So I want to have the tree behavior in an AdvancedDataGrid, and use
item renderers in the top-level (aka summary) rows. Once I've applied
grouping, the data object is much changed.
Here is the code to add grouping to an ADG:
var tripCollection : TripSearchMatchCollection =
TripSearchMatchCollection(value);
var theGroupingCollection : GroupingCollection = new
GroupingCollection();
theGroupingCollection.grouping = new Grouping();
theGroupingCollection.grouping.fields = new Array();
var newGroupingField : GroupingField = new GroupingField('rideID');
theGroupingCollection.grouping.fields.push(newGroupingField);
newGroupingField = new GroupingField('memberID');
theGroupingCollection.grouping.fields.push(newGroupingField);
theGroupingCollection.source = tripCollection;
Grid.dataProvider = theGroupingCollection;
Grid.validateNow();
theGroupingCollection.refresh();
So I'm grouping on a combination of rideID and memberID.
Whereas previous to grouping, the item renderer's
override public function set data(value : Object) : void
received a single member of the tripCollection as 'value', and I could
cast it to the actual class and access its properties, now I get an
Object that has the original data buried down several levels of
subproperties named children and [0].
I assume that the layering is a way to show what grouping field values
are controlling the row, but I cannot find any documentation on how to
get the original object out from the depths.
Any ideas?
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