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https://issues.apache.org/jira/browse/WICKET-4408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13502915#comment-13502915
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Sven Meier commented on WICKET-4408:
------------------------------------
Auto components are removed when the component tree is detached.
The ticket is marked fixed because since 1.5 the component can walk the markup
upfront before rendering and add required components. Note that these are not
auto components.
> Components resolved by an IComponentResolver fail to contribute to header via
> renderHead
> ----------------------------------------------------------------------------------------
>
> Key: WICKET-4408
> URL: https://issues.apache.org/jira/browse/WICKET-4408
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.5.4
> Environment: Happens on all FireFox Chrome, IE
> Windows XP
> Reporter: Chris Colman
> Assignee: Igor Vaynberg
> Labels: wicket
>
> If a component is resolved via an IComponentResolver implementation then its
> overridden renderHead method never gets called.
> If the same component is added explicitly to its parent then its renderHead
> method is called.
> This is critical for us because we have markup variations that may or may not
> include certain panels. We thus leave the construction/adding of these panels
> to our IComponentResolver implementation because we can't explicitly add them
> because not all markup will require all panels.
> Class MyPanel extends Panel
> {
> /**
> * Write out necessary header markup.
> */
> @Override
> public void renderHead(IHeaderResponse response)
> {
> StringBuffer sb = new StringBuffer();
>
> sb.append("<script src=\"/jquery.easing.1.3.min.js\"></script>");
> sb.append("<script src=\"/trans-banner.min.js\"></script>");
>
> response.renderString(sb.toString());
> }
> }
> We aren't using any markup inheritance at the panel level.
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