gecko-dev/dom/system/mac/CoreLocationLocationProvide...

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsGeoPosition.h"
#include "nsIConsoleService.h"
#include "nsServiceManagerUtils.h"
#include "nsIDOMGeoPositionError.h"
#include "CoreLocationLocationProvider.h"
#include "nsCocoaFeatures.h"
#include "prtime.h"
#include "mozilla/Telemetry.h"
#include "MLSFallback.h"
#include <CoreLocation/CLError.h>
#include <CoreLocation/CLLocation.h>
#include <CoreLocation/CLLocationManager.h>
#include <CoreLocation/CLLocationManagerDelegate.h>
#include <objc/objc.h>
#include <objc/objc-runtime.h>
#include "nsObjCExceptions.h"
using namespace mozilla;
static const CLLocationAccuracy kHIGH_ACCURACY = kCLLocationAccuracyBest;
static const CLLocationAccuracy kDEFAULT_ACCURACY = kCLLocationAccuracyNearestTenMeters;
@interface LocationDelegate : NSObject <CLLocationManagerDelegate>
{
CoreLocationLocationProvider* mProvider;
}
- (id)init:(CoreLocationLocationProvider*)aProvider;
- (void)locationManager:(CLLocationManager*)aManager
didFailWithError:(NSError *)aError;
- (void)locationManager:(CLLocationManager*)aManager didUpdateLocations:(NSArray*)locations;
@end
@implementation LocationDelegate
- (id) init:(CoreLocationLocationProvider*) aProvider
{
if ((self = [super init])) {
mProvider = aProvider;
}
return self;
}
- (void)locationManager:(CLLocationManager*)aManager
didFailWithError:(NSError *)aError
{
nsCOMPtr<nsIConsoleService> console =
do_GetService(NS_CONSOLESERVICE_CONTRACTID);
NS_ENSURE_TRUE_VOID(console);
NSString* message =
[@"Failed to acquire position: " stringByAppendingString: [aError localizedDescription]];
console->LogStringMessage(NS_ConvertUTF8toUTF16([message UTF8String]).get());
if ([aError code] == kCLErrorDenied) {
mProvider->NotifyError(nsIDOMGeoPositionError::PERMISSION_DENIED);
return;
}
// The CL provider does not fallback to GeoIP, so use NetworkGeolocationProvider for this.
// The concept here is: on error, hand off geolocation to MLS, which will then report
// back a location or error. We can't call this with no delay however, as this method
// is called with an error code of 0 in both failed geolocation cases, and also when
// geolocation is not immediately available.
// The 2 sec delay is arbitrarily large enough that CL has a reasonable head start and
// if it is likely to succeed, it should complete before the MLS provider.
// Take note that in locationManager:didUpdateLocations: the handoff to MLS is stopped.
mProvider->CreateMLSFallbackProvider();
}
- (void)locationManager:(CLLocationManager*)aManager didUpdateLocations:(NSArray*)aLocations
{
if (aLocations.count < 1) {
return;
}
mProvider->CancelMLSFallbackProvider();
CLLocation* location = [aLocations objectAtIndex:0];
nsCOMPtr<nsIDOMGeoPosition> geoPosition =
new nsGeoPosition(location.coordinate.latitude,
location.coordinate.longitude,
location.altitude,
location.horizontalAccuracy,
location.verticalAccuracy,
location.course,
location.speed,
PR_Now() / PR_USEC_PER_MSEC);
mProvider->Update(geoPosition);
Telemetry::Accumulate(Telemetry::GEOLOCATION_OSX_SOURCE_IS_MLS, false);
}
@end
NS_IMPL_ISUPPORTS(CoreLocationLocationProvider::MLSUpdate, nsIGeolocationUpdate);
