java - 由于不活动而自动关闭 JavaFX 应用程序

Question

如果用户一段时间不活动，我想关闭我的 JavaFX 应用程序。我在 Swing 中有这段代码，我想在 JavaFX 中做同样的事情。如果在指定时间内没有发生任何事件，此类会将用户重定向到登录面板。

import javax.swing.Timer;

public class AutoClose {

    private Timer timer;

    public AutoClose(JFrame centralpanel) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {

                Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {

                    @Override
                    public void eventDispatched(AWTEvent event) {
                        Object source = event.getSource();
                        if (source instanceof Component) {
                            Component comp = (Component) source;
                            Window win = null;
                            if (comp instanceof Window) {
                                win = (Window) comp;
                            } else {
                                win = SwingUtilities.windowForComponent(comp);
                            }
                            if (win == centralpanel) {
                                timer.restart();
                            }
                        }
                    }
                }, AWTEvent.KEY_EVENT_MASK | AWTEvent.MOUSE_EVENT_MASK | AWTEvent.MOUSE_MOTION_EVENT_MASK | AWTEvent.MOUSE_WHEEL_EVENT_MASK);

                timer = new Timer(3600000, new ActionListener() {
                    @Override
                    public void actionPerformed(ActionEvent e) {

                        centralpanel.dispose();

                        //Redirect to the login panel.
                        Login login = new Login();
                        login.setVisible(true);
                        timer.stop();
                        JOptionPane.showMessageDialog(null,"Connection closed due to inactivity");
                    }
                });
                timer.start();
            }
        });
    }
}

Answer 1

创建一个 PauseTransition 来触发延迟退出，并为所有重新启动转换的场景添加一个 InputEvent 的事件过滤器:

@Override
public void start(Stage primaryStage) throws IOException {
    Button button = new Button("abcde");
    StackPane root = new StackPane(button);
    Scene scene = new Scene(root, 400, 400);

    // create transition for logout
    Duration delay = Duration.seconds(10);
    PauseTransition transition = new PauseTransition(delay);
    transition.setOnFinished(evt -> logout());

    // restart transition on user interaction
    scene.addEventFilter(InputEvent.ANY, evt -> transition.playFromStart());

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

    transition.play();
}

private void logout() {
    // TODO: replace with logout code
    Platform.exit();
}

注意:使用事件过滤器很重要，因为事件可以在到达事件处理程序之前被消耗掉。