/* THIS FILE IS AUTOGENERATED FROM ScrollViewChangeEvent.webidl BY Codegen.py - DO NOT EDIT */

#include "AtomList.h"

#include "EventBinding.h"

#include "ScrollViewChangeEventBinding.h"

#include "WrapperFactory.h"

#include "jsapi.h"

#include "mozilla/OwningNonNull.h"

#include "mozilla/dom/BindingUtils.h"

#include "mozilla/dom/DOMJSClass.h"

#include "mozilla/dom/NonRefcountedDOMObject.h"

#include "mozilla/dom/PrimitiveConversions.h"

#include "mozilla/dom/ScriptSettings.h"

#include "mozilla/dom/ScrollViewChangeEvent.h"

#include "mozilla/dom/SimpleGlobalObject.h"

#include "mozilla/dom/XrayExpandoClass.h"

#include "nsContentUtils.h"

namespace mozilla {

namespace dom {

namespace binding_detail {}; // Just to make sure it's known as a namespace

using namespace mozilla::dom::binding_detail;

namespace ScrollStateValues {

extern const EnumEntry strings[3] = {

  {"started", 7},

  {"stopped", 7},

  { nullptr, 0 }

};

} // namespace ScrollStateValues

bool

ToJSValue(JSContext* aCx, ScrollState aArgument, JS::MutableHandle<JS::Value> aValue)

{

  MOZ_ASSERT(uint32_t(aArgument) < ArrayLength(ScrollStateValues::strings));

  JSString* resultStr =

    JS_NewStringCopyN(aCx, ScrollStateValues::strings[uint32_t(aArgument)].value,

                      ScrollStateValues::strings[uint32_t(aArgument)].length);

  if (!resultStr) {

    return false;

  }

  aValue.setString(resultStr);

  return true;

}

ScrollViewChangeEventInit::ScrollViewChangeEventInit()

  : EventInit(FastDictionaryInitializer())

{

  // Safe to pass a null context if we pass a null value

  Init(nullptr, JS::NullHandleValue);

}

bool

ScrollViewChangeEventInit::InitIds(JSContext* cx, ScrollViewChangeEventInitAtoms* atomsCache)

{

  MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));

  // Initialize these in reverse order so that any failure leaves the first one

  // uninitialized.

  if (!atomsCache->state_id.init(cx, "state")) {

    return false;

  }

  return true;

}

bool

ScrollViewChangeEventInit::Init(JSContext* cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)

{

  // Passing a null JSContext is OK only if we're initing from null,

  // Since in that case we will not have to do any property gets

  // Also evaluate isNullOrUndefined in order to avoid false-positive

  // checkers by static analysis tools

  MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());

  ScrollViewChangeEventInitAtoms* atomsCache = nullptr;

  if (cx) {

    atomsCache = GetAtomCache<ScrollViewChangeEventInitAtoms>(cx);

    if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {

      return false;

    }

  }

  // Per spec, we init the parent's members first

  if (!EventInit::Init(cx, val)) {

    return false;

  }

  bool isNull = val.isNullOrUndefined();

  // We only need these if !isNull, in which case we have |cx|.

  Maybe<JS::Rooted<JSObject *> > object;

  Maybe<JS::Rooted<JS::Value> > temp;

  if (!isNull) {

    MOZ_ASSERT(cx);

    object.emplace(cx, &val.toObject());

    temp.emplace(cx);

  }

  if (!isNull) {

    if (!JS_GetPropertyById(cx, *object, atomsCache->state_id, temp.ptr())) {

      return false;

    }

  }

  if (!isNull && !temp->isUndefined()) {

    {

      int index;

      if (!FindEnumStringIndex<true>(cx, temp.ref(), ScrollStateValues::strings, "ScrollState", "'state' member of ScrollViewChangeEventInit", &index)) {

        return false;

      }

      MOZ_ASSERT(index >= 0);

      mState = static_cast<ScrollState>(index);

    }

  } else {

    mState = ScrollState::Started;

