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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef IOS_PUBLIC_PROVIDER_CHROME_BROWSER_GEOLOCATION_UPDATER_PROVIDER_H_
#define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_GEOLOCATION_UPDATER_PROVIDER_H_
#import <CoreLocation/CoreLocation.h>
#import <Foundation/Foundation.h>
#include "base/macros.h"
// GeolocationUpdater tracks the current location of the user and sends
// NSNotifications when it changes.
// The notification names and keys can be obtained using
// GeolocationUpdaterProvider.
@protocol GeolocationUpdater<NSObject>
// Returns the most recently fetched location. Returns nil if disabled.
- (CLLocation*)currentLocation;
// Prompts the user to authorize access to location information while the app is
// in use. Only affects iOS 8+.
- (void)requestWhenInUseAuthorization;
// Set the |timeout| the before the manager gives up fetching the location
// information. If a timer has already been set to stop fetching location,
// it will be reset to |timeout| seconds from now.
- (void)setStopUpdateDelay:(NSTimeInterval)timeout;
// Sets how often should the location manager check for a fresh location.
- (void)setUpdateInterval:(NSTimeInterval)interval;
// Sets the desired accuracy, distance and update interval.
// Desired Accuracy defaults to: kCLLocationAccuracyBest.
// Distance Filter defaults to: 20m.
- (void)setDesiredAccuracy:(CLLocationAccuracy)desiredAccuracy
distanceFilter:(CLLocationDistance)distanceFilter;
// Does not take into consideration whether location is disabled by the OS.
- (BOOL)isEnabled;
// Turns the geolocation updater on or off, depending on the value of flag.
// if flag is false, then no more location updates will be requested, and
// currentLocation will return nil.
- (void)setEnabled:(BOOL)flag;
@end
namespace ios {
class GeolocationUpdaterProvider {
public:
GeolocationUpdaterProvider();
virtual ~GeolocationUpdaterProvider();
// Creates a new GeolocationUpdater.
// The returned object is retained and it is the responsibility of the caller
// to release it.
virtual id<GeolocationUpdater> CreateGeolocationUpdater(bool enabled)
NS_RETURNS_RETAINED;
// Notification names:
// Name of NSNotificationCenter notification posted on user location update.
// Passes a |CLLocation| for the new location in the userInfo dictionary with
// the key returned by GetUpdateNewLocationKey().
virtual NSString* GetUpdateNotificationName();
// Name of NSNotificationCenter notification posted on when the location
// manager's stops.
virtual NSString* GetStopNotificationName();
// Name of NSNotificationCenter notification posted when the location
// manager's authorization status changes. For example when the user turns
// off Locations Services in Settings. The new status is passed as a
// |NSNumber| representing the |CLAuthorizationStatus| enum value.
virtual NSString* GetAuthorizationChangeNotificationName();
// Notification keys:
// Key used in the userInfo dictionaries of this class' notifications.
// Contains a |CLLocation *| and is used in the update notification.
virtual NSString* GetUpdateNewLocationKey();
private:
DISALLOW_COPY_AND_ASSIGN(GeolocationUpdaterProvider);
};
} // namespace ios
#endif // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_GEOLOCATION_UPDATER_PROVIDER_H_