@Override
public Object getPreviousValue() {
final Object ret = this.getValue();
final long num = ((Number) ret).longValue();
final Unit unit = SizeFormatter.getBestUnit(num);
long add = getStep(num, unit);
long nv;
if (this.nm.getMinimum() != null) {
nv = (long) Math.max(((Number) this.nm.getMinimum()).longValue(), num - add);
} else {
nv = (long) (num - add);
}
final Unit nunit = SizeFormatter.getBestUnit(nv);
if (nunit == unit) {
if (nv == num) {
this.beep();
}
return nv;
}
nv = nunit.getBytes1024() * 1000;
if (nv == num) {
this.beep();
}
return nv;
}
@Override
public Object getNextValue() {
Object ret = getValue();
long num = ((Number) ret).longValue();
Unit unit = SizeFormatter.getBestUnit(num);
long add = getStep(num, unit);
long newV;
if (nm.getMaximum() != null) {
newV = (long) Math.min(((Number) nm.getMaximum()).longValue(), num + add);
} else {
newV = (long) (num + add);
}
Unit newUnit = SizeFormatter.getBestUnit((long) newV);
if (newUnit == unit) {
if (newV == num) {
beep();
}
return newV;
}
newV = newUnit.getBytes1024() * 1;
if (newV == num) {
beep();
}
return newV;
}
public long getStep(long num, Unit unit) {
long display = num / unit.getBytes1024();
int log = display < 1 ? 0 : (int) Math.log10(display);
log -= 1;
long add = 0;
if (log < 0) {
add = (long) ((unit.getBytes1024() / 1024) * 100);
} else {
add = (long) (Math.pow(10, log) * unit.getBytes1024());
}
return Math.max(1, add);
}