1 files changed, 34 insertions, 0 deletions
diff --git a/src/mbgl/style/style_layer_group.cpp b/src/mbgl/style/style_layer_group.cpp
new file mode 100644
index 0000000000..0ca0fa0cce
--- /dev/null
+++ b/src/mbgl/style/style_layer_group.cpp
@@ -0,0 +1,34 @@
+#include <mbgl/style/style_layer_group.hpp>
+
+namespace mbgl {
+
+void StyleLayerGroup::setClasses(const std::vector<std::string> &class_names, timestamp now,
+                                 const PropertyTransition &defaultTransition) {
+    for (const util::ptr<StyleLayer> &layer : layers) {
+        if (layer) {
+            layer->setClasses(class_names, now, defaultTransition);
+        }
+    }
+}
+
+void StyleLayerGroup::updateProperties(float z, timestamp t) {
+    for (const util::ptr<StyleLayer> &layer: layers) {
+        if (layer) {
+            layer->updateProperties(z, t);
+        }
+    }
+}
+
+bool StyleLayerGroup::hasTransitions() const {
+    for (const util::ptr<const StyleLayer> &layer: layers) {
+        if (layer) {
+            if (layer->hasTransitions()) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+
+}