//  Microsoft Windows
//  Copyright (c) Microsoft Corporation. All rights reserved.

cpp_quote("//  Microsoft Windows")
cpp_quote("//  Copyright (c) Microsoft Corporation. All rights reserved.")
cpp_quote("#pragma once")

#ifndef DO_NO_IMPORTS
import "inspectable.idl";
#endif

cpp_quote("#ifdef __cplusplus")

// C++ definition of async status uses enum class syntax, 
// namespace qualified. However, to compile proxies, the C 
// compiler needs to see this as a normal C-style enum. Similarly,
// the IDL compiler needs to see a definition that it understands.
cpp_quote("namespace ABI { namespace Windows { namespace Foundation {")
cpp_quote("enum class AsyncStatus {")
cpp_quote("  Started = 0,")
cpp_quote("  Completed, ")
cpp_quote("  Canceled, ")
cpp_quote("  Error,")
cpp_quote("};")
cpp_quote("} } } // ABI::Windows:::Foundation")

// For compatibility with IDL generated code, the type name must 
// also appear in the global namespace.
cpp_quote("using ABI::Windows::Foundation::AsyncStatus;")

// Promotes the new namespace qualified definition into the global 
// namespace, consistent with COM IDL enum definitions. Since some of 
// these values may collide with other Windows headers, use the 
// _HIDE_GLOBAL_ASYNC_STATUS define to disable this mapping.
cpp_quote("#if !defined(_HIDE_GLOBAL_ASYNC_STATUS) && !defined(__cplusplus_winrt)")
cpp_quote("static const ABI::Windows::Foundation::AsyncStatus Started = AsyncStatus::Started;")
cpp_quote("static const ABI::Windows::Foundation::AsyncStatus Completed = AsyncStatus::Completed;")
cpp_quote("static const ABI::Windows::Foundation::AsyncStatus Canceled = AsyncStatus::Canceled;")
cpp_quote("static const ABI::Windows::Foundation::AsyncStatus Error = AsyncStatus::Error;")
cpp_quote("#endif // _HIDE_GLOBAL_ASYNC_STATUS")

cpp_quote("#else")
// C-style definition, IDL definition: plain enum in global namespace
typedef [v1_enum] enum AsyncStatus
{
    Started = 0,
    Completed, 
    Canceled, 
    Error,
} AsyncStatus;
cpp_quote("#endif // __cplusplus")

// IAsyncInfo
// C++, C & IDL definition, global namespace
[
    object,
    uuid(00000036-0000-0000-C000-000000000046),
    pointer_default(unique)
]
interface IAsyncInfo : IInspectable
{
    // Properties
    [propget] HRESULT Id([out, retval] unsigned __int32 *id);

    // provide a C++ overload for async status that doesn't rely on 
    // the global definition of asyncstatus to support _HIDE_GLOBAL_ASYNC_STATUS
    [propget] HRESULT Status([out, retval] AsyncStatus *status);

    [propget] HRESULT ErrorCode([out,retval] HRESULT *errorCode);
    
    // Methods
    HRESULT Cancel();
    HRESULT Close();
}

// C++ definition, namespace qualified. Bring the global name into the
// ABI::Windows::Foundation namespace. This allows clients to write
// ABI::Windows::Foundation::IAsyncInfo or ::IAsyncInfo or IAsyncInfo
// interchangeably.
cpp_quote("#ifdef __cplusplus")
cpp_quote("namespace ABI { namespace Windows { namespace Foundation {")
cpp_quote("using ::IAsyncInfo;")
cpp_quote("} } } // ABI::Windows:::Foundation")
cpp_quote("#endif // __cplusplus")