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https://issues.apache.org/jira/browse/WICKET-1856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12762157#action_12762157
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Stanislav Dvorscak commented on WICKET-1856:
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The same problem is with the DataTable. It will be perfect, if you have always
in the tbody <tr style="display: none"><td></td></tr> or something like this.
It is necessary only because of W3C validation. I know it is crazy, but the
second possibility is only to change the DTD declaration of XHTML, and I don't
know if it is more easy :)
> AbstractTree XHTML Strict validation
> ------------------------------------
>
> Key: WICKET-1856
> URL: https://issues.apache.org/jira/browse/WICKET-1856
> Project: Wicket
> Issue Type: Improvement
> Components: wicket
> Affects Versions: 1.4-M2
> Reporter: Kaspar Fischer
> Assignee: Matej Knopp
> Priority: Trivial
>
> [Notice: Adapted from http://markmail.org/message/afuxccwazkzwc7bz ]
> I have a rootless BaseTree and see it output
> <table style="display:none" id="tree1f_0"></table><table
> class="wicket-tree-content" id="tree1f_1"><tr>...
> which according to http://validator.w3.org is invalid strict XHTML. Looking
> at the
> comment in the code, AbstractTree.onRender(),
> // is this root and tree is in rootless mode?
> if (this == rootItem && isRootLess() == true)
> {
> // yes, write empty div with id
> // this is necessary for createElement js to
> work correctly
> String tagName =
> ((ComponentTag)markupStream.get()).getName();
> getResponse().write(
> "<" + tagName + "
> style=\"display:none\" id=\"" + getMarkupId() + "\"></" +
> tagName + ">");
> markupStream.skipComponent();
> }
> it appears from the comment that the indention was to output a div and not a
> table. With
> a div, we would get valid markup:
> <div style="display:none" id="tree1f_0"></div><table
> class="wicket-tree-content" id="tree1f_1"><tr>...
> Is there a particular reason to fetch the tagName from the markupStream
> instead of just hardcoding
> it to "div"?
> Thanks,
> Kaspar
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