public void processDrop(DropEvent dropEvent) {
// resolve drag source attributes
UITreeNode srcNode =
(dropEvent.getDraggableSource() instanceof UITreeNode)
? (UITreeNode) dropEvent.getDraggableSource()
: null;
UITree srcTree = srcNode != null ? srcNode.getUITree() : null;
TreeRowKey dragNodeKey =
(dropEvent.getDragValue() instanceof TreeRowKey)
? (TreeRowKey) dropEvent.getDragValue()
: null;
TreeNode draggedNode = dragNodeKey != null ? srcTree.getTreeNode(dragNodeKey) : null;
log.debug("dropped key: " + dragNodeKey);
// add to list of selected properties
if (draggedNode != null)
this.dndSelNodes.put(((OntologyProperty) draggedNode.getData()).getURI(), draggedNode);
}
