| // Copyright 2017 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 NET_NQE_EFFECTIVE_CONNECTION_TYPE_OBSERVER_H_ |
| #define NET_NQE_EFFECTIVE_CONNECTION_TYPE_OBSERVER_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "net/base/net_export.h" |
| #include "net/nqe/effective_connection_type.h" |
| |
| namespace net { |
| |
| // Observes changes in effective connection type. |
| class NET_EXPORT_PRIVATE EffectiveConnectionTypeObserver { |
| public: |
| // Notifies the observer of a change in the effective connection type. |
| // NetworkQualityEstimator computes the effective connection type once in |
| // every interval of duration |
| // |effective_connection_type_recomputation_interval_|. Additionally, when |
| // there is a change in the connection type of the device, then the |
| // effective connection type is immediately recomputed. |
| // |
| // If the computed effective connection type is different from the |
| // previously notified effective connection type, then all the registered |
| // observers are notified of the new effective connection type. |
| virtual void OnEffectiveConnectionTypeChanged( |
| EffectiveConnectionType type) = 0; |
| |
| protected: |
| EffectiveConnectionTypeObserver() {} |
| virtual ~EffectiveConnectionTypeObserver() {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(EffectiveConnectionTypeObserver); |
| }; |
| |
| } // namespace net |
| |
| #endif // NET_NQE_EFFECTIVE_CONNECTION_TYPE_OBSERVER_H_ |