blob: 7fadfb267f744040d9a52eaa05d670c0595cab5d [file] [log] [blame]
// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_WIN_REFERENCE_H_
#define BASE_WIN_REFERENCE_H_
#include <windows.foundation.collections.h>
#include <wrl/implements.h>
#include <type_traits>
#include <utility>
#include "base/macros.h"
namespace base {
namespace win {
// Implementation of the UWP's IReference interface.
template <typename T>
class Reference
: public Microsoft::WRL::RuntimeClass<
Microsoft::WRL::RuntimeClassFlags<
Microsoft::WRL::WinRt | Microsoft::WRL::InhibitRoOriginateError>,
ABI::Windows::Foundation::IReference<T>> {
public:
using AbiT = typename ABI::Windows::Foundation::Internal::GetAbiType<
typename ABI::Windows::Foundation::IReference<T>::T_complex>::type;
explicit Reference(const AbiT& value) : value_(value) {}
explicit Reference(AbiT&& value) : value_(std::move(value)) {}
// ABI::Windows::Foundation::IReference:
IFACEMETHODIMP get_Value(AbiT* value) override {
*value = value_;
return S_OK;
}
private:
~Reference() = default;
AbiT value_;
DISALLOW_COPY_AND_ASSIGN(Reference);
};
} // namespace win
} // namespace base
#endif // BASE_WIN_REFERENCE_H_