/** Resets all derived attributes, based on a set of looks. */
public void setLooks(Set<Look> looks) {
testFixed(false);
VisualMap newValues = Look.getVisualsFor(looks);
Set<VisualKey> staleKeys = EnumSet.noneOf(VisualKey.class);
for (VisualKey key : VisualKey.deriveds()) {
if (key.getNature() == Nature.DERIVED) {
Object newValue = newValues.map.get(key);
boolean refresh;
if (newValue == null) {
Object oldValue = this.map.remove(key);
refresh = oldValue != null;
} else {
Object oldValue = this.map.put(key, newValue);
refresh = !newValue.equals(oldValue);
}
// tell the attribute to refresh
// if something actually changed
if (refresh) {
staleKeys.add(key);
}
}
}
this.attrMap.setStale(staleKeys);
}
