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-rw-r--r--dom/system/windows/WindowsLocationProvider.cpp289
1 files changed, 289 insertions, 0 deletions
diff --git a/dom/system/windows/WindowsLocationProvider.cpp b/dom/system/windows/WindowsLocationProvider.cpp
new file mode 100644
index 000000000..fa7f8d8be
--- /dev/null
+++ b/dom/system/windows/WindowsLocationProvider.cpp
@@ -0,0 +1,289 @@
+/* -*- 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/. */
+
+#include "WindowsLocationProvider.h"
+#include "nsGeoPosition.h"
+#include "nsIDOMGeoPositionError.h"
+#include "nsComponentManagerUtils.h"
+#include "prtime.h"
+#include "MLSFallback.h"
+#include "mozilla/Telemetry.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_ISUPPORTS(WindowsLocationProvider::MLSUpdate, nsIGeolocationUpdate);
+
+WindowsLocationProvider::MLSUpdate::MLSUpdate(nsIGeolocationUpdate* aCallback)
+: mCallback(aCallback)
+{
+}
+
+NS_IMETHODIMP
+WindowsLocationProvider::MLSUpdate::Update(nsIDOMGeoPosition *aPosition)
+{
+ if (!mCallback) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsCOMPtr<nsIDOMGeoPositionCoords> coords;
+ aPosition->GetCoords(getter_AddRefs(coords));
+ if (!coords) {
+ return NS_ERROR_FAILURE;
+ }
+ Telemetry::Accumulate(Telemetry::GEOLOCATION_WIN8_SOURCE_IS_MLS, true);
+ return mCallback->Update(aPosition);
+}
+NS_IMETHODIMP
+WindowsLocationProvider::MLSUpdate::NotifyError(uint16_t aError)
+{
+ if (!mCallback) {
+ return NS_ERROR_FAILURE;
+ }
+ return mCallback->NotifyError(aError);
+}
+
+class LocationEvent final : public ILocationEvents
+{
+public:
+ LocationEvent(nsIGeolocationUpdate* aCallback, WindowsLocationProvider *aProvider)
+ : mCallback(aCallback), mProvider(aProvider), mCount(0) {
+ }
+
+ // IUnknown interface
+ STDMETHODIMP_(ULONG) AddRef() override;
+ STDMETHODIMP_(ULONG) Release() override;
+ STDMETHODIMP QueryInterface(REFIID iid, void** ppv) override;
+
+ // ILocationEvents interface
+ STDMETHODIMP OnStatusChanged(REFIID aReportType,
+ LOCATION_REPORT_STATUS aStatus) override;
+ STDMETHODIMP OnLocationChanged(REFIID aReportType,
+ ILocationReport *aReport) override;
+
+private:
+ nsCOMPtr<nsIGeolocationUpdate> mCallback;
+ RefPtr<WindowsLocationProvider> mProvider;
+ ULONG mCount;
+};
+
+STDMETHODIMP_(ULONG)
+LocationEvent::AddRef()
+{
+ return InterlockedIncrement(&mCount);
+}
+
+STDMETHODIMP_(ULONG)
+LocationEvent::Release()
+{
+ ULONG count = InterlockedDecrement(&mCount);
+ if (!count) {
+ delete this;
+ return 0;
+ }
+ return count;
+}
+
+STDMETHODIMP
+LocationEvent::QueryInterface(REFIID iid, void** ppv)
+{
+ if (iid == IID_IUnknown) {
+ *ppv = static_cast<IUnknown*>(this);
+ } else if (iid == IID_ILocationEvents) {
+ *ppv = static_cast<ILocationEvents*>(this);
+ } else {
+ return E_NOINTERFACE;
+ }
+ AddRef();
+ return S_OK;
+}
+
+
+STDMETHODIMP
+LocationEvent::OnStatusChanged(REFIID aReportType,
+ LOCATION_REPORT_STATUS aStatus)
+{
+ if (aReportType != IID_ILatLongReport) {
+ return S_OK;
+ }
+
+ // When registering event, REPORT_INITIALIZING is fired at first.
+ // Then, when the location is found, REPORT_RUNNING is fired.
+ if (aStatus == REPORT_RUNNING) {
+ // location is found by Windows Location provider, we use it.
+ mProvider->CancelMLSProvider();
+ return S_OK;
+ }
+
+ // Cannot get current location at this time. We use MLS instead until
+ // Location API returns RUNNING status.
+ if (NS_SUCCEEDED(mProvider->CreateAndWatchMLSProvider(mCallback))) {
+ return S_OK;
+ }
+
+ // Cannot watch location by MLS provider. We must return error by
+ // Location API.
