You are very close. But setItemAt requires an entire item, not just the
changed property. While setItemAt might be better practice, I would just
set the property directly, and then call itemUpdated:
private function onItemClick( event:ListEvent ):void {
var oItem:Object = event.currentTarget.selectedItem;
oItem.selected = true;
var coll:XMLListCollection = myDG.dataProvider as XMLListCollection;
coll.itemUpdated(oItem); //this is required when you directly set an item
property
}
Tracy Spratt,
Lariat Services, development services available
_____
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of fumeng5
Sent: Tuesday, April 14, 2009 1:32 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Access DataGridColumn on DataGrid Row Click
Tracy,
Thank you for your response. I've got the checkbox renderer from cflex and
it's working just fine. i've updated my XMLListCollection with the
'selected' property and it renders fine as well.
The problem is updating the collection on click of a datagrid row.
Here is what I have:
private function onItemClick( event:ListEvent ):void {
// update the dataprovider using the collection API
var e:ListEvent = event;
var rowIndex:Number = e.rowIndex;
var coll:XMLListCollection = myDG.dataProvider as XMLListCollection;
coll.setItemAt({selected:true},rowIndex);
}
I don't appear to be setting the correct object. Do I wanted to be setting
the datagrid's selectedItem instead?
and here is my XMLListCollection.
<mx:dataProvider>
<mx:XMLListCollection>
<mx:source>
<mx:XMLList xmlns="">
<data col1="haha" selected="false"/>
<data col1="hahaha" selected="true"/>
<data col1="hahahaha" selected="true"/>
</mx:XMLList>
</mx:source>
</mx:XMLListCollection>
</mx:dataProvider>
Thank you very much for your help.
--- In flexcod...@yahoogro <mailto:flexcoders%40yahoogroups.com> ups.com,
"Tracy Spratt" <tspr...@...> wrote:
>
> You need to study up on item renderers a bit. What you are trying to do
> will not work. The check box state must be driven by a value in the
> dataProvider item. You should not attempt to access the check box directly
> via code.
>
>
>
> Find an example of a checkbox renderer, there are many, I have one on
> www.cflex.net <http://www.cflex. <http://www.cflex.net/> net/> . Do not
attempt to create an
> interactive itemRenderer from scratch
>
>
>
> When you have a working renderer, you can simply set the property on the
> dataProvider item (using the collection API, or itemUpdated())
>
>
>
> Tracy Spratt,
>
> Lariat Services, development services available
>
> _____
>
> From: flexcod...@yahoogro <mailto:flexcoders%40yahoogroups.com> ups.com
[mailto:flexcod...@yahoogro <mailto:flexcoders%40yahoogroups.com> ups.com]
On
> Behalf Of fumeng5
> Sent: Tuesday, April 14, 2009 9:56 AM
> To: flexcod...@yahoogro <mailto:flexcoders%40yahoogroups.com> ups.com
> Subject: [flexcoders] Access DataGridColumn on DataGrid Row Click
>
>
>
>
>
>
>
>
> Hi,
>
> I'm trying to access a DataGridColumn when a user clicks on a DataGrid
row.
> The problem is that I'm not trying to access the column that was clicked
> on....
>
> I want to select a checkbox that is always in the 2nd column whether a
user
> clicks on the 2nd column or not. I'm having trouble figuring out how to do
> that......Can anyone point me in the right direction?
>
> Thanks!
>
> <mx:DataGrid id="myDG" width="100%" height="100%"
> itemClick="onItemClick(event)">
>
> <mx:dataProvider>
> <mx:XMLListCollection>
> <mx:source>
> <mx:XMLList xmlns="">
> <data col1="haha" col2=""/>
> <data col1="hahaha" col2=""/>
> <data col1="hahahaha" col2=""/>
> </mx:XMLList>
> </mx:source>
> </mx:XMLListCollection>
> </mx:dataProvider>
>
> <mx:columns>
>
> <mx:DataGridColumn headerText="col1" dataField="@col1"/>
>
> <mx:DataGridColumn headerText="col2" dataField="@col2">
> <mx:itemRenderer>
> <mx:Component>
> <mx:CheckBox label="Check this Box!" />
> </mx:Component>
> </mx:itemRenderer>
> </mx:DataGridColumn>
>
> </mx:columns>
>
> </mx:DataGrid>
>
