@Override
public void redo() {
super.redo();
// Redo the change.
try {
if (newValue == null) {
entry.clearField(field);
} else {
entry.setField(field, newValue);
}
} catch (IllegalArgumentException ex) {
LOGGER.info("Cannot perform redo", ex);
}
}
@Override
public void undo() {
super.undo();
// Revert the change.
try {
if (oldValue == null) {
entry.clearField(field);
} else {
entry.setField(field, oldValue);
}
// this is the only exception explicitly thrown here
} catch (IllegalArgumentException ex) {
LOGGER.info("Cannot perform undo", ex);
}
}