first commit

node_modules/expo-router/ios/LinkPreview/LinkPreviewNativeActionView.swift

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+import ExpoModulesCore
+
+class LinkPreviewNativeActionView: RouterViewWithLogger, LinkPreviewMenuUpdatable {
+  var identifier: String = ""
+  // MARK: - Shared props
+  @NativeActionProp(updateAction: true, updateMenu: true) var title: String = ""
+  @NativeActionProp(updateMenu: true) var label: String?
+  @NativeActionProp(updateAction: true, updateMenu: true) var icon: String?
+  @NativeActionProp(updateAction: true, updateMenu: true) var xcassetName: String?
+  var customImage: SharedRef<UIImage>? {
+    didSet {
+      updateUiAction()
+      updateMenu()
+    }
+  }
+  @NativeActionProp(updateAction: true, updateMenu: true) var imageRenderingMode: ImageRenderingMode?
+  @NativeActionProp(updateAction: true, updateMenu: true) var destructive: Bool?
+  @NativeActionProp(updateAction: true, updateMenu: true) var disabled: Bool = false
+
+  // MARK: - Action only props
+  @NativeActionProp(updateAction: true) var isOn: Bool?
+  @NativeActionProp(updateAction: true) var keepPresented: Bool?
+  @NativeActionProp(updateAction: true) var discoverabilityLabel: String?
+  @NativeActionProp(updateAction: true, updateMenu: true) var subtitle: String?
+
+  // MARK: - Menu only props
+  @NativeActionProp(updateMenu: true) var singleSelection: Bool = false
+  @NativeActionProp(updateMenu: true) var displayAsPalette: Bool = false
+  @NativeActionProp(updateMenu: true) var displayInline: Bool = false
+  @NativeActionProp(updateMenu: true) var preferredElementSize: MenuElementSize?
+
+  // MARK: - UIBarButtonItem props
+  @NativeActionProp(updateAction: true, updateMenu: true) var routerHidden: Bool = false
+  @NativeActionProp(updateMenu: true) var titleStyle: TitleStyle?
+  @NativeActionProp(updateMenu: true) var sharesBackground: Bool?
+  @NativeActionProp(updateMenu: true) var hidesSharedBackground: Bool?
+  @NativeActionProp(updateAction: true, updateMenu: true) var customTintColor: UIColor?
+  @NativeActionProp(updateMenu: true) var barButtonItemStyle: UIBarButtonItem.Style?
+  @NativeActionProp(updateMenu: true) var subActions: [LinkPreviewNativeActionView] = []
+  @NativeActionProp(updateMenu: true) var accessibilityLabelForMenu: String?
+  @NativeActionProp(updateMenu: true) var accessibilityHintForMenu: String?
+
+  // MARK: - Events
+  let onSelected = EventDispatcher()
+
+  // MARK: - Native API
+  weak var parentMenuUpdatable: LinkPreviewMenuUpdatable?
+
+  private var baseUiAction: UIAction
+  private var menuAction: UIMenu
+
+  var isMenuAction: Bool {
+    return !subActions.isEmpty
+  }
+
+  var uiAction: UIMenuElement {
+    isMenuAction ? menuAction : baseUiAction
+  }
+
+  var image: UIImage? {
+    if let customImage = customImage {
+      let renderingMode: UIImage.RenderingMode = imageRenderingMode == .template ? .alwaysTemplate : .alwaysOriginal
+      return customImage.ref.withRenderingMode(renderingMode)
+    }
+    if let xcassetName = xcassetName {
+      let renderingMode: UIImage.RenderingMode = imageRenderingMode == .template ? .alwaysTemplate : .alwaysOriginal
+      return UIImage(named: xcassetName)?.withRenderingMode(renderingMode)
+    }
+    if let icon = icon {
+      return UIImage(systemName: icon)
+    }
+    return nil
+  }
+
+  required init(appContext: AppContext? = nil) {
+    baseUiAction = UIAction(title: "", handler: { _ in })
+    menuAction = UIMenu(title: "", image: nil, options: [], children: [])
+    super.init(appContext: appContext)
+    clipsToBounds = true
+    baseUiAction = UIAction(title: "", handler: { _ in self.onSelected() })
+  }
+
+  func updateMenu() {
+    let subActions = subActions.map { subAction in
+      subAction.uiAction
+    }
+    var options: UIMenu.Options = []
+    if #available(iOS 17.0, *) {
+      if displayAsPalette {
+        options.insert(.displayAsPalette)
+      }
+    }
+    if singleSelection {
