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Packages/com.unity.renderstreaming@3.1.0-exp.9/Editor/ReorderableListField.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEditorInternal;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace Unity.RenderStreaming.Editor
+{
+    // todo(kazuki): workaround.
+    // ListView.reorderMode is not supported on Unity 2020.3.
+
+    internal class ReorderableListField : IMGUIContainer
+    {
+        private readonly ReorderableList reorderable;
+
+        public ReorderableListField(SerializedProperty property, string label)
+        {
+            reorderable = new ReorderableList(property.serializedObject, property)
+            {
+                drawElementCallback = (rect, index, isActive, isFocused) => EditorGUI.PropertyField(rect, property.GetArrayElementAtIndex(index)),
+                drawHeaderCallback = rect => EditorGUI.LabelField(rect, label)
+            };
+            onGUIHandler = OnGUIHandler;
+        }
+
+        void OnGUIHandler()
+        {
+            reorderable.DoLayoutList();
+            reorderable.serializedProperty.serializedObject.ApplyModifiedProperties();
+        }
+    }
+}