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From "Mihai Chira (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLEX-35028) Error in DataGrid getHeaderRendererAt(-1)
Date Fri, 21 Oct 2016 09:50:58 GMT

    [ https://issues.apache.org/jira/browse/FLEX-35028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15594664#comment-15594664
] 

Mihai Chira commented on FLEX-35028:
------------------------------------

[~jmclean] and [~flexcapacitor] did you have a test project to reproduce this? We've had it
reported by one of our users, and now I'm trying to figure out how it could be reproduced
in our application.

> Error in DataGrid getHeaderRendererAt(-1)
> -----------------------------------------
>
>                 Key: FLEX-35028
>                 URL: https://issues.apache.org/jira/browse/FLEX-35028
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Spark: DataGrid
>            Reporter: Judah Frangipane
>            Assignee: Justin Mclean
>             Fix For: Apache Flex 4.16.0
>
>
> When using a DataGrid if you click the header and the column index is -1 then an error
is thrown: 
> {code:actionscript}
>     // line 917 in GridColumnHeaderGroup.as: 
>     public function getHeaderRendererAt(columnIndex:int):IGridItemRenderer
>     {
>         // TODO: fix this: do the work here, rather than the layout            
> 		const view:Group = getColumnHeaderViewAtIndex(columnIndex);	
>         return GridHeaderViewLayout(view.layout).getHeaderRendererAt(columnIndex);
>     }
> {code}
> Apparently the columnIndex is -1 when clicking on the header. 
> Solution may be to check if index is not -1 and return null if it is
> Alternative solution would be check for -1 in gchg_mouseDownDragUpHandler at line 1112
and not dispatch an event. 



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