public void focusGained(FocusEvent e) {
Component c = e.getComponent();
if (c instanceof TextField) ((TextField) c).selectAll();
}
public void focusLost(FocusEvent e) {
Component c = e.getComponent();
if (c instanceof TextField) ((TextField) c).select(0, 0);
}
public void focusGained(FocusEvent e) {
fieldWithFocus = e.getSource();
if (fieldWithFocus == widthField) constainAspectRatio = true;
else if (fieldWithFocus == yField) constainAspectRatio = false;
}