// static
JSObject*
DOMProxyHandler::EnsureExpandoObject(JSContext* cx, JSObject* obj)
{
NS_ASSERTION(IsDOMProxy(obj), "expected a DOM proxy object");
JSObject* expando = GetExpandoObject(obj);
if (!expando) {
expando = JS_NewObjectWithGivenProto(cx, nullptr, nullptr,
js::GetObjectParent(obj));
if (!expando) {
return NULL;
}
XPCWrappedNativeScope* scope = xpc::GetObjectScope(obj);
if (!scope->RegisterDOMExpandoObject(obj)) {
return NULL;
}
nsWrapperCache* cache;
CallQueryInterface(UnwrapDOMObject<nsISupports>(obj), &cache);
cache->SetPreservingWrapper(true);
js::SetProxyExtra(obj, JSPROXYSLOT_EXPANDO, ObjectValue(*expando));
}
return expando;
}
// static
JSObject*
DOMProxyHandler::GetAndClearExpandoObject(JSObject* obj)
{
JSObject* expando = GetExpandoObject(obj);
XPCWrappedNativeScope* scope = xpc::GetObjectScope(obj);
scope->RemoveDOMExpandoObject(obj);
js::SetProxyExtra(obj, JSPROXYSLOT_EXPANDO, UndefinedValue());
return expando;
}
bool
DOMProxyHandler::delete_(JSContext* cx, JS::Handle<JSObject*> proxy,
JS::Handle<jsid> id, JS::ObjectOpResult &result) const
{
JS::Rooted<JSObject*> expando(cx);
if (!xpc::WrapperFactory::IsXrayWrapper(proxy) && (expando = GetExpandoObject(proxy))) {
return JS_DeletePropertyById(cx, expando, id, result);
}
return result.succeed();
}
bool
DOMProxyHandler::delete_(JSContext* cx, JS::Handle<JSObject*> proxy,
JS::Handle<jsid> id, bool* bp)
{
JS::Rooted<JSObject*> expando(cx);
if (!xpc::WrapperFactory::IsXrayWrapper(proxy) && (expando = GetExpandoObject(proxy))) {
return JS_DeletePropertyById2(cx, expando, id, bp);
}
*bp = true;
return true;
}
bool
DOMProxyHandler::delete_(JSContext* cx, JS::Handle<JSObject*> proxy,
JS::Handle<jsid> id, bool* bp)
{
JSBool b = true;
JSObject* expando;
if (!xpc::WrapperFactory::IsXrayWrapper(proxy) && (expando = GetExpandoObject(proxy))) {
Value v;
if (!JS_DeletePropertyById2(cx, expando, id, &v) || !JS_ValueToBoolean(cx, v, &b)) {
return false;
}
}
*bp = !!b;
return true;
}