boolean (DnDEvent aEvent) { aEvent.setDropPossible(false); aEvent.hideHighlighter(); final Object object = aEvent.getAttachedObject(); if (object instanceof PackagingElementDraggingObject) { final DefaultMutableTreeNode parent = findParentCompositeElementNode(aEvent.getRelativePoint().getPoint(myTree)); if (parent != null) { final PackagingElementDraggingObject draggingObject = (PackagingElementDraggingObject)object; final PackagingElementNode node = getNode(parent); if (node != null && draggingObject.canDropInto(node)) { final PackagingElement element = node.getFirstElement(); if (element instanceof CompositePackagingElement) { draggingObject.setTargetNode(node); draggingObject.setTargetElement((CompositePackagingElement<?>)element); final Rectangle bounds = myTree.getPathBounds(TreeUtil.getPathFromRoot(parent)); aEvent.setHighlighting(new RelativeRectangle(myTree, bounds), DnDEvent.DropTargetHighlightingType.RECTANGLE); aEvent.setDropPossible(true); } } } } return false; }