ClickNotifier.cs

using UnityEngine;
using UnityEngine.EventSystems;
using System.Collections;
using UI;

public class ClickNotifier : MonoBehaviour, IPointerClickHandler, IPointerHoverHandler, IPointerExitHandler {

    public delegate void NotificationEvent( PointerEventData eventData );

    public NotificationEvent clickNotificationEvent;
    public NotificationEvent hoverNotificationEvent;
    public NotificationEvent exitNotificationEvent;


    public void OnPointerClick(UnityEngine.EventSystems.PointerEventData eventData )
    {
        
        if (clickNotificationEvent != null) {
            clickNotificationEvent (eventData);
        }
    }

    public void OnPointerHover (UnityEngine.EventSystems.PointerEventData eventData) {
        //Debug.Log ("Hover");
        if (hoverNotificationEvent != null) {
            hoverNotificationEvent (eventData);
        }
    }

    public void OnPointerExit (UnityEngine.EventSystems.PointerEventData eventData) {
        if (exitNotificationEvent != null) {
            exitNotificationEvent (eventData);
        }
    }

}