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

dialogs/edititemdialog.cpp

@@ -4,8 +4,9 @@
 
 #include "../views/itemdetailmapper.h"
 
-EditItemDialog::EditItemDialog(QWidget* parent)
-    : AbstractDialog(parent) {}
+EditItemDialog::EditItemDialog(QTableView* tableView, QWidget* parent)
+    : AbstractDialog(parent)
+    , m_tableView(tableView) {}
 
 void EditItemDialog::createContent() {
   if (m_contentContainer) {
@@ -14,7 +15,18 @@ void EditItemDialog::createContent() {
 
   setWindowTitle(tr("Edit item..."));
 
-  m_contentContainer = new ItemDetailMapper(this);
+  m_detailMapper = new ItemDetailMapper(this);
+  m_detailMapper->setModelMappings(m_tableView);
+  m_contentContainer = m_detailMapper;
 
   m_outerLayout->insertWidget(0, m_contentContainer);
+
+void EditItemDialog::accept() {
+  m_detailMapper->submit();
+  QDialog::accept();
+}
+
+void EditItemDialog::reject() {
+  m_detailMapper->revert();
+  QDialog::reject();
 }

dialogs/edititemdialog.h

@@ -7,16 +7,26 @@ class QDoubleSpinBox;
 class QLineEdit;
 class QSpinBox;
 class QLabel;
+class QTableView;
+
+class ItemDetailMapper;
 
 class EditItemDialog : public AbstractDialog {
   Q_OBJECT
  public:
-  EditItemDialog(QWidget* parent = nullptr);
+  EditItemDialog(QTableView* tableView, QWidget* parent = nullptr);
 
   /// AbstractDialog interface
   void createContent() override;
 
+ public slots:
+  void accept() override;
+  void reject() override;
+
  private:
+  QTableView* m_tableView = nullptr;
+  ItemDetailMapper* m_detailMapper;
+
   QLabel* m_nameLabel   = nullptr;
   QLineEdit* m_nameEdit = nullptr;