[richfaces-issues] [JBoss JIRA] (RF-13141) rich:select item Selction not working with huge lists

[J W (JIRA)]

    [ https://issues.jboss.org/browse/RF-13141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12813926#comment-12813926 ] 

J W commented on RF-13141:
--------------------------

New Knowledge on this issue: it is cause by the calculation of the offset in the __scrollToSelectedItem function. However this does not affect Google Chrome!
                
> rich:select item Selction not working with huge lists
> -----------------------------------------------------
>
>                 Key: RF-13141
>                 URL: https://issues.jboss.org/browse/RF-13141
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: component, component-selects
>    Affects Versions: 4.3.2
>            Reporter: J W
>              Labels: select
>             Fix For: 5-Tracking
>
>
> 1) Expand the select box with a huge list
> 2) Press and Hold Down Arrow-Key
> 3) after a couple of seconds you can see how the marked item (the last one in the current scroll) is moving out of the visible scroll list.
> 4) at this point the marked item is not visible anymore and you can not mark items anymore by hovering/using ArrowKeys. The Scroll List keeps moving whenever you move your mouse, making it actually impossible to select any item
> Also:
> If you scroll down in a list (20 items) move your mouse to the first partially visible item in the scroll. the scroll box will scroll up and do the same thing again since the mouse is still at the same place indicating the user wants to mark the next partially visible item. the result is,that the scroll scrolls allways 2-3 items heavily irritating the user.
> I guess the __scrollToSelectedItem function in list.js is the reason for this bad behavior.

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