dom/bindings/RootedDictionary.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
   2 /* vim: set ts=2 sw=2 et tw=79: */
   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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_RootedDictionary_h__
   8 #define mozilla_dom_RootedDictionary_h__
   9
  10 #include "mozilla/GuardObjects.h"
  11 #include "mozilla/dom/Nullable.h"
  12 #include "jsapi.h"
  13
  14 namespace mozilla {
  15 namespace dom {
  16
  17 template<typename T>
  18 class MOZ_STACK_CLASS RootedDictionary : public T,
  19                                          private JS::CustomAutoRooter
  20 {
  21 public:
  22   explicit RootedDictionary(JSContext* cx MOZ_GUARD_OBJECT_NOTIFIER_PARAM) :
  23     T(),
  24     JS::CustomAutoRooter(cx MOZ_GUARD_OBJECT_NOTIFIER_PARAM_TO_PARENT)
  25   {
  26   }
  27
  28   virtual void trace(JSTracer *trc) MOZ_OVERRIDE
  29   {
  30     this->TraceDictionary(trc);
  31   }
  32 };
  33
  34 template<typename T>
  35 class MOZ_STACK_CLASS NullableRootedDictionary : public Nullable<T>,
  36                                                  private JS::CustomAutoRooter
  37 {
  38 public:
  39   explicit NullableRootedDictionary(JSContext* cx MOZ_GUARD_OBJECT_NOTIFIER_PARAM) :
  40     Nullable<T>(),
  41     JS::CustomAutoRooter(cx MOZ_GUARD_OBJECT_NOTIFIER_PARAM_TO_PARENT)
  42   {
  43   }
  44
  45   virtual void trace(JSTracer *trc) MOZ_OVERRIDE
  46   {
  47     if (!this->IsNull()) {
  48       this->Value().TraceDictionary(trc);
  49     }
  50   }
  51 };
  52
  53 } // namespace dom
  54 } // namespace mozilla
  55
  56 #endif /* mozilla_dom_RootedDictionary_h__ */