method called during dnd when some item in the component need to be marked as active drop target
context | object | dnd context |
ev | Event | native html event |
boolean | returning false will prevent drag operation |
The method isn't purposed for direct call! It is an extension point.
You can override it with your own logic, but be sure to check dnd related events first, as they are provide much more convinient way for dnd handling.
The drag-and-drop context can have the next properties: