| // 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_GEOLOCATION_PROVIDER_IMPL_H_ |
| #define SERVICES_DEVICE_GEOLOCATION_GEOLOCATION_PROVIDER_IMPL_H_ |
| |
| #include <list> |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "base/callback_forward.h" |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "base/threading/thread.h" |
| #include "build/build_config.h" |
| #include "mojo/public/cpp/bindings/binding.h" |
| #include "services/device/geolocation/geolocation_provider.h" |
| #include "services/device/public/cpp/geolocation/location_provider.h" |
| #include "services/device/public/mojom/geolocation_control.mojom.h" |
| #include "services/device/public/mojom/geoposition.mojom.h" |
| |
| namespace base { |
| template <typename Type> |
| struct DefaultSingletonTraits; |
| class SingleThreadTaskRunner; |
| } // namespace base |
| |
| namespace network { |
| class SharedURLLoaderFactory; |
| } |
| |
| namespace device { |
| |
| // Callback that returns the embedder's custom location provider. This callback |
| // is provided to the Device Service by its embedder. |
| using CustomLocationProviderCallback = |
| base::Callback<std::unique_ptr<LocationProvider>()>; |
| |
| class GeolocationProviderImpl : public GeolocationProvider, |
| public mojom::GeolocationControl, |
| public base::Thread { |
| public: |
| // GeolocationProvider implementation: |
| std::unique_ptr<GeolocationProvider::Subscription> AddLocationUpdateCallback( |
| const LocationUpdateCallback& callback, |
| bool enable_high_accuracy) override; |
| bool HighAccuracyLocationInUse() override; |
| void OverrideLocationForTesting(const mojom::Geoposition& position) override; |
| |
| // Callback from the LocationArbitrator. Public for testing. |
| void OnLocationUpdate(const LocationProvider* provider, |
| const mojom::Geoposition& position); |
| |
| // Gets a pointer to the singleton instance of the location relayer, which |
| // is in turn bound to the browser's global context objects. This must only be |
| // called on the UI thread so that the GeolocationProviderImpl is always |
| // instantiated on the same thread. Ownership is NOT returned. |
| static GeolocationProviderImpl* GetInstance(); |
| |
| // Optional: Provide global configuration to Geolocation. Should be called |
| // before using Init() on the singleton GetInstance(). |
| // |url_loader_factory| : a factory to use for network geolocation requests. |
| // |api_key| : a Google API key for network geolocation requests. |
| // |custom_location_provider_getter| : a callback which returns a custom |
| // location provider from embedder. |
| // |use_gms_core_location_provider| : For android only, a flag indicates |
| // whether using the GMS core location provider. |
| static void SetGeolocationConfiguration( |
| scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory, |
| const std::string& api_key, |
| const CustomLocationProviderCallback& custom_location_provider_getter, |
| bool use_gms_core_location_provider = false); |
| |
| void BindGeolocationControlRequest(mojom::GeolocationControlRequest request); |
| |
| // mojom::GeolocationControl implementation: |
| void UserDidOptIntoLocationServices() override; |
| |
| bool user_did_opt_into_location_services_for_testing() { |
| return user_did_opt_into_location_services_; |
| } |
| |
| void clear_user_did_opt_into_location_services_for_testing() { |
| user_did_opt_into_location_services_ = false; |
| } |
| |
| // Safe to call while there are no GeolocationProviderImpl clients |
| // registered. |
| void SetArbitratorForTesting(std::unique_ptr<LocationProvider> arbitrator); |
| |
| private: |
| friend struct base::DefaultSingletonTraits<GeolocationProviderImpl>; |
| GeolocationProviderImpl(); |
| ~GeolocationProviderImpl() override; |
| |
| bool OnGeolocationThread() const; |
| |
| // Start and stop providers as needed when clients are added or removed. |
| void OnClientsChanged(); |
| |
| // Stops the providers when there are no more registered clients. Note that |
| // once the Geolocation thread is started, it will stay alive (but sitting |
| // idle without any pending messages). |
| void StopProviders(); |
| |
| // Starts the geolocation providers or updates their options (delegates to |
| // arbitrator). |
| void StartProviders(bool enable_high_accuracy); |
| |
| // Updates the providers on the geolocation thread, which must be running. |
| void InformProvidersPermissionGranted(); |
| |
| // Notifies all registered clients that a position update is available. |
| void NotifyClients(const mojom::Geoposition& position); |
| |
| // Thread |
| void Init() override; |
| void CleanUp() override; |
| |
| base::CallbackList<void(const mojom::Geoposition&)> high_accuracy_callbacks_; |
| base::CallbackList<void(const mojom::Geoposition&)> low_accuracy_callbacks_; |
| |
| bool user_did_opt_into_location_services_; |
| mojom::Geoposition position_; |
| |
| // True only in testing, where we want to use a custom position. |
| bool ignore_location_updates_; |
| |
| // Used to PostTask()s from the geolocation thread to caller thread. |
| const scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_; |
| |
| // Only to be used on the geolocation thread. |
| std::unique_ptr<LocationProvider> arbitrator_; |
| |
| mojo::Binding<mojom::GeolocationControl> binding_; |
| |
| DISALLOW_COPY_AND_ASSIGN(GeolocationProviderImpl); |
| }; |
| |
| } // namespace device |
| |
| #endif // SERVICES_DEVICE_GEOLOCATION_GEOLOCATION_PROVIDER_IMPL_H_ |