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#ifndef MBGL_LAYOUT_PROPERTY
#define MBGL_LAYOUT_PROPERTY
#include <mbgl/style/property_parsing.hpp>
#include <mbgl/style/function.hpp>
#include <mbgl/util/rapidjson.hpp>
#include <utility>
namespace mbgl {
template <typename T>
class LayoutProperty {
public:
explicit LayoutProperty(T v) : value(std::move(v)) {}
void parse(const char * name, const JSValue& layout) {
if (layout.HasMember(name)) {
parsedValue = parseProperty<Function<T>>(name, layout[name]);
}
}
void calculate(const StyleCalculationParameters& parameters) {
if (parsedValue) {
value = (*parsedValue).evaluate(parameters);
}
}
void operator=(const T& v) { value = v; }
operator T() const { return value; }
optional<Function<T>> parsedValue;
T value;
};
} // namespace mbgl
#endif
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