bool callJSDelegate(TableView* table, ssize_t idx, std::string jsFunctionName, jsval& retVal)
    {
        js_proxy_t * p = jsb_get_native_proxy(table);
        if (!p) return false;
        
        JSContext* cx = ScriptingCore::getInstance()->getGlobalContext();
        bool hasAction;
        JS::RootedValue temp_retval(cx);
        jsval dataVal[2];
        dataVal[0] = OBJECT_TO_JSVAL(p->obj);
        dataVal[1] = ssize_to_jsval(cx,idx);
        
        JSObject* obj = _JSTableViewDataSource;
        JSAutoCompartment ac(cx, obj);
        
        if (JS_HasProperty(cx, obj, jsFunctionName.c_str(), &hasAction) && hasAction)
        {
            if(!JS_GetProperty(cx, obj, jsFunctionName.c_str(), &temp_retval))
            {
                return false;
            }
            
            if(temp_retval == JSVAL_VOID)
            {
                return false;
            }

            bool ret = JS_CallFunctionName(cx, obj, jsFunctionName.c_str(),
                                2, dataVal, &retVal);
            return ret == true ? true : false;
        }
        return false;
    }
    bool callJSDelegate(TableView* table, std::string jsFunctionName, JS::MutableHandleValue retVal)
    {
        js_proxy_t * p = jsb_get_native_proxy(table);
        if (!p) return false;
        
        JSContext* cx = ScriptingCore::getInstance()->getGlobalContext();
        
        bool hasAction;
        JS::RootedValue temp_retval(cx);
        jsval dataVal = OBJECT_TO_JSVAL(p->obj);
        
        JS::RootedObject obj(cx, _JSTableViewDataSource);
        JSAutoCompartment ac(cx, obj);
        
        if (JS_HasProperty(cx, obj, jsFunctionName.c_str(), &hasAction) && hasAction)
        {
            if(!JS_GetProperty(cx, obj, jsFunctionName.c_str(), &temp_retval))
            {
                return false;
            }
            if(temp_retval == JSVAL_VOID)
            {
                return false;
            }

            JS_CallFunctionName(cx, obj, jsFunctionName.c_str(),
                                JS::HandleValueArray::fromMarkedLocation(1, &dataVal), retVal);
            return true;
        }
        return false;
    }