  }

  mIsAnyMemberPresent = true;

  return true;

}

bool

ScrollViewChangeEventInit::Init(const nsAString& aJSON)

{

  AutoJSAPI jsapi;

  JSObject* cleanGlobal = SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);

  if (!cleanGlobal) {

    return false;

  }

  if (!jsapi.Init(cleanGlobal)) {

    return false;

  }

  JSContext* cx = jsapi.cx();

  JS::Rooted<JS::Value> json(cx);

  bool ok = ParseJSON(cx, aJSON, &json);

  NS_ENSURE_TRUE(ok, false);

  return Init(cx, json);

}

bool

ScrollViewChangeEventInit::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const

{

  ScrollViewChangeEventInitAtoms* atomsCache = GetAtomCache<ScrollViewChangeEventInitAtoms>(cx);

  if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {

    return false;

  }

  // Per spec, we define the parent's members first

  if (!EventInit::ToObjectInternal(cx, rval)) {

    return false;

  }

  JS::Rooted<JSObject*> obj(cx, &rval.toObject());

  do {

    // block for our 'break' successCode and scope for 'temp' and 'currentValue'

    JS::Rooted<JS::Value> temp(cx);

    ScrollState const & currentValue = mState;

    if (!ToJSValue(cx, currentValue, &temp)) {

      return false;

    }

    if (!JS_DefinePropertyById(cx, obj, atomsCache->state_id, temp, JSPROP_ENUMERATE)) {

      return false;

    }

    break;

  } while(false);

  return true;

}

bool

ScrollViewChangeEventInit::ToJSON(nsAString& aJSON) const

{

  AutoJSAPI jsapi;

  jsapi.Init();

  JSContext *cx = jsapi.cx();

  // It's safe to use UnprivilegedJunkScopeOrWorkerGlobal here

  // because we'll only be creating objects, in ways that have no

  // side-effects, followed by a call to JS::ToJSONMaybeSafely,

  // which likewise guarantees no side-effects for the sorts of

  // things we will pass it.

  JSAutoRealm ar(cx, UnprivilegedJunkScopeOrWorkerGlobal());

  JS::Rooted<JS::Value> val(cx);

  if (!ToObjectInternal(cx, &val)) {

    return false;

  }

  JS::Rooted<JSObject*> obj(cx, &val.toObject());

  return StringifyToJSON(cx, obj, aJSON);

}

void

ScrollViewChangeEventInit::TraceDictionary(JSTracer* trc)

{

  EventInit::TraceDictionary(trc);

}

ScrollViewChangeEventInit&

ScrollViewChangeEventInit::operator=(const ScrollViewChangeEventInit& aOther)

{

  EventInit::operator=(aOther);

  mState = aOther.mState;

  return *this;

}

namespace binding_detail {

} // namespace binding_detail

namespace ScrollViewChangeEvent_Binding {

static_assert(IsRefcounted<NativeType>::value == IsRefcounted<Event_Binding::NativeType>::value,

              "Can't inherit from an interface with a different ownership model.");

MOZ_CAN_RUN_SCRIPT static bool

get_state(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::ScrollViewChangeEvent* self, JSJitGetterCallArgs args)

{

  AUTO_PROFILER_LABEL_FAST("get ScrollViewChangeEvent.state", DOM, cx);

  ScrollState result(self->State());

  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  if (!ToJSValue(cx, result, args.rval())) {

    return false;

  }

  return true;

}

static const JSJitInfo state_getterinfo = {

  { (JSJitGetterOp)get_state },

  { prototypes::id::ScrollViewChangeEvent },

  { PrototypeTraits<prototypes::id::ScrollViewChangeEvent>::Depth },

  JSJitInfo::Getter,

  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */

  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */

  false,  /* isInfallible. False in setters. */

  false,  /* isMovable.  Not relevant for setters. */

  false, /* isEliminatable.  Not relevant for setters. */

  false, /* isAlwaysInSlot.  Only relevant for getters. */

  false, /* isLazilyCachedInSlot.  Only relevant for getters. */

  false,  /* isTypedMethod.  Only relevant for methods. */

  0   /* Reserved slot index, if we're stored in a slot, else 0. */

};

static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");

static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool

get_isTrusted(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::ScrollViewChangeEvent* self, JSJitGetterCallArgs args)

