Java: Double-Click a JSlider to Reset

Question

I have a JSlider that sets the speed of my metronome, from 40 - 200, where 120 is the default, in the middle.

When the user clicks the metronome button, the metronome plays at the speed displayed on the JSlider - the user drags the slider to the right, the speed of the metronome increases, and it decreases if they slide it to the left.

How do I add functionality so that if the user double-clicks on the JSlider button, it defaults back to 120 - in the middle?

Here is my code:

public Metronome() {
    tempoChooser = new JSlider();
    metronomeButton = new JToggleButton();

    JLabel metText = new JLabel("Metronome:");
    add(metText);

    ...

    tempoChooser.setMaximum(200);
    tempoChooser.setMinimum(40);
    tempoChooser.addChangeListener(new javax.swing.event.ChangeListener() {
        public void stateChanged(javax.swing.event.ChangeEvent evt) {
            tempoChooserStateChanged(evt);
        }
    });
    add(tempoChooser);
    ...
    }

private void tempoChooserStateChanged(javax.swing.event.ChangeEvent evt) {
    final int tempo = tempoChooser.getValue();
    if (((JSlider) evt.getSource()).getValueIsAdjusting()) {
        setMetronomeButtonText(tempo);
    } else {
        processTempoChange(tempo);
    }
}

thanks in advance!

Answer 1

This should help you out: http://docs.oracle.com/javase/tutorial/uiswing/events/mouselistener.html

You need to read up on that and implement MouseListener. You can use int getClickCount() to count how many times the user has clicked, which will help you read double clicks.

Hope this helps!