Refactor ScopedJavaRef

base/android/scoped_java_ref.cc

Index: base/android/scoped_java_ref.cc
diff --git a/base/android/scoped_java_ref.cc b/base/android/scoped_java_ref.cc
new file mode 100644
index 0000000000000000000000000000000000000000..da932f8ddd0753571ffbcaf54e9e90b614614441
--- /dev/null
+++ b/base/android/scoped_java_ref.cc
@@ -0,0 +1,47 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/android/scoped_java_ref.h"
+
+namespace base {
+namespace android {
+
+JavaRef<jobject>::JavaRef() : env_(NULL), obj_(NULL) {}
+
+JavaRef<jobject>::JavaRef(JNIEnv* env, jobject obj)
+    : env_(env),
+      obj_(obj) {
+  DCHECK_EQ(JNILocalRefType, env->GetObjectRefType(obj));
+}
+
+JavaRef<jobject>::~JavaRef() {
+}
+
+void JavaRef<jobject>::SetNewLocalRef(JNIEnv* env, jobject obj) {
+  if (obj)
+    obj = env->NewLocalRef(obj);
+  if (obj_)
+    env_->DeleteLocalRef(obj_);
+  env_ = env;
+  obj_ = obj;
+}
+
+void JavaRef<jobject>::SetNewGlobalRef(JNIEnv* env, jobject obj) {
+  if (obj)
+    obj = env->NewGlobalRef(obj);
+  if (obj_)
+    env_->DeleteGlobalRef(obj_);
+  env_ = env;
+  obj_ = obj;
+}
+
+jobject JavaRef<jobject>::ReleaseInternal() {
+  jobject obj = obj_;
+  env_ = NULL;
+  obj_ = NULL;
+  return obj;
+}
+
+}  // namespace android
+}  // namespace base