js/xpconnect/src/qsObjectHelper.h
author Milan Sreckovic <milan@mozilla.com>
Wed, 10 Jan 2018 11:14:16 -0500
changeset 398756 ef2f9e08e01238ae5893951fa13aafdaa3146f45
parent 301406 232a786cf87fb0f68f9bda6e9316515524d2ac8a
child 414847 39ccabfd7d0712a45335325cb24b0e0b2ba498c7
permissions -rw-r--r--
Bug 1423559: Use BaseRect access methods instead of member variables in widget/ r=mstange MozReview-Commit-ID: AqnztoUbsmk

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=4 et sw=4 tw=99: */
/* 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 qsObjectHelper_h
#define qsObjectHelper_h

#include "xpcObjectHelper.h"

#include "nsCOMPtr.h"
#include "nsWrapperCache.h"
#include "mozilla/TypeTraits.h"

class qsObjectHelper : public xpcObjectHelper
{
public:
    template <class T>
    inline
    qsObjectHelper(T* aObject, nsWrapperCache* aCache)
        : xpcObjectHelper(ToSupports(aObject), ToCanonicalSupports(aObject),
                          aCache)
    {}

    template <class T>
    inline
    qsObjectHelper(nsCOMPtr<T>& aObject, nsWrapperCache* aCache)
        : xpcObjectHelper(ToSupports(aObject.get()),
                          ToCanonicalSupports(aObject.get()), aCache)
    {
        if (mCanonical) {
            // Transfer the strong reference.
            mCanonicalStrong = dont_AddRef(mCanonical);
            aObject.forget();
        }
    }

    template <class T>
    inline
    qsObjectHelper(RefPtr<T>& aObject, nsWrapperCache* aCache)
        : xpcObjectHelper(ToSupports(aObject.get()),
                          ToCanonicalSupports(aObject.get()), aCache)
    {
        if (mCanonical) {
            // Transfer the strong reference.
            mCanonicalStrong = dont_AddRef(mCanonical);
            aObject.forget();
        }
    }
};

#endif