62 lines
1.4 KiB
C#
62 lines
1.4 KiB
C#
// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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using System;
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using System.Diagnostics;
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using ICSharpCode.AvalonEdit.Utils;
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namespace ICSharpCode.AvalonEdit.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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sealed class UndoOperationGroup : IUndoableOperationWithContext
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{
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IUndoableOperation[] undolist;
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public UndoOperationGroup(Deque<IUndoableOperation> stack, int numops)
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{
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if (stack == null) {
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throw new ArgumentNullException("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 (int 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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for (int i = 0; i < undolist.Length; ++i) {
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undolist[i].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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for (int i = 0; i < undolist.Length; ++i) {
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stack.RunUndo(undolist[i]);
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}
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}
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public void Redo()
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{
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for (int 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 (int 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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