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// 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 "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:
EffectiveConnectionTypeObserver(const EffectiveConnectionTypeObserver&) =
delete;
EffectiveConnectionTypeObserver& operator=(
const EffectiveConnectionTypeObserver&) = delete;
// 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() {}
};
} // namespace net
#endif // NET_NQE_EFFECTIVE_CONNECTION_TYPE_OBSERVER_H_