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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NEVER_AVAILABILITY_MODEL_H_
#define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NEVER_AVAILABILITY_MODEL_H_
#include <stdint.h>
#include "base/memory/weak_ptr.h"
#include "components/feature_engagement/internal/availability_model.h"
namespace feature_engagement {
// An AvailabilityModel that never has any data, and is ready after having been
// initialized.
class NeverAvailabilityModel : public AvailabilityModel {
public:
NeverAvailabilityModel();
NeverAvailabilityModel(const NeverAvailabilityModel&) = delete;
NeverAvailabilityModel& operator=(const NeverAvailabilityModel&) = delete;
~NeverAvailabilityModel() override;
// AvailabilityModel implementation.
void Initialize(AvailabilityModel::OnInitializedCallback callback,
uint32_t current_day) override;
bool IsReady() const override;
std::optional<uint32_t> GetAvailability(
const base::Feature& feature) const override;
private:
// Sets |ready_| to true and posts the result to |callback|. This method
// exists to ensure that |ready_| is not updated directly in the
// Initialize(...) method.
void ForwardedOnInitializedCallback(OnInitializedCallback callback);
// Whether the model has been successfully initialized.
bool ready_ = false;
base::WeakPtrFactory<NeverAvailabilityModel> weak_ptr_factory_{this};
};
} // namespace feature_engagement
#endif // COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NEVER_AVAILABILITY_MODEL_H_
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