#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>

#import "MGLAnnotation.h"

NS_ASSUME_NONNULL_BEGIN

/**
 The MGLUserLocation class defines a specific type of annotation that identifies
 the user’s current location. You do not create instances of this class
 directly. Instead, you retrieve an existing MGLUserLocation object from the
 `userLocation` property of the map view displayed in your application.
 */
@interface MGLUserLocation : NSObject <MGLAnnotation>

#pragma mark Determining the User’s Position

/**
 The current location of the device. (read-only)

 This property contains `nil` if the map view is not currently showing the user
 location or if the user’s location has not yet been determined.
 */
@property (nonatomic, readonly, nullable) CLLocation *location;

/** 
 A Boolean value indicating whether the user’s location is currently being
 updated. (read-only)
 */
@property (nonatomic, readonly, getter=isUpdating) BOOL updating;

/**
 The heading of the user location. (read-only)
 
 This property is `nil` if the user location tracking mode is not 
 `MGLUserTrackingModeFollowWithHeading`.
 */
@property (nonatomic, readonly, nullable) CLHeading *heading;

#pragma mark Accessing the User Annotation Text

/** The title to display for the user location annotation. */
@property (nonatomic, copy) NSString *title;

/** The subtitle to display for the user location annotation. */
@property (nonatomic, copy, nullable) NSString *subtitle;

@end

NS_ASSUME_NONNULL_END