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/* -*- 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 */
#include "mozilla/dom/CallbackInterface.h"
#include "jsapi.h"
#include "js/CallAndConstruct.h" // JS::IsCallable
#include "js/CharacterEncoding.h"
#include "js/PropertyAndElement.h" // JS_GetProperty, JS_GetPropertyById
#include "mozilla/dom/BindingUtils.h"
#include "nsPrintfCString.h"
namespace mozilla::dom {
bool CallbackInterface::GetCallableProperty(
BindingCallContext& cx, JS::Handle<jsid> aPropId,
JS::MutableHandle<JS::Value> aCallable) {
JS::Rooted<JSObject*> obj(cx, CallbackKnownNotGray());
if (!JS_GetPropertyById(cx, obj, aPropId, aCallable)) {
return false;
if (!aCallable.isObject() || !JS::IsCallable(&aCallable.toObject())) {
JS::Rooted<JSString*> propId(cx, aPropId.toString());
JS::UniqueChars propName = JS_EncodeStringToUTF8(cx, propId);
nsPrintfCString description("Property '%s'", propName.get());
return false;
return true;
} // namespace mozilla::dom