--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_akn/org.eclipse.ercp.swt.s60/native/inc/javalocalref.h	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,109 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 2010 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Nokia Corporation - S60 implementation
+ *******************************************************************************/
+
+
+#ifndef JAVALOCALREF_H
+#define JAVALOCALREF_H
+
+
+
+#include <e32base.h>
+#include <jni.h>
+
+
+
+
+/**
+ * Helper class for dealing with Java local references
+ *
+ * The local reference held by the object will be deleted when the object is
+ * itself destroyed or when its Close method is called.
+ *
+ * The purpose of this object is easing deletion of local references when the
+ * code path is not straightforward (the function may exit from several places
+ * or leaves may occur). In order to protect against leaves, PushToCleanupStackL()
+ * ought ot be called.
+ */
+template<class T>
+class RJavaLocalRef
+{
+public:
+    inline RJavaLocalRef(JNIEnv* aJniEnv, T aLocalRef);
+
+    inline bool operator!() const;
+    inline operator T();
+
+    inline void Close();
+    inline void Release();
+
+private:
+    JNIEnv& iJniEnv;
+    T       iLocalRef;
+};
+
+
+
+/**
+ * Constructs an object holding a Java local reference.
+ */
+template<class T>
+inline RJavaLocalRef<T>::RJavaLocalRef(JNIEnv* aJniEnv, T aLocalRef)
+        : iJniEnv(*aJniEnv)
+        , iLocalRef(aLocalRef)
+{
+    ASSERT(aJniEnv!=NULL);
+}
+
+
+template<class T>
+inline bool RJavaLocalRef<T>::operator!() const
+{
+    return (iLocalRef==NULL);
+}
+
+
+/**
+ * Returns the held local reference
+ */
+template<class T>
+inline RJavaLocalRef<T>::operator T()
+{
+    return iLocalRef;
+}
+
+
+/**
+ * Deletes and releases the held local reference.
+ */
+template<class T>
+inline void RJavaLocalRef<T>::Close()
+{
+    iJniEnv.DeleteLocalRef(iLocalRef);
+    iLocalRef = NULL;
+}
+
+
+/**
+ * Releases the held local reference without deleting it.
+ *
+ * Subsequent calls to Close() will have no effect.
+ */
+template<class T>
+inline void RJavaLocalRef<T>::Release()
+{
+    iLocalRef = NULL;
+}
+
+
+#endif // JAVALOCALREF_H
+
+
+