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#import "MGLSource.h"
#import "MGLTypes.h"
@class MGLTileSet;
NS_ASSUME_NONNULL_BEGIN
/**
`MGLVectorSource` is a map content source that supplies tiled vector data in
<a href="https://www.mapbox.com/vector-tiles/">Mapbox Vector Tile</a> format to
be shown on the map. The location of and metadata about the vector tiles are
defined by either an `MGLTileSet` object or an external TileJSON resource. A
vector source is added to an `MGLStyle` object along with an
`MGLVectorStyleLayer` object. The vector style layer defines the appearance of
any content supplied by the vector source.
Within each vector tile, each geometric coordinate must lie between
−1 × <var>extent</var> and
(<var>extent</var> × 2) − 1, inclusive. Any vector style
layer initialized with a vector source must have a non-`nil` value in its
`sourceLayerIdentifier` property.
*/
@interface MGLVectorSource : MGLSource
#pragma mark Initializing a Source
/**
Returns a vector source initialized with an identifier and TileJSON URL.
After initializing and configuring the source, add it to a map view’s style
using the `-[MGLStyle addSource:]` method.
The URL may be a full HTTP or HTTPS URL or, for tile sets hosted by Mapbox, a
Mapbox URL indicating a map identifier (`mapbox://<mapid>`).
@param identifier A string that uniquely identifies the source in the style to
which it is added.
@param url A URL to a TileJSON configuration file describing the source’s
contents and other metadata.
@return An initialized vector source.
*/
- (instancetype)initWithIdentifier:(NSString *)identifier URL:(NSURL *)url NS_DESIGNATED_INITIALIZER;
/**
Returns a vector source initialized an identifier and tile set.
After initializing and configuring the source, add it to a map view’s style
using the `-[MGLStyle addSource:]` method.
@param identifier A string that uniquely identifies the source in the style to
which it is added.
@param tileSet A tile set describing the source’s contents and other metadata.
@return An initialized vector source.
*/
- (instancetype)initWithIdentifier:(NSString *)identifier tileSet:(MGLTileSet *)tileSet NS_DESIGNATED_INITIALIZER;
#pragma mark Accessing a Source’s Content
/**
A URL to a TileJSON configuration file describing the source’s contents and
other metadata.
The URL may be a full HTTP or HTTPS URL or, for tile sets hosted by Mapbox, a
Mapbox URL indicating a map identifier (`mapbox://<mapid>`).
If the receiver was initialized using `-initWithIdentifier:tileSet:`, this
property is set to `nil`.
*/
@property (nonatomic, readonly, copy) NSURL *URL;
/**
A tile set describing the source’s contents and other metadata.
If the receiver was initialized using `-initWithIdentifier:URL:`, this property
is set to `nil`.
*/
@property (nonatomic, readonly, nullable) MGLTileSet *tileSet;
@end
NS_ASSUME_NONNULL_END
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