[android] Sources: peer model, mutability (#6054)

platform/android/src/style/sources/vector_source.cpp

@@ -0,0 +1,53 @@
+#include "vector_source.hpp"
+
+#include "../android_conversion.hpp"
+#include "../value.hpp"
+#include "../conversion/url_or_tileset.hpp"
+
+#include <mbgl/util/variant.hpp>
+
+#include <string>
+
+namespace mbgl {
+namespace android {
+
+    VectorSource::VectorSource(jni::JNIEnv& env, jni::String sourceId, jni::Object<> urlOrTileSet)
+        : Source(
+            env,
+            std::make_unique<mbgl::style::VectorSource>(
+                jni::Make<std::string>(env, sourceId),
+                *style::conversion::convert<variant<std::string, Tileset>>(Value(env, urlOrTileSet))
+            )
+        ) {
+    }
+
+    VectorSource::VectorSource(mbgl::Map& map, mbgl::style::VectorSource& coreSource)
+        : Source(map, coreSource) {
+    }
+
+    VectorSource::~VectorSource() = default;
+
+    jni::Class<VectorSource> VectorSource::javaClass;
+
+    jni::jobject* VectorSource::createJavaPeer(jni::JNIEnv& env) {
+        static auto constructor = VectorSource::javaClass.template GetConstructor<jni::jlong>(env);
+        return VectorSource::javaClass.New(env, constructor, reinterpret_cast<jni::jlong>(this));
+    }
+
+    void VectorSource::registerNative(jni::JNIEnv& env) {
+        //Lookup the class
+        VectorSource::javaClass = *jni::Class<VectorSource>::Find(env).NewGlobalRef(env).release();
+
+        #define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
+
+        //Register the peer
+        jni::RegisterNativePeer<VectorSource>(
+            env, VectorSource::javaClass, "nativePtr",
+            std::make_unique<VectorSource, JNIEnv&, jni::String, jni::Object<>>,
+            "initialize",
+            "finalize"
+        );
+    }
+
+} // namespace android
+} // namespace mbgl