protected void assignUniqueId(FaceletContext ctx, UIComponent parent, String id, UIComponent c) {
// If the id is specified as a literal, and the component is being
// repeated (by c:forEach, for example), use generated unique ids
// after the first instance
if (this.id != null && !(this.id.isLiteral() && ComponentSupport.getNeedUniqueIds(ctx))) {
c.setId(this.id.getValue(ctx));
} else {
UIViewRoot root = ComponentSupport.getViewRoot(ctx, parent);
if (root != null) {
String uid;
IdMapper mapper = IdMapper.getMapper(ctx.getFacesContext());
String mid = ((mapper != null) ? mapper.getAliasedId(id) : id);
UIComponent ancestorNamingContainer = parent.getNamingContainer();
if (null != ancestorNamingContainer && ancestorNamingContainer instanceof UniqueIdVendor) {
uid =
((UniqueIdVendor) ancestorNamingContainer).createUniqueId(ctx.getFacesContext(), mid);
} else {
uid = root.createUniqueId(ctx.getFacesContext(), mid);
}
c.setId(uid);
}
}
if (this.rendererType != null) {
c.setRendererType(this.rendererType);
}
}
