[core] move *Observers to their own files

1 files changed, 3 insertions, 11 deletions

diff --git a/src/mbgl/sprite/sprite_store.hpp b/src/mbgl/sprite/sprite_store.hpp
index 995cb81900..50f74e174d 100644
--- a/src/mbgl/sprite/sprite_store.hpp
+++ b/src/mbgl/sprite/sprite_store.hpp
@@ -11,19 +11,12 @@
 namespace mbgl {
 
 class FileSource;
+class SpriteStoreObserver;
 
 class SpriteStore : private util::noncopyable {
 public:
     using Sprites = std::map<std::string, std::shared_ptr<const SpriteImage>>;
 
-    class Observer {
-    public:
-        virtual ~Observer() = default;
-
-        virtual void onSpriteLoaded() {};
-        virtual void onSpriteError(std::exception_ptr) {};
-    };
-
     SpriteStore(float pixelRatio);
     ~SpriteStore();
 
@@ -35,7 +28,7 @@ public:
 
     void dumpDebugLogs() const;
 
-    void setObserver(Observer* observer);
+    void setObserver(SpriteStoreObserver* observer);
 
     // Adds/replaces a Sprite image.
     void setSprite(const std::string&, std::shared_ptr<const SpriteImage> = nullptr);
@@ -63,8 +56,7 @@ private:
 
     bool loaded = false;
 
-    Observer nullObserver;
-    Observer* observer = &nullObserver;
+    SpriteStoreObserver* observer = nullptr;
 
     // Lock for sprites and dirty maps.
     std::mutex mutex;