[richfaces-issues] [JBoss JIRA] (RF-12289) rich:dataTable and rich:dataScroller inside h:panelGroup - doesn't display the correct number of rows when number of rows is updated

[Jonáš Trantina (JIRA)]

     [ https://issues.jboss.org/browse/RF-12289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonáš Trantina updated RF-12289:
--------------------------------

    Affects Version/s: 4.3.5

    
> rich:dataTable and rich:dataScroller inside h:panelGroup - doesn't display the correct number of rows when number of rows is updated
> ------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: RF-12289
>                 URL: https://issues.jboss.org/browse/RF-12289
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: component-tables
>    Affects Versions: 4.2.1.Final, 4.2.2.Final, 4.3.5
>            Reporter: Nicolas Daniels
>             Fix For: 5-Tracking
>
>         Attachments: another-reproducer.zip, richfaces-sandbox.zip, rich_dataTable-rows.png, test.jspx, TestFace.java
>
>
> Trying to have datascroller with dynamic rows number, but it works only if dataScroller is above the table.
> Basically, what I have is:
>  <h:selectOneMenu value="#{myBean.batchRows}">
>      <f:selectItem itemLabel="10" itemValue="10"/>
>      <f:selectItem itemLabel="20" itemValue="20"/>
>      <f:ajax render="table table-ds" />
> </h:selectOneMenu>
> ...
> <h:panelGroup>
>  <rich:dataTable id="table" rows="#{myBean.batchRows}" value="#{myBean.dataModel}" var="var">
> ...
> </rich:dataTable>
> </h:panelGroup>
> <rich:dataScroller id="table-ds" page="#{myBean.batchPage}" for="table" renderIfSinglePage="false" boundaryControls="hide" fastControls="hide">
> ...
> </rich:dataScroller>
>  
> And the behaviour with 21 elements:
> - on page 2 displaying 20 element (so only 1 is visible), if I switch to 10, I stay on page 2 but I still have only 1 element visible.
>  
> If my datascroller is above my table it works fine. If the table is not wrapped within a panelGroup, it works as well.
>  
> Debugging a bit, it seems that when UIDataAdaptor.walk method is 1st called, getComponentState() is updating the state rows and first properties with values:
> - rows: 10 (correct)
> - first: 20 (weird)
>  
> Following calls to this method is setting those properties to:
> - rows: 10 (correct)
> - first: 10 (correct)
>  

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