private static void applyCssVisibility(final Component component, final boolean visible) {
final AttributeModifier modifier =
visible
? new AttributeModifier(
"class",
String.valueOf(component.getMarkupAttributes().get("class"))
.replaceFirst(INVISIBLE_CLASS, ""))
: new AttributeAppender("class", " " + INVISIBLE_CLASS);
component.add(modifier);
}
public String getAttributeValue(final Component c) {
String value = null;
try {
final ValueMap atts = c.getMarkupAttributes();
value = toStringOrNull(atts.get(getAttribute()));
} catch (MarkupNotFoundException e) {
LOGGER.debug(e, e);
}
final String newValue = newValue(value, toStringOrNull(getReplaceModel().getObject()));
return newValue;
}