Thanks! I didn't know that you did not need to set dropEnabled="true"
if you also set dragEnter and dragDrop handlers. I just assumed that
you always needed to set dropEnabled, even if you write your own drag
behaviour...
Once I set dropEnabled to "false", I can see (while debugging) that
the contents of the Array after the Drop were Correct, i.e. no
"[object Object]" items in the List. So far so good... BUT!!! Once
it is set to "false" the List does not reflect the contents of the
Array (it's dataProvider) after the Drop. I tested this in two ways:
1. I Initialized the [Bindable] Array to contain values before the
Drop. They show up in the List as expected but when I Drop an item
nothing changes! In debug mode, though, the Array contains both the
initialized values and the drop items.
2. When I set dropEnabled back to "true", the drop items show up in
the list, but so does the default "[object Object]" for each drop item.
This now looks like a bug to me, that somehow the list control does
not get notified of change to the dataProvider.
To test this, I added a button that manually adds a value to the Array
and the List still does not reflect the change to it's dataProvider.
Any Ideas?
Thanks...
Martin
--- In flexcoders@yahoogroups.com, "Paul Williams" <[EMAIL PROTECTED]> wrote:
>
> Just a guess, but one possibility is that your list's default drop
> behaviour is switched on, i.e. on the list control, dropEnabled="true".
> This could cause the item to be added twice, once by your event handler
> and once by the default drop behaviour.
>
> Paul
>
> -----Original Message-----
> From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
> Behalf Of flexabledev
> Sent: Saturday, April 22, 2006 9:38 AM
> To: flexcoders@yahoogroups.com
> Subject: [flexcoders] Drag & Drop conundrum...
>
> I've started to experiment with Drag & Drop and have run into a
> problem I can't figure out. I have successfully written code that
> allows me to Drag rows from a DataGrid (with a custom Drag Proxy) and
> Drop the value of one of the columns into a List. The only thing I
> don't understand is why when I do a Drag & Drop, I always get two
> entries in the List for each of the rows that were dragged. If I drag
> two rows with String values that get dropped (i.e. "ONE", "TWO"), the
> result in the List after the Drop looks like:
>
> [object Object]
> [object Object]
> ONE
> TWO
>
> When I debug it, the value of items.length equals 2
>
> which drives a For loop with
> IList(dropTarget.dataProvider).addItem(items[i].field);
>
> As I step through the doDragDrop function in debug mode, it only
> executes the loop twice, yet I end up with four entries in the List?
>
> Any ideas?
>
> I can't figure it out, but it feels like there is some default
> behaviour (dropping the "items" Object separate from my "addItem")
> occuring that I don't see when I step through it in debug mode?
>
>
>
>
>
>
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