(ded4a3e0a) v0.9.0.7

2019-06-25 16:00:44 +03:00
parent e5ae622c77
commit 4a51db77b5
1777 changed files with 421528 additions and 917 deletions
@@ -0,0 +1,84 @@
+// MonoGame - Copyright (C) The MonoGame Team
+// This file is subject to the terms and conditions defined in
+// file 'LICENSE.txt', which is part of this source code package.
+
+using System.Collections.Generic;
+using System.Linq;
+
+namespace MonoGame.Tools.Pipeline
+{        
+    /// <summary>
+    /// Represents a stack of undo/redo-able actions.
+    /// </summary>
+    public class ActionStack
+    {
+        private readonly PipelineController _controller;
+        private readonly List<IProjectAction> _undoStack;
+        private readonly List<IProjectAction> _redoStack;
+
+        public bool CanUndo { get; private set; }
+        public bool CanRedo { get; private set; }
+
+        public ActionStack(PipelineController controller)
+        {
+            _controller = controller;
+            _undoStack = new List<IProjectAction>();
+            _redoStack = new List<IProjectAction>();
+        }
+
+        public void Add(IProjectAction action)
+        {
+            _undoStack.Add(action);
+
+            if (_redoStack.Count > 0)
+                _redoStack.Clear();
+
+            Update();
+        }
+
+        public void Undo()
+        {
+            if (!_undoStack.Any())
+                return;
+
+            var action = _undoStack.Last();
+            if (action.Undo())
+            {
+                _undoStack.Remove(action);
+                _redoStack.Add(action);
+            }
+
+            Update();
+        }
+
+        public void Redo()
+        {
+            if (!_redoStack.Any())
+                return;
+
+            var action = _redoStack.Last();
+            if (action.Do())
+            {
+                _redoStack.Remove(action);
+                _undoStack.Add(action);
+            }
+
+            Update();
+        }
+
+        public void Clear()
+        {
+            _undoStack.Clear();
+            _redoStack.Clear();
+
+            Update();
+        }
+
+        private void Update()
+        {
+            CanUndo = _undoStack.Any();
+            CanRedo = _redoStack.Any();
+            _controller.UpdateMenu();
+        }
+    }
+}