From c43b1b1a1ad42619d50538e43a9410db5095d8e5 Mon Sep 17 00:00:00 2001
From: rachytski <siarhei.rachytski@gmail.com>
Date: Sat, 12 May 2012 20:40:58 +0400
Subject: [PATCH] helper function for managing global refs to jobject by
 shared_ptr.

---
 android/jni/com/mapswithme/core/jni_helper.cpp | 16 ++++++++++++++++
 android/jni/com/mapswithme/core/jni_helper.hpp |  3 +++
 2 files changed, 19 insertions(+)

diff --git a/android/jni/com/mapswithme/core/jni_helper.cpp b/android/jni/com/mapswithme/core/jni_helper.cpp
index c0641c3bc2..b023b8aa39 100644
--- a/android/jni/com/mapswithme/core/jni_helper.cpp
+++ b/android/jni/com/mapswithme/core/jni_helper.cpp
@@ -73,4 +73,20 @@ namespace jni
     return g_jvm;
   }
 
+  struct global_ref_deleter
+  {
+    void operator()(jobject * ref)
+    {
+      jni::GetEnv()->DeleteGlobalRef(*ref);
+      delete ref;
+    }
+  };
+
+  shared_ptr<jobject> make_global_ref(jobject obj)
+  {
+    jobject * ref = new jobject;
+    *ref = jni::GetEnv()->NewGlobalRef(obj);
+    return shared_ptr<jobject>(ref, global_ref_deleter());
+  }
+
 } // namespace jni
diff --git a/android/jni/com/mapswithme/core/jni_helper.hpp b/android/jni/com/mapswithme/core/jni_helper.hpp
index bbc7fbd40d..48b33374dc 100644
--- a/android/jni/com/mapswithme/core/jni_helper.hpp
+++ b/android/jni/com/mapswithme/core/jni_helper.hpp
@@ -3,6 +3,7 @@
 #include <jni.h>
 
 #include "../../../../../std/string.hpp"
+#include "../../../../../std/shared_ptr.hpp"
 
 namespace jni
 {
@@ -13,4 +14,6 @@ namespace jni
   string ToString(JNIEnv * env, jstring str);
   JNIEnv * GetEnv();
   JavaVM * GetJVM();
+
+  shared_ptr<jobject> make_global_ref(jobject obj);
 }