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https://issues.apache.org/jira/browse/FLEX-35028?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Mclean resolved FLEX-35028.
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Resolution: Fixed
Fix Version/s: Apache Flex 4.16.0
Other place in the code check that the index is not -1 so went with the second
option.
> 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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