{

  AUTO_PROFILER_LABEL_FAST("get ScrollViewChangeEvent.isTrusted", DOM, cx);

  bool result(self->IsTrusted());

  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  args.rval().setBoolean(result);

  return true;

}

static const JSJitInfo isTrusted_getterinfo = {

  { (JSJitGetterOp)get_isTrusted },

  { prototypes::id::ScrollViewChangeEvent },

  { PrototypeTraits<prototypes::id::ScrollViewChangeEvent>::Depth },

  JSJitInfo::Getter,

  JSJitInfo::AliasDOMSets, /* aliasSet.  Not relevant for setters. */

  JSVAL_TYPE_BOOLEAN,  /* returnType.  Not relevant for setters. */

  true,  /* isInfallible. False in setters. */

  true,  /* isMovable.  Not relevant for setters. */

  true, /* isEliminatable.  Not relevant for setters. */

  false, /* isAlwaysInSlot.  Only relevant for getters. */

  false, /* isLazilyCachedInSlot.  Only relevant for getters. */

  false,  /* isTypedMethod.  Only relevant for methods. */

  0   /* Reserved slot index, if we're stored in a slot, else 0. */

};

static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");

static_assert(0 < 1, "There is no slot for us");

static bool

_addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)

{

  mozilla::dom::ScrollViewChangeEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::ScrollViewChangeEvent>(obj);

  // We don't want to preserve if we don't have a wrapper, and we

  // obviously can't preserve if we're not initialized.

  if (self && self->GetWrapperPreserveColor()) {

    PreserveWrapper(self);

  }

  return true;

}

static void

_finalize(js::FreeOp* fop, JSObject* obj)

{

  mozilla::dom::ScrollViewChangeEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::ScrollViewChangeEvent>(obj);

  if (self) {

    ClearWrapper(self, self, obj);

    AddForDeferredFinalization<mozilla::dom::ScrollViewChangeEvent>(self);

  }

}

static size_t

_objectMoved(JSObject* obj, JSObject* old)

{

  mozilla::dom::ScrollViewChangeEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::ScrollViewChangeEvent>(obj);

  if (self) {

    UpdateWrapper(self, self, obj, old);

  }

  return 0;

}

// We deliberately use brace-elision to make Visual Studio produce better initalization code.

#if defined(__clang__)

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wmissing-braces"

#endif

static const JSPropertySpec sAttributes_specs[] = {

  { "state", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &state_getterinfo, nullptr, nullptr },

  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }

};

#if defined(__clang__)

#pragma clang diagnostic pop

#endif

static const Prefable<const JSPropertySpec> sAttributes[] = {

  { nullptr, &sAttributes_specs[0] },

  { nullptr, nullptr }

};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,

    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,

    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.

#if defined(__clang__)

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wmissing-braces"

#endif

static const JSPropertySpec sUnforgeableAttributes_specs[] = {

  { "isTrusted", JSPROP_ENUMERATE | JSPROP_PERMANENT, GenericGetter<NormalThisPolicy, ThrowExceptions>, &isTrusted_getterinfo, nullptr, nullptr },

  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }

};

#if defined(__clang__)

