/* -*- 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 http://mozilla.org/MPL/2.0/. */

#include "IDBWrapperCache.h"

#include "mozilla/HoldDropJSObjects.h"

#include "nsCOMPtr.h"

#include "nsIScriptGlobalObject.h"

#include "nsPIDOMWindow.h"

namespace mozilla {

namespace dom {

NS_IMPL_CYCLE_COLLECTION_CLASS(IDBWrapperCache)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBWrapperCache,

                                                  DOMEventTargetHelper)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBWrapperCache,

                                                DOMEventTargetHelper)

  if (tmp->mScriptOwner) {

    tmp->mScriptOwner = nullptr;

    mozilla::DropJSObjects(tmp);

  }

NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(IDBWrapperCache,

                                               DOMEventTargetHelper)

  // Don't need NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER because

  // DOMEventTargetHelper does it for us.

  NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mScriptOwner)

NS_IMPL_CYCLE_COLLECTION_TRACE_END

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IDBWrapperCache)

NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)

NS_IMPL_ADDREF_INHERITED(IDBWrapperCache, DOMEventTargetHelper)

NS_IMPL_RELEASE_INHERITED(IDBWrapperCache, DOMEventTargetHelper)

IDBWrapperCache::IDBWrapperCache(DOMEventTargetHelper* aOwner)

  : DOMEventTargetHelper(aOwner), mScriptOwner(nullptr)

{ }

IDBWrapperCache::IDBWrapperCache(nsPIDOMWindowInner* aOwner)

  : DOMEventTargetHelper(aOwner), mScriptOwner(nullptr)

{ }

IDBWrapperCache::~IDBWrapperCache()

{

  mScriptOwner = nullptr;

  ReleaseWrapper(this);

  mozilla::DropJSObjects(this);

}

void

IDBWrapperCache::SetScriptOwner(JSObject* aScriptOwner)

{

  MOZ_ASSERT(aScriptOwner);

  MOZ_ASSERT(JS_IsGlobalObject(aScriptOwner));

  mScriptOwner = aScriptOwner;

  mozilla::HoldJSObjects(this);

}

#ifdef DEBUG

void

IDBWrapperCache::AssertIsRooted() const

{

  MOZ_ASSERT(IsJSHolder(const_cast<IDBWrapperCache*>(this)),

             "Why aren't we rooted?!");

}

#endif

} // namespace dom

} // namespace mozilla