dom/permission/PermissionObserver.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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_PermissionObserver_h_
   8 #define mozilla_dom_PermissionObserver_h_
   9
  10 #include "mozilla/dom/PermissionsBinding.h"
  11
  12 #include "nsIObserver.h"
  13 #include "nsIPrincipal.h"
  14 #include "nsTArray.h"
  15 #include "nsWeakReference.h"
  16
  17 namespace mozilla::dom {
  18
  19 class PermissionStatus;
  20
  21 // Singleton that watches for perm-changed notifications in order to notify
  22 // PermissionStatus objects.
  23 class PermissionObserver final : public nsIObserver,
  24                                  public nsSupportsWeakReference {
  25  public:
  26   NS_DECL_ISUPPORTS
  27   NS_DECL_NSIOBSERVER
  28
  29   static already_AddRefed<PermissionObserver> GetInstance();
  30
  31   void AddSink(PermissionStatus* aObs);
  32   void RemoveSink(PermissionStatus* aObs);
  33
  34  private:
  35   PermissionObserver();
  36   virtual ~PermissionObserver();
  37
  38   nsTArray<PermissionStatus*> mSinks;
  39 };
  40
  41 }  // namespace mozilla::dom
  42
  43 #endif