#pragma clang diagnostic pop

#endif

static const Prefable<const JSPropertySpec> sUnforgeableAttributes[] = {

  { nullptr, &sUnforgeableAttributes_specs[0] },

  { nullptr, nullptr }

};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,

    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,

    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

static uint16_t sNativeProperties_sortedPropertyIndices[2];

static PropertyInfo sNativeProperties_propertyInfos[2];

static const NativePropertiesN<2> sNativeProperties = {

  false, 0,

  false, 0,

  false, 0,

  true,  0 /* sAttributes */,

  false, 0,

  true,  1 /* sUnforgeableAttributes */,

  false, 0,

  -1,

  2,

  sNativeProperties_sortedPropertyIndices,

  {

    { sAttributes, &sNativeProperties_propertyInfos[0] },

    { sUnforgeableAttributes, &sNativeProperties_propertyInfos[1] }

  }

};

static_assert(2 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),

    "We have a property info count that is oversized");

static bool

_constructor(JSContext* cx, unsigned argc, JS::Value* vp)

{

  AUTO_PROFILER_LABEL_FAST("ScrollViewChangeEvent constructor", DOM, cx);

  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);

  JS::Rooted<JSObject*> obj(cx, &args.callee());

  if (!args.isConstructing()) {

    // XXXbz wish I could get the name from the callee instead of

    // Adding more relocations

    return ThrowConstructorWithoutNew(cx, "ScrollViewChangeEvent");

  }

  JS::Rooted<JSObject*> desiredProto(cx);

  if (!GetDesiredProto(cx, args, &desiredProto)) {

    return false;

  }

  if (MOZ_UNLIKELY(args.length() < 1)) {

    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "ScrollViewChangeEvent");

  }

  GlobalObject global(cx, obj);

  if (global.Failed()) {

    return false;

  }

  bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);

  binding_detail::FakeString arg0;

  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {

    return false;

  }

  binding_detail::FastScrollViewChangeEventInit arg1;

  if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue,  "Argument 2 of ScrollViewChangeEvent.constructor", false)) {

    return false;

  }

  Maybe<JSAutoRealm> ar;

  if (objIsXray) {

    obj = js::CheckedUnwrap(obj);

    if (!obj) {

      return false;

    }

    ar.emplace(cx, obj);

    if (!JS_WrapObject(cx, &desiredProto)) {

      return false;

    }

  }

  FastErrorResult rv;

  auto result(StrongOrRawPtr<mozilla::dom::ScrollViewChangeEvent>(mozilla::dom::ScrollViewChangeEvent::Constructor(global, NonNullHelper(Constify(arg0)), Constify(arg1), rv)));

  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {

    return false;

  }

  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  static_assert(!IsPointer<decltype(result)>::value,

                "NewObject implies that we need to keep the object alive with a strong reference.");

  if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) {

    MOZ_ASSERT(JS_IsExceptionPending(cx));

    return false;

  }

  return true;

}

static const js::ClassOps sInterfaceObjectClassOps = {

    nullptr,               /* addProperty */

    nullptr,               /* delProperty */

    nullptr,               /* enumerate */

    nullptr,               /* newEnumerate */

    nullptr,               /* resolve */

    nullptr,               /* mayResolve */

    nullptr,               /* finalize */

    _constructor, /* call */

    nullptr,               /* hasInstance */

    _constructor, /* construct */

    nullptr,               /* trace */

};

static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {

  {

    "Function",

    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),

    &sInterfaceObjectClassOps,

    JS_NULL_CLASS_SPEC,

    JS_NULL_CLASS_EXT,

    &sInterfaceObjectClassObjectOps

  },

  eInterface,

  true,

  prototypes::id::ScrollViewChangeEvent,

  PrototypeTraits<prototypes::id::ScrollViewChangeEvent>::Depth,

  sNativePropertyHooks,

  "function ScrollViewChangeEvent() {\n    [native code]\n}",

  Event_Binding::GetConstructorObject

};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {

  {

    "ScrollViewChangeEventPrototype",

    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE + 1 /* slot for the JSObject holding the unforgeable properties */),

    JS_NULL_CLASS_OPS,

    JS_NULL_CLASS_SPEC,

    JS_NULL_CLASS_EXT,

    JS_NULL_OBJECT_OPS

  },

  eInterfacePrototype,

  false,

  prototypes::id::ScrollViewChangeEvent,

  PrototypeTraits<prototypes::id::ScrollViewChangeEvent>::Depth,

  sNativePropertyHooks,

  "[object ScrollViewChangeEventPrototype]",

  Event_Binding::GetProtoObject

};

bool

ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)

