package org.lobobrowser.html.renderer;
import java.util.Comparator;
class ZIndexComparator implements Comparator<PositionedRenderable> {
// Note: It is assumed that objects don't change their
// z-indexes or ordinals after entering the sorted set.
// They may do so after the sorted set is no longer valid.
public int compare(final PositionedRenderable element1, final PositionedRenderable element2) {
final int zIndex1 = element1.renderable.getZIndex();
final int zIndex2 = element2.renderable.getZIndex();
final int diff = zIndex1 - zIndex2;
if (diff != 0) {
return diff;
}
return element1.ordinal - element2.ordinal;
}
}