Using QDataWidgetMapper in ItemDetailMapper to work with the model data (current index of the TableView).

views/itemdetailmapper.h

@@ -1,21 +1,48 @@
 #ifndef ITEMDETAILMAPPER_H
 #define ITEMDETAILMAPPER_H
 
+#include <QDataWidgetMapper>
 #include <QWidget>
 
 class QLabel;
 class QLineEdit;
 class QDoubleSpinBox;
 class QSpinBox;
+class QPushButton;
+class QAbstractItemModel;
+class QItemSelectionModel;
+class QTableView;
 
 class ItemDetailMapper : public QWidget {
   Q_OBJECT
  public:
   explicit ItemDetailMapper(QWidget* parent = nullptr);
 
+  void setModelMappings(QTableView* tableView);
+
+  bool submit();
+  void revert();
+
  signals:
 
+ private slots:
+  void onCurrentIndexChanged(const QModelIndex& current, const QModelIndex& previous);
+  void rowsInserted(const QModelIndex& parent, int start, int end);
+  void rowsRemoved(const QModelIndex& parent, int start, int end);
+  void toPrevious();
+  void toNext();
+  void updateButtons(int row);
+
  private:
+  /// *** members ***
+  /// Model stuff
+  QTableView* m_tableView               = nullptr;
+  QAbstractItemModel* m_model           = nullptr;
+  QItemSelectionModel* m_selectionModel = nullptr;
+
+  std::unique_ptr<QDataWidgetMapper> m_mapper;
+
+  /// GUI elements
   QLabel* m_nameLabel   = nullptr;
   QLineEdit* m_nameEdit = nullptr;
 
@@ -30,6 +57,9 @@ class ItemDetailMapper : public QWidget {
 
   QLabel* m_factorLabel       = nullptr;
   QDoubleSpinBox* m_factorBox = nullptr;
+
+  QPushButton* m_nextButton;
+  QPushButton* m_previousButton;
 };
 
 #endif  // ITEMDETAILMAPPER_H