{

  return nsContentUtils::ThreadsafeIsSystemCaller(aCx);

}

static const js::ClassOps sClassOps = {

  _addProperty, /* addProperty */

  nullptr,               /* delProperty */

  nullptr,               /* enumerate */

  nullptr, /* newEnumerate */

  nullptr, /* resolve */

  nullptr, /* mayResolve */

  _finalize, /* finalize */

  nullptr, /* call */

  nullptr,               /* hasInstance */

  nullptr,               /* construct */

  nullptr, /* trace */

};

static const js::ClassExtension sClassExtension = {

  nullptr, /* weakmapKeyDelegateOp */

  _objectMoved /* objectMovedOp */

};

static const DOMJSClass sClass = {

  { "ScrollViewChangeEvent",

    JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_SKIP_NURSERY_FINALIZE,

    &sClassOps,

    JS_NULL_CLASS_SPEC,

    &sClassExtension,

    JS_NULL_OBJECT_OPS

  },

  { prototypes::id::Event, prototypes::id::ScrollViewChangeEvent, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },

  IsBaseOf<nsISupports, mozilla::dom::ScrollViewChangeEvent >::value,

  sNativePropertyHooks,

  FindAssociatedGlobalForNative<mozilla::dom::ScrollViewChangeEvent>::Get,

  GetProtoObjectHandle,

  GetCCParticipant<mozilla::dom::ScrollViewChangeEvent>::Get()

};

static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,

              "Must have the right minimal number of reserved slots.");

static_assert(1 >= 1,

              "Must have enough reserved slots.");

const JSClass*

GetJSClass()

{

  return sClass.ToJSClass();

}

bool

Wrap(JSContext* aCx, mozilla::dom::ScrollViewChangeEvent* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)

{

  static_assert(!IsBaseOf<NonRefcountedDOMObject, mozilla::dom::ScrollViewChangeEvent>::value,

                "Shouldn't have wrappercached things that are not refcounted.");

  MOZ_ASSERT(static_cast<mozilla::dom::ScrollViewChangeEvent*>(aObject) ==

             reinterpret_cast<mozilla::dom::ScrollViewChangeEvent*>(aObject),

             "Multiple inheritance for mozilla::dom::ScrollViewChangeEvent is broken.");

  MOZ_ASSERT(static_cast<mozilla::dom::Event*>(aObject) ==

             reinterpret_cast<mozilla::dom::Event*>(aObject),

             "Multiple inheritance for mozilla::dom::Event is broken.");

  MOZ_ASSERT(ToSupportsIsCorrect(aObject));

  MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));

  MOZ_ASSERT(!aCache->GetWrapper(),

             "You should probably not be using Wrap() directly; use "

             "GetOrCreateDOMReflector instead");

  MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),

             "nsISupports must be on our primary inheritance chain");

  JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));

  if (!global) {

    return false;

  }

  MOZ_ASSERT(JS_IsGlobalObject(global));

  MOZ_ASSERT(JS::ObjectIsNotGray(global));

  // That might have ended up wrapping us already, due to the wonders

  // of XBL.  Check for that, and bail out as needed.

  aReflector.set(aCache->GetWrapper());

  if (aReflector) {

#ifdef DEBUG

    AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);

#endif // DEBUG

    return true;

  }

  JSAutoRealm ar(aCx, global);

  JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);

  if (!canonicalProto) {

    return false;

  }

  JS::Rooted<JSObject*> proto(aCx);

  if (aGivenProto) {

    proto = aGivenProto;

    // Unfortunately, while aGivenProto was in the compartment of aCx

    // coming in, we changed compartments to that of "parent" so may need

    // to wrap the proto here.

    if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {

      if (!JS_WrapObject(aCx, &proto)) {

        return false;

      }

    }

  } else {

    proto = canonicalProto;

  }

  BindingJSObjectCreator<mozilla::dom::ScrollViewChangeEvent> creator(aCx);

  creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);

  if (!aReflector) {

    return false;

  }

  aCache->SetWrapper(aReflector);

  // Important: do unforgeable property setup after we have handed

  // over ownership of the C++ object to obj as needed, so that if

  // we fail and it ends up GCed it won't have problems in the

  // finalizer trying to drop its ownership of the C++ object.

