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https://issues.apache.org/jira/browse/WICKET-4232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Igor Vaynberg updated WICKET-4232:
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Priority: Minor (was: Major)
Assignee: Igor Vaynberg
how is the empty response generated? do you call target.appendjavascript("")?
> Imroper handling of empty ajax response with empty CDATA text node.
> -------------------------------------------------------------------
>
> Key: WICKET-4232
> URL: https://issues.apache.org/jira/browse/WICKET-4232
> Project: Wicket
> Issue Type: Bug
> Components: wicket, wicket-extensions
> Affects Versions: 1.4.18
> Environment: Mac OS 10.4.11 & Safari 4.1.3 and Mac OS 10.5 & Safari 5.
> Reporter: Alexander Yatsenko
> Assignee: Igor Vaynberg
> Priority: Minor
>
> After moving one of items on Palette component at once subsequent ajax
> requests are impossible due to default's channel busy behavior ("Channel busy
> - postponing...").
> Code tracing has shown that the problem source is possible improper
> implementation of DOMParser in mentioned browsers which lead to wrong parsing
> of empty response xml:
> <?xml version="1.0"
> encoding="UTF-8"?><ajax-response><evaluate><![CDATA[]]></evaluate></ajax-response>,
>
> particularly empty text node <!'CDATA[]]> hasn't been parsed.
> As a result, the processEvaluation function of WicketAjaxCall's object cause
> exception in the line of code:
> var text = node.firstChild.nodeValue;
> (because of absence of child node in evaluate's element).
> As a result, all necessary steps could not be processed and default channel
> isn't closed by Request object.
> The workaround found to solve this issue is to add the
> AjaxFormComponentUpdatingBehavior("onchange") to the Recorder element in
> panel's recorder factory method and override the onUpdate event with
> appending some none empty string to target object.
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