unity 功能扩展

using System.Collections;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Threading.Tasks;
using UnityEngine;
using TMPro;
using UnityEngine.UI;

public static class ExtensionMethod
{
    public static TaskAwaiter GetAwaiter(this AsyncOperation asyncOperation)
    {
        var tcs = new TaskCompletionSource<object>();
        asyncOperation.completed += obj => { tcs.SetResult(null); };
        return ((Task)tcs.Task).GetAwaiter();
    }


    public static TextMeshProUGUI GetPlaceholder(this TMP_InputField tMP_InputField)
    {
        return tMP_InputField.placeholder.GetComponent<TextMeshProUGUI>();
    }

    public static TextMeshProUGUI Lable(this Toggle toggle)
    {
        TextMeshProUGUI textMeshProUGUI = toggle.transform.Find("Label").GetComponent<TextMeshProUGUI>();
        return textMeshProUGUI;
    }

    public static Transform ToggleContent(this Toggle toggle)
    {
        return toggle.transform.Find("Content");
    }


    public static TextMeshProUGUI Placeholder(this TMP_InputField tMP_InputField)
    {
        return tMP_InputField.placeholder.GetComponent<TextMeshProUGUI>();
    }
}