private static bool RenderObjectField <T>(ref ComponentRef <T> componentRef) where T : class
                {
                    bool       dataChanged = false;
                    GameObject gameObject  = null;

                    Component currentComponent = componentRef.GetBaseComponent();

                    //If T is a type of component can just use a normal object field
                    if (typeof(Component).IsAssignableFrom(typeof(T)))
                    {
                        Component component = EditorGUILayout.ObjectField(kLabel, currentComponent, typeof(T), true) as Component;
                        gameObject = component != null ? component.gameObject : null;
                    }
                    //Otherwise allow gameobject to be set and deal with typing when rendering index
                    else
                    {
                        gameObject = (GameObject)EditorGUILayout.ObjectField(kLabel, currentComponent != null ? currentComponent.gameObject : null, typeof(GameObject), true);
                    }

                    //Render drop down for typed components on the gameobject
                    if (gameObject != null)
                    {
                        //Show drop down to allow selecting different components on same game object
                        int         currentIndex  = 0;
                        Component[] allComponents = gameObject.GetComponents <Component>();

                        List <GUIContent> validComponentLabels = new List <GUIContent>();
                        List <Component>  validComponents      = new List <Component>();
                        List <Type>       validComponentTypes  = new List <Type>();

                        for (int i = 0; i < allComponents.Length; i++)
                        {
                            T typedComponent = allComponents[i] as T;

                            if (typedComponent != null)
                            {
                                int numberComponentsTheSameType = 0;
                                foreach (Type type in validComponentTypes)
                                {
                                    if (type == allComponents[i].GetType())
                                    {
                                        numberComponentsTheSameType++;
                                    }
                                }

                                validComponentLabels.Add(new GUIContent(allComponents[i].GetType().Name + (numberComponentsTheSameType > 0 ? " (" + numberComponentsTheSameType + ")" : "")));
                                validComponents.Add(allComponents[i]);
                                validComponentTypes.Add(allComponents[i].GetType());

                                if (allComponents[i] == currentComponent)
                                {
                                    currentIndex = validComponents.Count - 1;
                                }
                            }
                        }

                        if (validComponents.Count > 1)
                        {
                            int selectedIndex = EditorGUILayout.Popup(kLabel, currentIndex, validComponentLabels.ToArray());
                            dataChanged = currentComponent != validComponents[selectedIndex] || componentRef.GetComponentIndex() != selectedIndex;
                            if (dataChanged)
                            {
                                componentRef = new ComponentRef <T>(componentRef.GetGameObjectRef().GetSourceType(), validComponents[selectedIndex], selectedIndex);
                            }
                        }
                        else if (validComponents.Count == 1)
                        {
                            dataChanged = currentComponent != validComponents[0] || componentRef.GetComponentIndex() != 0;
                            if (dataChanged)
                            {
                                componentRef = new ComponentRef <T>(componentRef.GetGameObjectRef().GetSourceType(), validComponents[0], 0);
                            }
                        }
                        else if (validComponents.Count == 0)
                        {
                            dataChanged = currentComponent != null || componentRef.GetComponentIndex() != 0;
                            if (dataChanged)
                            {
                                componentRef = new ComponentRef <T>(componentRef.GetGameObjectRef().GetSourceType());
                            }
                        }
                    }
                    else
                    {
                        dataChanged = currentComponent != null || componentRef.GetComponentIndex() != 0;
                        if (dataChanged)
                        {
                            componentRef = new ComponentRef <T>(componentRef.GetGameObjectRef().GetSourceType());
                        }
                    }

                    return(dataChanged);
                }