enable/disable button

src/gui/mainwindow.cpp

@@ -6,19 +6,14 @@
 
 #include <regex>
 
+#include <QItemSelectionModel>
+
 constexpr int STATUSBAR_TIMEOUT = 5000;
 
 MainWindow::MainWindow()
 {
     ui_.setupUi(this);
 
-    connect(ui_.actionQuit, &QAction::triggered, qApp, QApplication::quit);
-    connect(ui_.actionEditSeller, &QAction::triggered, this,
-            &MainWindow::on_actionEditSeller_triggered);
-    connect(ui_.sellerNoEdit, &QLineEdit::returnPressed, this,
-            &MainWindow::on_sellerNoEdit_checkSellerNo);
-    connect(ui_.paidButton, &QPushButton::clicked, this, &MainWindow::on_paidButton_triggered);
-
     marketplace_ = std::make_unique<Marketplace>();
     marketplace_->loadFromDb();
     statusBar()->showMessage("Gespeicherte Daten wurden geladen.", STATUSBAR_TIMEOUT);
@@ -26,6 +21,16 @@ MainWindow::MainWindow()
     BasketModel* model = new BasketModel(getMarketplace(), ui_.basketView);
     ui_.basketView->setModel(model);
     ui_.basketView->setColumnHidden(0, true); // hide the uuid
+
+    connect(ui_.actionQuit, &QAction::triggered, qApp, QApplication::quit);
+    connect(ui_.actionEditSeller, &QAction::triggered, this,
+            &MainWindow::on_actionEditSeller_triggered);
+    connect(ui_.sellerNoEdit, &QLineEdit::returnPressed, this,
+            &MainWindow::on_sellerNoEdit_checkSellerNo);
+    connect(ui_.paidButton, &QPushButton::clicked, this, &MainWindow::on_paidButton_triggered);
+
+    connect(ui_.basketView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
+            &MainWindow::onBasketViewSelectionChanged);
 }
 
 void MainWindow::on_actionEditSeller_triggered()
@@ -85,4 +90,14 @@ void MainWindow::on_sellerNoEdit_checkSellerNo()
     }
 
     ui_.sellerNoEdit->clear();
+}
+
+void MainWindow::onBasketViewSelectionChanged(const QItemSelection& selected,
+                                                [[maybe_unused]] const QItemSelection& deselected)
+{
+    if (selected.size() > 0) {
+        ui_.cancelArticleButton->setEnabled(true);
+    } else {
+        ui_.cancelArticleButton->setEnabled(false);
+    }
 }

src/gui/mainwindow.h

@@ -17,6 +17,10 @@ class MainWindow : public QMainWindow
     MainWindow();
     Marketplace* getMarketplace() { return marketplace_.get(); }
 
+  private slots:
+    void onBasketViewSelectionChanged(const QItemSelection& selected,
+                                        const QItemSelection& deselected);
+
   private:
     void on_actionEditSeller_triggered();
     void on_sellerNoEdit_checkSellerNo();

src/gui/mainwindow.ui

@@ -194,7 +194,7 @@
           <item>
            <layout class="QVBoxLayout" name="verticalLayout_5">
             <item>
-             <widget class="QPushButton" name="pushButton_5">
+             <widget class="QPushButton" name="cancelArticleButton">
               <property name="enabled">
                <bool>false</bool>
               </property>
@@ -204,7 +204,7 @@
              </widget>
             </item>
             <item>
-             <widget class="QPushButton" name="pushButton_4">
+             <widget class="QPushButton" name="cancleAllArticlesButton">
               <property name="enabled">
                <bool>false</bool>
               </property>