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https://issues.apache.org/jira/browse/WICKET-192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12495289
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Matej Knopp commented on WICKET-192:
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I think the current way is not difficult :) This is okay for open / close
leaves icons, but what if you have different icon for each node type? (e.g.
file browser). Then it's much better IMHO to do it in java.
> make it easier to customize node icons in the tree
> --------------------------------------------------
>
> Key: WICKET-192
> URL: https://issues.apache.org/jira/browse/WICKET-192
> Project: Wicket
> Issue Type: Improvement
> Components: wicket
> Affects Versions: 1.2.4, 1.3, 2.0
> Reporter: Igor Vaynberg
> Assigned To: Matej Knopp
> Fix For: 1.3
>
>
> looking at how the tree works now, we are inlining the url to the node icon
> into the markup in newNodeIcon(). so if the user wants to customize the icon
> images they have to do it through code which is a pita imho. it would be
> better if instead of inlining resource urls we would set a css class
> attribute, then users can provide their own stylesheet.
> then we need to figure out a way to make it easy to silence the tree's own
> css contribution so the user can override it with their own.
> make sense?
> its a lot easier for me to do <style>div.my-nav-tree div.wicket-tree
> span.node-expanded { background-url: {foo.png}}</style> then have to register
> my own wicket resource, override getNodeIcon(), etc
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