using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using AX.MessageSystem;

public class OperatingHints : MonoBehaviour {
    /// <summary>
    /// 提示框
    /// </summary>
    float alp;
    private CanvasGroup canvas;
    private float alpa = 0.1f;
    private bool why = false;
    void Start()
    {
        MessageDispatcher.AddListener("Operatinghints", Operating);
        this.gameObject.SetActive(false);
    }
    void Update()
    {
        if (why == true)
        {
            alp = canvas.alpha;
            alp -= Time.deltaTime * alpa;
            canvas.alpha = alp;
            if (canvas.alpha <= 0)
            {
                this.gameObject.SetActive(false);
                why = false;
            }
        }
    }
     void Operating( IMessage message)
    {
         this.gameObject.SetActive(true);
         if (message.Sender != null)
         {
             alpa = (float)message.Sender;
         }
         else
         {
             alpa = 0.5f;
         }
        this.transform.SetAsLastSibling();
         SetOperatingHints(message.Data.ToString());
    }
    public void SetOperatingHints(string str)
    {
        canvas = this.gameObject.GetComponent<CanvasGroup>();
        this.gameObject.transform.Find("Text").GetComponent<Text>().text = str;
        canvas.alpha = 1;
        why = true;
    }
    void OnDestroy()
    {
        MessageDispatcher.RemoveListener("Operatinghints", Operating);
    }
}