datahistory.h

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#ifndef UPDRAFT_SRC_PLUGINS_TASKDECL_DATAHISTORY_H_
#define UPDRAFT_SRC_PLUGINS_TASKDECL_DATAHISTORY_H_

#include <QLinkedList>

namespace Updraft {

class TaskData;

class DataHistory {
 public:
  explicit DataHistory();

  virtual ~DataHistory();

  TaskData* getCurrent();

  const TaskData* getCurrent() const;

  bool isFirst() const;

  bool isLast() const;

  bool isMarked() const;

  bool moveForward();

  bool moveBack();

  void storeState();

  void setMark();

 private:
  typedef QLinkedList<TaskData*> DataContainer;
  typedef DataContainer::iterator DataIterator;

  DataContainer dataContainer;

  DataIterator currentItem;

  DataIterator markedItem;
};

}  // End namespace Updraft

#endif  // UPDRAFT_SRC_PLUGINS_TASKDECL_DATAHISTORY_H_