public void apply(FaceletContext ctx, UIComponent parent) throws IOException {
// only process if it's been created
if (parent == null || !ComponentHandler.isNew(parent)) {
return;
}
if (isEventSource(parent)) {
applyAttachedObject(ctx.getFacesContext(), parent);
} else if (UIComponent.isCompositeComponent(parent)) {
// Allow the composite component to know about the target component.
TagHandlerUtils.getOrCreateRetargetableHandlersList(parent).add(this);
} else {
throw new TagException(
this.tag, "Parent does not match event source requirements: " + parent);
}
}
