前言

HierarchyView opens the options we found andGameObjectThe open view is the same,So we expandHierachyView is also rightGameObjectThe menu bar option is expanded,前文已经介绍过了,具体可以参考Project拓展

Hierarchy拓展

Here we create a new script to controlHierarchy拓展：

This is what we did beforeProjectExtend similar,It's just when it's passed,We need to pass an instanceIdGo in insteadguid.
具体代码如下所示：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class TestHierarchy : MonoBehaviour
{
    
    [MenuItem("GameObject/Hierarchy1", false, 0)]
    static void Test1()
    {
    
        Debug.Log("Hierarchy1");
    }
    [InitializeOnLoadMethod]
    static void InitializeOnload()
    {
    
        EditorApplication.hierarchyWindowItemOnGUI += (instanceID, rect) =>
        {
    

            if (Selection.activeObject != null && instanceID==Selection.activeObject.GetInstanceID())
            {
    
                rect.x = rect.width - 50;
                rect.width = 100;
                if (GUI.Button(rect, "delete"))
                {
    
                    //Delete game objects from the scene
                    GameObject.DestroyImmediate(Selection.activeObject);
                }
            }
        };
    }
}

重写Hierarchy菜单

If we want to completely deprecate the previous oneHierarchyThe menu thus completely uses its own customHierarchy应该怎么实现呢？
这里我们首先创建一个脚本来控制Hierarchy的重写

我们跳出HierarchyThe menu appears when you right-click,So here we need to rewrite by listening to the right click event.类似于这样：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class TestHierarchyMenu : MonoBehaviour
{
    
    [InitializeOnLoadMethod]
    static void InitOnLoad() 
    {
    
        EditorApplication.hierarchyWindowItemOnGUI += (instanceID, rect) =>
        {
    
            //Listen to the right-click event of our mouse
            if (Event.current != null&&Event.current.button==1&&Event.current.type==EventType.MouseUp) 
            {
    
                Debug.Log("Hierarchy鼠标右键抬起");
            }
        };
    }
}

We can achieve rewriting by blocking this event：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class TestHierarchyMenu : MonoBehaviour
{
    
    [InitializeOnLoadMethod]
    static void InitOnLoad() 
    {
    
        EditorApplication.hierarchyWindowItemOnGUI += (instanceID, rect) =>
        {
    
            //Listen to the right-click event of our mouse
            if (Event.current != null&&Event.current.button==1&&Event.current.type==EventType.MouseUp) 
            {
    
                Debug.Log("Hierarchy鼠标右键抬起");
                //Block native menus
                Event.current.Use();
                //弹出自定义的菜单
                ///参数1.The position and size of the popup,2.A custom menu that pops up 3.菜单命令
                EditorUtility.DisplayPopupMenu(new Rect(Event.current.mousePosition.x,Event.current.mousePosition.y,100,100),"Assets",null);
            }
        };
    }
}

我们来看一下效果：
发现弹出了Assets菜单: