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// Copyright (c) 2012 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 SERVICES_DEVICE_GEOLOCATION_NETWORK_LOCATION_PROVIDER_H_
#define SERVICES_DEVICE_GEOLOCATION_NETWORK_LOCATION_PROVIDER_H_
#include <stddef.h>
#include <list>
#include <map>
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string16.h"
#include "base/threading/thread.h"
#include "base/threading/thread_checker.h"
#include "services/device/geolocation/network_location_request.h"
#include "services/device/geolocation/wifi_data_provider_manager.h"
#include "services/device/public/cpp/geolocation/location_provider.h"
#include "services/device/public/mojom/geoposition.mojom.h"
namespace device {
class PositionCache;
class NetworkLocationProvider : public LocationProvider {
public:
NetworkLocationProvider(
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
const std::string& api_key,
PositionCache* position_cache);
~NetworkLocationProvider() override;
// LocationProvider implementation
void SetUpdateCallback(const LocationProviderUpdateCallback& cb) override;
void StartProvider(bool high_accuracy) override;
void StopProvider() override;
const mojom::Geoposition& GetPosition() override;
void OnPermissionGranted() override;
private:
// Tries to update |position_| request from cache or network.
void RequestPosition();
// Gets called when new wifi data is available, either via explicit request to
// or callback from |wifi_data_provider_manager_|.
void OnWifiDataUpdate();
bool IsStarted() const;
void OnLocationResponse(const mojom::Geoposition& position,
bool server_error,
const WifiData& wifi_data);
// The wifi data provider, acquired via global factories. Valid between
// StartProvider() and StopProvider(), and checked via IsStarted().
WifiDataProviderManager* wifi_data_provider_manager_;
WifiDataProviderManager::WifiDataUpdateCallback wifi_data_update_callback_;
// The wifi data and a flag to indicate if the data set is complete.
WifiData wifi_data_;
bool is_wifi_data_complete_;
// The timestamp for the latest wifi data update.
base::Time wifi_timestamp_;
PositionCache* const position_cache_;
LocationProvider::LocationProviderUpdateCallback
location_provider_update_callback_;
// Whether permission has been granted for the provider to operate.
bool is_permission_granted_;
bool is_new_data_available_;
// The network location request object.
const std::unique_ptr<NetworkLocationRequest> request_;
base::ThreadChecker thread_checker_;
base::WeakPtrFactory<NetworkLocationProvider> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(NetworkLocationProvider);
};
} // namespace device
#endif // SERVICES_DEVICE_GEOLOCATION_NETWORK_LOCATION_PROVIDER_H_