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