Tried to implement a global wait cursor, via scene.setCursor.

The problem is that this command doesn't set the cursor immediate. Not all applications can do every method call async.


Test application:

public class WaitCursorTest extends Application
{
private Scene scene;

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

@Override
public void start(Stage primaryStage)
{
Button butWait = new Button("Show WAIT cursor");
butWait.setOnAction(e ->
{
scene.setCursor(Cursor.WAIT);

try
{
Thread.sleep(5000);
}
catch (Exception ex)
{
//ignore
}
finally
{
scene.setCursor(Cursor.DEFAULT);
}
});

BorderPane panButton = new BorderPane();
panButton.setCenter(butWait);

scene = new Scene(panButton, 800, 600);

primaryStage.setScene(scene);
primaryStage.setTitle("JavaFX FlowPane Test");
primaryStage.show();
}

}

Same or similar was possible with Swing without problems:

public class WaitCursorSwingTest extends JFrame
{
public static void main(String[] args)
{
new WaitCursorSwingTest();
}

public WaitCursorSwingTest()
{
BorderLayout blMain = new BorderLayout();

JButton butWait = new JButton("Show WAIT cursor");
butWait.addActionListener(l ->
{
getGlassPane().setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
getGlassPane().setVisible(true);

try
{
Thread.sleep(5000);
}
catch (Exception ex)
{
//ignore
}
finally
{
getGlassPane().setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
getGlassPane().setVisible(false);
}
});

FlowLayout flCenter = new FlowLayout();

JPanel panCenter = new JPanel(flCenter);
panCenter.add(butWait);

setLayout(blMain);
add(panCenter);

setSize(800, 600);
setLocationRelativeTo(null);
setVisible(true);
}

}