Hi Barry
a suggestion: extend the datagridcolumn as well to include
a "rendererDataProvider" property eg
myDataGridColumn.mxml
---------------------
<mx:DataGridColumn>
<mx:Script>
public var rendererDataProvider:Object;
</mx:Script>
</mx:DataGridColumn>
then do this -
<myDataGridColumn headerText="Role"
itemRenderer="custom_controls.ComboBox"
rendererDataProvider="colRole"/>
<myDataGridColumn headerText="Type"
itemRenderer="custom_controls.ComboBox"
rendererDataProvider="colEvalType"/> //not sure sbout binding
then in your custom_controls.ComboBox (intialize or creationComplete
event) set the dataprovider
eg
private function comboInitialize():void
{
var myListData:DataGridListData = DataGridListData(this.listData);
var datagrid1:DataGrid = DataGrid(myListData.owner);
//extract rendererDataProvider from the column
var dp:Object = datagrid1.columns
[myListData.columnIndex].rendererDataProvider;
// now set the dataprovider based on lookup value
this.dataProvider = dp;
}
this is very raw but it can be made to work.
regards
bod
--- In flexcoders@yahoogroups.com, "Barry Beattie"
<[EMAIL PROTECTED]> wrote:
>
> well, the origional post went down like a lead dirigeable.... I'll
> back up a bit and try to explain better...
>
> I have query data that I want to edit in a datagrid, mostly to
utilise
> the textbox-type features. However...
>
> two columns are look-up data, best represented by ComboBox's. it
looks
> like I can use itemRenderers for the cells in these columns. What
I'm
> stuck on is the best way to bind the look-up data to the ComboBox's
> when they're used as itemRenderers.
>
> because I want to extend the ComboBox's anyway, I could (in theory)
> have these as custom components and bind the dynamic data directly
to
> each within the custom control mxml - hard wired in. but If I want
to
> use the same control for both columns but with different data, I'm
> stuck
>
> is there any way of keeping the custom controls "dumb" and, from
the
> datagrid's level, tell the itemRenderers what look-up data model to
> bind to?
>
> something like this:
>
> <mx:DataGridColumn headerText="Role"
> itemRenderer="custom_controls.ComboBox"
rendererDataProvider="{colRole}"/>
> <mx:DataGridColumn headerText="Type"
> itemRenderer="custom_controls.ComboBox"
rendereDataProvider="{colEvalType}"/>
>
> is (something like) this possible? is there a better way?
> How can comboBoxes with dynamic data be integrated with DataGrids?
>
> any suggestions most welcome.
> thanx
> barry.b
>
> PS: I suspect that this is only half the battle. Getting the
DataGrids
> data model to store the ComboBox selection might be the other
half...
>
>
>
> > datagrid's itemRenderer's dataProvider?
> > Posted by: "Barry Beattie" [EMAIL PROTECTED] barry.beattie
> > Date: Wed Aug 16, 2006 10:23 pm (PDT)
> >
> > hi all
> >
> > I've got a datagrid where I'll have columns of ComboBoxes,
populated
> > with dynamic data (look-up tables really).
> >
> > sure I can assign a DataGridColumn's itemRenderer to a custom
control,
> > but if I want to re-use that control, how do I pass a different
> > dataProvider to it?
> >
> > in other words:
> >
> > having these controls
> > <my:ComboBox dataProvider="{colRole}" y="100"></my:ComboBox>
> > <my:ComboBox dataProvider="{colEvalType}" y="120"></my:ComboBox>
> >
> > as itemRenderers
> > <mx:DataGridColumn headerText="Role"
itemRenderer="custom_controls.ComboBox"/>
> > <mx:DataGridColumn headerText="Type"
itemRenderer="custom_controls.ComboBox"/>
> >
> > or is this a dumb idea and there's a better way?
> >
> > thanx
> > barry.b
>
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