content/child/permissions/permission_observers_registry.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_PERMISSIONS_PERMISSION_OBSERVERS_REGISTRY_H_
   6 #define CONTENT_CHILD_PERMISSIONS_PERMISSION_OBSERVERS_REGISTRY_H_
   7
   8 #include <set>
   9
  10 namespace blink {
  11 class WebPermissionObserver;
  12 }
  13
  14 namespace content {
  15
  16 // PermissionObserversRegistry keeps a list of WebPermissionObserver with basic
  17 // methods to add/removed/check. It is being used by PermissionDispatcher and
  18 // PermissionDispatcherThreadProxy.
  19 // This is not thread-safe.
  20 class PermissionObserversRegistry {
  21  public:
  22   PermissionObserversRegistry();
  23   ~PermissionObserversRegistry();
  24
  25   void RegisterObserver(blink::WebPermissionObserver* observer);
  26   void UnregisterObserver(blink::WebPermissionObserver* observer);
  27   bool IsObserverRegistered(blink::WebPermissionObserver* observer) const;
  28
  29  private:
  30   std::set<blink::WebPermissionObserver*> observers_;
  31 };
  32
  33 }  // namespace content
  34
  35 #endif // CONTENT_CHILD_PERMISSIONS_PERMISSION_OBSERVERS_REGISTRY_H_