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#pragma once
#include <mbgl/style/layer.hpp>
#include <vector>
namespace mbgl {
class Bucket;
class BucketParameters;
class GeometryTileLayer;
class Layout;
class LayoutParameters;
class RenderLayer;
/**
* @brief The LayerFactory abstract class
*
* This class is responsible for creation of the layer objects that belong to a concrete layer type.
*/
class LayerFactory {
public:
virtual ~LayerFactory() = default;
/// Returns the layer type data.
virtual const style::LayerTypeInfo* getTypeInfo() const noexcept = 0;
/// Returns a new Layer instance on success call; returns `nullptr` otherwise.
virtual std::unique_ptr<style::Layer> createLayer(const std::string& id, const style::conversion::Convertible& value) noexcept = 0;
/// Returns a new RenderLayer instance.
virtual std::unique_ptr<RenderLayer> createRenderLayer(Immutable<style::Layer::Impl>) noexcept = 0;
/// Returns a new Bucket instance on success call; returns `nullptr` otherwise.
virtual std::unique_ptr<Bucket> createBucket(const BucketParameters&, const std::vector<const RenderLayer*>&) noexcept;
/// Returns a new Layout instance on success call; returns `nullptr` otherwise.
virtual std::unique_ptr<Layout> createLayout(const LayoutParameters&, std::unique_ptr<GeometryTileLayer>, const std::vector<const RenderLayer*>&) noexcept;
protected:
optional<std::string> getSource(const style::conversion::Convertible& value) const noexcept;
bool initSourceLayerAndFilter(style::Layer*, const style::conversion::Convertible& value) const noexcept;
};
} // namespace mbgl
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