+      options.insert(.singleSelection)
+    }
+    if displayInline {
+      options.insert(.displayInline)
+    }
+    if destructive == true {
+      options.insert(.destructive)
+    }
+
+    menuAction = UIMenu(
+      title: title,
+      image: image,
+      options: options,
+      children: subActions
+    )
+
+    if let subtitle = subtitle {
+      menuAction.subtitle = subtitle
+    }
+
+    if #available(iOS 16.0, *) {
+      if let preferredElementSize = preferredElementSize {
+        menuAction.preferredElementSize = preferredElementSize.toUIMenuElementSize()
+      }
+    }
+
+    parentMenuUpdatable?.updateMenu()
+  }
+
+  func updateUiAction() {
+    var attributes: UIMenuElement.Attributes = []
+    if destructive == true { attributes.insert(.destructive) }
+    if disabled == true { attributes.insert(.disabled) }
+    if routerHidden {
+      attributes.insert(.hidden)
+    }
+
+    if #available(iOS 16.0, *) {
+      if keepPresented == true { attributes.insert(.keepsMenuPresented) }
+    }
+
+    baseUiAction.title = title
+    baseUiAction.image = image
+    baseUiAction.attributes = attributes
+    baseUiAction.state = isOn == true ? .on : .off
+
+    if let subtitle = subtitle {
+      baseUiAction.subtitle = subtitle
+    }
+    if let label = discoverabilityLabel {
+      baseUiAction.discoverabilityTitle = label
+    }
+
+    parentMenuUpdatable?.updateMenu()
+  }
+
+  override func mountChildComponentView(_ childComponentView: UIView, index: Int) {
+    if let childActionView = childComponentView as? LinkPreviewNativeActionView {
+      subActions.insert(childActionView, at: index)
+      childActionView.parentMenuUpdatable = self
+    } else {
+      logger?.warn(
+        "[expo-router] Unknown child component view (\(childComponentView)) mounted to NativeLinkPreviewActionView. This is most likely a bug in expo-router."
+      )
+    }
+  }
+
+  override func unmountChildComponentView(_ child: UIView, index: Int) {
+    if let childActionView = child as? LinkPreviewNativeActionView {
+      subActions.removeAll(where: { $0 == childActionView })
+    } else {
+      logger?.warn(
+        "ExpoRouter: Unknown child component view (\(child)) unmounted from NativeLinkPreviewActionView. This is most likely a bug in expo-router."
+      )
+    }
+  }
+
+  @propertyWrapper
+  struct NativeActionProp<Value: Equatable> {
+    var value: Value
+    let updateAction: Bool
+    let updateMenu: Bool
+
+    init(wrappedValue: Value, updateAction: Bool = false, updateMenu: Bool = false) {
+      self.value = wrappedValue
+      self.updateAction = updateAction
+      self.updateMenu = updateMenu
+    }
+
+    static subscript<EnclosingSelf: LinkPreviewNativeActionView>(
+      _enclosingInstance instance: EnclosingSelf,
+      wrapped wrappedKeyPath: ReferenceWritableKeyPath<EnclosingSelf, Value>,
+      storage storageKeyPath: ReferenceWritableKeyPath<EnclosingSelf, NativeActionProp<Value>>
+    ) -> Value {
+      get {
+        instance[keyPath: storageKeyPath].value
+      }
+      set {
+        let oldValue = instance[keyPath: storageKeyPath].value
+        if oldValue != newValue {
+          instance[keyPath: storageKeyPath].value = newValue
+          if instance[keyPath: storageKeyPath].updateAction {
+            instance.updateUiAction()
+          }
+          if instance[keyPath: storageKeyPath].updateMenu {
+            instance.updateMenu()
+          }
+        }
+      }
+    }
+
+    var wrappedValue: Value {
+      get { value }
+      set { value = newValue }
+    }
+  }
+}
+
+// Needed to allow optional properties without default `= nil` to avoid repetition
+extension LinkPreviewNativeActionView.NativeActionProp where Value: ExpressibleByNilLiteral {
+  init(updateAction: Bool = false, updateMenu: Bool = false) {
+    self.value = nil
+    self.updateAction = updateAction
+    self.updateMenu = updateMenu
+  }
+}
+
+protocol LinkPreviewMenuUpdatable: AnyObject {
+  func updateMenu()
+}