called during drag-n-drop, when some item of the component should be marked as an active drop target

boolean $dragMark();


booleanreturning false will prevent a drag operation

Related samples


The method isn't purposed for direct call! It is an extension point.

By default, returns false.

You can override it with your own logic, but check drag-n-drop related events first, as they provide a much more convenient way of drag-n-drop handling.

See also
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