SaveLoadInterface introduced

Redmine: #2177

GUI/coregui/mainwindow/SaveLoadInterface.cpp

+// ************************************************************************** //
+//
+//  BornAgain: simulate and fit scattering at grazing incidence
+//
+//! @file      GUI/coregui/mainwindow/SaveLoadInterface.cpp
+//! @brief     Impelments save/load interface.
+//!
+//! @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)
+//
+// ************************************************************************** //
+
+#include "SaveLoadInterface.h"
+
+SaveLoadInterface::~SaveLoadInterface() = default;
+
+QString SaveLoadInterface::fileName(const QString& projectDir) const
+{
+    const auto filename = fileName();
+    return projectDir.isEmpty() ? filename : projectDir + QStringLiteral("/") + filename;
+}

GUI/coregui/mainwindow/SaveLoadInterface.h

+// ************************************************************************** //
+//
+//  BornAgain: simulate and fit scattering at grazing incidence
+//
+//! @file      GUI/coregui/mainwindow/SaveLoadInterface.h
+//! @brief     Defines save/load interface.
+//!
+//! @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 SAVELOADINTERFACE_H
+#define SAVELOADINTERFACE_H
+
+#include "WinDllMacros.h"
+
+#include <QString>
+#include <QDateTime>
+
+//! Purely virtual interface to handle non-XML
+//! data save and load.
+
+class BA_CORE_API_ SaveLoadInterface {
+public:
+    virtual ~SaveLoadInterface();
+
+    //! Loads non-XML data from _projectDir_ and returns
+    //! success flag.
+    virtual bool load(const QString& projectDir) = 0;
+
+    //! Saves non-XML data in _projectDir_ and returns
+    //! success flag.
+    virtual bool save(const QString& projectDir) = 0;
+
+    //! Checks if object owns non-XML data
+    virtual bool containsNonXMLData() const = 0;
+
+    //! Indicates last modification timepoint.
+    virtual QDateTime lastModified() const = 0;
+
+    //! Reports file name to save/load non-XML data.
+    virtual QString fileName() const = 0;
+
+    //! Reports file name to save/load non-XML data with directory
+    //! name attached.
+    QString fileName(const QString& projectDir) const;
+};
+
+#endif // SAVELOADINTERFACE_H