Initial commit

Library/PackageCache/com.unity.2d.animation@3.2.6/Editor/SkinningModule/IMGUI/UnselectTool.cs

@@ -0,0 +1,33 @@
+using System;
+using UnityEngine;
+
+namespace UnityEditor.U2D.Animation
+{
+    internal class UnselectTool<T>
+    {
+        private Unselector<T> m_Unselector = new Unselector<T>();
+        public ICacheUndo cacheUndo { get; set; }
+        public ISelection<T> selection
+        {
+            get { return m_Unselector.selection; }
+            set { m_Unselector.selection = value; }
+        }
+        public Action onUnselect = () => {};
+
+        public void OnGUI()
+        {
+            Debug.Assert(cacheUndo != null);
+            Debug.Assert(selection != null);
+
+            var e = Event.current;
+
+            if (selection.Count > 0 && e.type == EventType.MouseDown && e.button == 1 && !e.alt)
+            {
+                cacheUndo.BeginUndoOperation(TextContent.clearSelection);
+                m_Unselector.Select();
+                e.Use();
+                onUnselect.Invoke();
+            }
+        }
+    }
+}