[WICKET-838] AjaxFormChoiceComponentUpdatingBehavior not working

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0-beta2
• Fix Version/s: 1.3.0-beta3
• Component/s: wicket
• Assignee: Unassigned
• Reporter: Carlos Pita
• Created: 12/Aug/07 00:50
• Updated: 15/Aug/07 21:13
• Resolved: 15/Aug/07 21:02

Description

I think this is because of its own component field that is hiding that of AbstractAjaxBehavior. Try to run the attached example and you will get:

WicketMessage: Exception in rendering component: [MarkupContainer [Component id = _header_, page = com.livra.web.user.RegistrationPage, path = 12:_header_.HtmlHeaderContainer, isVisible = true, isVersioned = true]]

Root cause:

java.lang.NullPointerException
at org.apache.wicket.ajax.form.AjaxFormChoiceComponentUpdatingBehavior.renderHead(AjaxFormChoiceComponentUpdatingBehavior.java:71)
at org.apache.wicket.Component.renderHead(Component.java:2266)
at org.apache.wicket.markup.html.internal.HtmlHeaderContainer$1.component(HtmlHeaderContainer.java:209)
at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:843)
at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:858)
at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:883)