static {
CLASS_WHITELIST = new TreeSet<String>();
CLASS_WHITELIST.add("center");
CLASS_WHITELIST.add("top");
CLASS_WHITELIST.add("right");
CLASS_WHITELIST.add("bottom");
CLASS_WHITELIST.add("left");
}
private static String[] filterClasses(String[] classes) {
Set<String> filteredClasses = new TreeSet<String>();
for (int i = 0; i < classes.length; i++) {
if (CLASS_WHITELIST.contains(classes[i])) {
filteredClasses.add(classes[i]);
}
}
return filteredClasses.toArray(new String[filteredClasses.size()]);
}