Kagami Sascha Rosylight
918e243d0c
Differential Revision: https://phabricator.services.mozilla.com/D311834
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef TOOLKIT_COMPONENTS_GEOLOCATIONS_GEOLOCATIONSERVICE_H_
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#define TOOLKIT_COMPONENTS_GEOLOCATIONS_GEOLOCATIONSERVICE_H_
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#include "mozilla/WeakPtr.h"
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#include "nsCOMPtr.h"
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#include "nsIGeolocationProvider.h"
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#include "nsIGeolocationService.h"
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#include "nsIObserver.h"
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class nsIDOMGeoPosition;
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class nsITimer;
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namespace mozilla::dom {
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class BrowsingContext;
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class Geolocation;
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} // namespace mozilla::dom
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struct CachedPositionAndAccuracy {
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nsCOMPtr<nsIDOMGeoPosition> position;
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bool isHighAccuracy;
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};
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namespace mozilla {
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/**
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* Singleton that manages the geolocation provider
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*/
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class GeolocationService final : public nsIGeolocationService,
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public nsIGeolocationUpdate,
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public nsIObserver {
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public:
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static already_AddRefed<GeolocationService> GetGeolocationService(
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mozilla::dom::BrowsingContext* browsingContext = nullptr);
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static mozilla::StaticRefPtr<GeolocationService> sService;
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIGEOLOCATIONUPDATE
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NS_DECL_NSIOBSERVER
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GeolocationService() = default;
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nsresult Init();
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// Management of the Geolocation objects
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void AddLocator(mozilla::dom::Geolocation* aLocator);
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void RemoveLocator(mozilla::dom::Geolocation* aLocator);
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// Move locators from service override to the original service.
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void MoveLocators(GeolocationService* aService);
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void SetCachedPosition(nsIDOMGeoPosition* aPosition);
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CachedPositionAndAccuracy GetCachedPosition();
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// Find and startup a geolocation device (gps, nmea, etc.)
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MOZ_CAN_RUN_SCRIPT nsresult StartDevice();
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// Stop the started geolocation device (gps, nmea, etc.)
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NS_IMETHOD StopDevice() override;
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// create, or reinitialize the callback timer
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void SetDisconnectTimer();
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// Update the accuracy and notify the provider if changed
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void UpdateAccuracy(bool aForceHigh = false);
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bool HighAccuracyRequested();
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private:
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~GeolocationService();
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// Disconnect timer. When this timer expires, it clears all pending callbacks
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// and closes down the provider, unless we are watching a point, and in that
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// case, we disable the disconnect timer.
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nsCOMPtr<nsITimer> mDisconnectTimer;
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// The object providing geo location information to us.
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nsCOMPtr<nsIGeolocationProvider> mProvider;
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// mGeolocators are not owned here. Their constructor
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// adds them to this list, and their destructor removes
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// them from this list.
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nsTArray<mozilla::WeakPtr<mozilla::dom::Geolocation>> mGeolocators;
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// This is the last geo position that we have seen.
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CachedPositionAndAccuracy mLastPosition;
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// Current state of requests for higher accuracy
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bool mHigherAccuracy = false;
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// Whether the geolocation device is starting.
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// Nothing() if not being started, or a boolean reflecting the requested
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// accuracy.
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mozilla::Maybe<bool> mStarting;
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};
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} // namespace mozilla
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#endif // TOOLKIT_COMPONENTS_GEOLOCATIONS_GEOLOCATIONSERVICE_H_
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