PermissionObserver.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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 mozilla_dom_PermissionObserver_h_

#define mozilla_dom_PermissionObserver_h_

#include "nsIObserver.h"

#include "nsTArray.h"

#include "nsWeakReference.h"

namespace mozilla::dom {

class PermissionStatusSink;

// Singleton that watches for perm-changed notifications in order to notify

// PermissionStatus objects.

class PermissionObserver final : public nsIObserver,

                                 public nsSupportsWeakReference {

 public:

  NS_DECL_ISUPPORTS

  NS_DECL_NSIOBSERVER

  static already_AddRefed<PermissionObserver> GetInstance();

  void AddSink(PermissionStatusSink* aSink);

  void RemoveSink(PermissionStatusSink* aSink);

 private:

  PermissionObserver();

  virtual ~PermissionObserver();

  nsTArray<RefPtr<PermissionStatusSink>> mSinks;

};

}  // namespace mozilla::dom

#endif