[core] Source-driven attribution

Implemented observer callbacks so the style knows when the source’s attribution changes and the map knows when the style’s attribution changes. Also implemented a getter for a tile source’s attribution.

Fixes #2723.

1 files changed, 6 insertions, 1 deletions

diff --git a/test/src/mbgl/test/stub_style_observer.hpp b/test/src/mbgl/test/stub_style_observer.hpp
index aa780121f5..7189fd8af4 100644
--- a/test/src/mbgl/test/stub_style_observer.hpp
+++ b/test/src/mbgl/test/stub_style_observer.hpp
@@ -6,7 +6,7 @@ using namespace mbgl;
 using namespace mbgl::style;
 
 /**
- * An implementation of style::Observer that forwards all methods to dynamically-settable lambas.
+ * An implementation of style::Observer that forwards all methods to dynamically-settable lambdas.
  */
 class StubStyleObserver : public style::Observer {
 public:
@@ -30,6 +30,10 @@ public:
         if (sourceLoaded) sourceLoaded(source);
     }
 
+    void onSourceAttributionChanged(Source& source, const std::string& attribution) override {
+        if (sourceAttributionChanged) sourceAttributionChanged(source, attribution);
+    }
+
     void onSourceError(Source& source, std::exception_ptr error) override {
         if (sourceError) sourceError(source, error);
     }
@@ -52,6 +56,7 @@ public:
     std::function<void ()> spriteLoaded;
     std::function<void (std::exception_ptr)> spriteError;
     std::function<void (Source&)> sourceLoaded;
+    std::function<void (Source&, std::string)> sourceAttributionChanged;
     std::function<void (Source&, std::exception_ptr)> sourceError;
     std::function<void (Source&, const OverscaledTileID&)> tileChanged;
     std::function<void (Source&, const OverscaledTileID&, std::exception_ptr)> tileError;