1 files changed, 38 insertions, 0 deletions
diff --git a/include/mbgl/map/map_observer.hpp b/include/mbgl/map/map_observer.hpp
new file mode 100644
index 0000000000..e0a734cf5b
--- /dev/null
+++ b/include/mbgl/map/map_observer.hpp
@@ -0,0 +1,38 @@
+#pragma once
+
+#include <cstdint>
+
+namespace mbgl {
+
+class MapObserver {
+public:
+    static MapObserver& nullObserver() {
+        static MapObserver mapObserver;
+        return mapObserver;
+    }
+
+    enum class CameraChangeMode : uint32_t {
+        Immediate,
+        Animated
+    };
+
+    enum class RenderMode : uint32_t {
+        Partial,
+        Full
+    };
+
+    virtual void onCameraWillChange(CameraChangeMode) {}
+    virtual void onCameraIsChanging() {}
+    virtual void onCameraDidChange(CameraChangeMode) {}
+    virtual void onWillStartLoadingMap() {}
+    virtual void onDidFinishLoadingMap() {}
+    virtual void onDidFailLoadingMap() {}
+    virtual void onWillStartRenderingFrame() {}
+    virtual void onDidFinishRenderingFrame(RenderMode) {}
+    virtual void onWillStartRenderingMap() {}
+    virtual void onDidFinishRenderingMap(RenderMode) {}
+    virtual void onDidFinishLoadingStyle() {}
+    virtual void onSourceDidChange() {}
+};
+
+} // namespace mbgl