Using a canvas as an itemrenderer - how to access the datafield?

Question

Yes... another ItemRenderer related question...
So I have this advancedDataGrid of which I dynamically
generate the columns in actionscript. Each of these columns get
their own datafield.
This code works well, since all the data displays nicely
where I want it to be.
However, in the columns there are numbers from like 0 to 10,
these are put there by the default itemrenderer by using the
datafield. Instead of just displaying these numbers, I'd like to
use a canvas as an itemrenderer to draw something in the box based
on the value of the number. So all I need to access in my Canvas is
the value that is parsed by the datafield.
I thought to do so by overriding public function set
data(value:Object):void
But what does value contain? I tried doing something with it
but I keep getting errors. Does value just contain the entire
dataProvider? Or is there a way to acces just the number that would
be put on that position in the grid if I wouldn't be using a custom
itemrenderer at all?
I've searched tons of blogs but haven't found the exact
answer to my question yet.
Many thanks in advance.

Answer 1

"Lvw2000" <[email protected]> wrote in
message
news:gnucks$8kh$[email protected]..
> Yes... another ItemRenderer related question...
>
> So I have this advancedDataGrid of which I dynamically
generate the
> columns in
> actionscript. Each of these columns get their own
datafield.
>
> This code works well, since all the data displays nicely
where I want it
> to be.
>
> However, in the columns there are numbers from like 0 to
10, these are put
> there by the default itemrenderer by using the
datafield. Instead of just
> displaying these numbers, I'd like to use a canvas as an
itemrenderer to
> draw
> something in the box based on the value of the number.
So all I need to
> access
> in my Canvas is the value that is parsed by the
datafield.
>
> I thought to do so by overriding public function set
> data(value:Object):void
>
> But what does value contain?
It contains the information needed for the entire row. Just
put a break
point in the code in your override function and then run the
application in
debug mode. Use the variables window to inspect the value.
> I tried doing something with it but I keep
> getting errors.
Are the errors related to the value or are they related to
something else,
such as trying to set properties on subcomponents that have
not been
instatiated yet.
> Does value just contain the entire dataProvider? Or is
there a
> way to acces just the number that would be put on that
position in the
> grid if
> I wouldn't be using a custom itemrenderer at all?
Look at implementing IDropInListItemRenderer and then look at
listData.label.
HTH;
Amy