Hi,
I discovered something peculiar about the behaviour of the item
renderer for the datagrid.
In my item renderer; which extends from label:
public class myItemRenderer extends from Label
{
......
override public function set data(value:Object):void
{
super.data = value;
updateStatus();
}
}
In my DG:
<MyDG: .... dataProvider="{myData}" ....../>
When myData changes; i noticed that set data is not called.
However, if I explicitly calls invalidateDisplayList() to redraw the
regions,
override protected function updateDisplayList(...):void
{
var list:ArrayCollection = super.data.list;
........
}
The set data was never called; but in updateDisplayList(); the
super.data actually has the changed data!.
Why is this so? Which function in this case actually sets the data?
NOTE that myItemRenderer was created into the DG using a
ClassFactory class.
var colRendererFactory:ClassFactory = new ClassFactory
(myItemRenderer);
// dgc is a DataGridColumn
dgc.itemRenderer = colRendererFactory;
Thank you.
regards,
limhy
--- In [email protected], "Sid Maskit" <[EMAIL PROTECTED]> wrote:
>
> I believe that binding assignments need to use strings. Try:
>
> myDG.dataProvider="{ myData }"
>
> Hope that helps,
>
> Sid
> http://CraftySpace.com
>
> --- In [email protected], "limhy0306" <limhy0306@> wrote:
> >
> > Hi,
> >
> > I've tried using the suggestion:
> >
> > myDG.dataProvider={ myData }
> >
> > But compilation has syntax errors: rightbrace is unexpected.
> >
> >
> >
> > Also, I've read about the binding regarding changes to the
property
> > for the ArrayCollection; that we need to use itemUpdated to
inform
> > about changes to the list.
> >
> > Basically the myData is a list of a class: MyClass.
> >
> > public class MyClass
> > {
> > private var _evt:ArrayCollection;
> >
> > .......
> > }
> >
> > The var _evt changes in real-time & this changes need to be
> > refreshed in the Datagrid.
> >
> > However, not all instances of MyClass stored in myData changes.
> > In this case, I only want to redraw parts of the Datagrid that
> > changes only.
> >
> > Thank you.
> >
> > Regards.
> >
> >
> > --- In [email protected], Simon Bailey <Nutrix@> wrote:
> > >
> > > myDG.dataProvider={ myData }
> > >
> > > On 7 Jul 2008, at 16:26, limhy0306 wrote:
> > >
> > > Hi,
> > >
> > > I've created a custom Dynamic Datagrid component. I would like
to
> > > ask, how can I bind data to this DG?
> > >
> > > My codes:
> > >
> > > // Data to the datagrid. This data is dynamically changing.
> > > [Bindable]
> > > public var myData:ArrayCollection();
> > >
> > > public var myDG:MyDG;
> > >
> > > // Called when creationComplete
> > > private function init()
> > > {
> > > myDG = new MyDG();
> > > myDG.createDataGrid(); // Create the datagrid
> > > myDG.dataProvider = myData; //Would this bind the data?
> > > this.addChild(myDG);
> > > }
> > >
> > > I've noticed that when myData changed, myDG is not updated. In
> > fact,
> > > the set data() function of the ItemRenderer used in myDG is not
> > > being called when I call myData.refresh().
> > >
> > > Is it the problem that I am not binding myDG correctly?
> > >
> > > Thank you.
> > >
> >
>
