java-fx-samples/src/moviedatabase/LayoutController.java

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package moviedatabase;

import java.net.URL;
import java.util.Random;
import java.util.ResourceBundle;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.control.SelectionMode;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;

/**
 * FXML Controller class
 *
 * @author mschw
 */
public class LayoutController implements Initializable {

    @FXML
    private ListView<Item> lvItems;
    @FXML
    private Label lblOnStock;
    @FXML
    private Label lblKost;
    @FXML
    private Label lblID;
    @FXML
    private Button btnNew;

    @FXML
    private CheckBox cbRand;

    public static ObservableList<Item> obsItems = FXCollections.observableArrayList();

    /**
     * Initializes the controller class.
     */
    @Override
    public void initialize(URL url, ResourceBundle rb) {
        if (obsItems.isEmpty()) {
            obsItems.add(new Item("TestItem", 1, 50, 200));
            obsItems.add(new Item("Prozessoren", 2, 150, 20));
            obsItems.add(new Item("Mütze", 3, 15, 30));
        }
/*
        obsItems.addListener((ListChangeListener.Change<? extends Item> c) -> {
            this.lvItems.refresh();
        });
*/
        lvItems.getSelectionModel().setSelectionMode(SelectionMode.SINGLE);
        lvItems.setItems(obsItems);
        lvItems.refresh();
    }

    @FXML
    private void handleNew(ActionEvent event) {
        if (cbRand.isSelected()) {
            obsItems.add(new Item(
                    getRandomName(),
                    new Random().nextInt(),
                    new Random().nextInt(),
                    new Random().nextInt()));
        } else {
            Main.changeScene("AddLayout.fxml", event, this.getClass());
        }
    }

    @FXML
    private void handleMouseClickedItems(MouseEvent event) {
        Item i = lvItems.getSelectionModel().getSelectedItem();
        if (i != null) {
            System.out.println(i);
            lblID.setText("ID: " + i.getId());
            lblKost.setText("Kosten: " + i.getKost());
            lblOnStock.setText("Auf lager: " + i.getOnStock());
        }
    }

    @FXML
    private void handleDelete(ActionEvent event) {
        Item i;
        if ((i = lvItems.getSelectionModel().getSelectedItem()) != null) {
            obsItems.remove(i);
        }
    }

    private String getRandomName() {
        String pool = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890";
        String result = "";
        for (int i = 0; i < 10; i++) {
            result += pool.charAt(new Random().nextInt(pool.length()));
        }
        return result;
    }

    @FXML
    private void handleKeyPressedItems(KeyEvent event) {
        Item i = lvItems.getSelectionModel().getSelectedItem();
        if (i != null) {
            System.out.println(i);
            lblID.setText("ID: " + i.getId());
            lblKost.setText("Kosten: " + i.getKost());
            lblOnStock.setText("Auf lager: " + i.getOnStock());
        }
    }

}