using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class DragForUI : MonoBehaviour, IInitializePotentialDragHandler, IBeginDragHandler, IEndDragHandler, IDragHandler
{

    public delegate void OnDragStartedHandler(PointerEventData eventData);
    public OnDragStartedHandler OnDragStarted;
    public delegate void OnDragCompletedHandler(PointerEventData eventData);
    public OnDragCompletedHandler OnDragCompleted;
    public delegate void OnDragHandler(PointerEventData eventData);
    public OnDragHandler OnDraging;

    public void OnBeginDrag(PointerEventData eventData)
    {
        OnDragStarted?.Invoke(eventData);
    }

    public void OnDrag(PointerEventData eventData)
    {
        OnDraging?.Invoke(eventData);
    }
    
    public void OnEndDrag(PointerEventData eventData)
    {
        OnDragCompleted?.Invoke(eventData);
    }

    public void OnInitializePotentialDrag(PointerEventData eventData)
    {
    }
}