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https://issues.apache.org/jira/browse/FLEX-32541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14047734#comment-14047734
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Alex Harui commented on FLEX-32541:
-----------------------------------
I don't know the code that well, but isn't sortItemRendererInstance usually
null? If so, the patch would defeat most of the code that follows in most
scenarios.
> sortable ou sortableColumns = false still shows box of sorting and
> sortItemRenderer = null throws error
> -------------------------------------------------------------------------------------------------------
>
> Key: FLEX-32541
> URL: https://issues.apache.org/jira/browse/FLEX-32541
> Project: Apache Flex
> Issue Type: Bug
> Components: Advanced Data Grid
> Affects Versions: Adobe Flex SDK Previous, Apache Flex 4.12.1
> Environment: Affected OS(s): Windows
> Affected OS(s): Windows XP
> Language Found: English
> Reporter: Adobe JIRA
> Assignee: Alex Harui
> Priority: Minor
> Fix For: Apache Flex 4.12.2
>
> Attachments: FLEX-32541.patch, _sortItemRendererNullRTE.fxp
>
>
> Steps to reproduce:
> 1. Run Teste.mxml. First and second columns of first AdvancedDataGrid are
> sortable = false, but same thus shows the box of sorting.
> 2. Click at button, the first collomn shows the arrow of sorting, this is
> sortable = false.
> 3. At second AdvancedDataGrid sortItemRenderer="{null}", but throws error
> below when mouse over the headers.
> TypeError: Error #1009: Não é possível acessar uma propriedade ou um método
> de uma referência de objeto nula.
> at
> mx.controls.advancedDataGridClasses::AdvancedDataGridHeaderRenderer/mouseEventToHeaderPart()[C:\work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\advancedDataGridClasses\AdvancedDataGridHeaderRenderer.as:738]
> at
> mx.controls::AdvancedDataGrid/mouseOverHandler()[C:\work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\AdvancedDataGrid.as:6493]
> at
> mx.controls.listClasses::AdvancedListBase/mouseMoveHandler()[C:\work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\listClasses\AdvancedListBase.as:8119]
>
> SDK 3.3
> DMV 3.3
> Workaround:
> Class ADGHeaderRenderer
>
> Expected Results:
> Box of sorting don't shows when sortable ou sortableColumns = false or
> sortItemRenderer = null.
> Please, sorry my poor English.
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