代码

  1. using System.Collections.Generic;
  2. using UnityEditor;
  3. using UnityEditorInternal;
  4. using UnityEngine;
  6. namespace GameContent
  7. {
  8.     public class TestReorderlist : EditorWindow
  9.     {
  10.         [MenuItem("GM/TestReorderlist")]
  11.         public static void ShowWindow()
  12.         {
  13.             GetWindow<TestReorderlist>("TestReorderlist");
  14.         }
  16.         //所有数据列表
  17.         private List<TestElementData> mTotalDataList = new List<TestElementData>() { };
  18.         //显示n个数据
  19.         private TestElementData[] mPartDataArray = new TestElementData[5];
  20.         //显示的列表组件
  21.         private ReorderableList mReorderableList;
  23.         private void OnEnable()
  24.         {
  25.             InitTestData();
  27.             mReorderableList = new ReorderableList(mPartDataArray , typeof(TestElementData));
  28.             mReorderableList.drawHeaderCallback = ReorderableList_DrawHeaderCallback;
  29.             mReorderableList.drawElementCallback = ReorderableList_DrawElementCallback;
  30.             mReorderableList.onAddCallback = ReorderableList_OnAddCallback;
  31.             mReorderableList.onRemoveCallback = ReorderableList_OnRemoveCallback;
  32.             mReorderableList.onReorderCallbackWithDetails = ReorderableList_OnReorderCallbackWithDetails;
  33.         }
  35.         private void ReorderableList_DrawHeaderCallback(Rect rect)
  36.         {
  37.             GUI.Label(rect , "Header");
  38.         }
  40.         private void ReorderableList_DrawElementCallback(Rect rect , int index , bool isActive , bool isFocused)
  41.         {
  42.             int dataIndex = (int)mSliderValue + index;
  43.             if(dataIndex >= mTotalDataList.Count || dataIndex < 0)
  44.             {
  45.                 GUI.Label(rect , $"index={index} ; mSliderValue={mSliderValue} ; dataIndex={dataIndex} ; 索引超出范围");
  46.             }
  47.             else
  48.             {
  49.                 TestElementData elementData = mTotalDataList[dataIndex];
  50.                 GUI.Label(rect , $"index={index} ; mSliderValue={mSliderValue} ; dataIndex={dataIndex} ; name={elementData.Name}");
  51.             }
  52.         }
  54.         private void ReorderableList_OnAddCallback(ReorderableList list)
  55.         {
  56.             int dataIndex = (int)mSliderValue + mReorderableList.index;
  57.             if(dataIndex + 1 >= mTotalDataList.Count)
  58.             {
  59.                 mTotalDataList.Add(new TestElementData()
  60.                 {
  61.                     Name = "AddName" + dataIndex ,
  62.                     Value = "AddValue" + dataIndex
  63.                 });
  64.             }
  65.             else
  66.             {
  67.                 mTotalDataList.Insert(dataIndex + 1 , new TestElementData()
  68.                 {
  69.                     Name = "InsertName" + dataIndex ,
  70.                     Value = "InsertValue" + dataIndex
  71.                 });
  72.             }
  73.         }
  75.         private void ReorderableList_OnRemoveCallback(ReorderableList list)
  76.         {
  77.             int dataIndex = (int)mSliderValue + mReorderableList.index;
  78.             if(dataIndex >= 0 && dataIndex < mTotalDataList.Count)
  79.             {
  80.                 mTotalDataList.RemoveAt(dataIndex);
  81.             }
  82.         }
  84.         private void ReorderableList_OnReorderCallbackWithDetails(ReorderableList list , int oldIndex , int newIndex)
  85.         {
  86.             int oldDataIndex = (int)mSliderValue + oldIndex;
  87.             int newDataIndex = (int)mSliderValue + newIndex;
  88.             if(oldDataIndex >= 0 && oldDataIndex < mTotalDataList.Count && newDataIndex >= 0 && newDataIndex < mTotalDataList.Count)
  89.             {
  90.                 var tempData = mTotalDataList[oldDataIndex];
  91.                 mTotalDataList[oldDataIndex] = mTotalDataList[newDataIndex];
  92.                 mTotalDataList[newDataIndex] = tempData;
  93.             }
  94.         }
  97.         private float mSliderValue = 0;
  98.         private void OnGUI()
  99.         {
  100.             mReorderableList.list = mPartDataArray;
  102.             //绘制可拖拽列表
  103.             float reorderableListPosX = 0;
  104.             float reorderableListPosY = 0;
  105.             float reorderableListWidth = position.width - 20;
  106.             Rect reorderableListRect = new Rect(reorderableListPosX , reorderableListPosY , reorderableListWidth , 0);
  107.             mReorderableList.DoList(reorderableListRect);
  109.             //绘制列表的滚动条。使用mPartDataArray.Length作为滑块的大小，可以保障滑块到底部时的索引与数据索引一致。
  110.             Rect reorderableSliderRect = new Rect(reorderableListWidth , reorderableListPosY , 0 , mReorderableList.GetHeight());
  111.             int sliderMaxValue = mTotalDataList.Count > mPartDataArray.Length ? mTotalDataList.Count : mPartDataArray.Length;
  112.             mSliderValue = GUI.VerticalScrollbar(reorderableSliderRect , mSliderValue , mPartDataArray.Length , 0f , sliderMaxValue);
  113.         }
  115.         private void InitTestData()
  116.         {
  117.             mTotalDataList.Clear();
  119.             for(int i = 0 ; i < 50 ; i++)
  120.             {
  121.                 mTotalDataList.Add(new TestElementData()
  122.                 {
  123.                     Name = "Name" + i ,
  124.                     Value = "Value" + i
  125.                 });
  126.             }
  127.         }
  128.     }
  130.     public class TestElementData
  131.     {
  132.         public string Name;
  133.         public string Value;
  134.     }
  135. }

视频演示效果

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参考