xpcom/components/GenericFactory.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 mozilla_GenericFactory_h
   8 #define mozilla_GenericFactory_h
   9
  10 #include "mozilla/Attributes.h"
  11
  12 #include "mozilla/Module.h"
  13
  14 namespace mozilla {
  15
  16 /**
  17  * A generic factory which uses a constructor function to create instances.
  18  * This class is intended for use by the component manager and the generic
  19  * module.
  20  */
  21 class GenericFactory final : public nsIFactory
  22 {
  23   ~GenericFactory() {}
  24
  25 public:
  26   typedef Module::ConstructorProcPtr ConstructorProcPtr;
  27
  28   NS_DECL_THREADSAFE_ISUPPORTS
  29   NS_DECL_NSIFACTORY
  30
  31   explicit GenericFactory(ConstructorProcPtr aCtor)
  32     : mCtor(aCtor)
  33   {
  34     NS_ASSERTION(mCtor, "GenericFactory with no constructor");
  35   }
  36
  37 private:
  38   ConstructorProcPtr mCtor;
  39 };
  40
  41 } // namespace mozilla
  42
  43 #endif // mozilla_GenericFactory_h