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https://issues.apache.org/jira/browse/WICKET-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Juergen Donnerstag resolved WICKET-2049.
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Resolution: Won't Fix
Assignee: Juergen Donnerstag
beforeRender is invoked before the render process. But only during the render
process the component associated to the markup tag is dynamically identified
and thus only than the behavior you attached to the ComponentTag can be
handled. I don't see any way to fix it. But there is another solution: please
see WicketRemoveTagHandler
> beforeRender not called for behaviour added to ComponentTag
> -----------------------------------------------------------
>
> Key: WICKET-2049
> URL: https://issues.apache.org/jira/browse/WICKET-2049
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.3.5
> Reporter: David
> Assignee: Juergen Donnerstag
> Attachments: ComponentTagAddBehaviourBug.zip
>
>
> When adding a IMarkupFilter and adding a behaviour to the ComponentTag, the
> beforeRender method is never called, only onComponentTag will be called, but
> by then it is too late to modify the component.
> Usecase: I would like to make components hidden if the markup contains
> wicket:hidden="hidden". For this i need to modify the components visiblitiy
> depending on if the markup contains that attribute.
> The attached quickstart will never reach the
> System.out.println("beforeRender: should hide component"); in
> HiddenComponentMarkupFilter
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