Add a macOS copy alert for code blocks to match iOS feedback.

Example/Example.xcodeproj/project.pbxproj

@@ -270,7 +270,7 @@
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = 964G86XT2P;
+				DEVELOPMENT_TEAM = RAY7K7N8E4;
 				ENABLE_APP_SANDBOX = YES;
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
@@ -315,7 +315,7 @@
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = 964G86XT2P;
+				DEVELOPMENT_TEAM = RAY7K7N8E4;
 				ENABLE_APP_SANDBOX = YES;
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;

Sources/MarkdownView/Components/CodeView/CodeView.swift

@@ -46,6 +46,7 @@ import Litext
 
         private let callerIdentifier = UUID()
         private var currentTaskIdentifier: UUID?
+        private weak var copyAlertController: UIAlertController?
 
         lazy var barView: UIView = .init()
         lazy var scrollView: UIScrollView = .init()
@@ -100,6 +101,7 @@ import Litext
             UIPasteboard.general.string = content
             #if !os(visionOS)
                 UINotificationFeedbackGenerator().notificationOccurred(.success)
+                presentCopyAlert()
             #endif
         }
 
@@ -110,6 +112,41 @@ import Litext
             previewAction?(language, textView.attributedText)
         }
 
+        private func presentCopyAlert() {
+            guard let rootViewController = window?.rootViewController else { return }
+            guard let controller = topViewController(from: rootViewController) else { return }
+            if controller is UIAlertController { return }
+            copyAlertController?.dismiss(animated: false)
+
+            let alert = UIAlertController(
+                title: NSLocalizedString("Copied", comment: ""),
+                message: nil,
+                preferredStyle: .alert
+            )
+            copyAlertController = alert
+            controller.present(alert, animated: true)
+
+            DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) { [weak self, weak alert] in
+                guard let alert, alert.presentingViewController != nil else { return }
+                alert.dismiss(animated: true)
+                self?.copyAlertController = nil
+            }
+        }
+
+        private func topViewController(from controller: UIViewController?) -> UIViewController? {
+            guard let controller else { return nil }
+            if let navigationController = controller as? UINavigationController {
+                return topViewController(from: navigationController.visibleViewController)
+            }
+            if let tabBarController = controller as? UITabBarController {
+                return topViewController(from: tabBarController.selectedViewController)
+            }
+            if let presented = controller.presentedViewController {
+                return topViewController(from: presented)
+            }
+            return controller
+        }
+
         func updateLineNumberView() {
             let font = theme.fonts.code
             lineNumberView.textColor = theme.colors.body.withAlphaComponent(0.5)
@@ -176,6 +213,7 @@ import Litext
 
         private let callerIdentifier = UUID()
         private var currentTaskIdentifier: UUID?
+        private weak var copyAlertWindow: NSWindow?
 
         lazy var barView: NSView = .init()
         lazy var scrollView: NSScrollView = {
@@ -248,12 +286,39 @@ import Litext
             let pasteboard = NSPasteboard.general
             pasteboard.clearContents()
             pasteboard.setString(content, forType: .string)
+            presentCopyAlert()
         }
 
         @objc func handlePreview(_: Any?) {
             previewAction?(language, textView.attributedText)
         }
 
+        private func presentCopyAlert() {
+            guard let hostWindow = window else { return }
+            if let sheetWindow = copyAlertWindow {
+                hostWindow.endSheet(sheetWindow)
+                copyAlertWindow = nil
+            }
+
+            let alert = NSAlert()
+            alert.messageText = NSLocalizedString("Copied", comment: "")
+            alert.informativeText = ""
+            alert.alertStyle = .informational
+
+            let alertWindow = alert.window
+            copyAlertWindow = alertWindow
+
+            alert.beginSheetModal(for: hostWindow) { [weak self] _ in
+                self?.copyAlertWindow = nil
+            }
+
+            DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) { [weak self, weak hostWindow, weak alertWindow] in
+                guard let hostWindow, let alertWindow else { return }
+                hostWindow.endSheet(alertWindow)
+                self?.copyAlertWindow = nil
+            }
+        }
+
         func updateLineNumberView() {
             let font = theme.fonts.code
             lineNumberView.textColor = theme.colors.body.withAlphaComponent(0.5)

Sources/MarkdownView/Resources/Localizable.xcstrings

@@ -1,7 +1,9 @@
 {
   "sourceLanguage" : "en",
   "strings" : {
+    "Copied" : {
 
+    }
   },
   "version" : "1.0"
 }