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I am developing a drag drop betweeb a tree and an absolute layout. The tree is outside of the absolute layout. When droppoing a node on the layout, I need to dtermine its relative posistion. Vaadin book mentions about the WrapperTransferable, however, I get a classcast exception for TreeTransferable to WrapperTransferable.
What am I doing wrong? Is there a differnt way to achieve this functionality.