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#import "MGLUserLocation_Private.h"
#import "MGLMapView.h"
NS_ASSUME_NONNULL_BEGIN
@interface MGLUserLocation ()
@property (nonatomic, weak) MGLMapView *mapView;
@end
NS_ASSUME_NONNULL_END
@implementation MGLUserLocation
- (instancetype)initWithMapView:(MGLMapView *)mapView
{
if (self = [super init])
{
_location = [[CLLocation alloc] initWithLatitude:MAXFLOAT longitude:MAXFLOAT];
_mapView = mapView;
}
return self;
}
+ (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key
{
return ! [key isEqualToString:@"location"] && ! [key isEqualToString:@"heading"];
}
+ (NS_SET_OF(NSString *) *)keyPathsForValuesAffectingCoordinate
{
return [NSSet setWithObject:@"location"];
}
- (void)setLocation:(CLLocation *)newLocation
{
if ( ! newLocation || ! CLLocationCoordinate2DIsValid(newLocation.coordinate)) return;
if ( _location && CLLocationCoordinate2DIsValid(_location.coordinate) && [newLocation distanceFromLocation:_location] == 0) return;
if (newLocation.coordinate.latitude == 0 && newLocation.coordinate.longitude == 0) return;
[self willChangeValueForKey:@"location"];
_location = newLocation;
[self didChangeValueForKey:@"location"];
}
- (BOOL)isUpdating
{
return self.mapView.userTrackingMode != MGLUserTrackingModeNone;
}
- (void)setHeading:(CLHeading *)newHeading
{
if (newHeading.trueHeading != _heading.trueHeading)
{
[self willChangeValueForKey:@"heading"];
_heading = newHeading;
[self didChangeValueForKey:@"heading"];
}
}
- (CLLocationCoordinate2D)coordinate
{
return self.location.coordinate;
}
- (NSString *)title
{
return (_title ? _title : @"You Are Here");
}
@end
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