Justin, For s:DataGrid that isn't how it works. Look at the doc for dataTipField and dataTipFunction. I think you would need to use a dataTipFunction and decide when to show the tip yourself.
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/spark/co mponents/DataGrid.html#dataTipField Carol On 3/21/12 1 :13AM, "Justin Mclean" <jus...@classsoftware.com> wrote: >Hi, > >The documentation for datatips state "DataTips are tooltips designed to >show the text that is too long for the row." > >However currently datatips show up all of the time in >mx:AdvancedDataGrid, mx:DataGrid, mx:List and s:DataGrid. > >The code is implemented correctly in the ListItemRender (and >DataGridItemRenderer and AdvancedDataGridItemRenderer etc classes) the >issue is that the dataTipField has a default of "label" which means tool >tips show for all items. > > Here's the relevant code from the ADG item renderer: > > if (!(_data is AdvancedDataGridColumn) && (textWidth > >width > || column.dataTipFunction || column.dataTipField > || dg.dataTipFunction || dg.dataTipField)) > { > toolTip = column.itemToDataTip(_data); > } > else > { > toolTip = null; > } > >As dg.dataTipField is going to be non null if ignores the textWidth > >width check. It's similar with the datagrid and the list renderers. > >A work around for the mx classes is to do bind or set dataTipField to >null, this is a bit ugly and I think it would be better to change the >default value of dataTipField to null (or perhaps add a check of && >dataTipField != labelField). I've not been able to work out a work around >for the s:DataGrid yet. > >Anyone have any more info (or an opinion) on this? There's no existing >JIRA issue in the Adobe bug base that I can find. > >Note that s:List doesn't have an issue as it doesn't support dataTips at >all :-( > >Thanks, >Justin
