The Tor Browser: dom/nfc/MozNDEFRecord.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim:set ts=2 sw=2 sts=2 et cindent: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 /* Copyright © 2013 Deutsche Telekom, Inc. */

     9 #include "MozNDEFRecord.h"

    10 #include "mozilla/dom/MozNDEFRecordBinding.h"

    11 #include "mozilla/HoldDropJSObjects.h"

    12 #include "nsContentUtils.h"

    15 namespace mozilla {

    16 namespace dom {

    19 NS_IMPL_CYCLE_COLLECTION_CLASS(MozNDEFRecord)

    21 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(MozNDEFRecord)

    22   NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow)

    23   NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER

    24   tmp->DropData();

    25 NS_IMPL_CYCLE_COLLECTION_UNLINK_END

    27 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(MozNDEFRecord)

    28   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)

    29   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS

    30 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

    32 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(MozNDEFRecord)

    33   NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mType)

    34   NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mId)

    35   NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mPayload)

    36   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER

    37 NS_IMPL_CYCLE_COLLECTION_TRACE_END

    39 NS_IMPL_CYCLE_COLLECTING_ADDREF(MozNDEFRecord)

    40 NS_IMPL_CYCLE_COLLECTING_RELEASE(MozNDEFRecord)

    41 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MozNDEFRecord)

    42   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY

    43   NS_INTERFACE_MAP_ENTRY(nsISupports)

    44 NS_INTERFACE_MAP_END

    46 void

    47 MozNDEFRecord::HoldData()

    48 {

    49   mozilla::HoldJSObjects(this);

    50 }

    52 void

    53 MozNDEFRecord::DropData()

    54 {

    55   if (mType) {

    56     mType = nullptr;

    57   }

    58   if (mId) {

    59     mId = nullptr;

    60   }

    61   if (mPayload) {

    62     mPayload = nullptr;

    63   }

    64   mozilla::DropJSObjects(this);

    65 }

    67 /* static */

    68 already_AddRefed<MozNDEFRecord>

    69 MozNDEFRecord::Constructor(const GlobalObject& aGlobal,

    70                            uint8_t aTnf,

    71                            const Optional<Uint8Array>& aType,

    72                            const Optional<Uint8Array>& aId,

    73                            const Optional<Uint8Array>& aPayload,

    74                            ErrorResult& aRv)

    75 {

    76   nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(aGlobal.GetAsSupports());

    77   if (!win) {

    78     aRv.Throw(NS_ERROR_FAILURE);

    79     return nullptr;

    80   }

    82   nsRefPtr<MozNDEFRecord> ndefrecord = new MozNDEFRecord(aGlobal.GetContext(),

    83                                                          win, aTnf, aType, aId,

    84                                                          aPayload);

    85   if (!ndefrecord) {

    86     aRv.Throw(NS_ERROR_FAILURE);

    87     return nullptr;

    88   }

    89   return ndefrecord.forget();

    90 }

    92 MozNDEFRecord::MozNDEFRecord(JSContext* aCx, nsPIDOMWindow* aWindow,

    93                              uint8_t aTnf,

    94                              const Optional<Uint8Array>& aType,

    95                              const Optional<Uint8Array>& aId,

    96                              const Optional<Uint8Array>& aPayload)

    97   : mTnf(aTnf)

    98 {

    99   mWindow = aWindow; // For GetParentObject()

   101   if (aType.WasPassed()) {

   102     mType = Uint8Array::Create(aCx, this, aType.Value().Length(), aType.Value().Data());

   103   }

   105   if (aId.WasPassed()) {

   106     mId = Uint8Array::Create(aCx, this, aId.Value().Length(), aId.Value().Data());

   107   }

   109   if (aPayload.WasPassed()) {

   110     mPayload = Uint8Array::Create(aCx, this, aPayload.Value().Length(), aPayload.Value().Data());

   111   }

   113   SetIsDOMBinding();

   114   HoldData();

   115 }

   117 MozNDEFRecord::~MozNDEFRecord()

   118 {

   119   DropData();

   120 }

   122 JSObject*

   123 MozNDEFRecord::WrapObject(JSContext* aCx)

   124 {

   125   return MozNDEFRecordBinding::Wrap(aCx, this);

   126 }

   128 } // namespace dom

   129 } // namespace mozilla

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