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-rw-r--r--dom/system/windows/location/WindowsLocationProvider.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/dom/system/windows/location/WindowsLocationProvider.h b/dom/system/windows/location/WindowsLocationProvider.h
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+++ b/dom/system/windows/location/WindowsLocationProvider.h
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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__