using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class UI_TipsForPracticePanel : BasePanel
{
    public GameObject pptImagePrefab;
    public Transform content;
    public ScrollRect scrollRect;

    protected override void Awake()
    {
        base.Awake();
        //pptConfig = JsonManager.LoadData<PPTConfig>("pptConfig");
    }
    public override void ShowMe()
    {
        base.ShowMe();
    }
    public override void HideMe()
    {
        base.HideMe();
    }

    protected override void OnClick(string btnName)
    {
        Debug.Log(btnName);
        switch (btnName)
        {
            case "retrun_Btn":
                Bootstrap.Instance.uiManager.ShowPanel<UI_SelectModePanel>(this, E_UI_Layer.System, (panel) =>
                {
                    Debug.Log(".1");
                    Bootstrap.Instance.uiManager.HidePanel<UI_TipsForPracticePanel>();
                    StartCoroutine(RefreshScrollView());
                });
                
                //Bootstrap.Instance.uiManager.HidePanel<UI_TipsForPracticePanel>();
                break;
            default:
                List<Texture2D> textures = LoadPPTTest.LoadPPTItems(btnName);
                if (textures != null)
                {
                    DisplayPPT(textures);
                }
                StartCoroutine(RefreshScrollView());
                break;
        }
    }
    private void DisplayPPT(List<Texture2D> textures)
    {
        foreach (Transform child in content)
        {
            Destroy(child.gameObject);
        }
        Debug.LogError("texturesCount:"+textures.Count);
        foreach (var texture in textures)
        {
            RawImage rawImage = pptImagePrefab.GetComponent<RawImage>();
            RawImage image = Instantiate(rawImage, content);
            image.texture = texture;
            image.rectTransform.sizeDelta = new Vector2(texture.width, texture.height);
        }
    }

    /// <summary>
    /// 刷新右侧的滑动条
    /// </summary>
    /// <returns></returns>
    IEnumerator RefreshScrollView()
    {
        yield return null; // 等待一帧
        LayoutRebuilder.ForceRebuildLayoutImmediate(content as RectTransform);
        scrollRect.verticalNormalizedPosition = 1; // 回到顶部
    }
}