Double Tap Key Bindings Java

Question

public void fullscreenKey(final JFrame frame)
{
    k = KeyStroke.getKeyStroke(KeyEvent.VK_F1, 0);
    getInputMap(WHEN_IN_FOCUSED_WINDOW).put(k, k.toString());
    getActionMap().put(k.toString(), new AbstractAction()
    {
        public void actionPerformed(ActionEvent e)
        {
            fullscreen(!f1, frame);
            f1 = !f1;
        }
    });  
}

Whenever I call this method into other classes, nothing happens. I can't make this method static because of getInputMap and getActionMap. I call with Main main = new Main(); main.fullscreenKey(frame); This method is called in the Main constructor. How can I call this method in other classes and have it work?

Answer 1

Not sure if this is what you're after or not

public void fullscreenKey(JComponent comp, final JFrame frame)
{
    k = KeyStroke.getKeyStroke(KeyEvent.VK_F1, 0);
    comp.getInputMap(WHEN_IN_FOCUSED_WINDOW).put(k, k.toString());
    comp.getActionMap().put(k.toString(), new AbstractAction()
    {
        public void actionPerformed(ActionEvent e)
        {
            fullscreen(!f1, frame);
            f1 = !f1;
        }
    });  
}

If you're looking for a "global" key handler instead (ie you want to handle the key stroke at anytime in your application), you could look at Toolkit.addAWTEventListener , this is very low level so it might take a little effort to it to work properly.

You could also look at the KeyboardFocusManager ( Java Global JFrame KeyListener )