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