1 files changed, 31 insertions, 0 deletions
diff --git a/widget/cocoa/nsMenuParentX.h b/widget/cocoa/nsMenuParentX.h
new file mode 100644
index 0000000000..a1f705631a
--- /dev/null
+++ b/widget/cocoa/nsMenuParentX.h
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsMenuParentX_h_
+#define nsMenuParentX_h_
+
+#include "mozilla/RefPtr.h"
+#include "mozilla/Variant.h"
+
+class nsMenuX;
+class nsMenuBarX;
+class nsMenuItemX;
+
+// A base class for objects that can be the parent of an nsMenuX or nsMenuItemX.
+class nsMenuParentX {
+ public:
+  using MenuChild = mozilla::Variant<RefPtr<nsMenuX>, RefPtr<nsMenuItemX>>;
+
+  // XXXmstange double-check that this is still needed
+  virtual nsMenuBarX* AsMenuBar() { return nullptr; }
+
+  // Called when aChild becomes visible or hidden, so that the parent can insert
+  // or remove the child's native menu item from its NSMenu and update its state
+  // of visible items.
+  virtual void MenuChildChangedVisibility(const MenuChild& aChild,
+                                          bool aIsVisible) = 0;
+};
+
+#endif  // nsMenuParentX_h_