IOHistory.h

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/Support/IO/IOHistory.h
//! @brief     Defines DatafieldIOHistory classes
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#ifndef BORNAGAIN_GUI_SUPPORT_IO_IOHISTORY_H
#define BORNAGAIN_GUI_SUPPORT_IO_IOHISTORY_H
 
#include <QDateTime>
#include <QMap>
#include <QVector>
 
class SaveLoadInterface;
 
//! Holds information about last save for items with non-XML data.
 
class DatafieldSaveInfo {
public:
    DatafieldSaveInfo()
        : m_data(nullptr)
    {
    }
 
    static DatafieldSaveInfo createSaved(const SaveLoadInterface* item);
 
    const SaveLoadInterface* item() const { return m_data; }
 
    QString fileName() const { return m_file_name; }
 
    bool wasModifiedSinceLastSave() const;
 
private:
    bool wasSavedBefore(const QDateTime& dtime) const;
 
    QDateTime m_last_saved;
    QString m_file_name;
    const SaveLoadInterface* m_data;
};
 
//! Save history information for collection of items with non-XML data.
 
class DatafieldDirHistory {
public:
    DatafieldDirHistory() = default;
 
    void markAsSaved(const SaveLoadInterface* item);
 
    bool wasModifiedSinceLastSave(const SaveLoadInterface* item);
 
    bool contains(const SaveLoadInterface* item);
 
    QStringList savedFileNames() const;
 
private:
    DatafieldSaveInfo itemInfo(const SaveLoadInterface* item) const;
 
    QVector<DatafieldSaveInfo> m_history;
};
 
//! Save history information for set of directories.
 
class DatafieldIOHistory {
public:
    bool hasHistory(const QString& dirname) const;
 
    bool wasModifiedSinceLastSave(const QString& dirname, const SaveLoadInterface* item);
 
    void setHistory(const QString& dirname, const DatafieldDirHistory& history);
 
    QStringList savedFileNames(const QString& dirname) const;
 
private:
    //!< Correspondence of directory name to save history.
    QMap<QString, DatafieldDirHistory> m_dir_history;
};
 
#endif // BORNAGAIN_GUI_SUPPORT_IO_IOHISTORY_H