import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.scene.Scene;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeTableColumn;
import javafx.scene.control.TreeTableView;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class App extends Application {

	@Override
	public void start(Stage primaryStage) {
		TreeTableView<String> treeTableView = new TreeTableView<>();
		treeTableView.getSelectionModel().setCellSelectionEnabled(true);
		treeTableView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);

		TreeTableColumn<String, String> column1 = new TreeTableColumn<>("Spalte 1");
		TreeTableColumn<String, String> column2 = new TreeTableColumn<>("Spalte 2");
		TreeTableColumn<String, String> column3 = new TreeTableColumn<>("Spalte 3");
		TreeTableColumn<String, String> column4 = new TreeTableColumn<>("Spalte 4");
		TreeTableColumn<String, String> column5 = new TreeTableColumn<>("Spalte 5");

		column1.setCellValueFactory(rowDataStringCellDataFeatures -> new SimpleStringProperty("value"));
		column2.setCellValueFactory(rowDataStringCellDataFeatures -> new SimpleStringProperty("value"));
		column3.setCellValueFactory(rowDataStringCellDataFeatures -> new SimpleStringProperty("value"));
		column4.setCellValueFactory(rowDataStringCellDataFeatures -> new SimpleStringProperty("value"));
		column5.setCellValueFactory(rowDataStringCellDataFeatures -> new SimpleStringProperty("value"));

		treeTableView.getColumns().addAll(column1, column2, column3, column4, column5);

		// Root-Element (nicht sichtbar)
		TreeItem<String> root = new TreeItem<>("String");
		root.setExpanded(true);

		// 30 Zeilen hinzufügen
		for (int i = 1; i <= 30; i++) {
			TreeItem<String> item = new TreeItem<>("String");
			root.getChildren().add(item);
		}

		treeTableView.setRoot(root);
		treeTableView.setShowRoot(false); // Root nicht anzeigen

		VBox vbox = new VBox(treeTableView);
		Scene scene = new Scene(vbox, 800, 600);

		vbox.setOnKeyPressed(keyEvent -> {
			if (keyEvent.getCode() == KeyCode.DELETE) {
				root.getChildren().removeAll(treeTableView.getSelectionModel().getSelectedItems());
			}
		});

		primaryStage.setScene(scene);
		primaryStage.show();
	}

	public static void main(String[] args) {
		launch(args);
	}
}