How to get the information of the current drag node

[condorheroblog]

As shown in the image, when I click the drag icon, I want to customize some actions, such as copying this node, deleting this node, and clearing the style of this node. If I want to complete these actions, I think I should need to get the detailed information of the current dragged node.

Maybe it is a good idea for the plugin to return a hook. I look forward to your reply. Thank you.