优化hierarchy

即时生成和删除tab（不会做动态刷新
基本上hierarchy的性能就到这了，之后还是做点辅助工具防止1000+的栏展开吧
（重要）bug测试不完全，需要再加改进

Assets/Scripts/DynamicUI/Hierarchy/HierarchyTab.cs

@@ -14,7 +14,8 @@ namespace Ichni.Editor
         public GameElement connectedGameElement;
         public HierarchyTab parentTab;
         public List<HierarchyTab> childTabList;
-
+        public List<int> IDqueue;
+        
         public int tabLayer;
         public bool isSelected;
         public bool isExpanded;
@@ -26,10 +27,12 @@ namespace Ichni.Editor
         public Button expandButton;
         public Button gotoButton;
         public TMP_Text tabButtonText;
-        
+        public Hierarchy hierarchy;
 
         public void SetTab(GameElement targetElement, GameElement parentElement)
         {
+            
+            connectedGameElement=targetElement;
             tabButtonText.text = targetElement.elementName;
             targetElement.connectedTab = this;
             this.isExpanded = false;
@@ -41,15 +44,15 @@ namespace Ichni.Editor
                 this.tabLayer = 0;
                 this.parentTab = null;
                 this.transform.SetAsLastSibling();
-            }
-            else
-            {
+            }else{
                 this.parentTab = parentElement.connectedTab;
+                parentElement.connectedTab.childTabList.Add(this);
                 this.tabLayer = this.parentTab.tabLayer + 1;
-
-                this.parentTab.childTabList.Add(this);
+                
+               
+                
                 this.transform.SetSiblingIndex(this.parentTab.transform.GetSiblingIndex() +
-                                               GetAllChildrenCount(this.parentTab));
+                                               this.parentTab.connectedGameElement.childElementList.Count);
 
                 if (!this.parentTab.isExpanded)
                 {
@@ -59,12 +62,13 @@ namespace Ichni.Editor
 
                 for (int i = 1; i <= this.tabLayer; i++)
                 {
-                    float lineX = 10 * i;
+                    float lineX = 30 * i;
                     Instantiate(indentationLinePrefab, tabRect).GetComponent<RectTransform>().anchoredPosition = new Vector2(lineX, 0);
                 }
             }
+            
 
-            float posX = -25 + 10 * tabLayer;
+            float posX = -5 + 30 * tabLayer;
             tabMainRect.anchoredPosition = new Vector2(posX, tabMainRect.anchoredPosition.y);
 
             expandButton.onClick.AddListener(ExpandOrFold);
@@ -88,38 +92,44 @@ namespace Ichni.Editor
         private void ExpandOrFold()
         {
             this.childTabList.RemoveAll(s => s == null);
-            bool op = !isExpanded;
+            isExpanded=!isExpanded;
 
-            for (int i = 0; i < childTabList.Count; i++)
-            {
-                childTabList[i].SetExpansion(op);
+            if(isExpanded){
+                expandButton.transform.Rotate(new Vector3(0,0,180));
+                 foreach(GameElement i in connectedGameElement.childElementList){
+                    HierarchyTab a=hierarchy.GenerateTab(i,connectedGameElement);
+                    childTabList.Add(a);
+                }
+            }else{
+                expandButton.transform.Rotate(new Vector3(0,0,180));
+
+                for (int i = childTabList.Count-1; i>=0; i--)
+                {
+                    childTabList[i].SetExpansion(isExpanded);
+                }
             }
 
-            isExpanded = op;
+            
+
+        
         }
 
         private void SetExpansion(bool expand)
         {
-            if (!(expand == true && isExpanded == false))
+            if (!expand&&isExpanded)
             {
                 foreach (var tab in childTabList)
                 {
-                    tab.SetExpansion(expand);
+                    tab.SetExpansion(expand);//false
                 }
             }
 
-            if (expand)
+            if (!expand)
             {
-                gameObject.SetActive(true);
-                tabRect.localScale = Vector3.one;
-                layoutElement.ignoreLayout = false;
-            }
-            else
-            {
-                tabRect.localScale = Vector3.zero;
-                layoutElement.ignoreLayout = true;
-                gameObject.SetActive(false);
+                parentTab.childTabList.Remove(this);
+               Destroy(gameObject);
             }
+           
         }
     }
 }