allow to clear database

src/gui/mainwindow.cpp

@@ -40,6 +40,24 @@ MainWindow::MainWindow()
     setSaleModel();
 
     connect(ui_.actionQuit, &QAction::triggered, qApp, QApplication::quit);
+    connect(ui_.newAction, &QAction::triggered, this, [=]() {
+        if (marketplace_->getSellers().size() == 0 && marketplace_->getSales().size() == 0) {
+            return;
+        }
+        auto dlgResult =
+            QMessageBox(QMessageBox::Icon::Warning, "Sind Sie sicher?",
+                        "Möchten Sie wirklich alle gespeicherten Daten verwerfen?",
+                        QMessageBox::StandardButton::Yes | QMessageBox::StandardButton::No, this)
+                .exec();
+
+        if (dlgResult == QMessageBox::No)
+            return;
+
+        delete ui_.salesView->model();
+        dynamic_cast<BasketModel*>(ui_.basketView->model())->cancelSale();
+        marketplace_->clear();
+        setSaleModel();
+    });
     connect(ui_.actionEditSeller, &QAction::triggered, this,
             &MainWindow::onActionEditSellerTriggered);
     connect(ui_.sellerNoEdit, &QLineEdit::returnPressed, this,
@@ -61,7 +79,9 @@ MainWindow::MainWindow()
         auto locations = QStandardPaths::standardLocations(QStandardPaths::DataLocation);
         for (auto location : locations) {
             if (QFile::exists(location + QString("/Benutzerhandbuch.pdf"))) {
-                QDesktopServices::openUrl(QUrl(QString("file:///") + location + QString("/Benutzerhandbuch.pdf"), QUrl::TolerantMode));
+                QDesktopServices::openUrl(
+                    QUrl(QString("file:///") + location + QString("/Benutzerhandbuch.pdf"),
+                         QUrl::TolerantMode));
             }
         }
     });
@@ -298,6 +318,9 @@ void MainWindow::onImportSellerExcelActionTriggered()
     auto filename = QFileDialog::getOpenFileName(this, "Verkäufer importieren", QString(),
                                                  "Excel Dateien (*.xlsx *.xls)");
 
+    if (filename.isEmpty())
+        return;
+
     ExcelReader::readSellersFromFile(filename.toStdString(), marketplace_.get());
 }
 

src/gui/mainwindow.ui

@@ -395,6 +395,8 @@ drucken</string>
     <property name="title">
      <string>&amp;Datei</string>
     </property>
+    <addaction name="newAction"/>
+    <addaction name="separator"/>
     <addaction name="configAction"/>
     <addaction name="separator"/>
     <addaction name="actionQuit"/>
@@ -500,6 +502,11 @@ drucken</string>
     <string>Handbuch</string>
    </property>
   </action>
+  <action name="newAction">
+   <property name="text">
+    <string>Neu</string>
+   </property>
+  </action>
  </widget>
  <resources/>
  <connections/>