AdvancedDatagrid DataTipFunction - flex4

Question

i have a grouped AdvancedDatagrid. It looks like...
dataProvider - GroupingCollection2 - Grouping - GroupingField - summaries - summaryRow - fields.
Sorry for the strage Codefragemt. I try everything to paste a litte bit mxml-Code. But i fail...
And a AdvancedDataGrid Column with a long long description. I want to show a DataTip. In the grouped headline, the DataTip shows [Object][Object]. In the expanded lines, the DataTip works fine.
I assume, what I need is a DataTipFunction to fix this. In this function, i will receive a object (AdvancedDataGridColumn). But how can i reference to the data of the highlighted line? And how can i find out, if this is a groupedLine or an expanded?
Thank you for reading it
Frank

Answer 1

In Adobe Document, it says that the DataTipFunction will look like this:
private function tipFunc(value:Object):String
{
if (value is AdvancedDataGridColumn)
return "Column Name";
// Use the 'name' property of the data provider element.
return "Name: " + value["name"];
}
show the object you received could be an AdvancedDataGridColumn when user's mouse is over the Column Header, and while moving the mouse over a row in datagrid, the function will receive an Object that is the data item in dataProvider.
when you use grouping, the value item you received will contain a sub-item called 'children', so you can depend on that to determind whether it's an expanded leaf node or grouped node.
so you function could be:
private function tipFunc(value:Object):String
{
if (value is AdvancedDataGridColumn)
// return dataTip you want to show for column header
return "Column Name";
if(value.hasOwnProperty('children'))
// return dataTip for grouped column item
return "Grouped Item";
// return data value in this column
return value["dataField name"];
}