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#pragma once
#include <mbgl/style/layer.hpp>
#include <mbgl/style/conversion.hpp>
#include <mbgl/style/conversion/constant.hpp>
#include <mbgl/style/conversion/property_value.hpp>
#include <functional>
#include <string>
namespace mbgl {
namespace style {
namespace conversion {
template <class V>
using LayoutPropertySetter = std::function<optional<Error> (Layer&, const V&)>;
template <class V>
using PaintPropertySetter = std::function<optional<Error> (Layer&, const V&, const optional<std::string>&)>;
template <class V, class L, class T, class...Args>
auto makePropertySetter(void (L::*setter)(PropertyValue<T>, const Args&...args)) {
return [setter] (Layer& layer, const V& value, const Args&...args) -> optional<Error> {
L* typedLayer = layer.as<L>();
if (!typedLayer) {
return Error { "layer doesn't support this property" };
}
Result<PropertyValue<T>> typedValue = convert<PropertyValue<T>>(value);
if (!typedValue) {
return typedValue.error();
}
(typedLayer->*setter)(*typedValue, args...);
return {};
};
}
template <class V>
optional<Error> setVisibility(Layer& layer, const V& value) {
if (isUndefined(value)) {
layer.setVisibility(VisibilityType::Visible);
return {};
}
Result<VisibilityType> visibility = convert<VisibilityType>(value);
if (!visibility) {
return visibility.error();
}
layer.setVisibility(*visibility);
return {};
}
} // namespace conversion
} // namespace style
} // namespace mbgl
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