gecko-dev/dom/base/PlacesWeakCallbackWrapper.h
Emilio Cobos Álvarez ff61891772 Bug 1653011 - Simplify and make WeakPtr<Derived> usable and compact. r=froydnj,sg,geckoview-reviewers,jgilbert,kvark,snorp
Having two classes in the inheritance chain inherit from SupportsWeakPtr
now won't compile, but you can use WeakPtr<Derived> when any base class
inherits from SupportsWeakPtr.

Differential Revision: https://phabricator.services.mozilla.com/D83674
2020-07-23 14:51:46 +00:00

45 lines
1.5 KiB
C++

/* -*- 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/. */
#ifndef mozilla_dom_PlacesWeakCallbackWrapper_h
#define mozilla_dom_PlacesWeakCallbackWrapper_h
#include "mozilla/dom/PlacesObserversBinding.h"
#include "mozilla/ErrorResult.h"
#include "nsWrapperCache.h"
namespace mozilla {
namespace dom {
class PlacesWeakCallbackWrapper final : public nsWrapperCache,
public SupportsWeakPtr {
public:
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(PlacesWeakCallbackWrapper)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(PlacesWeakCallbackWrapper)
explicit PlacesWeakCallbackWrapper(nsISupports* aParent,
PlacesEventCallback& aCallback);
static already_AddRefed<PlacesWeakCallbackWrapper> Constructor(
const GlobalObject& aGlobal, PlacesEventCallback& aCallback);
nsISupports* GetParentObject() const;
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
protected:
friend class PlacesObservers;
~PlacesWeakCallbackWrapper();
nsWeakPtr mParent;
RefPtr<PlacesEventCallback> mCallback;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_PlacesWeakCallbackWrapper_h