@Override
public boolean update(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;
}
