widget/cocoa/nsMenuParentX.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsMenuParentX_h_
   7 #define nsMenuParentX_h_
   8
   9 #include "mozilla/RefPtr.h"
  10 #include "mozilla/Variant.h"
  11
  12 class nsMenuX;
  13 class nsMenuBarX;
  14 class nsMenuItemX;
  15
  16 // A base class for objects that can be the parent of an nsMenuX or nsMenuItemX.
  17 class nsMenuParentX {
  18  public:
  19   using MenuChild = mozilla::Variant<RefPtr<nsMenuX>, RefPtr<nsMenuItemX>>;
  20
  21   // XXXmstange double-check that this is still needed
  22   virtual nsMenuBarX* AsMenuBar() { return nullptr; }
  23
  24   // Called when aChild becomes visible or hidden, so that the parent can insert
  25   // or remove the child's native menu item from its NSMenu and update its state
  26   // of visible items.
  27   virtual void MenuChildChangedVisibility(const MenuChild& aChild,
  28                                           bool aIsVisible) = 0;
  29 };
  30
  31 #endif  // nsMenuParentX_h_