79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System;
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using System.Diagnostics;
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using Unity.CodeEditor.Utils;
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namespace Unity.CodeEditor.Document
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{
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/// <summary>
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/// This class stacks the last x operations from the undostack and makes
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/// one undo/redo operation from it.
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/// </summary>
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internal sealed class UndoOperationGroup : IUndoableOperationWithContext
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{
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private readonly IUndoableOperation[] _undolist;
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internal UndoOperationGroup(Deque<IUndoableOperation> stack, int numops)
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{
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if (stack == null) {
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throw new ArgumentNullException(nameof(stack));
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}
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Debug.Assert(numops > 0 , "UndoOperationGroup : numops should be > 0");
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Debug.Assert(numops <= stack.Count);
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_undolist = new IUndoableOperation[numops];
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for (var i = 0; i < numops; ++i) {
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_undolist[i] = stack.PopBack();
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}
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}
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public void Undo()
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{
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foreach (var t in _undolist)
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{
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t.Undo();
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}
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}
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public void Undo(UndoStack stack)
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{
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foreach (var t in _undolist)
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{
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stack.RunUndo(t);
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}
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}
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public void Redo()
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{
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for (var i = _undolist.Length - 1; i >= 0; --i) {
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_undolist[i].Redo();
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}
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}
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public void Redo(UndoStack stack)
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{
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for (var i = _undolist.Length - 1; i >= 0; --i) {
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stack.RunRedo(_undolist[i]);
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}
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}
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}
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}
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