Move JNI bindings code from mapbox-gl-native to this repo. (#301)

MapboxGLAndroidSDK/src/cpp/asset_manager_file_source.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <mbgl/storage/file_source.hpp>
+
+#include "asset_manager.hpp"
+
+#include <jni/jni.hpp>
+
+namespace mbgl {
+
+namespace util {
+template <typename T> class Thread;
+} // namespace util
+
+class AssetManagerFileSource : public FileSource {
+public:
+    AssetManagerFileSource(jni::JNIEnv&, const jni::Object<android::AssetManager>&);
+    ~AssetManagerFileSource() override;
+
+    std::unique_ptr<AsyncRequest> request(const Resource&, Callback) override;
+    bool canRequest(const Resource&) const override;
+
+private:
+    class Impl;
+
+    jni::Global<jni::Object<android::AssetManager>> assetManager;
+    std::unique_ptr<util::Thread<Impl>> impl;
+};
+
+} // namespace mbgl