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https://issues.apache.org/jira/browse/MYFACES-4120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16043591#comment-16043591
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Leonardo Uribe commented on MYFACES-4120:
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I'm thinking on the side effect of not render resources inside <head> tag
content. Suppose an stylesheet. If the stylesheed is not inside <head> tag
after render all, the view will not be rendered properly. What I mean is
javascript resources are preserved BUT stylesheet resources aren't if they are
not bound to the DOM tree.
> ResourceHandler#markResourceRendered() should be retained during ajax rebuild
> -----------------------------------------------------------------------------
>
> Key: MYFACES-4120
> URL: https://issues.apache.org/jira/browse/MYFACES-4120
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.3.0
> Environment: TomEE 7.0.3 with MyFaces 2.3.0-SNAPSHOT
> Reporter: Bauke Scholtz
> Assignee: Leonardo Uribe
>
> While running OmniFaces IT suite on today's MyFaces 2.3.0-SNAPSHOT, I noticed
> a bug in ResourceHandler#isResourceRendered() during an ajax navigation back
> to the same view (more specifically, when FacesContext#setViewRoot() is
> invoked with a new UIViewRoot of same viewId during an ajax postback).
> During restore view phase, all already-rendered resources are correctly
> marked via markResourceRendered(). However, this is in turn stored as a
> transient UIViewRoot attribute. As a consequence, when the UIViewRoot gets
> changed during the very same ajax request, they are all lost, causing
> isResourceRendered() to incorrectly return false.
> Basically, the markResourceRendered() of the previous view should be
> remembered for the next view when PartialViewContext#isAjaxRequest() returns
> true and isRenderAll() returns false.
> In MyFaces 2.2 (and possibly earlier) the behavior of markResourceRendered()
> and isResourceRendered() was internally correctly implemented via
> org.apache.myfaces.RENDERED_SCRIPT_RESOURCES_SET context attribute.
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