Can I make a copy of an AdvancedDataGrid Item Renderer?

Question

I have manual drag-and-drop functionality built in to my
AdvancedDataGrid (ADG). Right now, I am building my own custom drag
proxy using a Container instance and grabbing the text to use from
the "selectedItem" property. This creates a suitable image to drag.
However, what I'd really like to do is have the drag proxy look
exactly like the item renderer of the item I'm dragging. I don't
want the whole row, though, only one cell - that's why I can't use
the ADG's "dragImage" property. When I run the code below to
attempt to make a copy of the itemRenderer instance, the
itemRenderer in the ADG for the source item is cleared out - the
label disappears. Is there some way to make just a "copy" of the
itemRenderer instance, so that it doesn't disappear from the
ADG?

Answer 1

"ericbelair" <[email protected]> wrote in
message
news:gecebe$17j$[email protected]..
>I have manual drag-and-drop functionality built in to my
AdvancedDataGrid
> (ADG). Right now, I am building my own custom drag proxy
using a Container
> instance and grabbing the text to use from the
"selectedItem" property.
> This
> creates a suitable image to drag. However, what I'd
really like to do is
> have
> the drag proxy look exactly like the item renderer of
the item I'm
> dragging. I
> don't want the whole row, though, only one cell - that's
why I can't use
> the
> ADG's "dragImage" property. When I run the code below to
attempt to make a
> copy
> of the itemRenderer instance, the itemRenderer in the
ADG for the source
> item
> is cleared out - the label disappears. Is there some way
to make just a
> "copy"
> of the itemRenderer instance, so that it doesn't
disappear from the ADG?
>
> // This is the container I use for my dragProxy
> var proxyBox:VBox = new VBox();
>
> for each (var item:Object in this.selectedItems)
> {
> var selectedItemRenderer:IListItemRenderer =
> super.itemToItemRenderer(item);
>
> proxyBox.addChild(DisplayObject(selectedItemRenderer));
> }
The itemRenderer is made by the ADG using the ClassFactory of
the
itemRenderer class.
I think you can search for the appropriate ClassFactory for
that column,
then make a new renderer from that Factory. Set its data
and/or listData to
the same as the existing renderer.
This might look something like this:
var factory:IFactory;
var renderer:IListItemRenderer;
//populate factory with the appropriate renderer factory
//you need to do this part
factory=?;
renderer = factory.getInstance();
renderer.data=selectedItemRenderer.data;
renderer.listData=selectedItemRenderer.listData;
proxyBox.addChild(DisplayObject(renderer));
You also might find that you can shortcut this by using new
(getDefinitionByName(selectedItemRenderer.className)) instead
of the
factory.
HTH;
Amy