| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROMECAST_NET_CONNECTIVITY_CHECKER_H_ |
| #define CHROMECAST_NET_CONNECTIVITY_CHECKER_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/observer_list_threadsafe.h" |
| |
| class GURL; |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } |
| |
| namespace chromecast { |
| |
| // Checks if internet connectivity is available. |
| class ConnectivityChecker |
| : public base::RefCountedThreadSafe<ConnectivityChecker> { |
| public: |
| class ConnectivityObserver { |
| public: |
| // Will be called when internet connectivity changes. |
| virtual void OnConnectivityChanged(bool connected) = 0; |
| |
| protected: |
| ConnectivityObserver() {} |
| virtual ~ConnectivityObserver() {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ConnectivityObserver); |
| }; |
| |
| static scoped_refptr<ConnectivityChecker> Create( |
| const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); |
| |
| ConnectivityChecker(); |
| |
| void AddConnectivityObserver(ConnectivityObserver* observer); |
| void RemoveConnectivityObserver(ConnectivityObserver* observer); |
| |
| // Returns if there is internet connectivity. |
| virtual bool Connected() const = 0; |
| |
| // Checks for connectivity. |
| virtual void Check() = 0; |
| |
| protected: |
| virtual ~ConnectivityChecker(); |
| |
| // Notifies observes that connectivity has changed. |
| void Notify(bool connected); |
| |
| private: |
| friend class base::RefCountedThreadSafe<ConnectivityChecker>; |
| |
| const scoped_refptr<base::ObserverListThreadSafe<ConnectivityObserver>> |
| connectivity_observer_list_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ConnectivityChecker); |
| }; |
| |
| } // namespace chromecast |
| |
| #endif // CHROMECAST_NET_CONNECTIVITY_CHECKER_H_ |