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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_QUICK_PAIR_FEATURE_STATUS_TRACKER_BASE_ENABLED_PROVIDER_H_
#define ASH_QUICK_PAIR_FEATURE_STATUS_TRACKER_BASE_ENABLED_PROVIDER_H_
#include "base/functional/callback.h"
namespace ash {
namespace quick_pair {
// Common Base class to expose whether or not a feature is enabled.
// Provides a |is_enabled()| method and a callback pattern to observe changes.
//
// Subclasses can focus on implementing the logic to determine the state of
// |is_enabled()|, and this base class provides common functionality for
// querying and observing that state.
//
// Example subclass: BluetoothEnabledProvider - Changes |is_enabled()| based on
// the Bluetooth state on the device.
class BaseEnabledProvider {
public:
BaseEnabledProvider();
BaseEnabledProvider(const BaseEnabledProvider&) = delete;
BaseEnabledProvider& operator=(const BaseEnabledProvider&) = delete;
virtual ~BaseEnabledProvider();
virtual bool is_enabled();
virtual void SetCallback(base::RepeatingCallback<void(bool)> callback);
protected:
void SetEnabledAndInvokeCallback(bool new_value);
private:
bool is_enabled_ = false;
base::RepeatingCallback<void(bool)> callback_;
};
} // namespace quick_pair
} // namespace ash
#endif // ASH_QUICK_PAIR_FEATURE_STATUS_TRACKER_BASE_ENABLED_PROVIDER_H_
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