[core] Factor out setVisibility conversion

1 files changed, 19 insertions, 0 deletions

diff --git a/src/mbgl/style/layer.cpp b/src/mbgl/style/layer.cpp
index 142fe313cf..31ff5bf47a 100644
--- a/src/mbgl/style/layer.cpp
+++ b/src/mbgl/style/layer.cpp
@@ -1,6 +1,7 @@
 #include <mbgl/style/layer.hpp>
 #include <mbgl/style/layer_impl.hpp>
 #include <mbgl/style/layer_observer.hpp>
+#include <mbgl/style/conversion/constant.hpp>
 
 namespace mbgl {
 namespace style {
@@ -38,5 +39,23 @@ void Layer::setObserver(LayerObserver* observer_) {
     observer = observer_ ? observer_ : &nullObserver;
 }
 
+optional<conversion::Error> Layer::setVisibility(const conversion::Convertible& value) {
+    using namespace conversion;
+
+    if (isUndefined(value)) {
+        setVisibility(VisibilityType::Visible);
+        return nullopt;
+    }
+
+    Error error;
+    optional<VisibilityType> visibility = convert<VisibilityType>(value, error);
+    if (!visibility) {
+        return error;
+    }
+
+    setVisibility(*visibility);
+    return nullopt;
+}
+
 } // namespace style
 } // namespace mbgl