undo_action.h

Go to the documentation of this file.

#ifndef YAZE_APP_EDITOR_CORE_UNDO_ACTION_H_
#define YAZE_APP_EDITOR_CORE_UNDO_ACTION_H_
 
#include <cstddef>
#include <string>
 
#include "absl/status/status.h"
 
namespace yaze {
namespace editor {
 
class UndoAction {
 public:
  virtual ~UndoAction() = default;
 
  virtual absl::Status Undo() = 0;
  virtual absl::Status Redo() = 0;
 
  virtual std::string Description() const = 0;
 
  virtual size_t MemoryUsage() const { return 0; }
 
  virtual bool CanMergeWith(const UndoAction& /*prev*/) const { return false; }
 
  virtual void MergeWith(UndoAction& /*prev*/) {}
};
 
}  // namespace editor
}  // namespace yaze
 
#endif  // YAZE_APP_EDITOR_CORE_UNDO_ACTION_H_