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https://issues.apache.org/jira/browse/MYFACES-4679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17876351#comment-17876351
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Volodymyr Siedlecki commented on MYFACES-4679:
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I think when you click the button - both the XHR (ajax) and the post occur –
which explain the 1 listener and 2 confirm calls.
1) confirm - POST
2) listener - XHR
3) confirm -XHR (due to the isSubmitted caused by 4606)
> MYFACES-4606 Causes Multiple Events To Queue
> --------------------------------------------
>
> Key: MYFACES-4679
> URL: https://issues.apache.org/jira/browse/MYFACES-4679
> Project: MyFaces Core
> Issue Type: Bug
> Reporter: Volodymyr Siedlecki
> Priority: Major
> Attachments: MYFACES-4679.zip
>
>
> Easier to demonstrate via the attached app.
> 1) Deploy application with MYFACES-4606 applied.
> 2) Visit index.xhtml
> 3) Click down on the first button (don't let go)
> 4 Move the cursor elsewhere and then let the click go.
> 5) Click anywhere on the page to trigger the blur event (unfocus the button).
> 6) Repeat with the second button
> With the second button, both the listener and confirm actions to occur. Even
> though, the button wasn't actually clicked.
> In my view, only the listener event should occur, not the confirm actions.
> However, by adding the issuing element to the request, JSF thinks the button
> was clicked after all.
> The activate action check is here:
> [https://github.com/apache/myfaces/blob/2.3.x/shared/src/main/java/org/apache/myfaces/shared/renderkit/html/HtmlButtonRendererBase.java#L65]
> The "isSubmitted" method return true for paramMap.containsKey(clientId) which
> is what the 4606 fix did (add the client id).
> *This there a way to keep the older behavior for this scenario (pre-4606)?*
> Additionally, I've seen the multiple invocations for the listener / confirm,
> but I can't pin point the problem (could be some other button click
> combination).
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