1 /* 2 Copyright (C) 2010-2014 Kristian Duske 3 4 This file is part of TrenchBroom. 5 6 TrenchBroom is free software: you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation, either version 3 of the License, or 9 (at your option) any later version. 10 11 TrenchBroom is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with TrenchBroom. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #ifndef TrenchBroom_UndoableCommand 21 #define TrenchBroom_UndoableCommand 22 23 #include "SharedPointer.h" 24 #include "View/Command.h" 25 26 namespace TrenchBroom { 27 namespace View { 28 class MapDocumentCommandFacade; 29 30 class UndoableCommand : public Command { 31 public: 32 typedef std::shared_ptr<UndoableCommand> Ptr; 33 public: 34 UndoableCommand(CommandType type, const String& name); 35 virtual ~UndoableCommand(); 36 37 virtual bool performUndo(MapDocumentCommandFacade* document); 38 39 bool isRepeatDelimiter() const; 40 bool isRepeatable(MapDocumentCommandFacade* document) const; 41 UndoableCommand::Ptr repeat(MapDocumentCommandFacade* document) const; 42 43 virtual bool collateWith(UndoableCommand::Ptr command); 44 private: 45 virtual bool doPerformUndo(MapDocumentCommandFacade* document) = 0; 46 47 virtual bool doIsRepeatDelimiter() const; 48 virtual bool doIsRepeatable(MapDocumentCommandFacade* document) const = 0; 49 virtual UndoableCommand::Ptr doRepeat(MapDocumentCommandFacade* document) const; 50 51 virtual bool doCollateWith(UndoableCommand::Ptr command) = 0; 52 public: // this method is just a service for DocumentCommand and should never be called from anywhere else 53 virtual size_t documentModificationCount() const; 54 }; 55 } 56 } 57 58 #endif /* defined(TrenchBroom_UndoableCommand) */ 59