Swing unable to handle TAB key and repeated backspaces?

ZaSz · October 21, 2008, 11:02pm

I tried with FengGUI and had to code the TAB focus myself. Then I found lots of uninteresting things in FengGUI and switched to Swing thinking it would fix everything.

Is there a way that when I press Backspace and hold it, it does not only remove one letter?

Is there a way to enable TAB focus changing without having to code it myself? (Swing is supposed to handle this no??)

I really ran out of ideas…

Anyone?

Edit: Code:

frame = new JInternalFrame(); frame.setSize(200, 200); frame.setLocation(displayWidth / 2 - frame.getWidth() / 2, displayHeight / 2 - frame.getHeight() / 2); frame.setResizable(false); frame.setTitle(LanguageManager.getInstance().getMessage("login.title")); frame.setLayout(new GridLayout(6, 1)); frame.setFocusable(true); frame.setFocusTraversalKeysEnabled(true); JLabel userLabel = new JLabel(LanguageManager.getInstance().getMessage("login.label.username")); frame.getContentPane().add(userLabel); username = new JTextField(); username.setFocusTraversalKeysEnabled(true); username.setFocusable(true); frame.getContentPane().add(username); JLabel passwordLabel = new JLabel(LanguageManager.getInstance().getMessage("login.label.password")); frame.getContentPane().add(passwordLabel); password = new JPasswordField(); password.setFocusTraversalKeysEnabled(true); password.setFocusable(true); password.addKeyListener(new KeyListener(){ @Override public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_ENTER) { login(); e.consume(); } } @Override public void keyReleased(KeyEvent e) {} @Override public void keyTyped(KeyEvent e) {} }); frame.getContentPane().add(password); login = new JButton(LanguageManager.getInstance().getMessage("login.button.login")); login.addMouseListener(new MouseListener() { @Override public void mouseClicked(MouseEvent e) { login(); } @Override public void mouseEntered(MouseEvent e) {} @Override public void mouseExited(MouseEvent e) {} @Override public void mousePressed(MouseEvent e) {} @Override public void mouseReleased(MouseEvent e) {} }); frame.getContentPane().add(login); JButton quit = new JButton(LanguageManager.getInstance().getMessage("login.button.exit")); quit.addMouseListener(new MouseListener() { @Override public void mouseClicked(MouseEvent e) { GameEngine.getInstance().quit(); } @Override public void mouseEntered(MouseEvent e) {} @Override public void mouseExited(MouseEvent e) {} @Override public void mousePressed(MouseEvent e) {} @Override public void mouseReleased(MouseEvent e) {} }); frame.getContentPane().add(quit); frame.setBorder(null); frame.setVisible(true); desktop.getJDesktop().add(frame);

ZaSz · October 22, 2008, 1:54am

username.requestFocusInWindow(); isn't working, any idea on how to give focus to a component?

ZaSz · October 23, 2008, 3:15pm

Is it because I am using JInternalFrame?

hevee · October 23, 2008, 3:48pm

You might have to wrap username.requestFocusInWindow() into a Runnable and call that using SwingUtilities.invokeLater() to inject the call into the swing event dispatch thread.

ZaSz · October 23, 2008, 4:01pm

Thanks for reply.

I already tried this.

Something weird is that when I add a focus listener on the InternalFrame or on its ContentPane, it is never called.

I use frame.setSelected(true); to give focus to the frame.

I also tried catching tab keys in username and set the focus on password but it doesn't work either

frame = new JInternalFrame(); frame.setSize(200, 200); frame.setLocation(displayWidth / 2 - frame.getWidth() / 2, displayHeight / 2 - frame.getHeight() / 2); frame.setResizable(false); frame.setTitle(LanguageManager.getInstance().getMessage("login.title")); frame.setLayout(new GridLayout(6, 1)); frame.setFocusable(true); frame.setFocusTraversalKeysEnabled(true); JLabel userLabel = new JLabel(LanguageManager.getInstance().getMessage("login.label.username")); frame.getContentPane().add(userLabel); username = new JTextField(); username.setFocusTraversalKeysEnabled(true); username.setFocusable(true); username.addKeyListener(new KeyListener(){ @Override public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_TAB) { SwingUtilities.invokeLater(new Runnable(){ @Override public void run() { password.requestFocusInWindow(); password.requestFocus(); }}); password.requestFocusInWindow(); password.requestFocus(); } } @Override public void keyReleased(KeyEvent e) {} @Override public void keyTyped(KeyEvent e) {} }); frame.getContentPane().add(username); JLabel passwordLabel = new JLabel(LanguageManager.getInstance().getMessage("login.label.password")); frame.getContentPane().add(passwordLabel); password = new JPasswordField(); password.setFocusTraversalKeysEnabled(true); password.setFocusable(true); password.addKeyListener(new KeyListener(){ @Override public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_ENTER) { login(); e.consume(); } } @Override public void keyReleased(KeyEvent e) {} @Override public void keyTyped(KeyEvent e) {} }); frame.getContentPane().add(password); login = new JButton(LanguageManager.getInstance().getMessage("login.button.login")); login.addMouseListener(new MouseListener() { @Override public void mouseClicked(MouseEvent e) { login(); } @Override public void mouseEntered(MouseEvent e) {} @Override public void mouseExited(MouseEvent e) {} @Override public void mousePressed(MouseEvent e) {} @Override public void mouseReleased(MouseEvent e) {} }); frame.getContentPane().add(login); JButton quit = new JButton(LanguageManager.getInstance().getMessage("login.button.exit")); quit.addMouseListener(new MouseListener() { @Override public void mouseClicked(MouseEvent e) { GameEngine.getInstance().quit(); } @Override public void mouseEntered(MouseEvent e) {} @Override public void mouseExited(MouseEvent e) {} @Override public void mousePressed(MouseEvent e) {} @Override public void mouseReleased(MouseEvent e) {} }); frame.getContentPane().add(quit); frame.setBorder(null); frame.setVisible(true); desktop.getJDesktop().add(frame);

ZaSz · November 12, 2008, 8:54pm

Nobody ever successfully used Swing text fields in JME?

foobar · February 15, 2009, 8:26pm

Is this still an issue? I too cannot force focus into a different text box. I can't even capture tab key presses.

ZaSz · February 15, 2009, 9:37pm

Yep, but our project is over…

Ricket · March 17, 2009, 12:11am

I am also running into this problem. Has anyone else had experience with this and can offer a solution? I can't even figure out how to capture the tab event; as far as I can tell no keyTyped event is being generated. The multiple backspace issue is acceptable, but I must get the tab key to work and I really don't want to resort to a custom GUI just yet.

Thanks!

-Ricket

EDIT:

Okay, I found out that I can actually capture the tab event, and I am now (I was trying to do it in the KeyTyped event, which returns null for getKeyCode(), so I moved it to KeyReleased). Now I'm having the problem that requestFocus() is not working for my JTextFields. I had previously written a test case class which simply opens a JFrame, adds a JDesktopPane to it, and then adds my custom JInternalFrame class to it, and the frame works great with tab events and focusing and everything. However it doesn't work in the JMEDesktop implementation. requestFocus() appears to do nothing, despite it correctly being called (as a system.out.println shows).

Is this a bug then?