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Assets/Plugins/vInspector/VInspectorSelectionHistory.cs

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+#if UNITY_EDITOR
+using UnityEngine;
+using UnityEngine.UIElements;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEditor.ShortcutManagement;
+using System.Reflection;
+using System.Linq;
+using System.Text.RegularExpressions;
+using Type = System.Type;
+using static VInspector.Libs.VUtils;
+using static VInspector.Libs.VGUI;
+
+
+
+namespace VInspector
+{
+    public class VInspectorSelectionHistory : ScriptableSingleton<VInspectorSelectionHistory>
+    {
+        public void MoveBack()
+        {
+            var prevState = prevStates.Last();
+
+            instance.RecordUndo("VInspectorSelectionHistory.MoveBack");
+
+            prevStates.Remove(prevState);
+            nextStates.Add(curState);
+            curState = prevState;
+
+
+            ignoreThisSelectionChange = true;
+
+            prevState.selectedObjects.ToArray().SelectInInspector(frameInHierarchy: false, frameInProject: false);
+
+        }
+        public void MoveForward()
+        {
+            var nextState = nextStates.Last();
+
+            instance.RecordUndo("VInspectorSelectionHistory.MoveForward");
+
+            nextStates.Remove(nextState);
+            prevStates.Add(curState);
+            curState = nextState;
+
+
+            ignoreThisSelectionChange = true;
+
+            nextState.selectedObjects.ToArray().SelectInInspector(frameInHierarchy: false, frameInProject: false);
+
+        }
+
+        static void OnSelectionChange()
+        {
+            if (ignoreThisSelectionChange) { ignoreThisSelectionChange = false; return; }
+
+            if (curEvent.modifiers == EventModifiers.Command && curEvent.keyCode == KeyCode.Z) return;
+            if (curEvent.modifiers == (EventModifiers.Command | EventModifiers.Shift) && curEvent.keyCode == KeyCode.Z) return;
+
+            if (curEvent.modifiers == EventModifiers.Control && curEvent.keyCode == KeyCode.Z) return;
+            if (curEvent.modifiers == EventModifiers.Control && curEvent.keyCode == KeyCode.Y) return;
+
+
+            instance.RecordUndo(Undo.GetCurrentGroupName());
+
+            instance.prevStates.Add(instance.curState);
+            instance.curState = new SelectionState() { selectedObjects = Selection.objects.ToList() };
+            instance.nextStates.Clear();
+
+            if (instance.prevStates.Count > 50)
+                instance.prevStates.RemoveAt(0);
+
+        }
+
+        static bool ignoreThisSelectionChange;
+
+
+        public List<SelectionState> prevStates = new();
+        public List<SelectionState> nextStates = new();
+        public SelectionState curState;
+
+        [System.Serializable]
+        public class SelectionState { public List<Object> selectedObjects = new(); }
+
+
+
+        [InitializeOnLoadMethod]
+        static void Init()
+        {
+            Selection.selectionChanged -= OnSelectionChange;
+            Selection.selectionChanged += OnSelectionChange;
+
+
+            // var globalEventHandler = typeof(EditorApplication).GetFieldValue<EditorApplication.CallbackFunction>("globalEventHandler");
+            // typeof(EditorApplication).SetFieldValue("globalEventHandler", ClearHistories + (globalEventHandler - ClearHistories));
+
+
+            instance.curState = new SelectionState() { selectedObjects = Selection.objects.ToList() };
+
+        }
+
+
+
+
+
+        // static void ClearHistories() // just for debug
+        // {
+        //     if (curEvent.holdingAnyModifierKey) return;
+        //     if (!curEvent.isKeyDown || curEvent.keyCode != KeyCode.Y) return;
+
+        //     VInspectorSelectionHistory.instance.prevStates.Clear();
+        //     VInspectorSelectionHistory.instance.nextStates.Clear();
+
+        //     Undo.ClearAll();
+
+        //     VInspectorMenu.RepaintInspectors();
+
+        // }
+
+
+
+    }
+}
+#endif