1 /* 2 * Copyright 2006-2012 Stephan Aßmus <superstippi@gmx.de> 3 * Distributed under the terms of the MIT License. 4 */ 5 6 #ifndef UNDOABLE_EDIT_H 7 #define UNDOABLE_EDIT_H 8 9 #include <Referenceable.h> 10 11 class BString; 12 class EditContext; 13 14 class UndoableEdit : public BReferenceable { 15 public: 16 UndoableEdit(); 17 virtual ~UndoableEdit(); 18 19 virtual status_t InitCheck(); 20 21 virtual status_t Perform(EditContext& context); 22 virtual status_t Undo(EditContext& context); 23 virtual status_t Redo(EditContext& context); 24 25 virtual void GetName(BString& name); 26 27 virtual bool UndoesPrevious(const UndoableEdit* previous); 28 virtual bool CombineWithNext(const UndoableEdit* next); 29 virtual bool CombineWithPrevious( 30 const UndoableEdit* previous); 31 32 inline bigtime_t TimeStamp() const 33 { return fTimeStamp; } 34 35 protected: 36 bigtime_t fTimeStamp; 37 }; 38 39 typedef BReference<UndoableEdit> UndoableEditRef; 40 41 #endif // UNDOABLE_EDIT_H 42