private void updateButtons() {
int index = list.getSelectedIndex();
remove.setEnabled(index != -1 && listModel.getSize() != 0);
moveUp.setEnabled(index > 0);
moveDown.setEnabled(index != -1 && index != listModel.getSize() - 1);
edit.setEnabled(index != -1);
}
private void updatePreview() {
String family = familyField.getText();
int size;
try {
size = Integer.parseInt(sizeField.getText());
} catch (Exception e) {
size = 12;
}
int style = styleList.getSelectedIndex();
preview.setFont(new Font(family, style, size));
}