When a drag & drop operation occurs on a tree, the drag & drop handlers call the public calculateDropIndex() function. This function stores all the properties that you want in an mx_internal variable called _dropData of Object data type. So, make sure that your class import and use the mx_internal namespace and attach a listener to the tree's dragDrop event. In the event handler, look up the _dropData variable and specifically the "parent" and "index" properties. If this drop operation should not be allowed, call the preventDefault() method on the event. That should do the trick.
________________________________ From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of David Kramer Sent: Monday, February 02, 2009 12:34 PM To: flexcoders@yahoogroups.com Subject: RE: [flexcoders] Tree Control Drag and Drop Help Adrian, I am up against the same problem. Please share your knowledge on it so far. kramer.da...@consultant.com <mailto:kramer.da...@consultant.com> Many thanks. David ________________________________ From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of adrianpomilio Sent: Monday, February 02, 2009 8:45 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Tree Control Drag and Drop Help This is a two part question. 1 - How can I keep a child from being dropped outside of it's parent? I want to be able to drag and drop within a nodes parent. 2 - How do I get a handle on the new index of the node that has been dropped. I can get the current index, the parents name, but not the location it was dropped. I am using an ArrayCollection to populate the tree, using the children attribute to create the child nodes. I am stuck with having to use the ArrayCollection. Any pointers would be great.