+ uint16_t err;
+ switch (aStatus) {
+ case REPORT_ACCESS_DENIED:
+ err = nsIDOMGeoPositionError::PERMISSION_DENIED;
+ break;
+ case REPORT_NOT_SUPPORTED:
+ case REPORT_ERROR:
+ err = nsIDOMGeoPositionError::POSITION_UNAVAILABLE;
+ break;
+ default:
+ return S_OK;
+ }
+ mCallback->NotifyError(err);
+ return S_OK;
+}
+
+STDMETHODIMP
+LocationEvent::OnLocationChanged(REFIID aReportType,
+ ILocationReport *aReport)
+{
+ if (aReportType != IID_ILatLongReport) {
+ return S_OK;
+ }
+
+ RefPtr<ILatLongReport> latLongReport;
+ if (FAILED(aReport->QueryInterface(IID_ILatLongReport,
+ getter_AddRefs(latLongReport)))) {
+ return E_FAIL;
+ }
+
+ DOUBLE latitude = 0.0;
+ latLongReport->GetLatitude(&latitude);
+
+ DOUBLE longitude = 0.0;
+ latLongReport->GetLongitude(&longitude);
+
+ DOUBLE alt = 0.0;
+ latLongReport->GetAltitude(&alt);
+
+ DOUBLE herror = 0.0;
+ latLongReport->GetErrorRadius(&herror);
+
+ DOUBLE verror = 0.0;
+ latLongReport->GetAltitudeError(&verror);
+
+ RefPtr<nsGeoPosition> position =
+ new nsGeoPosition(latitude, longitude, alt, herror, verror, 0.0, 0.0,
+ PR_Now() / PR_USEC_PER_MSEC);
+ mCallback->Update(position);
+
+ Telemetry::Accumulate(Telemetry::GEOLOCATION_WIN8_SOURCE_IS_MLS, false);
+
+ return S_OK;
+}
+
+NS_IMPL_ISUPPORTS(WindowsLocationProvider, nsIGeolocationProvider)
+
+WindowsLocationProvider::WindowsLocationProvider()
+{
+}
+
+WindowsLocationProvider::~WindowsLocationProvider()
+{
+}
+
+NS_IMETHODIMP
+WindowsLocationProvider::Startup()
+{
+ RefPtr<ILocation> location;
+ if (FAILED(::CoCreateInstance(CLSID_Location, nullptr, CLSCTX_INPROC_SERVER,
+ IID_ILocation,
+ getter_AddRefs(location)))) {
+ // We will use MLS provider
+ return NS_OK;
+ }
+
+ IID reportTypes[] = { IID_ILatLongReport };
+ if (FAILED(location->RequestPermissions(nullptr, reportTypes, 1, FALSE))) {
+ // We will use MLS provider
+ return NS_OK;
+ }
+
+ mLocation = location;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+WindowsLocationProvider::Watch(nsIGeolocationUpdate* aCallback)
+{
+ if (mLocation) {
+ RefPtr<LocationEvent> event = new LocationEvent(aCallback, this);
+ if (SUCCEEDED(mLocation->RegisterForReport(event, IID_ILatLongReport, 0))) {
+ return NS_OK;
+ }
+ }
+
+ // Cannot use Location API. We will use MLS instead.
+ mLocation = nullptr;
+
+ return CreateAndWatchMLSProvider(aCallback);
+}
+
+NS_IMETHODIMP
+WindowsLocationProvider::Shutdown()
+{
+ if (mLocation) {
+ mLocation->UnregisterForReport(IID_ILatLongReport);
+ mLocation = nullptr;
+ }
+
+ CancelMLSProvider();
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+WindowsLocationProvider::SetHighAccuracy(bool enable)
+{
+ if (!mLocation) {
+ // MLS provider doesn't support HighAccuracy
+ return NS_OK;
+ }
+
+ LOCATION_DESIRED_ACCURACY desiredAccuracy;
+ if (enable) {
+ desiredAccuracy = LOCATION_DESIRED_ACCURACY_HIGH;
+ } else {
+ desiredAccuracy = LOCATION_DESIRED_ACCURACY_DEFAULT;
+ }
+ if (FAILED(mLocation->SetDesiredAccuracy(IID_ILatLongReport,
+ desiredAccuracy))) {
+ return NS_ERROR_FAILURE;
+ }
+ return NS_OK;
+}
+
+nsresult
+WindowsLocationProvider::CreateAndWatchMLSProvider(
+ nsIGeolocationUpdate* aCallback)
+{
+ if (mMLSProvider) {
+ return NS_OK;
+ }
+
+ mMLSProvider = new MLSFallback();
+ return mMLSProvider->Startup(new MLSUpdate(aCallback));
+}
+
+void
+WindowsLocationProvider::CancelMLSProvider()
+{
+ if (!mMLSProvider) {
+ return;
+ }
+
+ mMLSProvider->Shutdown();
+ mMLSProvider = nullptr;
+}
+
+} // namespace dom
+} // namespace mozilla