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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_WindowsLocationProvider_h__
#define mozilla_dom_WindowsLocationProvider_h__
#include "nsCOMPtr.h"
#include "nsIGeolocationProvider.h"
#include "mozilla/MozPromise.h"
class MLSFallback;
namespace mozilla::dom {
class WindowsLocationParent;
// Uses a PWindowsLocation actor to subscribe to geolocation updates from the
// Windows utility process and falls back to MLS when it is not available or
// fails.
class WindowsLocationProvider final : public nsIGeolocationProvider {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIGEOLOCATIONPROVIDER
WindowsLocationProvider();
private:
friend WindowsLocationParent;
~WindowsLocationProvider();
nsresult CreateAndWatchMLSProvider(nsIGeolocationUpdate* aCallback);
void CancelMLSProvider();
void MaybeCreateLocationActor();
void ReleaseUtilityProcess();
// These methods either send the message on the existing actor or queue
// the messages to be sent (in order) once the actor exists.
bool SendStartup();
bool SendRegisterForReport(nsIGeolocationUpdate* aCallback);
bool SendUnregisterForReport();
bool SendSetHighAccuracy(bool aEnable);
bool Send__delete__();
void RecvUpdate(RefPtr<nsIDOMGeoPosition> aGeoPosition);
// See bug 1539864 for MOZ_CAN_RUN_SCRIPT_BOUNDARY justification.
MOZ_CAN_RUN_SCRIPT_BOUNDARY void RecvFailed(uint16_t err);
// The utility process actor has ended its connection, either successfully
// or with an error.
void ActorStopped();
// Run fn once actor is ready to send messages, which may be immediately.
template <typename Fn>
bool WhenActorIsReady(Fn&& fn);
RefPtr<MLSFallback> mMLSProvider;
nsCOMPtr<nsIGeolocationUpdate> mCallback;
using WindowsLocationPromise =
MozPromise<RefPtr<WindowsLocationParent>, bool, false>;
// Before the utility process exists, we have a promise that we will get our
// location actor. mActor and mActorPromise are never both set.
RefPtr<WindowsLocationPromise> mActorPromise;
RefPtr<WindowsLocationParent> mActor;
bool mWatching = false;
};
} // namespace mozilla::dom
#endif // mozilla_dom_WindowsLocationProvider_h__
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