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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_TIMEZONE_TIMEZONE_RESOLVER_H_
#define CHROMEOS_ASH_COMPONENTS_TIMEZONE_TIMEZONE_RESOLVER_H_
#include <memory>
#include "base/component_export.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/threading/thread_checker.h"
#include "chromeos/ash/components/geolocation/simple_geolocation_provider.h"
class PrefRegistrySimple;
class PrefService;
namespace network {
class SharedURLLoaderFactory;
} // namespace network
namespace ash {
struct TimeZoneResponseData;
// This class implements periodic timezone synchronization.
class COMPONENT_EXPORT(CHROMEOS_ASH_COMPONENTS_TIMEZONE) TimeZoneResolver {
public:
class TimeZoneResolverImpl;
// This callback will be called when new timezone arrives.
using ApplyTimeZoneCallback =
base::RepeatingCallback<void(const TimeZoneResponseData*)>;
// `ash::DelayNetworkCall` cannot be used directly due to link restrictions.
using DelayNetworkCallClosure =
base::RepeatingCallback<void(base::OnceClosure)>;
class Delegate {
public:
Delegate() = default;
Delegate(const Delegate&) = delete;
Delegate& operator=(const Delegate&) = delete;
virtual ~Delegate() = default;
// Returns true if TimeZoneResolver should include WiFi data in request.
virtual bool ShouldSendWiFiGeolocationData() const = 0;
// Returns true if TimeZoneResolver should include Cellular data in request.
virtual bool ShouldSendCellularGeolocationData() const = 0;
};
// This is a LocalState preference to store base::Time value of the last
// request. It is used to limit request rate on browser restart.
static const char kLastTimeZoneRefreshTime[];
TimeZoneResolver(Delegate* delegate,
SimpleGeolocationProvider* geolocation_provider_,
scoped_refptr<network::SharedURLLoaderFactory> factory,
const ApplyTimeZoneCallback& apply_timezone,
const DelayNetworkCallClosure& delay_network_call,
PrefService* local_state);
TimeZoneResolver(const TimeZoneResolver&) = delete;
TimeZoneResolver& operator=(const TimeZoneResolver&) = delete;
~TimeZoneResolver();
// Starts periodic timezone refresh.
void Start();
// Cancels current request and stops periodic timezone refresh.
void Stop();
// Return true if the periodic timezone scheduler is running (Stop() not
// called).
bool IsRunning();
// Register prefs to LocalState.
static void RegisterPrefs(PrefRegistrySimple* registry);
scoped_refptr<network::SharedURLLoaderFactory> shared_url_loader_factory()
const;
DelayNetworkCallClosure delay_network_call() const {
return delay_network_call_;
}
ApplyTimeZoneCallback apply_timezone() const { return apply_timezone_; }
PrefService* local_state() const { return local_state_; }
// Proxy call to Delegate::ShouldSendWiFiGeolocationData().
bool ShouldSendWiFiGeolocationData() const;
// Proxy call to Delegate::ShouldSendCellularGeolocationData().
bool ShouldSendCellularGeolocationData() const;
// Expose internal fuctions for testing.
static int MaxRequestsCountForIntervalForTesting(
const double interval_seconds);
static int IntervalForNextRequestForTesting(const int requests);
private:
bool is_running_ = false;
const raw_ptr<const Delegate> delegate_;
// Points to the `SimpleGeolocationProvider::GetInstance()` throughout the
// object lifecycle. Overridden in unit tests.
raw_ptr<SimpleGeolocationProvider> geolocation_provider_ = nullptr;
scoped_refptr<network::SharedURLLoaderFactory> shared_url_loader_factory_;
const ApplyTimeZoneCallback apply_timezone_;
const DelayNetworkCallClosure delay_network_call_;
raw_ptr<PrefService> local_state_;
std::unique_ptr<TimeZoneResolverImpl> implementation_;
THREAD_CHECKER(thread_checker_);
};
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_TIMEZONE_TIMEZONE_RESOLVER_H_
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