Mercurial > hg > orthanc-stone
diff Framework/Toolbox/UndoRedoStack.cpp @ 408:6834c236b36d
reorganization
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 12 Nov 2018 14:52:10 +0100 |
parents | |
children | b70e9be013e4 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Toolbox/UndoRedoStack.cpp Mon Nov 12 14:52:10 2018 +0100 @@ -0,0 +1,89 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2018 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero 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 + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "UndoRedoStack.h" + +#include <Core/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_; + } + } +}