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https://issues.apache.org/jira/browse/WICKET-713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12700272#action_12700272
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Igor Vaynberg commented on WICKET-713:
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there is very little reason to reuse behaviors, they are cheap to create.
because this requires a modification to a widely used interface we cannot
implement this until version 1.5
> AbstractAjaxBehavior can not be reused.
> ---------------------------------------
>
> Key: WICKET-713
> URL: https://issues.apache.org/jira/browse/WICKET-713
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Reporter: Martin Funk
> Fix For: 1.5-M1
>
> Attachments: patch-713.diff
>
>
> AbstractAjaxBehavior is receiving a Component upon bind, this is keept even
> when the Behavior is removed from the Component
> so if the Behavior is added again it throws a
> IllegalStateException("this kind of handler
> cannot be attached to "
> + "multiple components; it is already
> attached to component " + this.component
> + ", but component " + hostComponent +
> " wants to be attached too");
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