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https://issues.apache.org/jira/browse/WW-4145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13723829#comment-13723829
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Jasper Rosenberg commented on WW-4145:
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My Freemarker template implementation is definitely not going to be great,
particularly because it is uncached.
A better option might be to have a custom TemplateLoader at the top of the
Configuration loader stack that was theme aware. That way it would naturally
leverage the Freemarker caching layer. This is actually how we do template
swapping in Freemarker for the A/B testing framework I built years ago.
So we could have the include look like:
<#include "/${parameters.templateDir}/_theme_/controlfooter.ftl" /><#nt/>
Then our template loader could iterate through the theme hierarchy, replacing
"_theme_" with each name in turn, and call the rest of the stack on each
version until it got a hit which it would return.
I will try to write an implementation later today. I have just gotten back from
vacation, so I have to do some housekeeping first.
> file.ftl in xhtml theme directly references xhtml controlfooter.ftl
> -------------------------------------------------------------------
>
> Key: WW-4145
> URL: https://issues.apache.org/jira/browse/WW-4145
> Project: Struts 2
> Issue Type: Bug
> Components: Other
> Affects Versions: 2.3.15.1
> Reporter: Jasper Rosenberg
> Assignee: Lukasz Lenart
> Labels: freemarker, tags, xhtml
> Fix For: 2.3.16
>
>
> Should use $\{parameters.theme} instead so can be used in theme extension.
> {code}
> <#include "/${parameters.templateDir}/${parameters.theme}/controlheader.ftl"
> />
> <#include "/${parameters.templateDir}/simple/file.ftl" />
> <#include "/${parameters.templateDir}/${parameters.theme}/controlfooter.ftl"
> />
> {code}
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