Listening KeyEvent from two JPanel

[Tanshaydar]

Ok, from my previous post, I managed what I wanted to do for inner issues.

But now I switched to CardLayout for a different game. I again have many JPanels and a game which itself is a JPanel too. When I switch to Game panel, due to hierarchy I cannot go to previous panel. This time I have to hold Game panel for changing settings and save/load operations too. With CardLayout, I can hold all created Panels present.

However, when I want to go back to menu, I press ESC and since only Game panel hold focus, and I cannot reach cardLayoutPanel to give the show menu command.

Is it possible to share focus?

[Fubarable]

Don't know about the others, but myself, I'd be greatly helped by your creating and posting a small example program that demonstrates your problem, an SSCCE.

[Tanshaydar]

Well, I thought it's clear but since I'm the writer I cannot judge other views, sorry.

           addKeyListener( new KeyAdapter() {

            @Override
                public void keyPressed( KeyEvent e)
                {
                    int keyCode = e.getKeyCode();
                    if( keyCode == KeyEvent.VK_ESCAPE)
                        layout.show( cardPanel, "Menu");
                }

This is the code for cardLayoutPanel. But it doesn't work because Game JPanel has the focus from here:

                public void actionPerformed( ActionEvent e) {
                    game.initialize( new Protagonist(), 1);
                    layout.show( cardPanel, "Game");
                    game.requestFocus();
                    isGameStarted = true;
                    contin.setVisible( true);
                    play.setVisible( false);

Game JPanel needs keyboard inputs, but when it holds the focus, I can't get back. If cardLayoutPanel holds the focus, then everything works great except Game panel doesn't take any input to advance in game.

[Fubarable]

It's somewhat clear, but it is very difficult to debug a problem like this from afar without code to run, test, and modify -- hence my request for an SSCCE. I believe though that there may be focus issues with CardLayout (you may want to search on this). One solution which immediately comes to mind is using key binding rather than a key listener, but again, without an SSCCE, it's hard to give specific help that I am confident is fully accurate.

[Tanshaydar]

Well I solved the issue with adding a FocusListener to the Game JPanel. When ESC is pressed, focus lost and necessary action taken.