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https://issues.apache.org/jira/browse/WICKET-2292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Igor Vaynberg resolved WICKET-2292.
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Resolution: Fixed
Assignee: Igor Vaynberg
> TabbedPanel uses too much generics (revert WICKET-2153)
> -------------------------------------------------------
>
> Key: WICKET-2292
> URL: https://issues.apache.org/jira/browse/WICKET-2292
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.4-RC3
> Reporter: Erik van Oosten
> Assignee: Igor Vaynberg
> Fix For: 1.4-RC5
>
>
> Please revert WICKET-2153.
> By declaring the list of tabs as List<? extends ITab> you are saying that the
> list contains elements with some super type that is a subtype of ITab. Having
> this type there is no way of knowing which exact supertype that is, just that
> it is a subclass of ITab. The result is that you can only add null to the
> list. Of course this is non-sense; TabbedPanel uses ITab and not some unknown
> subclass thereof.
> To demonstrate: right now you can not do:
> ITab tab = ...;
> tabbedPanel.getTabs().add(tab);
> To properly solve WICKET-2153, the user should cast his/her list to
> List<ITab> or just create a list of that type in the first place.
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