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