[core] Introduce `style::LayerProperties` interface and its implementations

1 files changed, 17 insertions, 0 deletions

diff --git a/src/mbgl/style/layers/line_layer_properties.hpp b/src/mbgl/style/layers/line_layer_properties.hpp
index 33d7eddbe8..5fcbecf3be 100644
--- a/src/mbgl/style/layers/line_layer_properties.hpp
+++ b/src/mbgl/style/layers/line_layer_properties.hpp
@@ -3,6 +3,8 @@
 #pragma once
 
 #include <mbgl/style/types.hpp>
+#include <mbgl/style/layer_properties.hpp>
+#include <mbgl/style/layers/line_layer.hpp>
 #include <mbgl/style/layout_property.hpp>
 #include <mbgl/style/paint_property.hpp>
 #include <mbgl/style/properties.hpp>
@@ -102,5 +104,20 @@ class LinePaintProperties : public Properties<
     LineGradient
 > {};
 
+class LineLayerProperties final : public LayerProperties {
+public:
+    explicit LineLayerProperties(Immutable<LineLayer::Impl>);
+    LineLayerProperties(
+        Immutable<LineLayer::Impl>,
+        CrossfadeParameters,
+        LinePaintProperties::PossiblyEvaluated);
+    ~LineLayerProperties() override;
+
+    const LineLayer::Impl& layerImpl() const;
+    // Data members.
+    CrossfadeParameters crossfade;
+    LinePaintProperties::PossiblyEvaluated evaluated;
+};
+
 } // namespace style
 } // namespace mbgl