Buttons functionality

mainwindow.cpp

@@ -90,3 +90,35 @@ bool MainWindow::isSelectedLineCorrect(int line)
     return line >= 0 && line < size && size > 0;
 }
 
+
+void MainWindow::on_buttonSave_clicked()
+{
+    QString fileName = QFileDialog::getSaveFileName(this, QString("Save grid"), ".", "Lua source code (*.lua)");
+    QFile file(fileName);
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
+        return;
+
+    QTextStream out(&file);
+    out << ui->gridPreview->toLuaTable();
+}
+
+
+void MainWindow::on_buttonClear_clicked()
+{
+    ui->gridPreview->clear();
+}
+
+
+void MainWindow::on_buttonDeleteLine_clicked()
+{
+    int selected = ui->listLines->currentRow();
+
+    if (!isSelectedLineCorrect(selected))
+        return;
+
+    ui->gridPreview->getCapturedProbe().ownerIndex = -1;
+    ui->gridPreview->removeLine(selected);
+
+    ui->listLines->clearSelection();
+}
+