toApplicationShouldTerminate: true)
+                }
+        case .error:
+            ErrorView()
+                .onChange(of: appDelegate.confirmQuit) { value in
+                    guard value else { return }
+                    NSApplication.shared.reply(toApplicationShouldTerminate: true)
+                }
+        case .ready:
+            Ghostty.TerminalSplit(onClose: Self.closeWindow)
+                .ghosttyApp(ghostty.app!)
+                .confirmationDialog(
+                    "Quit Ghostty?",
+                    isPresented: $appDelegate.confirmQuit) {
+                        Button("Close Ghostty", role: .destructive) {
+                            NSApplication.shared.reply(toApplicationShouldTerminate: true)
+                        }
+                        .keyboardShortcut(.defaultAction)
+                        
+                        Button("Cancel", role: .cancel) {
+                            NSApplication.shared.reply(toApplicationShouldTerminate: false)
+                        }
+                        .keyboardShortcut(.cancelAction)
+                    } message: {
+                        Text("All terminal sessions will be terminated.")
+                    }
+        }
+    }
+    
+    static func closeWindow() {
+        guard let currentWindow = NSApp.keyWindow else { return }
+        currentWindow.close()
+    }
+}