CoreLocationLocationProvider::MLSUpdate::MLSUpdate(CoreLocationLocationProvider& parentProvider)
: mParentLocationProvider(parentProvider)
{
}
NS_IMETHODIMP
CoreLocationLocationProvider::MLSUpdate::Update(nsIDOMGeoPosition *position)
{
nsCOMPtr<nsIDOMGeoPositionCoords> coords;
position->GetCoords(getter_AddRefs(coords));
if (!coords) {
return NS_ERROR_FAILURE;
}
mParentLocationProvider.Update(position);
Telemetry::Accumulate(Telemetry::GEOLOCATION_OSX_SOURCE_IS_MLS, true);
return NS_OK;
}
NS_IMETHODIMP
CoreLocationLocationProvider::MLSUpdate::NotifyError(uint16_t error)
{
mParentLocationProvider.NotifyError(error);
return NS_OK;
}
class CoreLocationObjects {
public:
nsresult Init(CoreLocationLocationProvider* aProvider) {
mLocationManager = [[CLLocationManager alloc] init];
NS_ENSURE_TRUE(mLocationManager, NS_ERROR_NOT_AVAILABLE);
mLocationDelegate = [[LocationDelegate alloc] init:aProvider];
NS_ENSURE_TRUE(mLocationDelegate, NS_ERROR_NOT_AVAILABLE);
mLocationManager.desiredAccuracy = kDEFAULT_ACCURACY;
mLocationManager.delegate = mLocationDelegate;
return NS_OK;
}
~CoreLocationObjects() {
if (mLocationManager) {
[mLocationManager release];
}
if (mLocationDelegate) {
[mLocationDelegate release];
}
}
LocationDelegate* mLocationDelegate;
CLLocationManager* mLocationManager;
};
NS_IMPL_ISUPPORTS(CoreLocationLocationProvider, nsIGeolocationProvider)
CoreLocationLocationProvider::CoreLocationLocationProvider()
: mCLObjects(nullptr), mMLSFallbackProvider(nullptr)
{
}
NS_IMETHODIMP
CoreLocationLocationProvider::Startup()
{
if (!mCLObjects) {
nsAutoPtr<CoreLocationObjects> clObjs(new CoreLocationObjects());
nsresult rv = clObjs->Init(this);
NS_ENSURE_SUCCESS(rv, rv);
mCLObjects = clObjs.forget();
}
// Must be stopped before starting or response (success or failure) is not guaranteed
[mCLObjects->mLocationManager stopUpdatingLocation];
[mCLObjects->mLocationManager startUpdatingLocation];
return NS_OK;
}
NS_IMETHODIMP
CoreLocationLocationProvider::Watch(nsIGeolocationUpdate* aCallback)
{
if (mCallback) {
return NS_OK;
}
mCallback = aCallback;
return NS_OK;
}
NS_IMETHODIMP
CoreLocationLocationProvider::Shutdown()
{
NS_ENSURE_STATE(mCLObjects);
[mCLObjects->mLocationManager stopUpdatingLocation];
delete mCLObjects;
mCLObjects = nullptr;
if (mMLSFallbackProvider) {
mMLSFallbackProvider->Shutdown();
mMLSFallbackProvider = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
CoreLocationLocationProvider::SetHighAccuracy(bool aEnable)
{
NS_ENSURE_STATE(mCLObjects);
mCLObjects->mLocationManager.desiredAccuracy =
(aEnable ? kHIGH_ACCURACY : kDEFAULT_ACCURACY);
return NS_OK;
}
void
CoreLocationLocationProvider::Update(nsIDOMGeoPosition* aSomewhere)
{
if (aSomewhere && mCallback) {
mCallback->Update(aSomewhere);
}
}
void
CoreLocationLocationProvider::NotifyError(uint16_t aErrorCode)
{
mCallback->NotifyError(aErrorCode);
}
void
CoreLocationLocationProvider::CreateMLSFallbackProvider()
{
if (mMLSFallbackProvider) {
return;
}
mMLSFallbackProvider = new MLSFallback();
mMLSFallbackProvider->Startup(new MLSUpdate(*this));
}
void
CoreLocationLocationProvider::CancelMLSFallbackProvider()
{
if (!mMLSFallbackProvider) {
return;
}
mMLSFallbackProvider->Shutdown();
mMLSFallbackProvider = nullptr;
}