Mercurial > hg > orthanc-stone
view Framework/Scene2DViewport/UndoStack.cpp @ 1314:9b126de2cde2 broker
Since the observer system now uses shared_ptr and many registrations are
done in the constructors, and since we cannot called shared_from_this() in
the constructors, it is mandatory to split construction from registration.
This has been done by making many ctors protected and replacing them
by factory methods that directly return shared_ptrs + added PostConstructor
method when base classes perform shared_from_this() calls too.
author | Benjamin Golinvaux <bgo@osimis.io> |
---|---|
date | Mon, 16 Mar 2020 11:19:50 +0100 |
parents | 2d8ab34c8c91 |
children |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2020 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 "UndoStack.h" #include "MeasureCommands.h" #include "../StoneException.h" namespace OrthancStone { UndoStack::UndoStack() : numAppliedCommands_(0) {} void UndoStack::PushCommand(boost::shared_ptr<MeasureCommand> command) { commandStack_.erase( commandStack_.begin() + numAppliedCommands_, commandStack_.end()); ORTHANC_ASSERT(std::find(commandStack_.begin(), commandStack_.end(), command) == commandStack_.end(), "Duplicate command"); commandStack_.push_back(command); numAppliedCommands_++; } void UndoStack::Undo() { ORTHANC_ASSERT(CanUndo(), ""); commandStack_[numAppliedCommands_ - 1]->Undo(); numAppliedCommands_--; } void UndoStack::Redo() { ORTHANC_ASSERT(CanRedo(), ""); commandStack_[numAppliedCommands_]->Redo(); numAppliedCommands_++; } bool UndoStack::CanUndo() const { return numAppliedCommands_ > 0; } bool UndoStack::CanRedo() const { return numAppliedCommands_ < commandStack_.size(); } }