GUIRegistrationPanel.java 文件源码

private void setEditable(final JComboBox combo) {
    combo.setEditable(true);
    if (combo.getEditor().getEditorComponent() instanceof JTextField) {
        JTextField txt = (JTextField) combo.getEditor().getEditorComponent();
        // XXX check if there are not multiple (--> redundant) listeners
        txt.getDocument().addDocumentListener(new UIUtil.DocumentAdapter() {
            public void insertUpdate(DocumentEvent e) {
                if (!UIUtil.isWaitModel(combo.getModel())) {
                    checkValidity();
                }
            }
        });
    }
}