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view OrthancStone/Sources/Toolbox/UndoRedoStack.cpp @ 2006:862c572021de
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 02 Nov 2022 17:10:04 +0100 |
parents | 7053b8a0aaec |
children | 07964689cb0b |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2022 Osimis S.A., Belgium * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/>. **/ #include "UndoRedoStack.h" #include <OrthancException.h> #include <cassert> namespace OrthancStone { void UndoRedoStack::Clear(UndoRedoStack::Stack::iterator from) { for (Stack::iterator it = from; it != stack_.end(); ++it) { assert(*it != NULL); delete *it; } stack_.erase(from, stack_.end()); } UndoRedoStack::UndoRedoStack() : current_(stack_.end()) { } UndoRedoStack::~UndoRedoStack() { Clear(stack_.begin()); } void UndoRedoStack::Add(ICommand* command) { if (command == NULL) { throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); } Clear(current_); stack_.push_back(command); current_ = stack_.end(); } void UndoRedoStack::Undo() { if (current_ != stack_.begin()) { --current_; assert(*current_ != NULL); (*current_)->Undo(); } } void UndoRedoStack::Redo() { if (current_ != stack_.end()) { assert(*current_ != NULL); (*current_)->Redo(); ++current_; } } }