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+/* -*- 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 mozilla_a11y_MsaaRootAccessible_h__
+#define mozilla_a11y_MsaaRootAccessible_h__
+
+#include "mozilla/mscom/Aggregation.h"
+#include "MsaaDocAccessible.h"
+
+namespace mozilla {
+
+namespace a11y {
+
+class MsaaRootAccessible : public MsaaDocAccessible {
+ public:
+ explicit MsaaRootAccessible(Accessible* aAcc)
+ : MsaaDocAccessible(aAcc), mOuter(&mInternalUnknown) {}
+
+ /**
+ * This method enables a RootAccessibleWrap to be wrapped by a
+ * LazyInstantiator.
+ *
+ * @param aOuter The IUnknown of the object that is wrapping this
+ * RootAccessibleWrap, or nullptr to unwrap the aOuter from
+ * a previous call.
+ * @return This objects own IUnknown (as opposed to aOuter's IUnknown).
+ */
+ already_AddRefed<IUnknown> Aggregate(IUnknown* aOuter);
+
+ /**
+ * @return This object's own IUnknown, as opposed to its wrapper's IUnknown
+ * which is what would be returned by QueryInterface(IID_IUnknown).
+ */
+ already_AddRefed<IUnknown> GetInternalUnknown();
+
+ private:
+ // DECLARE_AGGREGATABLE declares the internal IUnknown methods as well as
+ // mInternalUnknown.
+ DECLARE_AGGREGATABLE(MsaaRootAccessible);
+ IUnknown* mOuter;
+
+ RootAccessible* RootAcc();
+};
+
+} // namespace a11y
+} // namespace mozilla
+
+#endif