js/xpconnect/src/qsObjectHelper.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* vim: set ts=8 sts=4 et sw=4 tw=99: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef qsObjectHelper_h
   8 #define qsObjectHelper_h
   9
  10 #include "xpcObjectHelper.h"
  11
  12 #include "nsAutoPtr.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsWrapperCache.h"
  15 #include "mozilla/TypeTraits.h"
  16
  17 class qsObjectHelper : public xpcObjectHelper
  18 {
  19 public:
  20     template <class T>
  21     inline
  22     qsObjectHelper(T* aObject, nsWrapperCache* aCache)
  23         : xpcObjectHelper(ToSupports(aObject), ToCanonicalSupports(aObject),
  24                           aCache)
  25     {}
  26
  27     template <class T>
  28     inline
  29     qsObjectHelper(nsCOMPtr<T>& aObject, nsWrapperCache* aCache)
  30         : xpcObjectHelper(ToSupports(aObject.get()),
  31                           ToCanonicalSupports(aObject.get()), aCache)
  32     {
  33         if (mCanonical) {
  34             // Transfer the strong reference.
  35             mCanonicalStrong = dont_AddRef(mCanonical);
  36             aObject.forget();
  37         }
  38     }
  39
  40     template <class T>
  41     inline
  42     qsObjectHelper(nsRefPtr<T>& aObject, nsWrapperCache* aCache)
  43         : xpcObjectHelper(ToSupports(aObject.get()),
  44                           ToCanonicalSupports(aObject.get()), aCache)
  45     {
  46         if (mCanonical) {
  47             // Transfer the strong reference.
  48             mCanonicalStrong = dont_AddRef(mCanonical);
  49             aObject.forget();
  50         }
  51     }
  52 };
  53
  54 #endif