[jira] [Commented] (WICKET-4428) Wicket DebugBar: add CSS property "z-index" so it will show above other elements that use z-index

["Christoph Grothaus (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WICKET-4428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218059#comment-13218059 ] 

Christoph Grothaus commented on WICKET-4428:
--------------------------------------------

@Martin: you are right regarding that the proposed value for z-index may be too low in specific cases. But taking that as an argument for not adding some z-index value to wicket-debugbar.css at all -- I don't know...

Many web designers out there and many web frameworks use z-index values in the hundreds or lower thousands. I stumbled over this issue when using the Wicket debug bar in my HTML page together with the popular Twitter Bootstrap CSS framework (which uses a z-index of 1030 for the top navigation). I wondered where that funny debug bar might be...

Of course you can get around it by supplying your own CSS -- which is what I did --, but I think we can help other wicket developers by choosing a reasonable default z-index value, so they don't have to wonder about this.

The only question IMHO is what that reasonable default value should be. My first proposal of 4096 was a fully random choice. But maybe we can agree on 100000? That should solve 98% of all cases where the debug bar does not show up initially.
                
> Wicket DebugBar: add CSS property "z-index" so it will show above other elements that use z-index
> -------------------------------------------------------------------------------------------------
>
>                 Key: WICKET-4428
>                 URL: https://issues.apache.org/jira/browse/WICKET-4428
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket-devutils
>    Affects Versions: 1.5.4
>            Reporter: Christoph Grothaus
>            Priority: Trivial
>         Attachments: fix-WICKET-4428.patch
>
>   Original Estimate: 0.5h
>  Remaining Estimate: 0.5h
>
> The wicket debugbar may fail to display if the webpage has a <div> element or any other component at the top that uses the CSS property "z-index". As the debug bar <div> element has no z-index, it will be under that other element, hence not visible.
> Solution: add a line "	z-index: 4096;" to wicket-debugbar.css.

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