gecko-dev/dom/nfc/TagUtils.cpp

47 строки
1.2 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "TagUtils.h"
#include "mozilla/dom/Promise.h"
namespace mozilla {
namespace dom {
namespace nfc {
bool
TagUtils::IsTechSupported(const MozNFCTag& aTag,
const NFCTechType& aTechnology)
{
ErrorResult rv;
Nullable<nsTArray<NFCTechType>> techList;
aTag.GetTechList(techList, rv);
ENSURE_SUCCESS(rv, false);
return !techList.IsNull() && techList.Value().Contains(aTechnology);
}
already_AddRefed<Promise>
TagUtils::Transceive(MozNFCTag* aTag,
const NFCTechType& aTechnology,
const Uint8Array& aCommand,
ErrorResult& aRv)
{
ErrorResult rv;
aCommand.ComputeLengthAndData();
RefPtr<Promise> promise = aTag->Transceive(aTechnology, aCommand, rv);
if (rv.Failed()) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return promise.forget();
}
} // namespace nfc
} // namespace dom
} // namespace mozilla