>
> Why don't you use instanceof?
>
Good point, sorry I forgot some info: I want to use a general method that
searches for the widget types.
Details:
I have my own Widget tree (its root is called Elemento ;), It's a kind of
builder pattern, that constructs GWT Element instances (I hope I can still
use it in gwt 3.0 ;).
Anyway it's contains the visitor pattern, to visit all contained Elemento
instances. So a Elemento panel will visit all contained Elemento instances.
The visitor will then use the following general static Util method (work
in progress) to discover if it concerns the correct type:
public static boolean isInstanceOf(final Class<?> type, final Object obj) {
if (isNotNull(type, obj)) {
if (type.equals(obj.getClass())) {
return true;
}
else {
Class<? extends Object> cls = obj.getClass
();
while (isNotNull(cls) && !Object.class.
equals(cls)) {
if (type.equals(cls)) {
return true;
}
cls = cls.getSuperclass();
}
}
}
return false;
}
The alternative would be to use a Visitor for every know type and use the
instanceof operator (instanceof requires the Object name).
I understand I can't use reflection ;), but was still hoping to still use
some general approach.
--
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/google-web-toolkit.
For more options, visit https://groups.google.com/d/optout.
