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#import "MGLAbstractShapeSource.h"
#import "MGLFoundation.h"
#import "MGLGeometry.h"
#import "MGLTypes.h"
#import "MGLShape.h"
NS_ASSUME_NONNULL_BEGIN
@protocol MGLFeature;
/**
Data source for `MGLComputedShapeSource`. This protocol defines two optional methods for fetching
data, one based on tile coordinates, and one based on a bounding box. Classes that implement this
protocol must implement one, and only one of the methods.
*/
@protocol MGLComputedShapeSourceDataSource <NSObject>
@optional
/**
Fetch features for a tile. This will not be called on the main queue, it will be called on the caller's requestQueue.
@param x tile X coordinate
@param y tile Y coordinate
@param zoomLevel tile zoom level
*/
- (NSArray<MGLShape <MGLFeature> *>*)featuresInTileAtX:(NSUInteger)x y:(NSUInteger)y zoomLevel:(NSUInteger)zoomLevel;
/**
Fetch features for a tile. This will not be called on the main queue, it will be called on the caller's requestQueue.
@param bounds The bounds to fetch data for
@param zoomLevel tile zoom level
*/
- (NSArray<MGLShape <MGLFeature> *>*)featuresInCoordinateBounds:(MGLCoordinateBounds)bounds zoomLevel:(NSUInteger)zoomLevel;
@end
/**
A source for vector data that is fetched one tile at a time. Useful for sources that are
too large to fit in memory, or are already divided into tiles, but not in Mapbox Vector Tile format.
*/
MGL_EXPORT
@interface MGLComputedShapeSource : MGLAbstractShapeSource
/**
Returns a custom vector data source initialized with an identifier, data source, and a
dictionary of options for the source according to the
<a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources-geojson">style
specification</a>.
@param identifier A string that uniquely identifies the source.
@param options An `NSDictionary` of options for this source.
*/
- (instancetype)initWithIdentifier:(NSString *)identifier options:(nullable NS_DICTIONARY_OF(MGLShapeSourceOption, id) *)options NS_DESIGNATED_INITIALIZER;
/**
An object that implements the `MGLComputedShapeSource` protocol that will be queried for tile data.
*/
@property (nonatomic, weak, nullable) id<MGLComputedShapeSourceDataSource> dataSource;
/**
A queue that calls to the data source will be made on.
*/
@property (nonatomic, readonly) NSOperationQueue *requestQueue;
@end
NS_ASSUME_NONNULL_END
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