Make class for adding resize handles along the border of a visual element

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Inspector/GraphInspectorView.cs

             foreach (var property in m_Graph.properties)
                 m_PropertyItems.Add(new ShaderPropertyView(m_Graph, property));
 
-            ResizeSideHandle.AddResizeHandleBorderFrame(this);
+            Add(new ResizeBorderFrame(this) { name = "resizeBorderFrame" });
         }
 
         MasterNode masterNode

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Manipulators/ResizeSideHandle.cs

 
     public class ResizeSideHandle : VisualElement
     {
-        public static void AddResizeHandleBorderFrame(VisualElement targetElement)
-        {
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.TopLeft));
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.Top));
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.TopRight));
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.Right));
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.BottomRight));
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.Bottom));
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.BottomLeft));
-            targetElement.Add(new ResizeSideHandle(targetElement, ResizeHandleAnchor.Left));
-        }
-
         VisualElement m_ResizeTarget;
 
         public ResizeSideHandle(VisualElement resizeTarget, ResizeHandleAnchor anchor)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Resources/Styles/MaterialGraph.uss

     padding-bottom: 4;
 }
 
-GraphInspectorView > .resize {
+#resizeBorderFrame > .resize {
-GraphInspectorView > .resize.vertical {
+#resizeBorderFrame > .resize.vertical {
     cursor: resize-vertical;
     height: 10;
     position-left: 10;
     margin-bottom: 0;
 }
 
-GraphInspectorView > .resize.horizontal {
+#resizeBorderFrame > .resize.horizontal {
     cursor: resize-horizontal;
     width: 10;
     position-top: 10;
     margin-right: 0;
 }
 
-GraphInspectorView > .resize.diagonal {
+#resizeBorderFrame > .resize.diagonal {
-GraphInspectorView > .resize.diagonal.top-left {
+#resizeBorderFrame > .resize.diagonal.top-left {
-GraphInspectorView > .resize.diagonal.top-right {
+#resizeBorderFrame > .resize.diagonal.top-right {
-GraphInspectorView > .resize.diagonal.bottom-left {
+#resizeBorderFrame > .resize.diagonal.bottom-left {
-GraphInspectorView > .resize.diagonal.bottom-right {
+#resizeBorderFrame > .resize.diagonal.bottom-right {
-GraphInspectorView > .resize.vertical.top {
+#resizeBorderFrame > .resize.vertical.top {
-GraphInspectorView > .resize.vertical.bottom {
+#resizeBorderFrame > .resize.vertical.bottom {
-GraphInspectorView > .resize.horzontal.left {
+#resizeBorderFrame > .resize.horzontal.left {
-GraphInspectorView > .resize.horizontal.right {
+#resizeBorderFrame > .resize.horizontal.right {
+}
+
+.reszieBorderFrame {
+    position-type: absolute;
+    position-top: 0;
+    position-right: 0;
+    position-bottom: 0;
+    position-left: 0;
 }
 
 ShaderPropertyView {

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Manipulators/ResizeBorderFrame.cs

+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Experimental.UIElements;
+using UnityEditor.ShaderGraph.Drawing;
+
+
+public class ResizeBorderFrame : VisualElement
+{
+    public ResizeBorderFrame(VisualElement target)
+    {
+        pickingMode = PickingMode.Ignore;
+
+        AddToClassList("reszieBorderFrame");
+
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.TopLeft));
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.Top));
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.TopRight));
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.Right));
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.BottomRight));
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.Bottom));
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.BottomLeft));
+        Add(new ResizeSideHandle(target, ResizeHandleAnchor.Left));
+    }
+}

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Manipulators/ResizeBorderFrame.cs.meta

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