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