private void doPopUp(MouseEvent e) {
if (e.isPopupTrigger()) {
this.button = (ColorIndexSupplier) e.getComponent();
int colorIndex = button.getColorCell();
for (int i = 0; i < groups.length; i++) {
JMenuItem m = (JMenuItem) getSubElements()[Palette.split(colorIndex, i) + 64 * i];
m.setSelected(true);
}
show(e.getComponent(), e.getX(), e.getY());
}
}
private void doSelect(ActionEvent e) {
button.setColorCell(
Palette.combine(
IntStream.range(0, groups.length).map(i -> findSelected(groups[i])).toArray()));
}