contentPane.add(createCustomizationPanel(), BorderLayout.CENTER);
// Buttons panel.
buttonsPanel = new XBoxPanel();
buttonsPanel.add(applyButton = new JButton(Translator.get("apply")));
buttonsPanel.addSpace(20);
buttonsPanel.add(okButton = new JButton(Translator.get("ok")));
buttonsPanel.add(cancelButton = new JButton(Translator.get("cancel")));
// Disable "commit buttons".
applyButton.setEnabled(false);