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#include <mbgl/style/layer.hpp>
#include <mbgl/style/layers/symbol_layer.hpp>
#include <mbgl/style/layers/background_layer.hpp>
#include <mbgl/style/layers/circle_layer.hpp>
#include <mbgl/style/layers/custom_layer.hpp>
#include <mbgl/style/layers/fill_extrusion_layer.hpp>
#include <mbgl/style/layers/fill_layer.hpp>
#include <mbgl/style/layers/heatmap_layer.hpp>
#include <mbgl/style/layers/hillshade_layer.hpp>
#include <mbgl/style/layers/line_layer.hpp>
#include <mbgl/style/layers/raster_layer.hpp>
#include <mbgl/style/layers/symbol_layer.hpp>
#include <map>
#include <memory>
#include <vector>
namespace mbgl {
namespace style {
class LayerManagerBase : public LayerManager {
public:
LayerManagerBase();
private:
void addLayerType(std::unique_ptr<LayerFactory>);
// LayerManager overrides.
std::unique_ptr<Layer> createLayer(const std::string& type, const std::string& id, const conversion::Convertible& value, conversion::Error& error) noexcept final;
std::vector<std::unique_ptr<LayerFactory>> factories;
std::map<std::string, LayerFactory*> typeToFactory;
};
LayerManagerBase::LayerManagerBase() {
addLayerType(std::make_unique<FillLayerFactory>());
addLayerType(std::make_unique<LineLayerFactory>());
addLayerType(std::make_unique<CircleLayerFactory>());
addLayerType(std::make_unique<SymbolLayerFactory>());
addLayerType(std::make_unique<RasterLayerFactory>());
addLayerType(std::make_unique<BackgroundLayerFactory>());
addLayerType(std::make_unique<HillshadeLayerFactory>());
addLayerType(std::make_unique<FillExtrusionLayerFactory>());
addLayerType(std::make_unique<HeatmapLayerFactory>());
addLayerType(std::make_unique<CustomLayerFactory>());
}
void LayerManagerBase::addLayerType(std::unique_ptr<LayerFactory> factory) {
std::string type{factory->getTypeInfo()->type};
if (!type.empty()) {
typeToFactory.emplace(std::make_pair(std::move(type), factory.get()));
}
factories.emplace_back(std::move(factory));
}
std::unique_ptr<Layer> LayerManagerBase::createLayer(const std::string& type,
const std::string& id,
const conversion::Convertible& value,
conversion::Error& error) noexcept {
auto search = typeToFactory.find(type);
if (search != typeToFactory.end()) {
auto layer = search->second->createLayer(id, value);
if (!layer) {
error.message = "Error parsing a layer of type: " + type;
}
return layer;
}
error.message = "Unsupported layer type: " + type;
return nullptr;
}
// static
LayerManager* LayerManager::get() noexcept {
static LayerManagerBase impl;
return &impl;
}
} // namespace style
} // namespace mbgl
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