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f52fe75bec
From 5289124d435e3eed280c8a1728b55ab005ac0aae Mon Sep 17 00:00:00 2001 --- dom/nfc/MozNDEFRecord.cpp | 40 ++++++++++++++++++++++++++++++++++++++++ dom/nfc/MozNDEFRecord.h | 3 +++ 2 files changed, 43 insertions(+)
170 lines
4.6 KiB
C++
170 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Copyright © 2013 Deutsche Telekom, Inc. */
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#include "MozNDEFRecord.h"
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#include "mozilla/dom/MozNDEFRecordBinding.h"
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#include "mozilla/HoldDropJSObjects.h"
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#include "nsContentUtils.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_CLASS(MozNDEFRecord)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(MozNDEFRecord)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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tmp->DropData();
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(MozNDEFRecord)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(MozNDEFRecord)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mType)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mId)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mPayload)
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NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(MozNDEFRecord)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(MozNDEFRecord)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MozNDEFRecord)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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void
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MozNDEFRecord::HoldData()
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{
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mozilla::HoldJSObjects(this);
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}
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void
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MozNDEFRecord::DropData()
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{
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if (mType) {
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mType = nullptr;
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}
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if (mId) {
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mId = nullptr;
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}
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if (mPayload) {
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mPayload = nullptr;
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}
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mozilla::DropJSObjects(this);
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}
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/**
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* Validate TNF.
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* See section 3.3 THE NDEF Specification Test Requirements,
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* NDEF specification 1.0
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*/
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/* static */
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bool
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MozNDEFRecord::ValidateTNF(const MozNDEFRecordOptions& aOptions,
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ErrorResult& aRv)
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{
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// * The TNF field MUST have a value between 0x00 and 0x06.
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// * The TNF value MUST NOT be 0x07.
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// These two requirements are already handled by WebIDL bindings.
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// If the TNF value is 0x00 (Empty), the TYPE, ID, and PAYLOAD fields MUST be
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// omitted from the record.
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if ((aOptions.mTnf == TNF::Empty) &&
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(aOptions.mType.WasPassed() || aOptions.mId.WasPassed() ||
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aOptions.mPayload.WasPassed())) {
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NS_WARNING("tnf is empty but type/id/payload is not null.");
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return false;
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}
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// If the TNF value is 0x05 (Unknown) or 0x06(Unchanged), the TYPE field MUST
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// be omitted from the NDEF record.
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if ((aOptions.mTnf == TNF::Unknown || aOptions.mTnf == TNF::Unchanged) &&
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aOptions.mType.WasPassed()) {
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NS_WARNING("tnf is unknown/unchanged but type is not null.");
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return false;
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}
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return true;
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}
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/* static */
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already_AddRefed<MozNDEFRecord>
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MozNDEFRecord::Constructor(const GlobalObject& aGlobal,
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const MozNDEFRecordOptions& aOptions,
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ErrorResult& aRv)
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{
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nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(aGlobal.GetAsSupports());
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if (!win) {
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aRv.Throw(NS_ERROR_FAILURE);
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return nullptr;
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}
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if (!ValidateTNF(aOptions, aRv)) {
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return nullptr;
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}
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nsRefPtr<MozNDEFRecord> ndefrecord = new MozNDEFRecord(aGlobal.Context(),
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win, aOptions);
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if (!ndefrecord) {
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aRv.Throw(NS_ERROR_FAILURE);
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return nullptr;
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}
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return ndefrecord.forget();
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}
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MozNDEFRecord::MozNDEFRecord(JSContext* aCx, nsPIDOMWindow* aWindow,
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const MozNDEFRecordOptions& aOptions)
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{
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mWindow = aWindow; // For GetParentObject()
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mTnf = aOptions.mTnf;
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if (aOptions.mType.WasPassed()) {
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const Uint8Array& type = aOptions.mType.Value();
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type.ComputeLengthAndData();
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mType = Uint8Array::Create(aCx, this, type.Length(), type.Data());
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}
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if (aOptions.mId.WasPassed()) {
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const Uint8Array& id = aOptions.mId.Value();
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id.ComputeLengthAndData();
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mId = Uint8Array::Create(aCx, this, id.Length(), id.Data());
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}
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if (aOptions.mPayload.WasPassed()) {
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const Uint8Array& payload = aOptions.mPayload.Value();
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payload.ComputeLengthAndData();
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mPayload = Uint8Array::Create(aCx, this, payload.Length(), payload.Data());
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}
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SetIsDOMBinding();
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HoldData();
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}
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MozNDEFRecord::~MozNDEFRecord()
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{
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DropData();
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}
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JSObject*
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MozNDEFRecord::WrapObject(JSContext* aCx)
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{
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return MozNDEFRecordBinding::Wrap(aCx, this);
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}
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} // namespace dom
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} // namespace mozilla
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