[jira] Updated: (WICKET-1980) Fixing JS error on autocomplete with preselect

["Ivo Danihelka (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-1980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ivo Danihelka updated WICKET-1980:
----------------------------------

    Attachment: lazy_preselect.diff

Patch against wicket SVN trunk.

> Fixing JS error on autocomplete with preselect
> ----------------------------------------------
>
>                 Key: WICKET-1980
>                 URL: https://issues.apache.org/jira/browse/WICKET-1980
>             Project: Wicket
>          Issue Type: Bug
>          Components: wicket-extensions
>         Environment: Firefox 3, Linux.
> Wicket 1.3.4.
>            Reporter: Ivo Danihelka
>            Priority: Minor
>         Attachments: lazy_preselect.diff
>
>
> There is a Javascript error when using the autocomplete text field with preselect. 
> The error:
> "element.firstChild is null"
> The affected line is inside getSelectedValue():
>  var attr=element.firstChild.childNodes[selected].attributes['textvalue'];
> How to reproduce:
> 1) Type something into the autocomplete text field. The javascript will send an Ajax request.
> 2) Hit enter quickly. When you hit it before the Ajax response arrives, the error occurs.
> It is because the preselect sets selected=0, before sending the Ajax request.
> It should be kept to -1 until the response arrives.
> I'm going to attach a short patch for this.

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