[jira] [Resolved] (WICKET-6863) Method Component.setVisibilityAllowed should call onVisibleStateChanged()

["Sven Meier (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-6863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sven Meier resolved WICKET-6863.
--------------------------------
    Fix Version/s: 8.12.0
                   9.3.0
       Resolution: Fixed

Thank you very much for the detailed bug report!

> Method Component.setVisibilityAllowed should call onVisibleStateChanged()
> -------------------------------------------------------------------------
>
>                 Key: WICKET-6863
>                 URL: https://issues.apache.org/jira/browse/WICKET-6863
>             Project: Wicket
>          Issue Type: Bug
>    Affects Versions: 9.2.0, 8.11.0
>            Reporter: Ondrej Fafejta
>            Assignee: Sven Meier
>            Priority: Major
>             Fix For: 9.3.0, 8.12.0
>
>
> Problem is in cache of Component visibility introduced in WICKET-6839. 
> RFLAG_VISIBLE_IN_HIERARCHY_SET
> If we use {{setVisibilityAllowed}} instead of {{setVisible}} exception is thrown.
> {code:java}
> org.apache.wicket.WicketRuntimeException: The component(s) below failed to render. Possible reasons could be that:
>         1) you have added a component in code but forgot to reference it in the markup (thus the component will never be rendered),
>         2) if your components were added in a parent container then make sure the markup for the child container includes them in <wicket:extend>.
>  {code}
> One posible solution is to call cleaning visibility cache in method {{Component.setVisibilityAllowed}}.
> e.g.
> Method {{Component.setVisibilityAllowed}} should call {{onVisibleStateChanged()}} as method {{Component.setVisible}} does.
> All is demonstrated in github project
> [https://github.com/fafejtao/wicket9.2_visibility_bug]
>  
> [https://github.com/fafejtao/wicket9.2_visibility_bug/blob/master/src/main/java/com/mycompany/MyPanel.java#L22]



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