UIDropdown.cs

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using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
 
public class UIDropdown : Dropdown
{
    [NonSerialized]
    public UIButton bl;
 
    public static UIDropdown activeInstance;
 
    public override void OnCancel(BaseEventData eventData)
    {
    }
 
    private void Update()
    {
        if (activeInstance == this && Input.GetMouseButtonDown(1))
        {
            Hide();
        }
    }
 
    protected override void OnEnable()
    {
        base.OnEnable();
        base.template.GetComponentInChildren<ScrollRect>().scrollSensitivity = UIScrollView.sensitivity;
    }
 
    protected override GameObject CreateBlocker(Canvas rootCanvas)
    {
        activeInstance = this;
        return base.CreateBlocker(rootCanvas);
    }
 
    protected override void DestroyBlocker(GameObject blocker)
    {
        activeInstance = null;
        if ((bool)bl)
        {
            UnityEngine.Object.Destroy(bl.gameObject);
            bl = null;
        }
        base.DestroyBlocker(blocker);
    }
 
    public void SetList<TValue>(string name, IList<TValue> list, Func<TValue, int, string> getName, Action<int, TValue> onChange, bool notify = true)
    {
        int index = 0;
        for (int i = 0; i < list.Count; i++)
        {
            if (getName(list[i], i) == name)
            {
                index = i;
                break;
            }
        }
        SetList(index, list, getName, onChange, notify);
    }
 
    public void SetList<TValue>(int _index, IList<TValue> list, Func<TValue, int, string> getName, Action<int, TValue> onChange, bool notify = true)
    {
        base.options.Clear();
        for (int i = 0; i < list.Count; i++)
        {
            base.options.Add(new OptionData
            {
                text = getName(list[i], i)
            });
        }
        base.onValueChanged.RemoveAllListeners();
        base.onValueChanged.AddListener(delegate(int a)
        {
            onChange(a, list[a]);
        });
        if (notify)
        {
            base.value = _index;
        }
        else
        {
            SetValueWithoutNotify(_index);
        }
        RefreshShownValue();
    }
 
    public void Next()
    {
        if (base.value < base.options.Count - 1)
        {
            base.value++;
        }
    }
 
    public void Prev()
    {
        if (base.value > 0)
        {
            base.value--;
        }
    }
}