Question

I have 2 spark lists with items, drag&drop enabled (mxml application, flash builder 4). Everything works fine, I can drag and drop items from the one list to the other. I’ve been searching a lot but I can’t find it (probably because I’m using the wrong keywords).

Let’s say that I want to ‘handle’ when an Item changes from list. So

LIST 1          LIST 2
item1           item 2
                item 3

It works fine when I drag Item 3 to List 1, but how can I handle this event? I want to ‘save’ the changes. I think about looping the whole list when there’s a ‘change’, but I’m not sure if that’s the right way.

Can someone give me more advice or help me out?

Thanks a lot!
(And sorry if this question has already been asked)

Answer 1

You can handle by listening the event CollectionEvent.COLLECTION_CHANGE:

myList.dataProvider.addEventListener(CollectionEvent.COLLECTION_CHANGE, onCollectionChangeHandle);

That will fire an event.kind == CollectionEventKind.* (see here) each time you make some change, so you can save the changes as you want.

Also there is the option by listening DragEvent.DRAG_COMPLETE event:

myList.addEventListener(DragEvent.DRAG_COMPLETE, onDragCompleteHandle)

Which event.dragSource has the data being dragged.