> Originally, the DualList class inherited from Composite rather that
> FocusWidget - however, in order to use the DualList together with
> DataEntry, I had to extend it from FocusWidget.
> And I think, that the problem is related to this somehow...
>
Jip. You have forgotten to set a root element in your DualList. Each Widget
in GWT must have such a root element.
You need to call
public DualList() {
super(Document.get().createDivElement()); // or any other HTML element
that fits your needs.
// ...
}
-- J.
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