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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/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 <memory>
#include <vector>
namespace mbgl {
namespace style {
class LayerManagerBase : public LayerManager {
public:
LayerManagerBase();
private:
// 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;
};
LayerManagerBase::LayerManagerBase() {
factories.emplace_back(std::unique_ptr<LayerFactory>(new FillLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new LineLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new CircleLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new SymbolLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new RasterLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new BackgroundLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new HillshadeLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new FillExtrusionLayerFactory));
factories.emplace_back(std::unique_ptr<LayerFactory>(new HeatmapLayerFactory));
}
std::unique_ptr<Layer> LayerManagerBase::createLayer(const std::string& type,
const std::string& id,
const conversion::Convertible& value,
conversion::Error& error) noexcept {
for (const auto& factory: factories) {
if (factory->supportsType(type)) {
auto layer = factory->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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