  JS::Rooted<JSObject*> unforgeableHolder(aCx,

    &js::GetReservedSlot(canonicalProto, DOM_INTERFACE_PROTO_SLOTS_BASE).toObject());

  if (!JS_InitializePropertiesFromCompatibleNativeObject(aCx, aReflector, unforgeableHolder)) {

    aCache->ReleaseWrapper(aObject);

    aCache->ClearWrapper();

    return false;

  }

  creator.InitializationSucceeded();

  MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&

             aCache->GetWrapperPreserveColor() == aReflector);

  // If proto != canonicalProto, we have to preserve our wrapper;

  // otherwise we won't be able to properly recreate it later, since

  // we won't know what proto to use.  Note that we don't check

  // aGivenProto here, since it's entirely possible (and even

  // somewhat common) to have a non-null aGivenProto which is the

  // same as canonicalProto.

  if (proto != canonicalProto) {

    PreserveWrapper(aObject);

  }

  return true;

}

const NativePropertyHooks sNativePropertyHooks[] = { {

  nullptr,

  nullptr,

  nullptr,

  { sNativeProperties.Upcast(), nullptr },

  prototypes::id::ScrollViewChangeEvent,

  constructors::id::ScrollViewChangeEvent,

  Event_Binding::sNativePropertyHooks,

  &DefaultXrayExpandoObjectClass

} };

void

CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)

{

  JS::Handle<JSObject*> parentProto(Event_Binding::GetProtoObjectHandle(aCx));

  if (!parentProto) {

    return;

  }

  JS::Handle<JSObject*> constructorProto(Event_Binding::GetConstructorObjectHandle(aCx));

  if (!constructorProto) {

    return;

  }

  static bool sIdsInited = false;

  if (!sIdsInited && NS_IsMainThread()) {

    if (!InitIds(aCx, sNativeProperties.Upcast())) {

      return;

    }

    sIdsInited = true;

  }

  JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::ScrollViewChangeEvent);

  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::ScrollViewChangeEvent);

  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,

                              &sPrototypeClass.mBase, protoCache,

                              nullptr,

                              constructorProto, &sInterfaceObjectClass.mBase, 1, nullptr,

                              interfaceCache,

                              sNativeProperties.Upcast(),

                              nullptr,

                              "ScrollViewChangeEvent", aDefineOnGlobal,

                              nullptr,

                              false);

  JS::Rooted<JSObject*> unforgeableHolder(aCx);

  {

    JS::Rooted<JSObject*> holderProto(aCx, *protoCache);

    unforgeableHolder = JS_NewObjectWithoutMetadata(aCx, sClass.ToJSClass(), holderProto);

    if (!unforgeableHolder) {

      *protoCache = nullptr;

      if (interfaceCache) {

        *interfaceCache = nullptr;

      }

      return;

    }

  }

  if (!DefineUnforgeableAttributes(aCx, unforgeableHolder, sUnforgeableAttributes)) {

    *protoCache = nullptr;

    if (interfaceCache) {

      *interfaceCache = nullptr;

    }

    return;

  }

  if (*protoCache) {

    js::SetReservedSlot(*protoCache, DOM_INTERFACE_PROTO_SLOTS_BASE,

                        JS::ObjectValue(*unforgeableHolder));

  }

}

JSObject*

GetConstructorObject(JSContext* aCx)

{

  return GetConstructorObjectHandle(aCx);

}

} // namespace ScrollViewChangeEvent_Binding

} // namespace dom

} // namespace mozilla